WO2022223057A2

WO2022223057A2 - Intelligent operation and maintenance test platform for accelerated failure excitation of industrial sensor

Info

Publication number: WO2022223057A2
Application number: PCT/CN2022/107206
Authority: WO
Inventors: 何方; 张娜; 袁峰; 王松亭; 韩策; 常伟; 张凯; 金东义
Original assignee: 国机传感科技有限公司; 沈阳仪表科学研究院有限公司
Priority date: 2021-10-09
Filing date: 2022-07-21
Publication date: 2022-10-27
Also published as: CN113720369A; WO2022223057A3; CN113720369B

Abstract

The present invention belongs to the field of measurement and control systems, and particularly relates to an intelligent operation and maintenance test platform for accelerated failure excitation of an industrial sensor. The intelligent operation and maintenance test platform comprises a measurement and control host, a data acquisition and control device, a pressure controller, a water tank, a water pump, a first relay assembly, a first air pipe assembly, a first electromagnetic valve assembly, a first pressure sensor clamp assembly, a first pressure sensor assembly, a first temperature sensor assembly, a first temperature sensor clamp assembly, a first flow sensor clamp assembly, a first water output pipe assembly, a first flow sensor assembly, a second electromagnetic valve assembly, a first water intake pipe assembly, a second relay assembly, an eleventh relay, a first liquid level sensor assembly, a first liquid level sensor clamp assembly, a first material level sensor assembly and a first material level sensor clamp assembly. By means of the present invention, the functions of accelerated failure excitation, fault excitation, data acquisition, data storage, etc. of various industrial sensors can be realized.

Description

Accelerated failure of industrial sensors stimulates intelligent operation and maintenance test platform

technical field

The invention belongs to the field of measurement and control systems, and in particular relates to an industrial sensor accelerated failure to stimulate an intelligent operation and maintenance test platform.

Background technique

The status information of industrial sensors, through feature identification and fault characterization, forms the "file" of the sensor, that is, the sensor status database. The data of past sensor failure cases are combined to form a real-time health analysis report for each online sensor, and based on this report, predictive maintenance decisions are made.

At present, there is no ready-made industrial sensor failure excitation system on the market to meet the needs of the operation and maintenance platform for sensor performance degradation or measurement data accumulation after failure. Therefore, it is of great significance to develop an industrial sensor failure excitation system that integrates the functions of industrial sensor performance testing, accelerated failure excitation, intelligent analysis, and data storage.

SUMMARY OF THE INVENTION

The invention aims to overcome the shortcomings of the prior art and provide an industrial sensor which has the functions of accelerating failure excitation, fault excitation, data acquisition, data storage, etc. of various industrial sensors, and can improve the prediction accuracy of the operation and maintenance platform. Accelerated failure stimulates intelligent operation and maintenance test platform.

The accelerated failure of industrial sensors stimulates intelligent operation and maintenance test platform, including measurement and control host, data acquisition and control device, pressure controller, water tank, water pump, the first relay assembly, the first air pipe assembly, the first solenoid valve assembly, and the first pressure sensor card Tool assembly, first pressure sensor assembly, first temperature sensor assembly, first temperature sensor clamp assembly, first flow sensor clamp assembly, first outlet pipe assembly, first flow sensor assembly, second solenoid valve assembly, first 1 water inlet pipe assembly, the second relay assembly, the 11th relay, the first liquid level sensor assembly, the first liquid level sensor fixture assembly, the adjustable DC voltage source, the first material level sensor assembly, the first material level sensor fixture Components and air source; measurement and control host, adjustable DC voltage source, the first material level sensor assembly, the first liquid level sensor assembly, the second relay assembly, the 11th relay, the first flow sensor assembly, the first temperature sensor assembly, the first 1 The signal transmission ports of the pressure sensor assembly, the first relay assembly and the pressure controller are respectively connected with the signal transmission port of the data acquisition and control device; the signal transmission port of the 11th relay is connected with the signal transmission port of the water pump; the second relay assembly The signal transmission port of the second solenoid valve assembly is connected to the signal transmission port of the second solenoid valve assembly; the water outlet of the pump is communicated with the water inlet of the first flow sensor assembly through the second solenoid valve assembly and the first water inlet pipe assembly; the first flow sensor assembly The water outlet is communicated with the water inlet of the water tank through the first water outlet pipe assembly; the water outlet of the water tank is communicated with the water inlet of the pump; the first temperature sensor assembly is fixed on the first temperature sensor fixture assembly; the signal of the first relay assembly The transmission port is connected with the signal transmission port of the first solenoid valve assembly; the first pressure sensor assembly is fixed on the first pressure sensor fixture assembly; the air outlet of the pressure controller passes through the first air pipe assembly and the first solenoid valve assembly It is communicated with the air inlet of the first pressure sensor assembly; the air outlet of the air source is communicated with the air inlet of the pressure controller; the adjustable DC voltage source is respectively connected to the first material level sensor assembly, the first liquid level sensor assembly and the first flow sensor The assembly, the first temperature sensor assembly, and the first pressure sensor assembly provide power.

