基于FPGA的多道脉冲幅度分析器设计

摘要

针对核辐射能谱测量，介绍了一种基于 FPGA 的多道脉冲幅度分析器的设计。通过滤波成形、程控放大、A/D 采样、数据处理等硬软件模块的设计，实现对核探测器输出信号的模拟变换和数字量化。采用 Flash FPGA 作为数字核信号处理器，设计了滤波、寻峰、道址计数、数据存储等模块，实现对核能谱的获取。最后通过 UART 协议实现数字多道与 PC 端能谱分析软件的通信，并完成能谱分析。%This paper introduces a multi-channel pulse amplitude analyzer which is based on FPGA . Shaping , programmable am-plification , A/D acquisition and data deal modules are designed in order to realize the nuclear detector simulation transformation . Using Flash FPGA as the nuclear signal processor, the modules of filter, peak find, counter and memory are designed to get nuclear energy spectrum. And then, the communication of digital multi-channel and PC energy spectrum analysis software is achieved by UART.