Passenger weight measuring apparatus
First Claim
1. A passenger weight measuring apparatus comprising:
- a load detector for detecting the distortion deformation amount of a load deformation body to which a load based on the weight of a passenger is applied, the load deformation body becoming elastically deformed according to the distortion deformation amount responsive to the magnitude of the applied load, to generate and output a load detection signal corresponding to the load from the distortion deformation amount; and
an abnormal load detector for outputting an abnormal load detection signal in a state in which the abnormal load detection signal is distinguishable from the load detection signal when an abnormal load set in a load region out of a preset passenger weight load detection range for the load is applied to the load deformation body.
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Accused Products
Abstract
In a passenger weight measuring apparatus, each of bend parts of front and rear brackets for supporting a seat to a vehicle main body side becomes bent and deformed in response to the load applied by the weight of the passenger sit in the seat. A load sensor on each the bend part detects the load based on the bend deformation and outputs a voltage signal of magnitude responsive to the load to a signal processor. The processor generates a load detection signal clamped in the voltage range corresponding to a preset passenger weight load range from the voltage signal and outputs the load detection signal to an output terminal. When the detected load is a collision load set in a load region out of the load range, the processor outputs an abnormal load detection signal different from the load detection signal to the same output terminal.
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Citations
12 Claims
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1. A passenger weight measuring apparatus comprising:
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a load detector for detecting the distortion deformation amount of a load deformation body to which a load based on the weight of a passenger is applied, the load deformation body becoming elastically deformed according to the distortion deformation amount responsive to the magnitude of the applied load, to generate and output a load detection signal corresponding to the load from the distortion deformation amount; and
an abnormal load detector for outputting an abnormal load detection signal in a state in which the abnormal load detection signal is distinguishable from the load detection signal when an abnormal load set in a load region out of a preset passenger weight load detection range for the load is applied to the load deformation body. - View Dependent Claims (2, 3, 4, 5, 6, 10, 11, 12)
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7. A passenger weight measuring apparatus comprising:
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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.
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8. A passenger weight measuring apparatus comprising:
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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. - View Dependent Claims (9)
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Specification