TPMS系統CAN總線接口

電氣工程論文編號:DQ144   論文字數:12867,頁數:30

目 錄
摘要…………………………………………………………………………………………………..I
Abstract………………………………………………………………………………………………. II
1 緒論………………………………………………………………………………………..…..….1
2 總體方案設計…………………………………………………...………………………….…..2
2.1 系統總體功能分析……………………………………………………………….……………2
2.2 系統總體軟件流程……………………………………………………………………….…....3
2.3 CAN總線概述…………………………………………………………………….……4
2.4 輪胎模塊設計…………………………………………………………………….……5
2.5 直接式TPMS…………………………………………………………………….……5
3 信號發射系統原理………………………………………………………………………..…...7
 3.1 RF傳輸協議………………………………………………………..…………….……….7
 3.2 LF傳輸協議…………………………………………..……………..………………7
 3.3 發射模塊基本程序流程………………………………………..……………..………………8
4 TPMS的工作原理原理…………………………………………………………..….……….…..10
 4.1 基于CAN總線的的輪胎自動定位…………………………………….…………………...10
 4.2 TPMS的試驗方法研究………………………………………………………….………...…11
        4.2.1  TPMS的低壓報警功能………………………………………...………………..…11
        4.2.2  TPMS的壓力探測精度……………………………………………………….……12
        4.2.3 TPM的耐壓性………………………………………………..….………….13
        4.2.4 TPMS的溫度報警功能………………………………………………..….………….13
        4.2.5 TPMS的壽命……………………………………………………..….………….14
        4.2.6 TPMS的耐旋轉加速度性能…………………………………………..….………….14
        4.2.7 TPMS的耐濕度影響……………………………………………..….………….15
        4.2.8 TPMS對不同安裝方式傳感器的要求………………………………..….………….15
        4.2.9 TPMS的電磁兼容性……………………………………………..….………….15
 4.2.10 TPMS的耐低溫性……………………………………………………..….………….15
 4.3  TPMS的未來展望……………………………………………………………….………...…16
5 結論……………………………………………………………………………..………….……17
致 謝………………………………………………………………………………..…………….……19
參考文獻…………………………………………………………………………………………....…19
附 錄1：國外對TPMS傳感器對環境的適應性要求…………………………..………20
附 錄2：系統總圖………………………………………………………………..………21
附 錄3：系統程序………………………………………………………………..………21

摘  要

 輪胎是汽車的重要部件，其可靠性對汽車行駛安全具有重要意義。全世界每年因輪胎故障所引發的交通事故占很大比例。研究表明輪胎氣壓是造成輪胎故障的重要原因是輪胎氣壓不足或超標，僅會增大耗油、減少輪胎乃至整車壽命，更會造成嚴重的爆胎事故，因此保持標準的車胎氣壓和及時發現車胎漏氣是防止輪胎故障和爆胎的關鍵。
 TPMS足汽車輪胎壓力監視系統“Tire Pressure Monitoring System”的英文縮寫形式，主要用于，汽車行駛實時的對輪胎進行自動檢測．對輪胎漏氣和低氣壓進行報警．以保障行車安全。TPMS屬于主動型安全系統，可在輪胎出現危險征兆時及時預警，從而將事故消滅在萌芽狀態。相對于汽車ABS、EDS、EPS等被動型安全系統，TPMS有更好的避災性。近年來全球TPMS市場需求正在快速增長，對TPMS的研發已成為汽車電子產品設計的重點。TPMS主要有兩種實現方式，即間接式(Wheel—Speed Based)TPMS和直接式(Pressme—SensorBased)TPMS，這兩種系統各具特點。

關鍵詞：輪胎壓力監視；直接式；報警；安全系統

Abstract

 Tires is an important component of motor vehicles, the reliability of steam: vehicles of great significance to safety. Worldwide each year due to tire failure caused by a large proportion of traffic accidents. Research indicates that tire pressure is an important reason for tire failure: inadequate or excessive tire pressure only increases fuel consumption, reduce tire life as well as vehicles, this may result in serious accidents puncture, the tire pressure to maintain standards and to detect flat tires to prevent tire failures and the key blow.
 TPMS Tire Pressure adequate monitoring system "Tire Pressure Monitoring System" form of the letters used, Car tire of the real-time automatic detection. On a flat tire and the low pressure alarm. In order to protect the traffic safety. TPMS are active safety systems, tires can be dangerous warning signs in time, so that the accident nipped in the bud. Compared with the vehicle ABS, EDS, EPS, such as passive safety systems, TPMS better avoid sex. Global market demand for TPMS in recent years is the rapid growth of research and development of TPMS automotive electronics have become the focus of product design. TPMS There are two main ways, namely indirect (Wheel-Speed Based) TPMS and direct (Pressme-SensorBased) TPMS, which have the characteristics of the two systems.
Keywords: Tire pressure monitoring; Direct; Alarm; Security systems.