Device for control and regulation of liquid level

FIELD: machine building.

SUBSTANCE: invention relates to field of computer-aided manufacturing in machine building and is provided for workflow automation, related to control and regulation of liquid mediums. Device is structurally implemented in the form of one functional assembly, including conductometric sensor of liquid level, connected to sensitivity control, detectors, connected to second lead sensitivity control, threshold elements, connected to detectors, differentiator, unit for placement into initial state, JK- trigger, monostable circuit, replicator and indicator units. Additionally device contains three programming leads of its functional capabilities and four outlets. At closed first and second programming leads and connection of the third programming lead to third device outlet it is transformed into control and regulation system of liquid level with its agitated surface and usage of the first and the second outlets of device, providing verification and liquid level control mode at fixed height. At opened first and second programming leads and connected to each other third programming lead and third outlet of the device it is transformed into monitoring and regulation system of liquid with its smooth surface in the mode of monitoring and keeping of liquid level at its fixed height. At disconnected programming leads device is transformed into warning assembly of monitoring of top level of liquid with usage of the third outlet of device or warning assembly of monitoring of bottom level of liquid with usage of fourth outlet of device. Device provides vertical and horizontal methods of erection.

EFFECT: expansion of functional capabilities of the device and increasing of nomenclature of controllable loads and methods of its erection and also improvement of operational performance.

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The invention relates to the field of automation of production processes in mechanical engineering and is intended for automation of technological processes related to the control and regulation of liquid media.

Known monitoring device that contains the liquid level sensor, a generator of electrical oscillations, the indicator detector (see inventor's certificate SU 243872, IPC CL G01f e, 34 ' Compensation optical sensor", 14.05.1969).

Such a device has limited functionality due to the lack of possibilities:

1) work in a mode of filling and emptying of the tanks with liquid, and to maintain its level at a fixed height, as this device allows only the control of the liquid level;

2) manage different types of loads, such as the winding of the electromagnetic relay or two coil of the electromagnetic actuator pump units;

3) to produce horizontal and vertical mounting liquid level sensor on the object of operation;

4) to produce programming functionality. In addition, such a device is complex sensor design liquid level.

It is also known monitoring device containing first and second fluid-level sensor, first adoptedand second threshold elements, the sensitivity control (see product Catalog 2004 "Aries "instrumentation and automation of industrial enterprises", a device to control a submersible pump ARIES SAU-M2, s; website "Aries" www.owen.ru "product Catalog 2007, version 7, the device for controlling a submersible pump ARIES SAU-M2", p.137). But such a device has limited functionality because:

1) does not allow to operate in the mode control and maintain the level of the controlled fluid at a given fixed height due to the fact that the design of this device allows it only in the mode of filling and emptying of the tank with liquid;

2) does not provide a horizontal mounting method on the object operation, because the design of this device provides only vertical way its mounting;

3) allows you to manage various types of loads, such as the winding of the electromagnetic relay or two coil of the electromagnetic actuator pump units;

4) does not have the functionality to control and regulate fluids excited with their surfaces;

5) requires a relatively large space of the mounting area on the object of exploitation as it is structurally designed in the form of two functional the nodes the liquid level sensor unit with the control scheme.

The closest to the technical nature of the proposed solution is a control device that contains the multivibrator, the liquid level sensor with clamp (holder), trigger, repeater, the inverter, the detector, the first and second threshold elements, the first and second regulators sensitivity, the first and second capacitors (see the journal "Radio", No. 6, 1991, p.32).

However, this device has limited functionality because:

1) its design provides the only mode of filling and emptying of the tank controlled by the liquid and prevents the operation of this device in a control mode and maintain the level of the controlled fluid at a given fixed height, for example, in the galvanic production in process baths to trawling printed circuit boards, in baths for coating on metal parts or medical burn units in baths with therapeutic fidirectory where unacceptable falling levels of controlled fluid from required elevations;

2) does not provide a horizontal mounting method on the object operation because the device provides only vertical way its mounting on the object of operation;

3) does not allow PR is the program functionality;

4) allow the operation to only one type of load in the form of an electromagnetic relay and does not allow, for example, his work simultaneously on two coil of the electromagnetic actuator pump units;

5) does not have the functionality of the control fluid from disturbed their surfaces, for example, by moving the controlled objects or technological production facilities in accordance with the technological process is the mixing of the liquid.

In addition, such a device has other serious drawbacks, as it requires a relatively large space of the mounting area on the object of exploitation, due to the fact that it is structurally designed in the form of two functional units - sensor urosticte and block with the control circuit. The liquid level sensor occupies a relatively large part of the useful working space in the tank is controlled by the liquid and increases the complexity of the maintenance tank, and the space it increases with the height of the tank, as it increases the length of the signal electrode of the sensor.

However, the scheme of arrangement requires a large number of settings during operation, because:

the voltage at the inputs then the debt of the elements depends on the size of the reservoir with a controlled fluid, that requires on each tank new dimensions to set the device in operation;

sensor control liquid level in such a device is included in the bridge AC, which requires periodically balancing the adjustment elements under operating conditions.

In addition, the design of the electrical circuitry of this device provides control of liquid media only in tanks, the walls of which are made of conductive material. In the case of performing its walls of dielectric material is necessary to ensure control of the liquid on the object of operation to produce the completion of its design and scheme for the introduction of the second electrode sensor and fluid level control. These deficiencies, in turn, degrade the operational characteristics of the device.

Solved object of the invention is to enhance the functionality of the device by control of liquid media with rough surface and regulate their level at a fixed height with the possibility of programming the functionality of the device and increase the range of controlled loads and method for its installation, as well as the improvement of the operational characteristics of the device.

The current task is achieved in that the control device and R is the regulation of the liquid level, containing the first multivibrator, the liquid level sensor with holder, a trigger, a first detector, the first and second threshold elements, the first and second repeaters, the first and second regulators sensitivity, the first and second capacitors, it introduced the second detector, differentiator, an input connected to the direct output of the first threshold element, and its output is the first output programming the unit in its original state, the output of which is connected to the S-input of the trigger, the inverse and the direct outputs of which are respectively the first and second outputs of the device, the third capacitor, the first output of which is connected to the inverse the output of the second threshold element, the one-shot, whose input is connected to the second output of the third capacitor, and the point of connection of its input and the second output of the third capacitor is the second output programming, the first and second keys voltage, the first conclusions which are connected respectively To the input and the J-input of the trigger, the latter findings from the General ground of the device, the control inputs with the output of one-shot, the first and second display units, the inputs of which are connected respectively to the inverse and direct outputs trigger the second multivibrator, and the liquid level sensor is made conductometric with three conductive E. what ectrode, the first and second electrodes which are signal electrodes, the third electrode connected to the common ground of the device - the common electrode is made longer than the first and second electrodes and having a side of the first end of the bend forming its l-shaped form in a side of the second electrode, structurally made longer than the first electrode and the installed offset to the side of the first electrode relative to the first end of the third electrode, and one end of the holder, which is the working end of the device is structurally designed in the form of a circular cone, the conical surface of which the first, second and third electrodes, the first ends of which are placed from the side of the conical surface of the holder, mounted in the same plane drawn through the axis of symmetry of the holder, along which has a third electrode on both sides of which are parallel to this axis, the first and second electrodes, and the outputs of the first and second multivibrators connected with the first conclusions of the respective capacitors, the latter findings are connected to the first conclusions of the relevant controls for gain, the second set of conclusions which are connected with inputs of the respective detectors, the inputs of which are connected respectively to the first and second electrodes of the liquid level sensor, and PR is my second threshold element connected to the J input of the trigger, and the outputs of the first and second detectors are connected to the inputs of the respective threshold element, inverted outputs of which are connected to the inputs respectively of the first and second repeaters, the outputs of which are respectively the third and fourth outputs of the device, which is designed to be placed in one functional node, and the point of connection To the input trigger and the first output of the first key voltage is the third output programming, in connection with which the third output device and the circuit between the first and second findings of the programming device is transformed into the system of control and regulation of liquid level with disturbing its surface using the first and second outputs of the device, when open condition of the first and second findings programming and closed between a third output programming and third output devices in the system of control and regulation of liquid level with a calm its surface using the first and second outputs of the device, and when the findings programming - in detector monitoring the top of the fluid level using the third output or lower the liquid level using the fourth output device.

