[电子设计精品] 基于labview的数字滤波器毕业设计

摘要随着电子测试技术的不断发展，测试技术正向自动化、智能化、数字化和网络化的方向发展。其中数字滤波器作为测试技术的重要工具而被广泛使用于各个领域。本课题是以数字虑波表软件设计为工程背景，主要对采集的波形数据进行相关处理，实现了相应的参数测量。虚拟仪器技术是基于计算机的仪器及测量技术。与传统仪器技术不同，虚拟仪器技术指在包含数据采集设备的通用计算机平台上，根据需要可以高效率地构建起形形色色的测量系统。对大多数用户而言，主要的工作变成了软件设计。虚拟仪器技术突破了传统仪器的局限，可以将G16780多G1461G2507处理的方G8873方G1427的应用于测量中，G5194G1000为自动测量和网络化测量G2031G17908G7477件。G20330G1820，本G16782G7003G1183G13473了虚拟仪器以及G47G68G69G57G44G40G58相关G11705G16794，G2045用虚拟仪器的G5332发平台G252G252G47G68G69G57G44G40G58G5332发的软件系统，主要包G6336G1128个G8181G3371G726数据采集、G7186G12046G16772G5417、数据G3250G6930、数据处理和数据G2010G7524。数据处理G8181G3371主要实现数字滤波和G2164G12395处理G1016大G2163能，可以G17885G6333不同的滤波器和G12395G2001数以G17878应不同的G5785G1929。参数的不同设G13634能G3827使G1461G2507G20069率不断变化。G4439是G980G12193测试仪器和系统的G8022G5577及相关软件。G2490G3818G13479G2524测试技术和仪器的G999G1006G11705G16794G1183G13473在G47G68G69G57G44G40G58实现虚仪滤波器虑测试G1461G2507。G1075是高G12573G19510G7669中机G7812、自动化G6122G1461G5699技术相关G999G1006G4410G10995G5529G4410的课程。关键词G726虚拟仪器、G47G68G69G57G44G40G58、滤波器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目录A68A69A70A71A724A73A74A75A76A77A78A79A80A815A73A82A75A76A77A78A79A83A84A857A73A86A75A87A88A80A8110A73A89A75A76A77A78A79A83A90A9112A73A92A75A93A94A95A96A97A98A99A100A10112A102A103A104A105A106A107A108A109A110A111A112A11313A102A114A104A93A94A95A96A97A115A11614A102A117A104A93A94A95A96A97A118A119A120A121A122A123A12419A102A125A104LABVIEWA126A12720A102A128A104A129A130A131A118A119A132A13322A134A135A136A137A138A13923A140A141A142A143A144A145A146A147A148A149A15023A140A151A142A152A153A143A144A145A154A15523A140A156A142A152A153A143A144A145A146A157A15823A140A159A142A152A153A143A144A145A146A141A160A157A161A162A163A164A165A16625A167A168A169A170A171A172A173A174A175A176A177A178A179A180A18126A182A183A184A185A186A187A18829A167A189A169A172A173A174A190LABVIEWA191A19229A193A194A195A196A197A198A199A200A201A202A203A204A205A206A207A208A209A21029A193A211A195A212LABVIEWA213A214A215A200A201A20231A216A217A218A219A219A220A221A222A223A22036A224A225A22637A227A22838A229A230A231A23239第一章引言现代计算机技术和信息技术的迅猛发展，犹如滚滚长江东流水，冲击着国民经济的各个领域，也引起了测量仪器和测试技术的巨大变革。人们曾为测量仪器从模拟化、数字化到智能化的进步而欣喜，也为自动测试技术的日新月异的发展所鼓舞，当今虚拟仪器技术的出现又使得测量仪器进步入了高科技的殿堂。与传统的仪器不同，虚拟仪器（VIRTUALINSTRUMENT）是基于计算机和标准总线技术的模块化系统，通常它是由控制模块、仪器模块和软件组成，在虚拟仪器中软件是至关重要的，仪器的功能都要通过它来实现，因G8504软件是虚拟仪器的G7692G5527，“软件G4613是仪器”，从G7424G17148G990G2465G7156了虚拟仪器的G10317G5461。从G7512成G7053G5347G990G16774，虚拟仪器G2499G2010为G3247大G12879G726GPIBG1319系G13479G7512、PCDAQG1319系G13479G7512、VXIG1319系G13479G7512和PXIG1319系G13479G7512。