Parallel test system for vehicle-mounted electronic products

Abstract

The utility model discloses a parallel test system for vehicle-mounted electronic products, and belongs to the technical field of vehicle-mounted electronic product testing. Comprising a test platform connected with a plurality of vehicle-mounted electronic products, and the test platform comprises a power supply access port and a controller local area network signal access port; the power supply end of each vehicle-mounted electronic product is connected with the output end of the power supply access port, and the signal end of each vehicle-mounted electronic product is connected with the input end of the controller local area network signal access port; the controller local area network tool box is connected with the output end of the controller local area network signal access port; and the upper computer is connected with the controller local area network tool box. The technical scheme has the beneficial effects that by adopting the technical scheme, multiple samples can be tested at the same time, the equipment utilization rate and the test efficiency are improved, and the problem of repeated use of a power supply is avoided due to a common test environment.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle-mounted electronic product testing, in particular to a parallel testing system for vehicle-mounted electronic products. Background Art

[0002] Automotive electronic products are mainly composed of three parts: hardware modules, software modules, and mechanical structures. Manufacturers need to conduct system integration, relevant functional testing, performance testing, and aging testing before shipping them to the main manufacturers for vehicle production.

[0003] Currently, the integration of automotive electronics is becoming increasingly higher, and products have a large number of communication interfaces. For example, products such as automotive radar, HUD (Heads Up Display), and LED (Light Emitting Diode) headlights all have at least one power supply and signal interface. If multiple power supplies and CAN (Controller Area Network) interfaces are required, product aging testing requires additional power supplies and CAN tool boxes. Therefore, the existing test system platforms of various manufacturers can only test a single unit at a time, or use multiple power supplies and CAN tool boxes to form a complex test aging platform.

[0004] In the existing technology, the test platform cannot meet the international standard requirement of more than or equal to 3 test samples; the test environment has poor commonality and scalability; when encountering automotive electronic products with multi-channel CAN devices, multiple CAN tool boxes are required for testing, resulting in low utilization of test equipment. Utility Model Content

[0005] The purpose of this utility model is to provide a parallel testing system for vehicle-mounted electronic products to solve the above technical problems;

[0006] A parallel testing system for vehicle-mounted electronic products, comprising:

[0007] A test platform connected to a plurality of in-vehicle electronic products, the test platform including a power access port and a controller area network signal access port;

[0008] The power supply end of each of the vehicle-mounted electronic products is connected to the output end of the power access port via a power line, and the signal end of each of the vehicle-mounted electronic products is connected to the input end of the controller area network signal access port via a controller area network bus;

[0009] A controller area network tool box connected to the output end of the controller area network signal access port;

[0010] A host computer is connected to the controller local area network tool box.

[0011] Preferably, the input end of the power access port is connected to a power supply end, and the power supply end is a programmable power supply or a DC power supply.

[0012] Preferably, the power supply terminal of the vehicle-mounted electronic product includes KL30 and KL15.

[0013] Preferably, the first output end of the CAN signal access port is connected to the CAN tool box via a first signal line, and the second output end of the CAN signal access port is connected to the CAN tool box via a second signal line.

[0014] Preferably, the first input end of the power access port is connected to the positive pole of the power supply end, and the second input end of the power access port is connected to the negative pole of the power supply end.

[0015] Preferably, the vehicle-mounted electronic product is a vehicle-mounted radar.

[0016] Preferably, the host computer is a monitoring computer for displaying test results and backing up.

[0017] Preferably, the CAN tool box is a CAN protocol analysis tool.

[0018] The beneficial effects of the present invention are as follows: by adopting the above technical solution, a parallel testing system for vehicle-mounted electronic products is provided, which enables simultaneous testing of multiple samples, improves equipment utilization and testing efficiency, and the shared testing environment avoids the problem of repeated use of power supply. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a test connection diagram of multiple vehicle-mounted electronic products of the present utility model;

[0020] Figure 2 This is the internal connection block diagram of the utility model's multiple vehicle-mounted electronic product parallel testing platform;

[0021] Figure 3 This is a test connection diagram of two dual-channel vehicle-mounted electronic products of the utility model;

[0022] Figure 4 This is a block diagram of the parallel testing connection of two dual-channel vehicle-mounted electronic products of the utility model;

[0023] Figure 5 This is a connection block diagram for parallel testing of multiple dual-channel vehicle-mounted electronic products of the present utility model.

[0024] In the accompanying drawings: 1. Test platform; 2. Controller area network tool box; 3. Host computer; 11. Power access port; 111. Power supply end; 12. Controller area network signal access port; 4. Vehicle-mounted electronic products; 4a. First vehicle-mounted electronic product; 4b. Second vehicle-mounted electronic product; 4c. Third vehicle-mounted electronic product. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features therein can be combined with each other.

