A redundant bus test system and method

Abstract

The application relates to a redundant bus test system and method. The system comprises a support assembly and an industrial personal computer (IPC) placed on the support assembly. The support assembly comprises a base, a display module and an interface module arranged on the surface of the base, and a resistance measurement module arranged in the base. The interface module comprises at least four groups of bus interfaces. The IPC is communicatively connected with the display module and the resistance measurement module. The IPC is loaded with a test control module and software, which are used for controlling the resistance measurement module to perform measurement and for human-computer interaction. The display module is used for displaying the working voltage and current of the resistance measurement module. The interface module is used for connecting a cable to be measured. The resistance measurement module is used for measuring the resistance value of the cable to be measured, judging the conduction condition of the cable to be measured according to the resistance value, and feeding back the judgment result to the IPC. Compared with the prior art, the application has the advantages of reducing the probability of human error, improving the test efficiency, and the like.

Description

Technical Field

[0001] This invention relates to the field of onboard equipment testing technology for train control systems, and in particular to a redundant bus testing system and method. Background Technology

[0002] The key units of the 300T vehicle-mounted equipment adopt a dual-set configuration (some units are single-set), divided into A and B series, switched via redundant switches. The system includes two MVB buses (MVB-S and MVB-T) and one Profibus bus. Cables between units on the same bus are serially connected, linking the entire bus through two interconnected DB9 interfaces on each unit. Since the cables between A / B series units and shared units on the three buses are currently serially connected, a failure in a cable or connector will affect both series. In some cases, a faulty unit that is not powered on may also affect units in the other series. Therefore, a redundant bus connection optimization design scheme is researched and developed to solve the problem of both series becoming unavailable due to the above situations.

[0003] When using redundant bus connections, to ensure that each bus forms a complete path between two terminals, the MVB or Profibus cables connecting each module on that path must be functionally intact and free from breaks. Currently, manual verification is used, employing a multimeter or buzzer to check each cable individually. This method is inefficient, slow, and prone to missed or incorrect checks. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the prior art, such as low efficiency, slow speed, and susceptibility to missed or false detections, by providing a redundant bus testing system and method.

[0005] The objective of this invention can be achieved through the following technical solutions:

[0006] According to a first aspect of the present invention, a redundant bus testing system is provided, comprising a support assembly and an industrial control integrated computer placed on the support assembly. The support assembly includes a base, a display module and an interface module disposed on the surface of the base, and a resistance measurement module disposed inside the base. The interface module includes at least four bus interfaces. The industrial control integrated computer is communicatively connected to the display module and the resistance measurement module, respectively. The industrial control integrated computer is equipped with a test control module and software for controlling the resistance measurement module to perform measurements and for human-machine interaction. The display module is used to display the operating voltage and current of the resistance measurement module. The interface module is used to connect the cable under test. The resistance measurement module is used to measure the resistance value of the cable under test, determine the continuity of the cable under test based on the resistance value, and feed back the determination result to the industrial control integrated computer.

[0007] As a preferred technical solution, the base is also equipped with a voltage measurement module. The voltage measurement module is communicatively connected to the industrial control computer and is used to measure the current voltage value of the resistance measurement module and itself, and to feed the measurement result back to the industrial control computer.

[0008] As a preferred technical solution, the base is also provided with a guide rail, which is used to fix the resistance measurement module and the voltage measurement module.

[0009] As a preferred technical solution, the industrial control integrated computer is connected to the resistance measurement module and the voltage measurement module respectively via RS485 signal lines.

[0010] As a preferred technical solution, the interface module includes multiple DB9 interfaces.

[0011] As a preferred technical solution, the interface module can simultaneously connect four sets of cables: MVB-Sa, MVB-Sb, MVB-T, and Profibus-S.

[0012] As a preferred technical solution, the base is equipped with a main power switch button.

[0013] As a preferred technical solution, the industrial control all-in-one computer is connected to the base via an adjustable fixed bracket.

[0014] As a preferred technical solution, the support assembly further includes a folding handle, which is fixedly connected to the side wall of the base.

