Patent ID: 7032700

Claim:
An occupant weight detecting device, comprising: plural load detecting means provided at a seat and outputting a load signal in response to largeness of load applied to the seat; a signal processing device setting an occupant load detection range in which the load applied to the seat can be detected, the signal processing device outputting a variable primary load detection signal based on the load signal in case of the load signal being within the occupant load detection range and a constant secondary load detection signal in case of the load signal being out of the occupant load detection range, a voltage of the constant secondary load detection signal being set out of a voltage range based on the variable primary load detection signal; and a control device to which the primary load detection signal or the secondary load detection signal is inputted, the control device outputting a control signal based on the load, wherein the control device outputs an error detection signal when the signal processing device continues to output the secondary load detection signal during predetermined time.