Wireless tire pressure and temperature monitoring system
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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N/A
Issued Date -
Dec 15, 2005
app pub date -
Jun 14, 2004
filing date -
Jun 14, 2004
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A wireless tire pressure and temperature monitoring system comprises a wireless monitor and transmitter unit installed on the wheel rim and a digital receiver and display unit equipped near the driver's seat. The wireless monitor and transmitter unit further includes a pressure sensor; a temperature sensor; a differential amplifier connected to the pressure sensor, an attenuator connected to the temperature sensor; a micro controller for calculating and processing the pressure signal received from the differential amplifier and the temperature signal received from the attenuator; a transmitter for transmitting the signals to the digital receiver and display unit via a filter and a resonant antenna so that the driver is able to be informed of the tire stability of the vehicle to assure traffic security. A centrifugal switch connected to the micro controller is actuated to start monitoring when the vehicle speed exceeds a defined range (10 km/hr.about.20 km/hr), and stop monitoring after the vehicle speed drops down below the aforesaid range for about five minutes.
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