Pressure test system and device for pressure sensor

Abstract

The utility model discloses a pressure test system and device for a pressure sensor. The device comprises a cabinet, an upper computer, an industrial personal computer, a temperature and humidity box, a server, a power supply module, a pressure communication module, a real-time data detection module, a pressure valve group, a gas-liquid table and a 15-core bus, the upper computer is connected with the industrial personal computer, and the industrial personal computer is connected with the server, the temperature and humidity box, the real-time data detection module, the power module and the pressure communication module. The real-time data detection module and the power supply module are connected with the test sensor through a 15-core bus; the pressure communication module is connected with the pressure valve group and the gas-liquid table; the gas-liquid table is connected with the temperature and humidity box through a pipeline, and the pressure valve set is arranged between the connecting pipelines of the gas-liquid table and the temperature and humidity box. According to the utility model, high and low temperature environmental stress, humid environment, electric stress and external pressure conditions can be applied, the real-time temperature and relative humidity of the temperature and humidity box and the pressure output by the gas-liquid table are monitored, analog signals output by the pressure sensor are collected in real time, and finally, the data are converted by the upper computer and displayed and stored in real time.

Description

Technical Field

[0001] This utility model belongs to the field of sensor testing technology, specifically relating to a pressure sensor pressure testing system and device. Background Technology

[0002] Sensors interact with the external environment through their sensitive elements, effectively sensing the physicochemical information of their installation location. Pressure sensors are among the most commonly used sensors, widely applied in aircraft, automobiles, ships, and consumer electronics, providing crucial information for their upstream systems. However, pressure sensors face varying environmental stresses during research and development, production, transportation, and storage, leading to reliability issues such as excessive performance drift, decreased output stability, and functional failure. To address this problem, environmental testing systems are needed to simulate the environmental stresses faced by pressure sensors at each stage. By monitoring the output signal of the pressure sensor during environmental testing, its reliability can be evaluated.

[0003] There are generally two technical solutions for existing pressure testing equipment. One is to place the pressure sensor to be tested in a pressure tank and then create the test environment by changing the pressure inside the pressure tank. However, due to the large internal space of the pressure tank, this method cannot achieve the ideal pulse frequency during pulse pressure testing. The other technical solution is to apply the test pressure directly to the pressure sensor to be tested through a pressure pipeline. However, due to the complexity of the pressure pipeline, this method limits the number of samples that can be tested at one time and cannot meet the needs of large-scale testing. Utility Model Content

[0004] The main purpose of this utility model is to overcome the shortcomings and deficiencies of the existing technology and to propose a pressure sensor pressure testing system and device.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A pressure sensor pressure testing system is provided, which includes a host computer and an industrial control computer, and includes a temperature and humidity chamber, a server, a power supply module, a pressure communication module, a real-time data detection module, a pressure valve group, a gas-liquid stage and a 15-core bus.

[0007] The host computer is connected to the industrial control computer, which in turn is connected to the server, temperature and humidity chamber, real-time data detection module, power supply module, and pressure communication module.

[0008] The temperature and humidity chamber is controlled by an industrial computer or manually to provide the testing environment.

[0009] The real-time data detection module is connected to the test pressure sensor inside the temperature and humidity chamber via a 15-pin bus to detect the analog signal output by the pressure sensor.

[0010] The power module is connected to the test pressure sensor via a 15-pin bus and is used to power the test sensor and provide the test voltage.

[0011] The pressure communication module connects to the pressure valve assembly and the gas-liquid stage, and is used by the industrial control computer to control the pressure valve assembly and the gas-liquid stage as well as to perform data communication.

[0012] The gas-liquid stage is connected to the temperature and humidity chamber piping and is used to output external pressure, including hydraulic and pneumatic sources.

[0013] The pressure valve assembly is installed between the gas-liquid stage and the temperature and humidity chamber, and is used to control the opening and closing of the pipeline from the gas-liquid stage to the temperature and humidity chamber.

