CN210571134U - Combined type induction pressure transmitter circuit - Google Patents
Combined type induction pressure transmitter circuit Download PDFInfo
- Publication number
- CN210571134U CN210571134U CN201921511527.5U CN201921511527U CN210571134U CN 210571134 U CN210571134 U CN 210571134U CN 201921511527 U CN201921511527 U CN 201921511527U CN 210571134 U CN210571134 U CN 210571134U
- Authority
- CN
- China
- Prior art keywords
- resistor
- pin
- amplifier
- capacitor
- transistor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 230000006698 induction Effects 0.000 title claims abstract description 13
- 230000000087 stabilizing effect Effects 0.000 claims abstract description 25
- 238000006243 chemical reaction Methods 0.000 claims abstract description 9
- 238000001914 filtration Methods 0.000 claims abstract description 8
- 238000005259 measurement Methods 0.000 claims abstract description 7
- 239000003990 capacitor Substances 0.000 claims description 45
- 230000001939 inductive effect Effects 0.000 claims description 11
- 230000003321 amplification Effects 0.000 claims description 10
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 10
- 230000007935 neutral effect Effects 0.000 claims description 3
- 230000006641 stabilisation Effects 0.000 claims 1
- 238000011105 stabilization Methods 0.000 claims 1
- 238000009434 installation Methods 0.000 abstract 1
- 238000012423 maintenance Methods 0.000 abstract 1
- 230000004044 response Effects 0.000 description 6
- 238000001514 detection method Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 238000009530 blood pressure measurement Methods 0.000 description 1
- 238000003889 chemical engineering Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000004886 process control Methods 0.000 description 1
Images
Landscapes
- Measuring Fluid Pressure (AREA)
Abstract
The utility model discloses a combined type induction pressure transmitter circuit, relating to the field of instrument measurement and control systems; the combined type induction pressure transmitter circuit comprises a voltage stabilizing and filtering module, a signal amplifying module, an induction measuring module and a conversion output module; the utility model can sense the pressure type intelligently, thereby measuring the pressure accurately, and having high stability and high accuracy; just the utility model discloses it is simple and convenient in the aspect of installation, debugging and maintenance, reduced artifical adjust time, improve work efficiency.
Description
Technical Field
The utility model relates to an instrument pressure measurement field is a modular response pressure transmitter circuit particularly.
Background
With the rapid development of the instrument industry in China, the pressure transmitter is widely applied to industrial process detection and control, such as process control and detection systems in industries of petroleum, chemical engineering, metallurgy, electric power, light industry and the like, and is the core of field detection;
when the pressure transmitter acts the pressure signal of the medium on the sensor, the pressure sensor converts the pressure signal into an electric signal;
however, in the current industrial situation, the types of pressure are very many, and can be divided into three types of gas pressure, liquid pressure and temperature pressure, and how to make the pressure sensor accurately sense the type of pressure and quickly detect the pressure when working is a challenge in the field of modern instruments.
SUMMERY OF THE UTILITY MODEL
To the problem in the correlation technique, the utility model provides a to overcome the above-mentioned technical problem that current correlation technique exists.
The technical scheme of the utility model is realized like this:
a combined type induction pressure transmitter circuit comprises a voltage stabilizing and filtering module, a signal amplifying module, an induction measuring module and a conversion output module.
Further, the voltage stabilizing filter module comprises a power supply, a fuse FU1, a fuse FU2, a transformer TR1, a bridge type voltage stabilizing diode BR1, a resistor R1, a resistor R2 and a capacitor C1; wherein the neutral line of said power supply is connected to one end of said fuse FU 2; the positive input end of the transformer TR1 is connected with the other end of the fuse FU1, the negative input end of the transformer TR1 is connected with the other end of the fuse FU2, the positive output end of the transformer TR1 is connected with the positive input end of the bridge type voltage stabilizing diode BR1, and the negative output end of the transformer TR1 is connected with the negative input end of the bridge type voltage stabilizing diode BR 1; the anode output end of the bridge type voltage stabilizing diode BR1 is connected with one end of the resistor R2, and the cathode output end of the bridge type voltage stabilizing diode BR1 is connected with one end of the resistor R1; one end of the capacitor C1 is connected with the other end of the resistor R2, and the other end of the capacitor C2 is connected with the other end of the resistor R1; the type of the transformer TR1 is TRAN2P 2S; the model of BR1 of the bridge type voltage stabilizing diode is B80C 1000.
