| CPC G06F 3/0393 (2019.05) [B60K 37/06 (2013.01); G06F 3/016 (2013.01); G06F 3/0362 (2013.01); G06F 3/0446 (2019.05); B60K 2370/143 (2019.05); B60K 2370/158 (2019.05)] | 10 Claims |
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1. An input device, comprising:
a capacitive detection device comprising a detection surface, the detection surface having a first array of array electrodes formed thereon;
an electronic evaluator connected to the array electrodes, the electronic evaluator forming, by means of the first array of array electrodes, an associated measurement field array for spatially resolving detection of a capacitive influence on the detection surface;
a handle mounted on the detection surface, the handle being movable along an adjustment path parallel to the detection surface, to perform an operating input by means of a manually effected movement as provided by an operator in a movement direction;
a position indicator configured to move along with the handle; and
a coupling device disposed on the detection surface and including a first surface which faces the detection surface and on which a second array of coupling electrodes for capacitive coupling with the array electrodes is formed, the coupling device including a second surface which faces the position indicator and away from the detection surface and on which a third array is formed, the third array including contact surfaces that are spaced apart, wherein the contact surfaces are arranged along one or more tracks parallel to the adjustment path such that the contact surfaces are, selectively and dependent on a position of the handle along the adjustment path, touch-contacted by the position indicator,
wherein the coupling device includes plural electrically conductive connections, a number of the plural electrically conductive connections being greater than or equal to a number of the contact surfaces, each of the plural electrically conductive connections being configured to connect one of the coupling electrodes with one contact surface in order to capacitively influence at least one measurement field of the measurement field array when touch-contacting with the position indicator,
wherein the electronic evaluator is configured to detect a position-dependent influence on the measuring field array in order to obtain and to output at least one of position information or movement information of the handle,
wherein the coupling device has at least one substrate with an electrically insulating material and the conductive connections are each formed, at least in some portions, as a conductor track provided by a conductive coating of the at least one substrate, and at least two connections differ with respect to a length of their conductor tracks,
wherein the first array of array electrodes comprises a regular grid structure with a smallest periodicity corresponding to a smallest distance between most closely-adjacent nodes, and
wherein the coupling device is fixedly placed on the detection surface such that geometric center points for each of the coupling electrodes is situated opposite a node, and such that the at least two connections differ with respect to the length of their conductor tracks by at least the smallest periodicity.
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