Figure 1 shows the functionality of the other circuit of the device; figure 2 - horizontal mounting method of the device; figure 3 - vertical mounting method of the device; figure 4 is a chart of voltages, explaining the operation of the device maintain the liquid level at its fixed height from the disturbed surface of the liquid; figure 5 - diagram of stresses, explaining the operation of the device maintain the liquid level at its fixed height with a calm liquid surface.

The device includes a sensor 1 liquid level with the holder 2, the first and second multivibrators 3 and 4, the first and second capacitors 5, 6, the first conclusions which are connected respectively to the outputs of the first and second multivibrators 3 and 4, the first and second regulators 7, 8 the sensitivity of conclusions which are connected with the second pins, respectively, the first and second capacitors 5, 6, the first and second detectors 9, 10, the inputs of which are connected to the second conclusions, respectively, the first and second regulators 7, 8 the sensitivity of the first and second threshold elements 11, 12, each of which is made, for example, by the circuit of Schmitt trigger whose inputs are connected to the outputs respectively of the first and second detectors 9, 10, the differentiator 13, the inlet of which is connected to the direct output of the threshold element 11, the terminal 14 connected to the output of the differentiator 13 and the first output is programmirovanie, JK flip-flop 15, block 16 installation in the initial state of the circuit device, the output of which is connected to the S-input of the trigger 15, the first repeater 17, the inlet of which is connected to the inverse output of the first threshold element 11, the first and second blocks 18, 19 display, the inputs of which are connected respectively with the inverse and the direct outputs of the RS flip-flop 15, the first and second output terminals 20 and 21 are connected respectively to the inverse and the direct outputs of the trigger 15 and are respectively the first and second outputs, the second repeater 22, whose input is connected to the inverse output of the second the threshold element 12, the third and fourth terminals 23 and 24, are connected to the outputs respectively of the first and second repeaters 17 and 22 and are respectively the third and fourth output devices, the first and second keys voltage 25, 26, the first conclusions which are connected respectively To the input and the J-input of the trigger 15, the latter findings - common terminal ground device, the one-shot 27, the output of which is connected with the control keys 25, 26, the third capacitor 28, the first output of which is connected to the inverse output of the threshold element 12, the terminal 29, connected to the connection point between the input of one-shot 27 and the second output of the third capacitor 28 and the second output programming terminal 30 connected to the point of connection is the means To the input of the trigger 15 and the first output of the first key 25 and the third output programming. When this occurs, the direct output of the threshold element 12 is connected to the J input of the trigger 15. Conclusions programming intended for programming the functionality of the device.

Sensor 1 liquid level is made, for example, conductometric in the form of three conductive electrodes, one of which is the first signal electrode 31, and the other second signal electrode 32, structurally made longer than the first signal electrode 31, and the third common electrode 33. The second electrode 32 is installed with an offset from the first end of the third electrode 33 toward the first electrode 31. For fixation of the electrodes 31, 32, 33 of the sensor 1 in a certain position relative to each other and fastening them in the design of the device and to enable the execution of its design in the form of one functional node device is equipped with a dielectric holder 2, an insulating from each other the electrodes 31, 32, 33 of the sensor 1. One of the ends of the holder 2 is made in the form of a circular cone. On the conical surface 34 of the holder 2 is the mounting of the electrodes 31, 32, 33 of the sensor 1. The conical surface 34 of the holder 2 creates favorable conditions for better draining of the controlled fluid after draining electrodes 31, 32, 33 of the sensor 1 and thus eliminates the accumulation in locations e the W on the holder 2 as a horizontal, and when the vertical mounting of the device. When the electrodes 31, 32, 33 are installed in the same plane drawn through the axis of symmetry of the holder 2. The conical surface 34 of the holder 2 with the attached first ends of the electrodes 31, 32 and 33 is the working end of the device. Moreover, the common electrode 33 is installed along the symmetry axis of the holder 2, and the first and second signal electrodes 31, 32 on both sides parallel to this axis. The first and second signal electrodes 31 and 32 of the sensor 1 liquid level is connected to the inputs respectively of the first and second detectors 9, 10. The third electrode 33 of the sensor 1 is connected to the common ground circuit device. The third electrode 33 from the side of its first end has a bend, giving it a G-shaped in the direction of the second signal electrode 32 and is made longer than the first and second electrodes 31, 32 for identification and orientation of the device in various ways on-site installation operation. Perform structurally, the third electrode 33 is longer than the first and second electrodes 31, 32 with a bend towards the second signal electrode 32 and the second electrode 32 is longer than the first electrode 31 provides the opportunity to use the device in vertical and horizontal ways of its mounting on the objects of exploitation. In addition, the ratio of the lengths of the electrodes 31, 32, 33 provides all the modes and methods of mounting the device to the flushing or dewatering of the third electrode 33 of the sensor 1 is always the first or simultaneously with the electrodes 31, 32. This, in turn, provides for the control of liquid level and its regulation being controlled fluid under potential common ground device or outside contact her with the electrodes 31, 32, 33 of the sensor 1.

Signals for the excitation electrodes 31 and 32 of the sensor 1 are variable voltage, low frequency, supplied with outputs respectively multivibrators 3 and 4. This allows you to avoid polarization of the electrodes of the sensor 1 and the processes of electrolysis and, as a consequence, the loss of sensitivity due to the deposition of salts, and greatly extend their lifespan. The electrodes 31, 32 and 33 of the sensor 1 is made of material resistant to the effects of controlled fluid, causing corrosion and destruction of the electrodes, for example, of stainless steel or low carbon steel, chrome or Nickel coatings depending on the type of the controlled fluid.

Perform conductometric sensor 1 with a holder 2 of the common electrode 33 with the signal electrodes 31, 32 provides a control device of the liquid 36 in the tanks with walls, made of conductive, dielectric materials, which leads to the improvement of its operational characteristics.

The multivibrators 3, 4 is performed, for example, according to the scheme of the symmetric oscillator rectangular pulses on the basis of the operational amplifier (see the book Shiloh V.L. Linear circuits in electronic equipment. - M.: Owls. Radio, 1974, s, ri, a).

Regulators 7, 8 sensitivity performed, for example, based on a resistor with a variable resistance value in the form of a variable resistor connected in the circuit of the rheostat and provides a smooth adjust the sensitivity of the sensors 1, 2, or pick a resistor with a constant resistance value, providing a stepped adjustment of the sensitivity of the sensors 1, 2. The presence of the device controllers 7, 8 sensitivity allows it to be adapted to work with a wide range of conductivity controlled fluid: water, contaminated water, food, solvents, milk and milk beverages, weak acid and alkaline solutions, etc. through the initial setup of the resistance values of the controllers 7, 8.

The detectors 9, 10 made, for example, according to the scheme diode passive transducer peak values of the AC voltage to DC with sequential switching rectifier diode with the output load in the form of a parallel RC circuit (see the book "Volgin HP is. Transducers AC voltage to DC. - M.: Owls. radio, 1977", s, RES, b).

Unit 16 installed in the initial state of the circuit device is performed, for example, on the basis of the transistor n-p-n type and an RC circuit (see figure 1)consisting of series-connected capacitor and resistor, the connection point of the first conclusions of which is connected to the base of transistor block 16, and the second output resistor and the output of the emitter of the transistor unit 16 is connected to the common ground circuit device. The second output capacitor connected to the power supply voltage and the collector of the transistor, which is the output of unit 16, connected to the S-input of the trigger 15. The block 16 is designed for installation schematic of the device to its original state at the time of submission to his power.