[0014] The industrial computer is used for setting the temperature of the temperature and humidity chamber, controlling the power supply module to supply power to the pressure sensor, controlling and monitoring the output pressure of the gas-liquid stage, switching the pressure valve group, and collecting data from the real-time data detection module and transmitting it to the host computer.

[0015] The host computer is used for user interaction and operation, including the configuration of the temperature and humidity chamber, real-time data detection module, power supply module, gas-liquid stage and pressure valve group, real-time test data display and test data storage management.

[0016] Furthermore, it also includes a power distribution system for obtaining power from an external power source and distributing it to the various components of the pressure sensor pressure testing system.

[0017] Furthermore, it also includes an audible and visual alarm module, which specifically includes a speaker and indicator lights, used to provide audible and visual alarm prompts when the test unexpectedly stops.

[0018] This utility model also includes a pressure sensor pressure testing device, which is equipped with a host computer and an industrial control computer, including a cabinet, a temperature and humidity chamber, a server, a power supply module, a pressure communication module, a real-time data detection module, a pressure valve group, a gas-liquid stage and a 15-core bus.

[0019] The host computer is connected to the industrial control computer, which in turn connects to the server, the temperature and humidity chamber, the real-time data detection module, the power supply module, and the pressure communication module. The real-time data detection module and the power supply module are connected to the test sensors inside the temperature and humidity chamber via a 15-pin bus. The pressure communication module is connected to the pressure valve group and the gas-liquid stage. The gas-liquid stage is connected to the piping of the temperature and humidity chamber, and the pressure valve group is located between the gas-liquid stage and the connecting piping of the temperature and humidity chamber.

[0020] The host computer, industrial control computer, server, power supply module, pressure communication module and real-time data detection module are set in the same cabinet, while the temperature and humidity chamber, pressure valve group and gas-liquid platform are set in three separate cabinets.

[0021] Furthermore, the temperature and humidity chamber is equipped with 100 sensor stations, each with a power supply interface and a data acquisition interface.

[0022] The temperature and humidity chamber is equipped with two sample racks for placing test sensors;

[0023] The real-time data detection module specifically includes the NI9189 data acquisition unit, of which there are 7 sets, each set can collect data from up to 16 sensor stations;

[0024] The power supply interface is connected to the power module via a 15-pin bus terminal; the data acquisition interface is connected to the NI9189 data acquisition unit via a 15-pin bus terminal.

[0025] Furthermore, the power supply module is specifically a four-channel programmable DC power supply, with two sets in total, one set connected in parallel for every 50 sensor stations.

[0026] Furthermore, it also includes test fixtures, which are set up in a temperature and humidity chamber. There are two sets of test fixtures, each set with 10 groups, and each group corresponds to 10 test pressure sensors. The test fixtures are composed of a base, an air inlet, and an adapter. Each set of test fixtures is connected to a pressure valve group.

[0027] The pressure valve assembly specifically includes manual valves and solenoid valves;

[0028] The pneumatic-hydraulic platform specifically includes a hydraulic power source, a pressure controller, and a booster pump;

[0029] The hydraulic power source, as a pulse pressure source, outputs 10 channels through a pressure valve group, each connected to a test fixture via pipelines.

[0030] The booster pump is connected to the pressure controller, and the pressure controller is connected to the pressure communication module. The booster pump provides a set pressure through the pressure controller, and its output is divided into 10 channels through the pressure valve group, which are connected to another set of test fixtures through pipelines.

[0031] Furthermore, it also includes a power distribution system for obtaining power from an external power source and distributing it to the various components of the pressure sensor pressure testing device; the power distribution system is located outside the cabinet.

[0032] Furthermore, it also includes an audible and visual alarm device, which specifically includes a speaker and indicator lights, used to provide audible and visual alarm prompts when the test unexpectedly stops; the audible and visual alarm device is installed on the outer surface of the cabinet.

[0033] Furthermore, it also includes a display screen; the display screen is fixed on the cabinet and is used to display information and interfaces output by the host computer.

