Noise reduction for flexible sensor material in occupant detection
First Claim
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1. A sensor system for occupant detection, the sensor system comprising:
- flexible circuit material having a plurality of apertures;
at least one antenna on the flexible circuit material;
an occupant detection circuit connected with the at least on antenna, the occupant detection circuit operable to detect a presence or characteristic of an occupant in response to transmitted energy.
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Abstract
Film material for occupant detection in a vehicle is patterned for noise reduction. Flexible circuit material is used for positioning one or more antennas or sensors for occupant detection within a seat. The flexible circuit material is between the fabric or seat covering material and foam. Holes in the flexible circuit material may reduce noise caused by the flexible circuit material. For occupant detection with antennas and transmitted energy, such as capacitance or electric field sensing, the holes may reduce noise even when the holes are smaller than the antennas.
78 Citations
26 Claims
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1. A sensor system for occupant detection, the sensor system comprising:
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flexible circuit material having a plurality of apertures;
at least one antenna on the flexible circuit material;
an occupant detection circuit connected with the at least on antenna, the occupant detection circuit operable to detect a presence or characteristic of an occupant in response to transmitted energy. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A method for noise reduction of film material in a seat for occupant detection, the method comprising:
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providing a plurality of through holes in the film material and a conductive area on the film material;
positioning the film material adjacent to foam material; and
positioning seat-covering material adjacent the film material. - View Dependent Claims (15, 16, 17)
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18. In a sensor system for occupant detection with a film material, the film material having a first electrode to be positioned in a vehicle seat, the first electrode having a first area on the film material, an improvement comprising:
a first hole in the film material, the first hole having a first hole area less than the first area. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25, 26)
Specification