[0027] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, but they are not intended to limit the present invention.

[0028] A parallel test system for vehicle-mounted electronic products, such as Figures 1 to 5 Shown, including,

[0029] The test platform 1 is connected to a plurality of vehicle-mounted electronic products 4. The test platform 1 includes a power access port 11 and a controller area network signal access port 12;

[0030] The power supply end of each vehicle-mounted electronic product 4 is connected to the output end of the power access port 11 via a power line, and the signal end of each vehicle-mounted electronic product 4 is connected to the input end of the controller area network signal access port 12 via a controller area network bus;

[0031] A controller area network tool box 2 connected to an output end of the controller area network signal access port 12;

[0032] The host computer 3 is connected to the controller area network tool box 2.

[0033] In the prior art, aging tests are not performed or functional tests are treated as aging tests, and the test tooling does not fully cover the hardware modules, resulting in test blind spots in the hardware modules and the risk of component failure. Since the existing test platform tests one product at a time, the test efficiency is low and batch testing cannot be performed, affecting the manufacturing capacity of the product. Since the power interface of automotive electronic products 4 usually has one or more input terminals, if one sample is connected to one power supply, the utilization rate of laboratory equipment resources will be low.

[0034] Specifically, the present invention provides a parallel testing system for vehicle-mounted electronic products, which is used for testing 4 vehicle-mounted electronic products. It uses a common environmental testing device to reduce the repeated use of power supply and enables simultaneous testing of 6 samples, greatly improving testing efficiency.

[0035] More specifically, multiple vehicle-mounted electronic products 4 are connected to the test board, connected to the CAN tool box, and form an environmental aging test system with the host computer 3 to achieve the effect of simultaneous aging monitoring testing of multiple vehicle-mounted electronic products 4. Through the cooperation of the functional software of the product to be tested, 100% coverage of the hardware module can be achieved, reducing the blind spots of the hardware module test.

[0036] More specifically, the hardware PCBA test data results are packaged according to a specific software protocol and output to the test platform 1 through the CAN interface; the first vehicle-mounted electronic product 4a, the second vehicle-mounted electronic product 4b, the third vehicle-mounted electronic product 4c, the nth vehicle-mounted electronic product and the CAN signal are connected to the test platform 1; the controller local area network tool box 2 is responsible for uploading the test data results to the monitoring host computer; the host computer 3 is responsible for displaying the test results and backing them up.

[0037] In a preferred embodiment, the input end of the power access port 11 is connected to a power supply end 111 , and the power supply end 111 is a programmable power supply or a DC power supply.

[0038] Specifically, the power supply terminal 111 provides stable voltage and current, and the programmable power supply or DC power supply can provide stable voltage and current output, ensuring that the tested in-vehicle electronic product 4 can be tested under normal working conditions.

[0039] More specifically, the power supply end 111 can simulate the actual use environment, and the programmable power supply or DC power supply can simulate the vehicle battery power supply situation, making the test results more real and reliable.

[0040] More specifically, the power supply end 111 can measure and record the power consumption and current consumption of the vehicle-mounted electronic product 4 under different working states through a programmable power supply or a DC power supply to evaluate its energy efficiency and battery life.

[0041] More specifically, the programmable power supply or DC power supply of the power supply end 111 usually has functions such as overload protection and short circuit protection, which can prevent electronic products from being damaged due to power supply problems during the test process.

[0042] In a preferred embodiment, the power supply terminal of the vehicle-mounted electronic product 4 includes KL30 and KL15.

[0043] Specifically, KL30 is the vehicle's permanent power source, also known as the main power source, which is usually connected to the positive terminal of the vehicle's battery and provides stable voltage and current to the vehicle's electronic products 4; KL30 will provide power when the vehicle is started and will continue to provide power even after the vehicle is turned off until the vehicle's battery is exhausted or the KL30 is disconnected.

[0044] More specifically, KL15 is the vehicle's switching power supply, also known as an auxiliary power supply. It is usually connected to the vehicle's ignition switch and provides power only when the ignition switch is turned on. The function of KL15 is to control the on-off state of the on-board electronic product 4. When the ignition switch is turned off, KL15 will cut off the power supply and put the on-board electronic product 4 into standby or shutdown state to save energy and protect the electronic product.

