GB1496976A - Positional transducers utilizing magnetic means - Google Patents

Positional transducers utilizing magnetic means

Info

Publication number
GB1496976A
GB1496976A GB42946/75A GB4294675A GB1496976A GB 1496976 A GB1496976 A GB 1496976A GB 42946/75 A GB42946/75 A GB 42946/75A GB 4294675 A GB4294675 A GB 4294675A GB 1496976 A GB1496976 A GB 1496976A
Authority
GB
United Kingdom
Prior art keywords
tube
tubes
magnetic means
wire
sensing
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
GB42946/75A
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.)
Illinois Tool Works Inc
Original Assignee
Illinois Tool Works Inc
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 Illinois Tool Works Inc filed Critical Illinois Tool Works Inc
Publication of GB1496976A publication Critical patent/GB1496976A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F21/00—Variable inductances or transformers of the signal type
    • H01F21/02—Variable inductances or transformers of the signal type continuously variable, e.g. variometers
    • H01F21/08—Variable inductances or transformers of the signal type continuously variable, e.g. variometers by varying the permeability of the core, e.g. by varying magnetic bias
    • 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
    • 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
    • G01D5/22—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 differentially influencing two coils
    • G01D5/2208—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 differentially influencing two coils by influencing the self-induction of the coils
    • G01D5/2241—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 differentially influencing two coils by influencing the self-induction of the coils by controlling the saturation of a magnetic circuit by means of a movable element, e.g. a magnet
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F29/00—Variable transformers or inductances not covered by group H01F21/00
    • H01F29/14—Variable transformers or inductances not covered by group H01F21/00 with variable magnetic bias
    • H01F29/146—Constructional details

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)
  • Length Measuring Devices Characterised By Use Of Acoustic Means (AREA)

Abstract

1496976 Position sensing device ILLINOIS TOOL WORKS Inc 20 Oct 1975 [29 Oct 1974] 42946/75 Heading G1N A sensing device comprises a hollow, cylindrical magnetically saturable tube, magnetic means, e.g. two oppositely magnetized magnets 18, 20, so arranged with respect to the tube that the tube is divided into a first, magnetically saturated portion A and a second magnetically unsaturated portion B, the extent of the portions varying in accordance with the relative positions of the tube 16 and magnetic means, and a sensing wire 12 passing through the tube and preferably along or in a direction parallel to its axis for sensing the extent of the portions and hence the relative positions of the tube and magnetic means. The sensing wire may be used on its own in an oscillating circuit or as shown in combination with a diving wire 14, an A.C. excitation signal, in this case, being fed to the sensing wire. Alternatively two spaced co-axial magnetically saturable tubes may be used, the driving wire being tapped between the two tubes and the driving wires in the tubes being connected oppositely, Figs. 4 and 5 (not shown). In a similar embodiment to that last described, the tubes are both part circular and the sensing device is of circular configuration Fig. 6 (not shown).
GB42946/75A 1974-10-29 1975-10-20 Positional transducers utilizing magnetic means Expired GB1496976A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US51831074A 1974-10-29 1974-10-29

Publications (1)

Publication Number Publication Date
GB1496976A true GB1496976A (en) 1978-01-05

Family

ID=24063390

Family Applications (1)

Application Number Title Priority Date Filing Date
GB42946/75A Expired GB1496976A (en) 1974-10-29 1975-10-20 Positional transducers utilizing magnetic means

Country Status (12)

Country Link
JP (1) JPS5721641B2 (en)
BR (1) BR7506189A (en)
CA (1) CA1031054A (en)
DE (1) DE2546487A1 (en)
ES (1) ES442157A1 (en)
FR (1) FR2289879A1 (en)
GB (1) GB1496976A (en)
IT (1) IT1043689B (en)
NL (1) NL7510875A (en)
SE (1) SE409142B (en)
SU (1) SU585819A3 (en)
ZA (1) ZA755500B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2273568A (en) * 1992-12-18 1994-06-22 Univ Cardiff Position transducer
US8736255B2 (en) 2008-12-18 2014-05-27 Micro-Epsilon Messtechnik Gmbh & Co. Kg Sensor arrangement and method for determining the position and/or change in position of a measurement object

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4156223A (en) * 1978-04-21 1979-05-22 Illinois Tool Works Inc. Positional transducer utilizing magnetic elements

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2273568A (en) * 1992-12-18 1994-06-22 Univ Cardiff Position transducer
US8736255B2 (en) 2008-12-18 2014-05-27 Micro-Epsilon Messtechnik Gmbh & Co. Kg Sensor arrangement and method for determining the position and/or change in position of a measurement object

Also Published As

Publication number Publication date
AU8453275A (en) 1977-03-10
FR2289879A1 (en) 1976-05-28
DE2546487A1 (en) 1976-05-06
CA1031054A (en) 1978-05-09
SE409142B (en) 1979-07-30
IT1043689B (en) 1980-02-29
SU585819A3 (en) 1977-12-25
SE7512026L (en) 1976-04-30
NL7510875A (en) 1976-05-04
BR7506189A (en) 1976-08-17
ES442157A1 (en) 1977-07-01
JPS5721641B2 (en) 1982-05-08
ZA755500B (en) 1977-04-27
JPS5165964A (en) 1976-06-08

Similar Documents

Publication Publication Date Title
KR840002524A (en) Device for detecting metal body
GB1458296A (en)
KR850004010A (en) Resonant degaussing circuit without residual magnetism
GB2006433A (en) Ultrasonic Testing
GB1122763A (en) Inductive angular position transmitter
ES405523A1 (en) Inductor alternator
GB953036A (en) Improvements in or relating to a device for measuring the speed of a rotating shaft
GB1496976A (en) Positional transducers utilizing magnetic means
ES442772A1 (en) Positional transducer utilizing magnetic elements having improved operating characteristics
JPS53140513A (en) Motor
GB1177932A (en) Improvements in or relating to Fluid-Pressure Operated Piston and Cylinder Devices
JPS51123988A (en) Multi-head edge preparation device
SU563616A1 (en) Eddy current convertor
GB964824A (en) Improvements in and relating to magnetic devices
FR1241269A (en) Magnetic field generating device for electron beam tube
GB1109281A (en) Calibrating assembly for electric tachometers
SU569954A1 (en) Magnetic indicator of movement
GB1048144A (en) An electromagnetic transducer
SU498553A1 (en) Electromagnetic Speed Gauge
FR2378270A1 (en) Measurement of stress in ferromagnetic material - using electromagnetic collector, not in direct contact with material, with two prim. and two sec. windings
ES356399A1 (en) Head-electrode head for electroerosion mechanism. (Machine-translation by Google Translate, not legally binding)
GB1408911A (en) Velocity transducers
SU471536A1 (en) Inductive sensor for detecting the velocity of propagation of a shock wave front
SU402494A1 (en) SENSOR CONTROL SIGNALS PNEUMATIC
GB643518A (en) Improvements in or relating to transducers

Legal Events

Date Code Title Description
429A Application made for amendment of specification (sect. 29/1949)
429H Application (made) for amendment of specification now open to opposition (sect. 29/1949)
PS Patent sealed [section 19, patents act 1949]
SP Amendment (slips) printed
PCNP Patent ceased through non-payment of renewal fee