Further, the signal amplification module comprises an amplifier U1, an amplifier U2, an amplifier U3, an amplifier U4, a triode Q1, a triode Q2, a triode Q3, a triode Q4, a resistor R3, a resistor R4, a resistor R5, a resistor R6, a resistor R7, a resistor R8 and a resistor R9; the pin 3 of the amplifier U1 is connected with one end of a capacitor C1, the pin 2 of the amplifier U1 is connected with the other end of the capacitor C1, the pin 8 of the amplifier U1 is connected with one end of a resistor R3, the pin 4 of the amplifier U1 is connected with one end of a resistor R4, and the pin 1 of the amplifier U1 is connected with the base of a triode Q1; the other end of the resistor R3 is connected with the collector of the triode Q1; the other end of the resistor R4 is connected with the emitter of the triode Q1; the pin 2 of the amplifier U2 is connected with the collector of a triode Q1, the pin 3 of the amplifier U2 is connected with one end of the resistor R6, the pin 4 of the amplifier U2 is connected with the other end of the resistor R6, and the pin 1 of the amplifier U2 is connected with the base of the triode Q4; pin 2 of the amplifier U3 is connected to one end of the resistor R5, pin 4 of the amplifier U3 is connected to the other end of the resistor R5, pin 1 of the amplifier U3 is connected to the base of the transistor Q3, pin 3 of the amplifier U3 is connected to the base of the transistor Q2, and pin 8 of the amplifier U3 is connected to the emitter of the transistor Q2; the collector of the triode Q2 is connected with the other end of the resistor R3; one end of the resistor R7 is connected with one end of the resistor R5, and the other end of the resistor R7 is connected with one end of the resistor R6; pin 2 of the amplifier U4 is connected to the emitter of the transistor Q4, pin 3 of the amplifier U4 is connected to the emitter of the transistor Q3, pin 4 of the amplifier U4 is connected to one end of the resistor R8, pin 1 of the amplifier U4 is connected to the collector of the transistor Q5, and pin 8 of the amplifier U4 is connected to one end of the resistor R9; the other end of the R8 is connected with the ground wire of a power supply; the model of the amplifier U1 is LM258, the models of the amplifier U2, the amplifier U3 and the amplifier U4 are LM124, the model of the triode Q1 is NPN, and the models of the triode Q2, the triode Q3 and the triode Q4 are PNP.
Further, the induction measuring module comprises a temperature sensor M1, a pressure sensor M2, an air pressure sensor M3, a light emitting diode D1, a light emitting diode D2 and a light emitting diode D3; wherein the anode of the light emitting diode D1 is connected with pin 8 of an amplifier U3, and the cathode of the light emitting diode D1 is connected with pin 5 of the pressure sensor; the No. 6 pin of the pressure sensor is connected with the collector of a triode Q3, and the No. 3 pin of the pressure sensor is connected with the other end of a resistor R9; the anode of the light emitting diode D3 is connected with the No. 1 pin of the temperature sensor M1, and the cathode of the light emitting diode D3 is connected with the No. 3 pin of the pressure sensor M2; the pin 3 of the temperature sensor M1 is connected with the pin 3 of a chip V1, the pin 4 of the temperature sensor M1 is connected with the pin 5 of the chip V1, the pin 5 of the temperature sensor M1 is connected with the pin 16 of the chip V1, and the pin 6 of the temperature sensor M1 is connected with the pin 6 of the chip V1; the anode of the light emitting diode D2 is connected with the No. 8 pin of the amplifier U2, and the cathode of the light emitting diode D2 is connected with the No. 1 pin of the air pressure sensor M3; the pin 2 of the barometric sensor M3 is connected with the collector of a triode Q4, and the pin 3 of the barometric sensor M3 is connected with one end of a resistor R10; the LED D1, LED D2 with LED D3 'S model is the LED, temperature sensor M1' S model is MPX4250, pressure sensor M2 'S model is BMP180, baroceptor M3' S model is DS18S 20.
