Torque-based occupant weight estimation apparatus for a vehicle seat
First Claim
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1. Apparatus for estimating the weight of an occupant of a vehicle seat supported by first and second laterally separated floor brackets, the apparatus comprising:
- at least a first torsion bar extending between said first and second floor brackets and rotatably supported thereby;
first and second laterally separated linkage arms coupling a frame of said seat to said first torsion bar for imparting a torque to first torsion bar in relation to said occupant weight; and
a first sensor for measuring the torsion bar torque between said linkage arms to provide an indication of said occupant weight.
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Abstract
A torque-based occupant weight estimation apparatus for a vehicle seat includes front and rear torsion bars through which the seat frame is coupled to a set of floor brackets. The torsion bars are rotatably mounted on the floor brackets, and linkage arms rigidly coupled to opposing ends of each torsion bar are rotatably coupled to the seat frame so as to convert occupant seat weight into torsion bar torque. Torque sensors coupled to the torsion bars provide an indication of occupant weight.
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Citations
6 Claims
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1. Apparatus for estimating the weight of an occupant of a vehicle seat supported by first and second laterally separated floor brackets, the apparatus comprising:
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at least a first torsion bar extending between said first and second floor brackets and rotatably supported thereby;
first and second laterally separated linkage arms coupling a frame of said seat to said first torsion bar for imparting a torque to first torsion bar in relation to said occupant weight; and
a first sensor for measuring the torsion bar torque between said linkage arms to provide an indication of said occupant weight. - View Dependent Claims (2, 3, 4, 5, 6)
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Specification