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 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.

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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 G01F, CL e, 34, "Compensation optical sensor", 14.05.1969).

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

1) to operate in the mode of filling and emptying of the tank 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 and (or) two coil of the electromagnetic actuator pump units;

3) to produce horizontal or combined (vertical mounting single and horizontal mounting another sensor) mounting fluid-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 device is istwo control, containing the first and second fluid-level sensor, the first and 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 combined horizontal and vertical mounting single and horizontal mounting another sensor) mounting fluid-level sensor on the object of their operation, because the design of this device allows only vertical mounting the sensors liquid level;

3) allows you to manage various types of loads, such as the winding of the electromagnetic relay and (or) two coil of the electromagnetic actuator pump installations.

The closest the technical nature of the proposed solution is the control device, containing multivibrator, the liquid level sensor, the first and second triggers, the first and second repeaters, 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) design it 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;

2) does not provide horizontal and combined methods of mounting the fluid-level sensor, because the device is designed to produce only vertical way of their mounting on the object of operation;

3) does not allow the programming of its functionality;

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

Solved by the invention is the task of expanding the functionality of the device by regulating the level of liquid media at a fixed height with the possibility of programming the I its functionality and increase the range of controlled loads, and methods of installation.

This object is achieved in that in the device control and regulation of liquid level, containing the first multivibrator, the first liquid level sensor, the first and second triggers, the 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 a second liquid level sensor, the second detector, the output of which is connected to the input of the second threshold element, the first and second differentiator, the inputs of which are connected with the direct and inverse outputs of the respective threshold element and with the inputs of the respective repeaters, the setting unit to its original state whose output is connected to the output of the second differentiator, R-input of the first flip-flop whose output is the first output device, the S-input of the second trigger, R-input of which is connected to the S-input of the first flip-flop and its output is the second output, the first and second display units, the inputs of which are connected to the outputs of the respective triggers the second flip-flop, while the fluid-level sensor is made conductive, each of which contains two conductive electrodes, one of which is a signal electrode, and the other common electrode is made longer than the signal electrode and connected to the connected to the common ground of the device, 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 to the signal electrodes of the respective sensors, liquid level, and the outputs of the first and second repeaters are respectively the third and fourth outputs of the device, which is structurally designed in the form of two functional units, the first of which includes series-connected first multivibrator, condenser, control sensitivity, the detector, the threshold element, the repeater, and the first liquid level sensor and a differentiator with the relevant links, the second node, the rest of the circuit device, and the output of the first differentiator and the connection point of the S-input and R input respectively of the first and second triggers are the conclusions of the programming functionality of the device, when the circuit in which the device is transformed into the system of control and regulation of liquid level using its first and second outputs, and when the break - in set of detectors control the upper and lower fluid levels, which are from therefore, its first and second functional units of the device, using the third and fourth outputs of the device.

Figure 1 shows the functional diagram of the sensor; figure 2 - vertical and horizontal mounting in the mode of filling and emptying of the tank; figure 3 - vertical and horizontal mounting of the device in the mode of maintaining the level of liquid is it a fixed height with unlimited space mounting area; figure 4 - vertical and horizontal mounting of the device to maintain the liquid level at its fixed altitude with limited mounting space zone; figure 5 - diagram of stresses, explaining the operation of the device.

The device includes first and second sensors 1, 2 liquid level, 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 output of the mi, respectively, the first and second detectors 9, 10, the first and second differentiator 13, 14, the inputs of which are connected to the direct and inverted outputs, respectively, of the first and second threshold elements 11 and 12, the first RS-flip-flop 15, the second RS-trigger 16, block 17 installation in the initial state of the circuit device, the output of which is connected to the output of the second differentiator 14, R-input of the first flip-flop 15, the S-input of the second trigger 16, the R-input of which is connected to the S-input of the first flip-flop 15, the first and second repeaters 18, 19, made for example on the base of the transistor n-p-n type, connected in the circuit emitter follower whose inputs are connected to the direct and inverse inputs respectively of the first and second threshold elements 11 and 12, the first and second blocks 20, 21 display, the inputs of which are connected to the outputs respectively of the first and second RS-flip-flops 15 and 16, first and second output terminals 22 and 23 connected respectively to the outputs of the first and second triggers, and which respectively the first and second output devices, third and fourth output terminals 24 and 25 are connected to the outputs respectively of the first and second repeaters 18 and 19 which are respectively the third and fourth output devices.