Further, the conversion output module comprises a chip V1, a capacitor C2, a capacitor C3, a capacitor C4, a resistor R10, a resistor R11, a resistor R12, a resistor R13, a resistor R14 and an amplifier U5; one end of the capacitor C2 is connected with the No. 19 pin of the chip V1, and the other end of the capacitor C2 is connected with one end of the resistor R11; the other end of the resistor R11 is connected with a No. 17 pin of the chip V1; one end of the resistor R14 is connected with the No. 18 pin of the chip V1, and the other end of the resistor R14 is connected with the No. 1 pin of the amplifier U5; one end of the resistor R10 is connected with the ground wire of a power supply, and the other end of the resistor R10 is connected with one end of the capacitor C3; one end of the resistor R12 is connected with the other end of the capacitor C3, and the other end of the resistor R12 is connected with the No. 1 pin of the chip V1; the No. 3 pin of the amplifier U5 is connected with one end of the capacitor C4; the No. 2 pin of the amplifier U5 is connected with the other end of the capacitor C4; one end of the resistor R13 is connected with the other end of the resistor R10, and one end of the resistor R13 is connected with the other end of the capacitor C4; the model of the chip V1 is DS3234, and the model of the amplifier U5 is LM 258.
The utility model has the advantages that: the type of the medium pressure signal can be accurately judged according to the air pressure sensor, the temperature sensor and the hydraulic sensor in the circuit, so that the pressure transmitter can transmit the pressure signal to the control end more quickly and accurately; the transmission time is reduced, the working efficiency is improved, and the service lives of the pressure transmitter and the equipment are prolonged.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a circuit of a combined inductive pressure transmitter according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments; the embodiments of the present invention, all other embodiments obtained by those skilled in the art, belong to the protection scope of the present invention.
According to the utility model discloses an embodiment provides a modular response pressure transmitter circuit.
As shown in fig. 1, according to the utility model discloses a modular response pressure transmitter circuit, including steady voltage filtering module, signal amplification module, response measurement module and conversion output module.
In one embodiment, the voltage stabilizing filter module comprises a power supply, a fuse FU1, a fuse FU2, a transformer TR1, a bridge type voltage stabilizing diode BR1, a resistor R1, a resistor R2, and a capacitor C1; wherein the neutral line of said power supply is connected to one end of said fuse FU 2; the positive input end of the transformer TR1 is connected with the other end of the fuse FU1, the negative input end of the transformer TR1 is connected with the other end of the fuse FU2, the positive output end of the transformer TR1 is connected with the positive input end of the bridge type voltage stabilizing diode BR1, and the negative output end of the transformer TR1 is connected with the negative input end of the bridge type voltage stabilizing diode BR 1; the anode output end of the bridge type voltage stabilizing diode BR1 is connected with one end of the resistor R2, and the cathode output end of the bridge type voltage stabilizing diode BR1 is connected with one end of the resistor R1; one end of the capacitor C1 is connected with the other end of the resistor R2, and the other end of the capacitor C2 is connected with the other end of the resistor R1; the type of the transformer TR1 is TRAN2P 2S; the model of BR1 of the bridge type voltage stabilizing diode is B80C 1000; the voltage stabilizing and filtering module is used for stabilizing input voltage and reducing interference of power supply signals to a circuit.