The display units 18 and 19 is made, for example, based on (see figure 1) series-connected resistor, the first terminal connected to the inverse or direct outputs of the trigger 15, and the led, the cathode of which is connected to the common ground circuit device. Blocks 18 and 19 display are designed for visual inspection of the supply to the external load (not shown in figure 1) control signals, respectively, with inverse and direct outputs of the trigger 15 and control a working state of the device.

Repeaters 17 and 22 are designed to align output the resistances respectively of threshold elements 11 and 12 and the resistance of the external load, connected to their outputs through the output terminals 23 and 24 of the device.

The outputs of the trigger 15, repeaters, 17, 22 performed with levels of load capacity, providing switching control windings of electromagnetic actuators and low-power electromagnetic relay. In addition, the load can be the inputs of the logic elements of digital circuits.

The keys 25 and 26 are designed to generate pulses of negative polarity the same duration as the output pulse of one-shot 27, respectively, To the input and the J-input of the trigger 15 by closing these conclusions on the General ground of the device. The keys 25 and 26 made, for example, on the basis of the transistor n-p-n type. The first findings of the keys 25, 26 are the conclusions of the collectors of transistors, the second conclusions - the conclusions of their emitters, the control inputs of the keys 25, 26 are the conclusions of the bases of the transistors.

The one-shot 27 made, for example, according to the scheme standby multivibrator based trigger and timing RC circuit in the form of a series-connected resistor and capacitor, a resistor, RT, mg which is connected to the power source and the connection point connected to the R input of the trigger inputwhich is the input of one-shot, served triggering pulses to the inputsand this serves voltage levels l is logical "1", as a direct trigger output is the output of one-shot 27 (see the book "Shiloh V.L. Popular digital circuits: the manual. - M.: Radio and communication, 1987. - 352 S.: ill. - (Mass reliability. VIP)", s, Risa, b). The one-shot 27 is designed to generate pulses of voltage levels logic "1" for switching keys 25, 26, applied to their control inputs, negative differential voltages on the direct and inverse outputs of threshold elements 11 and 12 respectively. The duration of the pulse generated by one-shot 27, is determined by the length of the delay switching of the trigger 15 in the moments of occurrence of the above variations of the voltages generated in moments of flushing of the signal electrode 31 of the sensor 1 of the controlled fluid and draining the signal electrode 32 of the sensor 1 in the control and regulation of liquid level when disturbed its surface. Excited state level of the controlled fluid is mobile and stationary technological production facilities operation. When disturbed the controlled fluid, for example, can produce its single or repeated splashes, spray or wave with a constant frequency of occurrence, which can be briefly wash the electrodes 31, 33 and 32, 33 of the sensor 1, when the level of controlled W is dcosta is near the electrodes on the verge of their washing or drying respectively below or above the electrodes 31, 33 and 32, 33 of the sensor 1. Such random flow or drain electrodes cause false intermittent operation of the sensor 1 and the appearance of random switching threshold of the elements 11 and 12, causing a false trigger 15 and their appearance on its outputs and the output terminals 20, 21 of the device. To eliminate the occurrence of false positives at the output terminals 20 and 21 in the device introduced delay trigger in the moments of occurrence of false positives threshold elements 11, 12. While the length of the delay is determined by the duration of the output pulse of one-shot 27. The duration of this delay is chosen such that it was greater than the duration of the washing or drying of the electrodes 31, 33 or 32, 33 of the sensor 1 by surges or wave of the controlled fluid. In the case of permanent spray duration of such delay is chosen with regard to the rate of descent or ascent of the controlled liquid level. While the length of the delay is determined by the beginning of the false washing or drying of electrodes and the guarantee of the controlled liquid level below or above the signal electrode 31 or 32 of the sensor 1 after the beginning of his false positives.

The differentiator 13 is designed to generate pulses of negative polarity negative differential output e.g. the movements of the first and second threshold element 11, 12 to start the one-shot 27. The differentiator 13 made, for example, on the basis of a differentiating RC circuit consisting of series-connected capacitor, a first output which is the input of the differentiator 13 and resistor in parallel, which included a diode, the anode of which is connected to the connection point of the first output resistor and a second output capacitor, which is the output of the differentiator. Thus the cathode of the diode and the second terminal of the resistor RC circuit connected to the power supply voltage (see figure 1).

Structurally, the device is made as a single functional unit (see figure 1, figure 2, figure 3), which allows its installation on tanks with controlled liquid having a limited mounting space zone. This, in turn, can improve the operational characteristics of the device. When this terminal 14 connected to the output of the differentiator 13, terminal 29 connected to the connection point between the input of one-shot 27 and the second output of the third capacitor 28 and terminal 30 is connected to the connection point To the input of the trigger 15 and the first output key 25 are respectively first, second and third pins of the programming used to program the functionality of the device. When the terminal 14 and the terminal 29 are closed to each other, and the terminal 30 is connected to the terminal 23,which is the third output of the device, the device is transformed into the system of control and regulation of liquid level with disturbing its surface using its first and second outputs, which are respectively output terminals 20 and 21. When the capacitor 28 connected to the output of the differentiator 13, formed with a resistor and diode differentiator 13 differentiating circuit, forming a negative differential output voltage U5 threshold element 12 at the output of the differentiator 13 pulse voltage U8 level logic "0" to start the one-shot 27. In case of disconnection of the terminals 14 and 29 and the connection terminal 30 to terminal 23, the device is transformed into the system of control and regulation of liquid level with a calm its surface using its first and second outputs, which are respectively output terminals 20 and 21. When the terminal 14 and the terminal 29 are opened and the terminal 30 is disconnected from the terminals 23, i.e. terminals 14, 29, 30 are in a disconnected state, the device is transformed into a siren control of the upper fluid level using the third output device or detector control lower liquid level using the fourth output device. Moreover, the programming functionality of the device is performed by a simple method without changing its design poetisamiami or disconnection of terminals 14 and 29 and the connecting terminal 30 to terminal 23 or disable it from the terminal 23 when the wiring at the facility operation. Figure 1 is a diagram of the device depicted in this state, in which its functionality correspond to the functionality of the switches control the upper or lower liquid level, when the program pins 14, 29, 30 is disabled.

For a better understanding of the structure of the device and features of its design and use at the facility operation, providing increased functionality of the device and the improvement of its operational characteristics, listed below are some explanations.

Above it was noted that structurally, the proposed device is designed as one functional node, for example, in the cylindrical housing (see figure 2, figure 3). On one end of the body, which is the working end of the device has a tapered end face of the holder 2 with installed first ends of the signal and common electrodes 31, 32 and 33 of the sensor 1. At the other end of the housing is sealed to the first end of the connecting cable of a certain length, at the other end of which was the installation of a cable connector, for example, with pin contacts. Installation of the connector device is performed using a reciprocal connector (figure 1, figure 2, figure 3 not shown) with contact type "nest", is installed on the object of exploitation. Using this connector manufacturers is seeking articulation device. On the back side of mounting the electrical circuits of the voltage supply, installation wires to connect to the outputs of the device external loads and electrical circuits to terminals 14, 29, 30 programming.

In the case of the connection terminals 14, 29 between itself and the connecting terminal 30 to terminal 23, for example, by a method of soldering on a mating connector device, it functions as a system of control and regulation of liquid level in a control mode of the liquid level and maintain it at a fixed height with disturbing its surface. Using terminals 20 and 21, the first and second output devices, and terminals 23 and 24 as the third and fourth outputs to control external loads are not involved and used as a control conclusions to test the operation of the device or for the propagation of signals from the outputs of the repeaters 17 and 22 for the needs of other consumers of these signals at the facility operation. However, the output terminal 23, which is the third output of the device is simultaneously used together with the terminal 30, which is the third output programming, for programming the functionality of the device.