[0015] According to a second aspect of the present invention, a redundant bus testing method is provided. The method is implemented based on the system described above and includes the following steps: fixing the support component; running the test control module and software through the industrial control integrated computer, and maintaining the test control module and software connected to the resistance measurement module; connecting the cable under test to the interface module; controlling the resistance measurement module through the industrial control integrated computer to measure the resistance value of the cable under test, determining the continuity of the cable under test based on the resistance value, and feeding back the determination result to the industrial control integrated computer; the display module displays the operating voltage and current of the resistance measurement module in real time; and generating a test report.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. This invention combines a resistance measurement module, a test control module, and software to achieve a redundant bus test method with hardware and software cooperation. The display module can display the working voltage and current of the resistance measurement module in real time, and the test results can be intuitively obtained through the display screen of the industrial control all-in-one computer, i.e., the interactive interface. This can effectively reduce the probability of human error and reduce the occurrence of missed or incorrect detections.

[0018] 2. In this invention, the interface module includes at least four bus interfaces, which means it can simultaneously test four sets of cables: MVB-Sa, MVB-Sb, MVB-T, and Profibus-S, facilitating batch operations and effectively improving testing efficiency.

[0019] 3. In this invention, the display module can display the working voltage and current of the resistance measurement module in real time. When a certain group of cables fails to be tested, the industrial control all-in-one computer can perform human-machine interaction through the display screen and present the fault point so as to accurately locate the fault, replace the cable in time and retest, and improve the testing efficiency.

[0020] 4. This invention adopts a modular design, which facilitates fault diagnosis and component replacement, reduces maintenance costs, and supports test data backtracking and tracing, saving test data for subsequent cable maintenance and traceability.

[0021] 5. The testing method provided by this invention is based on the cooperation of the measurement control module and the resistance measurement module to complete the automated testing process. Moreover, one operator can perform tests on multiple sets of cables or multiple cables at the same time, which can greatly improve the testing speed. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of the test system in an embodiment of the present invention;

[0023] Figure 2 This is a schematic diagram of the back structure of the test system in an embodiment of the present invention;

[0024] Figure 3 This is a side view of the test system in an embodiment of the present invention;

[0025] Figure 4 This is a schematic diagram of the internal structure of the test system base in an embodiment of the present invention;

[0026] The components are as follows: 101. Industrial control all-in-one computer; 102. RS485 signal cable; 103. LCD display screen; 104. DB9 interface; 105. Operation panel; 106. Base; 107. Main power switch button; 108. Cable outlet; 109. Industrial control computer power cord; 201. 220V power cord outlet; 202. Adjustable fixing bracket; 301. Folding handle; 401. Guide rail; 402. First resistance measurement module; 403. Second resistance measurement module; 404. Third resistance measurement module; 405. Fourth resistance measurement module; 406. Fifth resistance measurement module; 407. Sixth resistance measurement module; 408. Seventh resistance measurement module; 409. Eighth resistance measurement module; 410. Voltage measurement module. Detailed Implementation

[0027] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. These embodiments are based on the technical solution of the present invention and provide detailed implementation methods and specific operating procedures. However, the scope of protection of the present invention is not limited to the following embodiments.

[0028] Example

[0029] This invention provides a redundant bus testing system for a CTCS-300T vehicle-mounted host, comprising a support assembly and an industrial control integrated computer mounted on the support assembly. The support assembly includes a base, a display module and an interface module disposed on the surface of the base, and a resistance measurement module disposed inside the base. The interface module includes at least four bus interfaces. The industrial control integrated computer is communicatively connected to the display module and the resistance measurement module. The industrial control integrated computer carries a test control module and software for controlling the resistance measurement module to perform measurements and for human-machine interaction. The display module displays the operating voltage and current of the resistance measurement module. The interface module connects to the cable under test. The resistance measurement module measures the resistance value of the cable under test, determines the continuity of the cable based on the resistance value, and feeds back the determination result to the industrial control integrated computer. The test control module and software include CTCS-300T vehicle-mounted host redundant bus testing software. The communication connection is achieved using an RS485 signal line. The display module can be an LCD screen, and the interface module can include multiple DB9 interfaces.

