基于FPGA的脉冲参数测量系统

该系统是基于FPGA和单片机AT89S52的脉冲参数测试系统，能够测量脉冲信号的周期、频率、占空比、脉宽等参数。首 先由FPGA提供一个频率为50 MHz的信号源作为标准信号源，并在FPGA中构造2个32位的计数器，用来测量被测信号的各 个参数，最后将测量结果送入单片机中处理并显示。整个系统主要由按键电路、门控电路、2个32位计数器和显示电路等模块 组成。通过测试该系统抗干扰能力强，测量数据稳定可靠，测量精度高。

The Pulse Signal Measuring System Based on FPGA

The system is a pulse signal measuring system based on FPGA and microcontroller, and is capable of measuring the signal parameters such as the signal period, the frequency, the duty cycle and pulse width of an input pulse signal. A signal with a frequency of 50MHz is first provided by FPGA as the calibration signal, and two 32 bit counters is constructed in FPGA, so pulse signal parameters can be measured in FPGA, and measured data is transferred to microcontroller, and processed measurement result by microcontroller is displayed on LED. The whole system consists of key circuit, gating circuit, two 32 bit counters, and the digital display circuit so on. The system has strong anti-interference ability and can obtain stable and reliable data with a high degree of accuracy.