CAPACITIVE DETECTION DEVICE
First Claim
1. A capacitive detection device for a vehicle, comprisinga sensing electrode for generating an oscillatory electric field in a detection space;
- a shielding electrode arranged on a side of said sensing electrode turned away from said detection space;
a circuit ground and a ground connector, said ground connector connecting said circuit ground to a chassis ground of said vehicle; and
at least one shunt capacitor connected between said circuit ground and said shielding electrode, said at least one shunt capacitor having a capacitance at least 25 times higher than a capacitance between said shielding electrode and chassis ground of said vehicle.
1 Assignment
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Accused Products
Abstract
A capacitive detection device (20) for a vehicle comprises a sensing electrode (26) for generating an oscillatory electric field in a detection space and a shielding electrode (28) arranged on a side of the sensing electrode turned away from the detection space. The capacitive detection device comprises a circuit ground and a ground connector for connecting the circuit ground to chassis ground of the vehicle. At least one shunt capacitor is connected between circuit ground and the shielding electrode. The at least one shunt capacitor has a capacitance at least 25 times higher than the capacitance between the shielding electrode and the chassis ground of the vehicle.
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Citations
12 Claims
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1. A capacitive detection device for a vehicle, comprising
a sensing electrode for generating an oscillatory electric field in a detection space; -
a shielding electrode arranged on a side of said sensing electrode turned away from said detection space; a circuit ground and a ground connector, said ground connector connecting said circuit ground to a chassis ground of said vehicle; and at least one shunt capacitor connected between said circuit ground and said shielding electrode, said at least one shunt capacitor having a capacitance at least 25 times higher than a capacitance between said shielding electrode and chassis ground of said vehicle. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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Specification