汽车轮胎压力监测系统的无线控制策略

Wireless control strategy about tire pressure monitoring system

在汽车轮胎压力监测系统(TPMS)设计中,无线控制策略是其设计中的重点.结合当前TPMS无线控制策略的实现方案,提出:采用断续发射方式使系统在能耗上更节省;运用环路天线和声表面波滤波器来有效克服干扰,提高系统的可靠性能.测试中,系统发射模块功耗10μW·s,若用锂电池全天候工作可运行2.5年,能满足实际需要.

In the tire pressure monitoring system（TPMS） design,wireless control strategy is the design stress.In this paper,the wireless control strategies based on the current TPMS were summarized.Then the intermittent launch manner was adopted to reduce power consumption and the loop antenna and SAW filter were utilized to effectively overcome the interference and increase system reliability.In the test,the system energy consumption was so low that the transmitter module consumed 10 μWs,thus the lithium battery can work around the clock for 2.5 years to meet the practical needs.