【作者】 廖家平； 张友奖； 姚铭；

【Author】 Liao Jiaopin Zhang Youjiang YaoMing (The school of Electrical & Electronic Engineering,Hubei University of Technology,Wuhan 430068)

【机构】 湖北工业大学电气与电子工程学院；

【摘要】 将正弦交流信号经过前端整形过零检测电路后变为方波信号,然后利用CPLD对两路信号相与后波形进行计数,利用单片机完成数据读取、处理、显示,并控制系统的运行。试验表明该系统测量得到的相位差结果精确,电路实现简单,可广泛应用于各种系统设备中。更多还原

【Abstract】 First we change the input signal into rectangle waveform after modulation and pass-zero detection,then choose the CPLD as the processor in counting the"and"operation of two input rectangle waveform.The SCM part mainly reads the I/O port,performs data processing,control the displays the result and keep the system working.It is validated in our lab test that it is a very efficient and simple system of exact phase difference measurement,and it can be widely used in many system devices.更多还原