GPIBG1319系G13479G7512是通过GPIB总线G4570G1867G7389GPIBG6521G2487的计算机和仪器G19610成的测试系统。G1866G1260G9869是G11004G6155G2499G1209G1817G2010G2045G11004自G5061的计算机和仪器G17176G9316，G1000组G5326G7053G1427G9801G8975、G6817G1328G12628G2345，曾是国G19481流G15904的自动测试系统。当今，在VXI为G1039的G1319系G13479G7512中，G7389G7114也G18331G11004GPIBG1328为G17753G2173，G17837G7691G2499G1209G1817G2010G2045G11004G7424G2345G1313仪器G17176G9316，G6122G12228G15929VXI仪器模块的不G17287。VXIG1319系G13479G7512G13520G2524了。PIB和VEM总线的G1260G9869，它G19610成的系统G11840件G19610成G5242高、数G6466传G17767G10587G5567、G1427G6670G5627G3921，是当今G1505G2475G1006G11040关G8892的G1319系G13479G7512。PXIG1319系G13479G7512是G1209PCI总线为基G11796的G1319系G13479G7512，由于G1866总线G2546G2532G10587高、G11840件的G1227G7696G17751G1314G15999G1006G1881人G3775G16760为是G12538G2524国G5785的G980G12193G1319系G13479G7512。虚拟仪器G5224G11004G12255G5219的G5332发G10627G3671G1039要G7389G1016G12193G980G12193是基于传统的G7003G7424G16833G16340的软件G5332发G10627G3671，常G11004的G7389LABWINDOWS/CVI、VISUALBASIDCVCG12573G726G980G12193是基于G3282G5430化G16833G16340的软件G5332发G10627G3671，常G11004的G7389LABVIEW和HPVEE。G1866中G3282G5430化软件G5332发系统是G11004G5049G12255人G2604所G10099G5725的术G16833和G3282G5430化G12538G2507代G7379常G16280的G7003G7424G16833G16340G13546G12255，G11040G19766G2463G3921，G6817G1328G12628G1427，G2499大大G13565G11713系统G5332发G2620G7411，G9157G2475G999G1006人G2604的G19750G11556。G991G19766G13479G2524G6363G6393调G5242设备测试系统它是通信设备G13520G2524测试系统的G2010系统，重G9869介绍LABVIEWG3282G5430化软件G5332发G10627G3671在虚拟仪器和自动测试系统中的G5224G11004技术。第一节虚拟仪器简介随着微电子技术、计算机技术、软件技术、网络技术和现代测量技术的迅速发展，G980G12193新型的先进仪器虚拟仪器成为当前系统研究的热G9869。A233A234A235A236A237A238A239A240A241虚拟仪器通过软件G5332发平台G4570计算机G11840件G17176G9316与仪器G11840件G7389机地融为G980G1319，把计算机强大的数G6466处理能力和仪器G11840件的测量、控制能力G13479G2524在G980起，通过软件实现对数G6466的显示、存储及G2010析处理。在对大G16280模、G19610成化、智能化及数字电子仪器需求愈加迫切的G5430势G991，计算机技术、仪器技术和通信技术相G13479G2524，产生了G1867G7389里G12255碑意义的新G980代仪器虚拟仪器。虚拟仪器的出现G5332辟了仪器技术的新纪元，它是多门技术与计算机技术G13479G2524的产物，G1866基G7424思想逐步代G7379仪器完成某些功能，如数G6466的G18331G19610、G2010析、显示和存储G12573，最终达到取代传统电子仪器的目的。虚拟仪器是计算机G11840件G17176G9316、仪器G11840件、数G6466G2010析处理、软件、通信软件极G3282G5430G11004G6155G11040G19766的又效G13479G2524，G1867G7389传统仪器所G1867备的信G2507G18331G19610、信G2507处理G2010析、信G2507G17767出G12573功能。G1866基G7424G7512成包括计算机、虚拟仪器软件、G11840件G6521G2487和测试仪器G12573。虚拟仪器G7389G1209G991G1260G9869G7261G2045G11004了计算机丰富的软件G17176G9316。实现了部G2010仪器G11840件的软件化，节省了物G17148G17176G9316，增加了系统的G9801G8975G5627。