Pressure sensor detection circuit and corresponding pressure sensor detection device

Abstract

The utility model provides a pressure sensor detection circuit and a corresponding pressure sensor detection device, a voltage conversion module is connected with a pressure sensor, and the pressure sensor is used for outputting a test signal based on test pressure provided by a weight. The voltage conversion module is used for carrying out voltage conversion operation on the low-voltage test signal to generate a high-voltage test signal. The micro-control chip module receives the high-voltage test signal, and the micro-control chip module can detect and calculate the high-voltage test signal to generate a result signal and a display signal. The output module is used for transmitting the result signal to an external device, and the external device can read the pressure value of the test pressure based on the result signal and judge whether the pressure sensor meets the standard or not. The display module receives the display signal and can display the pressure value of the test pressure based on the display signal, and the power supply module is used for supplying power to the pressure sensor.

Description

Technical Field

[0001] This utility model relates to the field of circuit technology, and in particular to a pressure sensor detection circuit and a corresponding pressure sensor detection device. Background Technology

[0002] In modern life, pressure sensor testing equipment is used in the field of mechanical automation to perform product testing on pressure sensors. However, existing pressure sensor testing equipment often requires the use of probes to test the product. During the probe's contact with the product, the pressure can easily become excessive, making the existing pressure sensor testing equipment prone to damaging the product. Therefore, existing pressure sensor testing equipment suffers from the technical problem of easily damaging the product being tested during the testing process.

[0003] Therefore, it is necessary to provide a pressure sensor detection circuit and a corresponding pressure sensor detection device to solve the above-mentioned technical problems. Utility Model Content

[0004] This invention provides a pressure sensor detection circuit, which effectively solves the technical problem that existing point pressure sensor detection equipment is prone to damaging the product under test.

[0005] This utility model provides a pressure sensor detection circuit, which includes:

[0006] A voltage conversion module is connected to the pressure sensor, which outputs a test signal based on the test pressure provided by the weight. The voltage conversion module performs a voltage conversion operation on the low-voltage test signal to generate a high-voltage test signal.

[0007] A microcontroller chip module, connected to the voltage conversion module, receives the high-voltage test signal and performs detection and calculation operations on the high-voltage test signal to generate a result signal and a display signal;

[0008] An output module, one end of which is connected to the microcontroller chip module, and the other end of which is connected to an external device, is used to transmit the result signal to the external device;

[0009] The external device is used to read the pressure value of the test pressure based on the result signal and to determine whether the pressure sensor meets the standard.

[0010] The display module is connected to the microcontroller chip module and receives the display signal to display the pressure value of the test pressure based on the display signal.

[0011] A power supply module, connected to the pressure sensor, is used to supply power to the pressure sensor.

[0012] Furthermore, the voltage conversion module includes a voltage conversion chip, which includes a voltage conversion input pin and a voltage conversion output pin. The voltage conversion input pin is connected to the pressure sensor, and the voltage conversion chip is used to perform a voltage conversion operation on the low-voltage test signal to generate a high-voltage test signal.

[0013] The microcontroller chip module includes a microcontroller chip, which includes an input pin and a first output pin. The input pin is connected to the voltage conversion output pin. The microcontroller chip is used to perform detection and calculation operations on the high-voltage test signal to generate a result signal.

[0014] The output module includes a transmission chip, which has a chip input pin and a chip output pin. The chip input pin is connected to the first output pin, and the chip output pin is connected to an external device. The transmission chip is used to establish communication between the microcontroller chip and the external device and to transmit the result signal to the external device.

[0015] Furthermore, the microcontroller chip includes a second output pin, which is used to perform detection and calculation operations on the high-voltage test signal to generate a display signal. The display module includes a digital tube driver chip and a digital tube. The digital tube driver chip includes a driver input pin and a driver output pin. The driver input pin is connected to the second output pin. The digital tube driver chip is used to drive the digital tube. The digital tube includes digital tube pins, which are connected to the driver output pin. The digital tube is used to display the pressure value of the test pressure based on the display signal.

