Motor train unit safety loop test method, device and system
Through the automated EMU safety loop testing method, the operation terminal and the bicycle debugging test bench controller are used to automatically perform the test steps and test results, solving the problems of cumbersome and erroneous operation in the existing technology, and achieving fast and accurate safety loop testing.
Patent Information
- Application Number
- CN202411874634.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-18
- Publication Date
- 2025-03-25
Smart Images
Figure CN119689120A_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of rail transit, and in particular to a method, device and system for testing a safety loop of an EMU. Background Art
[0002] For driving safety, high-speed EMUs are equipped with safety loops. The safety loop is a crucial part of the design of high-speed EMUs and a key technology to ensure high-speed and stable operation of the EMUs. The safety loop is responsible for both train control and a monitoring system independent of the train control system. The design of the safety loop is usually implemented using traditional current relays.
[0003] The working level of the safety loop of high-speed EMU is high, and the system is independent. According to the working principle of the safety loop, high-speed EMUs are generally equipped with 6 safety loops, namely EB emergency brake loop, UB emergency brake loop, parking brake monitoring loop, passenger emergency brake loop, brake relief loop and fire alarm loop. Each loop is equipped with a trigger source and a status relay. The status relay feeds back its power-on and power-off status to the central control unit through the IOM module, so as to transmit the establishment and disconnection of the loop to the central control unit and other systems. The train safety loop is usually equipped with an independent power supply circuit breaker to provide a dedicated power supply for the safety loop. The loop power supply circuit breaker feeds back its working status to the central control unit through the IOM module. The purpose is to promptly issue an alarm prompt when the power supply circuit breaker is in an abnormal state, so as to handle it in time.
[0004] The train safety loop generally has three loop cables that run through the entire train, namely the loop control line, the loop status line and the loop negative line. The trigger source of the loop is set on the loop control line to control the disconnection and establishment of the loop. The loop status relay is connected between the loop status line and the loop negative line. The power on and off of the status relay represents the establishment and disconnection of the corresponding loop. In the test of the safety loop, it is necessary to check each trigger source of the loop, and test the DI feedback status of the loop power supply circuit breaker and the loop-related relays to determine whether the trigger source is working properly, the loop can be disconnected and established normally, and the DI feedback status of the components involved in the loop is correct. The working principle diagram of the passenger emergency braking loop of a certain type of high-speed EMU is shown below. Figure 1 shown.
[0005] In order to ensure the normal operation of the train safety loop, high-speed EMUs will conduct systematic tests on the safety loop during the vehicle commissioning phase before the train leaves the factory. The test phase includes train safety loop testing and single-vehicle safety loop testing. The purpose of the single-vehicle safety loop testing is mainly to further reduce the test cycle of the train safety loop and ensure the integrity of the safety loop testing.
[0006] The single-vehicle safety loop test of high-speed EMU mainly includes the loop power supply status DI feedback test, loop trigger source test, loop relay status DI feedback test, and bypass test. In the loop power supply status DI feedback test, the operator is required to manually open and close the power circuit breaker, and manually check whether the DI feedback status corresponding to the circuit breaker is accurate. In the loop trigger source test, the operator is required to manually activate and cancel the trigger source, and manually check whether the trigger effect of the trigger source is accurate. In the loop relay status DI feedback test, the operator is required to manually control the attraction and disconnection of the loop relay, and manually check whether the DI feedback status corresponding to the loop relay is accurate. In the bypass test, the operator is required to manually control the power on and off of the bypass relay through DO control and the auxiliary contact control of other relays in the line, and detect the DI feedback of the bypass relay to determine whether the feedback result is accurate.
[0007] The test of the single-vehicle safety loop is mainly performed manually by operators, and the results are judged manually. The operation process is cumbersome, takes a long operation cycle, and is prone to misoperation and misjudgment, which has an adverse impact on the accuracy of the safety loop test. Summary of the invention
[0008] In order to solve one of the above-mentioned technical defects, a method, device and system for testing the safety loop of an EMU are provided in an embodiment of the present application.
