ZA872786B - Process for compensating for the temperature in a measurement by a magnetic censor - Google Patents

Process for compensating for the temperature in a measurement by a magnetic censor

Info

Publication number
ZA872786B
ZA872786B ZA872786A ZA872786A ZA872786B ZA 872786 B ZA872786 B ZA 872786B ZA 872786 A ZA872786 A ZA 872786A ZA 872786 A ZA872786 A ZA 872786A ZA 872786 B ZA872786 B ZA 872786B
Authority
ZA
South Africa
Prior art keywords
sensor
magnetic field
magnetic
generator
temperature
Prior art date
Application number
ZA872786A
Inventor
Jean-Marie Badoz
Original Assignee
Schrader Sa
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 Schrader Sa filed Critical Schrader Sa
Publication of ZA872786B publication Critical patent/ZA872786B/en

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
    • G01D5/142—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 using Hall-effect devices
    • G01D5/145—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 using Hall-effect devices influenced by the relative movement between the Hall device and magnetic fields
    • 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
    • G01D3/00—Indicating or recording apparatus with provision for the special purposes referred to in the subgroups
    • G01D3/028—Indicating or recording apparatus with provision for the special purposes referred to in the subgroups mitigating undesired influences, e.g. temperature, pressure
    • G01D3/032—Indicating or recording apparatus with provision for the special purposes referred to in the subgroups mitigating undesired influences, e.g. temperature, pressure affecting incoming signal, e.g. by averaging; gating undesired signals

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measuring Magnetic Variables (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)
  • Measuring Temperature Or Quantity Of Heat (AREA)

Abstract

The method provides for the temperature compensation of the measure taken by a magnetic sensor influenced by a magnetic field which passes cyclically in front of the sensor. It comprises the calculation of the ratio two by two and consecutively of signals delivered by the sensor, respectively when it is subjected to the field to be measured and by this same sensor when it is subjected to a reference magnetic field, said ratio reflecting the measure independently from temperature variations. The magnetic sensor may be a magnetoresistive sensor and the generator for generating the reference magnetic field may be a permanent magnet. Preferably, the sensor passes in front of the generator which generates the magnetic field to be measured and behind the generator which generates the reference magnetic field, or vice versa, so as to invert alternatingly the polarities of the signals delivered by said sensor.
ZA872786A 1986-04-21 1987-04-21 Process for compensating for the temperature in a measurement by a magnetic censor ZA872786B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8605915A FR2597592A1 (en) 1986-04-21 1986-04-21 METHOD FOR COMPENSATING THE TEMPERATURE OF THE MEASUREMENT CARRIED OUT BY A MAGNETIC SENSOR

Publications (1)

Publication Number Publication Date
ZA872786B true ZA872786B (en) 1987-11-25

Family

ID=9334558

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA872786A ZA872786B (en) 1986-04-21 1987-04-21 Process for compensating for the temperature in a measurement by a magnetic censor

Country Status (9)

Country Link
EP (1) EP0303609B1 (en)
JP (1) JPH01502294A (en)
AT (1) ATE60129T1 (en)
BR (1) BR8707678A (en)
DE (1) DE3767489D1 (en)
ES (1) ES2003309A6 (en)
FR (1) FR2597592A1 (en)
WO (1) WO1987006688A1 (en)
ZA (1) ZA872786B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0676621B1 (en) * 1994-03-25 1997-12-29 Dr. Johannes Heidenhain GmbH Magnetic position measuring system
US9841485B2 (en) * 2014-11-14 2017-12-12 Allegro Microsystems, Llc Magnetic field sensor having calibration circuitry and techniques

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1287805B (en) * 1969-01-23
GB1297363A (en) * 1970-04-06 1972-11-22

Also Published As

Publication number Publication date
JPH01502294A (en) 1989-08-10
FR2597592A1 (en) 1987-10-23
DE3767489D1 (en) 1991-02-21
BR8707678A (en) 1989-08-15
ES2003309A6 (en) 1988-10-16
WO1987006688A1 (en) 1987-11-05
EP0303609A1 (en) 1989-02-22
ATE60129T1 (en) 1991-02-15
EP0303609B1 (en) 1991-01-16

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