基于FPGA的电荷测量系统设计

Charge Measurement System Design Based on FPGA

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FPGA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。

It introduces a kind of charge measurement system based on FPGA. The system has a multi -chan- nel, high speed and high- precision data processing ability. The input signal was first amplified, formed, fil- tered by analog modulation circuit and then sent to ADC for deeper sampling, the sampled data was sent to FP- GA 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.