In one embodiment, the signal amplification module includes an amplifier U1, an amplifier U2, an amplifier U3, an amplifier U4, a transistor Q1, a transistor Q2, a transistor Q3, a transistor Q4, a resistor R3, a resistor R4, a resistor R5, a resistor R6, a resistor R7, a resistor R8, and a resistor R9; the pin 3 of the amplifier U1 is connected with one end of a capacitor C1, the pin 2 of the amplifier U1 is connected with the other end of the capacitor C1, the pin 8 of the amplifier U1 is connected with one end of a resistor R3, the pin 4 of the amplifier U1 is connected with one end of a resistor R4, and the pin 1 of the amplifier U1 is connected with the base of a triode Q1; the other end of the resistor R3 is connected with the collector of the triode Q1; the other end of the resistor R4 is connected with the emitter of the triode Q1; the pin 2 of the amplifier U2 is connected with the collector of a triode Q1, the pin 3 of the amplifier U2 is connected with one end of the resistor R6, the pin 4 of the amplifier U2 is connected with the other end of the resistor R6, and the pin 1 of the amplifier U2 is connected with the base of the triode Q4; pin 2 of the amplifier U3 is connected to one end of the resistor R5, pin 4 of the amplifier U3 is connected to the other end of the resistor R5, pin 1 of the amplifier U3 is connected to the base of the transistor Q3, pin 3 of the amplifier U3 is connected to the base of the transistor Q2, and pin 8 of the amplifier U3 is connected to the emitter of the transistor Q2; the collector of the triode Q2 is connected with the other end of the resistor R3; one end of the resistor R7 is connected with one end of the resistor R5, and the other end of the resistor R7 is connected with one end of the resistor R6; pin 2 of the amplifier U4 is connected to the emitter of the transistor Q4, pin 3 of the amplifier U4 is connected to the emitter of the transistor Q3, pin 4 of the amplifier U4 is connected to one end of the resistor R8, pin 1 of the amplifier U4 is connected to the collector of the transistor Q5, and pin 8 of the amplifier U4 is connected to one end of the resistor R9; the other end of the R8 is connected with the ground wire of a power supply; the model of the amplifier U1 is LM258, the models of the amplifier U2, the amplifier U3 and the amplifier U4 are LM124, the model of the triode Q1 is NPN, and the models of the triode Q2, the triode Q3 and the triode Q4 are PNP; the signal amplification module is used for amplifying the voltage signal value output from the voltage stabilizing and filtering module to a voltage signal value required by the detection of a sensor.
In one embodiment, the sensing measurement module comprises a temperature sensor M1, a pressure sensor M2, an air pressure sensor M3, a light emitting diode D1, a light emitting diode D2, a light emitting diode D3; wherein the anode of the light emitting diode D1 is connected with pin 8 of an amplifier U3, and the cathode of the light emitting diode D1 is connected with pin 5 of the pressure sensor; the No. 6 pin of the pressure sensor is connected with the collector of a triode Q3, and the No. 3 pin of the pressure sensor is connected with the other end of a resistor R9; the anode of the light emitting diode D3 is connected with the No. 1 pin of the temperature sensor M1, and the cathode of the light emitting diode D3 is connected with the No. 3 pin of the pressure sensor M2; the pin 3 of the temperature sensor M1 is connected with the pin 3 of a chip V1, the pin 4 of the temperature sensor M1 is connected with the pin 5 of the chip V1, the pin 5 of the temperature sensor M1 is connected with the pin 16 of the chip V1, and the pin 6 of the temperature sensor M1 is connected with the pin 6 of the chip V1; the anode of the light emitting diode D2 is connected with the No. 8 pin of the amplifier U2, and the cathode of the light emitting diode D2 is connected with the No. 1 pin of the air pressure sensor M3; the pin 2 of the barometric sensor M3 is connected with the collector of a triode Q4, and the pin 3 of the barometric sensor M3 is connected with one end of a resistor R10; the LED D1, the LED D2 and the LED D3 are all LEDs, the temperature sensor M1 is MPX4250, the pressure sensor M2 is BMP180, and the air pressure sensor M3 is DS18S 20; the induction detection module is used for judging the pressure type and measuring the pressure magnitude of the voltage signal value received by the sensor.
