-RTK GPS板卡驱动电路设计与开发

本科毕业设计RTKGPS板卡驱动电路设计与开发摘要自从GPS问世以来，就以其高精度，全天候，全球覆盖，方便灵活和优质价廉吸引了全世界许多用户。目前，国内GPS应用发展势头迅猛，短短几年间，GPS在我国的应用已经从少数科研单位和军用部门迅速扩展到各个民用领域，GPS的广泛应用改变了人们的工作方式，提高了工作效率，带来了巨大的经济效益，具有广阔的应用前景。TrimbleBD970GNSS接收模块作为在GNSS领域的Trimble公司最新技术，应用于装备原始设备制造商和系统集成，是一款紧凑型的多星座模块，专为满足各种精确到厘米级的定位精度应用需求而设计。本文阐述了能够测试TrimbleBD970GNSS接收模块的功能的驱动电路板的设计原理。此驱动电路板主要由电源模块，串口通信模块和LED提示模块组成。通过此驱动电路板，能够实现上位机与TrimbleBD970GNSS接收模块的通信，对TrimbleBD970GNSS接收模块的定位输出、差分输入、LED指示等功能进行方便测试。关键词：GPSGNSS驱动电路功能测试TheDriverCircuitDesignOfTrimbleBD970GNSSReceiverModuleYangLijian（CollegeofScience,SouthChinaAgriculturalUniversity，Guangzhou510642，China）Abstract:SincetheadventofGPS,withitshighprecision,all-weather,globalcoverage,convenientandflexibleandthehighqualityandlowpricetoattractmanyusersaroundtheworld.Atpresent,thedomesticGPSapplicationdevelopmentmomentumisswiftandviolent,injustafewyears,theapplicationsofGPSinourcountryhavefromasmallnumberofscientificresearchunitsandmilitarydepartmentsquicklyspreadtotheciviliansector,GPSiswidelyusedtochangethewaypeoplework,improveworkefficiency,broughthugeeconomicbenefits,hasbroadapplicationprospects.TrimbleBD970GNSSreceivermoduleasTrimblerefusedcompanythelatesttechnologyinthefieldofGNSS,appliedtooriginalequipmentmanufacturersandsystemintegrationequipment,isamorecompactconstellationmodules,designedtomeetallkindsofprecisepositioningtothecentimeterlevelaccuracyapplicationrequirementsanddesign.ItisexpoundedinthisarticletotestTrimbleBD970GNSSreceivermodulefunctionofthedrivebackplanedesignprincipleofthedriveplateismainlycomposedofpowersupplymodule,serialcommunicationmoduleandLEDpromptmodulethroughthedriveplate,canrealizetheuppermachinewithTrimbleBD970GNSSreceivermoduleofcommunication,theTrimbleBD970GNSSreceivermodulepositioningoutputdifferentialinputLEDindicatorfunctionssuchasconvenienttotest.Keywords:GPSGNSSDriveCircuitFunctionalTestI目录1前言........................................................................................................................................11.1全球定位系统系统简介.....................................................................................................11.2国外其他全球定位系统简介.............................................................................................21.2.1格洛纳斯全球导航卫星系统..........................................................................................21.2.2伽利略卫星定位系统......................................................................................................31.3中国北斗卫星导航定位系统.............................................................................................31.4GPS产品的应用现状........................................................................................................51.4.1GPS芯片组的应用现状.................................................................................................51.4.2GPS模块的应用现状.....................................................................................................61.4.3GPS接收机的应用现状.................................................................................................62TrimbleBD970GNSS接收模块的功能与硬件接口..........................................................82.1TrimbleBD970GNSS接收模块的定位规格...................................................................92.2TrimbleBD970GNSS接收模块各排针功能...................................................................92.3NMEA-0183标准协议简介.............................................................................................113驱动电路设计理论分析及元件选择..................................................................................113.1驱动电路排座接口...........................................................................................................123.2电源模块...........................................................................................................................133.2.1220V转换5V电路.......................................................................................................133.2.29V转换3.3V电路........................................................................................................143.3串口通信电路...................................................................................................................153.4LED驱动支持电路..........................................................................................................164驱动电路板制作与测试分析..............................................................................................184.1电路板焊接.......................................................................................................................184.2电路板调试.......................................................................................................................204.3电路板测试与分析...........................................................................................................205结论......................................................................................................................................21参考文献....................................................................................................................................22附录.