[0009] A first aspect of an embodiment of the present application provides a method for testing a safety loop of an EMU, the method comprising:
[0010] Obtaining an access request from an operation terminal and entering an execution order, wherein the execution order has preset test steps, and each test step contains corresponding test file content;
[0011] Sending control instructions to the single-vehicle debugging test bench and the single-vehicle controller in sequence according to the order of the test steps, so that the single-vehicle debugging test bench and the single-vehicle controller control the vehicle to be tested to execute the test file content of the test steps through the control instructions;
[0012] The execution results sent by the single-vehicle debugging test bench and the single-vehicle controller are obtained, and the execution results are compared with predefined limit values to obtain test results.
[0013] A second aspect of the embodiment of the present application provides a safety loop test device for an EMU, the device comprising: a processor and a memory;
[0014] Among them, one or more computer programs are stored in the memory, and the one or more computer programs include instructions; when the instructions are executed by the processor, the electronic device executes the method described in the first aspect of the embodiment of the present application.
[0015] A third aspect of the embodiment of the present application provides a train safety loop test system, the system comprising an operation terminal, a single vehicle debugging test bench, a single vehicle controller and the train safety loop test device according to the second aspect of the embodiment of the present application;
[0016] The operation terminal is used to send an access request to the EMU safety loop test device;
[0017] The single-vehicle debugging test bench is used to control the single-vehicle controller and receive the execution result sent by the single-vehicle controller;
[0018] The single vehicle controller is used to control the test file content of the vehicle to be tested to execute the test step;
[0019] The EMU safety loop test device is used to obtain an access request from an operating terminal and enter an execution order. Test steps are preset in the execution order, and each test step contains corresponding test file content. Control instructions are sent to the single-vehicle debugging test bench and the single-vehicle controller in sequence according to the order of the test steps, so that the single-vehicle debugging test bench and the single-vehicle controller control the vehicle to be tested to execute the test file content of the test step through the control instructions, obtain the execution result sent by the single-vehicle debugging test bench and the single-vehicle controller, and compare the execution result with a predefined limit value to obtain the test result.
[0020] The EMU safety loop test method provided in the embodiment of the present application is adopted to obtain the access request of the operating terminal and enter the execution order. The execution order presets the test steps, and each test step contains the corresponding test file content. According to the order of the test steps, control instructions are sent to the single-vehicle debugging test bench and the single-vehicle controller in sequence, so that the single-vehicle debugging test bench and the single-vehicle controller control the vehicle to be tested to execute the test file content of the test step through the control instructions. The execution result sent by the single-vehicle debugging test bench and the single-vehicle controller is obtained, and the execution result is compared with the predefined limit value to obtain the test result. Through the automated safety loop test process, the test of the EMU single-vehicle safety loop can be completed quickly and efficiently. It can not only reduce the operation cycle, but also provide the accuracy of the operation. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:
[0022] Figure 1 This is a schematic diagram of the working principle of the passenger emergency brake loop of a certain type of high-speed EMU;
[0023] Figure 2 This is a flow chart of the EMU safety loop testing method described in Example 1 of the present application;
[0024] Figure 3 This is a single vehicle safety loop test flow chart for a certain type of high-speed EMU;
[0025] Figure 4 This is a schematic diagram of the automatic pop-up screen prompt during the single-vehicle safety loop test of a certain type of high-speed EMU;
[0026] Figure 5 and Figure 6 This is a test schematic diagram of automatic power-on and voltage detection of a single-vehicle controller during a single-vehicle safety loop test of a certain type of high-speed EMU;
[0027] Figure 7 and Figure 8 This is a test schematic diagram of relay DO automatic control and DI automatic detection during the single-vehicle safety loop test of a certain type of high-speed EMU;
[0028] Fig. 9 This is a schematic diagram of the EMU safety loop test system described in Example 2 of the present application.
[0029] Reference numerals:
[0030] 1. Operation terminal, 2. Industrial network server, 3. Single vehicle debugging test bench, 4. Single vehicle controller. DETAILED DESCRIPTION
[0031] In order to make the technical solutions and advantages in the embodiments of the present application more clearly understood, the exemplary embodiments of the present application are further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present application, rather than an exhaustive list of all the embodiments. It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.
[0032] Example 1
[0033] like Figure 2 As shown, this embodiment proposes a method for testing the safety loop of a motor vehicle group, by which an automatic test of the safety loop of a single vehicle to be tested can be performed. The method includes:
[0034] S101, obtaining an access request from an operation terminal;
[0035] S102, sending control instructions to the single-vehicle debugging test bench and the single-vehicle controller;
[0036] S103, obtaining the execution results sent by the single-vehicle debugging test bench and the single-vehicle controller, comparing the execution results with predefined limit values, and obtaining test results.