The invention is an intelligent operation and maintenance test platform for accelerated failure excitation of industrial sensors, which integrates the functions of accelerated failure excitation, fault excitation, data acquisition, and data storage of various industrial sensors. Through this system, the failure of main industrial sensors, such as temperature, pressure, flow, liquid level, material level, etc., can be accelerated and stored, and test data can be accumulated and stored to provide test data for sensor fault diagnosis and intelligent remote operation and maintenance platform modeling. It is of great significance to improve the prediction accuracy of the entire operation and maintenance platform.

Description of drawings

The present invention will be further described below with reference to the accompanying drawings and specific embodiments. The protection scope of the present invention will not be limited to the following expressions.

1 is a schematic structural diagram of an intelligent operation and maintenance test platform for accelerated failure of temperature and damp-heat environment industrial sensors of the present invention;

FIG. 2 is a schematic structural diagram of a vibration environment industrial sensor accelerated failure excitation intelligent operation and maintenance test platform according to the present invention;

3 is a schematic structural diagram of a data acquisition and control device of the present invention;

FIG. 4 is a schematic diagram of the network communication structure of the present invention.

In the figure: 1. Measurement and control host; 2. Data acquisition and control device; 3. Printer; 4. Pressure controller; 5. Water tank; 6. Water pump; 72. The eleventh relay; 83. Adjustable DC power supply; 94. Gas source; 95, high and low temperature test box; 96, shaking table; 161, local router; 162, wireless communication module; 163, network server; 164, router; 165, browser; 166, dynamic display screen.

Detailed ways

The first relay assembly of the present invention includes relays 7, 8, 9, 10, 11; the first air pipe assembly includes air pipes 12, 13, 14, 15, 16; the first solenoid valve assembly includes solenoid valves 17, 18, 19, 20, 21; the first pressure sensor fixture assembly includes pressure sensor fixtures 22, 23, 24, 25, 26; the first pressure sensor assembly includes pressure sensors 27, 28, 29, 30, 31; the first temperature sensor assembly includes a temperature sensor 32, 33, 34, 35, 36; the first temperature sensor fixture assembly includes temperature sensor fixtures 37, 38, 39, 40, 41; the first flow sensor fixture assembly includes flow sensor fixtures 42, 43, 44, 45, 46; the first water outlet pipe assembly includes water outlet pipes 47, 48, 49, 50, 51; the first flow sensor assembly includes flow sensors 52, 53, 54, 55, 56; the second solenoid valve assembly includes solenoid valves 57, 58, 59, 60, 61; the first water inlet pipe assembly includes water inlet pipes 62, 63, 64, 65, 66; the second relay assembly includes relays 67, 68, 69, 70, 71; the first liquid level sensor assembly includes liquid Level sensors 73, 74, 75, 76, 77; the first liquid level sensor fixture assembly includes liquid level sensor fixtures 78, 79, 80, 81, 82; the first material level sensor assembly includes material level sensors 84, 85, 86, 87, 88; the first material level sensor fixture assembly includes material level sensor fixtures 89, 90, 91, 92, 93; the first switch quantity output interface assembly includes switch quantity output interfaces 123, 124, 125, 126, 127; the second switch quantity output interface assembly includes switch quantity output interfaces 128, 129, 130, 131, 132; the first analog quantity input interface assembly includes analog quantity input interfaces 136, 137, 138, 139, 140; the second analog quantity The input interface component includes analog input interfaces 141, 142, 143, 144, 145; the third analog input interface component includes analog input interfaces 146, 147, 148, 149, 150; the fourth analog input interface component includes analog Input interfaces 151 , 152 , 153 , 154 and 155 ; the fifth analog input interface component includes analog input interfaces 156 , 157 , 158 , 159 and 160 .