[0016] Furthermore, the voltage conversion module includes a measurement chip, which includes a measurement input pin and a measurement output pin. The measurement input pin is connected to the voltage conversion output pin, and the measurement output pin is connected to the input pin. The measurement chip is used to improve the voltage accuracy of the high-voltage test signal.

[0017] Furthermore, the power supply module includes an operational amplifier, which includes a positive input pin, an inverting input pin, and an output pin. The positive input pin is connected to a power supply, and the inverting input pin is grounded. The operational amplifier amplifies the power supply voltage output by the power supply to generate a power supply voltage. The output pin is connected to the pressure sensor and outputs the power supply voltage to power the pressure sensor.

[0018] Furthermore, the microcontroller chip module includes a button unit, the microcontroller chip includes button pins, the button unit is connected to the button pins, and the button unit is used to set the microcontroller chip to a working mode or a verification mode and to set the overpressure alarm mode of the microcontroller chip.

[0019] Furthermore, the microcontroller chip module includes a storage unit, the microcontroller chip includes a storage output pin, the storage unit is connected to the storage output pin, the microcontroller chip outputs a storage signal based on the verification mode or the overpressure alarm mode, and the storage unit is used to save the parameters set by the microcontroller chip based on the storage signal.

[0020] Furthermore, the microcontroller chip is model STM32F103CBT6, and the transmission chip is model SN65HVD75DGKR.

[0021] Furthermore, the voltage conversion chip is model INA128UA / 2K5, and the measurement chip is model ADS8665 IPWR.

[0022] A pressure sensor detection device, comprising any of the pressure sensor detection circuits described above.

[0023] Compared to existing technologies, the advantages of this invention are as follows: This invention provides a pressure sensor detection circuit, which includes a voltage conversion module, a microcontroller chip module, and an output module. The pressure sensor outputs a test signal based on the test pressure provided by a weight. The voltage conversion module converts low-voltage test signals to generate high-voltage test signals. The microcontroller chip module receives the high-voltage test signal, performs detection and calculation operations on it, and generates a result signal. The output module transmits the result signal to an external device, which can then read the pressure value based on the result signal and determine whether the pressure sensor meets the standard. In this invention, the pressure sensor outputs a test signal based on the test pressure provided by a weight, and the pressure sensor detection circuit transmits this test signal to an external device, which then determines whether the pressure sensor meets the standard.

[0024] Because the pressure exerted by the weights on the pressure sensor is relatively stable, there will be no fluctuations in the test pressure. Therefore, using this detection circuit to test the pressure sensor will not cause excessive pressure on the sensor, thus preventing damage to the product under test. Furthermore, this solution eliminates the need for probes to test the pressure sensor, avoiding the risk of probes damaging the product under test due to excessive pressure. This effectively solves the technical problem of existing pressure sensor testing equipment easily damaging the product under test. Because the pressure exerted by the weights on the pressure sensor is relatively stable, the detection circuit obtains the test signal voltage value with high accuracy and small error. Therefore, this pressure sensor detection circuit can accurately detect the test pressure value, thereby accurately determining whether the pressure sensor meets the standard. Consequently, this detection circuit provides good testing results for pressure sensors, effectively improving the yield rate of pressure sensors. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments are briefly introduced below. The drawings described below are only the corresponding drawings of some embodiments of this utility model.

[0026] Figure 1 This is a structural diagram of an embodiment of the pressure sensor detection circuit of this utility model.

[0027] Figure 2 This is a circuit diagram of the voltage conversion module of one embodiment of the pressure sensor detection circuit of this utility model.

[0028] Figure 3 This is a circuit diagram of a microcontroller chip module according to an embodiment of the pressure sensor detection circuit of this utility model.

[0029] Figure 4 This is a circuit diagram of the output module of an embodiment of the pressure sensor detection circuit of this utility model.

[0030] Figure 5 This is a circuit diagram of the display module of an embodiment of the pressure sensor detection circuit of this utility model.

[0031] Figure 6 This is a circuit diagram of the power supply module of one embodiment of the pressure sensor detection circuit of this utility model.