[0037] Specifically, the EMU safety loop test method proposed in this embodiment can be applied to an industrial network server. The industrial network server serves as a central control center for processing and sending control instructions and data parsing, and sends instructions to the single vehicle debugging test bench and the single vehicle controller through a custom TCP transport layer protocol.
[0038] The operation terminal is a terminal device that can be operated by the operator, including but not limited to a handheld terminal or a PC. The operator can send an access request to the industrial network server by operating the operation terminal, and then access the industrial network server and enter the execution order. The execution order is preset with a test step, and each test step contains the corresponding test file content. Among them, the number of test steps and the test process of the test file content can be determined according to the actual safety loop test object to be executed. The test step also includes the determination of the control and feedback information of the vehicle to be tested. Each time a test step is executed, the industrial network server immediately sends a control instruction to the single vehicle debugging test bench and the single vehicle controller. In the case of multiple test steps, they can be executed in sequence according to the pre-set order of the test steps. The single vehicle debugging test bench and the single vehicle controller control the vehicle to be tested in real time according to the train network communication protocol, so that the vehicle to be tested executes the test file content in the test step. After the vehicle to be tested executes the test file content in the test step, an execution result is generated, and the single vehicle debugging test bench and the single vehicle controller return the execution result to the test step of the industrial network server according to the reverse transmission channel. Finally, in the industrial network server, the execution result is compared with the pre-defined limit value through logical judgment to obtain the final test result, forming a closed-loop test of the single-vehicle safety loop. During the entire single-vehicle safety loop test process, the execution order adopts a cyclic judgment mechanism, and is executed from top to bottom in sequence according to a specific cycle, without the need for manual judgment, and the single-vehicle safety loop test is automatically realized.
[0039] Furthermore, before the single-vehicle debugging test bench and the single-vehicle controller control the vehicle to be tested to execute the test file content of the test step through the control instruction, the method proposed in this embodiment also includes:
[0040] A first variable name is defined for the pins corresponding to the hard-wire connection between the single-vehicle debugging test bench and the single-vehicle controller and the vehicle to be tested, and the DO channel and DI channel corresponding to the relay.
[0041] Specifically, in this embodiment, the single-vehicle debugging test bench and the single-vehicle controller are connected to the vehicle under test through the on-board network and hard wires in a wired manner to achieve network and hard wire control and monitoring of the vehicle under test. In order to achieve accurate control and detection of the hard wires and relays of the vehicle under test by the single-vehicle debugging test bench and the single-vehicle controller, this embodiment defines a unique variable name for each pin corresponding to the hard wire and the DO and DI channels corresponding to the relay, which is recorded as the first variable name in this embodiment.
[0042] Furthermore, the process of the single vehicle debugging test bench and the single vehicle controller controlling the test vehicle to be tested to execute the test step of the test file content through the control instruction includes:
[0043] Create a first buffer area;
[0044] Read the test file content of the test step in the database, and write the test file content into the first buffer area;
[0045] The test file content in the first buffer area is executed line by line, and the corresponding hard-wire pin and DO channel and DI channel of the relay are selected according to the comparison between the second variable name and the first variable name of each line in the test file content.
[0046] Specifically, in this embodiment, the test file content of the test step is read from the database and written to the first cache area at the back end of the industrial network server, and at the same time, a persistent network communication connection is established between the back end where the industrial network server is located and the front end where the operating terminal, the single-vehicle debugging test bench, the single-vehicle controller, and the vehicle to be tested are located. Through this network communication connection, the front and back ends can exchange data in real time and bidirectionally. When the operator clicks the automatic execution button through the operating terminal, the industrial network server can execute the test file content line by line. For example, the industrial network server will judge and execute the following operations based on the content of the variable name of each line of the test file: "Protocol type / position / / traction unit / mode::A:value":
[0047] AOUT::A:1 means automatic output 1,
[0048] AOUT::A:0 means automatic output 0,
[0049] AIN::A:1 means automatic input 1,
[0050] AIN::A:0 means automatic input 0.
