基于两级软件滤波算法的维根信号采集系统

针对核电站某区域智能安防系统中对维根码采集系统的电磁兼容性、实时性、可靠性等的苛刻需求,设计一套维根信号采集系统.通过构建基于共同体的单帧数据缓冲器,运用一种高效的两级软件滤波算法和数据缓冲器刷新机制,有效兼顾了实时性采集与滤波有效性的平衡.结果表明:该系统能实现维根码的高置信度、高实时性采集,提升系统的抗干扰性能和抑噪性能.

Wiegand Signal Acquisition System Based on Two-level Software Filtering Algorithm

For the strict demand of Wiegand code acquisition system about electromagnetic compatibility, real-time and reliability etc in a certain area of intelligent surveillance system for nuclear power plants, a set of Wiegand signal acquisition system was designed. By constructing a single frame data buffer based on community, an efficient two stage software filtering algorithm and data buffer refreshing mechanism was used to balance the effectiveness of real-time acquisition and filtering. The results show that the system can realize the Wiegand code with high confidence and high real-time acquisition, improve the anti-interference performance of the system and anti noise performance.