Multifunctional ship sensor detection test bed control system based on PLC

Abstract

The invention discloses a multifunctional ship sensor detection test bed control system based on a PLC. The invention relates to the technical field of ship sensor detection, and solves the problems of low efficiency and poor detection precision of a traditional ship sensor detection method. The system comprises a ship sensor detection test bed upper computer operation unit, a main control system, a protocol converter and a lower computer sub-control system, an upper computer operation unit of the ship sensor detection test bed is connected with a main control system through the Ethernet, the main control system is connected with a protocol converter through a field bus, and the protocol converter is connected with a lower computer sub-control system through the Ethernet. The field to-be-tested sensors are respectively connected with the input and output terminals of the main control system; and the main control system adopts a PLC. According to the invention, the detection efficiency and detection precision of the ship sensor can be improved.

Description

Technical Field

[0001] The invention relates to the technical field of ship sensor detection, and in particular to a multifunctional ship sensor detection test bench control system based on PLC. Background Art

[0002] When testing and calibrating ship sensors, shipyards often use the method of debugging and calibrating individual sensors one by one, and rely on manual recording and calculation of the detected sensor data, which has problems such as poor working environment, low efficiency, and long cycle, which is not conducive to the precise and efficient development of shipyards. With the development of intelligent ships, the number of ship sensors is increasing, especially temperature and pressure sensors are widely used in ship engine room management and various large-scale operating equipment. The traditional sensor detection and calibration method has low efficiency and poor detection accuracy, which is difficult to meet the needs of batch maintenance work, and brings great maintenance difficulties to the repair of large intelligent ships.

[0003] Existing patents on PLC control systems for detection equipment are mainly applicable to the mechanical field. For example, CN107526326A provides a connector-based conduction withstand voltage detection control system. The patent-based PLC control system provides a channel for mutual communication and transmission of data and information, ensuring the smooth transmission of data and information. However, the invention is mainly used for connectors in the assembly of complete machines and has no applicability to the detection and control of ship sensor detection test benches. For example, CN203630573U, an instrument detection control system based on a PLC single-chip computer, is applicable to industries such as metallurgy, chemical industry, papermaking, and cement. Although it can detect sensors for temperature, flow, pressure, and liquid level, it is not suitable for the detection of internal sensors in ships in terms of function and structure. Therefore, it is necessary to propose a multifunctional ship sensor detection test bench control system based on PLC to solve the above problems. Summary of the invention

[0004] The invention provides a multifunctional ship sensor detection test bench control system based on PLC, so as to solve the problems of low efficiency and poor detection accuracy of traditional ship sensor detection methods.

[0005] The present invention provides a multifunctional ship sensor detection test bench control system based on PLC, comprising: a ship sensor detection test bench upper computer operation unit, a main control system, a protocol converter and a lower computer sub-control system; the ship sensor detection test bench upper computer operation unit is connected to the main control system through Ethernet, the main control system is connected to the protocol converter through a field bus, and the protocol converter is connected to the lower computer sub-control system through Ethernet; the field sensors to be tested are respectively connected to the input and output terminals of the main control system; the main control system adopts PLC;

[0006] The host computer operation unit of the ship sensor detection test bench includes: a data acquisition and test module, a PLC control module, a display and test module, a data report printing module and a function module;

[0007] The data acquisition and test module is used to collect test data of the on-site sensor to be tested through the main control interface;

[0008] The PLC control module is used to control the functional modules through the main control interface;

[0009] The display module is used to display the test data and perform curve analysis through the main control interface;

[0010] The data report printing module is used to print the test results through the main control interface;

[0011] The functional module includes a temperature control module and a pressure control module. The temperature control module is connected to the main control system through functional expansion hardware. Multiple temperature slots are controlled on the main control interface. Each temperature slot has a separate heating temperature value. The set value and actual temperature value of each temperature slot are displayed on the main control interface at the same time. The pressure control module provides air pressure through an external pressure generating device.

[0012] Furthermore, the main control system adopts Siemens PCS7 system, and the Siemens PCS7 system adopts fieldbus communication protocol; the protocol converter adopts PD gateway, and the PD gateway supports interconnection and conversion between fieldbus communication protocols.