[0051] Furthermore, after the single-vehicle debugging test bench and the single-vehicle controller control the vehicle to be tested to execute the test file content of the test step through the control instruction, the method proposed in this embodiment also includes:
[0052] Create a second buffer area;
[0053] After any line in the test file content is executed, the execution result is sent to the second buffer area, and the measured value column is displayed in real time until the test file content is fully executed.
[0054] Specifically, in this embodiment, TCP communication threads are established between the industrial network server and the single-vehicle debugging test bench, and between the industrial network server and the single-vehicle controller to realize data sending and receiving. In order to establish a connection between the data and the test file content, so that the communication data is displayed in real time in the measured value column corresponding to the test file content, a second cache area is created in the communication thread for collecting and managing communication data. At the same time, a unique identifier can be established for the second cache area to distinguish it from other cache areas, for example, a second cache area is created with "location-vehicle number" as the unique identifier.
[0055] After the second buffer area is created, after any line in the test file content is executed, the execution result is sent to the second buffer area, and the measured value column is displayed in real time until the test file content is fully executed.
[0056] Furthermore, the method proposed in this embodiment also includes:
[0057] Send auxiliary operation prompt information to the operation terminal according to the test file content of the test step;
[0058] Obtaining auxiliary operation instructions executed by the operator according to the auxiliary operation prompt information;
[0059] Send control instructions to the single-vehicle debugging test bench and single-vehicle controller according to the auxiliary operation instructions.
[0060] Specifically, in some single-vehicle safety loop test processes, there are still inevitable operating links that require manual operation or visual confirmation by operators, such as operating air circuit breakers and passenger emergency brake handles. In this case, this embodiment can send auxiliary operation prompt information to the operation terminal, and the operator can perform auxiliary operations through the pop-up prompts of the operation terminal, thereby ensuring the integrity of the single-vehicle safety loop test.
[0061] The method proposed in this embodiment is further explained by taking the single-vehicle safety loop test of a certain type of high-speed EMU as an example. The test of the single-vehicle safety loop is divided into four chapters: loop power supply status DI feedback test, loop trigger source test, loop relay status DI feedback test and bypass test. During the automatic testing process of each chapter, if the detection result in the process is correct, the subsequent test will continue. If the detection result is incorrect, the test will be interrupted, and an alarm prompt will automatically pop up through the operation terminal. The operator can choose to perform fault handling and continue with the subsequent test of this chapter after the fault is handled. You can also choose to perform subsequent chapter tests and perform the former fault handling after the subsequent chapter tests are completed. The specific process is as follows Figure 3 shown.
[0062] According to the automatic test requirements of the bicycle safety loop, the operation types in the test include the following three types:
[0063] (1) Vehicle components that require manual operation and visual confirmation, such as air circuit breakers, relays, passenger emergency brake handles, etc.;
[0064] (2) Train hard line control and detection test: Power on the train hard line through the single vehicle controller and read the train hard line voltage signal through the single vehicle controller;
[0065] (3) DO control and DI feedback test of relays: The train line relays and each circuit status relay are controlled by DO through the single-vehicle debugging test bench, and the DI feedback of the relays is tested.
[0066] Taking the 02 vehicle safety loop automation test as an example, after entering the automatic test process, according to the design distribution of the automatic test, the loop power supply status DI feedback test is performed first. After the test is completed, the subsequent loop trigger source test, loop relay status DI feedback test and bypass test and other chapter tests are automatically performed.
[0067] Vehicle components that require manual operation and visual confirmation during operation, such as air circuit breakers and passenger emergency brake handles, are automatically prompted by pop-up screens on the operation terminal and completed with the assistance of operators. Figure 4 shown.
[0068] During the operation, the train hard-line control and detection test is performed by the single vehicle controller, which automatically realizes the vehicle end power-on and reads the end voltage signal according to the defined variable name, and automatically determines whether the result is correct according to the set standard value, such as Figure 5 and Figure 6 shown.
[0069] During the operation, the DO control and DI feedback test of the relay is carried out by the single-vehicle debugging test bench according to the defined variable names to automatically control the DO and automatically read the DI feedback signals of the train line relay and each loop status relay, and automatically judge whether the result is correct according to the set standard value, such as Figure 7 and Figure 8 shown.
