基于单片机的数字移相技术

两个相同频率信号之间的移相，在电力行业的继电保护领域中是一个模拟、分析事故的重要手段，是校验各种有关相位的仪器仪表、继电保护装置的信号源。因此，移相技术有着较为广泛的实用价值。本文通过介绍一种基于单片机的数字移相方法，来说明实现移相的原理。并对这种移相方法进行了分析。

Digital Phase shift based on single-chip

The phase shift technique is widely applied in the field of relay protection.The analogue and analysis approach to the failures can be obtained by phase shifting between signals with same frequency.Furthermore.the phase shift is also a signal source for phase calibration equipment and relay protector system.This paper describes the concept of phase shift by introducing an digital phase shift method based on single-chip.Specific analysis of the method is also included.