基于单片机AT89S52的汽车胎压监测系统TPMS摘要：轮胎的突然爆炸通常会引起严重的交通事故，威胁着驾驶员的安全。面对这个问题有必要来研究轮胎的安全系统。系统的软件组成与软件设计都是来监测轮胎压力。整个系统由一个主机模块和一个无线传感模块组成。这个无线传感器安装在轮胎上，实时监测压力和温度并把数据通过无线模块PT2262送到主机模块AT89S52.。主要以PT2272来接收数据并处理，一旦轮胎压力出现异常的高或低，或者泄露，还有温度过于高，都会被监测到通过转换为可见的信号来提醒司机，来避免严重的交通事故。关键词：AT89S52；2262/2272；ADC0804AT89S52microcontroller-basedautomotivetirepressuremonitoringsystemTPMSAbstract:Suddentireexplosionaccidentsoftencauseserious,threateningthesafetyofthedriver.Facedwiththisproblemitisnecessarytostudythetiresafetysystem.Systemsoftwarecomponentsandsoftwarearedesignedtomonitortirepressure.Thesystemconsistsofahostmoduleandawirelesssensormodule.Thewirelesssensorsinstalledinthetires,real-timemonitoringofpressureandtemperature,andthedatatothehostthroughthewirelessmodulePT2262modulesAT89S52..PT2272primarilytoreceivedataandprocess,oncethetirepressureabnormalhighorlow,ordisclose,aswellasthetemperatureistoohigh,willbemonitoredbyconvertingthesignaltobeseentoreminddriverstoavoidseriousaccidents.Keywords:AT89S52;2262/2272;ADC0804目录第一章引言................................................................................................31.1引言.......................................................................................31.4基本内容及章节安排..............................................................4第二章电路整体工作原理分析................................................................6第三章：芯片介绍..................................................................................73.1MCS-52介绍...............................................................................73.2LED数码管显示.........................................................................103.2.1LED数码管介绍...............................................................103.2.2LED数码管编码方式.....................................................113.2.3LED数码管显示方式和典型应用电路.........................123.3：DS18B20数字温度传感器介绍...............................................133.4PT2262/2272无线数字收发芯片.............................................21第四章部分电路介绍............................................................................264.1单片机的最小应用系统.............................................................264.1.1单片机的时钟电路..........................................................264.1.2复位电路和复位状态......................................................274.1.3总线结构...........................................................................294.2显示电路.....................................................................................304.3PT2262/2272无线发送接收电路.............................................314.4看门狗电路.................................................................................31第五章主要程序设计及流程................................................................335.1主流程图.....................................................................................335.2DS18b20测温程序流程.............................................................345.3显示主程序..............................................................