As shown in Figure 1, the test platform includes a measurement and control host 1, a data acquisition and control device 2, a pressure controller 4, a water tank 5, a water pump 6, the first relay assembly, the first air pipe assembly, the first solenoid valve assembly, and the first pressure Sensor clamp assembly, first pressure sensor assembly, first temperature sensor assembly, first temperature sensor clamp assembly, first flow sensor clamp assembly, first water outlet pipe assembly, first flow sensor assembly, second solenoid valve assembly , the first water inlet pipe assembly, the second relay assembly, the eleventh relay 72, the first liquid level sensor assembly, the first liquid level sensor fixture assembly, the adjustable DC voltage source 83, the first material level sensor assembly, the first material Position sensor fixture assembly and air source 94; the measurement and control host 1, adjustable DC voltage source 83, the first material level sensor assembly, the first liquid level sensor assembly, the second relay assembly, the eleventh relay 72, the first flow rate The signal transmission ports of the sensor assembly, the first temperature sensor assembly, the first pressure sensor assembly, the first relay assembly and the pressure controller 4 are respectively connected with the signal transmission ports of the data acquisition and control device 2; the signal transmission ports of the eleventh relay 72 It is connected with the signal transmission port of the water pump 6; the signal transmission port of the second relay assembly is connected with the signal transmission port of the second solenoid valve assembly; the water outlet of the water pump 6 is connected to the second solenoid valve assembly and the first water inlet pipe assembly with the 1. The water inlet of the flow sensor assembly is communicated; the water outlet of the first flow sensor assembly is communicated with the water inlet of the water tank 5 through the first water outlet pipe assembly; the water outlet of the water tank 5 is communicated with the water inlet of the water pump 6; the first temperature sensor assembly is fixed set on the first temperature sensor fixture assembly; the signal transmission port of the first relay assembly is connected to the signal transmission port of the first solenoid valve assembly; the first pressure sensor assembly is fixed on the first pressure sensor fixture assembly The air outlet of the pressure controller 4 communicates with the air inlet of the first pressure sensor assembly through the first air pipe assembly and the first solenoid valve assembly; the air outlet of the air source 94 communicates with the air inlet of the pressure controller 4; the adjustable DC voltage The source 83 supplies power to the first material level sensor assembly, the first liquid level sensor assembly, the first flow sensor assembly, the first temperature sensor assembly, and the first pressure sensor assembly, respectively.

The present invention is also provided with a high and low test box 95; the first pressure sensor fixture assembly, the first pressure sensor assembly, the first temperature sensor assembly, the first temperature sensor fixture assembly, the first flow sensor fixture assembly, the first flow sensor The assembly, the first water inlet pipe assembly, the first liquid level sensor assembly, the first liquid level sensor fixture assembly, the first material level sensor assembly and the first material level sensor clamp assembly are placed in the high and low temperature test chamber 95 respectively, Change the temperature and humidity of the environment where the sensor is located, and perform an accelerated failure excitation test for pressure, temperature, flow, liquid level, and material level sensors.

The present invention is also provided with a vibrating table 96; the first pressure sensor fixture assembly, the first pressure sensor assembly, the first temperature sensor assembly, the first temperature sensor clamp assembly, the first flow sensor clamp assembly, and the first flow sensor assembly , the first water inlet pipe assembly, the first liquid level sensor assembly, the first liquid level sensor clamp assembly, the first material level sensor assembly and the first material level sensor clamp assembly are placed on the vibration table 96 respectively, and the vibration of the sensor is changed by changing the Accelerated failure excitation test for sensors such as pressure, temperature, flow, liquid level, and material level.

