System and method for remote tire pressure monitoring with low frequency initiation
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United States of America Patent
Stats
-
Jan 4, 2005
Grant Date -
Sep 25, 2003
app pub date -
Dec 18, 2002
filing date -
Mar 25, 2002
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A system for remote monitoring of vehicle tire pressure includes monitors mounted in the tires, each including a tire pressure sensor, a transmitter for transmitting a tire pressure signal, a battery for the transmitter, and a receiver for receiving an initiation signal. Initiators are mounted on-board the vehicle, each initiator associated with one of the tire monitors. Each initiator is for use in generating a low frequency initiation signal for receipt by a tire receiver to cause the transmitter to transmit a tire pressure signal. A vehicle mounted controller activates the initiators in order to generate the low frequency initiation signals, and processes the tire pressure signals to convey tire pressure information to a user. The controller further activates the initiators in order to generate a low frequency electromagnetic field for use in recharging the batteries in the tire monitors.
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