一种多源多通道信号采集系统设计  

Design of a multi-source and multi-channel signal acquisition system

作　　者：朱紫萌 于洵[1] 王刚[2] 韩峰[1] ZHU Zimeng;YU Xun;WANG Gang;HAN Feng(School of Ordnance Science and Technology,Xi’an Technological University,Xi’an 710000,China;China Aerospace Aerodynamics Technology Research Institute,Beijing 100071,China)

机构地区：[1]西安工业大学兵器科学与技术学院,陕西西安710000 [2]中国航天空气动力技术研究院,北京100071

出　　处：《电子设计工程》2022年第2期126-132,共7页Electronic Design Engineering

摘　　要：针对弹载设备高速、高精度信号采集的需求,设计了一种基于FPGA的多源信号采集卡。该系统以XILINX-Spartan6系列为主控芯片,AD7606为模数转换芯片,USB2.0为数据传输协议,eMMC为数据存储,通过模块化进行硬件电路设计,大大减小了电路体积和功耗。在FPGA中用Verilog-HDL对逻辑控制进行编程,对AD7606的采集时序进行了优化,减小了采样间隔,提高了采样效率,实现了数据的高速高精度采集和传输。测试结果和实验数据表明,该系统可以满足十路不同源信号的并行采集和实时监测,可以达到100 kHz采样率。同时为满足弹载需求,可以将数据存储到采集卡,通过地面设备读取,存储时间可达4 h。Aiming at the requirement of high-speed and high-precision signal acquisition of missile-borne equipment,a multi-source signal acquisition card based on FPGA is designed. The system uses the XILINX-Spartan6 series as the main control chip,AD7606 as the analog-to-digital conversion chip,USB2.0 as the data transmission protocol,and eMMC as the data storage. The hardware circuit design is modularized,which greatly reduces the circuit volume and power consumption. The logic control is programmed with Verilog-HDL in FPGA,the acquisition timing of AD7606 is optimized,the sampling interval is reduced,the sampling efficiency is accelerated,and the high-speed and high-precision data acquisition and transmission are realized. The test results and experimental data show that the system can meet the parallel acquisition and real-time monitoring of ten different source signals,and the sampling rate can reach 100 kHz. At the same time,in order to meet the needs of the missile load,the data can be stored in the acquisition card and read through the ground equipment. The storage time can reach 4 h.

关 键 词：电路设计 时序逻辑优化 并行采集 多源信号 

分 类 号：TN495[电子电信—微电子学与固体电子学]