[0034] Compared with the prior art, this utility model has the following advantages and beneficial effects:

[0035] 1. This utility model can apply high and low temperature environmental stress, humid environment, electrical stress, and external pressure conditions to monitor the real-time temperature, relative humidity, and pressure output by the gas-liquid stage of the temperature and humidity chamber. It continuously collects and monitors the analog signals output by the pressure sensor in real time, and finally converts, displays, and stores the data in real time through the host computer.

[0036] 2. The number of test samples in the same batch of this utility model can be up to 100, which can greatly improve the test efficiency.

[0037] 3. The gas-liquid stage of this utility model includes a hydraulic source and a pneumatic source, which can perform high and low temperature working life tests, bias pulse pressure and temperature cycle tests, burst pressure tests and overload pressure tests on pressure sensors.

[0038] 4. This utility model has its own built-in sensor power supply, so no external power supply is required when conducting reliability tests.

[0039] 5. This utility model is equipped with comprehensive protection functions. Each power supply is equipped with independent and comprehensive overvoltage, undervoltage, overcurrent, short circuit and overtemperature protection; the temperature and humidity chamber is equipped with overtemperature protection and leakage protection. In addition, this utility model is equipped with an alarm module, which can provide audible and visual alarm prompts when the test is unexpectedly stopped. After the alarm is triggered, the temperature and humidity chamber will automatically stop heating. Attached Figure Description

[0040] Figure 1 This is a schematic diagram of the structural composition of the pressure sensor pressure testing device in the embodiment;

[0041] Figure 2 This is a structural appearance reference diagram of the pressure sensor pressure testing device in the embodiment;

[0042] Figure 3 This is a schematic diagram of the test fixture in the embodiment;

[0043] Figure 4 This is a schematic diagram of the piping of the pressure testing device in the embodiment. Detailed Implementation

[0044] The present invention will be further described in detail below with reference to the embodiments and accompanying drawings, but the implementation of the present invention is not limited thereto.

[0045] Example

[0046] like Figure 1 and Figure 2 As shown, this utility model discloses a pressure sensor pressure testing device, which includes a cabinet, a host computer, an industrial control computer, a temperature and humidity chamber, a server, a power supply module, a pressure communication module, a real-time data detection module, a pressure valve group, a gas-liquid stage, and a 15-core bus.

[0047] The host computer is connected to the industrial control computer, which in turn connects to the server, the temperature and humidity chamber, the real-time data detection module, the power supply module, and the pressure communication module. The real-time data detection module and the power supply module are connected to the test sensors inside the temperature and humidity chamber via a 15-pin bus. The pressure communication module is connected to the pressure valve group and the gas-liquid stage. The gas-liquid stage is connected to the piping of the temperature and humidity chamber, and the pressure valve group is located between the gas-liquid stage and the connecting piping of the temperature and humidity chamber.

[0048] like Figure 2 As shown, the host computer, industrial control computer, server, power supply module, pressure communication module and real-time data detection module are set in the same cabinet (main cabinet), while the temperature and humidity chamber, pressure valve group and gas-liquid platform are set in three separate cabinets.

[0049] The temperature and humidity chamber is controlled by an industrial computer or manually to provide the testing environment. A real-time data detection module detects the analog signals output by the pressure sensor. A power supply module powers the test sensor and provides the test voltage. A pressure communication module is used by the industrial computer to control the pressure valve group and the gas-liquid stage, and for data communication. The gas-liquid stage outputs external pressure to the test pressure sensor. The pressure valve group controls the flow of the pipeline from the gas-liquid stage to the temperature and humidity chamber. The industrial computer is used for temperature setting of the temperature and humidity chamber, controlling the power supply output of the power module to the pressure sensor, controlling and monitoring the output pressure of the gas-liquid stage, switching the pressure valve group on and off, and collecting data from the real-time data detection module and transmitting it to the host computer. The host computer is used for user interaction and operation, including the configuration of the temperature and humidity chamber, real-time data detection module, power supply module, gas-liquid stage, and pressure valve group; real-time test data display; and test data storage and management.

