A method for testing failure of a directional handle, an electronic device and a storage medium

Abstract

The application discloses a kind of direction handle failure test methods, comprising: S1, in TACN vehicle-mounted system, demand definition is formulated, including defining the basis of TACN vehicle-mounted system and the output action of direction handle failure when direction handle failure is judged;S2, design the multiple situations of direction handle failure, test the judgment and output action of TACN vehicle-mounted system to direction handle failure under various situations, ensure that the judgment and output action of TACN vehicle-mounted system under various situations are consistent with demand definition;The multiple situations of direction handle failure include the direction handle failure situation of train in stationary state and running state.The application is suitable for heavy haul train and non-heavy haul train, stationary state and motion state Multiple scenes can accurately detect whether direction handle is failure and output response action to ensure train travel safety.

Description

Technical Field

[0001] This invention relates to the field of rail transportation, and in particular to a test method, electronic device and storage medium for a steering handle malfunction. Background Technology

[0002] Railway signaling technology is an essential means to ensure safe train operation, achieve effective train control, improve throughput capacity, and provide real-time information to operation and management personnel. It is also one of the key technologies for upgrading existing lines and constructing high-speed railways.

[0003] The steering handle is one of the core operating devices in the cab of rail transit vehicles (such as subways, trains, and trams), used to control the train's forward, reverse, and neutral (coasting) states. The directional commands issued by the steering handle are one of the foundations and key bases for railway signaling technology to perform safety logic judgments, train tracking, and control. Therefore, the reliability and accuracy of the steering handle directly affect the safety and operational efficiency of train operation.

[0004] Given the crucial role of the steering wheel in vehicle systems, fault testing of the steering wheel is a vital part of the verification testing process. Its main purpose is to prevent dangerous situations caused by incorrect directional commands and to ensure the driving safety of onboard equipment. However, there is currently no systematic methodology for testing steering wheel malfunctions.

[0005] The statements herein provide only background information in relation to the present invention and do not necessarily constitute prior art. Summary of the Invention

[0006] The purpose of this invention is to provide a test method for steering handle failure based on the TACN vehicle system.

[0007] To achieve the above objectives, the present invention provides a method for testing steering handle malfunctions, comprising:

[0008] S1. Define the requirements in the TACN vehicle system, including defining the criteria for the TACN vehicle system to determine steering handle failure and the output actions when the steering handle fails.

[0009] S2. Design various scenarios for steering handle failure, and test the TACN vehicle system's judgment and output actions in various scenarios to ensure that the TACN vehicle system's judgment and output actions are consistent with the requirements definition in various scenarios.

[0010] The various scenarios of steering handle malfunction include steering handle malfunctions when the train is stationary and when it is in motion.

[0011] Optionally, step S1 includes the following steps:

[0012] S1.1 The following two situations are defined in the TACN vehicle system as the basis for the TACN vehicle system to judge steering handle failure:

[0013] When the train is stationary, the direction handle is simultaneously moved forward and backward for more than a time threshold.

[0014] When the train exceeds the speed threshold, the system detects that the direction handle changes from forward to backward, or from backward to forward, and the duration of these changes exceeds the time threshold.

[0015] S1.2. Define the output action of the TACN vehicle system when it determines that the steering handle is faulty:

[0016] When the TACN onboard system detects a steering handle malfunction, the DMI indicates a malfunction and the ATP outputs braking.

[0017] After braking, the DMI prompts the driver to place the steering handle in the neutral position. After the driver confirms, a timer is started. If the neutral position is detected within the timer period, the steering handle malfunction is considered to have been resolved. When the steering handle malfunction is resolved and the train is at a stop, the DMI prompts the driver to release the brake. Otherwise, if the neutral position is not detected within the timer period, releasing the brake is not allowed.

[0018] Optionally, step S2 includes the following steps:

[0019] S2.1 Test the steering handle malfunction when the train is stationary;

[0020] S2.2 Test the direction handle malfunction of the test train in operation, including two malfunction scenarios: the direction handle changes from forward to backward and the direction handle changes from backward to forward.

[0021] Optionally, step S2.1 includes the following steps:

[0022] S2.1.1 When the test direction handle moves forward and backward simultaneously, but the holding time is less than the time threshold, the TACN vehicle system detects no fault.