[0045] To be more specific, since the vehicle-mounted electronic product 4 usually has more than one circuit input, such as KL30, KL15 and Can communication, if the power cord and CAN bus are simply connected to the power supply and controller local area network tool box 2, a multi-output power supply or multiple power supplies and multiple controller local area network tool boxes 2 are required; the present application can realize synchronous parallel testing of 1 to multiple radars, solve the problem of low utilization rate of the above equipment, and thus improve test efficiency; multiple samples can be expanded to access through the power access port, and the internal part is in parallel state, and the output end of the first vehicle-mounted electronic product 4a is in parallel with the second vehicle-mounted electronic product 4b, the third vehicle-mounted electronic product 4c, and the nth vehicle-mounted electronic product.

[0046] To be more specific, multiple sample Can signals can be expanded through the controller local area network signal access port 12, and the connection method is in parallel; the power supply access port 11 is connected to an external programmable power supply or DC power supply; the controller local area network signal access port 12 corresponds to the external controller local area network tool box 2, and sends the test data to the controller local area network tool box 2, and then the controller local area network tool box 2 sends it to the host computer 3.

[0047] In a preferred embodiment, the first output end of the CAN signal access port 12 is connected to the CAN tool box 2 via a first signal line, and the second output end of the CAN signal access port 12 is connected to the CAN tool box 2 via a second signal line.

[0048] Specifically, the first signal line is H, ie, a high-order data line, and the second signal line is L, ie, a low-order data line, for transmitting CAN data.

[0049] More specifically, in the test of the vehicle-mounted electronic product 4, the function of connecting L and H to the CAN tool box is to communicate with the CAN bus of the vehicle under test through the controller local area network tool box 2. Through this connection method, the data on the vehicle's CAN bus can be monitored, read and sent, and the vehicle's CAN network can be diagnosed and debugged.

[0050] More specifically, the CAN tool box can also communicate with the CAN bus of the vehicle under test to perform operations such as data collection, fault diagnosis and parameter configuration.

[0051] In a preferred embodiment, the first input end of the power access port 11 is connected to the positive electrode of the power supply end 111 , and the second input end of the power access port 11 is connected to the negative electrode of the power supply end 111 .

[0052] Specifically, the normal operation of the vehicle-mounted electronic product 4 can be ensured, and malfunction or damage caused by unstable or insufficient power supply can be avoided.

[0053] In a preferred embodiment, the vehicle-mounted electronic product 4 is a vehicle-mounted radar.

[0054] Specifically, on-board radar is used to detect obstacles around the vehicle, including other vehicles, pedestrians, buildings, etc., to ensure that the vehicle can promptly detect and avoid potential collision risks during driving; by processing and analyzing radar signals, it can monitor the environment around the vehicle in real time and provide safety measures such as warnings or automatic braking.

[0055] More specifically, vehicle-mounted radar helps drivers provide real-time obstacle detection and distance measurement while driving to avoid collisions and accidents. Vehicle-mounted radar can play a role in different driving scenarios, such as reversing, merging, blind spot detection, etc., to improve driving safety and comfort.

[0056] In a preferred embodiment, the host computer 3 is a monitoring computer for displaying and backing up test results; the CAN tool box 2 is a CAN protocol analysis tool.

[0057] Specifically, the host computer 3 is used to display the test results of the vehicle-mounted electronic products 4 and back up the test data; it can monitor and display various indicators and results during the test in real time through connection with the test equipment. At the same time, the host computer 3 can also back up the test data for subsequent analysis and comparison.

[0058] More specifically, the Controller Area Network Tool Box 2 is a controller area network protocol analysis tool. CAN is a communication protocol widely used in automotive electronic systems to enable communication between various electronic control units within the vehicle. The Controller Area Network Tool Box 2 can monitor and analyze CAN communications by connecting to the vehicle's CAN bus.

[0059] More specifically, the Controller Area Network Toolbox 2 can monitor data transmission on the CAN bus in real time, including the sending and receiving of data frames, as well as the content and format of the data; and analyze the CAN communication protocol. The Controller Area Network Toolbox 2 parses the CAN communication protocol and analyzes the structure and meaning of CAN data frames to help engineers understand and debug CAN communication problems.

[0060] More specifically, the Controller Area Network Tool Box 2 detects errors and faults on the CAN bus, such as erroneous data frames and communication timeouts, to help engineers troubleshoot and repair problems. It monitors the status of the vehicle's electronic systems. By monitoring the data on the CAN bus, the Controller Area Network Tool Box 2 can understand the status of the vehicle's electronic systems, such as engine speed, vehicle speed, fuel consumption, and other information. It plays a role in monitoring and analyzing CAN communications during the testing of in-vehicle electronic products 4, helping engineers perform testing and troubleshooting.

