公开(公告)号：US20070194895A1

公开(公告)日：2007-08-23

申请号：US11360950

申请日：2006-02-23

申请人： Dimi Apostolopoulos ,  Stuart Heys ,  James Teza ,  Michael Wagner ,  Donggi Kim

发明人： Dimi Apostolopoulos ,  Stuart Heys ,  James Teza ,  Michael Wagner ,  Donggi Kim

IPC分类号： B60C23/00

CPC分类号： B60C23/0428 ,  B60C23/0496

摘要： A system for monitoring tire pressure and producing a first signal in the event that a low tire pressure condition has been sensed and a second, different signal in the event that a low tire pressure condition has not been sensed and a third signal in the event that the system is not operable. The system comprises a sensor for each tire and an associated transceiver antenna coil. Each sensor comprises a pressure switch and a circuit that has a first resonant frequency when the pressure switch is in a first state and a second, different resonant frequency when the switch is in a second state. An excited circuit associated with each transceiver antenna coil generates an AC electromagnetic field across the transceiver antenna coil and a detector circuit is operable to demodulate information communicated passively by the sensor that reflects its resonant frequency.

摘要翻译： 一种用于在已经感测到低的轮胎压力状况的情况下监测轮胎压力并产生第一信号的系统，并且在没有感测到低的轮胎压力状况的情况下产生第二不同的信号，并且在第 系统不可操作。 该系统包括用于每个轮胎的传感器和相关联的收发器天线线圈。 每个传感器包括压力开关和当压力开关处于第一状态时具有第一共振频率的电路和当开关处于第二状态时具有第二不同谐振频率的电路。 与每个收发器天线线圈相关联的激励电路在收发器天线线圈之间产生交流电磁场，并且检测器电路可操作以解调被传感器无源通信的反映其谐振频率的信息。

公开(公告)号：US07336164B2

公开(公告)日：2008-02-26

申请号：US11360950

申请日：2006-02-23

申请人： Dimi Apostolopoulos ,  Stuart Heys ,  James Teza ,  Michael Wagner ,  Donggi Kim

发明人： Dimi Apostolopoulos ,  Stuart Heys ,  James Teza ,  Michael Wagner ,  Donggi Kim

IPC分类号： B60C23/00

CPC分类号： B60C23/0428 ,  B60C23/0496

摘要： A system for monitoring tire pressure and producing a first signal in the event that a low tire pressure condition has been sensed and a second, different signal in the event that a low tire pressure condition has not been sensed and a third signal in the event that the system is not operable. The system comprises a sensor for each tire and an associated transceiver antenna coil. Each sensor comprises a pressure switch and a circuit that has a first resonant frequency when the pressure switch is in a first state and a second, different resonant frequency when the switch is in a second state. An excited circuit associated with each transceiver antenna coil generates an AC electromagnetic field across the transceiver antenna coil and a detector circuit is operable to demodulate information communicated passively by the sensor that reflects its resonant frequency.

摘要翻译： 一种用于在已经感测到低的轮胎压力状况的情况下监测轮胎压力并产生第一信号的系统，并且在没有感测到低的轮胎压力状况的情况下产生第二不同的信号，并且在第 系统不可操作。 该系统包括用于每个轮胎的传感器和相关联的收发器天线线圈。 每个传感器包括压力开关和当压力开关处于第一状态时具有第一共振频率的电路和当开关处于第二状态时具有第二不同谐振频率的电路。 与每个收发器天线线圈相关联的激励电路在收发器天线线圈之间产生交流电磁场，并且检测器电路可操作以解调被传感器无源通信的反映其谐振频率的信息。