基于FPGA的电荷测量系统设计

摘要

It introduces a kind of charge measurement system based on FPGA.The system has a multi-channel,high speed and high-precision data processing ability.The input signal was first amplified,formed,filtered by analog modulation circuit and then sent to ADC for deeper sampling,the sampled data was sent to FPGA for peak seeking processing,after that transmitted to the upper machine through the USB bus.The System design mainly includes the front end of the analog signal conditioning,ADC analog-to-digital conversion,FPGA and USB interface.At the end of the article the whole system test results are presented.%介绍了一种基于FPGA的电荷测量系统.该系统具有并行、高速、高精度的数据处理能力.系统输入信号首先经过模拟调理电路放大、成型、滤波,然后送给ADC进行采样,采样后的数据送到FP-GA内部进行处理,最后通过USB总线传送到上位机.系统设计主要包括前端模拟信号的调理部分、ADC模数转换部分,FPGA处理和USB接口部分.最后给出了整个系统的测试结果.