Each sensor 1, 2 liquid level is made, for example, conductive in the form of two conductive electrodes, one of which is a signal electrode and the other the common electrode. The signal electrodes of the first and second sensors 1, 2 levels are connected to the inputs respectively of the first and second detectors 9, 10. Common electrodes of both sensors 1, 2 are connected to a common ground circuit device. Structurally, the common electrodes of the sensors 1, 2 is made longer than the signal electrodes for identification and orientation of the device in various ways on-site installation operation. In addition, the ratio of the length of the signal and common electrodes of the sensors provides all the modes and methods of mounting the device to the flushing or dewatering of the common electrode of the liquid level sensor is always the first or simultaneously with the signal electrode. This, in turn, provides in any of the fluid level control and regulate the presence of the controlled fluid at a potential common ground device or out of contact with the electrodes of the sensors 1, 2.

Signal to the excitation electrodes of the sensors 1, 2 is the AC voltage of low frequency, supplied with the respective outputs of the multivibrators 3 and 4. This allows you to avoid polarization of the electrodes of the sensors 1, 2 and of the processes of electrolysis and, as a consequence, the loss of sensitivity due to the deposition of salts and significantly extend their lifespan. Signal and a common electrode mitchiko is 1, 2 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 coating according to the type of the controlled fluid.

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 is assigneo Converter 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 LI transducers AC voltage to DC. M: Owls. radio, 1977, s, RES, b).

Differentiator 13, 14 are designed to generate pulses of negative polarity negative differential output voltages U2 and U3, respectively, the first and second threshold elements 11, 12 to control the triggers 15 and 16, respectively. Each differentiator 13, 14 made, for example, on the basis of a differentiating RC circuit consisting of series-connected capacitor and resistor in parallel, which included a diode, the anode of which is connected to the connection point of the first terminals of the resistor and capacitor, which is the output of the corresponding differentiator. The input of the differentiator is the second output capacitor RC circuit, and the cathode of the diode and the second terminal of the resistor RC circuit connected to the power supply voltage (see figure 1).

Unit 17 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 unit 17, and the second output resistor and the emitter of the transistor unit 17 connected to a common ground circuit device. The second output capacitor connected to the source voltage the I power, and the collector of the transistor, which is the output of the unit 17 is connected to the output of the differentiator 14, R-input of the trigger 15 and S-input of the trigger 16. The block 17 is designed for installation schematic of the device to its original state at the time of submission to his power.

Each display unit 20, 21 made, for example, based on (see figure 1) series-connected resistor, a first output to output a corresponding trigger 15, 16, and led, the cathode of which is connected to the common ground circuit device. Blocks 20, 21 display are designed for visual inspection of the feed load control signals from outputs of the first and second triggers 15 and 16, respectively, and control a working state of the device.

The outputs of the trigger 15, 16 and repeaters 18, 19 are made 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.

Repeaters 18, 19 are designed to align with the output impedance threshold elements 11, 12 and resistances of the loads connected to their outputs through the output terminals 24 and 25.

Structurally, the device is made in the form of two functional units 26 and 27 (see figure 1). The first node 26 includes Multifibre is R 3, the capacitor 5, the controller 7 sensitivity, the detector 9, the threshold element 11, the repeater 18, series-connected, and the sensor 1 liquid level and the differentiator 13 with their respective electrical connections. The second node 27 includes the rest of the device map not included in the functional node 26. Thus the output of the first differentiator 13 and the connection point of the S-input of the first flip-flop 15, the R-input of the second trigger 16 are respectively pins 28 and 29 programming the functionality of the device. When the pin 28, which is part of the node 26 and the output 29, which is part of the node 27, shorted, the device is transformed into the system of control and regulation of liquid level. For operation of the device are its first and second outputs, which are respectively the first and second output terminals 22 and 23 belonging to the functional node 27. If no conclusions 28, 29 device is transformed into a set of switches control the liquid level, which consists of two detectors, one of which is signaling the upper liquid level in the form of a functional node 26 of the device, the second indicator, the lower the level of liquid in the form of a functional node 27 of the device. In this case, the third and fourth outputs of the device, the which are the output terminals 24 and 25, respectively, belonging to the first and second nodes 26 and 27 of the device, respectively. Moreover, the programming functionality of the device is performed by a simple method without changing its structure by closing or opening the conclusions 28 and 29 at the wiring on the object of operation.

