Apparatus, method and program for alarming abnormality in...

Details Apparatus, method and program for alarming abnormality in... Apparatus, method and program for alarming abnormality in...

2006-12-01

2009-11-17

Wu, Daniel (Department: 2612)

Communications: electrical

Land vehicle alarms or indicators

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

C340S442000, C340S443000, C073S146200, C116S03400R, C702S148000

Reexamination Certificate

active

07619510

ABSTRACT:
The present invention provides an apparatus, method and program for alarming abnormality in tire air-pressure which prevent the issuance of an erroneous alarm and thus determine abnormality in tire air-pressure even when a rotational velocity of the tire changes by causes other than a decrease in an air pressure. An apparatus for alarming abnormality in tire air-pressure decrease detects a change in a relationship between wheel velocities of front wheel tires and those of rear wheel tires, and replaces a relationship between the wheel velocities of the front wheel tires and those of the rear wheel tires with a relationship between wheel velocities of front wheel tires and those of rear wheel tires obtained after the change of the relationship, thereby determining abnormality in air-pressure when the change is detected.

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Mou et al.; “Introduction to Tire Pressure Monitoring System and Its Two Solutions”; Vehicle Electric Apparatus, pp. 54-56, 2005.

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