[0032] Figure 7 This is a circuit diagram of the button unit of an embodiment of the pressure sensor detection circuit of this utility model.

[0033] Figure 8 This is a circuit diagram of the storage unit of an embodiment of the pressure sensor detection circuit of this utility model.

[0034] In the diagram, 10 is the pressure sensor detection circuit; 11 is the voltage conversion module; 12 is the microcontroller chip module; 121 is the button unit; 122 is the storage unit; 13 is the output module; 14 is the display module; 15 is the power supply module; 151 is the amplifier positive input pin; 152 is the amplifier inverted input pin; 153 is the amplifier output pin; 16 is the pressure sensor; and 17 is the external device. Detailed Implementation

[0035] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0036] The directional terms mentioned in this utility model, such as "up", "down", "front", "back", "left", "right", "inner", "outer", "side", "top" and "bottom", are only for reference to the orientation of the accompanying drawings. The directional terms used are for the purpose of explaining and understanding this utility model, and are not intended to limit this utility model.

[0037] The terms "first" and "second" in this utility model are used for descriptive purposes only and should not be construed as indicating or implying relative importance, nor as a restriction on the order of events.

[0038] In the diagram, units with similar structures are represented by the same labels.

[0039] Please refer to Figure 1 This invention provides a pressure sensor 16 detection circuit 10, which is applied in a pressure sensor 16 detection device. This pressure sensor 16 detection device is not targeted at a specific pressure sensor 16 on the market, but can detect all resistance strain gauge sensors on the market. The pressure sensor 16 detection circuit 10 includes a voltage conversion module 11, a microcontroller chip module 12, an output module 13, a display module 14, and a power supply module 15. The voltage conversion module 11 is connected to the pressure sensor 16, which can output a test signal based on the test pressure provided by a weight. This test signal can be a voltage signal. The voltage conversion module 11 can perform voltage conversion operations on low-voltage test signals and can generate high-voltage test signals.

[0040] Please refer to Figure 1The microcontroller module 12 is connected to the voltage conversion module 11 and receives the high-voltage test signal. The microcontroller module 12 performs detection and calculation operations on the high-voltage test signal, generating a result signal and a display signal. One end of the output module 13 is connected to the microcontroller module 12, and the other end is connected to an external device 17. The output module 13 can transmit the result signal to the external device 17. The external device 17 can read the pressure value of the test pressure based on the result signal. Furthermore, the external device 17 can determine whether the pressure sensor 16 meets the standard. The display module 14 is connected to the microcontroller module 12, receives the display signal, and displays the pressure value of the test pressure based on the display signal. The power supply module 15 is connected to the pressure sensor 16 and provides power to the pressure sensor 16.

[0041] Please refer to Figures 2 to 8 The following is a detailed description of the specific structure of the detection circuit 10 of the pressure sensor 16:

[0042] Please refer to Figure 2 The voltage conversion module 11 includes a voltage conversion chip U22, model INA128UA / 2K5. The voltage conversion chip U22 includes voltage conversion input pins V-IN and V+IN, and the voltage conversion output pin VO. The voltage conversion input pins V-IN and V+IN are connected to the pressure sensor 16. The voltage conversion chip U22 is used to perform voltage conversion (i.e., voltage amplification) on the low-voltage test signal, generating a high-voltage test signal. The INA128UA / 2K5 chip is a differential instrumentation amplifier chip, capable of amplifying low-distortion input signals as low as 50μV by 200 times. The pressure sensor 16 outputs a weak voltage test signal, which the INA128UA / 2K5 chip precisely amplifies. Therefore, the probability of test signal distortion is extremely low.

[0043] Please refer to Figure 3The microcontroller module 12 includes a microcontroller U1. The microcontroller U1 is an STM32F103CBT6, powered by a +3V3 power supply. The microcontroller U1 includes input pins and a first output pin. The input pin is PB15SPI 2_MOSITIM1_CH3N, and the first output pin is PA9USART1_TXTIM1_CH2. The input pin PB15SPI 2_MOSITIM1_CH3N is connected to the voltage conversion output pin VO, and is used to input a high-voltage test signal. The microcontroller U1 performs detection and calculation operations on the high-voltage test signal, generating a result signal. The first output pin is used to output the result signal.