[0023] S2.1.2 When the test direction handle moves forward and backward simultaneously, and the holding time is greater than or equal to the time threshold, the TACN vehicle system detects the fault and outputs the correct response action.

[0024] Optionally, step S2.1 further includes:

[0025] S2.1.3 Repeat step S2.1.2 to ensure that the TACN vehicle system can still detect the fault and output the correct response action when the steering handle fails again.

[0026] Optionally, step S2.1 further includes the following steps:

[0027] S2.1.4 When the test steering handle moves only forward or only backward, the TACN vehicle system detects no fault.

[0028] Optionally, step S2.2 includes the following steps:

[0029] S2.2.1 When the test train is running at a speed higher than the speed threshold, if the steering handle is moved from forward to backward but the holding time is less than the time threshold, the TACN on-board system detects no fault.

[0030] S2.2.2 When the test train is running at a speed higher than the speed threshold, if the steering handle is moved from forward to backward and the holding time is greater than or equal to the time threshold, the TACN on-board system detects the fault and outputs the correct response action.

[0031] Optionally, step S2.2 further includes:

[0032] S2.2.3 Repeat step S2.2.2 to ensure that the TACN vehicle system can still detect the fault and output the correct response action when the steering handle fails again.

[0033] Optionally, step S2.2 further includes the following steps:

[0034] S2.2.4 When the test train is running at a speed higher than the speed threshold, if the steering handle is moved from backward to forward but the holding time is less than the time threshold, the TACN on-board system detects no fault.

[0035] S2.2.5 When the test train is running at a speed higher than the speed threshold, if the steering handle is moved from backward to forward and the holding time is greater than or equal to the time threshold, the TACN on-board system detects the fault and outputs the correct response action.

[0036] Optionally, step S2.2 further includes:

[0037] S2.2.6 Repeat step S2.2.5 to ensure that the TACN vehicle system can still detect the fault and output the correct response action when the steering handle fails again.

[0038] Optionally, step S2.2 further includes the following steps:

[0039] S2.2.7 When the test train is running at a speed below the speed threshold, if the steering handle is moved from forward to backward or from backward to forward, the TACN on-board system detects no fault.

[0040] Optionally, when testing each fault condition, the train is placed in the corresponding state and the steering handle is placed in the corresponding state;

[0041] When the TACN vehicle system detects no fault, the DMI does not indicate a fault, and the ATP works normally.

[0042] When the TACN vehicle system detects a fault, its correct response is as follows:

[0043] DMI indicates a fault, ATP outputs braking, and after braking, DMI prompts to put the steering lever in the neutral position;

[0044] Click the OK button. If the steering handle returns to the neutral position within the timer period, and the DMI prompts that the brakes have been released, click the OK button again. The brakes will then be released.

[0045] If the steering handle does not return to the neutral position within the timer period after clicking the confirmation button, the braking will not be relieved even if the confirmation button is clicked again.

[0046] Optionally, the steering handle failure includes steering handle failures in both heavy-haul and non-heavy-haul trains;

[0047] The correct response action specifically involves ATP output braking: for heavy-load trains, ATP outputs standard braking; for non-heavy-load trains, ATP outputs maximum standard braking.

[0048] Optionally, the time threshold is 10 seconds.

[0049] Optionally, the speed threshold is 5 km / h.

[0050] Optionally, the timer duration is set to 60 seconds.

[0051] To achieve the above objectives, the present invention also provides a computer-readable storage medium having a computer program stored thereon, wherein when the computer program is executed by a processor, it implements the method for testing steering handle malfunction.

[0052] To achieve the above objectives, the present invention also provides an electronic device, including a processor and a memory, wherein the memory stores a computer program, and when the computer program is executed by the processor, it implements the method for testing steering handle malfunction.

[0053] Compared with the prior art, the present invention has at least the following beneficial effects:

[0054] 1. Based on the vehicle operation scenario, a test method for steering handle failure in the TACN vehicle system is summarized, which can serve as a reference or guide for the industry in testing steering handle failure.

[0055] 2. From the perspective of the occurrence of steering handle failure, a test method for steering handle failure in both stationary and running states of heavy-haul and non-heavy-haul trains is proposed, realizing the testing of steering handle failure detection function and ensuring the completeness of test coverage.

