Weight sensor for vehicular safety restraint systems

Details Weight sensor for vehicular safety restraint systems Weight sensor for vehicular safety restraint systems

1997-11-19

2000-10-10

English, Peter C.

Motor vehicles

With means for promoting safety of vehicle, its occupant or...

Responsive to absence or inattention of operator, or...

280735, 340667, 177210EM, B60R 2101

Patent

active

061291684

ABSTRACT:
An weight sensor (16) for use in the crash management system of a motor vehicle's safety restraint system (10). The weight sensor (16) functions to determine the weight of an occupant sitting on a vehicle seat (12) and is mounted between the seat frame (42) and mounting structure (46) of the vehicle seat (12). The weight sensor (16) includes a position sensing unit (52) retained in an enclosed housing assembly (50). The weight of a seat occupant causes a portion (56) of the housing assembly (50) to deflect and the position sensing unit (52) measures the corresponding displacement caused by such deflection. The position sensing unit (52) includes a Hall effect sensor (70) fixed to the rigid portion (54) of the housing assembly (50) and a magnet (74) fixed to the deflectable portion (56) of the housing assembly (50). As such, movement of the magnet (74) relative to the Hall effect sensor (70) generates a varying electric output signal which is indicative of the weight of the occupant or object causing the deflection.

REFERENCES:
patent: 4354562 (1982-10-01), Newman
patent: 4738325 (1988-04-01), Bullivant et al.
patent: 5232243 (1993-08-01), Blackburn et al.
patent: 5481078 (1996-01-01), Asche
patent: 5570903 (1996-11-01), Meister et al.
patent: 5810392 (1998-09-01), Gagnon

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