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Electrical test system and method of automotive body based on CAN bus

A CAN bus and automobile body technology, applied in the field of automobile network testing, can solve the problems of low implementation efficiency, long development cycle, and inability to monitor real-time information of electronic controllers, and achieve the effects of improving efficiency, convenient operation, and shortening development time

Active Publication Date: 2010-02-03
EON CHINA (BEIJING) TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional CAN network test implementation is basically to connect the developed ECU (electronic controller) to the real vehicle for test verification. Engineers use test tools to complete signal collection, and then take the data back to the laboratory for analysis, and cannot Monitoring of real-time information from electronic controllers
The implementation efficiency of this kind of test is low, which leads to a long development cycle of the ECU, and because there are many electrical equipment in the whole body, the connected wiring harness is also very large. Conduct real-time electrical performance testing to check the continuity of the body wiring harness

Method used

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  • Electrical test system and method of automotive body based on CAN bus
  • Electrical test system and method of automotive body based on CAN bus
  • Electrical test system and method of automotive body based on CAN bus

Examples

Experimental program
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Effect test

Embodiment 1

[0034] Embodiment one: the test of the electrical function of the left car door is as follows:

[0035] Enter the electrical function test unit in the CANoe software, operate the physical switch of the left door on the car body test platform, the switch signal is sent to the electronic controller of the left door, and the electronic controller of the left door performs corresponding operations on the door and window lifting motor. At this time, The information collection module receives the signal from the electronic controller of the left car door, and then collects the electrical performance data of the door and window lifting motor for the path where it is located. The data acquisition unit in the electrical test unit of the upper computer can display the collected data in real time in the form of charts, and store the data in the background database in real time, and at the same time, the data analysis unit calls the collected data of the database for offline analysis.

Embodiment 2

[0036] Embodiment 2: The test and simulation of the electrical function of the body light are as follows:

[0037] Enter the CAN bus simulation unit in the CANoe software, operate the simulated light switch, send a signal to the light controller according to the customized CAN2. The electrical performance data of the lamp in the channel; at this time, the upper computer selects the channel where the lamp is located, and sets the collected voltage, current range and collection frequency, and the data acquisition unit will read the data collected by the underlying hardware, store it in the database, and display it in a graph displayed in real time. The real-time information of the lighting controller can be monitored in real time through the information monitoring unit, and the node simulation unit can simulate the lighting controller. In addition, our host computer software simulates the physical load on the bench, that is, the real-time status of the object can be displayed i...

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Abstract

The invention relates to an electrical test system and a method of an automotive body based on a CAN bus, the method establishes a test platform of the automotive body with one or a plurality of electronic controllers and loads and is provided with a sampling circuit between each electronic controller and the corresponding load, the sampling circuits collect electrical performance data of the loads, then the electrical performance data is transmitted to an upper computer located by a CANoe card through the high-speed CAN bus for carrying out electrical function test, and information of the electronic controllers is transmitted to the upper computer located by the CANoe card through a low-speed CAN bus for carrying out real-time information monitoring. The method is convenient to operation,can complete signal collection and realize the real-time information monitoring of the electronic controllers and has the advantages of improving test efficiency, shortening ECU development time andreducing development cost.

Description

technical field [0001] The invention relates to an automobile network testing technology, in particular to a CAN bus-based electrical testing system and method for an automobile body. Background technique [0002] The Controller Area Network (CAN) bus is a serial data communication bus developed by the German Bosch company in the early 1980s to solve the real-time data exchange between many control units and test instruments in modern automobiles. CAN bus technology has been developed quite mature, and it has the characteristics of high cost performance, high reliability, high real-time performance and suitable for working in harsh electrical environments, and has been widely used in the automotive industry. Its good operating characteristics, high reliability and unique design are very suitable for the mutual communication between electronic control units (electronic controllers) of modern automobiles, and better meet the real-time and reliability requirements of automobile...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B23/02
Inventor 史国军
Owner EON CHINA (BEIJING) TECH CO LTD
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