摘要PAGE\*MERGEFORMAT2PAGE\*MERGEFORMAT8摘要多通路信号采集电路研究与设计摘要近年来，随着信号采集技术的不断发展，人们对信号采集系统性能的要求越来越高。信号采集系统在日常生活中的应用也愈加广泛，比如交通检测、生命体征探测、天文望远镜星系探测、工业生产中检测成品等等。为了提高信号采集系统的功能，国内外众多生产厂商更加专注于研究采集卡。高性能采集卡的设计成为他们设计的重要任务。目前，国内外的数据采集系统常用的数据采集卡有RS-232、RS-485卡、PCI卡、ISA卡等。这些数据采集卡需要插在主机的的PCI插槽或ISA插槽上，使用不方便等。而通用串行总线(USB)HYPERLINK"http://www.hqew.com/tech/detail/usb.html"\t"_blank"是一种新的接口方式，具有连接方便、支持热插拔、无需外界电源、传输速度高、功耗低等优点。因此，基于USB的数据采集系统在通信、遥感、智能仪器表、工业自动化等领域得到了广泛应用。本文就是在信号采集系统的实际信号采集的背景下，侧重于分析研究多通路信号的采集。MPS-010601采集卡的软件部分应用VC++编写控制软件，对信号采集系统、模数转换、信号显示、信号通信等程序进行了设计。关键词：采集卡、多通道、信号采集AbstractMulti-channelSignalAcquisitionCircuitDesignAndAnalysisAbstractInrecentyears,withthedevelopmentofsignalacquisitiontechnology,peopleonthesignalacquisitionsystemperformancehavebecomeincreasinglydemanding.Signalacquisitionsystemindailylifehasbecomeevenmorewidespread,suchastrafficdetection,vitalsignsdetection,telescopegalaxydetection,detectionoffinishedindustrialproductionandsoon.Inordertoimprovethefunctionofthesignalacquisitionsystem,manydomesticandforeignmanufacturerstofocusmoreonresearchgrabber.High-performancecapturecarddesignhasbecomeanimportanttaskoftheirdesign..Atpresent,domesticandforeigndataacquisitionsystemusedindataacquisitioncardRS-232,RS-485card,PCIcard,ISAcard.ThedataacquisitioncardtobepluggedintohostthePCIslotorISAslot,inconvenientuseandthelike.USBuniversalserialbus(USB)isanewinterfacemode,hasconvenientconnection,supportshotplugandplay,noneedofexternalpowersupply,hightransmissionspeed,theadvantagesoflowpowerconsumption.Therefore,dataacquisitionsystembasedonUSBincommunication,remotesensing,intelligentmeter,industrialautomationandotherfieldshasbeenwidelyused.Thisarticleisinthecontextoftheactualsignalacquisitionsignalacquisitionsystem,focusingontheanalysisofmulti-channelsignalacquisition.MPS-010601acquisitioncardsoftwareapplicationwritteninVC++controlsoftware,signalacquisitionsystem,A/Dconversion,signaldisplay,signalcommunicationprogramdesign.Keywords:acqui