摘要
介绍了单片机控制的电力参数三路同步信号采集系统 ,利用电力线MODEM器件ST75 36和单片机 89C1 96以及多机通讯技术进行电力参数采集系统设计 ,其特点是可以不占用其它通讯电缆。给出了系统的电路原理图 ,系统应用了锁相环技术 ,提高了采集精度 ,采用了AD7874、ST75 36等新器件 ,简化了外围电路 ,提高了系统的稳定性。
Channel synchronized signal collecting system for power system parameter controlled by SCM is introduced,which adopts power line MODEM divice ST 7536,SCP 80c196KC and multi-computers.communication technology.This system doesn't use the other cables.The circuit of electric principle is presented,The collecting accuracy has been raised by applying phase-locking technique,and the peripheral circuit of system has been simplified,and its stability has been enhanced by using new MSI unit AD 7874 and ST 7536.
