Tester for electrical aviation plug of bogie of motor train unit

Abstract

A tester for an electrical aviation plug of a bogie of a motor train unit relates to the technical field of electrical detection and comprises a box body and a test unit installed in the box body. The test unit comprises an upper computer, a multi-channel switching board card, an insulation tester and a resistance tester, a control pin of the upper computer is electrically connected with the multi-channel switching board card, the multi-channel switching board card is used for being connected with an aviation plug to be tested, and functional pins of the multi-channel switching board card are electrically connected with the insulation tester and the resistance tester respectively; the output pins of the insulation tester and the resistance tester are electrically connected with the input pin of the upper computer through a data bus; the power input ends of the upper computer, the multi-channel switching board card, the insulation tester and the resistance tester are electrically connected with an external power supply; the method is used for solving the problems of tedious maintenance mode and long test time in the prior art.

Description

Technical Field

[0001] The utility model relates to the field of electrical testing technology, specifically to a tester for electrical aviation plugs of EMU bogies. Background Technology

[0002] With the rapid development of high-speed rail technology and the continuous increase in train speed, various electrical sensors are increasingly widely used in railway train systems. As an important component of the electrical circuit of train bogies, aviation plugs are used in components such as motor shaft temperature gear sensors, instability sensors, speed sensors, and fuse-type temperature sensors. Therefore, aviation plugs play an irreplaceable role in train safety and operational efficiency.

[0003] However, during use, the bogie aviation plug is prone to reduced conductivity and insulation due to environmental temperature and humidity, wear and contamination during operation, etc., which can lead to abnormal bogie function and affect driving safety.

[0004] According to the current standards for railway train maintenance, it is necessary to periodically conduct continuity tests, internal resistance tests, and insulation tests on the output aviation plugs of motor shaft temperature gear sensors, instability sensors, speed sensors, and fusible temperature sensors on bogies of models CR300AF, CR400AF, CH2A / 2G, and CH380A.

[0005] The current maintenance method mainly uses a variety of testing equipment to conduct continuity tests, internal resistance tests and insulation tests on the aviation plug in sequence. This results in problems such as cumbersome operation, incomplete test items, need for manual calculation and processing of maintenance data, long operation time, large investment of energy, and large error in data results during field use.

[0006] Therefore, we propose a tester that can comprehensively complete aviation plug testing with a short testing time. Utility Model Content

[0007] The purpose of this utility model is to provide a tester for electrical aviation plugs of EMU bogies, which solves the problems of cumbersome maintenance methods and long testing time in the current process.

[0008] This utility model is achieved through the following technical solution:

[0009] A tester for electrical aviation connectors on EMU bogies includes a housing and a test unit installed inside the housing. The test unit includes a host computer, a multi-channel switching board, an insulation tester, and a resistance tester. The control pins of the host computer are electrically connected to the multi-channel switching board, which is used to connect the aviation connector under test. The function pins of the multi-channel switching board are electrically connected to the insulation tester and the resistance tester, respectively. The output pins of the insulation tester and the resistance tester are electrically connected to the input pins of the host computer via a data bus. The power input terminals of the host computer, the multi-channel switching board, the insulation tester, and the resistance tester are all electrically connected to an external power supply.

[0010] Furthermore, this tester also includes a UPS power supply, the power supply terminal of which is electrically connected to the host computer.

[0011] Furthermore, the bottom of the box is equipped with multiple casters.

[0012] Furthermore, a cable reel is provided at the bottom of the housing.

[0013] Furthermore, the host computer includes an industrial computer host, a screen, a mouse, and a keyboard, wherein the control pins of the industrial computer host are electrically connected to a multi-channel switching board, the display pins of the industrial computer host are electrically connected to the screen, and the input pins of the industrial computer host are electrically connected to the mouse, keyboard, and data bus, respectively.

[0014] Furthermore, the output pins of the host computer are connected to a printer.

