基于ATmega16的数字光栅位移测量系统

摘要

光栅尺测量系统在当今测量系统中占有很大的比重,以其高精度、高稳定性广泛应用在精密仪器加工和数控机床上。目前市场上与光栅尺匹配的数显表很多,但是大部分体积偏大而且需要手动人工按键。利用单片机的外部时钟触发功能设计的测量系统,对光栅尺的位移信息进行采集和解析,从而实现对光栅尺的读数功能。首先介绍了系统所用的器件,在详细分析系统功能的基础上,进行了系统硬件设计和系统软件设计,并基于实际中存在的问题提出了解决方案。设计的光栅位移测量系统具有价格低廉、接口方便、工作稳定等优点,基本满足光栅尺的读数要求。%The grating ruler measuring system has occupied a large proportion in measuring market today.Thanks to higher precision and better stability,it＇s widely used in exact apparatus processing and numerical controlled machine tool.Now in the market there are many number display meters matching the grating ruler,but most of them have a big volume and need to press buttons manually.A measuring system by using the external clock trigger function of SCM is designed,it can collect and analyze the displacement information,thus achieve the reading function.First the devices used in this system is described,basing on a detailed analysis of the system function,makes system hardware and software design,and proposes solutions according to the practical problems.The system has a lot of merits,such as cheap,facilitate interface and working steadily and so on.It essentially meet the design requirement which the paper was expected propose.