Title:
磁気抵抗素子を利用したセンサ
Document Type and Number:
Japanese Patent JP3529784
Kind Code:
B2
Abstract:
A proximity sensor has two magnetoresistive elements in a common plane and displaced from a lateral surface of a permanent magnet. The common sensing plane of the magnetoresistive elements extends in a direction generally parallel to a magnetic axis of a permanent magnet that extends between the north and south poles of the magnet. A detection zone is defined relative to a preselected magnetic pole face and the magnetoresistive elements provide first and second signals that can be compared to define a third signal which is representative of the presence or absence of the magnetically permeable object within the detection zone. The magnetoresistive elements can each have a plurality of magnetoresistors which are arranged in a Wheatstone bridge configuration for the purpose of providing the first and second signals described above.
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Inventors:
ウー，ミェン・ティ
Application Number:
JP51870795A
Publication Date:
May 24, 2004
Filing Date:
January 11, 1995
Export Citation:
Assignee:
ハネウエル・インコーポレーテッド
International Classes:
G01B7/30; G01B7/00; G01R33/09; G01V3/08; (IPC1-7): G01V3/08; G01B7/30; G01R33/09
Attorney, Agent or Firm:
山川 政樹 （外５名）