The data acquisition and control device 2 includes an RS485 communication interface 122, a first switch output interface component, a second switch output interface component, an eleventh switch output interface 133, an analog output interface 134, an Ethernet communication interface 135, a first Analog input interface component, the second analog input interface component, the third analog input interface component, the fourth analog input interface component, and the fifth analog input interface component.

The test platform of the present invention has three failure excitation environments, namely: temperature failure excitation environment, damp heat failure excitation environment, and vibration failure excitation environment.

As shown in Figures 1, 2, and 3, the temperature failure excitation environment means that the sensor is assembled on the corresponding fixture and placed in the high and low temperature test box 95, so that the sensor is in an environment of normal temperature, high temperature, low temperature, and high and low temperature impact. , the accelerated failure excitation test of pressure, temperature, flow, liquid level, material level and other sensors; the damp heat failure excitation environment refers to assembling the sensor on the corresponding sensor fixture and placing it in the high and low temperature test box 95. By changing the temperature and humidity of the environment where the sensor is located, the accelerated failure excitation test is carried out on sensors such as pressure, temperature, flow, liquid level, material level, etc.; specifically, the excited sensor is assembled on the corresponding tooling and placed at high and low temperature In the test chamber, the temperature and humidity of the high and low temperature test chamber are controlled, and the performance of the sensor is degraded or When a fault occurs, the data acquisition and control device collects data under various temperature and humidity conditions in real time, and transmits it to the measurement and control host for analysis and storage; the vibration failure excitation environment refers to assembling the sensor on the corresponding fixture and placing it on the vibration table. 96, by changing the vibration direction and vibration frequency of the sensor, the accelerated failure excitation test is carried out on sensors such as pressure, temperature, flow, liquid level, and material level. Specifically, the excited sensor is assembled on the corresponding tooling and fixed on the shaking table, and the parameters such as the frequency, amplitude, and acceleration of the shaking table vibration are controlled, and the test is carried out in three directions. The data acquisition and control device collects real-time data in real time. , and sent to the measurement and control host for analysis and storage.

By controlling the temperature of the high and low temperature test box 95 and the rate of temperature change, the temperature performance test of the pressure sensor, temperature sensor, flow sensor, liquid level sensor, material level sensor, and temperature shock test are realized, so that the sensors can be tested at low temperature, high temperature, and temperature. Work with rapid changes. It can not only obtain the working data of the sensor under low temperature, high temperature and rapid temperature change, but also extract the working characteristic parameters of the sensor under low temperature, high temperature and rapid temperature change. The failure of the excitation sensor can also be accelerated, and the data acquisition and control device 2 records the data in this process in real time, so as to provide gradual failure data for the test platform based on mechanism analysis.

By controlling the vibration acceleration and vibration frequency of the vibration table 96, the vibration performance test of the pressure sensor, temperature sensor, flow sensor, liquid level sensor and material level sensor placed on the vibration table 96 is realized, so that the sensor can be tested under different vibration acceleration and vibration frequency. working. Not only can the data of the sensor working in the vibration environment be obtained, the characteristic parameters of the sensor working in the vibration environment can be extracted, and the failure of the sensor can also be accelerated by making the sensor work in the vibration state for a long time. The data acquisition and control device 2 records in real time The data in this process provides gradual failure data for the test platform based on mechanism analysis.

The test platform includes five parts: pressure failure excitation sub-system, temperature failure excitation sub-system, flow failure excitation sub-system, liquid level failure excitation sub-system, and material level failure excitation sub-system.