At open terminals 14, 29 and connected to the terminal 30 to the terminal device 23 functions as a system of control and regulation of liquid level is in the control mode of the liquid level and maintain it at a fixed height with a calm its surface. This uses the first and second output devices, and output terminals 23 and 24 as the third and fourth outputs to control external loads are not involved and used as a control conclusions to test the operation of the device or for the propagation of signals from the outputs of the repeaters 17 and 22 for the needs of other consumers of these signals at the facility operation.

When you need to manage industrial pumping units through electromagnetic starter with two control windings on it off and on, are utilized at the same time, respectively, the first and second outputs of the device. In the case of control of the pumping installation using a single electromagnetic relay with one control winding, is used to control only the second output device, which enables or disables the electromagnetic relay.

At open terminals 14 and 29 and disabled terminal 30 from the terminal device 23 is transformed into a siren control the upper liquid level, when you use the third output, or the siren control of the lower level, when using the fourth output, and first and second outputs, which are output terminals 20 and 21 to control external loads are not involved.

Look at how the device is tion in four different modes: maintain the liquid level at its fixed height from the disturbed surface of the liquid, in the mode of maintaining the liquid level at its fixed height with a calm liquid surface, the mode switch control upper liquid level and the mode switch controls the lower liquid level.

1. The operation of the device in the mode of maintaining the liquid level at its fixed height from the disturbed surface of the liquid.

This mode can be used vertical or horizontal mounting of the device in open and closed tanks, walls can be made of conductive or dielectric material. The device 37 is mounted on the object of operation in vertical or horizontal positions (see figure 2, figure 3). The device can be used in this mode under conditions of unlimited or limited space of the mounting area when the object operation device are tanks with large and small dimensions. Terminals 14 and 29 thus shorted to each other, and the terminal 30 is connected to the terminal 23. In this case you use the first and second outputs of the device, and its third and fourth outputs to control external loads are not involved.

When applying at time toon the device with a power supply unit 16 is the charge of the capacitor through the transition emitter-base of transistor n-p-n t the PA (see 1). When this transistor unit 16 opens, and through its transition collector-emitter served on the S-input of the trigger 15, the pulse voltage U1 with logical level "0" (see figure 4). As a result, the first and second outputs of the trigger 15 and respectively on the first and second output terminals 20 and 21 are set voltage U10 and U11 levels logic "0" and logic "1" respectively. In this case the led of the display unit 18 is extinguished, and the led display unit 19 is exposed. After the end of charge of the capacitor unit 16 of its transistor is closed and further on the operation of the circuit device is not affected, since its base is connected through a resistor to a common ground circuit device. Then the output of block 16 and the S-input of the trigger 15 is set to the voltage U1 with logical level "1". Through resistor differentiator 13 at its output and the input of one-shot 27 sets the voltage U8 with logical level "1". At the same time at the output of the one-shot 27 sets the voltage U9 level logic "0". However, the multivibrators 3 and 4 go into the mode of generation of electrical oscillations, as in the initial state in the tank 35 is controlled fluid 36 is absent, and the electrodes 31, 32, 33 of the sensor 1 are drained condition. Output pulse voltage multivibrators 3 and 4 are fed through the capacitor 5 is 6, regulators 7 and 8 to the inputs of the detectors 9 and 10, respectively. The amplitude value of the pulse voltage from the outputs of the multivibrators 3 and 4 are converted respectively by the detectors 9 and 10 in the constant voltage levels logic "1" and their outputs are fed to the inputs of threshold elements 11 and 12 respectively. Under the action of these stresses is the last switch in such a steady state in which their direct and inverse outputs are set to the voltage U3, U6 and U2, U5, respectively, with levels logic "1" and logical "0". As a result, the outputs of the repeaters 17 and 22 are respectively voltage U4 and U7 with logical levels "0"and the input of the differentiator 13 - voltage U3 with logical level "1". Along with this, to the J input and the K input of the trigger 15 with the direct output of the threshold element 12 and the output of the repeater 17 sets the voltage U6 and U4, respectively, with levels logic "1" and logical "0". This combination of logic signals to the J input and the K input of the trigger 15 confirms its original state, in which its inverse and direct outputs have voltage U10 and U11 levels logic "0" and logic "1" respectively. Then the led unit 18 display continues to be in a suppressed state, and the led unit 19 of the display in a lighted condition. With direct in the stroke of the trigger 15 through the output terminal 21 is energized U11 with logical level "1" to the control winding of the inclusion (figure 1 it is not shown) of the electromagnetic contactor of the pump installation. Then begins filling the tank 35 fluid 36, and a controlled liquid level in the tank 35 begins to climb up.

At time t1is the washing fluid 36 electrodes 32, 33 of the sensor 1. As a result through these electrodes and controlled liquid 35 to the input of the detector 10 is connected to the common ground circuit device. Then at the output of detector 10 is set to the voltage level of the logical "0", under which the threshold element 12 is switched in such a steady state, in which its forward and inverse outputs are respectively the voltage U6 and U5 with logical levels "0" and logical "1". But at the time of the positive voltage U5 supplied to the first output capacitor 28, the output of the differentiator 13 of the forming voltage pulse U8 level logic "0" occurs because the differentiator 13 generates the pulse only at the moment of appearance of the first output capacitor 28 negative differential voltage U5 output of the threshold element 12. So start the one-shot 27, forming at its output pulse voltage U9 with logical level "1" and the circuit of the keys 25, 26 does not occur. At the J input and the K input of the trigger 15 with the direct output of the threshold element 12 and the output of the repeater 17 set the meet is but the voltage U6 and U4 with logical levels "0", when the trigger 15 continues to maintain its previous state. As a result, in the moment of time t1the process of filling the tank 35 fluid 36.

At time t2the electrode 31 of the sensor 1 is washed by the liquid 36. In the through electrodes 31, 33 and controlled fluid 36 to the input of the detector 9 is connected to the common ground circuit device. Then at the output of the detector 9 is set to the voltage level of the logical "0", under which the threshold element 11 is switched in such a steady state, in which its inverted output, sets the voltage U2 with logical level "1"which is input to the repeater 17. In the moment of the negative differential output voltage U3 of the threshold element 11 (see figure 4) at the output of the differentiator 13 is formed of a pulse voltage U8 level logic "0". Under the action of the one-shot pulse 27 is triggered, and its output is generated pulse voltage U9 with logical level "1"which is fed to control inputs of the keys 25, 26. In the last closed at the time of the positive pulse voltage U9 output of one-shot 27. During the closed state of the key 25, the voltage U4 with logical level "1" from the output of the follower 17 To the input of the trigger 15 fails, and J-I is de To the input of the trigger 15 will continue to be, respectively, the voltage U6 and U4 levels logic "0". As a result, the trigger 15 continues to maintain the previous state for the closed state of the keys 25, 26. The decay of the pulse voltage U9 the one-shot 27 keys 25, 26 are opened, and from the output of the follower 17 To the input of the trigger 15 is energized U4 with logical level "1". As to the J input and the K input of the trigger 15 is set accordingly the voltage U6 and U4 with logical levels "0" and logical "1", it switches to this state when its inverse and direct outputs are respectively the voltage U10 and U11 levels logic "1" and logical "0". Then the led indicator 19 will go off and the led indicator 18 is exposed. At this point, with the inverted output of the trigger 15 through the output terminal 20 is energized U10 with logical level "1" to the control winding (figure 1 it is not shown) off of the electromagnetic contactor of the pump installation. In the pump unit is switched off, and the reservoir 35 fluid 36 at time t2ceases. Then the scheme of arrangement and position of the level of the controlled fluid 36 can be in this state until, until the start of its consumption.

