便携式多道脉冲幅度分析器设计  

Design of Portable Multi-Channel Pulse Amplitude Analyzer

作　　者：张戈马 宋英明[1] 张泽寰 ZHANG Ge-ma;SONG Ying-ming;ZHANG Ze-huan(School of Nuclear Science and Technology,University of south China,Hengyang Hunan 421001,China)

机构地区：[1]南华大学核科学技术学院,湖南衡阳421001

出　　处：《核电子学与探测技术》2021年第5期752-756,共5页Nuclear Electronics & Detection Technology

摘　　要：设计了一款以单片机STM32为核心的便携式多道脉冲幅度分析器。硬件部分分为两级峰值保持电路和自动放电电路,使用Multisim14对硬件进行仿真验证分析。软件部分用STM32内置的ADC对输入信号进行数模转换,在此基础上完成峰值读取,道址转换,能谱显示,谱线平滑和数据存储。便携式多道脉冲幅度分析器具有高集成度、高精度、低功耗、低成本、便携的优势,能够满足γ能谱测量的要求。A portable multi-channel pulse amplitude analyzer with STM32 as the core is designed.The hardware part is divided into two-stage peak hold circuit and automatic discharge circuit.Multisiml4 is used to simulate and verify the hardware.The software part uses the STM32 built-in ADC to perform digital-to-analog conversion for the input signals,and on this basis completes peak reading,channel address conversion,energy spectrum display,spectral line smoothing and data storage.The portable multi-channel pulse amplitude analyzer has the advantages of high integration,high precision,low power consumption,low cost,and portability,and can meet the requirements of gamma energy spectrum measurement.

关 键 词：峰值保持电路 自动放电电路 STM32 能谱 

分 类 号：TH842[机械工程—仪器科学与技术]