[0015] Furthermore, the control pins of the host computer are also connected to a temperature and humidity sensor, and the output pins of the temperature and humidity sensor are connected to the host computer via a data bus.

[0016] Furthermore, short-circuit protectors are provided between the multifunctional functional board and the insulation tester, as well as between the board and the resistance tester.

[0017] Furthermore, the insulation tester is model Nanjing Minsheng MS2675PN-I B; the resistance tester is model Changzhou Tonghui Electronics TH2516.

[0018] The technical solution of this utility model has at least the following advantages and beneficial effects:

[0019] This utility model discloses a tester for electrical aviation plugs of EMU bogies. Through the integrated test unit, the continuity test, internal resistance test and insulation test of aviation plugs can be completed on a single host, thereby effectively simplifying the test process, improving test efficiency and reducing test time.

[0020] In addition, the casters allow the chamber to move freely, thus improving the practicality of the tester; while the temperature and humidity sensor can detect the temperature and humidity inside the chamber, thereby monitoring whether the tester is working properly and improving the safety of the tester during use. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of a circuit structure according to the present invention;

[0022] Figure 2 This is a schematic diagram of the host computer structure of this utility model;

[0023] Figure 3 This is a schematic diagram of the UPS power supply structure of this utility model.

[0024] Reference numerals in the attached diagram: 1. Enclosure; 2. Host computer; 3. Multi-channel switching board; 4. Insulation tester; 5. Resistance tester; 6. Data bus; 7. UPS power supply; 8. Casters; 9. Cable reel; 10. Printer; 11. Temperature and humidity sensor; 12. Aviation connector under test. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0026] Example 1

[0027] like Figures 1-3 The diagram shows a tester for an electrical aviation connector on a high-speed train bogie, comprising a housing 1 and a test unit installed within the housing 1. The test unit includes a host computer 2, a multi-channel switching board 3, an insulation tester 4, and a resistance tester 5. The control pins of the host computer 2 are electrically connected to the multi-channel switching board 3, which is used to connect the aviation connector 12 to be tested. The function pins of the multi-channel switching board 3 are electrically connected to the insulation tester 4 and the resistance tester 5, respectively. The output pins of the insulation tester 4 and the resistance tester 5 are electrically connected to the input pins of the host computer 2 via a data bus 6.

[0028] The host computer 2 serves as the control center for the tester, controlling whether the multi-channel switching board 3 initiates the detection of the aviation plugs and receiving test result data from the insulation tester 4 and the resistance tester 5. The multi-channel switching board 3 has multiple input channels, allowing for flexible selection of the type of aviation plug to be tested. This means that multiple aviation plugs can be inserted into the multi-channel switching board 3 simultaneously, and these multiple aviation plugs can be used by different sensors in the bogie of the EMU. Furthermore, the board has an automatic switching function, controlled by the host computer 2, which automatically switches to the next test channel after each test, reducing manual operation steps.

[0029] In addition, the multi-channel switching board 3 is a self-made PCB board, mainly composed of 20 switching channels and two buses, A and B. The 20 switching channels are used to connect to the aviation plugs. Then, according to the signal sent by the host computer 2, different channels are switched to connect to the A and B buses. The A bus is electrically connected to the insulation tester 4, and the B bus is electrically connected to the resistance tester 5, so as to realize the testing of multiple aviation plugs separately.

[0030] Insulation tester 4 and resistance tester 5 employ precise digital measurement technology, both capable of displaying test results in real time. Insulation tester 4 is used to detect the insulation values ​​of each aviation plug under different connection states in its respective test program between the pins and the aviation plug shell, ground, and insulating shield. Resistance tester 5 is used to measure the resistance values ​​between each pin of each aviation plug under different connection states in its respective test program to determine whether there is continuity.

[0031] The power input terminals of the host computer 2, multi-channel switching board 3, insulation tester 4, and resistance tester 5 are all electrically connected to an external power source.

