Capacitive occupant sensor and capacitive occupant detection apparatus
First Claim
1. A capacitive occupant sensor for detecting an occupant sitting on a seat cushion of a seat of a vehicle, the capacitive occupant sensor comprising:
- a capacitive sensor mat disposed in the seat cushion and having a surface;
a cushion member disposed on the surface of the capacitive sensor mat; and
a floating electrode disposed on an opposite side of the cushion member from the surface of the capacitive sensor mat, wherein;
a projected area of the floating electrode with respect to the surface of the capacitive sensor mat is smaller than the surface of the capacitive sensor mat;
the floating electrode is in an electrically-floating state with respect to the capacitive sensor mat; and
the occupant is detected based on an occupant capacitance between the capacitive sensor mat and the occupant and a floating capacitance between the capacitive sensor mat and the floating electrode.
1 Assignment
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Accused Products
Abstract
A capacitive occupant sensor for detecting an occupant sitting on a seat cushion of a seat of a vehicle includes a capacitive sensor mat, a cushion member, and a floating electrode. The capacitive sensor mat is disposed in the seat cushion and has a surface. The cushion member is disposed on the surface of the capacitive sensor mat. The floating electrode is disposed on an opposite side of the cushion member from the surface of the capacitive sensor mat. A projected area of the floating electrode with respect to the surface is smaller than the surface. The floating electrode is in an electrically-floating state with respect to the capacitive sensor mat. The occupant is detected based on an occupant capacitance between the capacitive sensor mat and the occupant and a floating capacitance between the capacitive sensor mat and the floating electrode.
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Citations
6 Claims
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1. A capacitive occupant sensor for detecting an occupant sitting on a seat cushion of a seat of a vehicle, the capacitive occupant sensor comprising:
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a capacitive sensor mat disposed in the seat cushion and having a surface; a cushion member disposed on the surface of the capacitive sensor mat; and a floating electrode disposed on an opposite side of the cushion member from the surface of the capacitive sensor mat, wherein; a projected area of the floating electrode with respect to the surface of the capacitive sensor mat is smaller than the surface of the capacitive sensor mat; the floating electrode is in an electrically-floating state with respect to the capacitive sensor mat; and the occupant is detected based on an occupant capacitance between the capacitive sensor mat and the occupant and a floating capacitance between the capacitive sensor mat and the floating electrode. - View Dependent Claims (2, 3, 4, 5, 6)
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Specification