[0013] Furthermore, the configuration method of the Siemens PCS7 system includes: installing the Siemens PCS7 system gateway file; and performing hardware configuration in the Siemens PCS7 system.

[0014] Furthermore, the hardware configuration in the Siemens PCS7 system is as follows:

[0015] Create a target project under the programming platform STEP7; add the name and serial number of the hardware device in the Siemens PCS7 system in the target project; add a control network and specify the gateway address; input the gateway address according to the reading of the gateway address encoder and specify the I / O address of the gateway; download the hardware configuration via Ethernet in the Siemens PCS7 system.

[0016] Furthermore, the CPU model is 1516-3PN / DP, the I / O modules are DI32×24VDC and DQ32×24VDC / 0.5AHF, and in the gateway address of the control network, the CPU node address is X1:192.168.0.1.

[0017] Furthermore, the main control interface includes a temperature sensor experiment button, a pressure sensor experiment button, a liquid level sensor experiment button, an experiment data query button, an experiment data collection button and a data printing button; the main control interface displays the working status of each sensor to be tested and the working mode of the system, and clicking the corresponding button switches to the corresponding configuration interface; there is an emergency stop button at the bottom of the main control interface. When the test bench is in an emergency situation, the operator clicks the emergency stop button and the test bench control system stops running; click the temperature sensor experiment button, the pressure sensor experiment button and the liquid level sensor experiment button to enter the temperature sensor test interface, the pressure sensor test interface and the liquid level sensor test interface respectively, and the temperature sensor test interface, the pressure sensor test interface and the liquid level sensor test interface display the input of sensor model and information, the actual value and reference value parameters obtained by the sensor test, the sensor test curve, the test data storage and the test report printing.

[0018] Furthermore, the main control system includes network 1 and network 2.

[0019] Initialization pulse, falling edge trigger a, internal flag register a output point, button normally open contact constitute network one, start jog button normally open contact, falling edge trigger b, internal flag register b output point, button normally open contact constitute network two; the PLC input signal of the main control system and the corresponding absolute address %I include: heating control button, %I0.0; pressure control button, %I0.1; liquid level control button, %I0.2; data acquisition button, %I0.3; print button, %I0.4; the temperature input signal of the sensor to be tested, %I 0.5; pressure input signal of the sensor to be tested, %I0.6; liquid level input signal of the sensor to be tested, %I0.7; the output signal of the main control system and the corresponding absolute address %Q include: temperature heating tank start and stop control signal, %Q0.0; pump start and stop control signal, %Q0.1; liquid level switch start and stop control signal, %Q0.2; experimental data acquisition signal, %Q0.3; printer start and stop signal, %Q0.4; temperature alarm indicator light, %Q0.5; pressure alarm indicator light, %Q0.6; liquid level alarm indicator light, %Q0.7.

[0020] Furthermore, the temperature control method of the main control system is as follows: after the PLC is powered on, the initialization pulse sends a single pulse, and the digital quantity 0 is transmitted through the falling edge trigger a instruction to reset the test bench signal; the start jog button is pressed, the normally open contact of the start jog button is energized, the normally open contact of the button is energized and self-locked, and the internal flag register a output point responds, and the data input status is moved into %I0.0, %I0.0 is energized, %Q0.0 is energized, and the initialization pulse point in network one is powered off.

[0021] Furthermore, the PLC control module writing process includes: finding the I / O variable creation button in the module properties, including: heating button, pressure button, data acquisition and printing button, outputting the corresponding work, and setting its corresponding address; using LAD language to write the test bench PLC control program.

[0022] Furthermore, the working process is as follows: start the whole system through the host computer operation unit of the ship sensor detection test bench; input the signal to the input signal source, including: voltage source, current source, heat source and special signal source; transmit the signal to the main control system to control the signal source; the wiring of the sensor under test is in the form of terminal blocks, and each module is controlled by the main control system; connect to the host computer operation unit of the ship sensor detection test bench through the data bus to collect and display the test data; output the data collected by each module and the analysis results in curves and compare them; automatically record data and print each test report; start the next group of sensor detection.

