Seat fitted with seating sensor, seating detector and air bag device
First Claim
Patent Images
1. A seat comprising:
- a seating sensor provided on a seat back part for detecting a value and position of a pressure transmitted from a back of an occupant leaning against the seat back part; and
means for calculating a height of the occupant on the basis of the value and position of the pressure detected by said seating sensor.
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Abstract
A seating sensor is provided on a seat back part and/or a seat cushion part of a seat in use for a vehicle such as an automobile, and calculates physical conditions, such as a height and weight of an occupant, to judge whether the subject on the seat is a human or an object. On the basis of the results of such calculation and judgement, the operation of an air bag is controlled. The seating sensor includes a sensing element which is variable in its electric resistance in response to the pressure variation, and the pressing force is detected on the basis of the variation of the electric resistance value.
146 Citations
25 Claims
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1. A seat comprising:
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a seating sensor provided on a seat back part for detecting a value and position of a pressure transmitted from a back of an occupant leaning against the seat back part; and
means for calculating a height of the occupant on the basis of the value and position of the pressure detected by said seating sensor. - View Dependent Claims (2, 3, 4)
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5. A seat comprising:
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a first seating sensor provided on a seat back part for detecting a value and position of a pressure transmitted from a back of an occupant leaning against the seat back part;
a second seating sensor provided on a seat cushion part for detecting a value and position of a pressure transmitted from a hip of the occupant seated on the seat cushion part; and
means for calculating a height and weight of the occupant on the basis of the value and position of the pressure detected by said first and second seating sensors. - View Dependent Claims (6, 7, 8)
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9. A seat comprising:
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a seat body;
a pad contained in the seat body; and
a seating sensor interposed between a surface material of said seat body and said pad, wherein said seating sensor has a plurality of pressure sensitive sections for sensing a value and position of the pressure transmitted from an occupant, and wherein a plurality of protrusions in contact with said pressure sensitive sections are provided on an upper surface of said pad. - View Dependent Claims (10, 11)
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12. A seating detection device comprising:
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a pressure sensitive sensor which is provided at least on a seat cushion part and which detects a pressing force and a pressed position of a seated subject; and
subject determination means for determining what the subject is, based on a variation with time on the pressing force and the pressed position detected by said pressure sensitive sensor, said subject determination means being arranged to compare the detected pressure value with a predetermined reference value, thereby determining the the presence of a human on the seat if variation with time on the pressure is detected and determining the presence of an object on the seat if variation with time on the pressure is detected to be substantially constant. - View Dependent Claims (13, 14, 15)
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16. An air bag apparatus comprising:
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a first seating sensor provided on a seat back part for detecting a value and position of a pressure transmitted from a back of an occupant leaning against the seat back part;
a second seating sensor provided on a seat cushion part for detecting a value and position of a pressure transmitted from a hip of the occupant seated on the seat cushion part;
means for calculating a height and weight of the occupant on the basis of the value and position of the pressure detected by said first and second seating sensors; and
control means for controlling the operation of the air bag in accordance with a result calculated by said means for calculating the height and weight. - View Dependent Claims (17, 18)
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19. An air bag apparatus comprising:
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a pressure sensitive sensor which is provided at least on a seat cushion part and which detects a pressing force and a pressed position of a seated subject;
subject determination means for determining what the subject is, based on a variation with time on the pressing force and the pressed position detected by said pressure sensitive sensor, and subject determination means being arranged to compare the detected pressure value with a predetermined reference value, thereby determining whether the presence of a human on the seat if variation with time on the pressure is detected and determining the presence of an object on the seat if variation with time on the pressure is detected to be substantially constant; and
control means for controlling the operation of the air bag in accordance with a result of determination of said subject determination means. - View Dependent Claims (20, 21, 22)
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23. An air bag apparatus comprising:
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a pressure sensitive sensor provided in the bench part of the seat;
figure determination means for measuring a pressure distribution on the bench part through the pressure- sensitive sensor and determining a physical figure of the occupant on the basis of a distance between two pressure peak points transmitted from a hip of the occupant; and
control means for controlling the operation of the air bag in accordance with a result of determination of said figure determination means. - View Dependent Claims (24, 25)
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Specification