In order to obtain the data of simultaneous failure excitation of multiple sensors, and also to better compare the data of different sensors, the present invention simultaneously excites five sensors of the same type. The tester can operate the measurement and control host 1 at any time to generate statistical reports of the test situation in any period of time, providing data support for the predictive maintenance of the sensor. The measurement and control host 1 is connected to the printer 3, and the test data of any time period or the statistical data of the test results can be printed at any time through the operation of the measurement and control host 1. In order to solve the problem that the test parameters and test procedures of different types of sensors are not exactly the same, the measurement and control host 1 can set the test parameters and test procedures to improve the versatility and flexibility of the system. By operating the monitoring host 1, the tester can generate corresponding test data reports and statistical data reports according to different time periods, sensor types, etc., and save the test data to disk. Export for data analysis system analysis. In order to ensure that only authorized testers can operate the test system, the measurement and control host 1 is set to start the login interface, and it is necessary to enter the correct user name and password before entering the system to work. The data acquisition and control device 2 is connected with the measurement and control host 1 through the Ethernet communication interface 135, accepts the measurement and control instructions issued by the measurement and control host 1 in real time, and uploads the data obtained by the test to the measurement and control host 1 through the Ethernet communication interface 135 to realize data acquisition and control. The data communication between the control device 2 and the measurement and control host 1; the RS485 communication interface 122 is connected with the pressure controller 4, and the gas pressure output by the pressure controller 4 is controlled by means of RS485 communication; Relay control, control pressure failure to excite the subsystem to perform corresponding actions; the 11th switch output interface 133 is connected to the 11th relay 72, and controls the start and stop of the water pump 6 through the control of the 11th relay 72; the switch output interface They are respectively connected with the relays, and through the control of the relays, the control flow failure triggers the sub-system to perform corresponding actions; the analog output interface 134 is connected with the adjustable DC voltage source 83, and the output of the adjustable DC voltage source 83 is controlled by the analog output The analog input interface is connected to the pressure sensor, temperature sensor, flow sensor, liquid level sensor and material level sensor respectively, and the measurement signals output by the pressure sensor, temperature sensor, flow sensor, liquid level sensor and material level sensor are collected. ;

As shown in Figures 1, 2 and 3, the pressure failure excitation subsystem includes data acquisition and control device 2, air source 94, pressure controller 4, relay, air pipe, solenoid valve, pressure sensor fixture, pressure sensor, adjustable DC Voltage source 83, analog input interface. The pressure controller 4 is controlled by the data acquisition and control device 2 to output pressures of different magnitudes, so that the pressure sensor can work under abnormal conditions of overpressure. Not only can the data of the sensor work under abnormal pressure conditions be obtained, but also the characteristic parameters of the sensor under abnormal pressure conditions can be extracted. By making the sensor work under the condition of overpressure for a long time, the failure of the sensor can be accelerated, and the data acquisition and control device 2 can be realized in real time. The data in this process is recorded to provide gradual failure data for the intelligent operation and maintenance test platform based on mechanism analysis.

The test platform controls the output of the adjustable DC voltage source 83 through the data acquisition and control device 2, so that the power supply of the pressure sensor, temperature sensor, flow sensor, liquid level sensor and material level sensor assembled on the platform changes. Adjusting the output of the DC voltage source 83 enables the sensor to work under abnormal conditions such as under-voltage and over-voltage. Not only can the data of the sensor work under abnormal power supply conditions be obtained, but also the characteristic parameters of the sensor under abnormal power supply conditions can be extracted. By making the sensor work under the condition of overvoltage for a long time, the failure of the sensor can also be accelerated. Data acquisition and control device 2 The data during this process is recorded in real time, providing gradual failure data for the test platform.

The air source 94 is connected with the air inlet of the pressure controller 4 to provide air pressure for the system; the data acquisition and control device 2 controls the pressure controller 4 to output the corresponding gas pressure; the relays are respectively connected with the solenoid valves, and the data acquisition and control device 2 By controlling the relay, and then controlling the opening and closing of the solenoid valve, the control of 5 air circuits is realized; the air outlet of the pressure controller 4 is connected with the common end of the air inlet of the air pipe; the air outlet of the air pipe is respectively connected with the air inlet of the solenoid valve. connection, the air outlet of the solenoid valve is respectively connected with the pressure sensor; the pressure sensor is respectively assembled on the pressure sensor fixture. The adjustable DC voltage source 83 is connected with the pressure sensor to provide power for the pressure sensor; the pressure sensor is respectively connected with the analog input interface, and transmits the measurement signal output by the pressure sensor to the data acquisition and control device 2;

As shown in Figures 1, 2, and 3, the temperature failure excitation subsystem includes a data acquisition and control device 2, a temperature sensor, a temperature sensor fixture, an adjustable DC voltage source 83, and an analog input interface. The temperature sensors are respectively assembled on the temperature sensor fixtures. The adjustable DC voltage source 83 is connected with the temperature sensor to provide power for the temperature sensor;