[0023] The present invention has the following beneficial effects: a multifunctional ship sensor detection test bench control system based on PLC of the present invention adopts PLC as the control core of the system to collect sensor data, and the control system has high reliability, strong anti-interference ability, complete functions and simple maintenance; and has the advantages of easy use, easy programming and easy automatic control in operation; the present invention can greatly improve the working environment of workers, and change the test of various sensors on board from scattered tests to batch tests, and change the ship operation into centralized test in the workshop, so it is not limited by the on-site conditions on board, and can move the process forward, that is, ensure the accuracy of simultaneous testing of multiple sensors, and improve the work efficiency of debugging workers. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solution of the present invention, the drawings required for use in the embodiments are briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0025] Figure 1 This is an overall diagram of a PLC-based multifunctional ship sensor detection test bench control system of the present invention;

[0026] Figure 2 It is the PLC control program variable table;

[0027] Figure 3 The test bench PLC control program is written in LAD language Figure 1 ;

[0028] Figure 4 The test bench PLC control program is written in LAD language Figure 2;

[0029] Figure 5 This is a schematic diagram of the main control interface;

[0030] Figure 6 It is the gas circuit diagram of the control system of the multifunctional ship sensor detection test bench based on PLC.

[0031] Illustrations: 1-pneumatic transmission pipeline unit; 2-main control system; 3-ship sensor detection test bench host computer operation unit; 4-data report printing device; 5-display and test device; 6-water source transmission pipeline unit; 7-initialization pulse; 8-falling edge trigger a8; 9-internal flag register a output point; 10-button normally open contact; 11-start jog button normally open contact; 12-falling edge trigger b12; 13-internal flag register b output point; 14-button normally open contact; 15-temperature sensor experiment button; 16-pressure sensor experiment button; 17-liquid level sensor experiment button; 18-experimental data query button; 19-experimental data acquisition button; 20-data printing button. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described in conjunction with the specific embodiments of the present invention and the corresponding drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. The technical solutions provided by the embodiments of the present invention are described in detail below in conjunction with the drawings.

[0033] The present invention starts from improving work efficiency and improving the working environment of workers, and develops a set of PLC-based multifunctional ship sensor detection test bench control system with simple operation, high technical content and stable equipment performance, which is applied to detect various sensors of equipment such as main engines and generators on board, changing the on-site detection on board to batch detection, and changing the on-board detection operation to centralized inspection in the workshop, which is not restricted by the on-site space, water supply and power supply on board. In this regard, the present invention designs a multifunctional ship sensor detection test bench control system based on PLC, which integrates sensor detection such as temperature and pressure sensors, can greatly improve the test and inspection environment, improve test efficiency and accuracy, and automatically record data and print various test reports.

[0034] See also Figures 1 to 6The present invention provides a multifunctional ship sensor detection test bench control system based on PLC, including: a ship sensor detection test bench upper computer operation unit 3, a main control system 2, a protocol converter and a lower computer sub-control system; the ship sensor detection test bench upper computer operation unit 3 is connected to the main control system 2 through Ethernet, the main control system 2 is connected to the protocol converter through a field bus, and the protocol converter is connected to the lower computer sub-control system through Ethernet; the on-site sensors to be tested are respectively connected to the input and output terminals of the main control system; the main control system adopts PLC. The main control system and the ship sensor detection test bench upper computer operation unit communicate data through the field bus to realize the monitoring of the parameters and status of the on-site equipment, which is convenient for remote control of the site through the ship sensor detection test bench upper computer operation unit.

[0035] The host computer operation unit of the ship sensor detection test bench includes: data acquisition and test module, PLC control module, display and test module, data report printing module and function module; the data acquisition and test module is used to collect the test data of the sensor to be tested on site through the main control interface; the PLC control module is used to control the function module through the main control interface; the display module is used to display and analyze the test data through the main control interface. Figure 1 The display and test device 5 performs display and test; the data report printing module is used to print the test results through the main control interface, specifically through Figure 1 The data report printing device 4 prints.

[0036] Specifically, the functional modules include a temperature control module and a pressure control module. The temperature control module is connected to the main control system through the functional expansion hardware. Multiple temperature tanks are controlled on the main control interface. Each temperature tank is individually set to a heating temperature value. The set value and actual temperature value of each temperature tank are simultaneously displayed on the main control interface. The pressure control module provides air pressure through the air pressure transmission pipeline unit 1 through an external pressure generating device. Figure 6 The two end points at the lower right center are connected to the pressure sensors to be tested. In addition, a liquid level control module is also included, and the liquid level control module controls the liquid level through the water source transmission pipeline unit 6.

