Transponder and sensor apparatus for sensing and transmitting vehicle tire parameter data
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United States of America Patent
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-
Mar 24, 1998
Grant Date -
N/A
app pub date -
Mar 10, 1995
filing date -
Jun 3, 1994
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A transponder and sensor apparatus with on-board power supply is mounted in or on a vehicle tire. A pressure sensor, a temperature sensor and a tire rotation sensor are mounted in a housing along with the transponder, the power supply and an antenna. Upon receiving an interrogation signal from a remote interrogator, the transponder activates the sensors to sense tire pressure and temperature and then backscatter-modulates the radio frequency signal from the interrogator with the tire condition parameter data from the sensors to return the backscatter modulated signal to the interrogator.
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