Displacement transducer专利检索-磁阻效应电磁学专利检索查询-专利查询网

Displacement transducer

阅读：330发布：2023-02-17

专利汇可以提供Displacement transducer专利检索，专利查询，专利分析的服务。并且A displacement transducer is comprised of an magnetoresistive element, or an elongated semiconductor member having the magnetoresistive effect. A pair of electrodes are affixed at both ends of this magnetoresistive element, and a third electrode at the center. While an electric current is made to flow therethrough from each of the pair of electrodes to the third electrode, an applied magnetic field is moved thereon toward either side of the third electrode to obtain an output voltage due to the magnetoresistive effect of the element. In another embodiment of the invention, wherein a plurality of metal boundaries are formed at intervals between a pair of electrodes at both ends of an magnetoresistive element, a leading end of an applied magnetic field is inclined to such a degree as to extend between at least two adjoining ones of the metal boundaries.，下面是Displacement transducer专利的具体信息内容。

权利要求

1. A transducer for converting the relative displacement of a unidirectional magnetic field into an electrical signal comprising: two geometrically alike magnetoresistive portions; means for applying electrical energy to said magnetoresistive portions to effect current flow in opposite directions through both portions; means for applying a unidirectional magnetic field simultaneously to both said magnetresistive portions to vary the resistance thereof and coacting with said magnetoresistive portions to allow relative displacement between the unidirectional magnetic field and said magnetoresistive portions; and means connected to said magnetoresistive portions and responsive to the displacement of the unidirectional magnetic field relative thereto for developing an electrical signal having one polarity when the unidirectional magnetic field is displaced in one direction relative to said magnetoresistive portions from a given reference plane and having an opposite polarity when the unidirectional magnetic field is displaced in an opposite directionrelative to said magnetoresistive portions from said reference plane and having a magnitude proportional to the extent of displacement from said reference plane.

2. A transducer according to claim 1; wherein said two magnetoresistive portions comprise two portions of a single magnetoresistive element each disposed on opposite sides of said reference plane which extends through the geometrical center of said magnetoresistive element.

3. A transducer according to claim 2; wherein said means for applying electrical energy and said means for developing an electrical signal include a pair of end electrodes each attached to one end of said magnetoresistive element, and a center electrode attached to said magnetoresistive element at its geometrical center.

4. A transducer according to claim 2, wherein said two magnetoresistive portions comprise two distinct magnetoresistive elements disposed in parallel relationship and having said reference plane extending through the geometrical centers of both said magnetroresistive elements.

5. A transducer according to claim 4; wherein said means for applying electrical energy and said means for developing an electrical signal include four end electrodes attached respectively to the four ends of said two magnetoresistive elements, and two center electrodes attached respectively to the geometrical centers of said two magnetoresistive elements.

6. A transducer according to claim 4; wherein said two magnetoresistive elements extend linearly in the directions of relative displacement between same and said unidirectional magnetic field.

7. A transducer according to claim 4; wherein said two magnetoresistive elements extend curvilinearly along a circular arc in the direction of relative displacement between same and said unidirectional magnetic field.

8. A transducer according to claim 4; wherein said means for applying electrical energy comprises four end electrodes attached respectively to the four ends of said two magnetoresistive elements, conductors connected to said end electrodes electriCally connecting said two magnetoresistive elements in parallel, and means for applying a voltage across said four electrodes; and wherein said means for developing an output signal comprises a pair of center electrodes attached respectively to the geometrical centers of said two magnetoresistive elements developing thereacross said output signal during use of the transducer.

9. A transducer according to claim 8; wherein said two magnetoresistive elements extend linearly in the directions of relative displacement between same and said unidirectional magnetic field.

10. A transducer according to claim 8; wherein said two magnetoresistive elements extend curvilinearly along a circular arc in the direction of relative displacement between same and said unidirectional magnetic field.

说明书全文

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Displacement transducer

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