Design and implementation of electric power data acquisition card

The accurate and high-speed measurement of electric power parameters has an important impact on the realization of automation of power network management. Aiming to the request of the electric power data acquisition, this paper proposed a design of data acquisition card based on PC/104 bus. The utilization of PLL (Phase Locked Loop) realizes the multi-channel and synchronous data acquisition. The application of the FIFO (First In and First Out) resolves the problem of data loss in high-speed data acquisition. The timing control of PC/104 bus and logic control are implemented by CPLD (Complex Programmable logic device). The application shows that this design is perfectly applicable to the electric power data acquisition.