JPS57165713A - Detector for rotary angle - Google Patents

Detector for rotary angle

Info

Publication number
JPS57165713A
JPS57165713A JP5105481A JP5105481A JPS57165713A JP S57165713 A JPS57165713 A JP S57165713A JP 5105481 A JP5105481 A JP 5105481A JP 5105481 A JP5105481 A JP 5105481A JP S57165713 A JPS57165713 A JP S57165713A
Authority
JP
Japan
Prior art keywords
magnet
opposite
column
sensor
magnetic sensor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP5105481A
Other languages
Japanese (ja)
Inventor
Kiyoshi Nagasawa
Toshio Nonaka
Hiroaki Shoji
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Construction Machinery Co Ltd
Original Assignee
Hitachi Construction Machinery Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hitachi Construction Machinery Co Ltd filed Critical Hitachi Construction Machinery Co Ltd
Priority to JP5105481A priority Critical patent/JPS57165713A/en
Publication of JPS57165713A publication Critical patent/JPS57165713A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
    • G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
    • G01D5/14—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage
    • G01D5/20—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying inductance, e.g. by a movable armature
    • G01D5/2006—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying inductance, e.g. by a movable armature by influencing the self-induction of one or more coils
    • G01D5/2033—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying inductance, e.g. by a movable armature by influencing the self-induction of one or more coils controlling the saturation of a magnetic circuit by means of a movable element, e.g. a magnet

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)

Abstract

PURPOSE:To reduce the number of magnetic sensors, by a method wherein a device is constituted such that a magnet, which is increased in an area, positioned facing and opposite to a magnetic sensor, corresponding to a change in an angle, and the magnetic sensor, positioned facing and opposite to the magnet, are located at a given distance, and with this either of them spins centering around a turning center. CONSTITUTION:A magnet 11, shown in an oblique line, is installed on a peripheral surface of a column 9 which is supported so that it can spin centering around a turning center 10, and a sensor 12 is positioned at a distance l away from and facing and opposite to the magnet 11. When an object to be detected turns, the column 9 spins in synchronism with the object, but the magnet 11 is increased in an area, positioned facing and opposite to the sensor, in proportion to a change in an angle theta. This permits the detection of the angle theta without the need to adjust the column 9 to a reference position through the output voltage of the magnetic sensor 12 before measuring.
JP5105481A 1981-04-07 1981-04-07 Detector for rotary angle Pending JPS57165713A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5105481A JPS57165713A (en) 1981-04-07 1981-04-07 Detector for rotary angle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5105481A JPS57165713A (en) 1981-04-07 1981-04-07 Detector for rotary angle

Publications (1)

Publication Number Publication Date
JPS57165713A true JPS57165713A (en) 1982-10-12

Family

ID=12876085

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5105481A Pending JPS57165713A (en) 1981-04-07 1981-04-07 Detector for rotary angle

Country Status (1)

Country Link
JP (1) JPS57165713A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01276016A (en) * 1988-04-28 1989-11-06 Komatsu Ltd Absolute type encoder
JPH0835854A (en) * 1991-01-22 1996-02-06 Toyota Motor Corp Method for detecting displacement of moving member
JP2006113039A (en) * 2004-09-15 2006-04-27 Tokai Rika Co Ltd Magnetism detection device
JP2008241370A (en) * 2007-03-26 2008-10-09 Tdk Corp Magnet structure and position detector using the same
JP2010256122A (en) * 2009-04-23 2010-11-11 Kayaba Ind Co Ltd Stroke sensor of cylinder

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01276016A (en) * 1988-04-28 1989-11-06 Komatsu Ltd Absolute type encoder
JPH0835854A (en) * 1991-01-22 1996-02-06 Toyota Motor Corp Method for detecting displacement of moving member
JP2006113039A (en) * 2004-09-15 2006-04-27 Tokai Rika Co Ltd Magnetism detection device
JP2008241370A (en) * 2007-03-26 2008-10-09 Tdk Corp Magnet structure and position detector using the same
JP2010256122A (en) * 2009-04-23 2010-11-11 Kayaba Ind Co Ltd Stroke sensor of cylinder

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