SEAT BACK LOAD SENSOR

摘要

A vehicle seat occupant position sensor has one of four mechanisms to provide input with respect to how a seat occupant is engaged with a seat back (20). The first mechanism has some of the individual tension wires (32) forming the flexolator (24) pass through magnetostrictive sensors (38) to detect in wire tension. Another mechanism employs a potentiometer (58) geared so that relative deflection between the seat back (20) and the seat recliner is amplified. A further mechanism is a magnetostrictive sensor (38) that senses the stress in a seat back that is loaded by the seat occupant leaning against the seat back (20). Lastly, a bladder (40) filled with a fluid provides pressure measurements as an indicator of the force generated by the vehicle seat occupant leaning against the seat back (20).