基于S3C2440的多道脉冲幅度分析器硬件设计

›› 2013, Vol. 26 ›› Issue (8): 102-.

基于S3C2440的多道脉冲幅度分析器硬件设计

王胜芹,龚学余

(南华大学核技术学院,湖南衡阳 421001)

出版日期:2013-08-15 发布日期:2013-09-25
通讯作者: 龚学余(1962—),男,博士,教授,博导。研究方向:核探测技术,等离子体物理。E-mail:gongxueyu@126.com
作者简介:王胜芹(1978—),女,硕士,讲师。研究方向:核探测技术。

Hardware Design of the Multi-Channel Pulse Amplitude Analyzer Based on S3c2440

WANG Shengqin,GONG Xueyu

(School of Nuclear Science and Technology,University of South China,Hengyang 421001,China)

Online:2013-08-15 Published:2013-09-25

摘要/Abstract

摘要：

传统的以单片机为核心的多道脉冲幅度分析器集成度低、软硬件设计难度大、系统升级困难。文中介绍了一种以高性能32位嵌入式处理器S3C2440处理为核心的多道脉冲幅度分析器的硬件设计方案,电路主要包括甄别电路、峰值扩展电路、控制电路和A/D转换电路。甄别电路通过设定阈值去除低能噪声信号,峰值检测电路进行输入信号的峰位检测和峰值扩展,A/D转换电路实现输入信号的模拟-数字量的转换。控制电精确控制了整个电路的工作时序。测试表明,该系统具备良好的微分非线性和积分非线性、速度快、稳定性好、可用于实际工作。

关键词: 多道脉冲幅度分析器;S3C2440;峰值检测

Abstract:

The traditional multi-channel pulse amplitude analyzer based on single chip computer with low integration is difficult to design or update.A multi-channel pulse amplitude analyzer based on 32 bits microcontroller S3c2440 is proposed in this paper.The major circuit components are described including the pulse discriminator circuit,peak detector circuit,logic control circuit and A/D converting circuit.The discriminator circuit can remove low energy noise by setting a Threshold Voltage.The peak detector circuit can detect when the peak voltage come,and expands the time of peak voltage to adapt to the A/D convertor.The control circuit can precisely control the working time sequence of the whole system.The A/D convertor converts the Analog signal into digital signal.The experimental results show that the instrument can be used in practical fields for its lower INL/DNL,high-speed and stable performance.

Key words: multi channel pulse amplitude analyze;S3C2440;peak detector

中图分类号:

TM935.43

王胜芹,龚学余. 基于S3C2440的多道脉冲幅度分析器硬件设计[J]. , 2013, 26(8): 102-.

WANG Shengqin,GONG Xueyu. Hardware Design of the Multi-Channel Pulse Amplitude Analyzer Based on S3c2440[J]. , 2013, 26(8): 102-.