[0070] Example 2
[0071] This embodiment provides a safety loop test device for an EMU, the device comprising a processor and a memory;
[0072] Wherein, one or more computer programs are stored in the memory, and the one or more computer programs include instructions; when the instructions are executed by the processor, the electronic device performs the following method:
[0073] Obtaining an access request from an operation terminal and entering an execution order, wherein the execution order has preset test steps, and each test step contains corresponding test file content;
[0074] Sending control instructions to the single-vehicle debugging test bench and the single-vehicle controller in sequence according to the order of the test steps, so that the single-vehicle debugging test bench and the single-vehicle controller control the vehicle to be tested to execute the test file content of the test steps through the control instructions;
[0075] The execution results sent by the single-vehicle debugging test bench and the single-vehicle controller are obtained, and the execution results are compared with predefined limit values to obtain test results.
[0076] This embodiment can quickly and efficiently complete the safety loop test of a single vehicle of a train set through an automated safety loop test process, thereby reducing the operation cycle and improving the accuracy of the operation.
[0077] Example 3
[0078] like Fig. 9 As shown, this embodiment proposes a EMU safety loop test system, which includes an operation terminal 1, a single-vehicle debugging test bench 3, a single-vehicle controller 4 and an EMU safety loop test device.
[0079] The operation terminal 1 is used to send an access request to the EMU safety loop test device;
[0080] The single-vehicle debugging test bench 3 is used to control the single-vehicle controller 4 and receive the execution result sent by the single-vehicle controller 4;
[0081] A single vehicle controller 4, used to control the test file content of the vehicle to be tested to execute the test step;
[0082] The EMU safety loop test device is used to obtain an access request from an operating terminal 1, enter an execution order, execute the preset test steps in the execution order, each test step contains corresponding test file content, and send control instructions to the single-vehicle debugging test bench 3 and the single-vehicle controller 4 in sequence according to the order of the test steps, so that the single-vehicle debugging test bench 3 and the single-vehicle controller 4 control the vehicle to be tested to execute the test file content of the test step through the control instructions, obtain the execution result sent by the single-vehicle debugging test bench 3 and the single-vehicle controller 4, compare the execution result with the pre-defined limit value, and obtain the test result.
[0083] Specifically, this embodiment adopts a B / S network architecture to build a EMU safety loop test system. The EMU safety loop test device is placed in the industrial network server 2. The industrial network server 2, the operation terminal 1, the single vehicle debugging test bench 3 and the single vehicle controller 4 use the workshop industrial network as the transmission medium. The single vehicle debugging test bench 3 and the single vehicle controller 4 exchange data through the workshop industrial network. The single vehicle debugging test bench 3 can control the single vehicle controller 4 and receive the execution results of the single vehicle controller 4. The operator can control the single vehicle debugging test bench 3 through the operation terminal 1, control the single vehicle debugging test bench 3 to start the automatic test program of the single vehicle safety loop, and the operation terminal 1 can also receive the execution results of the single vehicle debugging test bench 3.
[0084] Furthermore, the single-vehicle debugging test bench 3 and the single-vehicle controller 4 are connected to the vehicle to be tested through the on-board network and hard line in a wired manner to achieve network and hard line control and monitoring of the vehicle to be tested.
[0085] Furthermore, TCP communication threads are established between the industrial network server 2 and the single-vehicle debugging test bench 3, and between the industrial network server 2 and the single-vehicle controller 4 to realize data sending and receiving.
[0086] Furthermore, a persistent WebSocket network communication connection is established between the back end where the industrial network server 2 is located and the front end where the operation terminal 1, the single vehicle debugging test bench 3, the single vehicle controller 4 and the vehicle to be tested are located. Through the WebSocket network communication connection, the front and back ends can exchange data in real time and bidirectionally.
[0087] The EMU safety loop test system provided in this embodiment is used to obtain the access request of the operation terminal 1 and enter the execution order. The execution order presets the test steps, and each test step contains the corresponding test file content. According to the order of the test steps, control instructions are sent to the single vehicle debugging test bench 3 and the single vehicle controller 4 in sequence, so that the single vehicle debugging test bench 3 and the single vehicle controller 4 control the vehicle to be tested to execute the test file content of the test step through the control instructions. The execution result sent by the single vehicle debugging test bench 3 and the single vehicle controller 4 is obtained, and the execution result is compared with the predefined limit value to obtain the test result. Through the automated safety loop test process, the test of the EMU single vehicle safety loop can be completed quickly and efficiently. It can not only reduce the operation cycle, but also provide the accuracy of the operation.
