基于MPXY8300的TPMS传感器设计

摘要

Focusing on how to improve wireless transmission efficiency and reduce the mass and volume of TPMS to meet the tire balance problem,we design a tire pressure monitoring transmitter based on high integrated wireless sensor MPXY8300,and introduce the RF output impedance network matching using Smith chart and the application of software MPXY8300. Through experimental tests and debugging of sensor nodes, the measuring error of pressure is lees than ±7 kPa and the measuring error of temperature less than ±2 ℃ .which indicates that the sensor nodes have good working performance and accuracy.%针对如何提高轮胎压力检测系统(Tire Pressure Monitoring System,TPMS)无线传输效率以及减少TPMS的质量和体积以满足汽车轮胎平衡的问题,给出一种基于高度集成芯片MPXY8300的无线轮胎压力传感器设计方案.阐述了传感器的硬件电路设计和用Smith圆图进行无线发射电路网络匹配方法,给出MPXY8300软件设计及内部嵌入的固件使用方法.通过对传感器节点的实验测试,轮胎气体压力的最大测量误差为±7kPa,温度测量误差为±2℃,表明本设计具有良好的工作性能和准确度.