As shown in Figures 1, 2 and 3, the flow failure excitation sub-system includes data acquisition and control device 2, water tank 5, water pump 6, flow sensor fixture, water outlet pipe, flow sensor, solenoid valve, water inlet pipe, relay, 11th Relay 72, adjustable DC voltage source 83, analog input interface. The data acquisition and control device 2 controls the 11th relay 72, and then controls the start and stop of the water pump 6. The water inlet of the water pump 6 is connected with the water outlet of the water tank 5, and the water outlet of the water pump 6 is connected with the inlet common end of the solenoid valve. The outlet of the valve is respectively connected with the water inlet pipe, the water inlet pipe is respectively connected with the inlet of the flow sensor, the outlet of the flow sensor is connected with the inlet of the water outlet pipe, the common end of the outlet of the water outlet pipe is connected with the water inlet of the water tank 5, and the pump The return tank 5; the flow sensors are respectively assembled on the flow sensor fixtures; the relays are respectively connected with the solenoid valves, the data acquisition and control device 2 controls the relays, and then controls the opening and closing of the solenoid valves; the adjustable DC voltage source 83 and the flow sensor The flow sensor is connected to the flow sensor to provide power; the flow sensor is respectively connected with the analog input interface, and the measurement signal output by the flow sensor is transmitted to the data acquisition and control device 2 .

As shown in Figures 1, 2, and 3, the liquid level failure excitation sub-system includes a data acquisition and control device 2, a liquid level sensor, a liquid level sensor fixture, an adjustable DC voltage source 83, and an analog input interface. The liquid level sensors are respectively assembled on the liquid level sensor fixtures. The adjustable DC voltage source 83 is connected with the liquid level sensor to provide power for the liquid level sensor;

As shown in Figures 1, 2, and 3, the material level failure excitation sub-system includes a data acquisition and control device 2, a material level sensor, a material level sensor fixture, an adjustable DC voltage source 83, and an analog input interface. The material level sensors are respectively assembled on the material level sensor fixtures. The adjustable DC voltage source 83 is connected with the material level sensor to provide power for the material level sensor;

As shown in FIG. 4 , the measurement and control host 1 can be connected to the local router 161, and the measurement and control host 1 can be connected to the Ethernet in a wired manner, or it can be connected with the wireless communication module 162, and the measurement and control host 1 can be connected wirelessly. The data collected by the measurement and control host 1 is transmitted to the remote network server 163 by means of the TCP/IP (Transmission Control Protocol/Internet Protocol) protocol through the Ethernet, and the server 163 has the functions of big data analysis, The function of machine learning, through the intelligent software installed on it, can realize the analysis of the test data uploaded by the data acquisition and control device 2 . The network server 163 analyzes and compares the data of the sensor in different environmental states by means of big data, machine learning, and intelligent algorithms, and realizes the feature recognition, fault characterization and health state prediction of the sensor by means of big data. The combination of mechanism-based analysis and big data-based intelligent algorithm analysis improves the accuracy of sensor feature identification, fault characterization and health state prediction.

As shown in FIG. 4 , the network server 163 communicates with the measurement and control host 1 in a wired or wireless manner by means of the TCP/IP protocol, acquires the data of the measurement and control host 1, and analyzes and processes the data at the same time. The network server 163 communicates with the router 164 is connected, the router 164 is connected with the browser 165, the data analyzed and processed by the web server 163 is displayed through the browser 165; the router 164 is also connected with the dynamic display screen 166, and the dynamic display screen 166 displays the analyzed and processed data.

The test platform of the invention not only realizes the accelerated failure excitation of pressure sensors, temperature sensors, flow sensors, liquid level sensors, and material level sensors commonly used in the industry, but also realizes the combination of mechanism-based analysis and big data-based intelligent algorithm analysis; At the same time, it can verify the wired and wireless transmission performance of the operation and maintenance platform, and can provide strong help for the performance of the intelligent operation and maintenance platform.

It can be understood that the above specific description of the present invention is only used to illustrate the present invention, and is not limited to the technical solutions described in the embodiments of the present invention. Those of ordinary skill in the art should understand that the present invention can still be modified. Or equivalent replacement, in order to achieve the same technical effect; as long as the needs of use are met, all within the protection scope of the present invention.

