Automatic vehicle-mounted electronic control unit CAN bus communication testing device and system

A vehicle-mounted electronic control and CAN bus technology, applied in the general control system, control/regulation system, test/monitoring control system, etc., can solve problems such as human error, influence of test result accuracy, and repetitive labor of test engineers, so as to reduce The effect of duplication of effort

Inactive Publication Date: 2015-01-21
CHINA FIRST AUTOMOBILE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the network test methods of different ECUs are basically the same, test engineers are mostly doing repetitive work
At the same time, it cannot be ignored that manual testing will inevitably introduce human errors, which will affect the accuracy of test results.

Method used

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  • Automatic vehicle-mounted electronic control unit CAN bus communication testing device and system
  • Automatic vehicle-mounted electronic control unit CAN bus communication testing device and system
  • Automatic vehicle-mounted electronic control unit CAN bus communication testing device and system

Examples

Experimental program
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Embodiment Construction

[0063] Such as figure 1 , 2 As shown, the hardware cabinet of the present invention is to test the program-controlled power supply, voltage stabilized power supply, network oscilloscope, bus data acquisition equipment CANcaseXL, bus interferometer CANstress, bus test board and test control board (NI board), test host, etc. The equipment is integrated in a cabinet for unified management. The test management software is installed in the test host, and the test management software controls the program-controlled power supply through the GPIB (General Interface Bus) interface; controls the high-precision network oscilloscope through the Ethernet (Ethernet) interface; controls the bus interference meter CANstress through the USB interface; controls the test through the USB interface Control board, test control board provides a series of IO output ports, these IO output ports can control the relay matrix of the bus test board. The program-controlled power supply is used for the po...

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Abstract

The invention relates to an automatic vehicle-mounted electronic control unit CAN bus communication testing device. A testing host of the device controls a programmable power supply to output different amplitudes of voltages according to working requirements of an ECU; physical layer testing signals of a CAN bus are output to a network oscilloscope to be displayed, and physical layer testing data are transmitted to the testing host through the network oscilloscope; ECU testing data are transmitted to the testing host through a bus data acquisition device; the testing host records, analyzes and evaluates the testing data of the ECU and the CAN bus to generate a test report. A bus interferometer is used for interfering with bus waveforms of the tested ECU in real time. The testing host controls on-off states of relays of a bus testing board card through a testing control card board to execute the bus fault injection operation. By means of the automatic vehicle-mounted electronic control unit CAN bus communication testing device, various defects of a manual test are overcome, unnecessary repeated labor of a vehicle-mounted network engineer is reduced, and the testing result is accurate.

Description

technical field [0001] The invention relates to vehicle controller testing software, in particular to a CAN bus communication automatic testing device and system for vehicle-mounted electronic control units for efficiently completing CAN network communication testing and network management testing. Background technique [0002] In today's motor vehicles, multiple electronic control units (ECUs) are usually installed, and each control unit is connected to a controller area network (Controller Area Network, CAN) to realize mutual cooperation. In the ECU development stage, the OEM will release the ECU communication requirement specification, ECU network management requirement specification and gateway routing requirement specification to the ECU supplier to constrain the ECU. After the ECU development is completed, the OEM will conduct a strict network test on the ECU to ensure that the ECU can work normally in the CAN network. At present, the network testing of OEMs is mainly...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B23/02
CPCG05B23/0256
Inventor 孟超张东波崔茂源马伯祥杨彦召李长龙
Owner CHINA FIRST AUTOMOBILE
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