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

Above it was noted that structurally, the proposed device consists of two functional units 26 and 27. Each of them performed, for example, in the cylindrical housing. On one end of the body, which is the working end of the corresponding function node set signal and common electrodes conductive liquid level sensor 1 or 2. 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 consisting of two functional units 26, 27, using two return connectors (figure 2, figure 3, figure 4, not shown) with contact type socket mounted on the object ek is operating. Using these connectors is the articulation of functional units 26, 27 of the device. On their rear sides of mounting the electrical circuits of the voltage supply, installation wires to connect to the outputs of the device loads and conclusions 28, 29 programming the functionality of the device. In figure 1 the program pins 28, 29 shown in open form.

In the case of lead connections 28, 29, for example by the method of soldering the response parts of the connector device, it functions as a system of control and regulation of liquid level in two different modes: level control, filling and emptying of liquid or mode control of liquid level and maintain it at a fixed height. This uses the first and second outputs of the device, and the third and fourth outputs are not involved and used as a control conclusions testing of conductive sensors 1, 2 liquid level, functional units 26 and 27, or for reproduction of signals from the outputs of the repeaters 18, 19 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 windings management on his off or turn on, make use of, respectively, the first and second outputs of the mouth of the STS. In the case of control of a pumping unit using electromagnetic relays with one control winding, is used to control only the second output device, which enables or disables the electromagnetic relay.

When open the conclusions 28, 29 device is transformed into a set of independent functional units 26, 27 with the functionality of the switches, respectively, the upper and lower liquid levels. If necessary to control the level of liquid media can be used simultaneously both alarm upper and lower levels, or one of them. This may be only the third or fourth outputs, and first and second outputs of the device is unaffected.

Consider the operation of the device in three different modes: filling and emptying of the tank, maintaining the liquid level at its fixed altitude and mode of fluid level indicators.

The operation of the device in the mode of filling and emptying of the tank.

Operation in this mode is vertical or horizontal mounting of the device in open and closed tanks (see figure 2) with walls made of conductive or dielectric material. Thus the nodes 26 and 27 are mounted on the object of operation in a vertical position. PR is what the node 26 is installed at the top, and the node 27 at the bottom of the tank 30. Conclusions 28, 29 thus closed between.

When applying at time t0on the device with a power supply unit 17 is the charge of the capacitor through the transition emitter-base of transistor n-p-n type (see Fig 1). When this transistor unit 17 opens, and through its transition collector-emitter voltage is fed to the R-input of the trigger 15 and the S-input of the trigger 16 pulse voltage U1 with logical level "0" (see figure 5). As a result, the outputs of the triggers 15 and 16 and respectively on the first and second output terminals 22 and 23 are set voltage U7 and U8 levels logic "0" and logic "1" respectively. After the end of charge of the capacitor unit 17 of its transistor is closed and further on the operation of the circuit device is not affected. Then on the collector of the transistor unit 17, on the R-input of the trigger 15, the S-input of the trigger 16 and the output of the differentiator 14 through resistor sets the voltage U1 with logical level "1". At the same time through the resistor differentiator 13 to S-input and R input, respectively, of the trigger 15, 16 sets the voltage U4 with logical level "1". However, the multivibrators 3 and 4 go into the mode of generation of electrical oscillations, as in the initial state in the tank 30 is controlled fluid 31 is absent, and the electrodes of the sensors 1, 2 are drained from the being. 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 is converted 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 U2 and U3, respectively, with levels logic "1" and logical "0". Along with this, after the filing of the device supply voltage, the led unit 20 of the display is not lit, and the led unit 21 of the display flashes. With the release of the trigger 16 through the output terminal 23 is energized U8 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 30 by the liquid 31, and controlled by the liquid level rises in the tank up.