After a time t2for example, begins p is the gathering of the controlled fluid 36. After a certain period of time at time t3is draining electrode 31 of the sensor 1. When this occurs, the disable input of the detector 9 from the common ground of the device, and from the output of the multivibrator 3 is fed to the input of the detector 9 pulse voltage, under which the output of the detector 9 and the input of the threshold element 11 is set to the voltage level of the logical "1". The threshold element 11 is switched to another state in which to its inverse and direct outputs are respectively the voltages U2 and U3 with the logical levels "0" and logical "1". But under the action of a positive differential voltage U3 supplied with the direct output of the threshold element 11 to the input of the differentiator 13, forming at its output pulse voltage U8 level logic "0" occurs because the differentiator 13 generates the pulse only negative differential input voltage U3. So start the one-shot 27 and shift keys 25, 26 does not occur. At the output of repeater 17 sets the voltage U4 with logical level "0"which is supplied To the input of the trigger 15. As to the J input and the K input of the trigger 15 is set accordingly the voltage U6 and U4 with logical levels "0", it retains its previous state when its inverse and direct outputs are set according to the state of the voltage U10 and U11 levels logic "1" and logical "0". In the pump unit continues to be in a disabled state, so at time t3the fluid flow 36 continues and the level continues to drop in the tank 35 down to the electrode 32 of the sensor 1.

After a certain period of time at time t4is draining electrode 32 of the sensor 1. The result is a disabling input of the detector 10 from the common ground circuit device and to the input of the detector 10 is fed from the output of the multivibrator 4 pulse voltage, which at its output and at the input of the threshold element 12 is set to the voltage level of the logical "1". The threshold element 12 is switched to the other stable state, in which its forward and inverse outputs are set to the voltage U6 and U5 with the logical levels "1" and logical "0", submitted respectively to the J-input of the trigger 15 and the first output capacitor 28. Negative differential output voltage U5 threshold element 12 at the output of the differentiator 13 is formed pulse voltage U8 level logic "0". Under the action of this pulse starts the one-shot 27 and forming at its output pulse voltage U9 with logical level "1"which is fed to control inputs of the keys 25, 26. In the last closed at the time of the positive pulse is Lisa voltage U9 output of one-shot 27. During the closed state of the key 26, the voltage U6 with logical level "1" to the J-input of the trigger 15 is not, and to the J input To the input set voltage levels logic "0". As a result, the trigger 15 stores the previous state for the closed state of the keys 25, 26. The decay of the pulse voltage U9 the one-shot 27 keys 25, 26 are opened, and the direct output of the threshold element 12 to the J-input of the trigger 15 is energized U6 with logical level "1". As to the J input and the K input of the trigger 15 is set accordingly the voltage U6 and U4 with the logical levels "1" and logical "0", it switches to this state when its inverse and direct outputs are respectively the voltage U10 and U11 levels logic "0" and logical "1". Then the led indicator 18 is extinguished, and the led indicator 19 is exposed. At this moment, the output of the trigger 15 through the output terminal 21 is energized U11 with logical level "1" to the control winding (figure 1 it is not shown) the solenoid actuator of the pump installation. In the pump unit turns on and starts refilling the tank 35 fluid 36. When the liquid level 36 begins to climb up the tank 35 to the electrode 31.

On this first cycle control and regulation of liquid level, engaged in the W and begins the second cycle of operation of the device according to the algorithm described above in the first cycle of operation of the device. The second cycle of operation of the device shown in figure 4, starting from the date of expiry of the pulse voltage U9, located in the time interval t4-t5and until the end of the pulse voltage U9 following the time t8(see figure 4).

Thus, the overall algorithm of the device maintain the liquid level at its fixed height with disturbing its surface can be represented as follows.

In the initial state, when the tank 35, the liquid 36 is missing, all the electrodes of the sensor 1 are drained condition at the time of the power device turns on the pump unit, and starts filling the tank 35 fluid 36. Its level begins to rise up to the electrodes 31, 32. 33. When flushing of the electrodes 32 and 33, the device continues to be filled with fluid 36. At the time of flushing electrode 31 occurs with a delay determined by the length of the output voltage pulse of one-shot 27, disconnect the pump, and the flow of the liquid in the tank 35 is stopped. From this point there is a "capture" probe 1 liquid level 36, and begins the process of control and regulation of liquid level 36 on its fixed in the cell, equal to the height of installation of the electrode 33, within the width of the area of regulation, defined by the distance between the outer surfaces of the electrodes 31 and 32. Next, the flow of liquid and the liquid level 36 begins to descend to the electrode 32. At the time of drying of the electrode 32 occurs with a delay determined by the length of the output voltage pulse of one-shot 27, enabling the pump unit and the replenishment tank 35 fluid 36. As a result, the liquid level 36 begins to climb up to the electrode 31. At the time of rinsing the electrode 31 is delayed disconnect the pump, and the cycle of control and regulation of fluid between the electrodes 31 and 32 is repeated. Moreover, the control cycles of the liquid 36 will continue to repeat until, until the supply voltage switching device. The process of monitoring and maintaining the liquid level 36 on the fixed height is performed with regulation accuracy equal to

(±ΔL:2L)×100%,

where ΔL is the width of the zones of regulation (distance between outer surfaces of the electrodes 31 and 32 in the horizontal mounting device or the distance between the ends of the signal electrodes 31 and 32 vertical mounting devices);

L is the nominal value of the height level of the controlled fluid 36 that is installed in the middle of the Irene area of regulation.

For example, if the nominal specified height level of the controlled fluid L=1 m and the width of the zone regulation ΔL=5 cm accuracy regulation (maintaining) the liquid level at this height is 2.5%.

2. The operation of the device in the mode of maintaining the liquid level at its fixed height with a calm liquid surface.

This mode can be used vertical or horizontal mounting of the device in open and closed tanks, walls can be made of conductive or dielectric material. When this device is installed at the facility operation in vertical or horizontal positions (see figure 2, figure 3). The device can be used in this mode under conditions of unlimited or limited space of the mounting area when the object operation device are reservoirs of large and small dimensions.

In this mode, the terminals 14 and 29 are opened and the terminal 30 is connected to the terminal 23. Thus the output of the differentiator 13 is disconnected from the input of one-shot 27 and the second output capacitor 28, and the operation of the device in this mode, the differentiator 13, the condenser 28, the one-shot 27, keys 25, 26 have no effect (see figure 1). And in this case you use the first and second outputs of the device, and its third and fourth outputs of the La control external loads are not involved.

When applying at time t0on the device with a power supply unit 16 is the charge of the capacitor through the transition emitter-base of transistor n-p-n type (see Fig 1). When this transistor unit 16 opens, and through its transition collector-emitter served on the S-input of the trigger 15, the pulse voltage U1 with logical level "0" (see figure 5). As a result, the first and second outputs of the trigger 15 and the first and second output terminals 20 and 21 are set voltage U10 and U11 levels logic "0" and logic "1" respectively. In this case the led indicator 18 is extinguished, and the led indicator 19 is exposed. After the end of charge of the capacitor unit 16 of its transistor is closed and further on the operation of the circuit device is not affected, as its base through a resistor connected to a common ground circuit device. Then the output of block 16 and the S-input of the trigger 15 is set to the voltage U1 with logical level "1". At the output of the differentiator 13 through resistor sets the voltage U8 with logical level "1". At the same time at the output of the one-shot 27 sets the voltage U9 level logic "0". However, the multivibrators 3 and 4 go into the mode of generation of electrical oscillations, as in the initial state in the tank 35 is controlled fluid 36 is absent, and the electrodes 31, 32, catchya 1 are drained condition. Output pulse voltage multivibrators 3 and 4 are fed through capacitors 5 and 6, the sliders 7 and 8 to the inputs of the detectors 9 and 10, respectively. The amplitude value of the pulse voltage from the outputs of the multivibrators 3 and 4 are converted respectively by the detectors 9 and 10 in the constant voltage levels logic "1" and their outputs are fed to the inputs respectively of threshold elements 11 and 12. Under the action of these stresses is the last switch in such a steady state in which their direct and inverse outputs are set to the voltage U3, U6 and U2, U5, respectively, with levels logic "1" and logical "0". As a result, the outputs of the repeaters 17 and 22 are respectively voltage U4 and U7 with logical levels "0"and the input of the differentiator 13 - voltage U3 with logical level "1". Along with this, to the J input and the K input of the trigger 15 with the direct output of the threshold element 12 and the output of the repeater 17 sets the voltage U6 and U4, respectively, with levels logic "1" and logical "0". This combination of logic signals to the J input and the K input of the trigger 15 confirms its original state, in which its inverse and direct outputs have voltage U10 and U11 levels logic "0" and logic "1" respectively. Then the led unit 18 display continues to be in pogashenie the state, and the led unit 19 display - illuminated condition. With direct access to the trigger 15 through the output terminal 21 is energized U11 with logical level "1" to the control winding of the inclusion (figure 1 it is not shown) of the electromagnetic contactor of the pump installation. Then begins filling the tank 35 fluid 36, and a controlled liquid level in the tank 35 begins to climb up.

