Device and method for detecting the number of revolutions of a rotatable shaft
AssigneeRobert Bosch GmbH
InventorsAxel Kaschner, Holger Behrens
Life of this patent
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Abstract
An apparatus for detecting a number of revolutions of a rotatable shaft, is proposed, which apparatus encompasses a magnet disposed on the shaft, and a micromechanical device. A detection element of the micromechanical device, which element interacts with the magnet, is advanced stepwise upon each movement of the magnet past the micromechanical device in accordance with the movement direction of the magnet.
Claims14
An apparatus for detecting a number of revolutions of a rotatable shaft, comprising:
- a magnet disposed on the shaft;
- and
- a micromechanical device including a detection element that magnetically interacts with the magnet and is movable stepwise by the magnetic interaction upon each movement of the magnet past the micromechanical device in accordance with a movement direction of the magnet.
A method for detecting a number of revolutions of a rotatable shaft by way of a detection apparatus, comprising:
- moving a magnet, disposed on the shaft, past a micromechanical device so that the magnet magnetically interacts, upon each movement of the magnet past the device, with a detection element of the micromechanical device in such a way that the detection element is moved stepwise by the magnetic interaction in accordance with a movement direction of the magnet.
A method of using an apparatus as a revolution counter for a steering angle datum of a motor vehicle, the apparatus being for detecting a number of revolutions of a rotatable shaft, and comprising:
- a magnet disposed on the shaft;
- and
- a micromechanical device including a detection element that magnetically interacts with the magnet and is movable stepwise by the magnetic interaction upon each movement of the magnet past the micromechanical device in accordance with a movement direction of the magnet.
Dependencies are inferred from the claim text.