[0032] In addition, this tester also includes a UPS power supply 7. The power supply terminal of the UPS power supply 7 is electrically connected to the host computer 2. The UPS power supply 7 is a backup power supply and can switch the power supply mode in time when the external power supply suddenly stops, so as to maintain the continuous operation of the host computer 2 and prevent data loss caused by power outage during the test.

[0033] Example 2

[0034] As an example, the bottom of the box 1 is provided with a plurality of casters 8, the optimal number of which is four, and the four casters 8 are respectively located at the four corners of the bottom surface of the box 1. The four casters 8 not only meet the movement needs of the box 1, but also effectively distribute the force on each caster 8, so that the box 1 remains stable when moving.

[0035] In addition, a cable reel 9 is provided at the bottom of the housing 1. The cable reel 9 is used to wind the power cord that is connected to the external power source. It serves to adjust the length of the power cord. Since the tester needs to be moved to different locations and the location of the sockets in each location is different, adjusting the length of the power cord by the cable reel 9 can ensure that the tester can be connected to the power source in different application scenarios without causing the power cord to become tangled or knotted.

[0036] In addition, at least three telescopic support rods can be installed at the bottom of the housing 1. The control ends of the multiple telescopic support rods are electrically connected to the host computer 2. The telescopic ends of the telescopic support rods extend to the ground and lift the housing 1, causing the casters 8 to be suspended in the air. This allows the housing 1, i.e. the tester, to remain stably in place, preventing the housing 1 from moving randomly during the test due to the casters 8, and maintaining the stability of the tester during the test process.

[0037] Example 3

[0038] In one embodiment, the host computer 2 includes an industrial computer host, a screen, a mouse, and a keyboard. The control pins of the industrial computer host are electrically connected to the multi-channel switching board 3, the display pins of the industrial computer host are electrically connected to the screen, and the input pins of the industrial computer host are electrically connected to the mouse, keyboard, and data bus 6, respectively. The test start-up and test sequence of the multi-channel switching board 3 are controlled by the industrial computer host. The mouse and keyboard are input devices of the industrial computer host, used to send control commands to the industrial computer host. The data bus 6 outputs the test result data of the insulation tester 4 and the resistance tester 5 to the industrial computer host, and after analysis by the CPU of the industrial computer host, it is displayed on the screen.

[0039] In addition, the output pins of the host computer 2 are connected to the printer 10. Since the multi-channel test board can complete the test tasks of multiple aviation plugs and there is a lot of test data, it may not be fully displayed on the screen. Therefore, the test data can be printed onto paper by the printer 10 for easy reference by staff.

[0040] In addition, the control pin of the host computer 2 is also connected to a temperature and humidity sensor 11, and the output pin of the temperature and humidity sensor 11 is connected to the host computer 2 through the data bus 6. The temperature and humidity sensor 11 can detect the temperature and humidity inside the chamber 1, thereby monitoring whether the working status of the tester is normal and improving the safety of the tester during use.

[0041] As needed, short-circuit protectors are provided between the multi-functional board and the insulation tester 4, as well as between the insulation tester 4 and the resistance tester 5, which can improve the safety of the insulation tester 4 and the resistance tester 5 during the testing process.

[0042] When implementing the tester for the electrical aviation plug of the EMU bogie described in the present utility model, various aviation plugs are inserted into the multi-channel switching board 3, and then the staff determines the test sequence of one or more aviation plugs to be detected on the upper computer 2. The upper computer 2 will send corresponding control signals to the multi-channel switching board 3, and the multi-channel switching board 3 controls the corresponding aviation plugs to be detected by the insulation tester 4 and the resistance tester 5. The test results of the insulation tester 4 and the resistance tester 5 are transmitted back to the upper computer 2 through the data bus 6;

