发明名称 |
Tire pressure monitoring system and sensor therefor |
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.
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申请公布号 |
US2007194895(A1) |
申请公布日期 |
2007.08.23 |
申请号 |
US20060360950 |
申请日期 |
2006.02.23 |
申请人 |
DYMOS CO., LTD. D/B/A DYMOS OF AMERICA |
发明人 |
APOSTOLOPOULOS DIMI;HEYS STUART;TEZA JAMES;WAGNER MICHAEL;KIM DONGGI |
分类号 |
B60C23/00 |
主分类号 |
B60C23/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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