In one embodiment, the conversion output module comprises a chip V1, a capacitor C2, a capacitor C3, a capacitor C4, a resistor R10, a resistor R11, a resistor R12, a resistor R13, a resistor R14 and an amplifier U5; one end of the capacitor C2 is connected with the No. 19 pin of the chip V1, and the other end of the capacitor C2 is connected with one end of the resistor R11; the other end of the resistor R11 is connected with a No. 17 pin of the chip V1; one end of the resistor R14 is connected with the No. 18 pin of the chip V1, and the other end of the resistor R14 is connected with the No. 1 pin of the amplifier U5; one end of the resistor R10 is connected with the ground wire of a power supply, and the other end of the resistor R10 is connected with one end of the capacitor C3; one end of the resistor R12 is connected with the other end of the capacitor C3, and the other end of the resistor R12 is connected with the No. 1 pin of the chip V1; the No. 3 pin of the amplifier U5 is connected with one end of the capacitor C4; the No. 2 pin of the amplifier U5 is connected with the other end of the capacitor C4; one end of the resistor R13 is connected with the other end of the resistor R10, and one end of the resistor R13 is connected with the other end of the capacitor C4; the model of the chip V1 is DS3234, and the model of the amplifier U5 is LM 258; the conversion output module is used for converting the signal value transmitted by the sensor into an output voltage value, and the output voltage value is transmitted in the control system through the output circuit.
The working principle is as follows: 220V voltage input by the anode of the power supply is converted into voltage required by the circuit through a transformer TR1 and a bridge type voltage-stabilizing diode BR1, wherein the voltage is 220V; the input signal value is amplified in signal value amplitude through a signal amplification module consisting of an amplifier U1, an amplifier U2, an amplifier U3, an amplifier U4, a triode Q1, a triode Q2, a triode Q3, a triode Q4, a resistor R3, a resistor R4, a resistor R5, a resistor R6, a resistor R7, a resistor R8 and a resistor R9, the signal is judged and measured through a combined sensing measurement circuit consisting of an LED diode and a sensor, and finally the measured signal output value is transmitted to a control system through the conversion output of a chip U1.
To sum up, with the help of the above technical scheme of the utility model, through designing a modular response pressure transmitter circuit, through the sensor that increases the combination formula response in the circuit, solve the problem of the type and the size of unable accurate judgement pressure in the above-mentioned technique, reduced transmission time, increased work efficiency, prolonged the life of equipment.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. A combined inductive pressure transmitter circuit, comprising: the device comprises a voltage stabilizing and filtering module, a signal amplifying module, an induction measuring module and a conversion output module; the positive output signal end of the voltage-stabilizing filtering module is connected with the positive input signal end of the signal amplification module, and the negative output signal end of the voltage-stabilizing filtering module is connected with the negative input signal end of the signal amplification module; the positive output signal end of the signal amplification module is connected with the positive input signal end of the induction measurement module, and the negative output signal end of the signal amplification module is connected with the negative input signal end of the induction measurement module; and finally, the output voltage signal is converted and stably output through the conversion output module connected with the induction measuring module.
2. The modular inductive pressure transmitter circuit of claim 1 wherein said voltage stabilization filter module comprises a power supply, fuse FU1, fuse FU2, transformer TR1, bridge zener diode BR1, resistor R1, resistor R2, capacitor C1; wherein the live wire of the power supply is connected with one end of the fuse FU1, and the neutral wire of the power supply is connected with one end of the fuse FU 2; the positive input end of the transformer TR1 is connected with the other end of the fuse FU1, the negative input end of the transformer TR1 is connected with the other end of the fuse FU2, the positive output end of the transformer TR1 is connected with the positive input end of the bridge type voltage stabilizing diode BR1, and the negative output end of the transformer TR1 is connected with the negative input end of the bridge type voltage stabilizing diode BR 1; the anode output end of the bridge type voltage stabilizing diode BR1 is connected with one end of the resistor R2, and the cathode output end of the bridge type voltage stabilizing diode BR1 is connected with one end of the resistor R1; one end of the capacitor C1 is connected to the other end of the resistor R2, and the other end of the capacitor C2 is connected to the other end of the resistor R1.
3. The combined inductive pressure transmitter circuit of claim 2 wherein said transformer TR1 is of the type TRAN2P 2S; the model of BR1 of the bridge type voltage stabilizing diode is B80C 1000.