After a certain period of time at time t1is the washing fluid 36 electrodes 32, 33 of the sensor 1. As a result through these electrodes and controlled fluid 36 to the input of the detector 10 is connected to the common ground circuit device. Then at the output of detector 10 is set to the voltage level of the logical "0", under which the threshold element 12 is switched in such a steady state, in which the direct current output is the voltage U6 with logical level "0"which is supplied to the J-input of the trigger 15, and at its inverted output and at the input and output of the repeater 22, respectively, the voltage U5 and U7 with levels logic "1". At the J input and the K input of the trigger 15 with the direct output of the threshold element 12 and the output of the repeater 17 are set voltage, respectively U6 and U4 levels logic "0"when the trigger 15 continues to maintain its previous state. In the results at time t 1the process of filling the tank 35 fluid 36.

At time t2the electrode 31 of the sensor 1 is washed by the liquid 36. In the through electrodes 31, 33 and controlled fluid 36 to the input of the detector 9 is connected to the common ground circuit device. Then at the output of the detector 9 is set to the voltage level of the logical "0", under which the threshold element 11 is switched in such a steady state, in which its inverted output is set to the voltage U2 with logical level "1"which is input to the repeater 17, and to direct the output - voltage U3 with logical level "0", which is input to the differentiator 13. This negative differential voltage U3 at the output of the differentiator 13 is formed of a pulse voltage U8 level logic "0", but the input of the one-shot 27 this pulse does not pass, because of Lemma 14 and 29 are in open condition. So start the one-shot 27 does not occur, and its output continues to be the voltage U9 level logic "0". However, at the output of the follower 17 and the input of the trigger 15 is set to the voltage U4 with logical level "1". As to the J input and the K input of the trigger 15 is set accordingly the voltage U6 and U4 with logical levels "0" and logical "1", it switches to t the some condition, with its inverse and direct outputs are respectively the voltage U10 and U11 levels logic "1" and logical "0". Then the led indicator 19 will go off and the led indicator 18 is exposed. At this point, with the inverted output of the trigger 15 through the output terminal 20 is energized U10 with logical level "1" to the control winding (figure 1 it is not shown) off of the electromagnetic contactor of the pump installation. In the pump unit is switched off, and the reservoir 35 fluid 36 at time t2ceases. Then the scheme of arrangement and position of the level of the controlled fluid 36 can be in this state until, until the start of its consumption.

After a time t2for example, begins the flow of the controlled fluid 36. After a certain period of time at time t3is the drainage of the signal electrode 31 of the sensor 1. When this occurs, the disable input of the detector 9 from the common ground of the device, and from the output of the multivibrator 3 is fed to the input of the detector 9 pulse voltage, under which the output of the detector 9 and the input of the threshold element 11 is set to the voltage level of the logical "1". The threshold element 11 is switched to another state in which to its inverted output and input will repeat the La 17 sets the voltage U2 with logical level "0". As a result, the output of the follower 17 and the input of the trigger 15 is set to the voltage U4 with logical level "0". As to the J input and the K input of the trigger 15 is set accordingly the voltage U6 and U4 with logical levels "0", it continues to keep the previous state in which its inverse and direct the output voltage is set accordingly U10 and U11 levels logic "1" and logical "0". As a result, the fluid flow 36 continues and the level continues to drop in the tank 35 down to the electrode 32 of the sensor 1.

After a certain period of time at time t4is the drainage of the signal electrode 32 of the sensor 1. The result is a disabling input of the detector 10 from the common ground circuit device and to the input of the detector 10 is fed from the output of the multivibrator 4 pulse voltage, which at its output and at the input of the threshold element 12 is set to the voltage level of the logical "1". Then the threshold element 12 is switched to the other stable state, in which its forward and inverse outputs are respectively the voltage U6 and U5 with the logical levels "1" and logical "0", submitted respectively to the J-input of the trigger 15 and the first output capacitor 28, the input of the repeater 22, the output of which sets the voltage U7 level is oricheskogo "0". Negative differential output voltage U5 threshold element 12 forming voltage pulse U8 differentiator 13 and, therefore, run the one-shot 27 not occur, as the terminals 14 and 29 are in open condition. Therefore, forming the output of one-shot 27 of the pulse voltage U9 level logic "1" does not occur, and its output continues to be the voltage U9 level logic "0". As at the J input and the K input of the trigger 15 is set accordingly the voltage U6 and U4 with the logical levels "1" and logical "0", it switches to this state when its inverse and direct outputs are respectively the voltage U10 and U11 levels logic "0" and logical "1". Then the led indicator 18 is extinguished, and the led indicator 19 is exposed. At this moment, the output of the trigger 15 through the output terminal 21 is energized U11 with logical level "1" to the control winding (figure 1 it is not shown) the solenoid actuator of the pump installation. In the pump unit turns on and starts refilling the tank 35 fluid 36. The level of the controlled fluid 36 begins to climb up to the electrode 31 of the sensor 1. On this first cycle control and regulation of liquid level ends, and machinae the Xia, the second cycle of operation of the device according to the algorithm, described above in the first cycle of operation of the device. The second cycle of operation of the device shown in figure 5, starting from time t4and before time t8.

General algorithm of the device in the mode of maintaining the liquid level at its fixed height with a calm its surface is similar to the algorithm of its operation, maintain the liquid level at its fixed height with disturbing its surface, as described above. The difference algorithm of operation of the device in this mode is the lack of turn-on delay and off the pump in the moments of the drain electrode 32 and the rinsing of the electrode 31, respectively, since in this mode terminals 14 and 23 of the device open.

3. The operation mode of the detector at the top level.

In this mode, the terminals 14, 29 are in the open state, and the terminal 30 is disconnected from the terminals 23, i.e. all pins of the programming is in a disabled state. Thus the output of the differentiator 13 is disconnected from the input of one-shot and the second output capacitor 28, and the operation of the device in this mode, the differentiator 13, the condenser 28, the one-shot 27, keys 25, 26, the trigger 15 have no effect. And in this case you use the third output of the device, and its first, second and fourth outputs to control external loads is not pressed is described. In this case, the device 37 functions as a detector of the upper level of the liquid 36. The device allows for vertical and horizontal mounting on the object operation (see figure 2, figure 3). Operation in this mode is described by the diagrams U2 and U4 shown in figure 5. The device in this mode of operation can be set with another device operating in the modes of control and regulation of liquid level with anxious or relaxed its surface, and be used as an emergency signaling device, the upper limit of the working liquid level 36 in the tank 35 in case of emergency overflow tank 35 is controlled by the liquid 36.

4. The operation mode of the detector of the lower level.

In this mode, the terminals 14, 29 are in the open state, and the terminal 30 is disconnected from the terminals 23, i.e. all pins of the programming is in a disabled state. Thus the output of the differentiator 13 is disconnected from the input of one-shot 27 and the second output capacitor 28, and the operation of the device in this mode, the differentiator 13, the condenser 28, the one-shot 27, keys 25, 26, the trigger 15 have no effect. And in this case you use the fourth output of the device, and its first, second and third outputs to control external loads are not involved. In this case, eliminate the STV operates as a detector of the lower liquid level 36. In this case, the device 37 allows for vertical and horizontal mounting on the object operation (see figure 2, figure 3). Operation in this mode is described by the diagrams U5 and U7, shown in figure 5. The device in this mode of operation can be set with another device operating in the modes of control and regulation of liquid level with anxious or relaxed its surface, and be used as an emergency alarm lower limit of the working liquid level 36 in the tank 35 in case of emergency draining of the tank 35 is controlled by the liquid 36.