[0056] 3. The test verified the steering handle malfunction and recovery function under various scenarios, and also considered the verification of the timer reset function, ensuring the breadth and scope of the test, providing a solution for subsequent steering handle malfunction inspection tests, and improving test efficiency and quality. Attached Figure Description

[0057] Figure 1 This is an overall design diagram of the test scenario for this invention;

[0058] Figure 2 This is a flowchart of the method for testing the steering handle failure of a non-heavy-load train according to the present invention;

[0059] Figure 3 This is a flowchart of the method for testing the failure of the steering handle of a heavy-haul train according to the present invention. Detailed Implementation

[0060] The following detailed description, in conjunction with the accompanying drawings and specific embodiments, provides a further detailed explanation of the testing method, electronic device, and storage medium for steering wheel malfunction based on the TACN vehicle system proposed in this invention. The advantages and features of this invention will become clearer from the following description. It should be noted that the accompanying drawings are in a very simplified form and use non-precise proportions, used only to facilitate and clearly illustrate the embodiments of this invention. Please refer to the accompanying drawings to make the objectives, features, and advantages of this invention more apparent and understandable. It should be understood that the structures, proportions, sizes, etc., depicted in the accompanying drawings are only for illustrative purposes to aid those skilled in the art and are not intended to limit the implementation conditions of this invention. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to the size, without affecting the effects and objectives achieved by this invention, should still fall within the scope of the technical content disclosed in this invention.

[0061] This invention provides a test method for steering handle failure based on the TACN (Train Automatic Control Network) vehicle system.

[0062] The TACN on-board system (hereinafter referred to as the system) is a new type of train autonomous operation control system based on Beidou positioning.

[0063] The basic functions of the steering handle include:

[0064] Forward: Controls the train's forward movement, usually used in conjunction with the traction brake handle;

[0065] Backward: Used for train reversing or shunting operations; some systems limit the reverse speed (e.g., ≤10km / h).

[0066] Neutral position: No power output.

[0067] The testing method comprises two steps. The first step is to define the requirements for the TACN in-vehicle system. The second step, based on the requirements definition, is to design various scenarios of steering wheel malfunction and test whether the TACN in-vehicle system's judgment and output actions regarding steering wheel malfunction under these scenarios are consistent with the requirements definition. The specific details of this testing method are as follows:

[0068] S1. Define the requirements in the TACN vehicle system, including the following steps:

[0069] S1.1 The following two situations are defined in the TACN vehicle system as the basis for the system to judge the steering handle malfunction:

[0070] (1) When the train is stationary, the direction handle is simultaneously moved forward and backward for more than a time threshold. In this embodiment, the time threshold is set to 10s.

[0071] During normal operation, the steering handle can only be in one valid position (forward, backward, or neutral). When the system simultaneously detects the steering handle moving forward and backward, it indicates that the steering handle has malfunctioned. The time threshold (10s) is set because the invalid state of moving forward and backward simultaneously may be due to signal interference, causing the system to generate a false alarm. However, if it exceeds 10 seconds, it means that the invalid state continues to exist, ruling out accidental events and confirming that the steering handle is malfunctioning.

[0072] (2) When the train exceeds the speed threshold, the direction handle is detected to change from forward to backward or from backward to forward, and the holding time exceeds the time threshold. In this embodiment, the speed threshold is set to 5 km / h.

[0073] When the train is running, changing the direction of the steering handle can only be done under specific conditions, such as when the train is stopped or at low speed. If the train suddenly changes direction at high speed, it may cause safety problems, such as damage to the transmission system or causing an accident. Therefore, when the train exceeds the speed threshold (5km / h), a change in the direction of the steering handle is considered a steering handle malfunction. The time threshold (10s) is set because a short-term change in direction may be due to driver misoperation (such as accidentally touching the steering handle) or signal interference. The system can tolerate short-term changes in direction, but if it exceeds 10s, it means that the steering handle is stable in the opposite position, ruling out misoperation and other situations, and confirming that the steering handle is malfunctioning.