[0050] like Figure 2 The diagram shown is a schematic representation of the structural appearance of the experimental apparatus in this embodiment. In this embodiment, the apparatus is divided into four parts, and the dimensions of each part are as follows:

[0051] Server rack: 650mm (width) * 850mm (depth) * 1850mm (height);

[0052] Temperature and humidity chamber: 800mm (width) * 1700mm (depth) * 1900mm (height);

[0053] Pressure valve assembly cabinet: 600mm (width) * 800mm (depth) * 1682mm (height);

[0054] Gas-liquid stage: 1100mm (width) * 1596mm (depth) * 1886mm (height).

[0055] The usage conditions for the device in this embodiment are as follows:

[0056] Ambient temperature: 0℃~45℃;

[0057] Relative humidity: ≤80% RH;

[0058] Input voltage: Main unit cabinet: AC220V±10%, 50Hz, 8KW; Temperature and humidity chamber: AC380V±10%, 50Hz, 10KW; Air-liquid platform and pressure valve assembly (air pressure + hydraulic pressure): AC220V / 50Hz, 1KW (hydraulic); AC380V / 50Hz, 6KW (air pressure).

[0059] Surrounding environment: free from corrosive gases, strong magnetic interference, and good heat dissipation and ventilation.

[0060] In this embodiment, the temperature and humidity chamber is equipped with 100 sensor stations and 100 15-pin bus terminals. The test sensors are connected to the power module and the real-time data detection module through the 15-pin bus terminals respectively.

[0061] The temperature and humidity chamber is equipped with two layers of sample racks for placing test sensors, and the workstations are arranged according to the actual situation.

[0062] The basic parameters of the temperature and humidity chamber are configured as follows in this embodiment:

[0063] Nominal volume: 400L;

[0064] Temperature range: -70℃~180℃;

[0065] Temperature fluctuation: ±0.5℃;

[0066] Temperature error: ±2.0℃ (-70℃~150℃), ±3.0℃ (150℃~180℃);

[0067] Protection functions: It comes with over-temperature protection and leakage protection, and can automatically stop heating after an over-temperature alarm.

[0068] In this embodiment, the power supply module is specifically a four-channel programmable DC power supply, with four power supplies outputting simultaneously (V1+ / V1-, V2+ / V2-, V3+ / V3-, V4+ / V4-). There are two sets of power supplies, with one set connected in parallel for every 50 sensor workstations.

[0069] In this embodiment, the first channel of the first power supply corresponds to the workstations: 01, 02, ... 50;

[0070] The second channel of the first power supply corresponds to the following workstations: 01, 02, ... 50;

[0071] The third channel of the first power supply corresponds to the workstations: 01, 02, ... 50;

[0072] The fourth channel of the first power supply corresponds to workstations: 01, 02, ... 50.

[0073] The first channel of the second power supply corresponds to the workstations: 51, 52, ... 100;

[0074] The second channel of the second power supply corresponds to the following workstations: 51, 52, ... 100;

[0075] The third channel of the second power supply corresponds to workstations 51, 52, ... 100;

[0076] The fourth channel of the second power supply corresponds to workstations 51, 52, ... 100.

[0077] The power supply module can operate in two modes: local operation and programmable control. Local operation allows manual adjustment / setting of power supply test parameters. Programmable control mode automatically starts output based on the set voltage (each power supply has 4 outputs, which can be configured on the host computer to output all 4 channels simultaneously or only a specified channel). Each power supply is equipped with independent and comprehensive overvoltage, undervoltage, overcurrent, short circuit, and overtemperature protection.

[0078] The power supply parameters are shown in Table 1 below.

