基于FPGA的多通道加速度计频率信号采集系统设计  

Design of multi-channel accelerometer frequency signal acquisition system based on FPGA

作　　者：李佳[1] 周晓玉 韦雪洁[1] 李万军[1] Li Jia;Zhou Xiaoyu;Wei Xuejie;Li Wanjun(North China Institute of Aerospace Engineering,Langfang 065000,China)

机构地区：[1]北华航天工业学院,河北廊坊065000

出　　处：《无线互联科技》2024年第6期87-89,共3页Wireless Internet Technology

基　　金：2023年市级科技计划自筹经费项目,项目名称:航天用惯性传感器高精度测频技术研究,项目编号:2023011047;河北省教育厅自筹项目,项目名称:航天军用惯性器件高精高稳自动测试装备研发及应用,项目编号:ZC2024051;北华航天工业学院国防创新基金项目,项目名称:石英加速度计高稳频率测试关键技术研究与应用,项目编号:GFCXJJ-2023-03。

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0.01μs,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。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 0.01μs 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.

关 键 词：多通道 等精度测量 加速度计频率 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]