Passenger weight measuring apparatus

A passenger weight measuring apparatus comprising:

• a load deformation body being distorted and deformed upon application of a load thereto;
• a load detector for detecting the load from the distortion deformation amount occurring on the load deformation body;
• and
• an abnormal load detector for setting a passenger weight load range for the load from the load detector, outputting a first load detection signal responsive to the load if the load from the load detector is in the passenger weight load range, outputting a second load detection signal provided by clamping the first load detection signal when a positive load of a predetermined load from the upper limit value of the passenger weight load range is detected or when a negative load of a predetermined load from the lower limit value of the passenger weight load range is detected, and outputting a third load detection signal which becomes a power supply potential signal or a ground potential signal when any other load is detected.

A passenger weight measuring apparatus comprising:

• a load deformation body being distorted and deformed upon application of a load thereto;
• a load detector for detecting the load from the distortion deformation amount occurring on the load deformation body;
• and
• an abnormal load detector for setting for the load a passenger weight load range assumed to be a passenger weight load and an abnormal load range in which a positive load out of the upper limit value of the passenger weight load by a predetermined load is detected or a negative load out of the lower limit value of the passenger weight load by a predetermined load is detected, and outputting to an output terminal an abnormal load detection signal different from a load detection signal changing with the distortion deformation amount in the passenger weight load range if a load in the abnormal load range is detected.