Auto meter visual detecting system based on computer and detecting method thereof

Abstract

The invention discloses an auto meter visual detecting system based on a computer, comprising a light source, a detecting box body, a camera connected with a PC control system, and an analog signal generator connected with the PC control system, wherein the analog signal generator comprises a frequency circuit and a resistance circuit and is used for receiving commands sent by the PC control system so as to generate frequency and a resistance signal needed by meter detection; the PC control system comprises an input module, a position adjusting module, a meter dial plate identification module,a communication setting module, a camera target capturing module and an output module which are respectively connected with a PC. The position adjusting module promotes two stepping motors in a camera position adjusting mechanism to run by sending serial port commands; and the communication setting module is used for realizing Ethernet communication setting and serial port communication setting.The camera comprises an image displaying module and an image processing module. The invention also discloses a detecting method of the detecting system.

Description

technical field [0001] The invention relates to an automobile instrument performance detection system and a detection method based on machine vision technology, in particular to a computer-based automobile instrument visual detection system and a detection method. Background technique [0002] Automotive instruments include tachometers, speedometers, oil pressure gauges, water temperature gauges, and some also include barometers, voltmeters and ammeters. To judge whether its accuracy meets the national standard or the parameter requirements stipulated by the industry. At present, the domestic verification of automotive instruments mainly uses manual observation of the instrument panel pointer readings to judge whether the product is qualified or not. This judgment method is affected by human subjective factors such as human observation angle, observation distance and fatigue strength. The error is large and the reliability is not high. Moreover, the verification efficiency...

AI Technical Summary

Problems solved by technology

Using the detection system of the present invention for instrument verification solves the shortcomings of the current manual interpretation method, overcomes various errors caused by manual detection, and greatly improves the accuracy and efficiency of instrument verification

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