基于CPLD和长度计的数字化微小位移检测的设计

Design of Digital Detecting Minute Displacement Based on CPLD and Length

设计一种基于CPLD和长度计的数字化微小位移检测的系统模块.增量型长度计作为测量微小位移传感器,采用CPLD芯片作为实时信号处理芯片,通过在CPLD里编写的算法软件把增量的脉冲信号转换成为位移量,可通过总线方式将计算得到的位移量传给控制芯片.算法中包含对干扰信号的判断和滤除及微小位移变化量的计算方法.

Design a system module of digital detecting minute displacement based on CPLD and length gauge.Incremental length gauge is used to be the sensor of measuring minute displacement.CPLD deals with the real time signal processing.The software compiled in CPLD will transform the incremental pulse signal to displacement quantity,and send the displacement quantity to main CPU by data BUS.Arithmetic of software will include the estimate and filter the disturb and how to count the minute displacement.