间接式无线轮胎保护装置的设计.doc
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- 间接 无线 轮胎 保护装置 设计
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1、摘 要轮胎压力检测系统(Tire Pressure Monitoring System TPMS)是汽车安全行驶的重要保障之一,在社会发展对汽车安全性要求更高的前提下,对轮胎压力检测系统的研究和设计具有广泛的应用背景,而且能带来良好的经济效益和社会效益。该设计具体分析TPMS技术的研究现状和发展前景,并对比间接式TPMS和直接有源式TPMS的优缺点。选择间接式TPMS作为本设计的研究方向,利用霍尔传感器,还有温度传感器检测出轮子的转速差和轮胎的温度等参数,然后通过无线射频方式发射到安装在监视器上。监视器实时显示出两轮轮速差而表现出轮胎差值百分比,轮子的工作情况,比如是否转动和温度是否达到报警值
2、。如果出现任何一种超出限定范围的情况,蜂鸣器开始报警。设计针对间接式轮胎压力检测系统技术实现的关键难点,包括系统预警的可靠性和准确性、传感器检测模块的低功耗性等等,开展了以下工作:1) 对RF发射和接收部分进行纤细的设计,包括配对连接的匹配网络、无线通讯协议已经RF发射接收程序的编写和调试等等;2) 提出改进的基于几个传感器结合技术的预警算法,提高系统预警的正确性和高效性,避免产生告警信号的搂抱和误报情况;3) 分析TPMS应用的环境,在各种复杂环境的设计层面上,分析系统的软硬件设计方案。研究表明,所设计的间接式TPMS系统能对轮胎压力检测系统提供准确的信息。关键词:TPMS;转速测量;温度测
3、量;无线传输AbstractTire pressure monitoring system (Tire Pressure Monitoring System TPMS) is one of the important guarantee for safe driving, on the premise of social development to higher vehicle safety requirements, has been widely applied in the research and design of tire pressure monitoring system,
4、and can bring good economic benefits and social benefits. Research status and development prospects of the design of a concrete analysis of TPMS technology, and compared the advantages and disadvantages of indirect TPMS and direct active TPMS. Select the type of TPMS as the design direction, using e
5、mbedded in the hub of the magnetic steel and installed on the frame of the Holzer sensor, and temperature sensor to detect the parameters of wheel speed difference and the temperature of the tire, and then processed by the single chip to transmit data to the installation on the monitor through wirel
6、ess. Monitor the real-time display of two wheel speed difference and show the tire difference percentage, and the working conditions, such as whether the rotation and the temperature is up to the alarm value. If there is any kind of beyond the limited scope of the situation, the buzzer alarm.Design
7、for the key difficulty of indirect tire pressure detection system technology, including the system of early warning and the reliability and accuracy of sensor detection module, low power consumption and so on, to carry out the work:The design of RF transmitting and receiving part is slender, includi
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