At time t1is flushing fluid 31 of the sensor electrode 2. As a result, after the electrodes 2 and controlled liquid 31 to the input of the detector 10 is connected to the common ground circuit device. Then the output is of ejector 10 sets the voltage level of the logical "0", under which the threshold element 12 is switched in such a steady state in which its output, the input and output of the repeater 19 are set voltage, respectively U3 and U6 with logical level "1". But at the time of the positive voltage U3 is applied to the input of differentiator 14, the output of the last generation pulse voltage U1 with logical level "0" is not happening, as the differentiator 14 generates the pulse only when the input negative differential voltage U3 from the output of the threshold element 12. Therefore, switching of the trigger 15, 16 at the time t1does not occur, and the process of filling the tank with liquid.

At time t2the sensor electrodes 1 wash liquid 31. As a result, after its electrodes and controlled fluid 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 output, the input and output of the repeater 18 are set voltage, respectively U2 and U5 levels logic "0". In the moment of the negative differential voltage U2 at the output of the threshold element 11 (see figure 5)supplied to haddifficulty 13, the output of the latter is the formation of the pulse voltage U4 with logical level "0". As a result, the S-input and R input switches triggers 15 and 16, respectively. Then their outputs are set to the voltage U7 and U8 levels logic "1" and logic "0" respectively. In this case the led indicator 21 is extinguished, and the led indicator 20 is exposed. At this moment, the output of the trigger 15 through the output terminal 22 is energized U7 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 30 at time t2ceases. Then the scheme of arrangement and position of the level of the controlled fluid 31 can be in this state until, until the start of its consumption.

After a time t2for example, begins the flow of the controlled fluid 31. After a certain period of time at time t3is the drainage of the signal electrodes 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 input to the threshold element 11 of the pulse voltage, under which the output of the detector 9 and the input of the threshold element 11 installed the voltage level of the logic "1". The threshold element 11 returns to its original state in which its output is the voltage U2 with logical level "1". But under the action of a positive differential voltage U2 applied from the output of the threshold element 11 to the input of the differentiator 13, forming at its output pulse voltage U4 with logical level "0" is not happening, as the differentiator 13 generates the pulse only negative differential input voltage U2. Therefore, switching of the trigger 15, 16 also does not occur, and the process fluid flow 31 continues.

After a certain period of time at time t4is the drainage of the signal electrodes of the sensor 2. The result is a disabling input of the detector 10 from the common ground circuit device and to the input of the detector is fed from the output of the multivibrator 4 pulse voltage, under which the output from the detector 10 and the input of the threshold element 12 is set to the voltage level of the logical "1". The threshold element 12 is switched to another stable state in which its output is the voltage U3 with logical level "0". At the time of the negative voltage U3 at the output of the differentiator 14 is formed pulse voltage U1 with logical level "0", which triggers 15, 16 return to the original state is, when their outputs are set to the voltage U7 and U8 levels logic "0" and logic "1" respectively. In this case the led indicator 20 is extinguished, and the led indicator 21 is exposed. At this point, with the trigger 16 through the output terminal 23 is energized U8 with logical level "1" to the control winding (figure 1 it is not shown) the solenoid actuator of the pump installation. On this first cycle control and regulation of liquid level ends and begins the second cycle of operation of the device since the time t4according 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, since t4and before time t8.

The operation of the device in the mode of maintaining the liquid level at its fixed height.

This mode can be used vertical or horizontal mounting of the device in open and closed tanks (see figure 3, figure 4), the wall, which can be made of conductive or dielectric material. With the pins 28, 29 are closed.

The device can be used in this mode in terms of the unlimited space of the mounting area (see figure 3), when the object of the operation are the tanks of large dimensions and mounting of the nodes 26 and 2 the device is on the opposite walls of the tank in case of horizontal mounting device or near the opposite walls of the tank in a vertical way its installation.

If the instrument is in this mode when space is limited mounting area (see figure 4), when exploited can be reservoirs for both large and small dimensions, installation of nodes 26 and 27 on one wall of the tank close to each other horizontal or vertical ways of their installation.