[0044] Please refer to Figure 4 The output module 13 includes a transmission chip U3, model number SN65HVD75DGKR. Transmission chip U3 includes input pins and output pins. The input pin is RE#, and the output pins are output pin A and output pin B. Input pin RE# is connected to the first output pin PA9USART1_TXTIM1_CH2, and output pins A and B are connected to external device 17. Transmission chip U3 is used to establish communication between microcontroller chip U1 and external device 17, and can transmit result signals to external device 17. Specifically, microcontroller chip U1 and transmission chip U3 communicate via serial communication conforming to the RS485 protocol. Transmission chip U3 can communicate with external device 17 that supports RS485, which can be a computer or other RS485-enabled terminal device.

[0045] Please refer to Figure 3 and Figure 5The microcontroller chip U1 includes a second output pin, PB7I2C1_SDATIM4_CH2, and a second output pin, PB6I2C1_SCLTIM4_CH1. Microcontroller chip U1 is used to detect and calculate high-voltage test signals and can generate display signals. The display module 14 includes a digital tube driver chip U5 and a digital tube LED1. Digital tube driver chip U5 includes driver input pins and driver output pins. The driver input pins include driver input pin SCL and driver input pin SDA. Driver input pin SDA is connected to the second output pin PB7I2C1_SDATIM4_CH2, and driver input pin SCL is connected to the second output pin PB6I2C1_SCLTIM4_CH1. Digital tube driver chip U5 drives digital tube LED1, which includes digital tube pins. The digital tube pins are connected to the driver output pins, and digital tube LED1 is used to display the pressure value of the test pressure based on the display signal.

[0046] Please refer to Figure 5 The drive output pins include drive output pin A / KI1, drive output pin B / KI2, drive output pin C / KI3, drive output pin D / KI4, drive output pin E / KI5, drive output pin F / KI6, drive output pin G / KI7, drive output pin DIG1, ​​drive output pin DIG2, drive output pin DIG3, drive output pin DIG4 and drive output pin DP / KP. The digital tube pins include digital tube pin a, digital tube pin b, digital tube pin c, digital tube pin d, digital tube pin e, digital tube pin f, digital tube pin g, digital tube pin G1, digital tube pin G2, digital tube pin G3, digital tube pin G4 and digital tube pin dp.

[0047] Please refer to Figure 5 The following drive output pins are connected: A / KI1 to pin a of the digital tube; B / KI2 to pin b; C / KI3 to pin c; D / KI4 to pin d; E / KI5 to pin e; F / KI6 to pin f; G / KI7 to pin g; DIG1 to pin G1; DIG2 to pin G2; DIG3 to pin G3; DIG4 to pin G4; and DP / KP to pin dp.

[0048] Please refer to Figure 2 and Figure 3The voltage conversion module 11 includes a measurement chip U17, model ADS8665 IPWR. The measurement chip U17 includes measurement input pins and measurement output pins. The measurement input pin is AIN_P, and the measurement output pin is SDO0. The measurement input pin AIN_P is connected to the voltage conversion output pin VO, and the measurement output pin SDO0 is connected to the input pin PB15SPI2_MOSITIM1_CH3N. The measurement chip U17 is used to improve the voltage accuracy of high-voltage test signals. The measurement chip U17 can accurately acquire high-voltage test signals, ensuring accurate amplification and acquisition of the entire signal output, thereby making the converted pressure data stable and accurate. The configuration of the measurement chip U17 effectively reduces test errors and improves the detection accuracy of the pressure sensor 16 detection circuit 10.

[0049] Please refer to Figure 6 The power supply module 15 includes an operational amplifier U20, model OPA551UA. Operational amplifier U20 includes a positive input pin 151, an inverting input pin 152, and an output pin 153. The positive input pin 151 is connected to a power supply that outputs a 5V power supply voltage. The inverting input pin 152 is grounded. Operational amplifier U20 amplifies the power supply voltage output by generating the supply voltage. The output pin 153 is connected to a pressure sensor 16 and outputs the supply voltage to power the pressure sensor 16.

