Capacitive angle sensor
First Claim
1. A capacitive angle sensor comprising a rotor fixedly connected for rotation with a sensor shaft and a stator fixed to a sensor housing, the rotor and the stator respectively including electrode structures thereon which are for being capacitively coupled with the other, the rotor and stator extending in parallel planes and sharing a common plane with respect to each other, wherein at least one of the rotor (4) and the stator (3) is structured to include a ceramic plate having the electrode structure (5, 6, 7) on its side facing away from the other of the rotor and the stator, with the ceramic plate forming a dielectric layer between the electrode structures of the rotor and the stator.
1 Assignment
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Accused Products
Abstract
A capacitive angle sensor that is used preferably in motor vehicles includes a sensor housing (2) having a cover (2′) covering the sensor housing (2). A stator (3) and a rotor (4) are positioned in the sensor housing (2), each respectively including a ceramic plate and lying in a plane parallel to the other. The ceramic plates are preferably of an Al2O3 ceramic. Printed electrode structures of electrodes (5, 6), as sensor capacitances and coupling capacitances (7), are located on sides of the stator (3) and of the rotor (4) facing respectively outward. The electrode structures are printed on back sides of the ceramic plates, so that the electrodes (5, 6, 7), upon assembly into the angle sensor (1), are located on the sides of the stator (3) and of the rotor (4) that face respectively away from each.
28 Citations
9 Claims
- 1. A capacitive angle sensor comprising a rotor fixedly connected for rotation with a sensor shaft and a stator fixed to a sensor housing, the rotor and the stator respectively including electrode structures thereon which are for being capacitively coupled with the other, the rotor and stator extending in parallel planes and sharing a common plane with respect to each other, wherein at least one of the rotor (4) and the stator (3) is structured to include a ceramic plate having the electrode structure (5, 6, 7) on its side facing away from the other of the rotor and the stator, with the ceramic plate forming a dielectric layer between the electrode structures of the rotor and the stator.
Specification