Patent ID: 7100731

Claim:
A method for using a weight detecting system for an occupant sitting on a seat of a vehicle, comprising: obtaining a first output from a first weight detecting unit wherein the first output changes with a change in weight; obtaining a second output from a second weight detecting unit wherein the second output changes inversely at a rate similar to the rate at which the first output changes as weight changes, wherein the first and second weight detecting units are provided under inner and outer edges of a seat of the vehicle, respectively, wherein the first weight detecting unit provides a set of strain resistors on an opposite side of a sensor plate than that of the second weight detecting unit, wherein said first and second weight detecting units have similar characteristic of change in first and second outputs with respect to change in temperature; and calculating the weight of the occupant based on a value obtained by inverting the output from one of the first and second weight-detecting units and adding the inverted output to the output from the other weight-detecting unit.