[0050] Please refer to Figure 6Operational amplifier U20 is a power operational amplifier used to increase the driving capability of power supply module 15. Power supply module 15 also includes resistors R20 and R21. Resistor R20 has a resistance of 5.1KΩ, and resistor R21 has a resistance of 10KΩ; both resistors have a precision of 0.1%. By changing the parameters of resistors R20 and R21, the output voltage of operational amplifier U20 can be adjusted, thus achieving higher accuracy in the output voltage. Conventional power supply chips on the market are unstable, with an error of about 3%, resulting in inaccurate output signals from the sensor itself, and consequently, significant errors in the measured pressure values. However, this solution utilizes operational amplifier U20 to design a high-precision power supply circuit. Therefore, power supply module 15 can output a stable and highly accurate supply voltage of 8.03V. Consequently, the test signal output by pressure sensor 16 is more stable and has less error. Furthermore, the power supply module 15 also includes an ADR5044 chip, which includes a V+ pin and a V- pin. The V+ pin is connected to the power supply and the amplifier's positive input pin 151, while the V- pin is grounded. The ADR5044 can be used to provide 0.1% of the reference voltage, i.e., a reference voltage of 4.096V.

[0051] Please refer to Figure 7 The microcontroller chip module 12 includes a button unit 121, and the microcontroller chip U1 includes button pins. The button unit 121 is connected to the button pins and is used to set the microcontroller chip U1 to a working mode or a verification mode, as well as to set the overpressure alarm mode of the microcontroller chip U1. The button unit 121 includes a first button SW1, a second button SW2, a third button SW3, and a fourth button SW4. The button pins include button pins PA0_WKUPUSART2_CTSADC12_IN0TIM2_CH1_ETR, PA1_USART2_RTSADC12_IN1TIM2_CH2, PA7SPI6_MOSIADC12_IN6TIM3_CH1, and PB0ADC12_MOSIADC12_IN8TIM3_CH3. The button pin PA0_WKUPUSART2_CTSADC12_IN0TIM2_CH1_ETR is connected to the first button SW1, and the button pin PA1_USART2_RTSADC12_IN1TIM2_CH2 is connected to the second button SW2. The button pin PA7SPI 6_MOSIADC12_IN6TIM3_CH1 is connected to the third button SW3, and the button pin PB0ADC12_MOSIADC12_IN8TIM3_CH3 is connected to the fourth button SW4.

[0052] The pressure sensor 16 and its detection circuit 10 include a normal operating mode, a calibration mode, and an overpressure alarm mode. A first button is used to switch modes, a second button is used to confirm the mode, a third button is used to increase the weight in the overpressure alarm mode, and a fourth button is used to decrease the weight in the overpressure alarm mode.

[0053] When using the pressure sensor 16 detection device, the user can calibrate the pressure sensor 16 detection device with a 100g weight, and the program will automatically obtain the current strain gauge sensor parameters.

[0054] First, select the calibration mode using the first button. Pressure sensor 16 is in an unloaded state without any weights, and the empty side value is tested. Then, select the calibration mode again using the first button, place a 100g weight on pressure sensor 16, and press the second button to confirm, performing a large calibration with the 100g weight.

[0055] Furthermore, users can set an overpressure alarm mode for the pressure sensor 16 detection device. First, the user selects the overpressure alarm mode using the first button. Then, the user sets the weight to increase using the third button, or decreases the weight using the fourth button. When the overpressure weight is reached, the user can confirm using the second button. When the test pressure exceeds the upper limit, the pressure sensor 16 detection device will disconnect the relay and output a signal to the PLC or other monitoring devices.

[0056] When the user needs to perform a pressure test on the pressure sensor 16, the user can switch the pressure sensor 16 detection device to the working mode by pressing the first button. Subsequently, the digital tube can display the measured value of the test pressure, and the external device 17 can read the pressure value of the test pressure.