[0037] The main control system adopts Siemens PCS7 system, which adopts fieldbus communication protocol; the protocol converter adopts PD gateway, which supports the interconnection and conversion between fieldbus communication protocols.

[0038] Specifically, the configuration method of the Siemens PCS7 system includes: installing the Siemens PCS7 system gateway file; selecting the CPU model; defining the input module; defining the output module; performing hardware configuration in the Siemens PCS7 system; downloading and defining the network port address. Performing hardware configuration in the Siemens PCS7 system. The method of performing hardware configuration in the Siemens PCS7 system is as follows: creating a target project under the programming platform STEP7; adding the name and serial number of the hardware device in the Siemens PCS7 system to the target project; adding a control network and specifying the gateway address; inputting the gateway address according to the reading of the gateway address encoder and specifying the gateway's I / O address; downloading the hardware configuration via Ethernet in the Siemens PCS7 system.

[0039] Specifically, the CPU model is 1516-3PN / DP, the input module: the model is defined as DI32×24VDC; the output module model is defined as DQ32×24VDC / 0.5AHF; the hardware configuration is completed and downloaded. Before downloading, define the network port address first, where the CPU network address is X1: 192.168.0.1 and insert it into the first network port.

[0040] Specifically, the present invention adopts TIA Portal WINCC, and the connection process between the main control interface and the PLC includes: creating an HMI main control interface; connecting the main control interface and the PLC; wherein the main control interface selects a SIMATIC-TP1200 panel, and the PLC uses the HMI for connection, wherein the connection process requires opening the control panel in the Win system, setting the access point in the PG / PC interface, and making the Win system consistent with the HMI access point.

[0041] The main control interface includes a temperature sensor experiment button 15, a pressure sensor experiment button 16, a liquid level sensor experiment button 17, an experiment data query button 18, an experiment data collection button 19 and a data printing button 20; the main control interface displays the working status of each sensor to be tested and the working mode of the system. Click the corresponding button to switch to the corresponding configuration interface; there is an emergency stop button at the bottom of the main control interface. When the test bench is in an emergency, the operator clicks the emergency stop button and the test bench control system stops running; click the temperature sensor experiment button, the pressure sensor experiment button and the liquid level sensor experiment button to enter the temperature sensor test interface, the pressure sensor test interface and the liquid level sensor test interface respectively. The temperature sensor test interface, the pressure sensor test interface and the liquid level sensor test interface display the input of sensor model and information, the actual value and reference value parameters obtained by the sensor test, the sensor test curve, the test data storage and the test report printing.

[0042] Specifically, the main control system includes network 1 and network 2. The initialization pulse 7, falling edge trigger a8, internal flag register a output point 9, and button normally open contact 10 constitute network 1, and the start jog button normally open contact 11, falling edge trigger b12, internal flag register b output point 13, and button normally open contact 14 constitute network 2. The PLC control program variable table is as follows: Figure 2 As shown, the PLC input signal of the main control system and the corresponding absolute address %I include: heating control button, %I0.0; pressure control button, %I0.1; liquid level control button, %I0.2; data acquisition button, %I0.3; print button, %I0.4; temperature input signal of the sensor to be tested, %I0.5; pressure input signal of the sensor to be tested, %I0.6; liquid level input signal of the sensor to be tested, %I0.7; the output signal of the main control system and the corresponding absolute address %Q include: temperature heating tank start and stop control signal, %Q0.0; pump start and stop control signal, %Q0.1; liquid level switch start and stop control signal, %Q0.2; experimental data acquisition signal, %Q0.3; printer start and stop signal, %Q0.4; temperature alarm indicator light, %Q0.5; pressure alarm indicator light, %Q0.6; liquid level alarm indicator light, %Q0.7.

[0043] Specifically, the temperature control method of the main control system is as follows: after the PLC is powered on, the initialization pulse sends a single pulse, and the digital quantity 0 is transmitted through the falling edge trigger a instruction to reset the test bench signal; the start jog button is pressed, the normally open contact of the start jog button is energized, the normally open contact of the button is energized and self-locked, and the internal flag register a output point responds, and the data input status is moved into %I0.0, %I0.0 is energized, %Q0.0 is energized, and the initialization pulse point in network one is powered off.

