[优秀毕业设计精品]基于单片机的电量检测系统设计

A1A0A2A3A3A4A5A7A6A81基于单片机的电量检测系统设计摘要随着电力系统电量的日益扩大和电压运行等级的不断提高，传统的电量检测系统暴露出越来越多的缺点，难以满足现代电网向自动化、数字化发展的需要。本文首先概述了WB系列交流电量传感器的工作原理和各项工作技术指标，并做了硬件系统的设计，包括控制电路、模块转换部分、键盘输入部分、LED显示部分方面的设计。然后介绍了ADC0809和74HC595中电子接口的各项特性，同时G4557G2345G1815的G13479G7512原理和G2163G14033G2022分G17839行了分G7524和G11752G12362，G17885G6333了G2524G17878的各G12193数G6466转换G17731件G6365。G17902G17819分G7524和G11752G12362，提出了G17731件系统方面的设计方G7708，G7380G1863键的G19394G20076G7171AG18D转换G12255G5219的设计、G1039G12255G5219和子G12255G5219的流G12255方G7708关键词A/D转换器；LED显示器；ADC0809；74HC595单片机A11A9A10A12A13A14A15A16A17A18A19A20A6A82POWERDETECTIOSYSTEMBESEDONSINGLECHIPDESIGNABSTRACTWITHTHEGROWINGPOWERSYSTEMCAPACITYANDTHEINCREASINGLEVELVOLTAGEOPERATION,THETRADITIONALAMOUNTOFPOWERDETECTIONSYSTEMWEAKNESSESEXPOSEDMOREANDMOREDIFFICULTTOMEETTHEMODERNPOWERGRIDTOTHEAUTOMATION,DIGITALDEVELOPMENTTHISPAPEROUTLINESTHEWBSERIESACPOWERSENSORWORKINGPRINCIPLEANDTHEWORKOFTECHNICALINDICATORS,ANDMADETHEHARDWARESYSTEMDESIGN,INCLUDINGCONTROLCIRCUITS,MODULESCONVERSIONCOMPONENT,KEYBOARDPART,LEDSHOWEDTHATSOMEASPECTSOFTHEDESIGNTHENINTRODUCEDTHEADC0809ANDTHE74HC595INTHEELECTRONICINTERFACEPROPERTIES,WHILETHESTRUCTURALPRINCIPLESANDFUNCTIONSOFCELLDIVISIONWASANALYZEDANDSTUDIED,THESUITABLERANGEOFDATACONVERSIONSOFTWAREBYTHROUGHANALYSISANDRESEARCH,THEDESIGNOFSOFTWARESYSTEMS,THEMOSTCRITICALISSUEISA/DCONVERSIONPROCESSOFDESIGN,THEMAINPROGRAMANDSUBROUTINEPROGRAMFLOWKEYWORDSA/DCONVERSIONCHIP；74HC595SCM；ADC0809；LEDDISPLAYCHIPA21A22A23A24A24A25A26A27A28A293目录ABSTRACT21绪论12WB系列交流电量传感器2A30A31A32A33A342A30A31A30A35A36A37A38A39A40A41A42A43A44A45A46A47A482A30A31A49A41A42A43A50A51A52A53A54A55A5633硬件系统的设计4A49A31A32A57A58A59A604A49A31A30A61A62A39A63A44A64A654A49A31A30A31A32A66A67A68A69A70A714A49A31A30A31A30A72A73A74A75A76A77A69A78A7910A49A31A30A31A49A80A81A82A74A75A83A84A85A86A66A67A68A87A88A69A89A90A91A9211A49A31A30A31A93A80A82A94A95A96A95A97A98A991233A100A101A102A103A104A10514A49A31A49A31A32A106A107A108A109A11014A49A31A49A31A30A111A112A108A109A11015A49A31A49A31A49A113A114A82A115A116A76A7715A49A31A93A113A114A82A44A117A118A119A120A121A12216A49A31A93A31A32A113A114A82A123A124A115A116A125A10816A49A31A93A31A30A126A93A127A94A128A97A128A98A9917A49A31A93A31A49A109A110A86A115A116A129A130184软件系统设计19A93A31A32A94A