摘要
文章设计了一种基于现场可编程门阵列(Field Programmable Gate Array,FPGA)的多通道加速度计频率信号采集系统,以FPGA芯片Artix7 XC7A35T为核心,利用FPGA实现高精度、多通道频率测量功能,通过FT232H芯片将采集数据传输至计算机存储.测试结果表明:该系统可以实现多达 12 通道的频率测量,测量精度能够达至 0.01 μs,可以实现 10～100 kHz范围内的频率测量,精度可达 1×10-4 Hz,在整个频率范围内测量精度一致.通过与Keysight 53230A高精度测频仪器数据对比,结果证明系统能够达到等精度测量的目的.
Abstract
This paper designs a multi-channel accelerometer frequency signal acquisition system based on field programmable gate array(FPGA),with the FPGA chip Artix7 XC7A35T as the core.The FPGA is utilized to realize high-precision,multi-channel frequency measurement functions.The collected data is transmitted to the computer for storage through the FT232H chip.The test results show that:the system can realize frequency measurement of up to 12 channels.The measurement precision can reach 0.01 μs and frequency measurement in the range of 10～100 kHz can be realized.The precision can reach 10-4 Hz with consistent measurement precision across the entire frequency range.Through comparison with the data of Keysight 53230 A high-precision frequency counter,it has been verified that the system achieves the goal of equal precision measurement.
基金项目
2023年市级科技计划自筹经费项目(2023011047)
河北省教育厅自筹项目(ZC2024051)
北华航天工业学院国防创新基金项目(GFCXJJ-2023-03)
维普
万方数据