[0044] Specifically, the PLC control module writing process includes: finding the I / O variable creation button in the module properties, including: heating button, pressure button, data acquisition and printing button, outputting the corresponding work, and setting its corresponding address; using LAD language to write the test bench PLC control program.

[0045] Specifically, the working process of a PLC-based multifunctional ship sensor detection test bench control system provided by the present invention is as follows: start the entire system through the ship sensor detection test bench host computer operation unit; input signals to the input signal source, including: voltage source, current source, heat source and special signal source; transmit the signal to the main control system to control the signal source; the wiring of the tested sensor is in the form of terminal blocks, and each module is controlled by the main control system; connect to the ship sensor detection test bench host computer operation unit through the data bus to collect and display the test data; output the data collected by each module and the analysis results in curves and compare them; automatically record data and print each test report; start the next group of sensor detection.

[0046] It can be seen from the above embodiments that the multifunctional ship sensor detection test bench control system based on PLC of the present invention adopts Siemens PCS7 system as the main control system, connects the ship sensor detection test bench host computer operation unit to Siemens PCS7 system via Ethernet, and connects Siemens PCS7 system to PD gateway via field bus and configures in Siemens PCS7 system. Data communication is performed between Siemens PCS7 system and ship sensor detection test bench host computer operation unit via field bus to realize monitoring of field equipment parameters and status, so as to facilitate remote control of the field through ship sensor detection test bench host computer operation unit. The multifunctional ship sensor detection test bench control system based on PLC of the present invention adopts Siemens PCS7 system with high reliability, flexibility, generality, easy programming and convenient use as the control core, which can set heating temperature and pressure value for each sensor to be tested, control heating temperature and pressure, and collect, display, curve analyze and print various test data. The pressure, temperature setting value and actual temperature value of each sensor under test are simultaneously displayed on the main control interface of the upper computer operation unit of the ship sensor test bench. The heating control and pressure control are connected to the system through the function expansion hardware to achieve temperature and pressure regulation. The control system has a simple structure, high detection efficiency, stability and reliability, energy saving, no pollution to the environment, and can greatly improve the test environment, improve test efficiency and accuracy.

[0047] The above-described embodiments of the present invention do not limit the protection scope of the present invention.

Claims

1. A multifunctional ship sensor detection test bench control system based on PLC, characterized in that: include: The ship sensor detection test bench includes an upper computer operation unit, a main control system, a protocol converter and a lower computer sub-control system; the upper computer operation unit of the ship sensor detection test bench is connected to the main control system via Ethernet, the main control system is connected to the protocol converter via a field bus, and the protocol converter is connected to the lower computer sub-control system via Ethernet; the field sensors to be tested are respectively connected to the input and output terminals of the main control system; the main control system adopts PLC; The host computer operation unit of the ship sensor detection test bench includes: a data acquisition and test module, a PLC control module, a display and test module, a data report printing module and a function module; The data acquisition and test module is used to collect test data of the on-site sensor to be tested through the main control interface; The PLC control module is used to control the functional modules through the main control interface; The display module is used to display the test data and perform curve analysis through the main control interface; The data report printing module is used to print the test results through the main control interface; The functional module includes a temperature control module and a pressure control module. The temperature control module is connected to the main control system through functional expansion hardware. Multiple temperature slots are controlled on the main control interface. Each temperature slot has a separate heating temperature value. The set value and actual temperature value of each temperature slot are displayed on the main control interface at the same time. The pressure control module provides air pressure through an external pressure generating device.

2. A multifunctional ship sensor detection test bench control system based on PLC as claimed in claim 1, characterized in that: The main control system adopts Siemens PCS7 system, and the Siemens PCS7 system adopts field bus communication protocol; the protocol converter adopts PD gateway, and the PD gateway supports interconnection and conversion between field bus communication protocols.

3. A multifunctional ship sensor detection test bench control system based on PLC as claimed in claim 2, characterized in that: The configuration method of the Siemens PCS7 system includes: installing the Siemens PCS7 system gateway file; and performing hardware configuration in the Siemens PCS7 system.

