Seat belt tension prediction

a seat belt and tension prediction technology, applied in the direction of instruments, pedestrian/occupant safety arrangements, force/torque/work measurement apparatus, etc., can solve the problem of complete loss of contact with the seat belt, and achieve the effect of accurate calculation of seat belt tension
USRE41790E1Inactive Publication Date: 2010-10-05JOYSON SAFETY SYST ACQUISITION LLC
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Patent Information

Authority / Receiving Office
US · United States
Patent Type
Patents(United States)
Current Assignee / Owner
JOYSON SAFETY SYST ACQUISITION LLC
Publication Date
2010-10-05
Estimated Expiration
Not applicable · inactive patent

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Abstract

A vehicle seat belt tension prediction system and method comprises an accelerometer having an output signal responsive to vertical acceleration of the vehicle, a seat weight sensor having an output signal responsive to the force exerted by a mass resting on the seat, and a processor means for calculating seat belt tension. The processor is provided with a plurality of inputs operatively coupled to the accelerometer output and seat weight sensor output. Suitable programming is provided to instruct the processor to calculate the average mass resting on the vehicle seat and predict the force that should be exerted on the seat for a measured level of vertical acceleration assuming zero belt tension. The processor then compares the actual force measured by the seat weight sensor with the predicted force to determine seat belt tension thereby obviating the necessity of complex hardware in physical contact with the seat belt system.
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Description

CROSS REFERENCE TO RELATED APPLICATIONS

[0001] More than one reissue application has been filed for reissue of U.S. Pat. No. 6,161,439. In particular, two applications for reissue of U.S. Pat. No. 6,161,439 have been filed: Reissue application Ser. No. 10 / 326,170, filed Dec. 19, 2002, and the present reissue application, which is a divisional reissue application thereof.

[0002] The instant application claims the benefit of U.S. Provisional Application Ser. No. 60 / 046,233, filed May 12, 1997.

[0003] Co-pending U.S. application Ser. No. 08 / 993,701 entitled “Seat Weight Sensor Having Fluid Filled Bladder”, filed on Dec. 18, 1997, claiming benefit of U.S. Provisional Application Ser. No. 60 / 032,380 filed on Dec. 19, 1996, and assigned to the assignee of the instant invention discloses a hydrostatic weight sensor comprising a fluid filled bladder and a pressure sensor for sensing the weight of an occupant in a vehicle seat for controlling a safety restraint system. U.S. application Ser. No. 08...

Claims

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