便携式数字多道脉冲幅度分析器的设计  

Design of Portable Digital Multi-channel Pulse Amplitude Analyzer

作　　者：金伟正[1] 黄川 李劲[1] 罗义军[1] 高志帆 JING Weizheng;HUANG Chuan;LI Jin;LUO Yijun;GAO Zhifan(School of Electronic Information,Wuhan University;Suzhou Jiapu Technology Co.Ltd)

机构地区：[1]武汉大学电子信息学院 [2]苏州佳谱科技有限公司

出　　处：《仪表技术与传感器》2024年第9期48-52,共5页Instrument Technique and Sensor

基　　金：国家重点研发计划(2018YFB1201602-05)。

摘　　要：为便于野外测试,设计了一款便携式的数字多道脉冲幅度分析器。采用ARM+FPGA的设计方案,通过嵌入式Linux系统实现控制和用户交互。脉冲信号经调理电路处理后,由采样电路转为数字信号,并在FPGA中完成滤波成形等数字处理,最终由嵌入式系统处理并显示能谱图。采用银粉样品测试,全能峰处能量分辨率为2.80%,道址漂移在2个道址以内,能够满足设计要求。For field testing convenience,a portable digital multi-channel pulse amplitude analyzer was designed.Adopting the ARM+FPGA design scheme,control and user interaction were implemented through an embedded Linux system.After processing through conditioning circuits,pulse signals were converted to digital signals by the sampling circuit,and various digital processes,including filtering and shaping,were completed in the FPGA.The final spectrum was processed and displayed by the embedded system.Using silver powder samples for testing,the energy resolution at the full energy peak is 2.80%,and the channel drift is within 2 channel sites,which can meet the design requirements.

关 键 词：便携 数字脉冲幅度分析器 调理电路 FPGA 梯形滤波成形 嵌入式LINUX 

分 类 号：TL817[核科学技术—核技术及应用]