Capacitive sensor arrangement for switching a door opening on a motor vehicle
First Claim
1. A sensor arrangement for detecting movement gestures towards a motor vehicle, having a capacitive sensor arrangement and at least one control and evaluation device, which is coupled to the sensor arrangement and detects a change in the capacitance of the sensor arrangement with respect to a reference potential,characterised in thatat least two sensor electrode arrangements are arranged at spatially offset positions on the motor vehicle, wherein the sensor electrodes are formed as elongate electrode arrangements and are arranged with the same spatial orientation,wherein one of the sensor electrode arrangements is formed with a longer length than the other sensor electrode arrangement, and the longer sensor electrode arrangement extends beyond the shorter sensor electrode arrangement on both sides in the longitudinal direction,wherein at least one of the sensor electrode arrangements is formed as a capacitively detecting first sensor electrode arrangement which is segmented in sections, wherein the segments are arranged in the longitudinal direction and allow different capacitive detection section by section.
1 Assignment
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Accused Products
Abstract
A sensor arrangement for sensing movement gestures on a motor vehicle with a capacitive sensor arrangement and at least one control and evaluation device which is coupled to the sensor arrangement and which senses a change in the capacitance of the sensor arrangement with respect to a reference potential. A user can use a part of his body, for example his foot, to make a gesture in the sensing range of the sensors for activating a tailgate. At least two sensor electrode arrangements are arranged at spatially offset positions on the motor vehicle. The sensor electrodes are embodied as elongate electrode arrangements and are arranged with the same spatial orientation. One of the sensor electrodes is longer than the other. The relatively long sensor electrode extends beyond the relatively short sensor electrode on both sides in the longitudinal direction.
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Citations
9 Claims
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1. A sensor arrangement for detecting movement gestures towards a motor vehicle, having a capacitive sensor arrangement and at least one control and evaluation device, which is coupled to the sensor arrangement and detects a change in the capacitance of the sensor arrangement with respect to a reference potential,
characterised in that at least two sensor electrode arrangements are arranged at spatially offset positions on the motor vehicle, wherein the sensor electrodes are formed as elongate electrode arrangements and are arranged with the same spatial orientation, wherein one of the sensor electrode arrangements is formed with a longer length than the other sensor electrode arrangement, and the longer sensor electrode arrangement extends beyond the shorter sensor electrode arrangement on both sides in the longitudinal direction, wherein at least one of the sensor electrode arrangements is formed as a capacitively detecting first sensor electrode arrangement which is segmented in sections, wherein the segments are arranged in the longitudinal direction and allow different capacitive detection section by section.
Specification