Tire pressure monitor having capability of accurately...

Details Tire pressure monitor having capability of accurately... Tire pressure monitor having capability of accurately...

2007-07-13

2011-11-22

Bugg, George (Department: 2612)

Communications: electrical

Land vehicle alarms or indicators

Internal alarm or indicator responsive to a condition of the...

C340S442000, C340S445000, C340S438000, C340S444000, C073S146200, C116S03400R

Reexamination Certificate

active

08063756

ABSTRACT:
A tire pressure monitor provided on a wheel of a vehicle includes a pressure sensor, a transmitter, an acceleration sensor, and a controller. The pressure sensor works to output a pressure signal representative of the inflation pressure of a tire fitted on the wheel. The transmitter works to transmit the pressure signal. The acceleration sensor works to output an acceleration signal representative of a centrifugal acceleration which increases with the running speed of the vehicle. The controller is configured to: 1) determine a change in the centrifugal acceleration for a predetermined time period based on the acceleration signal, 2) determine the vehicle as being in running state when the determined change is greater than or equal to a predetermined threshold, and 3) control the transmitter to transmit the pressure signal when the vehicle is determined as being in running state.

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patent: 2004-189148 (2004-07-01), None

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