AMR SPEED AND DIRECTION SENSOR FOR USE WITH MAGNETIC TARGETS
A movement sensor comprises a multi-pole ring magnet, a semiconductor substrate, a first magnetic sensor formed on the semiconductor substrate, and a second magnetic sensor formed on the semiconductor substrate. The first magnetic sensor is configured to produce a first output signal in response to...
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| creator | STOLFUS, Joel CHILCOTE, Jason ZHANG, Junheng BUSSAN, Anthony J |
| description | A movement sensor comprises a multi-pole ring magnet, a semiconductor substrate, a first magnetic sensor formed on the semiconductor substrate, and a second magnetic sensor formed on the semiconductor substrate. The first magnetic sensor is configured to produce a first output signal in response to movement of the multi-pole ring magnet, and a centroid, i.e. a center of mass of magnetoresistive elements forming the magnetic sensor, of the first magnetic sensor and a centroid of the second magnetic sensor are separate and radially aligned on the semiconductor substrate relative to the multi-pole ring magnet. The second magnetic sensor is arranged at a predetermined angle with respect to the first magnetic sensor and is configured to produce a second output signal in response to the movement of the multi-pole ring magnet. The predetermined angle is between 0° and 90° exclusive, e.g. 45 degrees, and the predetermined angle is configured to produce a difference in phase between the first and second output signals in response to the movement of the multi-pole ring magnet. |
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The first magnetic sensor is configured to produce a first output signal in response to movement of the multi-pole ring magnet, and a centroid, i.e. a center of mass of magnetoresistive elements forming the magnetic sensor, of the first magnetic sensor and a centroid of the second magnetic sensor are separate and radially aligned on the semiconductor substrate relative to the multi-pole ring magnet. The second magnetic sensor is arranged at a predetermined angle with respect to the first magnetic sensor and is configured to produce a second output signal in response to the movement of the multi-pole ring magnet. 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| language | eng ; fre ; ger |
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| subjects | ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVEREDIN A SINGLE OTHER SUBCLASS INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT MEASURING MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION,OR SHOCK MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR PHYSICS TARIFF METERING APPARATUS TESTING |
| title | AMR SPEED AND DIRECTION SENSOR FOR USE WITH MAGNETIC TARGETS |
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