[0030] Figures 1-3 This diagram shows one possible overall structure of the testing system and its corresponding rear and side views. Figure 4 This illustrates one possible structural arrangement within the support component. For example... Figure 1 As shown, the test system includes an industrial control all-in-one computer 101, an RS485 signal cable 102, an LCD display screen 103, a DB9 interface 104, an operation panel 105, a base 106, a main power switch button 107, a cable outlet 108, and an industrial control computer power cord 109; Figure 2 As shown, the test system also includes a 220V power cord outlet 201 and an adjustable mounting bracket 202; Figure 3 As shown, the test system also includes a folding handle 301; as Figure 4 As shown, the base contains a guide rail 401 and a first resistance measurement module 402 to an eighth resistance measurement module 409 and a voltage measurement module 410, which are fixedly connected to the guide rail 401. The positions and connections of the components are as follows:

[0031] The industrial control all-in-one computer 101 is mounted on the base 106 via an adjustable fixing bracket 202, and is connected to each resistance measurement module and voltage measurement module 410 via RS485 signal lines 102. The LCD screen 103 is mounted on one side of the surface of the base 106. Four DB9 interfaces 104 are located on the operation panel 105, which is supported by the base 106. The main power switch button 107 and the cable outlet 108 are mounted on the other side of the surface of the base 106. One end of the industrial control computer power cord 109 is connected to the industrial control all-in-one computer 101, and the other end passes through the cable outlet 108 and the 220V power cord outlet 201 in sequence. The folding handle 301 is fixedly connected to the side wall of the base 106, which can be one side or multiple sides. The base 106 has three rows of guide rails 401 inside. Two rows of guide rails 401 are fixedly connected to three resistance measurement modules (first resistance measurement module 402 to sixth resistance measurement module 407) respectively. The third row of guide rails 401 is fixedly connected to two resistance measurement modules (seventh resistance measurement module 408 to eighth resistance measurement module 409) and voltage measurement module 410.

[0032] The functions of each component of the test system are as follows:

[0033] Industrial Control All-in-One PC 101: The Industrial Control All-in-One PC 101 is equipped with CTCS-300T vehicle-mounted host redundant bus test software. By running the CTCS-300T vehicle-mounted host redundant bus test software, the Industrial Control All-in-One PC 101 controls the first resistance measurement module 402 to the eighth resistance measurement module 409 and the voltage measurement module 410 to perform measurements. Through its built-in display, users can interact with the system and obtain information on the test status of the cable under test.

[0034] RS485 signal line 102: Used to realize information exchange between the industrial control all-in-one computer 101 and each resistance measurement module and voltage measurement module 410.

[0035] LCD screen 103: Used to display the operating voltage and current of each resistance measurement module and voltage measurement module 410.

[0036] DB9 Interface 104: Used to connect the cable under test, including MVB and Profibus cables.

[0037] Control panel 105: The main working platform for operators.

[0038] Base 106: It houses the guide rail 401, various resistance measurement modules and voltage measurement modules 410, and serves to support the entire test system.

[0039] Main power switch button 107: Used to control the on and off of the 220V working power supply.

[0040] Outlet 108: Outlet of power adapter and industrial control computer power cord 109.

[0041] Industrial PC power cord 109: Used to power the industrial control all-in-one computer 101.

[0042] 220V power cord outlet 201: Outlet for power adapter and AC 220V mains power cord.

[0043] Adjustable mounting bracket 202: used to fix the industrial control all-in-one computer 101, and the height of the industrial control all-in-one computer 101 can be flexibly adjusted according to the height of the operator.

[0044] Folding Handle 301: Portable handle for easy carrying.

[0045] Guide rail 401: Fixes the resistance measurement module and voltage measurement module.

[0046] The first resistance measurement module 402 to the eighth resistance measurement module 409 are used to measure the resistance value of the cable under test (such as MVB cable and Profibus), determine the continuity of the cable under test based on the resistance value, and feed back the judgment result to the industrial control all-in-one computer 101.

[0047] Voltage measurement module 410: Used to measure the current voltage value of each resistance measurement module and itself, and feed it back to the industrial control all-in-one computer 101.