In addition, the two devices acting as detectors of the upper and lower levels can also be set with another device operating in the modes of control and regulation of liquid level with anxious or relaxed its surface, and be used at the same time as emergency alarms upper and lower limit of the working fluid 36 in the tank 35 in case of emergency overflow fluid 36 or draining of the tank 35, respectively.

Thus, the proposed device in comparison with analogues has several advantages: the system of control and regulation of liquid level in a single compact, functional site, improved exploitatio the basic characteristics, horizontal mounting method, the ability to control and maintain the liquid level at a given fixed height, control of the liquid level with the deceased and moved its surfaces, a simple way of programming functionality, extended range of managed loads applied on the exploitation of the limited space of the mounting area.

In addition, the execution circuit device using the semiconductor and (or) hybrid technology chipset allows to significantly reduce its overall dimensions, material usage and improve performance. This functionality provides in comparison with analogues flexibility of the device in operation with minimum cost indices.

Device control and regulation of liquid level, containing the first multivibrator, the liquid level sensor with holder, a trigger, a first detector, the first and second threshold elements, the first and second repeaters, the first and second regulators sensitivity, the first and second capacitors, characterized in that it introduced the second detector, differentiator, an input connected to the direct output of the first threshold element, and its output is p the pout output programming the setting unit in the initial state, the output of which is connected to the S-input of the trigger, the inverse and the direct outputs of which are respectively the first and second outputs of the device, the third capacitor, the first output of which is connected to the inverse output of the second threshold element, the one-shot, whose input is connected to the second output of the third capacitor, and the point of connection of its input and the second output of the third capacitor is the second output programming, the first and second keys voltage, the first conclusions which are connected respectively To the input and the J-input of the trigger, the latter findings - with a common "ground" device inputs control - the output of the one-shot, the first and second display units, the inputs of which are connected respectively to the inverse and direct outputs trigger the second multivibrator, and the liquid level sensor is made conductometric with three conductive electrodes, the first and second electrodes which are signal electrodes, the third electrode connected to the common ground of the device, the common electrode is made longer than the first and second electrodes and having a side of the first end of the bend forming its l-shaped form toward the second electrode, structurally made longer than the first electrode and the installed offset to the side lane is wow electrode relative to the first end of the third electrode, one end of the holder, which is the working end of the device is structurally designed in the form of a circular cone, the conical surface of which the first, second and third electrodes, the first ends of which are situated on the side of the conical surface of the holder, mounted in the same plane drawn through the axis of symmetry of the holder, along which has a third electrode on both sides of which are parallel to this axis, the first and second electrodes, and the outputs of the first and second multivibrators connected with the first conclusions of the respective capacitors, the latter findings are connected to the first conclusions of the relevant controls for gain, the second set of conclusions which are connected with inputs of the respective detectors to the inputs of which are connected respectively to the first and second electrodes of the liquid level sensor, and direct the output of the second threshold element connected to the J input of a trigger, and outputs the first and second detectors are connected to the inputs of the respective threshold element, inverted outputs of which are connected to the inputs respectively of the first and second repeaters, the outputs of which are respectively the third and fourth outputs of the device, which is designed to be placed in one functional node, and the point of connection To the input trigger and the first turn is Yes the first key voltage is the third output programming when connected with the third output device and the circuit between the first and second findings of the programming device is transformed into the system of control and regulation of liquid level with disturbing its surface using the first and second outputs of the device, when the open state of the first and second findings programming and closed between a third output programming and third output devices in the system of control and regulation of liquid level with a calm its surface using the first and second outputs of the device, and when the findings programming - in detector monitoring the top of the fluid level using the third output or lower the liquid level using the fourth output device.



 

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FIELD: machine building.

SUBSTANCE: invention relates to field of computer-aided manufacturing in machine building and is provided for workflow automation, related to control and regulation of liquid mediums. Device is structurally implemented in the form of two functional assemblies and allows two programming leads of functional capabilities and four outlets. At closed programming leads device is transformed into monitoring and regulation system of liquid level with usage of the first and the second outlets of device, providing monitoring mode and keeping of liquid level at fixed height and mode of filling and emptying of a reservoir with liquids. At open programming leads device is transformed into set of level control of top and bottom levels of controlled liquid of conducted type, outlets of which are correspondingly the third and the fourth outlets of the device. Device provides vertical, horizontal and complex (vertical installation of one and horizontal installation of other functional assembly) methods of installation. Device provides setting of control accuracy of liquid level in control mode and keeping of liquid level at its fixed height. Invention provides control of loads in the form of electromagnetic relay, two windings of contactor starter and outlets of logic elements.

EFFECT: extended capabilities of device by means of providing of regulation of liquid flows level at fixed height with ability of programming of its functional capabilities and nomenclature increasing of controllable loads and methods of its installation.

5 dwg

FIELD: machine building.

SUBSTANCE: invention relates to field of computer-aided manufacturing in machine building and is provided for workflow automation, related to control and regulation of liquid mediums. Device is structurally implemented in the form of one functional assembly, including conductometric sensor of liquid level, connected to sensitivity control, detectors, connected to second lead sensitivity control, threshold elements, connected to detectors, differentiator, unit for placement into initial state, JK- trigger, monostable circuit, replicator and indicator units. Additionally device contains three programming leads of its functional capabilities and four outlets. At closed first and second programming leads and connection of the third programming lead to third device outlet it is transformed into control and regulation system of liquid level with its agitated surface and usage of the first and the second outlets of device, providing verification and liquid level control mode at fixed height. At opened first and second programming leads and connected to each other third programming lead and third outlet of the device it is transformed into monitoring and regulation system of liquid with its smooth surface in the mode of monitoring and keeping of liquid level at its fixed height. At disconnected programming leads device is transformed into warning assembly of monitoring of top level of liquid with usage of the third outlet of device or warning assembly of monitoring of bottom level of liquid with usage of fourth outlet of device. Device provides vertical and horizontal methods of erection.

EFFECT: expansion of functional capabilities of the device and increasing of nomenclature of controllable loads and methods of its erection and also improvement of operational performance.

5 dwg

FIELD: physics; control.

SUBSTANCE: invention relates to automation of manufacturing processes in machine building and is meant for automating technological processes related to monitoring and controlling liquid media. The device is made in form of two functional assemblies and has three terminals for programming its functionalities and four outputs. The device has two level sensors, two multivibrators, capacitors, two detectors, two sensitivity controllers, two threshold elements, a differentiator, a JK flip-flop, a unit for establishing initial state, two repeaters and two display units. When the first and second programming terminals are closed and when the third programming terminal is connected to the third output, the device is transformed into a system for monitoring and controlling liquid level with its excited surface using the first and second outputs, which provides the mode for monitoring and maintaining the liquid level at a fixed height and the mode for filling and emptying the reservoir. When the first and second programming terminals are open and the third programming terminal is connected to the third output, the device is transformed into a system for monitoring and controlling liquid with its calm surface in the mode for monitoring and maintaining the liquid level at a fixed height and in the mode for filling and emptying the reservoir. The device provides vertical, horizontal and combined (vertical mounting of one and horizontal mounting of the other functional assembly) mounting methods.

EFFECT: increased functionalities of the device and wider range of controlled loads and mounting methods.

6 dwg

Tilt sensor // 2397443

FIELD: physics.

