Load sensor, method of detecting load and pedestrian...

Details Load sensor, method of detecting load and pedestrian... Load sensor, method of detecting load and pedestrian...

2005-10-28

2008-11-25

Pyo, Kevin (Department: 2878)

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

C250S2140AG, C250S2140AG, C340S555000

Reexamination Certificate

active

07456382

ABSTRACT:
A load sensor includes a optical fiber sensor that provides output analog signals in response to shocks of various magnitudes caused by hits by a vehicle on various objects, two or more amplifiers each of which approximates a non linear function of the analog signals and a unit that converts the linear functions into digital data. Therefore, each analog signal either in a lower magnitude range or a higher magnitude range can be amplified by one of the amplifiers that has a more suitable gain, so that the magnitude of the shock can be accurately converted into digital data for a pedestrian protection airbag system.

REFERENCES:
patent: 4830461 (1989-05-01), Ishiharada et al.
patent: 5600133 (1997-02-01), Spillman, Jr.
patent: 5658011 (1997-08-01), Byon
patent: 6739177 (2004-05-01), Sato et al.
patent: 7098445 (2006-08-01), Ishihara
patent: 2004/0068357 (2004-04-01), Kiribayashi
patent: A-6-300691 (1994-10-01), None

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