[0057] Please refer to Figure 8 The microcontroller module 12 includes a storage unit 122. The microcontroller U1 includes storage output pins, specifically storage output pins PB10I2C2_SCLUSART3_TX and PB9I2C2_SDAUSART3_RX-. Storage unit 122 includes a storage chip U6, model AT24C256C-SSHL-T. Storage chip U6 includes storage input pins, specifically storage input pins SCL and SDA. Storage input pin SCL is connected to storage output pin PB10I2C2_SCLUSART3_TX, and storage input pin SDA is connected to storage output pin PB9I2C2_SDAUSART3_RX-. The microcontroller U1 outputs a storage signal based on a verification mode or an overpressure alarm mode. Storage unit 122 is used to save the parameters set by the microcontroller U1 based on the storage signal.

[0058] The working principle of this utility model is as follows: When the detection circuit 10 of the pressure sensor 16 is working, the power supply module 15 can amplify the power supply voltage output by the operational amplifier U20. Thus, the power supply module 15 can generate a power supply voltage. This power supply voltage can power the pressure sensor 16, and after the pressure sensor 16 is powered on, it can output a test signal based on the test pressure provided by the weight. Subsequently, the voltage conversion chip U22 of the voltage conversion module 11 receives the low-voltage test signal. The voltage conversion chip U22 is used to perform voltage conversion on the low-voltage test signal, and can generate a high-voltage test signal. To improve the voltage accuracy of the high-voltage test signal, a measurement chip is provided between the voltage conversion chip U22 and the microcontroller chip U1. The microcontroller chip U1 of the microcontroller chip module 12 receives the high-voltage test signal, and can perform detection and calculation operations on the high-voltage test signal, thereby generating a result signal and a display signal. Next, the output module 13 can transmit the result signal to the external device 17 via the transmission chip U3. Furthermore, the external device 17 can read the pressure value of the test pressure based on the result signal, and determine whether the pressure sensor 16 meets the standard. Simultaneously, the display module 14 can receive the display signal, and the digital tube driver chip U5 can drive the digital tube LED1. Therefore, the display module 14 can display the pressure value of the test pressure via the digital tube LED1.

[0059] This invention provides a pressure sensor detection circuit, which includes a voltage conversion module, a microcontroller chip module, and an output module. The pressure sensor outputs a test signal based on a test pressure provided by weights. The voltage conversion module converts low-voltage test signals to high-voltage test signals. The microcontroller chip module receives the high-voltage test signal, performs detection and calculation operations on it, and generates a result signal. The output module transmits the result signal to an external device, which can then read the pressure value based on the result signal and determine whether the pressure sensor meets the standard. In this invention, the pressure sensor outputs a test signal based on a test pressure provided by weights, and the pressure sensor detection circuit transmits this test signal to an external device, which then determines whether the pressure sensor meets the standard.

[0060] Because the pressure exerted by the weights on the pressure sensor is relatively stable, there will be no fluctuations in the test pressure. Therefore, using this detection circuit to test the pressure sensor will not cause excessive pressure on the sensor, thus preventing damage to the product under test. Furthermore, this solution eliminates the need for probes to test the pressure sensor, avoiding the risk of probes damaging the product under test due to excessive pressure. This effectively solves the technical problem of existing pressure sensor testing equipment easily damaging the product under test. Because the pressure exerted by the weights on the pressure sensor is relatively stable, the detection circuit obtains the test signal voltage value with high accuracy and small error. Therefore, this pressure sensor detection circuit can accurately detect the test pressure value, thereby accurately determining whether the pressure sensor meets the standard. The testing accuracy of this pressure sensor detection circuit is greater than 99%, resulting in good testing performance and effectively improving the yield rate of pressure sensors.

[0061] In summary, although the present invention has been disclosed above with reference to preferred embodiments, the above preferred embodiments are not intended to limit the present invention. Those skilled in the art can make various modifications and refinements without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be determined by the scope defined in the claims.

