GB2259989A - Magnetic sensing method and system - Google Patents

Magnetic sensing method and system

Info

Publication number
GB2259989A
GB2259989A GB9223303A GB9223303A GB2259989A GB 2259989 A GB2259989 A GB 2259989A GB 9223303 A GB9223303 A GB 9223303A GB 9223303 A GB9223303 A GB 9223303A GB 2259989 A GB2259989 A GB 2259989A
Authority
GB
United Kingdom
Prior art keywords
movable element
sensor
valve
orientation
magnetic 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.)
Granted
Application number
GB9223303A
Other versions
GB9223303D0 (en
GB2259989B (en
Inventor
Arcy Desmond Joseph D
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.)
Remote Marine Systems Ltd
Original Assignee
Remote Marine Systems 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
Priority claimed from GB9011732A external-priority patent/GB9011732D0/en
Application filed by Remote Marine Systems Ltd filed Critical Remote Marine Systems Ltd
Priority to GB9223303A priority Critical patent/GB2259989B/en
Publication of GB9223303D0 publication Critical patent/GB9223303D0/en
Publication of GB2259989A publication Critical patent/GB2259989A/en
Application granted granted Critical
Publication of GB2259989B publication Critical patent/GB2259989B/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • G01D5/145—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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K37/00—Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
    • F16K37/0025—Electrical or magnetic means
    • F16K37/0041—Electrical or magnetic means for measuring valve parameters

Abstract

A method and system are described for the contactless sensing of a movable element of a mechanism such as a valve part in a subsea oil pipeline. The movable element (8) is provided with a target magnetic field source (10) which moves with the movable element; a magnetic sensor (9) is placed in proximity with the mechanism so as to give a signal dependent on the orientation of the magnetic flux produced by the target magnetic field source (10). The signal from the magnetic sensor is then processed to provide an indication of the position or orientation of the movable element. In this way there is little danger of contamination of the sensor by leakage from the valve, particularly if a cover (22) is provided, and the sensor can be removed or replaced without disturbing the valve.
GB9223303A 1990-05-25 1992-11-06 Magnetic sensing method and system Expired - Fee Related GB2259989B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9223303A GB2259989B (en) 1990-05-25 1992-11-06 Magnetic sensing method and system

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB9011732A GB9011732D0 (en) 1990-05-25 1990-05-25 Magnetic sensing method and system
PCT/GB1991/000827 WO1991019168A1 (en) 1990-05-25 1991-05-24 Magnetic sensing method and system
GB9223303A GB2259989B (en) 1990-05-25 1992-11-06 Magnetic sensing method and system

Publications (3)

Publication Number Publication Date
GB9223303D0 GB9223303D0 (en) 1993-01-06
GB2259989A true GB2259989A (en) 1993-03-31
GB2259989B GB2259989B (en) 1994-02-09

Family

ID=26297115

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9223303A Expired - Fee Related GB2259989B (en) 1990-05-25 1992-11-06 Magnetic sensing method and system

Country Status (1)

Country Link
GB (1) GB2259989B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2380799A (en) * 2001-09-17 2003-04-16 Antech Ltd Non-invasive detectors for wells

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2056692A (en) * 1979-08-18 1981-03-18 Bosch Gmbh Robert Magnetic measurement of position and/or speed of a piston
GB2102955A (en) * 1981-07-13 1983-02-09 Penny And Giles Conductive Pla Improvements relating to servo systems
GB2137313A (en) * 1983-02-23 1984-10-03 Dpl Control Systems Limited Valve position indication
GB2157831A (en) * 1984-04-06 1985-10-30 Emhart Ind Magnetically monitoring the movement of a rod
US4569233A (en) * 1984-02-27 1986-02-11 Universal Flow Monitors Flow meter indicating device

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2056692A (en) * 1979-08-18 1981-03-18 Bosch Gmbh Robert Magnetic measurement of position and/or speed of a piston
GB2102955A (en) * 1981-07-13 1983-02-09 Penny And Giles Conductive Pla Improvements relating to servo systems
GB2137313A (en) * 1983-02-23 1984-10-03 Dpl Control Systems Limited Valve position indication
US4569233A (en) * 1984-02-27 1986-02-11 Universal Flow Monitors Flow meter indicating device
GB2157831A (en) * 1984-04-06 1985-10-30 Emhart Ind Magnetically monitoring the movement of a rod

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
HAS MAGNETO-RESISTIVE CORE" *
MACHINE DESIGN vol. 61, no.2, January 26,1989, CLEVELAND, USp.62; "CONTACTLESS POTENTIOMETER cont. *
PATENT ABSTRACTS OF JAPAN vol.12, no. 363 (P-764)(3210) September 29, 1988 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2380799A (en) * 2001-09-17 2003-04-16 Antech Ltd Non-invasive detectors for wells

Also Published As

Publication number Publication date
GB9223303D0 (en) 1993-01-06
GB2259989B (en) 1994-02-09

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Legal Events

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

Effective date: 20100524