Research On Measurement And Control System Of Vehicle Electromagnetic Relay Based On LabVIEW

Many automobile electromagnetic relay manufacturers lack automated assembling and measurement equipment,and the assembly and measurement processes can only rely on handwork.Thus,not only the cost in both time consuming and man power is large,but also the production speed is very slow and the product quality is quite unstable.Therefore,the main purpose of this thesis is to develop a computer measurement and control system for automated assembly and measurement of automobile electromagnetic relays.It can help manufacturers automate the production process and promote production speed and product quality.The research is aiming at the auto parts manufacturers of the automotive electromagnetic relay processing which is required for assembly and testing automation,the design of computer measurement and control system.Not only the number of electromagnetic measurement items is integrated into a system of vehicle,but also automate the feeding,measuring,assembly,marking,good / bad product separation and measurement of data storage,which can quickly satisfy the relay BEOL assembly,inspection,good and bad product classification and marking.This system greatly improve the production efficiency and accurate detection results in the assembly and testing,which has showed satisfying results,and thus can help manufacturers to improve their technology and product competitiveness.The developed computer measurement and control system in this thesis employs the distributed monitoring and control system architecture which consists of a RS485 bus,a personal computer(PC) and several self-designed PIC control modules being include measurement and driving circuits,and the PC plays the role of master controller and the PIC control modules play the roles of slave controllers.The experiments approve that the developed system not only can functionally approach the automation in assembly and measurement,but also can successfully transmit measured datum to PC and save them as the usage of product resume.Furthermore,the measurement function can implement force sustain test on electrical terminal and electrical characteristic measurement for the Car-used electromagnetic relay.