Collision detection device which uses variation of an...

Details Collision detection device which uses variation of an... Collision detection device which uses variation of an...

2011-01-04

2011-01-04

Patidar, Jay M (Department: 2858)

Electricity: measuring and testing

Magnetic

Displacement

C324S207260, C180S274000, C340S436000, C340S551000

Reexamination Certificate

active

07863891

ABSTRACT:
A collision detection device is provided with a coil which is arranged at an inner side of an outer panel of a body portion of a vehicle and faces the outer panel to generate a magnetic field in a direction toward the outer panel, and a collision determining unit for determining a collision with the body portion of the vehicle based on a variation of an inductance of the coil. The collision determining unit includes a resonance circuit which is constructed of the coil. When there occurs a collision with the vehicle body portion, a distance between the outer panel and the coil will decrease so that an inductance of the coil can instantly decrease. Therefore, a resonance frequency of the resonance circuit will increase and be detected, thus shortening the response time.

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Office action dated Oct. 26, 2009 in corresponding German Application No. 10 2007 017 496.0.
Office action dated Mar. 10, 2008 in German Application No. 10 2007 017 496.0 with English translation thereof.

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