SUBSTANCE: tilt sensor consists of U-shaped tubular hydraulic gauge 1, filled with partially magnetic liquid 3. The ends of the tube are closed with covers 2. On one end of the hydraulic gauge there is a winding 4 connected to a preset resistor 7, indicator 5 and power supply 6.

EFFECT: remote and automatic determination of tilt angle.

3 dwg

FIELD: transport, distribution.

SUBSTANCE: proposed method comprises filling the tank with fluid and semi-fluid mixes, setting volumetric portion of mixes and draining said tank in dispensing said mixes. Mix level capacitive transducer is arranged inside tank along its height to be filled with mixes at a time with said tank. Structural characteristics of transducer and electrical performances depending thereon are invariable over its height in empty state of both transducer and tank. Maximum and minimum tank mix levels are set by appropriate transducers. Tank filling is terminated when mix level reaches that of mix top level transducer and started when it reaches that of mix bottom level transducer. Electric oscillation signal is generated at capacitive transducer. Electric oscillation signal amplitude is measured at capacitive transducer. Mix level signal is generated subject to measured electric oscillation signal amplitude at capacitive transducer. With top level transducer level reached by mix level, product of height from tolerable top to bottom mix levels and said electric oscillation amplitude is determined for said time interval. Mix level signal is corrected in relation to measured electric oscillation signal amplitude at capacitative transducer. With tank drained at beginning of another proportioning cycle, initial mix level generated signal is determined. Final proportioning mix level signal is defined as difference between mix level initial signal and quotient of mix volumetric portion and tank horizontal section inner area. Definite final level signal is compared with corrected mix level signal to terminate volumetric proportioning of mixes if said signals are equal. Proposed device comprises tank, mix level capacitative transducer, mix top and bottom level transducers, electric oscillation generator, signal transducer, pump and shutter control unit, pump and shutter assemblies and mix measured level indicator. Output of said generator is connected with capacitative transducer and signal transducer input. Mix top level transducer output is connected to first input of pump and shutter control unit with its second input and outputs connected to mix top level transducer output and appropriate inputs of pump and shutter assembly. Proposed device comprises also selector, setter of top measured mix level signal, mix portion and next mix proportioning moment start, computer and comparator. Signal transducer output is connected to computer first input and selector first signal input. To selector second control input connected is connection of mix top level transducer output, pump and shutter control unit first input and comparator output. Selector output is connected with computer second input. Computer third and fourth inputs are connected to first and second outputs of top measured mix level and next proportioning moment setting unit. Computer first input is connected to mix measured level indicator input and comparator first inverting input while its second output is connected to comparator second non-inverting input.

EFFECT: higher accuracy of control and proportioning.

2 cl, 3 dwg

FIELD: instrumentation.

SUBSTANCE: proposed method consists in breaking down power output in operation at load and idling into intervals defined experimentally. Then, fuel output at each interval of power output is calculated by appropriate formula. Obtained fuel consumption is compared to actual magnitude. This allows comparing actual consumption with design consumption without breakdown into power output and idling. Design total fuel consumption results from adding design fuel consumption and that in idling at preset time interval.

EFFECT: higher accuracy of determination.

1 dwg

FIELD: measurement equipment.

SUBSTANCE: device comprises a generator of a high-frequency signal, a resistor, a level sensor, at least one pair - the first and second electrodes of a conducting material, installed at the specified distance d from each other in a holder from a dielectric material, a diode, a low pass filter (LPF), a unit of potential shift and a unit of output signal generation. At the same time the high-frequency signal generator is connected with the serially connected resistor, semiconductor diode, LPF, the unit of potential shift and the unit of output signal generation. The output from the upper end of the first electrode is connected to the common output of the resistor and the semiconductor diode, the output from the upper end of the second electrode - to an earth bus, and lower ends of both electrodes are submerged below the level of the measured water surface.

EFFECT: provision of higher resolving capacity by time, frequency and amplitude of measured physical values, higher functional flexibility, simplicity of realisation, increased reliability.

11 cl, 3 dwg

FIELD: measurement equipment.

SUBSTANCE: device contains two conductors designed as, at least, one conductor connected to the electronic indicator which is designed as resistance measuring instrument, meanwhile each conductor is placed in a conducting shell from conductive polymeric composition, and between conducting coatings and around them the water-permeable shell from capillary and porous material is located.

EFFECT: enlarging functional capabilities.

6 cl, 2 dwg

FIELD: engines and pumps.

SUBSTANCE: invention relates to wireless fuel sensors for fuel tanks of vehicles. Provided is a fuel tank of a vehicle comprising a housing defining an inner region, a fuel level sensor connected to interior of device for radio frequency identification (RFID), electronically connected to fuel level sensor and operable for wireless transmission of signal indicative of fuel level in fuel tank and fuel pump inside fuel tank and which is part of host, which provides power to RFID device. Level sensor is sensitive to pressure of fuel and is a wireless device located at a point of fuel tank, remote from fuel pump. Another version is a fuel tank, comprising a housing having first and second interior regions, fuel pump is disposed in first interior region fuel intake device arranged in second interior region and in fluid communication with fuel pump, wireless fuel level sensor disposed in second interior region. Level sensor includes a strain gauge, in which electric resistance changes in response to pressure of fuel level.

EFFECT: proposed inventions are aimed at reduction of additional holes for leakage of fuel from fuel tank due to absence of wires, connecting fuel level sensor with external components.

9 cl, 9 dwg

FIELD: test and measurement equipment.

SUBSTANCE: invention relates to test and measurement equipment and may be used to measure inclination angles of objects and equipment installed on them. Angle measurement device mounted to object comprises a vertically arranged panel hollow toroid of paramagnetic material on which is wound a primary winding connected to output of sound generator. Above primary wind is wound a secondary winding comprising two identical sections by covering half of toroid and connected in series in opposite directions, free ends of secondary windings are connected to measuring instrument. Said toroid is half filled with a magnetic fluid.

EFFECT: technical result of disclosed group of inventions is improved measurement accuracy and reduced material and time costs, ensuring linearity of relationship between output signal and inclination angle.

2 cl, 2 dwg

FIELD: physics, measuring.

SUBSTANCE: system contains a consistently joined comparison device - the adder, a digital controller of the fluid flux rate, object the regulations sweepped by a feedback, digital correcting proportional and integrated controllers, comparison devices, the block of insert of a correcting proportional controller and the filter of low frequencies. Current values of level of a fluid in capacity-collection from an exit of object of regulation arrive on an inlet of the filter of low frequencies and on an inlet of the block of insert of a correcting proportional controller.

EFFECT: increase of dynamic accuracy of regulation of the rate of flux of a fluid on level in capacity-collection in the conditions of activity of various perturbations at the expense of digital correction under the integrated law of the assignment to a controller of the rate of flux of a fluid on the filtered (rounded) values of level and insert of proportional correction making in algorithm at an exit of level from field of the "smooth" regulation.

1 dwg

FIELD: machine building.

SUBSTANCE: invention relates to field of computer-aided manufacturing in machine building and is provided for workflow automation, related to control and regulation of liquid mediums. Device is structurally implemented in the form of two functional assemblies and allows two programming leads of functional capabilities and four outlets. At closed programming leads device is transformed into monitoring and regulation system of liquid level with usage of the first and the second outlets of device, providing monitoring mode and keeping of liquid level at fixed height and mode of filling and emptying of a reservoir with liquids. At open programming leads device is transformed into set of level control of top and bottom levels of controlled liquid of conducted type, outlets of which are correspondingly the third and the fourth outlets of the device. Device provides vertical, horizontal and complex (vertical installation of one and horizontal installation of other functional assembly) methods of installation. Device provides setting of control accuracy of liquid level in control mode and keeping of liquid level at its fixed height. Invention provides control of loads in the form of electromagnetic relay, two windings of contactor starter and outlets of logic elements.

EFFECT: extended capabilities of device by means of providing of regulation of liquid flows level at fixed height with ability of programming of its functional capabilities and nomenclature increasing of controllable loads and methods of its installation.

5 dwg

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