【摘要】 在前后沿甄别原理的基础上,对脉冲形状甄别电路进行了数字化设计,用高频脉冲计数方法测量信号脉宽,在CPLD内对各路信号进行甄别,实现了多路处理的集成。在信号甄别的过程中,用窗函数代替传统的单边甄别阈,解决了甄别电路处理超大信号的难题,大大降低了系统的误触发和误甄别率。此设计方案在HXMT望远镜电子学系统中得到了成功应用。更多还原

【Abstract】 This paper carries out the digital design for the pulse shape discriminatior,which integrates six inputs’ discrimination and processes them separately in CPLD,based on the front-rear-edge theory.A new method using high frequency pulse is adopted to measure the signal’s width.The traditional unilateral threshold is replaced by the window threshold in signal discrimination,which solves the module’s design difficulty in extra-large-signal processing,and thus the rate of error-trigger and error-discrimination is much reduced.This design has been applied successfully in HXMT’s electronic system.更多还原