GB872887A - Improvements in and relating to transducers - Google Patents

Improvements in and relating to transducers

Info

Publication number
GB872887A
GB872887A GB2609757A GB2609757A GB872887A GB 872887 A GB872887 A GB 872887A GB 2609757 A GB2609757 A GB 2609757A GB 2609757 A GB2609757 A GB 2609757A GB 872887 A GB872887 A GB 872887A
Authority
GB
United Kingdom
Prior art keywords
gap
armature
magneto
hall
aug
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
GB2609757A
Inventor
George Victor Planer
Robert William Windebank
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.)
Cosmocord Ltd
Original Assignee
Cosmocord 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 Cosmocord Ltd filed Critical Cosmocord Ltd
Priority to GB2609757A priority Critical patent/GB872887A/en
Priority to US755167A priority patent/US3061771A/en
Priority to FR1213516D priority patent/FR1213516A/en
Publication of GB872887A publication Critical patent/GB872887A/en
Expired 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
    • G01D5/142—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
    • G01D5/147—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 movement of a third element, the position of Hall device and the source of magnetic field being fixed in respect to each other
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L1/00—Measuring force or stress, in general
    • G01L1/12—Measuring force or stress, in general by measuring variations in the magnetic properties of materials resulting from the application of stress
    • G01L1/122—Measuring force or stress, in general by measuring variations in the magnetic properties of materials resulting from the application of stress by using permanent magnets
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P15/00—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration
    • G01P15/02—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses
    • G01P15/08—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses with conversion into electric or magnetic values
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R23/00—Transducers other than those covered by groups H04R9/00 - H04R21/00

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Measuring Fluid Pressure (AREA)

Abstract

872,887. Transducers. COSMOCORD Ltd. Aug. 19, 1958 [Aug. 19, 1957], No. 26097/57. Class 40 (1). [Also in Group XXXIX] A transducer comprises an element displaying the Hall or magneto-resistive effect mounted stationary in the air gap of a magnetic structure, and means for shunting the magnetic field across the gap to an extent depending on the magnitude of the parameter to be measured. In Fig. 1 an element 5 (e.g. of indium antimonide) is mounted on an insulated support in the gap of a permanent magnet 1, the gap being preferably only just large enough to take the element, and the pole pieces being reduced in width to intensify the field across the gap. A shunt path is provided by an armature 8 mounted on a resilient diaphragm 7 to which motion is transmitted from the stylus 16, damped by a friction pad 13. Movement of the stylus alters the flux through the element and an output can be obtained by the Hall or magneto-resistive effect. In an alternative form (not shown) the armature 8 lies over a further set of pole pieces arranged in zig-zag form to provide a long air gap. Also, the armature can be pivoted at its centre and have a differential action on two transducer elements. The armature can penetrate the shunt gap instead of lying adjacent to it. Temperature effects can be avoided by connecting two transducer elements as adjacent arms of a bridge circuit. The device can be used as a strain gauge, thickness gauge, accelerometer or pressure-sensitive device. The armature 8 can be omitted if the whole diaphragm is of resilient magnetic material. The element 5 can be one of those disclosed in Specification 872,886, but preferably has annular electrodes in the manner of a corbino disc.
GB2609757A 1957-08-19 1957-08-19 Improvements in and relating to transducers Expired GB872887A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB2609757A GB872887A (en) 1957-08-19 1957-08-19 Improvements in and relating to transducers
US755167A US3061771A (en) 1957-08-19 1958-08-15 Transducers
FR1213516D FR1213516A (en) 1957-08-19 1958-08-19 Improvements to transducers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2609757A GB872887A (en) 1957-08-19 1957-08-19 Improvements in and relating to transducers

Publications (1)

Publication Number Publication Date
GB872887A true GB872887A (en) 1961-07-12

Family

ID=10238325

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2609757A Expired GB872887A (en) 1957-08-19 1957-08-19 Improvements in and relating to transducers

Country Status (2)

Country Link
FR (1) FR1213516A (en)
GB (1) GB872887A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2829425A1 (en) * 1978-07-05 1980-01-17 Deutsche Forsch Luft Raumfahrt METHOD AND DEVICE FOR MEASURING ACCELERATIONS ON VIBRATING BODIES
WO2018136988A1 (en) * 2017-01-27 2018-08-02 Hirtenberger Engineered Surfaces Gmbh Magnetic force sensor and production thereof

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2829425A1 (en) * 1978-07-05 1980-01-17 Deutsche Forsch Luft Raumfahrt METHOD AND DEVICE FOR MEASURING ACCELERATIONS ON VIBRATING BODIES
WO2018136988A1 (en) * 2017-01-27 2018-08-02 Hirtenberger Engineered Surfaces Gmbh Magnetic force sensor and production thereof
US11060925B2 (en) 2017-01-27 2021-07-13 Hirtenberger Engineered Surfaces Gmbh Magnetic force sensor and production thereof

Also Published As

Publication number Publication date
FR1213516A (en) 1960-04-01

Similar Documents

Publication Publication Date Title
GB1380928A (en) Electromagnetic transducer
GB1251614A (en)
GB930366A (en) Stereophonic pick-up having a single stylus
GB1060700A (en) Improvements in thickness measuring gauge
GB843399A (en) Improvements in electro-mechanical transducers
US3061771A (en) Transducers
GB872887A (en) Improvements in and relating to transducers
GB925048A (en) Improvements in or relating to transducers using piezosensitive material
GB944507A (en) Condition responsive apparatus
GB1501025A (en) Electromagnetically compensated balance or dynamometer device
GB801966A (en) Electric transducer
GB806305A (en) Improvements in transducing devices
GB1348615A (en) Force or travel measuring apparatus
GB852233A (en) Supporting means for a mechanical force measuring device
GB1324459A (en) Magnetic thickness gauges
GB1281004A (en) Transducers
US2735984A (en) Shepherd
GB828030A (en) Transducer for measuring pressure or differential pressure
GB1063639A (en) Improvements in or relating to a method and device for measuring forces by application of the hall effect
GB643518A (en) Improvements in or relating to transducers
GB907240A (en) Vibrating string transducer devices and systems for employing the same
GB599601A (en) Improvements relating to means for measuring the thickness of non-magnetic coatings on magnetic bases
GB1220413A (en) Improvements in and relating to gas analyzers
JPS53101411A (en) Mr type magnetic head
SU723468A1 (en) Astatic magnetometer