Electronic magnetic position sensor using a magnetic path linking an energizing coil and two detectors
First Claim
1. A magnetic position sensor comprising:
- at least one energizing coil;
at least two magnetism detecting elements;
a magnetic path forming means for allowing a magnetic flux interlinking with said energizing coil to pass through said magnetism detecting elements said magnetic path forming means providing a magnetic reluctance corresponding to a current position of a movable member to be detected;
energizing means for energizing said energizing coil; and
a position signal generating means for generating a position signal indicating a current position of said movable member in accordance with the respective output signals issued from said magnetism detecting element, wherein said position signal generating means produces said position signal which is based on a ratio between an added value of said output signals and one of said output signals.
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Abstract
A magnetic sensor comprising at least one energizing coil (5), at least two magnetism detection elements (6a, 6b), a magnetic path forming means interlinking with the energizing coil and making a magnetic flux having passed through the magnetism detection elements (6a, 6b) pass therethrough and having a magnetic reluctance corresponding to a variable position of a movable member to be detected, and a position signal generating means for generating a position signal on the basis of output signals from said magnetism detection elements. This magnetic sensor preferably includes determining means (15) for producing an enable signal when an instantaneous signal of an output signal (c) generated from at least one of the magnetism detection elements or an instantaneous value of an energizing current flowing in the energizing coil (5) is higher than a specified level.
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Citations
19 Claims
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1. A magnetic position sensor comprising:
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at least one energizing coil; at least two magnetism detecting elements; a magnetic path forming means for allowing a magnetic flux interlinking with said energizing coil to pass through said magnetism detecting elements said magnetic path forming means providing a magnetic reluctance corresponding to a current position of a movable member to be detected; energizing means for energizing said energizing coil; and a position signal generating means for generating a position signal indicating a current position of said movable member in accordance with the respective output signals issued from said magnetism detecting element, wherein said position signal generating means produces said position signal which is based on a ratio between an added value of said output signals and one of said output signals. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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Specification