基于CPLD的相位差测量方法研究及实现

RESEARCH AND REALIZATION OF PHASE MEASUREMENT BASED ON CPLD

针对传统相位测量方法测量精度不高、抗干扰能力差等缺点,采用复杂可编程逻辑器件CPLD和单片机的综合技术,应用CPLD进行相位和频率检测,单片机进行数据处理和显示,有效提高了检测精度和抗干扰能力。系统中的各种测量数据可通过液晶显示屏显示,并且具有日历,时间和掉电保护装置,具有良好的人机界面。

The precision and anti-interference ability of the traditional phase measuring means cannot satisfy the further requirement in many situations. The comprehensive technology involving CPLD and MCU is adopted. It uses CPLD to carry out measurement of phase and frequency. MCU accomplish data processing and display. The precision is high. The result of measurement can show through LCD.The system has good man-machine interface.