公开(公告)号：WO9736758A2

公开(公告)日：1997-10-09

申请号：PCT/US9602852

申请日：1996-03-29

Applicant: HANDFIELD MICHAEL ,  LALIBERTE HELEN

Inventor： HANDFIELD MICHAEL ,  LALIBERTE HELEN

IPC: B60C23/04 ,  H01C10/10 ,  H01Q1/22 ,  H10C10/10

CPC classification number: H01Q1/2241 ,  B60C23/0408 ,  G06K19/07764 ,  H01C10/106 ,  H01Q1/22

Abstract: A pneumatic tire monitoring system is disclosed which provides a pressure sensor/transponder unit for each pneumatic tire of a vehicle to monitor tire pressure. A coded signal transmitted from each transponder unit is received by a multi-purpose receiver which may provide information to the vehicle operator or to other vehicle systems and subsystems. Each transponder unit is characterized by ultra low power consumption to extend the useful battery life. The transponder units may be mounted within the vehicle tires, or externally mounted. Impedance matching circuitry allows the use of the wheel rims with the transmitting antenna so as to avoid doppler shift induced by the rotating antenna and frequency drift induced by capacitive coupling.

Abstract translation: 公开了一种充气轮胎监测系统，其提供用于车辆的每个充气轮胎的压力传感器/转发器单元以监测轮胎压力。 从每个应答器单元发送的编码信号由多用途接收器接收，该多用途接收器可向车辆操作者或其他车辆系统和子系统提供信息。 每个应答器单元的特征在于超低功耗以延长有用的电池寿命。 应答器单元可以安装在车辆轮胎内部或外部安装。 阻抗匹配电路允许使用发射天线的轮缘，以避免由旋转天线引起的多普勒频移和由电容耦合引起的频率漂移。