4. The combined inductive pressure transmitter circuit of claim 1, wherein the signal amplification module comprises an amplifier U1, an amplifier U2, an amplifier U3, an amplifier U4, a transistor Q1, a transistor Q2, a transistor Q3, a transistor Q4, a resistor R3, a resistor R4, a resistor R5, a resistor R6, a resistor R7, a resistor R8, a resistor R9; the pin 3 of the amplifier U1 is connected with one end of a capacitor C1, the pin 2 of the amplifier U1 is connected with the other end of the capacitor C1, the pin 8 of the amplifier U1 is connected with one end of a resistor R3, the pin 4 of the amplifier U1 is connected with one end of a resistor R4, and the pin 1 of the amplifier U1 is connected with the base of a triode Q1; the other end of the resistor R3 is connected with the collector of the triode Q1; the other end of the resistor R4 is connected with the emitter of the triode Q1; the pin 2 of the amplifier U2 is connected with the collector of a triode Q1, the pin 3 of the amplifier U2 is connected with one end of the resistor R6, the pin 4 of the amplifier U2 is connected with the other end of the resistor R6, and the pin 1 of the amplifier U2 is connected with the base of the triode Q4; pin 2 of the amplifier U3 is connected to one end of the resistor R5, pin 4 of the amplifier U3 is connected to the other end of the resistor R5, pin 1 of the amplifier U3 is connected to the base of the transistor Q3, pin 3 of the amplifier U3 is connected to the base of the transistor Q2, and pin 8 of the amplifier U3 is connected to the emitter of the transistor Q2; the collector of the triode Q2 is connected with the other end of the resistor R3; one end of the resistor R7 is connected with one end of the resistor R5, and the other end of the resistor R7 is connected with one end of the resistor R6; pin 2 of the amplifier U4 is connected to the emitter of the transistor Q4, pin 3 of the amplifier U4 is connected to the emitter of the transistor Q3, pin 4 of the amplifier U4 is connected to one end of the resistor R8, pin 1 of the amplifier U4 is connected to the collector of the transistor Q5, and pin 8 of the amplifier U4 is connected to one end of the resistor R9; the other end of the R8 is connected with the ground wire of the power supply.
5. The combined inductive pressure transmitter circuit of claim 4, wherein said amplifier U1 is of type LM258, said amplifier U2, said amplifier U3 and said amplifier U4 are of type LM124, said transistor Q1 is of type NPN, and said transistor Q2, said transistor Q3 and said transistor Q4 are of type PNP.
6. The combined inductive pressure transmitter circuit of claim 1 wherein said inductive measurement module comprises a temperature sensor M1, a pressure sensor M2, a barometric pressure sensor M3, a light emitting diode D1, a light emitting diode D2, a light emitting diode D3; wherein the anode of the light emitting diode D1 is connected with pin 8 of an amplifier U3, and the cathode of the light emitting diode D1 is connected with pin 5 of the pressure sensor; the No. 6 pin of the pressure sensor is connected with the collector of a triode Q3, and the No. 3 pin of the pressure sensor is connected with the other end of a resistor R9; the anode of the light emitting diode D3 is connected with the No. 1 pin of the temperature sensor M1, and the cathode of the light emitting diode D3 is connected with the No. 3 pin of the pressure sensor M2; the pin 3 of the temperature sensor M1 is connected with the pin 3 of a chip V1, the pin 4 of the temperature sensor M1 is connected with the pin 5 of the chip V1, the pin 5 of the temperature sensor M1 is connected with the pin 16 of the chip V1, and the pin 6 of the temperature sensor M1 is connected with the pin 6 of the chip V1; the anode of the light emitting diode D2 is connected with the No. 8 pin of the amplifier U2, and the cathode of the light emitting diode D2 is connected with the No. 1 pin of the air pressure sensor M3; the pin 2 of the barometric sensor M3 is connected to the collector of the transistor Q4, and the pin 3 of the barometric sensor M3 is connected to one end of the resistor R10.
