基于FPGA的多道脉冲幅度分析器的设计

摘要

This paper presents a method of FPGA (Field-Programmable Gate Array) based on the mul-ti-channel pulse amplitude analyzer (MCA) design.In terms of hardware,A3P250 FPGA is the core de- vice.First of alI,A3P250 FPGA through the ADC sampling module,the data sample to FPGA internal,then make use of peak modules to baseline discriminate and judge the pulse is coming.When a pulse arrival, seeking peak module use of comparison method to extract maximum pulse.Then open the spectrum module and it start into spectrum function.At the same time,the spectrum results and real time data will be sent to the computer.%介绍了一种基于FPGA（Field—Programmable Gate Array）的多道脉冲幅度分析器（MCA）的设计。硬件上使用A3P250FPGA作为核心器件。首先，A3P250FPGA通过ADC采样模块，将数据采样到FPGA内部，然后利用寻峰模块进行基线判别，判断脉冲是否到来。当有脉冲到来时，寻峰模块使用比较法提取脉冲的最大值，接着成谱模块启动成谱功能，与此同时将成谱结果及实时数据发送给计算机。