基于FPGA+ARM的多通道数据采集系统设计

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关键词：多通道切换；AD4630；FPGA+ARM；中断；SPI协议；小型化；采集精度中图分类号：TN919.5-34；TP274.2 文献标识码：A 文章编号：1004-373X（2026）09-0127-06

Design of multi-channel data acquisitionsystem based on FPGA+ARM

Liu Jiajia²，QiXue¹²，FanLei1，²，TanQiulin1，2 （1.KeyLaboratoryofMicro/NanoDevicesandSystems，North Universityof China，Taiyuan O3oo51，China; 2StateKe

Abstract：Inviewoftheexcessivesizeandinsuffientcoletionaccuracyoftetraditionaldataacquisitionsystems，this paper designs a multi-channel data acquisition system based on the FPGA ⋅+ ARM architecture.The system is tailored to meet the precise measurementrequirements forparameterssuch aspressureand temperature in the field of aerospace.Itcomprisesa powersupply module，achannel switching module，adataacquisitionmodule，andadata transmision module.Among them，the dataacquisitionmoduleutilizestheSOM-TT3Fasitscorecontroller，andintegratesasignalconditioningcircuit，a24-bit analog-to-digitalconversionchipAD4630，andeightmultiplexingchipsADG1607toenablesynchronousacquisitionofdataof 64channels.TheFPGA（field-programmablegatearray）achievesSPIcommunicationwiththeARMbyinteruptcontrol，andthe processeddatais transmitedtotheuppercomputerviathe UDPprotocol.Experimentsdmonstratethatthesystemcombines the characteristicsof highcolectionaccuracywithminiaturization，enablingstableoperationinharshenvironmentssuchashigh temperatureandhigh presure.Themulti-chanel switchingdesign ensures eficientacquisitionof multipledata streams，witha sampling relative accuracy not more than 0.23% .Featuring miniaturization and high collection accuracy，the proposed system provides a viable solution for precision testing in the field of aerospace.

Keywords：multi-channel switching; AD4630; FPGA + ARM; interruption; SPI protocol; miniaturization; collection accuracy

0 引言

在航空航天领域的精密测试中，压力参数的准确、高效采集是评估飞行器气动性能、结构强度与推进系统效率的核心环节。（剩余6760字）