[0043] It should be noted that according to the analysis of the current regulations for the internal resistance test and maintenance of aviation plugs, in the test of aviation plugs, the pin pairs of 1-2, 3-4, 1-3, 2-3, 1-4, and 2-4 need to be tested for continuity. The requirement is that the test resistance is less than 10Ω to be qualified, and the pin pairs of 1-2 and 3-4 are required to be less than ३००mΩ to be qualified; the upper computer 2 selects the channels in the corresponding multi-channel switching board 3 according to different aviation plugs, connects the 1-2 core wire harness to the resistance tester 5, and the software starts the test of the resistance tester 5 and reads the test value to judge whether it is qualified according to the test requirements;

[0044] And according to the analysis of the current regulations for the insulation detection and maintenance of aviation plugs, in the aviation plug, the pins 1 to 7 need to be respectively grounded to the exposed metal surface of the bogie; the pins 1 to 7 need to be respectively grounded to the aviation plug housing; the pins 5 to 7 need to be respectively tested for insulation withstand voltage with respect to the pin 1, and the requirement is that the insulation withstand voltage resistance is greater than 10MΩ. The upper computer 2 selects the channels in the corresponding multi-channel switching board 3 according to different aviation plugs, connects the test pins to the insulation tester 4, and the upper computer 2 selects a voltage of 500V or 1000V to start the insulation test and reads the test value according to the test item to be performed, and judges whether it is qualified according to the test requirements.

[0045] In addition, the model of the insulation tester 4 is Minsheng MS2675PN-IB; the model of the resistance tester 5 is Tonghui Electronics TH2516.

[0046] The above is only the preferred embodiment of the present utility model and is not used to limit the present utility model. For those skilled in the art, the present utility model can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A tester for electrical aviation connectors of EMU bogies, characterized in that: The test unit includes a housing (1) and a test unit installed inside the housing (1). The test unit includes a host computer (2), a multi-channel switching board (3), an insulation tester (4), and a resistance tester (5). The control pins of the host computer (2) are electrically connected to the multi-channel switching board (3). The multi-channel switching board (3) is used to connect the aviation plug (12) to be tested. The function pins of the multi-channel switching board (3) are electrically connected to the insulation tester (4) and the resistance tester (5), respectively. The output pins of the insulation tester (4) and the resistance tester (5) are electrically connected to the input pins of the host computer (2) through a data bus (6). The power input terminals of the host computer (2), the multi-channel switching board (3), the insulation tester (4), and the resistance tester (5) are all electrically connected to an external power supply.

2. The tester for electrical aviation connectors of EMU bogies according to claim 1, characterized in that: This tester also includes a UPS power supply (7), the power supply terminal of which is electrically connected to the host computer (2).

3. The tester for electrical aviation connectors of EMU bogies according to claim 1, characterized in that: The bottom of the box (1) is provided with multiple casters (8).

4. The tester for electrical aviation connectors of EMU bogies according to claim 1, characterized in that: The bottom of the housing (1) is provided with a reel (9).

5. The tester for electrical aviation connectors of EMU bogies according to claim 1, characterized in that: The host computer (2) includes an industrial computer host, a screen, a mouse and a keyboard. The control pins of the industrial computer host are electrically connected to the multi-channel switching board (3), the display pins of the industrial computer host are electrically connected to the screen, and the input pins of the industrial computer host are electrically connected to the mouse, the keyboard and the data bus (6) respectively.

6. The tester for electrical aviation connectors of EMU bogies according to claim 1, characterized in that: The output pins of the host computer (2) are connected to the printer (10).

7. The tester for electrical aviation connectors of EMU bogies according to claim 1, characterized in that: The control pin of the host computer (2) is also connected to a temperature and humidity sensor (11), and the output pin of the temperature and humidity sensor (11) is connected to the host computer (2) through a data bus (6).

8. The tester for electrical aviation connectors of EMU bogies according to claim 1, characterized in that: The multi-channel switching board (3) is equipped with short-circuit protectors between the insulation tester (4) and the resistance tester (5).

9. The tester for electrical aviation connectors of EMU bogies according to claim 1, characterized in that: The insulation tester (4) is model Nanjing Minsheng MS2675PN-IB; the resistance tester (5) is model Changzhou Tonghui Electronics TH2516.

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