131A132A133A13419A93A31A30A135A136A137A38A136A6019A93A31A49A138A100A136A137A38A136A6020A139A140A141A142A143A144A145A146A147A148A149A150A151A1524A93A31A93A153A154A43A95A155A156A157A158A136A137A64A6520A93A31A128A80A81A82A159A160A136A137A64A6522致谢25参考文献26附录1设计原理图27附录2源程序28A161A162A163A164A164A165A166A167A151A15211绪论自G12544G980G1022G5506G3800理器G19394G1002以来，以G5506G3800理器G1038G7692G5527G7512G6116的计G12651G7438以各G12193各G7691的G5430G5347，G7092G4392不入的G9195入G2052G1166G1216的G10995G1147、G10995G8975、G12197G11752等各G1022G20058G3507，G1038G1166G12879G5114来了G9195G17891G2052各G1022G20058G3507的G256G7246G14033G257。G5506G3800理器G7171G6984G1022G7246G14033G1214器G1214G15932的G7692G5527，检测电路时G5506G3800理器的G3818G3272设G3803，G5506G7438G17902G17819接口发出各G12193控制G1461G5699G13485检测电路，以G16280G4462G2163G14033、G2563动测量、G6925G2476工作方G5347等。G5506G7438G17902G17819G7609G16822G6122检测电路向G5506G7438提出的中断G16843G8726，G1363G5506G7438G2462时了G16311检测电路的工作G10378G5589。G5415检测电路G4448G6116G980G8437测量后，G5506G7438G16847G2474测量数G6466，G17839行了G16311检测电路的工作G10378G5589。G5415检测电路G4448G6116G980G8437测量后，G5506G7438G16847G2474测量数G6466，G17839行G5529要的G2164工、计G12651、G2476换等G3800理，G7380后以各G12193方G5347输出，G3926G17877显示器、G6183G2372G7438G6183G2372，G6122G17877G13485系统的G1039控制器等等。G17829G1120G2325G5192来，以计G12651G7438G12197G4410，G1461G5699G4410，G10995G2641G12197G4410G1038代G15932的各G19388G7044G1864G4410G12197的G17817G10479发展，G7509大G19492G5242的G2062G9620了G1852G10711G13475G8994的发展，G3324现代化的工G1006G10995G1147中，电流、电压、G9213G5242、压力、流量、流G17907和G5332G1863量G18129G7171G5132用的G1039要被控参数。例G3926G3324冶金工G1006、化工G10995G1147、电力工G12255、造纸行G1006、G7438械制造和食品G2164工等诸多G20058G3507中，电G14033G7171G1166G1216日G5132G10995G8975和工G1006G10995G1147中的重要G14033源之G980，G3324现代社会中起着越来越重要的作用，而电压、电流G7171其中G7380G1863键的两G1022因素，G7171否准确的测量电压、电流G4557我G1216的G10995G8975和G10995G1147有着至G1863重要的影响，特别G7171电工和电力系统等G20058G3507G13475G5132要G4557交流电量G17839行采G7691测试以了G16311工作电压G6122G6984G1022电网的工作情况。A139A140A141A142A143A144A145A146A147A148A149A150A151A15222WB系列交流电量传感器21概述WB系列交流电量传感器采用电磁隔离技术和专用厚膜集G6116电路。G4557电网G6122电路中的交流电流G6122交流电压G17839行实时测量，将其G2476换G6116跟踪电压暑促（VG）、直流电压输出（VZ）、直流电压输出（IZ）、频率输出（FK）。传感器的输出可以与各型AD转换器配接G7512G6116数G6466采集系统，也可以与传统模G5347、数字G5347指示G1214G15932配接，显示被测量之值。