[0074] S1.2 Simultaneously, the system output action is defined in the TACN vehicle system when the system determines that the steering handle is faulty:

[0075] (1) When the system determines that the steering handle is faulty, the DMI prompts the fault. In this embodiment, it is set to display the text "steering handle fault". For heavy-load trains, the ATP outputs the service brake. For non-heavy-load trains, the ATP outputs the maximum service brake.

[0076] The DMI (Driver-Machine Interface) is a human-machine interface, referring to the interface or device through which the driver interacts with the TACN in-vehicle system. It is typically used to display key information and receive driver input.

[0077] The ATP (Automatic Train Protection) system is a train automatic protection system.

[0078] The term "service braking" refers to deceleration or parking braking under normal conditions; the term "maximum service braking" refers to the highest level of service braking triggered in an emergency, where the braking force is close to the limit but not an emergency braking.

[0079] (2) When the system determines that the steering handle is faulty, after braking, the DMI prompts the driver to put the steering handle in the neutral position. In this embodiment, the text "Set steering handle to neutral position" is displayed. After the driver confirms, the timer is started. If the system collects the neutral position within the timer time, it is considered that the steering handle fault has been recovered. When the steering handle fault has been recovered and the train is in a stopped state, the DMI prompts the driver to release the service braking or the maximum service braking. Otherwise, if the system does not collect the neutral position within the timer time, it is not allowed to release the braking or the maximum service braking.

[0080] In this embodiment, the timer duration is set to 60 seconds.

[0081] S2. Based on the above requirements definition, design various scenarios of steering handle failure, test the TACN vehicle system's judgment and output actions for steering handle failure, and ensure that the output of the TACN vehicle system is consistent with the requirements definition under various scenarios.

[0082] like Figure 1 As shown, steering handle malfunctions fall into two main categories: the first category is steering handle malfunctions for heavy-haul trains; the second category is steering handle malfunctions for non-heavy-haul trains. Steering handle malfunctions for both heavy-haul and non-heavy-haul trains include malfunctions in both stationary and running states. In the running state, steering handle malfunctions further include two scenarios: the steering handle changes direction from forward to backward, and the steering handle changes direction from backward to forward.

[0083] For heavy-haul trains, the following steps are performed sequentially to verify the correctness of the system's judgment of steering handle malfunctions and output actions under various conditions:

[0084] D2.1 Test the steering handle malfunction of a heavy-haul train when it is stationary. The test procedure is as follows:

[0085] D2.1.1 When the test direction handle moves forward and backward simultaneously, but the time is less than the set threshold, the system detects no fault and proceeds with the following steps:

[0086] To bring the train to a standstill;

[0087] The forward and backward relays of the steering handle are activated in less than 10 seconds;

[0088] DMI displays a faulty text message about the directional handle, while ATP functions normally.

[0089] D2.1.2 When the test direction handle moves forward and backward simultaneously for a period of time exceeding a set threshold, the system detects a fault and outputs the correct response action, proceeding in the following steps:

[0090] To bring the train to a standstill;

[0091] The forward and backward relays of the steering handle are activated for a time of 10 seconds or more;

[0092] DMI outputs a steering handle fault message, ATP outputs a common braking message, and after braking, DMI outputs a confirmation message for setting the steering handle to neutral position.

[0093] Click the OK button. If the steering wheel returns to the neutral position within 60 seconds, the DMI prompt will indicate that the service brake has been released. Click the OK button again. The service brake will be released.

[0094] If the steering wheel returns to the neutral position after 60 seconds after clicking the confirmation button, the regular braking will not be able to relieve the problem even if the confirmation button is clicked again.

[0095] D2.1.3 Repeat step D2.1.2 to ensure that the system can still detect the fault and output the correct response action when the steering handle fails again.

[0096] D2.1.4 When the test steering handle moves only forward or only backward, if the system detects no fault, proceed with the following steps:

[0097] To bring the train to a standstill;

[0098] The forward relay of the steering handle is activated for a time of 10 seconds or more;

[0099] DMI displays a faulty text message about the directional handle, while ATP functions normally.

[0100] Activate the rearward relay of the steering handle for a time greater than or equal to 10 seconds;

[0101] DMI outputs a fault message for the directional handle, while ATP operates normally.

[0102] D2.2 Test the steering handle malfunction of a heavy-haul train in operation. The test procedure is as follows:

[0103] D2.2.1 When the heavy-haul train is running at a speed higher than 5 km / h, if the steering handle is switched from forward to backward within a time frame less than a set threshold, and the system detects no fault, the following steps are performed sequentially:

[0104] To make the heavy-haul train run at a speed higher than 5 km / h, move the steering handle from forward to backward.

[0105] If the holding time is less than 10 seconds, the DMI will output a text message indicating a directional handle failure, while the ATP will function normally.

[0106] D2.2.2 When the heavy-haul train is running at a speed higher than 5 km / h, if the steering handle is switched from forward to backward for a period of time exceeding a set threshold, the system detects the fault and outputs the correct response action, proceeding in the following steps:

[0107] To make the heavy-haul train run at a speed higher than 5 km / h, move the steering handle from forward to backward.

[0108] If the holding time is greater than or equal to 10 seconds, check the DMI output direction handle fault text, ATP output normal braking, and after braking, DMI output set direction handle neutral position confirmation text.

[0109] Click the OK button. If the steering wheel returns to the neutral position within 60 seconds, the DMI prompt will indicate that the service brake has been released. Click the OK button again. The service brake will be released.

[0110] If the steering wheel returns to the neutral position after 60 seconds after clicking the confirmation button, the regular braking will not be able to relieve the problem even if the confirmation button is clicked again.

[0111] D2.2.3 Repeat step D2.2.2 to ensure that the TACN vehicle system can still detect the fault and output the correct response action when the steering handle fails again.

[0112] D2.2.4 When the heavy-haul train is running at a speed higher than 5 km / h, if the steering handle is moved from backward to forward, but the time is less than a set threshold, the system detects no fault and proceeds with the following steps:

[0113] To enable heavy-haul trains to run at speeds exceeding 5 km / h, the steering handle is switched from backward to forward.

[0114] If the holding time is less than 10 seconds, the DMI will output a text message indicating a directional handle failure, while the ATP will function normally.

[0115] D2.2.5 When the heavy-haul train is running at a speed higher than 5 km / h, if the steering handle is moved from backward to forward for a period of time exceeding a set threshold, the system detects the fault and outputs the correct response action, proceeding in the following steps:

[0116] To enable heavy-haul trains to run at speeds exceeding 5 km / h, the steering handle is switched from backward to forward.

[0117] If the holding time is greater than or equal to 10 seconds, check the DMI output direction handle fault text, ATP output common braking, and output the setting of the direction handle neutral position confirmation text after braking.

[0118] Click the OK button. If the steering wheel returns to the neutral position within 60 seconds, the DMI prompt will indicate that the service brake has been released. Click the OK button again. The service brake will be released.

[0119] If the steering wheel returns to the neutral position after 60 seconds after clicking the confirmation button, the regular braking will not be able to relieve the problem even if the confirmation button is clicked again.

[0120] D2.2.6 Repeat step D2.2.5 to ensure that the system can still detect the fault and output the correct response action when the steering handle fails again;

[0121] D2.2.7 When testing a heavy-haul train running at a speed below 5 km / h, if the system detects no fault when the steering handle is moved from forward to backward or from backward to forward, proceed with the following steps:

[0122] To enable heavy-haul trains to operate at speeds below 5 km / h;

[0123] Change the direction handle from forward to backward and hold it for at least 10 seconds;

[0124] DMI displays a faulty text message about the directional handle, while ATP functions normally.

[0125] Change the direction handle from backward to forward and hold it for at least 10 seconds;

[0126] DMI outputs a fault message for the directional handle, while ATP operates normally.

[0127] During testing, follow the steps outlined above in sequence. If the system output matches the requirements definition in each step, it indicates that the steering handle malfunction can be accurately tested.

[0128] For non-heavy-haul trains, the following steps are performed sequentially to verify the correctness of the system's judgment of steering handle malfunctions and output actions under various conditions:

[0129] L2.1 Test the steering handle malfunction of a non-heavy-loaded train in a stationary state. The test procedure is as follows:

[0130] L2.1.1 When the test direction handle moves forward and backward simultaneously, but the time is less than the set threshold, the system detects no fault and proceeds with the following steps:

[0131] The forward and backward relays of the steering handle are activated in less than 10 seconds;

[0132] DMI displays a faulty text message about the directional handle, while ATP functions normally.

[0133] L2.1.2 When the test direction handle moves forward and backward simultaneously for a period of time exceeding a set threshold, the system detects a fault and outputs the correct response action, proceeding in the following steps:

[0134] The forward and backward relays of the steering handle are activated for a time of 10 seconds or more;

[0135] DMI outputs a steering handle fault message, ATP outputs the maximum service braking, and after braking, DMI outputs a steering handle neutral position confirmation message.

[0136] Click the OK button. If the steering wheel returns to the neutral position within 60 seconds, check the DMI prompt to release the maximum service brake. Click the OK button again. Check that the maximum service brake has been released.

[0137] If you press the confirmation button and the steering lever returns to the neutral position after 60 seconds, the maximum service braking will not be relieved even if you press the confirmation button again.

[0138] L2.1.3 Repeat step L2.1.2 to ensure that the system can still detect the fault and output the correct response action when the steering handle fails again.

[0139] L2.1.4 When the test steering handle moves only forward or only backward, if the system detects no fault, proceed with the following steps:

[0140] To bring the train to a standstill;

[0141] The forward relay of the steering handle is activated for more than 10 seconds;

[0142] DMI displays a faulty text message about the directional handle, while ATP functions normally.

[0143] The rearward relay of the steering handle is activated for more than 10 seconds;

[0144] DMI outputs a fault message for the directional handle, while ATP operates normally.

[0145] L2.2 Test the steering handle malfunction of a non-heavy-loaded train in operation. The test procedure is as follows:

[0146] L2.2.1 When testing a non-heavy-loaded train running at a speed higher than 5 km / h, if the steering handle changes from forward to backward within a time frame less than a set threshold, and the system detects no fault, the following steps are performed sequentially:

[0147] To enable non-heavy-haul trains to run at speeds exceeding 5 km / h, the steering handle is switched from forward to backward.

[0148] If the holding time is less than 10 seconds, the DMI will output a text message indicating a directional handle failure, while the ATP will function normally.

[0149] L2.2.2 When a non-heavy-loaded train is running at a speed higher than 5 km / h, if the steering handle is switched from forward to backward for a period of time exceeding a set threshold, the system detects a fault and outputs the correct response action, proceeding in the following steps:

[0150] To enable non-heavy-haul trains to run at speeds exceeding 5 km / h, the steering handle is switched from forward to backward.

[0151] If the holding time is greater than or equal to 10 seconds, check the DMI output steering handle fault text, ATP outputs maximum service braking, and after braking, DMI outputs a text confirming the steering handle is in neutral position.

[0152] Click the OK button. If the steering wheel returns to the neutral position within 60 seconds, check the DMI prompt to release the maximum service brake. Click the OK button again. Check that the maximum service brake has been released.

[0153] If you press the confirmation button and the steering lever returns to the neutral position after 60 seconds, the maximum service braking will not be relieved even if you press the confirmation button again.

[0154] L2.2.3 Repeat step L2.2.2 to ensure that the TACN vehicle system can still detect the fault and output the correct response action when the steering handle fails again.

[0155] L2.2.4 When testing a non-heavy-loaded train running at a speed higher than 5 km / h, if the steering handle is moved from backward to forward, but the time is less than a set threshold, the system detects no fault and proceeds with the following steps:

[0156] To enable non-heavy-haul trains to run at speeds exceeding 5 km / h, the steering handle is switched from backward to forward.

[0157] If the holding time is less than 10 seconds, the DMI will output a text message indicating a directional handle failure, while the ATP will function normally.

[0158] L2.2.5 When a non-heavy-loaded train is running at a speed higher than 5 km / h, if the steering handle is switched from backward to forward for a period of time exceeding a set threshold, the system detects a fault and outputs the correct response action, proceeding in the following steps:

[0159] To enable non-heavy-haul trains to run at speeds exceeding 5 km / h, the steering handle is switched from backward to forward.

[0160] If the holding time is greater than or equal to 10 seconds, check the DMI output steering handle fault text, ATP output maximum service braking, and output the steering handle neutral position confirmation text after braking.

[0161] Click the OK button. If the steering wheel returns to the neutral position within 60 seconds, check the DMI prompt to release the maximum service brake. Click the OK button again. Check that the maximum service brake has been released.

[0162] If you press the confirmation button and the steering lever returns to the neutral position after 60 seconds, the maximum service braking will not be relieved even if you press the confirmation button again.

[0163] L2.2.6 Repeat step L2.2.5 to ensure that the system can still detect the fault and output the correct response action when the steering handle fails again;

[0164] L2.2.7 When testing a non-heavy-loaded train running at a speed below 5 km / h, if the system detects no fault when the steering handle is moved from forward to backward or from backward to forward, proceed with the following steps:

[0165] To enable non-heavy-haul trains to operate at speeds below 5 km / h;

[0166] Change the direction handle from forward to backward and hold it for at least 10 seconds;

[0167] DMI displays a faulty text message about the directional handle, while ATP functions normally.

[0168] Change the direction handle from backward to forward and hold it for at least 10 seconds;

[0169] DMI outputs a fault message for the directional handle, while ATP operates normally.

[0170] During testing, follow the steps outlined above in sequence. If the system output matches the requirements definition in each step, it indicates that the steering handle malfunction can be accurately tested.

[0171] Furthermore, the present invention also provides a computer-readable storage medium having a computer program stored thereon, wherein when the computer program is executed by a processor, it implements the above-described test method for steering handle failure based on the TACN vehicle system.

[0172] Furthermore, the present invention also provides an electronic device, including a processor and a memory, wherein a computer program is stored in the memory, and when the computer program is executed by the processor, the above-described test method for steering handle failure based on the TACN vehicle system is implemented.

[0173] In summary, this invention designs test methods for steering handle malfunctions in both stationary and moving processes for heavy-haul trains and ordinary trains, based on train type and operating scenario. It is applicable to various scenarios, including heavy-haul and non-heavy-haul trains, and stationary and moving states. It can accurately detect steering handle malfunctions and output response actions to ensure train operation safety.

[0174] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0175] In the description of this invention, it should be understood that the terms "center," "height," "thickness," "upper," "lower," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," and "circumferential," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0176] In the description of this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0177] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0178] Although the present invention has been described in detail through the preferred embodiments above, it should be understood that the above description should not be considered as a limitation of the present invention. Various modifications and substitutions to the present invention will be apparent to those skilled in the art after reading the above description. Therefore, the scope of protection of the present invention should be defined by the appended claims.

Claims

1. A method for testing steering handle malfunctions, characterized in that, include: S1. Define the requirements in the TACN vehicle system, including defining the criteria for the TACN vehicle system to determine steering handle failure and the output actions when the steering handle fails. S2. Design various scenarios for steering handle failure, and test the TACN vehicle system's judgment and output actions in various scenarios to ensure that the TACN vehicle system's judgment and output actions are consistent with the requirements definition in various scenarios. The various scenarios of steering handle failure include steering handle failure when the train is stationary and when it is running. Step S1 includes the following steps: S1.1 The following two situations are defined in the TACN vehicle system as the basis for the TACN vehicle system to judge steering handle failure: When the train is stationary, the direction handle is simultaneously moved forward and backward for more than a time threshold. When the train exceeds the speed threshold, the system detects that the direction handle changes from forward to backward, or from backward to forward, and the duration of these changes exceeds the time threshold. S1.

2. Define the output action of the TACN vehicle system when it determines that the steering handle is faulty: When the TACN onboard system detects a steering handle malfunction, the DMI indicates a malfunction and the ATP outputs braking. After braking, the DMI prompts the driver to place the steering handle in the neutral position. After the driver confirms, a timer is started. If the neutral position is detected within the timer period, the steering handle malfunction is considered to have been resolved. When the steering handle malfunction is resolved and the train is at a stop, the DMI prompts the driver to release the brake. Otherwise, if the neutral position is not detected within the timer period, releasing the brake is not allowed.

2. The test method for steering handle failure as described in claim 1, characterized in that, Step S2 includes the following steps: S2.1 Test the steering handle malfunction when the train is stationary; S2.2 Test the direction handle malfunction of the test train in operation, including two malfunction scenarios: the direction handle changes from forward to backward and the direction handle changes from backward to forward.