[0079]

[0080]

[0081] Table 1

[0082] In this embodiment, the real-time data detection module specifically includes NI9189 data acquisition units, with a total of 7 sets, each capable of acquiring data from up to 16 sensor stations. The technical performance indicators for analog voltage detection at the sensor stations are as follows:

[0083] Gear detection range: -10V to +10V;

[0084] Measurement error: ±0.1% ±2 LSB;

[0085] The technical performance indicators of analog current detection are as follows:

[0086] Sensor output range: 4mA~20mA, converted using a 500 ohm resistor, actual acquisition range 2V-10V; select conversion rule based on the underlying voltage measurement of the IV conversion program;

[0087] Measurement error: ±0.1% ±2LSB.

[0088] In this embodiment, a testing fixture is also included. The testing fixture is housed within a temperature and humidity chamber, and there are two sets in total: one for hydraulic pressure and one for pneumatic pressure. Each set is divided into 10 groups, each corresponding to 10 test pressure sensors. Each set can be independently pressurized and can simultaneously test 100 sensors of the same model. Figure 3As shown, the test fixture consists of a base, an air inlet, and an adapter. The base is universal, while the adapter can be replaced depending on the type of air inlet of the sensor. Each test fixture is equipped with a pressure valve group.

[0089] The pressure valve assembly specifically includes manual valves and solenoid valves.

[0090] In this embodiment, the gas-liquid stage specifically includes a hydraulic power source, a pressure controller, and a booster pump;

[0091] The hydraulic power source, acting as a pulse pressure source, outputs 10 channels via pressure valves, each connected to a test fixture via piping. A booster pump connects to a pressure controller, which in turn connects to a pressure communication module. The booster pump provides a set pressure through the pressure controller, and its output is also divided into 10 channels via pressure valves, each connected to another test fixture via piping. The industrial control computer provides 10 I / O control signals to control the on / off state of the solenoid valves and monitors the pressure output from the pneumatic-hydraulic stage according to the communication protocol. Figure 4 The diagram shown is a piping schematic of the pressure testing apparatus. Some technical specifications of the gas-liquid stage are as follows:

[0092] Pressure source: hydraulic pressure, pneumatic pressure (0-20MPa)

[0093] Control accuracy: 1%FS for pulse; 0.1%FS for setpoint hold;

[0094] Output frequency: Hydraulic: Triangular wave (0.5Hz); Sine wave / trapezoidal wave (0.2Hz); Air pressure: Constant value held.

[0095] The device in this embodiment has the following testing capabilities:

[0096] High and low temperature working life test: control the gas-liquid stage to output the specified pressure, set the power supply voltage of the test sensor, set the temperature of the temperature and humidity chamber, set the test time, and the equipment will automatically stop when the test time is up.

[0097] Bias pulse pressure-temperature cycle test: Control the gas-liquid stage to output the specified pressure, set fp, set the power supply voltage of the test sensor, set the temperature and humidity chamber temperature, test time, and the equipment will automatically stop when the test time is up.

[0098] Bursting pressure test: Control the gas-liquid platform to output the specified pressure and test time. The equipment will automatically stop when the test time is up.

[0099] Overload pressure test: Control the gas-liquid stage to output the specified pressure, test time, number of cycles, waiting time, pressure cancellation when test time is up, enter waiting time, continue to apply pressure when waiting time ends, and automatically end the test after the number of cycles is up.

[0100] In this embodiment, a power distribution system and an audible and visual alarm device are also included. The power distribution system is used to obtain power from an external power source and distribute it to the various components of the pressure sensor pressure testing device. The power distribution system is located outside the cabinet. The audible and visual alarm device specifically includes a speaker and indicator lights, which are used to provide audible and visual alarm prompts when the test unexpectedly stops. The audible and visual alarm device is located on the outer surface of the cabinet.

[0101] In this embodiment, a display screen and a keyboard and mouse are also included. The display screen is fixed on the cabinet and is used to display information and the interface output by the host computer. The keyboard and mouse are used for user input to the host computer. In actual implementation, the host computer software and database can be customized. The host computer software can adopt a Windows-based Chinese menu display interface to achieve intuitive display, convenient operation, and data storage. The host computer software can be configured with functions such as setting an administrator password, advanced settings (number of power supplies, whether the temperature and humidity chamber is programmable, whether the power supply is programmable, temperature and humidity chamber serial port configuration, power supply serial port configuration, default path, and workstation configuration table), setting test parameters, and alarm prompts.

