基于S3C2440的多道脉冲幅度分析器硬件设计

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。

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

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.