4. A multifunctional ship sensor detection test bench control system based on PLC as claimed in claim 3, characterized in that: The hardware configuration in Siemens PCS7 system is as follows: Create a target project under the programming platform STEP7; add the name and serial number of the hardware device in the Siemens PCS7 system in the target project; add a control network and specify the gateway address; input the gateway address according to the reading of the gateway address encoder and specify the I / O address of the gateway; download the hardware configuration via Ethernet in the Siemens PCS7 system.

5. A multifunctional ship sensor detection test bench control system based on PLC as claimed in claim 4, characterized in that: The CPU model is 1516-3PN / DP, the I / O modules are DI32×24VDC and DQ32×24VDC / 0.5AHF, and in the gateway address of the control network, the CPU node address is X1: 192.168.0.

1.

6. A multifunctional ship sensor detection test bench control system based on PLC as claimed in claim 5, characterized in that: The main control interface includes a temperature sensor experiment button, a pressure sensor experiment button, a liquid level sensor experiment button, an experiment data query button, an experiment data collection button and a data printing button; the main control interface displays the working status of each sensor to be tested and the working mode of the system, and clicking the corresponding button switches to the corresponding configuration interface; there is an emergency stop button at the bottom of the main control interface. When the test bench is in an emergency, the operator clicks the emergency stop button and the test bench control system stops running; click the temperature sensor experiment button, the pressure sensor experiment button, and the liquid level sensor experiment button to enter the temperature sensor test interface, the pressure sensor test interface and the liquid level sensor test interface respectively, and the temperature sensor test interface, the pressure sensor test interface and the liquid level sensor test interface display the input of sensor model and information, the actual value and reference value parameters obtained by the sensor test, the sensor test curve, the test data storage and the test report printing.

7. A multifunctional ship sensor detection test bench control system based on PLC as claimed in claim 6, characterized in that: The main control system includes network 1 and network 2. Initialization pulse, falling edge trigger a, internal flag register a output point, button normally open contact constitute network one, start jog button normally open contact, falling edge trigger b, internal flag register b output point, button normally open contact constitute network two; The PLC input signals of the main control system and the corresponding absolute addresses %I include: heating control button, %I0.0; pressure control button, %I0.1; liquid level control button, %I0.2; data acquisition button, %I0.3; print button, %I0.4; temperature input signal of the sensor to be tested, %I0.5; pressure input signal of the sensor to be tested, %I0.6; liquid level input signal of the sensor to be tested, %I0.7; the output signals of the main control system and the corresponding absolute addresses %Q include: temperature heating tank start and stop control signal, %Q0.0; pump start and stop control signal, %Q0.1; liquid level switch start and stop control signal, %Q0.2; experimental data acquisition signal, %Q0.3; printer start and stop signal, %Q0.4; temperature alarm indicator light, %Q0.5; pressure alarm indicator light, %Q0.6; liquid level alarm indicator light, %Q0.

7.

8. A multifunctional ship sensor detection test bench control system based on PLC as claimed in claim 7, characterized in that: The temperature control method of the main control system is as follows: After the PLC is powered on, the initialization pulse sends a single pulse, and the digital quantity 0 is transmitted through the falling edge trigger a instruction to reset the test bench signal; press the start jog button, the normally open contact of the start jog button is energized, the normally open contact of the button is energized and self-locked, and the internal flag register a output point responds, and the data input status is moved into %I0.0, %I0.0 is energized, %Q0.0 is energized, and the initialization pulse point in network one is powered off.

9. A multifunctional ship sensor detection test bench control system based on PLC as claimed in claim 8, characterized in that: The PLC control module writing process includes: finding the I / O variable creation button in the module properties, including: heating button, pressure button, data acquisition and printing button, outputting the corresponding work, and setting its corresponding address; using LAD language to write the test bench PLC control program.

10. A multifunctional ship sensor detection test bench control system based on PLC as claimed in claim 9, characterized in that: The workflow is as follows: start the whole system through the host computer operation unit of the ship sensor detection test bench; Input signals to input signal sources, including voltage source, current source, heat source and special signal source; transmit signals to the main control system to control the signal source; The wiring of the sensor under test is in the form of a terminal, and each module is controlled by the main control system; it is connected to the host computer operation unit of the ship sensor detection test bench through the data bus to collect and display the test data; the data collected by each module and the analysis results are output as curves and compared; Automatically record data and print each test report; start the next set of sensor detection.

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