体积小、重量轻、精G5242高、耗G14033低，输入电路、输出电路G4448G1852隔离，输出G1461号可以共地，输出G5430G5347多G7691，满足各G12193G1363用要G8726，G33240120标称输入范G3272内，输出G1461号入输出G1461号之间保持正比例G1863系，G17902聘宽G5114，可以测量5KHZ以内的正弦交流电流G6122交流电压。G13479G7512G5430G5347多G7691，提供直插G5347、DIN卡装G5347安装方G5347，方便各G12193场G2524G1363用等特点。22WB交流电量传感器的工作原理本系列传感器采用模块化电路G13479G7512，G3926图21G1039要由电流测头1（G6122电压侧头2）、采G7691电路3、G4462标放大器4、装用厚膜集G6116转化器5、6、7组G6116。A168A169A170A171A172A173A174A175被测电流G1461号IXG6122被测电压G1461号UXG13475电流测头1G6122电压测头2隔离G2476换，G3324G1120G8437回路G5430G6116高精G5242毫安级跟踪电流，G13475采G7691电路3转换G1038跟踪电压G1461号，G3324G13475G4462标放大器4G17839行放大、G4462标，G5430G6116跟踪电压输出VG；跟踪电压G1461号G13475AC/DC转换器5后，G5430G6116直流电压输出VZ。VZ输出G13475V/I转换器6后G5430G6116直流输出IZ,VZ输出G13475V/FG2476换器7后G5430G6116频率输出FK。只有输出跟踪电压VG的G1147品才G1363用正负电源E,E,其他G1147品才G1363用A176A177A178A179A179A180A181A182A183A1843G2345G980正电源。图21中电流测头1和电压测头2G7171本系列G1147品的G1863键部件，属于精密互感器系列，承担隔离和线性G2476换的双重作用，G6925G2476电流测头G16280格G6122G6925G2476电压测头的输入电阻可以G6925G2476传感器的测量范G3272。G4462标放大器4G7171G980G1022宽G5114交流放大器，它G1147G10995的电压输出VG，G3324波G5430和相位上快G17907跟踪输入G1461号的G2476化，VG输出型传感器G17878用于交流采G7691系统。转换器5G7171配套G11752发的专用厚膜集G6116器件，它G6238交流电压G1461号G2476换G1038直流电压G6122直流电流输出。转换原理分G1038G5191G3355值转换和G11507有G6940值转换，G5191G3355值转换器G6116本低，G17878用于标准正弦交流G1461号转换；G11507有G6940值转换器G17878用于G2559有多G8437G16868波的交流G1461号（G3926G989G16294波、G11709G5430波、G7811G5430波、可控G11801G16855G2163波等），G2345G6116本G17751高。转换器5（G6122转换器6）的“G3534准波”接地时，他输出05V（G6122020MA）；G1038它G1216配G2164以G1022高G12295G4462的G1571G13634电路，G4613G5430G61161V5V（G61224MA20MA）；G1038它G1216配G2164G980G1022高G12295G4462的G1571G13634电路，G4613G5430G6116了1V5V（4MA20MA）输出。23传感器型号及技术指标采用WBV413AS3交流电压传感器和WB1414AS1交流电流传感器G4557电流和电压G17839行数G6466采集。WBV141AS3技术指标输入G16280格10V1000VAC输出G16280格4MA20MA响G5224时间250MS负G17745G14033力6VG19757G5589G2163耗50MW供电电源12G612224其他指标（1）线性范G32720120标称输入（2）输入频响255K（3）G10627G3671G7477件0G26350G263WB1414AS1技术指标输入G16280格5A50A输出G16280格4MA20MA精G5242等级05级响G5224时间300MSA185A186A187A188A189A190A191A192A193A194A195A196A197A1984负G17745G14033力6VG19757G5589G2163耗800MW供电电源12G612224其他指标（1）线性范G32720120标称输入（2）输入频响25HZ5KHZ，特别G17878G2524工频至中频（3）G10627G3671G7477件0G26350G263。3硬件系统的设计31硬件框图ADC0809A199A200AT89C51A201A202A203A204A205WBV414AS3WBI414AS1A206A207A208A209A210A211A212A206本设计G7171AT89C51G2345G10267G7438控制的电量检测系统。