Claims

An industrial sensor accelerated failure excitation intelligent operation and maintenance test platform is characterized in that it includes a measurement and control host, a data acquisition and control device, a pressure controller, a water tank, a water pump, a first relay assembly, a first air pipe assembly, and a first solenoid valve assembly. , The first pressure sensor clamp assembly, the first pressure sensor assembly, the first temperature sensor assembly, the first temperature sensor clamp assembly, the first flow sensor clamp assembly, the first outlet pipe assembly, the first flow sensor assembly, the first 2 Solenoid valve assembly, the first water inlet pipe assembly, the second relay assembly, the 11th relay, the first liquid level sensor assembly, the first liquid level sensor fixture assembly, the adjustable DC voltage source, the first material level sensor assembly, the first 1 Material level sensor fixture assembly and air source;

The measurement and control host, the adjustable DC voltage source, the first material level sensor assembly, the first liquid level sensor assembly, the second relay assembly, the eleventh relay, the first flow sensor assembly, the first temperature sensor assembly, and the first pressure sensor The signal transmission ports of the assembly, the first relay assembly and the pressure controller are respectively connected with the signal transmission ports of the data acquisition and control device;

The signal transmission port of the eleventh relay is connected to the signal transmission port of the water pump; the signal transmission port of the second relay assembly is connected to the signal transmission port of the second solenoid valve assembly; The solenoid valve assembly and the first water inlet pipe assembly are communicated with the water inlet of the first flow sensor assembly; the water outlet of the first flow sensor assembly is communicated with the water inlet of the water tank through the first water outlet pipe assembly; the water outlet of the water tank is connected to the water inlet of the water tank. The water inlet of the water pump is connected;

the first temperature sensor assembly is fixed on the first temperature sensor fixture assembly;

The signal transmission port of the first relay assembly is connected to the signal transmission port of the first solenoid valve assembly;

the first pressure sensor assembly is fixed on the first pressure sensor fixture assembly;

The air outlet of the pressure controller communicates with the air inlet of the first pressure sensor assembly through the first air pipe assembly and the first solenoid valve assembly;

The air outlet of the air source communicates with the air inlet of the pressure controller;

The adjustable DC voltage source provides power to the first material level sensor assembly, the first liquid level sensor assembly, the first flow sensor assembly, the first temperature sensor assembly and the first pressure sensor assembly, respectively.
The test platform according to claim 1, characterized in that: a high and low test box is further provided; the first pressure sensor fixture assembly, the first pressure sensor assembly, the first temperature sensor assembly, the first temperature sensor fixture assembly, The first flow sensor fixture assembly, the first flow sensor assembly, the first water inlet pipe assembly, the first liquid level sensor assembly, the first liquid level sensor clamp assembly, the first material level sensor assembly and the first material level sensor clamp The components are placed in the high and low temperature test chambers, and by changing the temperature and humidity of the environment where the sensors are located, the accelerated failure excitation test is performed on sensors such as pressure, temperature, flow, liquid level, and material level.
The test platform according to claim 1, characterized in that: a vibration table is further provided; the first pressure sensor fixture assembly, the first pressure sensor assembly, the first temperature sensor assembly, the first temperature sensor clamp assembly, the first 1 flow sensor fixture assembly, the first flow sensor assembly, the first water inlet pipe assembly, the first liquid level sensor assembly, the first liquid level sensor clamp assembly, the first material level sensor assembly and the first material level sensor clamp assembly They are placed on the vibrating table respectively, and by changing the direction and frequency of vibration of the sensor, the accelerated failure excitation test is carried out on the pressure, temperature, flow, liquid level, material level and other instruments.
The test platform according to any one of claims 1 to 3, wherein the data acquisition and control device comprises an RS485 communication interface, a first switch output interface component, a second switch output interface component, and an eleventh switch output interface Interface, analog output interface, Ethernet communication interface, the first analog input interface assembly, the second analog input interface assembly, the third analog input interface assembly, the fourth analog input interface assembly, the fifth analog input interface components.
test platform according to claim 4, is characterized in that:

The Ethernet communication interface is connected with the measurement and control host, the RS485 communication interface is connected with the pressure controller, and the eleventh switch output interface is connected with the eleventh relay.