(57) Abstract:The inventive discrete sensor provides speed measuring pipe, at each step with a pressure sensor, the input of which is connected to the input of the processing unit, the plate of magnetically sensitive material and the magnets, each of which is arranged to be placed under a corresponding pressure sensor or the above steps, and each plate of magnetically sensitive material is sensitive element of the corresponding pressure sensor. 3 Il. The invention relates to the instrument and can be used to measure with precision fluid levels of various types using a uniform sensor information.Known probe, float, capacitive, inductive, resistive and thermoelectric sensors (Morehow N. A. Automatically measuring volume, level and porosity of the materials. M. Energoatomizdat, 1990, S. 120).Closest to the invention is a discrete sensor containing the measuring pipe of stepped form with placed it in the water level, the outputs of the sensors are connected to the corresponding inputs of the processing unit. To adjust the sensitivity on the sensing element of the sensor information from the inner side secured a sealed tank filled with substance, the weight of which is less than the specific gravity of the liquid. Additionally inside the sealed container is a heating element.The disadvantages of this sensor is limited functionality due to the fact that this sensor can measure levels of liquids withewhereethe weight of the reference liquid; specific gravity of the liquid, as used uniform pressure sensor will produce a signal of the logic unit when it reaches a certain levelethe reference liquid withe.The task of the invention is the extension class of the measured liquids of any class by measuring the level of liquids witheorewhen using a standard pressure sensors without changing the level measurement limits.For this purpose, a discrete sensor that contains the speed of the measuring tube, at each step which has datchery plate of magnetically sensitive material and the magnets, each of which is arranged to be placed under a corresponding pressure sensor or the above steps, and each plate of magnetically sensitive material is sensitive element of the corresponding pressure sensor.The invention consists in that when measuring liquid level <>eabove the upper level of the measuring tube to create aeupon reaching the liquid of any class levele(distance between steps).Distinctive features of the proposed invention are:
introduction plates from magnetocrystalline ferromagnetic material located on the sensing element of the pressure sensor;
the introduction of magnets;
the execution of the magnet with the possibility of installation under the appropriate pressure sensor or located underneath the stage.In Fig. 1 shows a diagram of the sensor with the location of the magnets under pressure sensors; Fig. 2 is the same, with the arrangement of the magnets above the pressure sensors of Fig. 3 the scheme of fixing the magnets in an extra plane having a speed-increasing form.Discrete sensor contains izmeritelnaya the fluid being measured, N sensors 2 information block 3 information processing, plate 4 made of ferromagnetic material and the magnets 5. When the measuring pipe 1 has a step of increasing the shape, the height of each step is proportional to the accuracy of the level measurement, the sensor 2.i (i 1-N) information is located on the bottom surface of the i-th stage of the pipe 1 below the top surface of the i-th stage of the pipe 1, the output of the sensor 2 information connected with the respective input unit 3 of the information processing, on the upper surface of the sensing element of the sensor 2. i information are in place (e.g., adhesive) plate 4.i magnetosensitive (ferromagnetic) material. Under the pressure sensor 2.i installed the magnet (magnet) 5.i.Discrete transmitter depicted in Fig. 2, differs from the discrete sensor is depicted in Fig. 1, so that the magnet 5.i installed on top of the pressure sensor 2.i above the level of the pipe 1.If the sensor 2 pressure has an electric output signal which is equal to a logical unit when the leveleliquids with a specific gravitye(sensor 2 pressure relay of the type, in unit 3, you can use digital to analogue Converter (DAC).To the output of block 3 data processing (Fig. 1, 2) can be connected to the node display (voltmeter or ammeter, Fig. 1, 2 site display not illustrated), calibrated in units of length.Instead of magnets, 5.1, 5.N you can use one long (linear) magnet, located at the same distance of the plates 4. The length of the magnet 5 in this case should not be less than straight-line distance between the first and N-th plate 4. Place the magnet 5 is inclined at a certain distance l from the straight line connecting the first and N-th plate. The distance l depends on the technical implementation of the magnet 5 (electromagnet), including power from its power source.Discrete sensor operates as follows.The sensors 2. i (i 1-N) is selected so as to output the logical unit after the complete filling of the i-th stage of the measuring tube 1 heighteliquid with specific gravitye.Suppose that the level of the liquid is changed and at some point of time will fill the i-th stage of the pipe 1. This will trigger the sensor 2.the first information output signal is rebrushed evidence of triggered sensors (2.1, 2.2, 2.i information in the analog signal, which is input to node indication, the indication which is proportional to the height level of the liquid.For variation sensitive standard sensors 2 information for level measurement of liquids with different specific gravities using magnetic forces. If <ethe magnets 5 have a bottom sensor 2 pressure at a certain distance to create a force of attraction between the magnet 5 and the plate 4.Pm(e)eS RPLwhereethe distance between the rungs of the pipe 1 (specified accuracy of the measurement); and S the area of the sensitive element of the pressure sensor; the specific weight of the fluid being measured;ethe weight of the reference (standard) fluid; PPLweight plates 4.If the magnet 5 is made in the form of an electromagnet, to adjust the strength of the Pmby variation of the power voltage at a given distance between the plate 4 and the magnet 5 and the specified number of turns of the magnet.If >ethen use a level gauge (Fig. 2) with the upper position of the magnet 5. In this case, the magnets 5 must create a force between them and the plates 4 Rm(eSe+ Pthe bones using a standard pressure sensors with the same range of level measurement;
it is easier to control the sensitivity of the standard pressure sensors by using the strength of the magnetic field;
provides contactless control sensitivity, which leads to the use of this sensor for the measurement of ultra-pure or explosive liquids. DISCRETE SENSOR containing speed measuring pipe, at each step with a pressure sensor, the output of which is connected to the input of the processing unit, characterized in that it introduced the plates of magnetically sensitive material and the magnets, each of which is arranged to be placed under a corresponding pressure sensor or the above steps, and each plate of magnetically sensitive material is sensitive element of the corresponding pressure sensor.
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.
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.
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.
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.
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
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.
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