초록 ▼

A hydrostatic weight sensor comprises a continuous flexible sensing tube incorporated within the seat. A fluid is contained therein and a pressure sensor is operatively coupled thereto. The continuous flexible sensing tube may be arranged in a spiral or serpentine pattern, or comprise a plurality of

A hydrostatic weight sensor comprises a continuous flexible sensing tube incorporated within the seat. A fluid is contained therein and a pressure sensor is operatively coupled thereto. The continuous flexible sensing tube may be arranged in a spiral or serpentine pattern, or comprise a plurality of segments each in fluid communication with a central port. A load applied to the seat causes the continuous flexible sensing tube to deform, thereby increasing the pressure of the fluid contained therein. A signal processor calculates the weight of the occupant from the pressure signal, and controls a safety restraint system responsive to the weight measurement.

대표청구항 ▼

[ I claim:] [1.] A sensor for sensing the weight of an occupant on a vehicle seat, comprising:a. a continuous flexible sensing tube mounted beneath the cushion of the seat and supported by the base of the seat;b. a fluid contained by said flexible sensing tube, whereby said flexible sensing tube is

[ I claim:] [1.] A sensor for sensing the weight of an occupant on a vehicle seat, comprising:a. a continuous flexible sensing tube mounted beneath the cushion of the seat and supported by the base of the seat;b. a fluid contained by said flexible sensing tube, whereby said flexible sensing tube is sealed;c. a pressure sensor operatively coupled to said flexible sensing tube for generating a signal responsive to the pressure of said fluid within said flexible sensing tube; andd. a signal processor for calculating the weight of the occupant from said signal.