Design of Signal Acquisition Circuit Based on ADS8364 in Power Quality Monitoring System

Power quality monitoring is an important means used to improve the power quality and depress failure in power supply system.The paper deals with the signal acquisition circuit,which is very important for the power quality monitoring system.It is designed based on ADS8364 and contains an input signal filter and an amplification circuit in its hardware,PLL technique is applied to realize logical control for system sampling and the synchronized request.With the circuit design,software of the system is designed and implemented.Practice shows that the design achieves the sampling precision and meets the needs of real-time requirement.