[0061] In the first embodiment, two dual-channel vehicle-mounted electronic products 4 are connected to the test platform 1. The power end of each vehicle-mounted electronic product 4 is connected to the output end of the power access port 11 through a power cord, and the signal end of each vehicle-mounted electronic product 4 is connected to the input end of the controller area network signal access port 12 through a controller area network bus. The CAN signal is connected to the controller area network signal access port 12 through the controller area network tool box 2. The other end is connected to the PC end to collect logs, that is, the host computer 3 collects logs, and the vehicle-mounted electronic products 4 are tested in parallel, avoiding repeated use of power.

[0062] In the second embodiment, multiple dual-channel vehicle-mounted electronic products 4 are connected to the test platform 1, and the power end of each vehicle-mounted electronic product 4 is connected to the output end of the power access port 11 through a power cord. The signal end of each vehicle-mounted electronic product 4 is connected to the input end of the controller local area network signal access port 12 through a controller local area network bus. The CAN signal is connected to the controller local area network signal access port 12 through the controller local area network tool box 2, and the other end is connected to the PC end to collect logs, that is, the host computer 3 collects logs. It can support 6 vehicle-mounted electronic products 4 for testing at the same time, meets the international test quantity standards, improves the equipment utilization and test efficiency, and the shared test environment avoids the problem of repeated use of power supply and has strong scalability; and requires manual supervision, thereby improving the work intensity and work efficiency of the staff and reducing costs.

[0063] In summary, the utility model provides a parallel testing system for vehicle-mounted electronic products, which is used for testing vehicle-mounted electronic products 4. Compared with the prior art that can only perform single-unit testing, the present application can flexibly perform hardware wiring and host computer software configuration according to the interfaces of different vehicle-mounted electronic products 4, that is, convert the general environmental aging test platform into a dedicated vehicle-mounted electronic product 4 aging test platform; for example, electronic product A has 1 CAN and two power inputs KL30 and KL15. When wiring, it only needs to correspond one to one with the test platform, and the host computer software setting can perform multi-channel testing; according to the number of test samples, the number of power interfaces and CAN interfaces can be appropriately increased, and the one-time environmental aging platform supports multiple products to be tested for aging, thereby improving the aging test efficiency of the products; this parallel testing system can be unmanned, thereby improving the work intensity and work efficiency of the staff.

[0064] The above description is only a preferred embodiment of the present invention and does not limit the implementation method and protection scope of the present invention. For those skilled in the art, it should be aware that all solutions obtained by equivalent substitutions and obvious changes made using the description and illustrations of the present invention should be included in the protection scope of the present invention.

Claims

1. A parallel testing system for vehicle-mounted electronic products, characterized in that: include, A test platform (1) is connected to a plurality of vehicle-mounted electronic products (4), wherein the test platform (1) comprises a power supply access port (11) and a controller area network signal access port (12); The power supply end (111) of each of the vehicle-mounted electronic products (4) is connected to the output end of the power access port (11) via a power line, and the signal end of each of the vehicle-mounted electronic products (4) is connected to the input end of the controller area network signal access port (12) via a controller area network bus; A controller area network tool box (2), connected to the output end of the controller area network signal access port (12); A host computer (3) is connected to the controller area network tool box (2).

2. The parallel testing system for vehicle-mounted electronic products according to claim 1, characterized in that: The input end of the power access port (11) is connected to a power supply end, and the power supply end is a programmable power supply or a direct current power supply.

3. The parallel testing system for vehicle-mounted electronic products according to claim 1, characterized in that: The power supply terminal (111) of the vehicle-mounted electronic product (4) includes KL30 and KL15.

4. The parallel testing system for vehicle-mounted electronic products according to claim 1, characterized in that: The first output end of the controller area network signal access port (12) is connected to the controller area network tool box (2) via a first signal line, and the second output end of the controller area network signal access port (12) is connected to the controller area network tool box (2) via a second signal line.

5. The parallel testing system for vehicle-mounted electronic products according to claim 2, characterized in that: The first input end of the power access port (11) is connected to the positive pole of the power supply end, and the second input end of the power access port (11) is connected to the negative pole of the power supply end.

6. The parallel testing system for vehicle-mounted electronic products according to claim 3, characterized in that: The vehicle-mounted electronic product (4) is a vehicle-mounted radar.

7. The parallel testing system for vehicle-mounted electronic products according to claim 1, characterized in that: The host computer (3) is a monitoring computer used to display test results and perform backup.

8. The parallel testing system for vehicle-mounted electronic products according to claim 1, characterized in that: The controller area network tool box (2) is a controller area network protocol analysis tool.

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