Position detection device
First Claim
1. A position detection device comprising:
- first and second electrode pairs,an electrically conductive body (10) that forms an electrical resistor which is electrically connected to electrodes (17, 18, 19, 20) of the first and the second electrode pairs and which extends in a first direction (y), between the electrodes (17, 18) of the first electrode pair, and in a second direction (x), between the electrodes (19, 20) of the second electrode pair, anda measurement electrode (11) being in electrically conductive contact with a surface (12) of a measurement area (23) of the body (10) located between the electrodes (17, 18, 19, 20) of the first and the second electrode pairs and being movable in relation to the first and the second electrode pairs,at least one voltmeter (24) being electrically connected to the measurement electrode (11), which voltmeter also being electrically connectable to at least one of a first electrode (18) of the first electrode pair and a first electrode (20) of the second electrode pair, for measuring an electric voltage between the first electrode (18;
20) concerned and the measurement electrode (11).
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Accused Products
Abstract
A position detection device having a first electrode pair, an electrically conductive body that forms an electrical resistor which is electrically connected to the electrodes of the first electrode pair and extends in a first direction (y), between them, and with a measurement electrode which is in electrically conductive contact with the surface of a measurement area of the body located between the electrodes of the first electrode pair and can move relative thereto. The body is electrically connected to the electrodes of a second electrode pair and extends between them in a second direction (x) such that the measurement area is located between the electrodes of the second electrode pair.
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Citations
14 Claims
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1. A position detection device comprising:
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first and second electrode pairs, an electrically conductive body (10) that forms an electrical resistor which is electrically connected to electrodes (17, 18, 19, 20) of the first and the second electrode pairs and which extends in a first direction (y), between the electrodes (17, 18) of the first electrode pair, and in a second direction (x), between the electrodes (19, 20) of the second electrode pair, and a measurement electrode (11) being in electrically conductive contact with a surface (12) of a measurement area (23) of the body (10) located between the electrodes (17, 18, 19, 20) of the first and the second electrode pairs and being movable in relation to the first and the second electrode pairs, at least one voltmeter (24) being electrically connected to the measurement electrode (11), which voltmeter also being electrically connectable to at least one of a first electrode (18) of the first electrode pair and a first electrode (20) of the second electrode pair, for measuring an electric voltage between the first electrode (18;
20) concerned and the measurement electrode (11). - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method of detecting a position with a position detection device having first and second electrode pairs, an electrically conductive body (10) that is electrically connected to electrodes (17, 18, 19, 20) of the first and the second electrode pairs and extends in a first direction (y), between the electrodes (17, 18) of the first electrode pair, and in a second direction (x), between the electrodes (19, 20) of the second electrode pair, a measurement electrode (11) which is in electrically conductive contact with a surface (12) of a measurement area (23) of the body (10) located between the electrodes (17, 18, 19, 20) of the first and the second electrode pairs and is movable in relation to the electrodes (17, 18, 19, 20) of the first and the second electrode pairs, at least one voltmeter (24) is electrically connected to the measurement electrode (11), the at least one voltmeter is electrically connectable to at least one of a first electrode (18) of the first electrode pair and a first electrode (20) of the second electrode pair so as to measure electric voltage between the measurement electrode (11) and the first electrode (18;
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20) of either the first or the second electrode pair, the method comprising the steps of;
applying an electric operating voltage (UB) to the electrodes (17, 18) of the first electrode pair; measuring a first electric voltage between the measurement electrode (11) and the first of the electrodes (18) of the first electrode pair; applying an electric operating voltage (UB) to the electrodes (19, 20) of the second electrode pair; measuring a second electric voltage between the measurement electrode (11) and a first of the electrodes (20) of the second electrode pair; and calculating a position (P1, P2, P3) of the measurement electrode (11) on the surface (12) of the measurement area (23) from the measured first and the second voltages. - View Dependent Claims (12, 13, 14)
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20) of either the first or the second electrode pair, the method comprising the steps of;
Specification