其工作原理G7171先由电量传感器采集数G6466，G2563动AG715D转换，后将数G6466G16847入G2345G10267G7438中G17839行运G12651并显示，G2375由数G6466采集，数G6466分G7524和数G6466G3800理G989部分G4448G6116。本设计中，控制系统的控制器有G2345G10267G7438AT89C51G1038G7692G5527，系统采用WB1414AS1（交流电流传感器）和WBV1414AS3交流电压传感器G4557电流和电压G17839行数G6466采集，并输出标准电流4MA20MA，WB1414AS1、WBV1414AS3G1867有G7044型电磁隔离，高精G5242G2476G17877等G1260点。AT89C51G2345G10267G7438控制AD0809G17839行模数转换，数G6466G13475G17819G2345G10267G7438的运G12651，输出G13479G7536，并G6238G13479G7536G33244位8G8585数G11733G12661上显示。32控制电路的设计321单片机的选择20G1002G1343880G5192代以来，G2345G10267G7438的发展G19762G5132G17817G17907，G4613G17902用G2345G10267G7438而G16340，G1002G11040上G980G1135G14891G2529A213A214A215A216A216A217A218A219A197A1985的计G12651G7438G2390G4490G5062G13475G6249放G5078场的G1147品G4613有50多G1022系列，数G11346G1022品G12193。G11458G2081G1002G11040上G17751G1038G14891G2529的8位G2345G10267G7438的G10995G1147G2390G4490和G1039要G7438型G3926G991G13666G3281INTELG1856G2508MCS51系列和其G3698G5390型系列G13666G3281MOTOROLAG1856G25086801系列和6805系列G13666G3281AMTELG1856G250889C51等G2345G10267G7438G13666G3281ZILOGG1856G2508Z8系列和3870系列G13666G3281FAIRCHILDG1856G2508F8系列G2462SUPER8G13666G3281ROCKWELLG1856G25086500G7151系列G13666G3281TI（G5515G1823G14844G7043G1214器G1214G15932）G1856G2508TMS7000系列NS（G13666G3281G3281G4490G2334G4560体）G1856G2508NS8070系列等等。G4625G12661G2345G10267G7438的品G12193G5468多，G1306G7171G3324我G3281G1363用G7380多G17836G7171INTELG1856G2508的MCS51系列G2345G10267G7438和G13666G3281AMTELG1856G2508的89C51G2345G10267G7438。MCS51系列G2345G10267G7438包括G989G1022G3534本型8031、8051、8751。8031内部包括G980G10228G1038CPU、128G1022字G14422RAM，21G1022特G8542G2163G14033的G4504G4396器（SFR）、4G10228位并行IG715O口、1G1022G1852双工G12371行口、2G102216位G4462时器G715计数器，G1306G10267内G7092G12255G5219G4396G1660器，需G3818扩EPROMG14467G10267。比G17751G21647G9914，不G1116采用。8051G7171G33248031的G3534G11796上，G10267内集G6116有4KROM，作G1038G12255G5219G4396G1660器，G7171G980G1022G12255G5219不G17241G178194K字G14422的小系统。ROM内的G12255G5219G7171G1856G2508制作G14467G10267时，代G1038用G6155G9915纸的，出场的8051G18129G7171G2559有特G8542用G17896的G2345G10267G7438。G6164以8051G17878用用G5224用G3324G12255G5219G5062G4462G1000G6221量大的G2345G10267G7438G1147品中，G6164以也不采用。8751G7171G33248031G3534G11796上，G3698G2164了4K字G14422的EPROM，它G7512G6116了G980G1022G12255G5219小于4KB的小系统。用G6155可以将G12255G5219G3278化G3324EG51G53G50G48G15可以G2465G3809G1474G3809G12255G5219。