Automobile instrument driving information automatic testing system based on CAN bus and vision detection

Abstract

An automobile instrument driving information automatic testing system based on a CAN bus and vision detection comprises a computer, an instrument clamp, a three-axis movable camera support, a dark box for vision detection, a server, a high-speed camera, a controller, a program control power source, a digital multimeter, a program control resistor control board, a relay control panel and a CAN bus interface device, wherein the program control power source, a program control resistor, the digital multimeter and a relay are controlled through the controller, a database can be analyzed through the CAN bus interface device, a periodical transmitting message is defined through the message of the database, a signal value is changed, monitored and detected, the pointer deviation angle displayed by an electronic instrument of the driving information of an automobile to be detected, the displayed numerical value, the backlight color and the backlight brightness are recognized through automatic vision detection software, and a final result is judged by comparing the pointer deviation angle, the displayed numerical value, the backlight color and the backlight brightness with expected values. Through the system, the testing efficiency is improved, the labor cost for testing is saved, the testing quality is improved, and the hardware erecting cost can also be saved.

Description

Technical field: [0001] The invention relates to the field of electricity, in particular to an automobile instrument testing technology, in particular to an automatic test system for driving information of an automobile instrument based on CAN bus and visual detection. Background technique: [0002] Automotive driving information electronic products need to pass the test during the production process, and the angle of instrument pointer deviation and the value displayed on the display screen need to be tested. In the prior art, manufacturers use test devices to test automotive driving information electronic products, and run Vector's CANoe / CANalyzer and Intrepid's Spy3 programs on the industrial computer, and in Vector's CANoe / CANalyzer and Intrepid's Spy3 programs, each test The project can only be carried out manually, and only some CAN messages can be automatically controlled by automation scripts. At the same time, the angle of instrument pointer deviation and the value...

AI Technical Summary

Problems solved by technology

[0003] The object of the present invention is to provide a kind of automatic test system of driving information of automobile meter based on CAN bus and visual detection, described this automatic test system of driving information of automobile meter based on CAN bus and visual detection will solve the problem of driving information in the prior art. Information electronic products need to be manually tested, the test cycle is long, it takes up a lot of manpower and man-hours, and the technical problems of unstable test quality

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