7. The combined inductive pressure transmitter circuit of claim 6, wherein the light emitting diode D1, the light emitting diode D2 and the light emitting diode D3 are all of LED type, the temperature sensor M1 is of MPX4250 type, the pressure sensor M2 is of BMP180 type, and the air pressure sensor M3 is of DS18S20 type.
8. The combined inductive pressure transmitter circuit of claim 1 wherein said switching output module comprises a chip V1, a capacitor C2, a capacitor C3, a capacitor C4, a resistor R10, a resistor R11, a resistor R12, a resistor R13, a resistor R14, an amplifier U5; one end of the capacitor C2 is connected with the No. 19 pin of the chip V1, and the other end of the capacitor C2 is connected with one end of the resistor R11; the other end of the resistor R11 is connected with a No. 17 pin of the chip V1; one end of the resistor R14 is connected with the No. 18 pin of the chip V1, and the other end of the resistor R14 is connected with the No. 1 pin of the amplifier U5; one end of the resistor R10 is connected with the ground wire of a power supply, and the other end of the resistor R10 is connected with one end of the capacitor C3; one end of the resistor R12 is connected with the other end of the capacitor C3, and the other end of the resistor R12 is connected with the No. 1 pin of the chip V1; the No. 3 pin of the amplifier U5 is connected with one end of the capacitor C4; the No. 2 pin of the amplifier U5 is connected with the other end of the capacitor C4; one end of the resistor R13 is connected to the other end of the resistor R10, and one end of the resistor R13 is connected to the other end of the capacitor C4.
9. The modular inductive pressure transmitter circuit of claim 8 wherein said chip V1 is model DS3234 and said amplifier U5 is model LM 258.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921511527.5U CN210571134U (en) | 2019-09-11 | 2019-09-11 | Combined type induction pressure transmitter circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921511527.5U CN210571134U (en) | 2019-09-11 | 2019-09-11 | Combined type induction pressure transmitter circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210571134U true CN210571134U (en) | 2020-05-19 |
Family
ID=70658595
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921511527.5U Expired - Fee Related CN210571134U (en) | 2019-09-11 | 2019-09-11 | Combined type induction pressure transmitter circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210571134U (en) |
-
2019
- 2019-09-11 CN CN201921511527.5U patent/CN210571134U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN207851026U (en) | Systematic gas monitoring system | |
| CN210571134U (en) | Combined type induction pressure transmitter circuit | |
| CN204390401U (en) | A kind of smog autoalarm | |
| CN110542788A (en) | composite current frequency sensor | |
| CN205318320U (en) | Novel computer overvoltage protection device | |
| CN111404531A (en) | Photoelectric sensor switch monitoring protection circuit and monitoring method | |
| CN209432183U (en) | A kind of detection circuit of built-in mining diving pump | |
| CN209014646U (en) | The current detection circuit and electric machine controller of direct measuring type Hall sensor | |
| JP3237722U (en) | High current drive system for servo valves in steam turbines | |
| CN207164976U (en) | A kind of alarm with ZigBee controlled in wireless | |
| CN206330702U (en) | A kind of pressure detection circuit | |
| CN107402053B (en) | Two-wire contact type electronic material level meter | |
| CN202486194U (en) | Current sensor based on Rogowski coil | |
| CN109085417A (en) | The current detection circuit and electric machine controller of direct measuring type Hall sensor | |
| CN204730975U (en) | Can the pressure unit of promotion signal conversion accuracy | |
| CN208223705U (en) | A kind of oil pressure sensor | |
| CN204301763U (en) | A kind of Multifunction sensor tester | |
| CN204730977U (en) | The pressure unit for electrical stability can be promoted | |
| CN203824563U (en) | Digital transmitter based on dissolved oxygen sensor | |
| CN207051229U (en) | A kind of hydrocarbon exploration device | |
| CN207399146U (en) | A kind of power amplifier module input detection instruction device | |
| CN218330417U (en) | Temperature compensation circuit of pressure transmitter | |
| CN105403262B (en) | Flow monitor | |
| CN202494720U (en) | Current detection circuit for soft starter | |
| CN213812709U (en) | High-precision mining pressure sensor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200519 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |