Detection device for an electric motor vehicle body controller

Abstract

The utility model provides a detection device for electric motor car body controller belongs to new energy automobile electronic control unit test technical field, include: 24V DC stabilized power supply is used for providing power supply for car body controller and detection device, input control module includes at least one physical input switch K1, one end of physical input switch K1 is connected with parallelly connected multichannel switch quantity input line, output control module includes at least one physical output switch K2, one end of physical output switch K2 is connected with parallelly connected multichannel output load power supply line, the other end of physical output switch K2 is connected with a load, and host computer is connected with car body controller through CAN communication bus. The utility model solves car body controller detection efficiency low, operation is complicated, and the problem such as difficult fault diagnosis, realizes synchronous, automatic detection and diagnosis to car body controller multichannel input switch quantity signal and output load power supply, improves detection efficiency and accuracy, and operation is simple, and feedback is intuitive.

Description

Technical Field

[0001] This utility model belongs to the field of testing technology for electronic control units of new energy vehicles, and specifically relates to a testing device for the body controller of electric locomotives. Background Technology

[0002] With the rapid development of the new energy vehicle industry, the functions of vehicle electronic systems are becoming increasingly complex and integrated. As one of the core control units of the vehicle electronic system, the body controller is responsible for managing a large number of input signals and powering output loads. Its reliability and stability directly affect the safety and comfort of the entire vehicle.

[0003] Traditional vehicle body controller testing methods typically employ manual techniques, using tools such as multimeters and oscilloscopes to measure and verify input signals and output loads one-to-one. This method has the following significant drawbacks: 1) Low testing efficiency, time-consuming and labor-intensive, especially unsuitable for the rapid testing needs of mass production lines; 2) Manual operation is prone to errors, potentially leading to missed detections or misjudgments; 3) Inability to simulate complex dynamic operating states; 4) Weak fault diagnosis capabilities, making it difficult to quickly pinpoint whether the problem lies with controller hardware failure, software configuration errors, or external wiring issues.

[0004] Therefore, there is an urgent need for an automated testing device that is highly integrated, easy to operate, highly efficient in testing, and has fault diagnosis capabilities, in order to meet the production and maintenance needs of modern electric locomotive body controllers. Utility Model Content

[0005] The technical problem solved by this utility model is to address the issues of low detection efficiency, cumbersome operation, and difficult fault diagnosis in existing vehicle body controller technologies. This utility model provides an integrated electric motor vehicle body controller detection device. This device achieves synchronous and automatic detection and diagnosis of multiple input switch signals and output load power supplies of the body controller, significantly improving detection efficiency and accuracy. It also features simple operation and intuitive feedback.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] A testing device for the body controller of an electric locomotive includes:

[0008] A 24V DC regulated power supply is used to provide operating power for the body controller and detection devices;

[0009] The input control module includes at least one physical input switch K1. One end of the physical input switch K1 is connected to a multi-channel switch input line connected in parallel. The multi-channel switch input line is used to connect to multiple switch input channels of the body controller. The other end of the physical input switch K1 is grounded.

[0010] The output control module includes at least one physical output switch K2. One end of the physical output switch K2 is connected to a multi-output load power supply line connected in parallel. The multi-output load power supply line is used to connect to multiple output load power supply channels of the body controller. The other end of the physical output switch K2 is connected to a load.

[0011] The host computer is connected to the body controller via a CAN communication bus and is used to send control commands to the body controller, receive and display the operating status data of the body controller and the current data of the output power supply line.

[0012] Further defining the above scheme, the number of physical input switches K1 in the input control module is one, and the physical input switch K1 simultaneously controls the switching of high or low levels of the fourteen switch input lines.

[0013] Further defining the above scheme, the number of physical output switches K2 in the output control module is one, and the physical output switch K2 simultaneously controls the on / off state of the power supply lines for the sixteen output loads.

[0014] As a further limitation of the above scheme, the load includes an indicator light bulb.

[0015] Advantages of this utility model compared to the prior art:

[0016] 1. Highly efficient integration: This solution integrates the detection of multiple (14) input switch signals and multiple (16) output load power supplies into one device. Synchronous triggering detection of all channels can be achieved through one input switch and one output switch, which greatly improves detection efficiency and is especially suitable for rapid detection on production lines.

[0017] 2. This solution is simple and intuitive to operate: it is operated by physical switches, which is in line with operating habits; the output status can be directly observed by the on and off of the light bulbs; the detailed status and parameters of all channels can be clearly and centrally observed through the host computer software interface, making the human-computer interaction user-friendly;

[0018] 3. This solution has a high degree of automation and intelligence: the host computer software can automatically execute the detection process, record data, and flexibly set parameters such as current protection threshold and flashing frequency according to load characteristics, and has strong software configuration and diagnostic capabilities.

[0019] 4. This solution provides accurate fault diagnosis: It can quickly distinguish fault types. The software interface can directly display which input signal is invalid and which output is abnormal (overcurrent, short circuit, open circuit). Furthermore, it can assist in determining whether the fault is hardware or software configuration by modifying the software protection parameters, which greatly facilitates the troubleshooting work of maintenance personnel.

[0020] 5. This solution is low in cost and highly practical: It uses common components (switches, light bulbs) combined with a standard host computer system, which has a simple structure, low manufacturing cost, and is easy to promote and use. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the hardware connection structure of the detection device of this utility model; Figure 2 This is a schematic diagram showing the input signal detection status displayed by the host computer software in an embodiment of this utility model;

[0022] Figure 3 This is a schematic diagram showing the normal power supply status of the output load displayed by the host computer software in an embodiment of this utility model; Figure 4 This is a schematic diagram showing the abnormal power supply status of the output load displayed by the host computer software in an embodiment of this utility model; Figure 5 This is a schematic diagram of the output channel current parameter configuration interface in the host computer software of this utility model embodiment. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0024] 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. Unless otherwise specified, 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.

[0025] Please see Figure 1-5 The embodiments of this utility model are described in detail below.

[0026] Example: See Figure 1As shown, this is a testing device for an electric locomotive body controller. This device can simultaneously test the input switching signals and output load power supply of the body controller via a host computer test software and CAN communication. By operating physical push-button switches, the device can control the switching of high / low input levels, and the on / off state of the output power supply can be visually detected by the illumination of light bulbs. Specifically, it includes: a 24V DC regulated power supply 1, an input control module 2, an output control module 3, a host computer 4, and a CAN communication bus 5.

[0027] The 24V DC regulated power supply 1 is used to provide operating power for the vehicle body controller 6 under test and the testing device;

[0028] The input control module 2 includes a physical input switch K1. One end of each of the 14 digital input lines is connected in parallel to the common terminal of the physical input switch K1, and the other end of the physical input switch K1 is grounded. The other end of the 14 digital input lines is used to connect to the 14 digital input channels of the vehicle body controller 6 under test. By toggling the physical input switch K1, the operator can simultaneously control these 14 input signals to switch between valid levels (such as high level) and invalid levels (such as low level), and send these signals to the corresponding input ports of the vehicle body controller.

[0029] The output control module 3 includes a physical output switch K2. One end of the physical output switch K2 is connected in parallel with 16 output load power supply lines, which are used to connect to multiple output load power supply channels of the body controller 6. The other end of the physical output switch K2 is connected to a load, which is an indicator light bulb. This output control module can simultaneously control the on / off state of all output circuits by operating a single switch. When an output channel of the body controller 6 is turned on and K2 is closed, current flows through the corresponding load unit, the power resistor consumes energy, and the light bulb lights up, providing a clear status indication.

[0030] The host computer 4 is connected to the body controller 6 via the CAN communication bus 5. It is used to send control commands to the body controller 6, receive and display the operating status data of the body controller 6 and the current data of the output power supply line.

[0031] The host computer 4 has built-in testing software configured to: display the real-time level status of each digital input channel; display the real-time power supply status and current value of each output load power supply channel; issue an abnormal alarm indication when the output current exceeds a preset upper limit current value or falls below a preset lower limit current value; and receive user input to set the current protection threshold, flashing period, or delay time parameters for each output load power supply channel. The testing software indicates abnormal alarms by: turning the display status of the corresponding channel red on the software interface, and / or recording a fault log.

[0032] This invention connects a 24V DC regulated power supply, host computer testing software, input control module, output control module, and output load together. It simulates the driver's button operation via a physical input switch to determine the on / off state of the input switch signal. Simultaneously, it collects the power supply current of the output load to determine its operating status. With the host computer testing software, it can automatically perform output detection. When an abnormality is detected in the body controller (invalid input, short circuit, open circuit, or overcurrent in the output), the host computer control interface clearly displays the error, facilitating quick troubleshooting by maintenance personnel to identify hardware faults in the body controller, external wiring, or electrical components.

[0033] Working principle: In this embodiment, the detection device and host computer test software of the body controller are mainly used to detect 14 switch input channels and 16 output load power supply channels.

[0034] 1. Body Controller Input Signal Detection: DI (0-7) and DI (8-13) correspond to 14 digital input channels. When the input control switch is on or off, two states will appear at the DI channel: a black dot indicates a valid input level (which can be identified as active high or active low as needed); no black dot indicates that no input signal was detected on that channel. Maintenance personnel can quickly troubleshoot based on the corresponding faulty channel. Specific process: The operator starts the test on the host computer software. When the physical input switch K1 is turned on, all 14 DI signals simultaneously become valid (e.g., high level). The body controller detects these changes in input signals and sends the status data of each DI channel collected by itself to the host computer via the CAN bus. After receiving the data, the host computer software... Figure 2 The interface shown displays the status of each channel (e.g., a black dot indicates that it is active). Operators and software can use this information to determine if the input functions of the vehicle body controller are working properly.

[0035] 2. Body Controller Output Load Power Supply Detection: 0-15 correspond to the 16 output load channels. After pressing the physical input button, the output load power supply channels 0-15 are automatically detected. A green indicator light for the corresponding channel indicates normal power supply, and the load indicator light will illuminate, with the number following it representing the current value (in mA). If a red indicator light appears or the load indicator light fails to illuminate, it indicates that the channel is not outputting power normally (hardware or software protection). Modifying the software protection configuration parameters can quickly determine whether the output channel is under hardware or software protection.

[0036] Specific process: The operator sends commands to the body controller 6 via the host computer software, causing it to sequentially or according to a set mode open each output channel. Simultaneously, the physical output switch K2 is closed. When an output channel is opened, current flows from the 24V power supply positive terminal—the body controller output channel—the body controller's internal power ground—power ground, forming a loop. The light bulb illuminates. The body controller typically has a current detection function, monitoring the current value of each output channel and sending this current data to the host computer via the CAN bus. The host computer software then... Figure 3 The interface displays the status (green light) of each output channel, real-time current value, and the visual status of the bulb. The software compares the read current value with the preset normal current range (upper and lower limits). If the current value is abnormal (too high indicates overcurrent or short circuit, too low or zero indicates open circuit or circuit break), a red alarm light will be displayed for that channel (e.g., ...). Figure 4 (As shown), and record the fault.

[0037] 3. Parameter Configuration and Advanced Diagnostics: The host computer testing software allows users to set the upper and lower current limits (in mA) based on the power characteristics of each output channel load, and provides software current protection for the corresponding output power supply channels. Additionally, the output power supply flashing cycle and delay time (in ms) can be set according to the operating requirements of the vehicle lights or other electrical equipment.

[0038] Specific process: Users can, as follows: Figure 5 The host computer software interface shown allows you to set different parameters for different output channels, such as upper and lower current limits, flashing period, and delay time.

[0039] In summary, this testing device combines the testing of the input switch signals and output load power supply of the body controller into a single device via host computer testing software and CAN communication. This device can detect the level status of multiple input switch signals and the operating status of multiple output load power supplies. Automatic testing can be initiated by pressing a physical input switch. The host computer testing software can also modify corresponding configuration parameters based on the load's operating status. Furthermore, it can diagnose abnormal conditions such as short circuits, overcurrents, or open circuits in the output power supply, providing direct feedback on the operating status of the body controller and significantly improving the testing efficiency of the body controller.

[0040] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0041] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A testing device for an electric locomotive body controller, characterized in that: include: A 24V DC regulated power supply (1) is used to provide working power for the body controller (6) and the detection device; The input control module (2) includes at least one physical input switch K1. One end of the physical input switch K1 is connected to a multi-channel switch input line connected in parallel. The multi-channel switch input line is used to connect to multiple switch input channels of the body controller (6). The other end of the physical input switch K1 is grounded. The output control module (3) includes at least one physical output switch K2. One end of the physical output switch K2 is connected to a multi-output load power supply line connected in parallel. The multi-output load power supply line is used to connect to multiple output load power supply channels of the body controller (6). The other end of the physical output switch K2 is connected to a load. The host computer (4) is connected to the body controller (6) via the CAN communication bus (5) and is used to send control commands to the body controller (6), receive and display the operating status data of the body controller (6) and the current data of the output load power supply line.

2. The detection device for an electric locomotive body controller according to claim 1, characterized in that: The input control module (2) has one physical input switch K1, which simultaneously controls the switching of high or low levels of 14 switch input lines.

3. The detection device for an electric locomotive body controller according to claim 1, characterized in that: The output control module (3) has one physical output switch K2, which simultaneously controls the on / off state of 16 output load power supply lines.

4. The detection device for an electric locomotive body controller according to claim 1, characterized in that: The load includes an indicator light bulb.

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