基于PCC的交流采样的设计与实现

交流采样是按一定规律对被测信号的瞬时值进行采样．再按一定算法进行数值处理，从而获得所需电量信息的测量方法，可省去电量变送器等硬件设备、减少装置的体积、用软件功能代替其硬件功能、降低了系统成本、提高了实时性、保证了对交流电参量的采集精度和稳定性。应用B＆R的2005系列的IP161模块实现交流采样，介绍了硬件设计、工作原理及几项关键技术。

Design and Implementation of AC Sampling Based on PCC

The AC sampling is designed to sample instan-taneously the measured signal by a certain law, and then process the signal sampled by a certain numerical algorithm to obtain the required information. By replacing hardware functions with software functions, this system helps save hardware equipment like transmitters and reduce the size and cost of the device, and improves the real-time performance and therefore ensures the accuracy and stability of the sampling of AC parameters. In the paper, the B&R 2005 Series IP161 module is used to realize the AC sampling and the hardware design, operating principles and a few of key technologies are introduced.