Very high resolution speed and position sensor
AssigneeContinental Automotive Systems, Inc.
InventorGaetan Vich
Life of this patent
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Abstract
A very high resolution sensor for detecting an angular rotation of a rotating target, the sensor including a first pair of Hall effect sensors and a second pair of Hall effect sensors. A first magnetic flux density differential of the rotating target is generated from the first pair of Hall effect sensors and a second magnetic flux density differential of the rotating target is generated from the second pair of Hall effect sensors. A pulse corresponding to an amount of angular rotation of the rotating target is output based on the second magnetic flux density differential reaching the first magnetic flux density differential.
Claims18
A very high resolution sensor comprising:
- a first pair of sensors configured to detect a first magnetic flux density differential of a rotating target;
- a second pair of sensors configured to detect a second magnetic flux density differential of the rotating target;
- and
- a controller configured to determine that a second value of the second magnetic flux density differential of the rotating target reaches a first value of the first magnetic flux density differential of the rotating target and output a pulse corresponding to a degree of rotation of the rotating target.
A method of detecting an angular rotation of a rotating target, the method comprising:
- detecting, by a first pair of sensors, a first magnetic flux density of a rotating target;
- detecting, by a second pair of sensors, a second magnetic flux density of the rotating target;
- determining that a second value of the second magnetic flux density differential of the rotating target reaches a first value of the first magnetic flux density differential of the rotating target;
- and
- outputting a pulse corresponding to a degree of rotation of the rotating target.
Dependencies are inferred from the claim text.