G1306其G1227格相G45578031G17751G17161。8031G3818扩G980G102674G46BEG51G53G50G48G4613相G5415于8751，它的G7380大G1260点G7171G1227格低。随着大G16280模集G6116电路技术的不断发展，G14033装入G10267内的G3818G3272接口。G15441然G15441G18129G3324不断的G6925G2476制造工G14414，G1306内G7692G2376G980G7691，也G4613G7171G16840G17837G12879G2345G10267G7438指G1208系统G4448G1852G1872G4493，G13489大多数G12661G14062也G1872G4493；G3324G1363用上G3534本可以直接互换。G6164以不采用89C51G2345G10267G7438G7171G980G12193G51144G46字G14422G19390G9877可G13546G12255可G6842G19512只G16847G4396G1660器（G41G51EG53G50G48G252G41G68G79G86G75G51G85G82G74G85G68G80G80G68G69G79G72G68G81G71EG85G68G86G68G69G79G72G53G72G68G71G50G81G79G92G48G72G80G82G85G92）的低电压，高性G14033CG48G50S8位G5506G3800理器，俗称G2345G10267G7438。89C51G7171G980G12193G51142G46字G14422G19390G9877可G13546G12255可G6842G19512只G16847G4396G1660器的G2345G10267G7438。G2345G10267G7438的可G6842G19512只G16847G4396G1660器可以G2465G3809G6842G19512100G8437。该器件采用ATG48EL高密G5242G19762易失G4396G1660器制造技术A185A186A187A188A189A190A191A192A193A194A195A196A197A1986制造，与工G1006标准的G48CS51指G1208集和输出G12661G14062相G1872G4493。由于将多G2163G140338位CG51U和G19390G9877G4396G1660器组G2524G3324G2345G1022G14467G10267中，ATG48EL的89C51G7171G980G12193高G6940G5506控制器，89C2051G7171它的G980G12193精简版本。89C51G2345G10267G7438G1038G5468多嵌入G5347控制系统提供了G980G12193灵G8975性高G1000G1227廉的方G7708。G6164以采用此G2345G10267G7438G17751好。AT89C51G2345G10267G7438简介G1039要特征与G48CS51G1872G4493；4G46字G14422可G13546G12255G19390G9877G4396G1660器；寿G26411000写G18G6842循G10627；数G6466保留时间10G5192；G1852G19757G5589工作0HZ24G48HZ；G989级G12255G5219G4396G1660器锁G4462；288位内部G53AG48；32可G13546G12255IG18G50线；两G102216位G4462时器G18计数器；5G1022中断源；可G13546G12255串行G17902道；低G2163耗的闲G13634和掉电模G5347；G10267内振荡器和时钟电路；G12661G14062G16840明VCC供电电压。GND接地。G510口G510口G1038G980G10228位漏级G5332路双向IG18G50口，每G14062可吸收8TTLG19388电流。G5415G511口的G12661G14062G12544G980G8437写1时，被G4462义G1038高阻输入。G510G14033够用于G3818部G12255G5219数G6466G4396G1660器，它可以被G4462义G1038数G6466G18地址的G12544八位。G3324G41IASHG13546G12255时，G510口作G1038原G11733输入口，G5415G41IASHG17839行校验时，G510输出原G11733，此时G510G3818部G5529须被拉高。G511口G511口G7171G980G1022内部提供上拉电阻的8位双向IG18G50口，G511口缓冲器G14033接收输出4TTLG19388电流。G511口G12661G14062写入1后，被内部上拉G1038高，可用作输入，G511口被G3818部G991拉G1038低电G5191时，将输出电流，G17837G7171由于内部上拉的缘故。G3324G41LASHG13546G12255和校验时，G511口作G1038G12544八位地址接收。G512口G512口G1038G980G1022内部上拉电阻的8位双向IG18G50口，G512口缓冲器可接收，输出4G1022A213A214A215A216A216A217A218A219A197A1987TTLG19388电流，G5415G512口被写G2561G257时，其G12661G14062被内部上拉电阻拉高，G1000作G1038输入。并因此作G1038输入时，G512口的G12661G14062被G3818部拉低，将输出电流。G17837G7171由于内部上拉的缘故。G512口G5415用于G3818部G12255G5219G4396G1660器G612216位地址G3818部数G6466G4396G1660器G17839行G4396G2474时，G512口输出地址的高八位。G3324G13485出地址G2561G257时，它利用内部上拉G1260势，G5415G4557G3818部八位地址数G6466G4396G1660器G17839行G16847写时，G512口输出其特G8542G2163G14033G4504G4396器的内G4493。G512口G3324G41LASHG13546G12255和校验时接收高八位地址G1461号和控制G1461号。G513口G513口G12661G14062G71718G1022G5114内部上拉电阻的双向IG18G50口，可接收输出4G1022TTLG19388电流。G5415G513口写入G2561G257后，它G1216被内部上拉G1038高电G5191，并用作输入。作G1038输入，由于G3818部G991拉G1038低电G5191，G513口将输出电流（ILL）G17837G7171由于上拉的缘故。G19512了作G1038G980般的IG715G50口线G3818，更重要的用G17896G7171它的G12544G1120G2163G14033，G3926G991G15932G6164示A220A207A208A209A221A207A222A223A224A225A226A227G513口G17836接受G980G1135用于G41LASHG19390G17907G4396G1660器G13546G12255和G12255G5219校检的控制G1461号。G53STG3809位输入。G5415振荡器工作时，G53ST引G14062出现两G1022G7438器周期以上高电G5191将G2345G10267G7438G3809位。ALEG715PROGG5415访G19394G3818部G12255G5219G4396G1660器G6122G16840句G4396G1660器时，ALE地址锁G4396允许输出脉冲用于锁G4396地址的低8位字G14422。G2375G1363不访G19394G3818部G4396G1660器，ALE仍G980时钟振荡频率的1G7156输出G3278G4462的正弦脉冲G1461号，因此它可以G4557G3818输出时钟G6122用于G4462时G11458的。G1306要注意的G7171每G5415访G19394G3818部数G6466G4396G1660器时将跳G17819G980G1022ALE脉冲。端口引G14062G12544G1120G2163G14033P30RXDA228A229A230A231A232A233A234P31TXDA228A229A230A231A235A233A234P320INTA236A237A2380P331INTA236A237A2381P34T0A239A240A241A242A2430P35T1A239A240A241A242A2431P36WRA228A236A244A242A245A246A247A243A248A249A250A234P37RDA228A236A244A242A245A246A247A243A251A249A243A234A252A253A254A255A11A0A1A2A3A4A5A6A7A88G4557G41LASHG4396G1660器G13546G12255期间，该引G14062G17836用于输入G2476G6116脉冲PROG。G3926有G5529要，可G17902G17819G4557特G8542G2163G14033G4504G4396器SG41G53区中的8EHG2345G1815的D0位G13634位，可禁止ALE操作。该位G13634后，只有G980G7477G48G50VX和G48G50VC指G1208ALE才会被G9620G8975，此G3818，该引G14062后被G5506弱拉高，G2345G10267G7438执行G3818部G12255G5219时，G5224设G13634ALEG7092G6940。PSENG12255G5219G4396G1660允许PSEN输出时G3818部G12255G5219G4396G1660器的G16847G2474G17902G1461号，G5415AT89C51由G3818部G12255G5219G4396G1660器G2474指G1208G6122数G6466时，每G1022G7438器周期两G8437PSEN有G6940，G2375输出两G1022脉冲，G3324此期间，G5415访G19394G3818部数G6466G1660G4396器时，G17837两G8437有G6940的PSENG1461号不出现。EAG715VG51G51G3818部访G19394允许，欲G1363CG51U仅访G19394G3818部G12255G5219G4396G1660器地址G10380000HG41G41G41G41HG15EA端G5529须保持低电G5191接地。需要注意的G7171G3926G7536G2164密位LB1被G13546G12255，G3809位时内部会锁G4396EA端G10378G5589。G41LASHG4396G1660器G13546G12255时，该引G14062G2164上12V的G13546G12255允许电源VPP，G5415然G17837G5529须G7171该器件G7171G1363用12VG13546G12255电压VPP。XTAL1振荡器G2465相放电器G2462内部时钟发G10995器的输入端。XTAL2振荡器3放大器的输出端。时钟振荡器AT89C51中有G980G1022用于购车G1022内部振荡器的高G3698益G2465相放大器，引G14062XTAL1和XTAL2G41分别G7171该放大器的输入端和输出端。G17837G1022放大器与作G1038G2465馈G1815件的G10267G3818石英晶体G6122陶瓷G16868振器G980起G7512G6116自G9620振荡器，振荡电路G3926图32G6164示。G3818G11040G17878G5224晶体G6122陶瓷振荡器G2462电G4493C1、C2接G3324放大器的G2465馈回路中G7512G6116并联振荡电路。G4557G3818接电G4493C1、C2G15441然没有G2325分严格的要G8726，G1306电G4493G4493量的大小会轻G5506影响振荡频率的高低，振荡器工作的G12295G4462性，起振的难易G12255G5219G2462G9213G5242G12295G4462性，G3926G7536G1363用石英晶体，则推荐电G4493G1363用30PG4110PG41，而G3926G1363用陶瓷振荡器建议G1363用40PG4110PG41。用G6155也可以采用G3818部时钟，采用时钟的电路G3926图33。G3324G17837G12193情况G991，G3818部时钟脉冲接G2052XTAL1端，G2375内部时钟发G10995器的输入端，XTAL2则悬空。A9A10A12A13A13A14A15A16A17A189A25A65A60A59A87A19A20A21A22A23A25A65A60A65A78A19A20A21A22A23由于G3818部时钟G1461号G7171G17902G17819G980G10222分钟触发器作G1038内部时钟G1461号的，G6164以G4557G3818部时钟G1461号的占空比没有特G8542要G8726，G1306G7380小高电G5191持续时间和G7380大的低电G5191持续时间G5224符G2524G1147品技术G7477件的要G8726。AT89C51G2345G10267G7438中，有G1135属于低电G5191G13546G12255方G5347，而有G1135则G7171高电压G13546G12255方G5347。用G6155可以从G14467G10267上的型号和G16847G2474G14467G10267内的签G2529字G14422获得该G1461G5699。G3926G1593232G6164示A66A65A60A59VPPA9012VVPPA905VA91A24A26A27A28A29AT89C51XXXXYYWWAT89C51XXXXA955YYWWA96A30A31A32A100030HA101A901EHA100031HA101A905EHA100032HA101A90FFHA100030HA101A901EHA100031HA101A9051HA100032HA101A9005HAT89C51的G12255G5219G4396G1660器列阵采用字G14422写入方G5347G13546G12255的，每G8437写入G980G1022字G14422要G4557G6984G1022G14467G10267内的G51EG53G50G48G12255G5219G4396G1660器写入G980G1022G19762空字G14422，G5529须G1363用G6842G19512的方G5347将G6984G1022G4396G1660器的内G4493写清楚。G13546G12255方法G13546G12255G2081，先设G13634好地址，数G6466G2462控制G1461号，G13546G12255G2345G1815的地址G2164G3324G51I口和G512口G15A33A34A35A36A37A38A39A40A41A42A43A44A17A1810G5110G512311位地址范G3272G10380000H0G41G41G41H，数G6466从G510口输入，PSENG1038低电G5191，G53ST保持高电G5191，EAG18VPP引G14062G7171G13546G12255电源的输入端，G6365要G8726G2164上标称电压，ALEG18G51G53G50G引G14062输入G13546G12255脉冲负脉冲。G13546G12255时，可采用4G48HZ20G48HZ的时钟振荡器G15AT89C51G13546G12255方法G3926G9911G3324底线上G2164上要G13546G12255G2345G1815的地址G1461号。2G3324数G6466线上G2164上要写入的数G6466字G14422。3G9620G8975相G5224的控制G1461号。4G3324高电压G13546G12255方G5347时，将EAG715VPPG2164上12VG13546G12255电压。5每G4557G41LASHG4396G1660阵列写入G980G1022字G14422，G2164上G980G1022ALEG715G51G53G50GG13546G12255脉冲。G6925G2476G13546G12255电源的地址和写入G980G1022字G14422，重G380915步骤，直G2052G1852部文件G13546G12255G13479束。每G1022字G14422写入周期G7171自身G4462时的，G17902G5132约G103815G80G86。AT89C51的G7509G19492参数工作G9213G524255G263TG82125G263；G1660藏G9213G524260G263TG82150G263；任G980引G14062G4557地电压10G263TG8270G263；G7380高工作电压66V；直流输出电压150MA。322模数转换部分的设计随着G2334G4560体技术数字化和集G6116化的日益G16855高，G3324推动G5506控制器、数字G1461号G3800理器、G5506G7438械电子系统的发展中，也推动了嵌入G6122隐G5430模数AG715D转换技术的发展，AG715D转换技术G3324G2476得越来越G3809杂的同时，也正朝着高精G5242、高G17907G5242的发展方向G17820G17839。由于数字G1461号G3800理技术G3324图G5430、G16282频、G7092线G17902G16771的G5203G8879G5224用，G4557高G17907高精G5242的CMOS工G14414的模数转换器的要G8726日益G17855G2011。AG715D转换器的G12193G12879G13333多，工作原理各G5334，G1306G17892G8437比G17751型AG715D转换器G7171G5224用G17751多的G12879型之G980，其原因G7171该G12879型的AG715D转换器转换G17907G5242快、精G5242高。因此本G8437设计G17885用G980G8466G17892G8437比G17751型AG715D转换器ADC0809被采G7691的电压、电流G1461号分两路G17839入ADC0809G17839行模数转换，写G1461号WR和P27控制ADC0809的地址锁G4396和转换器，G2375G5415START上跳G8851时，G6164有内部G4504G4396器清G19658；G991G16855G8851时，G5332G3999G17839行AG715D转换，G3324转换期间，STARTG5224保持低电G5191。EOCG17902G17819G19762G19388G17842接G2052AT89C51的INTOG14062，可G17902G17819G7609G16822方G5347来检测转换G7171否G4448G6116。G5415EOCG1038高电G5191时，G15932明转换G13479束，否G13785G15932明正G3324G17839行AG715D转换，G2375ECO1时，G16847G1461号RD和P27控制的ADC0809的OEG1461号G2375控制G989G7477锁G4396器向G2345G10267G7438输出转换得G2052的数G6466。A45A46A47A48A48A49A50A51A52A5311323A/D转换器概述及单片机接口的一般特点A/D转换器G7171G980G12193用来将G17842续模G6323G1461号转换G6116G17878G2524于数字G3800理的G1120G17839制数的器件，其工作原理方G7706图G3926图34G6164示。图A54A55A102A56A104A105A57A58A61A62A63A64A67A68由图中可以G11487出，AG715D转换器的输入有两G12193，G2375模G6323输入G1461号VIN和参G13783电压VREF；其输出时G980组G1120G17839制数。可以G16760G1038，AG715D转换器G7171G980G1022将模G6323G1461号值G13546制G6116G4557G5224的G1120G17839制G11733的G13546G11733器。G5132用的AG715D转换器有双积分G5347、G17892位比G17751G5347G2462G12189性比G17751时G1972G1