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GB1416925A - Magnetic-field-sensing apparatus - Google Patents

Magnetic-field-sensing apparatus

Info

Publication number
GB1416925A
GB1416925A GB3966873A GB3966873A GB1416925A GB 1416925 A GB1416925 A GB 1416925A GB 3966873 A GB3966873 A GB 3966873A GB 3966873 A GB3966873 A GB 3966873A GB 1416925 A GB1416925 A GB 1416925A
Authority
GB
United Kingdom
Prior art keywords
flux
magnetic
disc
bridge
output
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.)
Expired
Application number
GB3966873A
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.)
Siemens Corp
Original Assignee
Siemens Corp
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
Priority claimed from DE19722241072 external-priority patent/DE2241072C3/en
Application filed by Siemens Corp filed Critical Siemens Corp
Publication of GB1416925A publication Critical patent/GB1416925A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
    • G01P3/42—Devices characterised by the use of electric or magnetic means
    • G01P3/44—Devices characterised by the use of electric or magnetic means for measuring angular speed
    • G01P3/48—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage
    • G01P3/481—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage of pulse signals
    • G01P3/487—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage of pulse signals delivered by rotating magnets

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
  • Measuring Volume Flow (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)
  • Adjustable Resistors (AREA)

Abstract

1416925 Magnetic position indicators SIEMENS A G 21 Aug 1973 [21 Aug 1972] 39668/73 Addition to 1329627 Heading G1N An apparatus for use in a potentiometer or electronic position indicating apparatus of the type which includes two magnetic field sensing parts as described in Specification 1329627 includes a rotatable magnet flux generator arranged symmetrically with respect to the two parts so that as it rotates an output signal is provided which varies with the relative rotation of the flux generator and sensing parts. Each sensing part includes permanent magnets 4, 6, pole pieces 8, 12 and 10, 14 and magnetic resistive members 20, 22 forming symmetrical biasing flux paths 30, 32, gap 38 being filled with diamagnetic material. Permanent magnet disc 24 magnetized diametrically along an axis mutually perpendicular to the magnetization axis of magnets 4, 6 is mounted on shaft 26 which may be the output shaft of a planetary reduction gear. The two magneto-resistive members 20, 22 are connected in adjacent arms of a constant D.C. energized resistance bridge, Fig. 2 (not shown). In the position of the disc 24 shown the magnetic flux 36 of the disc adds to that passing through member 20 and subtracts from that passing through 22 causing an output from the bridge. As the disc rotates the overall flux in 20 reduces and that in 22 increases until no flux 36 passes through members 20, 22. Further rotation causes the overall flux in one member to increase and in the other to decrease whereby a sinusoidal output voltage is obtained from the bridge circuit.
GB3966873A 1972-08-21 1973-08-21 Magnetic-field-sensing apparatus Expired GB1416925A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19722241072 DE2241072C3 (en) 1972-08-21 Magnetic field-dependent resistor arrangement for detecting the size and direction of an external magnetic control field

Publications (1)

Publication Number Publication Date
GB1416925A true GB1416925A (en) 1975-12-10

Family

ID=5854126

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3966873A Expired GB1416925A (en) 1972-08-21 1973-08-21 Magnetic-field-sensing apparatus

Country Status (3)

Country Link
FR (1) FR2197214A2 (en)
GB (1) GB1416925A (en)
IT (1) IT1046832B (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2169085A (en) * 1984-12-19 1986-07-02 Risto Tanner Direction indicating apparatus
US4893502A (en) * 1987-08-03 1990-01-16 Hitachi, Ltd. Angle sensor for throttle valve of internal combustion engine
US5332965A (en) * 1992-06-22 1994-07-26 Durakool Incorporated Contactless linear angular position sensor having an adjustable flux concentrator for sensitivity adjustment and temperature compensation
US5497081A (en) * 1992-06-22 1996-03-05 Durakool Incorporated Mechanically adjustable linear-output angular position sensor
US5757181A (en) * 1992-06-22 1998-05-26 Durakool Incorporated Electronic circuit for automatically compensating for errors in a sensor with an analog output signal
US6198275B1 (en) 1995-06-07 2001-03-06 American Electronic Components Electronic circuit for automatic DC offset compensation for a linear displacement sensor

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2169085A (en) * 1984-12-19 1986-07-02 Risto Tanner Direction indicating apparatus
US4893502A (en) * 1987-08-03 1990-01-16 Hitachi, Ltd. Angle sensor for throttle valve of internal combustion engine
GB2208549B (en) * 1987-08-03 1991-10-02 Hitachi Ltd Angle sensor for throttle valve of internal combustion engine
US5332965A (en) * 1992-06-22 1994-07-26 Durakool Incorporated Contactless linear angular position sensor having an adjustable flux concentrator for sensitivity adjustment and temperature compensation
US5497081A (en) * 1992-06-22 1996-03-05 Durakool Incorporated Mechanically adjustable linear-output angular position sensor
US5757181A (en) * 1992-06-22 1998-05-26 Durakool Incorporated Electronic circuit for automatically compensating for errors in a sensor with an analog output signal
US6340884B1 (en) 1992-06-22 2002-01-22 American Electronic Components Electric circuit for automatic slope compensation for a linear displacement sensor
US6198275B1 (en) 1995-06-07 2001-03-06 American Electronic Components Electronic circuit for automatic DC offset compensation for a linear displacement sensor

Also Published As

Publication number Publication date
DE2241072A1 (en) 1974-03-14
DE2241072B2 (en) 1975-08-21
FR2197214A2 (en) 1974-03-22
IT1046832B (en) 1980-07-31

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee