Occupant detecting apparatus capable of improving detection accuracy
First Claim
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1. An occupant detecting apparatus for detecting an occupant seated on a passenger seat of a vehicle with an airbag for said occupant, comprising:
- a load sensor provided in a bottom part of said seat;
a plurality of first electric field sensors provided in the bottom part of said seat;
a plurality of second electric field sensors provided in a rear part of said seat; and
an airbag inflating permission control unit, connected to said load sensor and said first and second electric field sensors, for permitting inflation of said airbag in accordance with output signals of said load sensor and said first and second electric field sensors, wherein said airbag inflating permission control unit compares an output signal of said load sensor with first and second load reference values, compares an average value of output signals of said first electric field sensors with first and second electric field reference values, and compares an average value of output signals of said second electric field sensors with third and fourth electric field reference values, said first load reference value being higher than said second load reference value, said first electric field reference value being higher than said second electric field reference value, said third electric field reference value being higher than said fourth electric field reference value.
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Abstract
In an occupant detecting apparatus for detecting an occupant seated on a passenger seat of a vehicle with an airbag for the occupant, a load sensor is provided in a bottom part of the seat. A plurality of first electric field sensors are provided in the bottom part of the seat, and a plurality of second electric field sensors are provided in a rear part of the seat. An airbag inflating permission control unit permits inflation of the airbag in accordance with output signals of the load sensor and the first and second electric field sensors.
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Citations
18 Claims
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1. An occupant detecting apparatus for detecting an occupant seated on a passenger seat of a vehicle with an airbag for said occupant, comprising:
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a load sensor provided in a bottom part of said seat;
a plurality of first electric field sensors provided in the bottom part of said seat;
a plurality of second electric field sensors provided in a rear part of said seat; and
an airbag inflating permission control unit, connected to said load sensor and said first and second electric field sensors, for permitting inflation of said airbag in accordance with output signals of said load sensor and said first and second electric field sensors, wherein said airbag inflating permission control unit compares an output signal of said load sensor with first and second load reference values, compares an average value of output signals of said first electric field sensors with first and second electric field reference values, and compares an average value of output signals of said second electric field sensors with third and fourth electric field reference values, said first load reference value being higher than said second load reference value, said first electric field reference value being higher than said second electric field reference value, said third electric field reference value being higher than said fourth electric field reference value. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An occupant detecting apparatus for detecting an occupant seated on a passenger seat of a vehicle with an airbag for said occupant, comprising:
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a load sensor provided in a bottom part of said seat;
a plurality of first electric field sensors provided in the bottom part of said seat;
a plurality of second electric field sensors provided in a rear part of said seat; and
an airbag inflating permission control unit, connected to said load sensor and said first and second electric field sensors, for permitting inflation of said airbag in accordance with output signals of said load sensor and said first and second electric field sensors, wherein antenna electrodes of said first and second electric field sensors are alternately arranged on front and back surfaces, respectively, of a base cloth, each of said antenna electrodes on the front surface of said base cloth having a first extension on a side of said base cloth and a second extension on the back surface of said base cloth.
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12. An occupant detecting apparatus for detecting an occupant seated on a passenger seat of a vehicle with an airbag for said occupant, comprising:
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a plurality of first electric field sensors provided in the bottom part of said seat;
a second electric field sensor provided in a rear part of said seat; and
an airbag inflating permission control unit, connected to said first and second electric field sensors, for permitting inflation of said airbag in accordance with output signals of said first and second electric field sensors, wherein said airbag inflating permission control unit compares an average value of output signals of said first electric field sensors with first and second reference values, and compares an output signal of said second electric field sensor with a third reference value, said first reference value being higher than said second reference value. - View Dependent Claims (13, 14, 15, 16, 17)
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18. An occupant detecting apparatus for detecting an occupant seated on a passenger seat of a vehicle with an airbag for said occupant, comprising:
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a load sensor provided in a bottom part of said seat;
a plurality of first electric field sensors provided in the bottom part of said seat;
a plurality of second electric field sensors provided in a rear part of said seat; and
an airbag inflating permission control unit, connected to said load sensor and said first and second electric field sensors, for permitting inflation of said airbag in accordance with output signals of said load sensor and said first and second electric field sensors, wherein antenna electrodes of said first electric field sensors are alternately arranged on front and back surfaces, respectively, of a base cloth, each of said antenna electrodes on the front surface of said base cloth having a first extension on a side of said base cloth and a second extension on the back surface of said base cloth.
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Specification