[0088] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or can communicate with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.
[0089] Although the preferred embodiments of the present application have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications falling within the scope of the present application.
[0090] Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include these modifications and variations.
Claims
1. A method for testing a safety loop of an EMU, characterized in that: The method comprises: Obtaining an access request from an operation terminal and entering an execution order, wherein the execution order has preset test steps, and each test step contains corresponding test file content; Sending control instructions to the single-vehicle debugging test bench and the single-vehicle controller in sequence according to the order of the test steps, so that the single-vehicle debugging test bench and the single-vehicle controller control the vehicle to be tested to execute the test file content of the test steps through the control instructions; The execution results sent by the single-vehicle debugging test bench and the single-vehicle controller are obtained, and the execution results are compared with predefined limit values to obtain test results.
2. The method according to claim 1, characterized in that Before the single-vehicle debugging test bench and the single-vehicle controller control the vehicle to be tested to execute the test file content of the test step through the control instruction, the method further includes: A first variable name is defined for the pins corresponding to the hard-wire connection between the single-vehicle debugging test bench and the single-vehicle controller and the vehicle to be tested, and the DO channel and DI channel corresponding to the relay.
3. The method according to claim 2, characterized in that The process of the single vehicle debugging test bench and the single vehicle controller controlling the vehicle to be tested to execute the test file content of the test step through the control instruction includes: Create a first buffer area; Read the test file content of the test step in the database, and write the test file content into the first buffer area; The test file content in the first buffer area is executed line by line, and the corresponding hard-wire pin and DO channel and DI channel of the relay are selected according to the comparison between the second variable name of each line in the test file content and the first variable name.
4. The method according to claim 3, characterized in that After the single-vehicle debugging test bench and the single-vehicle controller control the vehicle to be tested to execute the test file content of the test step through the control instruction, the method further includes: Create a second buffer area; After any line in the test file content is executed, the execution result is sent to the second buffer area, and the measured value column is displayed in real time until the test file content is fully executed.
5. The method according to claim 1, characterized in that The method further comprises: Sending auxiliary operation prompt information to the operation terminal according to the test file content of the test step; Obtaining auxiliary operation instructions executed by the operator according to the auxiliary operation prompt information; Control instructions are sent to the single-vehicle debugging test bench and the single-vehicle controller according to the auxiliary operation instructions.
6. A safety loop test device for a train set, characterized in that: The device comprises a processor and a memory; One or more computer programs are stored in the memory, and the one or more computer programs include instructions; when the instructions are executed by the processor, the electronic device executes the method as claimed in any one of claims 1 to 5.
7. A train safety loop test system, characterized in that: The system comprises an operation terminal, a single vehicle debugging test bench, a single vehicle controller and the EMU safety loop test device as claimed in claim 6; The operation terminal is used to send an access request to the EMU safety loop test device; The single-vehicle debugging test bench is used to control the single-vehicle controller and receive the execution result sent by the single-vehicle controller; The single vehicle controller is used to control the test file content of the vehicle to be tested to execute the test step; The EMU safety loop test device is used to obtain an access request from an operating terminal and enter an execution order. Test steps are preset in the execution order, and each test step contains corresponding test file content. Control instructions are sent to the single-vehicle debugging test bench and the single-vehicle controller in sequence according to the order of the test steps, so that the single-vehicle debugging test bench and the single-vehicle controller control the vehicle to be tested to execute the test file content of the test step through the control instructions, obtain the execution result sent by the single-vehicle debugging test bench and the single-vehicle controller, and compare the execution result with a predefined limit value to obtain the test result.
8. The system according to claim 7, characterized in that The single-vehicle debugging test bench and the single-vehicle controller are connected to the vehicle to be tested via an on-board network and hard lines in a wired manner.
9. The system according to claim 7, characterized in that TCP communication threads are established between the EMU safety loop test device and the single-vehicle debugging test bench, and between the EMU safety loop test device and the single-vehicle controller.
10. The system according to claim 7, characterized in that A WebSocket communication connection is established between the operation terminal, the single-vehicle debugging test bench, the single-vehicle controller and the EMU safety loop test device.