[0102] In this embodiment, the device automatically starts and stops the test. When outputting, sensor stations 1-100 are simultaneously powered on for testing, and when stopping, all of them are powered off to stop the test.

[0103] The pressure test performed on the device in this embodiment includes the following steps:

[0104] A. Install the pressure sensor inside the temperature and humidity chamber via the pressure sensor interface;

[0105] B. Connect the signal line of the pressure sensor under test to the male connector of the 15-pin connector using a wire;

[0106] C. Connect the male connector of the 15-pin connector to the female connector of the 15-pin connector on the main unit cabinet;

[0107] D. Open the host computer and enter the test batch number name and data storage path;

[0108] E. Set the power supply for the current test group to provide a power-on working environment for the pressure sensor under test;

[0109] F. Set the test program for the temperature and humidity chamber of the current test group to provide the temperature and humidity test environment for the pressure sensor under test;

[0110] G. Set the pressure test program in the gas-liquid stage to provide a pressure test environment for the pressure sensor under test;

[0111] H. Perform the test run, and apply test conditions to the device according to the set parameters and the selected test area;

[0112] I. After the test is completed, remove the pressure sensor to be tested and store the test data.

[0113] In addition, if the experiment stops unexpectedly, it can be resumed manually according to the parameters set at the time of the stop. When it is necessary to stop the experiment, a single-channel or multi-channel stop operation can be performed. There are two ways to stop the experiment: automatic stop when the experiment timer expires, and manual stop by selecting the stop button.

[0114] During the experiment, the device continuously monitors data including temperature in the humidity chamber, voltage values ​​at sensor stations, and analog signals from sensor stations, displaying and storing this data in real time on the host computer. The host computer uses a database to manage data files, preprocesses the stored real-time data, and can also export the actual stored data to an Excel spreadsheet for later analysis. Data storage intervals are set to one timer. For each test set, two types of files can be generated and stored according to the batch number: one for rapid storage (generated daily) and one for fixed-interval storage (allowing for curve playback and trend viewing). The ability to enable / disable rapid storage mode and interval storage mode (files in TXT format) is optional.

[0115] It should also be noted that, in this specification, terms such as "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0116] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A pressure sensor pressure testing system, comprising a host computer and an industrial control computer, characterized in that, It includes a temperature and humidity chamber, server, power supply module, pressure communication module, real-time data detection module, pressure valve group, gas-liquid stage and 15-core bus; The host computer is connected to the industrial control computer, which in turn is connected to the server, temperature and humidity chamber, real-time data detection module, power supply module, and pressure communication module. The temperature and humidity chamber is controlled by an industrial computer or manually to provide the testing environment. The real-time data detection module is connected to the test pressure sensor inside the temperature and humidity chamber via a 15-pin bus to detect the analog signal output by the pressure sensor. The power module is connected to the test pressure sensor via a 15-pin bus and is used to power the test sensor and provide the test voltage. The pressure communication module connects to the pressure valve assembly and the gas-liquid stage, and is used by the industrial control computer to control the pressure valve assembly and the gas-liquid stage as well as to perform data communication. The gas-liquid stage is connected to the temperature and humidity chamber piping and is used to output external pressure, including hydraulic and pneumatic sources. The pressure valve assembly is installed between the gas-liquid stage and the temperature and humidity chamber, and is used to control the opening and closing of the pipeline from the gas-liquid stage to the temperature and humidity chamber. The industrial computer is used for setting the temperature of the temperature and humidity chamber, controlling the power supply module to supply power to the pressure sensor, controlling and monitoring the output pressure of the gas-liquid stage, switching the pressure valve group, and collecting data from the real-time data detection module and transmitting it to the host computer. The host computer is used for user interaction and operation, including the configuration of the temperature and humidity chamber, real-time data detection module, power supply module, gas-liquid stage and pressure valve group, real-time test data display and test data storage management.