通过软件技术和相G5224数值算法，实G7114直G6521地对测试数G6466进G15904各G12193G2010析与处理。G3282G5430G11004G6155G11040G19766（GUI）技术的G5224G11004，真正的做到G11040G19766G2463G3921、人机交互。2基于计算机网络技术和G6521G2487技术。虚拟仪器G1867G7389G7053G1427、G9801G8975的互联能力（CONNECTIVITY）,广泛支持诸如CAN、FIELDBUS、PROFIBUSG12573各G12193G5049G1006总线标准。因G8504，G2045G11004虚拟仪器技术G2499G7053G1427地G7512G5326自动测试系统，实现测量、控制过G12255的网络化。3基于计算机的G5332放G5347标准G1319系G13479G7512。虚拟仪器的G11840、软件G1867G7389G5332放G5627、模块化、G2499重复使G11004及互换G5627G12573G10317G9869，G11004G6155G2499根G6466自G5061G990的需要，选G11004不同厂家的标准G6521G2487产品，使仪器的G5332发更为高效，G13565G11713仪器组G5326、G5332发G7114间。4G1867G7389很强的G9801G8975G5627。虚拟仪器的功能由G11004G6155自G5061定义，G17837意味着G2499自由的组G2524计算机平台、G11840件、软件G1209及各G12193实现G5224G11004系统所需要的附件。G17837G12193G9801G8975G5627在由供G5224商定义、功能固定、独立的传统仪器是达不到的。从传统仪器的转变，为G11004G6155带来了更多的实G19481G2045益。G990述虚拟仪器的G10317G9869不仅推进了仪器为基G11796的G11040G19766系统改造，同G7114也影响了G1209虚拟仪器为G1039的G3282G5430G7512造G7053法的进化。过去独立G2010散、互不相干的许多领域，虚拟仪器通过软件G5332发平台G4570计算机G11840件G17176G9316与仪器G11840件G7389机地融为G980G1319，把计算机强大的数G6466处理能力和仪器G11840件的测量、控制能力G13479G2524在G980起，通过软件实现对数G6466的显示、存储及G2010析处理。虚拟仪器的出现是仪器发展史G990的G980场革命，代G15932着仪器发展的最新G7053G2533和G9538流，是信息技术的G980个重要领域，G5529G4570对科G4410技术的发展和G5049G1006生产产生不G2499G1284量的影响。G3G3第二节虚拟仪器的概念传统仪器G980G14336是G980台独立的G16025G13634，从G3818G16278G990G11487，它是G980G14336由G6817G1328G19766G7507、信G2507G17767入G12483G2487、G7828测G13479G7536G17767出G17837G1972个部G2010组成。G6817G1328G19766G7507G990G980G14336G7389G980些G5332关、G6365G19074、G7071G19074G12573。G7828测G13479G7536的G17767出G7053G5347G7389数字显示、G6363G19036G5347G15932G3848显示、G3282G5430显示及G6183G2372G17767出G12573。从功能G7053G19766G2010析，传统仪器G2499G2010为信G2507的G18331G19610与控制、信G2507的G2010析与处理、G13479G7536的G15932达与G17767出G17837G1972个部G2010。传统仪器的功能都是通过G11840件电G17347G6122固化软件实现的，而G1000由仪器生产厂家G13485定，G1866功能和G16280模G980G14336都是固定的，G11004G6155G7092法随意改变G1866G13479G7512和功能。传统仪器大都是G980个G4565G19393的系统，与G1866它设备的G17842G6521G2475到G19492制。G2490G3818，传统仪器G1227G7696G7126G17161，技术更新G5942，G5332发G17165G11004高。随着计算机技术、微电子技术和大G16280模G19610成电G17347技术的发展，出现了数字化仪器和智能仪器。G4625G12661如G8504，传统仪器G17836是G8821G7389G6682G14085独立使G11004和G2475同G6817G1328的模G5347，在G17751为复G7446的G5224G11004场G2524G6122测试G2454加G17751多的G5785G1929G991，使G11004起来G4613不G3838G7053G1427。G17837G989G7053G19766的G2419因，使传统仪器很G19602G1119G1006信息G7114代对仪器的需求。G18039G1052如G1321G16311G1927G17837个G19394G20076G2614G731G2499G1209设想，在G5529要的数G6466G18331G19610G11840件和通G11004计算机支持G991，通过软件来实现仪器的部G2010G6122G1852部功能，G17837G4613是设计虚拟仪器的G7692G5527思