基于单片机的微位移测量系统的设计

On this paper a system of measuring micro-displacement is designed, this system is composed of the following several components: CCD laser displacement sensor is used by measuring micro-displacement, and then the voltage signal is A/D conversed by AD7705 and calculated by AT89C51 processor ,and at last the measuring value is showed by LED. Range of this system of measuring displacement is -5mm～+5mm,and its accuracy is 1μm。The display of this system is clear, and its response is quick, and it is keen and stable, and it is simple and cheap, so it is used widely.