Claims

1. A pressure sensor detection circuit, characterized in that, It includes, A voltage conversion module is connected to the pressure sensor, which outputs a test signal based on the test pressure provided by the weight. The voltage conversion module performs a voltage conversion operation on the low-voltage test signal to generate a high-voltage test signal. A microcontroller chip module, connected to the voltage conversion module, receives the high-voltage test signal and performs detection and calculation operations on the high-voltage test signal to generate a result signal and a display signal; An output module, one end of which is connected to the microcontroller chip module, and the other end of which is connected to an external device, is used to transmit the result signal to the external device; The external device is used to read the pressure value of the test pressure based on the result signal and to determine whether the pressure sensor meets the standard. The display module is connected to the microcontroller chip module and receives the display signal to display the pressure value of the test pressure based on the display signal. A power supply module, connected to the pressure sensor, is used to supply power to the pressure sensor.

2. The pressure sensor detection circuit according to claim 1, characterized in that, The voltage conversion module includes a voltage conversion chip, which includes a voltage conversion input pin and a voltage conversion output pin. The voltage conversion input pin is connected to the pressure sensor. The voltage conversion chip is used to perform voltage conversion on the low-voltage test signal to generate a high-voltage test signal. The microcontroller chip module includes a microcontroller chip, which includes an input pin and a first output pin. The input pin is connected to the voltage conversion output pin. The microcontroller chip is used to perform detection and calculation operations on the high-voltage test signal to generate a result signal. The output module includes a transmission chip, which has a chip input pin and a chip output pin. The chip input pin is connected to the first output pin, and the chip output pin is connected to an external device. The transmission chip is used to establish communication between the microcontroller chip and the external device and to transmit the result signal to the external device.

3. The pressure sensor detection circuit according to claim 2, characterized in that, The microcontroller chip includes a second output pin. The microcontroller chip is used to perform detection and calculation operations on the high-voltage test signal to generate a display signal. The display module includes a digital tube driver chip and a digital tube. The digital tube driver chip includes a driver input pin and a driver output pin. The driver input pin is connected to the second output pin. The digital tube driver chip is used to drive the digital tube. The digital tube includes digital tube pins. The digital tube pins are connected to the driver output pin. The digital tube is used to display the pressure value of the test pressure based on the display signal.

4. The pressure sensor detection circuit according to claim 2, characterized in that, The voltage conversion module includes a measurement chip, which includes a measurement input pin and a measurement output pin. The measurement input pin is connected to the voltage conversion output pin, and the measurement output pin is connected to the input pin. The measurement chip is used to improve the voltage accuracy of the high-voltage test signal.

5. The pressure sensor detection circuit according to claim 1, characterized in that, The power supply module includes an operational amplifier, which has a positive input pin, an inverting input pin, and an output pin. The positive input pin is connected to a power supply, and the inverting input pin is grounded. The operational amplifier amplifies the power supply voltage output by the power supply to generate a power supply voltage. The output pin is connected to the pressure sensor and outputs the power supply voltage to power the pressure sensor.

6. The pressure sensor detection circuit according to claim 2, characterized in that, The microcontroller chip module includes a button unit, and the microcontroller chip includes button pins. The button unit is connected to the button pins. The button unit is used to set the microcontroller chip to a working mode or a verification mode, and to set the overpressure alarm mode of the microcontroller chip.

7. The pressure sensor detection circuit according to claim 6, characterized in that, The microcontroller chip module includes a storage unit, and the microcontroller chip includes a storage output pin. The storage unit is connected to the storage output pin. The microcontroller chip outputs a storage signal based on the verification mode or the overpressure alarm mode. The storage unit is used to save the parameters set by the microcontroller chip based on the storage signal.

8. The pressure sensor detection circuit according to claim 2, characterized in that, The microcontroller chip is model STM32F103CBT6, and the transmission chip is model SN65HVD75DGKR.

9. The pressure sensor detection circuit according to claim 4, characterized in that, The voltage conversion chip is model INA128UA / 2K5, and the measurement chip is model ADS8665 IPWR.

10. A pressure sensor detection device, characterized in that, It includes the pressure sensor detection circuit as described in any one of claims 1-9.

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