GB1199063A - Position Responsive Signal Generator - Google Patents

Position Responsive Signal Generator

Info

Publication number
GB1199063A
GB1199063A GB31508/67A GB3150867A GB1199063A GB 1199063 A GB1199063 A GB 1199063A GB 31508/67 A GB31508/67 A GB 31508/67A GB 3150867 A GB3150867 A GB 3150867A GB 1199063 A GB1199063 A GB 1199063A
Authority
GB
United Kingdom
Prior art keywords
coils
shields
conductive
oscillator
flux
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
GB31508/67A
Inventor
Joseph F Sghugt
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB1199063A publication Critical patent/GB1199063A/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
    • G01D5/20—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
    • G01D5/204—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 mutual induction between two or more coils
    • G01D5/2053—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 mutual induction between two or more coils by a movable non-ferromagnetic conductive element
    • 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

Abstract

1,199,063. Position encoders. J. F. SCHUGT. 7 July, 1967 [8 July, 1966], No. 31508/67. Heading G4H. [Also in Division G1] A transducer for measuring angular speed or position comprises a circular rotatable disc having elements 14 around its periphery which affect the coupling between coils 11, 12 wound on ferromagnetic cores 44, 51, the flux path between the coils being confined to increase the sensitivity of the transducer by surrounding each coil with a conductive shield except in narrow areas defining the flux path. Thus the coils are surrounded by shields 40, 41, 45, 53, 49, of which shields 40, 41 are made wholly of conductive material, e.g. aluminium, with gaps 42, 43 provided for the return flux. Shields 45, 53, 49 may also be made wholly of conductive material with gaps 50, 56 defining the flux path. Alternatively, they may be made of copper coated insulating material, e.g. fibre glass, with the conductive coating etched away to provide the necessary gaps. The slots in shields 40, 41 may be omitted, the cylindrical shields being increased in diameter to include the transverse shot between shields 49 and 53 within its circumference so that the return path of the flux lies inside the cylindrical shields. Insulating end plates 56, 60 are arranged at the remote ends of the coils, carrying terminals 57, 58, 61, 62 for the coils. The assembly is held in position by a potting compound and attached to a supporting conductive member 33, Fig. 3 (not shown). The rotating disc may be made of conductive material with conductive or ferromagnetic teeth 14 or a combination of both, e.g. conductive teeth with a ferromagnetic inlay. Alternatively the disc may be made of insulating material with conductive segments (72), Fig. 6 (not shown), printed round its periphery. In operation the coil 11 is connected to the output of an H.F. oscillator, the coil 12 forming a regenerative feedback to the oscillator, so that in the absence of a tooth the oscillator is maintained in oscillation and stops oscillating wnen a tooth is positioned between the coils. The output from the ocillator is fed via a demodulator to a Schmidt trigger circuit to provide a square wave output. The oscillator may be connected to a multivibrator whose oscillations will only be maintained in the absence of a tooth between the coils.
GB31508/67A 1966-07-08 1967-07-07 Position Responsive Signal Generator Expired GB1199063A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US56387366A 1966-07-08 1966-07-08

Publications (1)

Publication Number Publication Date
GB1199063A true GB1199063A (en) 1970-07-15

Family

ID=24252231

Family Applications (1)

Application Number Title Priority Date Filing Date
GB31508/67A Expired GB1199063A (en) 1966-07-08 1967-07-07 Position Responsive Signal Generator

Country Status (3)

Country Link
US (1) US3471844A (en)
DE (1) DE1566791A1 (en)
GB (1) GB1199063A (en)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3651500A (en) * 1970-04-06 1972-03-21 Iomec Method and apparatus for detecting the position of moving parts
JPS4718545U (en) * 1971-03-31 1972-11-01
JPS5431694B1 (en) * 1971-04-19 1979-10-09
JPS5349415Y2 (en) * 1972-02-17 1978-11-27
JPS5319386B2 (en) * 1972-11-14 1978-06-20
GB1472258A (en) * 1973-09-15 1977-05-04 Lucas Electrical Ltd Pulse producing devices
US4123735A (en) * 1975-02-25 1978-10-31 Mash Dmitry M Induction-type meter for measuring mechanical quantities
US4124814A (en) * 1977-10-03 1978-11-07 Rockwell International Corporation Magnetic displacement transducer wherein two relatively movable gratings vary the magnetic field coupled to a Hall plate proportional to the displacement
GB1566396A (en) * 1978-03-29 1980-04-30 Hughes Microelectronics Ltd Electrical displacement transducer
JPS55156810A (en) * 1979-05-25 1980-12-06 Nippon Soken Inc Displacement detector
DE2935965B2 (en) * 1979-09-06 1981-07-16 Kurt 2110 Buchholz Fritze Arrangement for telemetric monitoring of moving machine parts.
US4355364A (en) * 1980-02-04 1982-10-19 Caterpillar Tractor Co. Velocity sensing system
US4353050A (en) * 1980-06-13 1982-10-05 Ranco Incorporated Displacement measuring transducer
GB8704900D0 (en) * 1987-03-03 1987-04-08 Lucas Ind Plc Transducer
US4914390A (en) * 1988-08-11 1990-04-03 Eastman Kodak Company Transducer for determining the instantaneous relative angular positions between two members
US4944681A (en) * 1989-01-11 1990-07-31 Burgio Paul A Plush toy with ear system for displaying normal and abnormal eardrums
USH1990H1 (en) * 1998-12-23 2001-09-04 Caterpillar Inc. Magnetic shunt device for hall effect applications

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2234184A (en) * 1938-06-14 1941-03-11 Bristel Company Electronic control system
US2976495A (en) * 1957-04-08 1961-03-21 Metrawatt Ag Instrument movement controlled high frequency inductor
US3064191A (en) * 1959-01-16 1962-11-13 Honeywell Regulator Co Electrical apparatus

Also Published As

Publication number Publication date
US3471844A (en) 1969-10-07
DE1566791A1 (en) 1970-12-23

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees