汽车轮胎温度压力检测技术

汽车轮胎温度压力检测技术摘要轮胎温度压力检测系统TPMS是最新一代汽车安全产品,是继汽车安全气囊,ABS刹车系统后第三代安全产品。主要用于在汽车行驶时实时的对轮胎气压进行自动监测，对轮胎漏气和低气压进行报警，当车轮不能满足汽车正常工作的条件时TPMS就会发出危险信号提醒驾驶者车轮已不能正常工作，保障行车安全。目前，TPMS主要分为直接式和间接式两种类型。间接式TPMS是通过汽车ABS系统的轮速传感器来比较车轮之间的转速差别，以达到监视胎压的目的。直接式TPMS是利用安装在每一只轮胎里的压力传感器来直接测量轮胎的气压，并对各轮胎气压进行显示与监视。。恰当的轮胎充气压力是保证汽车安全、平稳行驶的关键因素。及时准确地对超过或低于轮胎压力标准范围的异常状态进行报警，是减少由轮胎爆胎引发的交通事故的有效途径。随着高新技术的发展和现代汽车不断趋向高性能化,汽车用的轮胎也从长期的性能时代,开始进入功能化的新时期。当然，现代汽车的安全配置也在不断得到完善，如安全带、安全气囊、防撞杆等被广泛运用，不过这些都是属于交通事故发生后，才能对人、车起到保护作用的被动安全装置。然而本文研制的轮胎爆胎预警系统，则不同于上述的装置，它在轮胎一出现危险征兆时就能够及时发现并同时报警，最大限度地将事故消灭在萌芽状态，从而极大地提升了车辆高速行驶的安全性，这一优势在高速公路上表现更为明显。本文通过对现有的TPMS进行改进，并对TPMS的未来发展做了分析和预测。关键词：行车安全，TPMS，无源，无线AbstractTPMSTirePressureMonitoringSystemTemperatureisthelatestgenerationofautomotivesafetyproducts,isthesecondairbag,ABSbrakingsystemonthethirdgenerationofsecurityproducts.Mainlyusedinthecardrivingforreal.timeautomaticmonitoringoftirepressure,lowpressureonaflattireandanalarm,whenthewheelscannotsatisfytheconditionsworkingvehicleTPMSwillsenddangersignalstoremindthedriverdoesnotworkthewheelshavebeenToensuredrivingsafety.Atpresent,TPMSconsistsoftwodirect.andindirecttypes.IndirectTPMSsystemthroughthevehicleABSwheelspeedsensorstocomparewheelspeeddifferencebetween,inordertoachievethepurposeofmonitoringtirepressure.DirectTPMSistouseonlythetiresinstalledoneachofthepressuresensortodirectlymeasurethetirepressure,andtodisplaythetirepressureandmonitoring.Inthispaper,toimprovetheexistingTPMS,andthefuturedevelopmentofTPMStodotheanalysisandprediction.Withthehigh-techdevelopmentandthecontinuedtrendofmodernhighperformancecars,automobiletiresusedintheperformanceofthelongtime,begantoenterthefunctionoftheperiod.Ofcourse,securityconfigurationofmoderncarsarealsoconstantlybeenimproved,suchasseatbelts,airbags,anti-collisionequipment,etc.arewidelyused,butthesebelongtotheaccidenthappened,canthepeople,vehiclesplayaprotectiveroleofpassivesafetydevice.However,thisearlywarningsystemdevelopedbythetirepuncture,thedeviceisdifferentfromtheabove,itisadangeroussigninthetirewhentheabilitytodetectandalarmsimultaneously,tomaximizetheaccidentnippedinthebud,therebygreatlyenhancingthespeedofvehiclesdrivingsafety,thisadvantageismoreobviousonthehighway.Keywords:TrafficsafetyTPMSPassive,wireless目录摘要...........................................................................................................................I英文摘要........................................................................................................................II第一章前言..............................................................................................................51.1汽车轮胎气压检测系统背景...................................................................................51.2轮胎爆胎因素分析................................................................................................61.2.1轮胎缺气行驶........................................................................................61.2.2轮胎的温度变化..................................................................................71.３防止轮胎爆胎方法..............................................................................................8第二章TPMS的系统概述...............................................................................102.1TPMS的介绍.......................................................................................................102.1.1TPMS的概念.........................................................................................102.1.2TPMS的功用........................................................................................102.2TPMS种类及工作原理........................................................................................102.2.1间接TPMS的系统组成：...................................................................112.2.2间接式TPMS的作原理.......................................................................112.2.4直接TPMS的系统组成......................................................................122.2.3直接TPMS的工作原理......................................................................12第三章目前常用TPMS的特点及局限性.....................................................143.1直接式TPMS的特点及局限性..........................................................................143.1.1直接式TPMS的特点........................................................................143.1.2直接式TPMS的局限性....................................................................143.2间接式TPMS的特点及局限性..........................................................................143.2.1间接式TPMS的特点........................................................................143.2.2间接式TPMS的局限性......................................................................143.3直接式TPMS与间接式TPMS的综合对比..........................................................15第四章无线无源化的TPMS..............................................................................164.1影响TPMS的环境与因素.................................................................................164.2TPMS无线无源化发展的必要条件....................................................................164.3压电发电设计方案.....................................................