LIN/CAN bus automotive parts testing solution

Summary

Hongke's LIN/CAN bus auto parts testing solution is an excellent integrated package based on the Baby-LIN series of products to help customers efficiently complete the inspection of vehicle parts quality, function, control, etc. during the testing and production stages.

background

1. What is the importance of auto parts testing?

Testing of automotive components plays a vital role in ensuring the safety, functionality and reliability of the vehicle. Vehicle parts for LIN/CAN communication mainly include motors such as window shakers, wipers, grilles, sunroofs, etc., as well as detection combination switches, seats, ambient lights, etc. Customers often need to verify their functions in the vehicle parts automatic test system performance and reliability, therefore a powerful LIN&CAN bus test simulation tool is needed.

2. How do Hongke’s test simulation tools show their prominence in automotive parts testing?

1. Accurate simulation: simulate LIN&CAN nodes to achieve master-slave simulation and analysis of the system

2. Parse LDF&DBC files: Support the parsing of LDF&DBC files to obtain comprehensive information about the ECU.

3. Configurable logical operations: configure logical operations, event triggering, and macro operations of LIN&CAN devices

4. Real-time monitoring and recording: control LIN&CAN equipment, monitor and record messages, and send specific commands

For the LIN&CAN bus simulation test of vehicle parts, Hongke proposed a solution based on the BabyLIN series products. Through the master-slave simulation and analysis of LIN&CAN nodes/systems, it supports event-based signal configuration, sequence control, error judgment and triggering actions. Help customers complete testing of vehicle parts quality, function, control, etc., and optimize the production quality of auto parts.

There are five products in the BabyLIN series, with different functions and working performance to meet the various functional requirements of customer testing. The products are all equipped with free LINWorks software, which establishes a friendly interaction between the functional operation of the test piece and the software interface. .

Application scenarios

Application scenario 1: Functional test of steering wheel switch

The functional test of the steering wheel switch mainly includes: button detection and backlight function, heating function, HOD function and other tests, which can be completed using the BabyLIN series products. If you use Baby-LIN-RM-III to detect car switches, you can achieve the following functions:

1. When a button on the steering wheel is pressed, the corresponding LIN signal is converted into a digital output event on BabyLIN RM-III and output to the PLC for logical judgment to detect the button function of the steering wheel.

2. The backlight and heating functions of the steering wheel switch can be assigned and run by writing an SDF program macro script, so that the steering wheel can be automatically activated or turned on manually after power is turned on.

Application case 2: Control testing of various types of motors

The control testing of motors in automobile sub-components (such as automobile sunroof motors and automobile air-conditioning motors) can be achieved using the BabyLIN series of products. Using different BabyLIN products, personalized motor control function testing can be completed:

1. Use Baby-LIN-RC-II to control the car sunroof motor. RC-II can control the motor with six buttons to achieve different operations, and can realize functions such as initialization, opening and closing of the glass motor and sunshade motor.

2. Use Baby-LIN-MB-II to control each motor of the car air conditioning system, send different serial port commands through PC or PLC to control the operation of one or more motors, and monitor the operating status of the motors at the same time.

Application scenario 3: Function test of RGB ambient light

Product testing of RGB ambient lights usually requires connecting multiple identical RGB ambient lights for simultaneous testing. The functional test plan for RGB ambient lights using BabyLIN products with four-wire diagnostics and automatic address assignment functions is as follows:

1. For testing on multiple identical nodes on the same LIN network, the automatic address allocation function needs to be implemented. For the implementation of automatic address allocation, 3C diagnostic messages can be used to request.

2. Use the function of SDF V3 version to unitize and modularize the instructions for automatic address allocation through Protocol. After assigning the Frame ID, different RGB lighting colors and brightness tests can be implemented.

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