Occupant sensing system and adjustment method thereof
First Claim
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1. An occupant sensing system comprising:
- a plurality of load sensors, each of which senses a load applied to a seat of a vehicle; and
an occupant sensing ECU that determines an occupant state on the seat by comparing a corresponding one of at least one sensed load data value with at least one occupant determination threshold value, wherein;
each of the at least sensed load data value is originated from corresponding one or more of the plurality of load sensors;
the at least one occupant determination threshold value is for determining a type of an occupant on the seat;
the occupant sensing ECU stores at least one adjustment value, each of which is used to adjust a predetermined design value of each of the at least one occupant determination threshold value to obtain the at least one occupant determination threshold value;
each of the at least one adjustment value is a difference between a corresponding one of at least one empty-state 0 point load value and a predetermined design value of the corresponding one of the at least one empty-state 0 point load value; and
each of the at least one empty-state 0 point load value indicates a load applied to the seat in an empty state of the seat and is sensed through the corresponding one or more of the plurality of load sensors.
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Abstract
An occupant sensing ECU determines an occupant state on a seat by comparing occupant determination threshold values with a corresponding sensed load data value, which is originated from load sensors. The ECU stores an adjustment value, which is used to adjust a predetermined design value of each of the occupant determination threshold values. The adjustment value is a difference between an empty-state 0 point load value and a predetermined design value of the empty-state 0 point load value.
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Citations
10 Claims
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1. An occupant sensing system comprising:
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a plurality of load sensors, each of which senses a load applied to a seat of a vehicle; and
an occupant sensing ECU that determines an occupant state on the seat by comparing a corresponding one of at least one sensed load data value with at least one occupant determination threshold value, wherein;
each of the at least sensed load data value is originated from corresponding one or more of the plurality of load sensors;
the at least one occupant determination threshold value is for determining a type of an occupant on the seat;
the occupant sensing ECU stores at least one adjustment value, each of which is used to adjust a predetermined design value of each of the at least one occupant determination threshold value to obtain the at least one occupant determination threshold value;
each of the at least one adjustment value is a difference between a corresponding one of at least one empty-state 0 point load value and a predetermined design value of the corresponding one of the at least one empty-state 0 point load value; and
each of the at least one empty-state 0 point load value indicates a load applied to the seat in an empty state of the seat and is sensed through the corresponding one or more of the plurality of load sensors. - View Dependent Claims (2, 3, 4)
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5. A method for adjusting an occupant sensing system, which includes:
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a plurality of load sensors, each of which senses a load applied to a seat of a vehicle; and
an occupant sensing ECU that determines an occupant state on the seat by comparing a corresponding one of at least one sensed load data value with at least one occupant determination threshold value, wherein each of the at least sensed load data value is originated from corresponding one or more of the plurality of load sensors, and the at least one occupant determination threshold value is for determining a type of an occupant on the seat, the method comprising;
sensing a load applied to the seat in an unloaded empty state of the seat through the plurality of load sensors after installation of the seat, which has the plurality of load sensors, to a vehicle body;
writing at least one adjustment value in the occupant sensing ECU, wherein;
each of the at least one adjustment value is a difference between a corresponding one of at least one empty-state 0 point load value and a predetermined design value of the corresponding one of the at least one empty-state 0 point load value; and
each of the at least one empty-state 0 point load value indicates a load applied to the seat in the empty state of the seat and is sensed through corresponding one or more of the plurality of load sensors; and
adjusting the at least one occupant determination threshold value based on the at least one adjustment value. - View Dependent Claims (6, 7)
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8. A method for adjusting an occupant sensing system, which includes:
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at least one load sensor, each of which senses a load applied to a seat of a vehicle; and
an occupant sensing ECU that includes at least one memory and determines an occupant state on the seat by comparing a corresponding one of at least one sensed load data value with at least one occupant determination threshold value, wherein each of the at least sensed load data value is originated from corresponding one or more of the at least one load sensor, and the at least one occupant determination threshold value is for determining a type of an occupant on the seat, the method comprising;
computing at least one adjustment value based on a corresponding one of at least one sensed load data value, each of which is obtained from corresponding one or more of the at least one load sensor in an empty state of the seat; and
computing at least one occupant determination threshold value by adding a corresponding one of the at least one adjustment value to a predetermined design value of each of the at least one occupant determination threshold value previously stored in a corresponding one of the at least one memory. - View Dependent Claims (9, 10)
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Specification