Operation in this mode is identical to the mode of filling and emptying of the tank and is described by the diagrams shown in figure 5. The difference between this mode from the above is that in this case we use a more narrow range level control of the controlled fluid, which is provided by the offset in the vertical plane of the axes of symmetry of the signal electrodes of the sensors 1 and 2 respectively of the nodes 26 and 27 in a horizontal way their mounting ends of the signal electrodes of the sensors 1 and 2 nodes 26 and 27 in a vertical way of their installation (see figure 3, figure 4).

Moreover, the magnitude of this bias is many times less than the fixed level of the controlled fluid taken for its nominal value, i.e. the nominal value of the height of the controlled liquid level, which is keeping it with a given accuracy. In turn, the value of the specified offset is determined by the accuracy of the level controlled by the fluid. The smaller the offset, the more accuracy is maintaining a liquid level on its fixed height.

If the value specified offset is equal to ΔL, the accuracy of controlling the liquid level on its fixed height will be ±ΔL/2 when setting the nominal value of the liquid level on its fixed height L in the middle of the displacement ΔL. For example, if the nominal specified height level of the controlled fluid L=2 m and the displacement ΔL=5 cm accuracy regulation (maintaining) the liquid level at this height is 2.5%. Selecting this mode, the value of the specified offset, you can set the desired value of the control accuracy of the liquid level on the selected fixed height regulation.

The operation of the device in the mode of fluid level indicators.

In this mode, the conclusions 28, 29 are in open condition. The nodes 26 and 27 of the device function as signaling the upper and lower fluid levels, respectively. In this case, they allow for vertical and horizontal mounting on the object of exploitation. Using the third and fourth outputs of the device. Moreover, the first and second outputs of the device in this case is not involved.

The node 26 of the device with the functionality of a level switch ve is knego liquid level is described by the diagrams U2 and U5, shown in figure 5. The host device 27 with the functionality of the lower level switch liquid level is described by the diagrams U3 and U6, shown in figure 5.

In all the above modes of operation of the device in case of unlimited space of the mounting area of the device also provides a combined method of mounting on the object operation, when the installation site 26 (27) is the vertical method, and installation of site 27 (26) - horizontal method.

Thus, the proposed device in comparison with analogues has several advantages: the system of control and regulation of liquid level in the form of two compact detectors upper and lower fluid levels, horizontal and combined methods of installation, the ability to control and maintain the liquid level at a given fixed height and with precision regulation, 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 dimensions, the material and is ussite 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 first liquid level sensor, the first and second triggers, the 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 a second liquid level sensor, the second detector, the first and second differentiator, the inputs of which are connected with the direct and inverse outputs of the respective threshold element whose inputs are connected to the outputs of the respective detectors and the inputs of the respective repeaters, the setting unit in the initial state, the output of which is connected with the output of the second differentiator, R-input of the first flip-flop whose output is the first output device, the S-input of the second trigger, R-input of which is connected to the S-input of the first flip-flop and its output is the second output, the first and second display units, the inputs of which are connected to the outputs of the respective triggers the second flip-flop, the first and second fluid-level sensor made the Konda is effective, each of which contains two conductive electrodes, one of which is a signal electrode, and the other common electrode is made longer than the signal electrode and connected to a common "ground" of the device, 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 to the signal electrodes of the respective sensors, liquid level, and the outputs of the first and second repeaters are respectively the third and fourth outputs of the device, which is structurally designed in the form of two functional units, the first of which includes series-connected first multivibrator, condenser, control sensitivity, the detector, the threshold element, the repeater, and the first liquid level sensor and a differentiator with relevant links, a second node, the rest of the circuit device, and the output of the first differentiator and the connection point of the S-input and R input respectively of the first and second triggers are the conclusions of the programming functionality of the device, when the circuit in which the device of transformer what is in the system of control and regulation of liquid level using its first and second outputs, and when the break - in set of detectors control the upper and lower fluid levels, which are respectively the first and second functional units of the device, using the third and fourth outputs of the device.



 

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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.

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Discrete sensor // 2047106
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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

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

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