2. The pressure sensor pressure testing system according to claim 1, characterized in that, It also includes a power distribution system for obtaining power from an external power source and distributing it to the various components of the pressure sensor pressure testing system.

3. The pressure sensor pressure testing system according to claim 1, characterized in that, It also includes an audible and visual alarm module, which specifically includes a speaker and indicator lights, used to provide audible and visual alarm prompts when the test unexpectedly stops.

4. A pressure sensor pressure testing device, comprising a host computer and an industrial control computer, characterized in that, It includes a cabinet, a temperature and humidity chamber, a server, a power supply module, a pressure communication module, a real-time data detection module, a pressure valve group, a gas-liquid platform, and a 15-core bus. The host computer is connected to the industrial control computer, which in turn connects to the server, the temperature and humidity chamber, the real-time data detection module, the power supply module, and the pressure communication module. The real-time data detection module and the power supply module are connected to the test sensors inside the temperature and humidity chamber via a 15-pin bus. The pressure communication module is connected to the pressure valve group and the gas-liquid stage. The gas-liquid stage is connected to the piping of the temperature and humidity chamber, and the pressure valve group is located between the gas-liquid stage and the connecting piping of the temperature and humidity chamber. The host computer, industrial control computer, server, power supply module, pressure communication module and real-time data detection module are set in the same cabinet, while the temperature and humidity chamber, pressure valve group and gas-liquid platform are set in three separate cabinets.

5. The pressure sensor pressure testing device according to claim 4, characterized in that, The temperature and humidity chamber is equipped with 100 sensor stations, each with a power supply interface and a data acquisition interface. The temperature and humidity chamber is equipped with two sample racks for placing test sensors; The real-time data detection module specifically includes the NI9189 data acquisition unit, of which there are 7 sets, each set can collect data from up to 16 sensor stations; The power supply interface is connected to the power module via a 15-pin bus terminal; the data acquisition interface is connected to the NI9189 data acquisition unit via a 15-pin bus terminal.

6. The pressure sensor pressure testing device according to claim 5, characterized in that, The power supply module is a four-channel programmable DC power supply, with two sets in total. One power supply is connected in parallel for every 50 sensor stations.

7. The pressure sensor pressure testing device according to claim 4, characterized in that, It also includes test fixtures, which are set up in a temperature and humidity chamber. There are two sets of test fixtures, each set has 10 groups, and each group corresponds to 10 test pressure sensors. The test fixtures are composed of a base, an air inlet and an adapter. Each set of test fixtures is connected to a pressure valve group. The pressure valve assembly specifically includes manual valves and solenoid valves; The pneumatic-hydraulic platform specifically includes a hydraulic power source, a pressure controller, and a booster pump; The hydraulic power source, as a pulse pressure source, outputs 10 channels through a pressure valve group, each connected to a test fixture via pipelines. The booster pump is connected to the pressure controller, and the pressure controller is connected to the pressure communication module. The booster pump provides a set pressure through the pressure controller, and its output is divided into 10 channels through the pressure valve group, which are connected to another set of test fixtures through pipelines.

8. The pressure sensor pressure testing device according to claim 4, characterized in that, It also includes a power distribution system for obtaining power from an external power source and distributing it to the various components of the pressure sensor pressure testing device; the power distribution system is located outside the cabinet.

9. A pressure sensor pressure testing device according to claim 4, characterized in that, It also includes an audible and visual alarm device, which specifically includes a speaker and indicator lights, used to provide audible and visual alarm prompts when the test unexpectedly stops; the audible and visual alarm device is installed on the outer surface of the cabinet.

10. A pressure sensor pressure testing device according to claim 4, characterized in that, It also includes a display screen; the display screen is fixed on the cabinet and is used to display information and interface output by the host computer.

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