Seat weight measuring apparatus
First Claim
1. A seat weight measuring apparatus for passenger cars comprising:
- a plurality of load sensors for supporting the seat and measuring the load of the seat, each sensor being adapted to produce an output; and
an adder for summing the outputs of said load sensors to obtain the weight of the seat;
a mechanism for obtaining the seat weight based on a value other than the output of the adder when at least one of the outputs of the load sensors exceeds a predetermined value.
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Accused Products
Abstract
A seat load measuring apparatus that can provide an accurate load output even when one or more sensors are exerted with a load in excess of its measurable load is provided. In a first instance, the output of each load sensor is read at Step S11. Subsequently, at step S12, whether or not there is any sensor whereof the output is in excess of the predetermined value is determined. If no output of these sensors is in excess of the predetermined value, it is regarded as normal, and the seat weight is obtained by summation of the outputs of the sensors at Step S13. When the output of any sensor exceeds the predetermined value, it is determined that an offset load is exerted thereon and thus the output of the sensor in question cannot be trusted. Therefore, the seat weight obtained immediately before the output of any of the sensors exceeds the predetermined value is regarded as the seat weight.
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Citations
18 Claims
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1. A seat weight measuring apparatus for passenger cars comprising:
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a plurality of load sensors for supporting the seat and measuring the load of the seat, each sensor being adapted to produce an output; and
an adder for summing the outputs of said load sensors to obtain the weight of the seat;
a mechanism for obtaining the seat weight based on a value other than the output of the adder when at least one of the outputs of the load sensors exceeds a predetermined value. - View Dependent Claims (2, 3, 4, 5)
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6. A seat weight measuring apparatus for vehicles, comprising:
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a plurality of load sensors for supporting the seat and measuring the load of the seat, each sensor being adapted to providing an output; and
an adder for summing the outputs of the load sensors to obtain the weight of the seat;
a mechanism for regarding a value other than the output of the sensor in question as the value of the load sensor to be supplied to the adder when at least one of the outputs of the load sensors exceeds the predetermined value is provided. - View Dependent Claims (7, 8, 9)
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10. A method for determining seat weight comprising the steps of:
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providing a plurality of load sensors for sensing the load of the seat, each load sensor producing an output;
summing the outputs of the load sensors to obtain the weight of the seat;
determining the seat weight based on a value other than the output of the adder when at least one of the outputs of the load sensors exceeds a predetermined value. - View Dependent Claims (11, 12, 13, 14, 16, 17, 18)
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15. A method for determining seat weight comprising the steps of:
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providing a plurality of load sensors for sensing the load of the seat, each load sensor producing an output;
summing the outputs of the load sensors to obtain the weight of the seat;
regarding a value other than the output of one of the load sensors as the value of the load sensor to be supplied to the adder when at least one of the outputs of the load sensors exceeds the predetermined value is provided.
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Specification