[0048] The working principle of the system provided in this embodiment is as follows:

[0049] 1. Equipment preparation: Before use, the operator must confirm that the 220V power supply of the system is connected normally, open the CTCS-300T vehicle host redundant bus test software on the industrial control all-in-one computer 101, and ensure that the software and each resistance measurement module are connected.

[0050] 2. Install the cable under test: Connect the cable under test to the corresponding DB9 interface 104 according to the diagram on the operation panel 105.

[0051] 3. Start the test: The operator clicks the bus test control area on the software panel and selects the corresponding test item button to start the test.

[0052] 4. Real-time monitoring and feedback: The test process, the test results of each cable, and the overall test results can be observed in real time on the main interface of the 101 industrial control computer.

[0053] 5. Generate test report: Save the test report to the preset file directory.

[0054] Furthermore, based on the aforementioned testing system, this embodiment provides a redundancy bus testing method for the CTCS-300T vehicle-mounted host, specifically including: after fixing the base 106, running the CTCS-300T vehicle-mounted host redundancy bus testing software through the industrial control all-in-one computer 101, and maintaining the connection between the software and each resistance measurement module; next, connecting the cable under test to the corresponding DB9 interface 104; controlling each resistance measurement module through the industrial control all-in-one computer 101 to measure the resistance value of the cable under test, judging the continuity of the cable under test based on the resistance value, and feeding back the judgment result to the industrial control all-in-one computer 101; the LCD screen 103 can display the operating voltage and current of the resistance measurement module in real time; finally, generating a test report based on the monitoring results.

[0055] The preferred embodiments of the present invention have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of the present invention without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of the present invention through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.

Claims

1. A redundant bus testing system, characterized in that, The system includes a support assembly and an industrial control all-in-one computer placed on the support assembly. The support assembly includes a base, a display module and an interface module disposed on the surface of the base, and a resistance measurement module disposed inside the base. The interface module includes at least four bus interfaces. The industrial control all-in-one computer is communicatively connected to the display module and the resistance measurement module, respectively. The industrial control all-in-one computer is equipped with a test control module and software, which are used to control the resistance measurement module to perform measurements and to perform human-machine interaction; The display module is used to display the operating voltage and current of the resistance measurement module; The interface module is used to connect the cable to be tested; The resistance measurement module is used to measure the resistance of the cable under test, determine the continuity of the cable under test based on the resistance value, and feed the judgment result back to the industrial control all-in-one computer.

2. The redundant bus test system according to claim 1, characterized in that, The base is also equipped with a voltage measurement module, which is connected to the industrial control computer to measure the current voltage value of the resistance measurement module and itself, and to feed the measurement result back to the industrial control computer.

3. The redundant bus test system according to claim 2, characterized in that, The base is also equipped with a guide rail, which is used to fix the resistance measurement module and the voltage measurement module.

4. The redundant bus test system according to claim 2, characterized in that, The industrial control all-in-one computer is connected to the resistance measurement module and the voltage measurement module respectively via RS485 signal lines.

5. The redundant bus test system according to claim 1, characterized in that, The interface module includes multiple DB9 interfaces.

6. The redundant bus test system according to claim 5, characterized in that, The interface module can simultaneously connect four sets of cables: MVB-Sa, MVB-Sb, MVB-T, and Profibus-S.

7. The redundant bus test system according to claim 1, characterized in that, The base is equipped with a main power switch button.

8. The redundant bus test system according to claim 1, characterized in that, The industrial control all-in-one computer is connected to the base via an adjustable fixed bracket.

9. The redundant bus test system according to claim 1, characterized in that, The support assembly also includes a folding handle, which is fixedly connected to the side wall of the base.

10. A method for testing a redundant bus, characterized in that, The method is implemented based on the system as described in any one of claims 1-9, and includes the following steps: Secure the support assembly; The test control module and software are run through the industrial control all-in-one computer, and the test control module and software are kept connected to the resistance measurement module. Connect the cable under test to the interface module; The resistance measurement module is controlled by the industrial control computer to measure the resistance value of the cable under test, and the continuity of the cable under test is determined based on the resistance value. The determination result is then fed back to the industrial control computer. The display module displays the operating voltage and current of the resistance measurement module in real time. Generate a test report.

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