3. The test method for steering handle failure as described in claim 2, characterized in that, Step S2.1 includes the following steps: S2.1.1 When the test direction handle moves forward and backward simultaneously, but the holding time is less than the time threshold, the TACN vehicle system detects no fault. S2.1.2 When the test direction handle moves forward and backward simultaneously, and the holding time is greater than or equal to the time threshold, the TACN vehicle system detects the fault and outputs the correct response action.

4. The test method for steering handle failure as described in claim 3, characterized in that, Step S2.1 further includes: S2.1.3 Repeat step S2.1.2 to ensure that the TACN vehicle system can still detect the fault and output the correct response action when the steering handle fails again.

5. The test method for steering handle failure as described in claim 2, characterized in that, Step S2.1 further includes the following steps: S2.1.4 When the test steering handle moves only forward or only backward, the TACN vehicle system detects no fault.

6. The test method for steering handle failure as described in claim 2, characterized in that, Step S2.2 includes the following steps: S2.2.1 When the test train is running at a speed higher than the speed threshold, if the steering handle is moved from forward to backward but the holding time is less than the time threshold, the TACN on-board system detects no fault. S2.2.2 When the test train is running at a speed higher than the speed threshold, if the steering handle is moved from forward to backward and the holding time is greater than or equal to the time threshold, the TACN on-board system detects the fault and outputs the correct response action.

7. The test method for steering handle failure as described in claim 6, characterized in that, Step S2.2 further includes: S2.2.3 Repeat step S2.2.2 to ensure that the TACN vehicle system can still detect the fault and output the correct response action when the steering handle fails again.

8. The test method for steering handle failure as described in claim 2, characterized in that, Step S2.2 further includes the following steps: S2.2.4 When the test train is running at a speed higher than the speed threshold, if the steering handle is moved from backward to forward but the holding time is less than the time threshold, the TACN on-board system detects no fault. S2.2.5 When the test train is running at a speed higher than the speed threshold, if the steering handle is moved from backward to forward and the holding time is greater than or equal to the time threshold, the TACN on-board system detects the fault and outputs the correct response action.

9. The test method for steering handle failure as described in claim 8, characterized in that, Step S2.2 further includes: S2.2.6 Repeat step S2.2.5 to ensure that the TACN vehicle system can still detect the fault and output the correct response action when the steering handle fails again.

10. The method for testing steering handle malfunction as described in claim 2, characterized in that, Step S2.2 further includes the following steps: S2.2.7 When the test train is running at a speed below the speed threshold, if the steering handle is moved from forward to backward or from backward to forward, the TACN on-board system detects no fault.

11. The method for testing steering handle malfunction as described in any one of claims 3-10, characterized in that, When testing each fault condition, the train is placed in the corresponding state, and the steering handle is placed in the corresponding state; When the TACN vehicle system detects no fault, the DMI does not indicate a fault, and the ATP works normally. When the TACN vehicle system detects a fault, its correct response is as follows: DMI indicates a fault, ATP outputs braking, and after braking, DMI prompts to put the steering lever in the neutral position; Click the OK button. If the steering handle returns to the neutral position within the timer period, and the DMI prompts that the brakes have been released, click the OK button again. The brakes will then be released. If the steering handle does not return to the neutral position within the timer period after clicking the confirmation button, the braking will not be relieved even if the confirmation button is clicked again.

12. The method for testing steering handle malfunction as described in claim 11, characterized in that, The steering handle malfunction includes steering handle malfunctions in both heavy-haul and non-heavy-haul trains. The correct response action specifically involves ATP output braking: for heavy-load trains, ATP outputs standard braking; for non-heavy-load trains, ATP outputs maximum standard braking.

13. The test method for steering handle failure as described in claim 1, characterized in that, The time threshold is 10 s.

14. The test method for steering handle failure as described in claim 1, characterized in that, The speed threshold is 5 km / h.

15. The test method for steering handle failure as described in claim 1, characterized in that, The timer duration is set to 60 seconds.

16. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by the processor, it implements the test method for steering handle failure as described in any one of claims 1-15.

17. An electronic device, characterized in that, It includes a processor and a memory, wherein the memory stores a computer program, which, when executed by the processor, implements a test method for steering handle malfunction as described in any one of claims 1-15.

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