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FR2169437A5 - Contact free position pick-off - using multiple differential transformers to produce gray coded output - Google Patents

Contact free position pick-off - using multiple differential transformers to produce gray coded output

Info

Publication number
FR2169437A5
FR2169437A5 FR7202293A FR7202293A FR2169437A5 FR 2169437 A5 FR2169437 A5 FR 2169437A5 FR 7202293 A FR7202293 A FR 7202293A FR 7202293 A FR7202293 A FR 7202293A FR 2169437 A5 FR2169437 A5 FR 2169437A5
Authority
FR
France
Prior art keywords
differential transformers
position pick
primary
free position
coded 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
FR7202293A
Other languages
French (fr)
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.)
Merlin Gerin SA
Original Assignee
Merlin Gerin SA
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 Merlin Gerin SA filed Critical Merlin Gerin SA
Priority to FR7202293A priority Critical patent/FR2169437A5/en
Priority to BE793944D priority patent/BE793944A/en
Priority to US324402A priority patent/US3890607A/en
Priority to GB319873A priority patent/GB1416895A/en
Priority to DE2303044A priority patent/DE2303044C2/en
Application granted granted Critical
Publication of FR2169437A5 publication Critical patent/FR2169437A5/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
    • G01D5/22—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
    • G01D5/225—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 mutual induction between the two coils
    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21C—NUCLEAR REACTORS
    • G21C17/00—Monitoring; Testing ; Maintaining
    • G21C17/10—Structural combination of fuel element, control rod, reactor core, or moderator structure with sensitive instruments, e.g. for measuring radioactivity, strain
    • G21C17/12—Sensitive element forming part of control element
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E30/00—Energy generation of nuclear origin
    • Y02E30/30—Nuclear fission reactors

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • General Engineering & Computer Science (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Monitoring And Testing Of Nuclear Reactors (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
  • Magnetic Bearings And Hydrostatic Bearings (AREA)

Abstract

A common primary is used for all differential transformers, whose pairs of secondary coil elements are uniformly spaced along the path of the moving body whose magnetic props. produce zero outputs from any pair of coils in which the coupling to the primary is identical for each half. A pair of compensating coils may be added to produce control signals for a constant voltage supply regulator for the primary. Esp. applicable for control of rod position pick offs in nuclear reactors, all electrical parts being outside the pressurised zone.
FR7202293A 1972-01-24 1972-01-24 Contact free position pick-off - using multiple differential transformers to produce gray coded output Expired FR2169437A5 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
FR7202293A FR2169437A5 (en) 1972-01-24 1972-01-24 Contact free position pick-off - using multiple differential transformers to produce gray coded output
BE793944D BE793944A (en) 1972-01-24 1973-01-12 MECHANICAL CONTACTLESS POSITION SENSOR
US324402A US3890607A (en) 1972-01-24 1973-01-17 Electromagnetic position indicator
GB319873A GB1416895A (en) 1972-01-24 1973-01-22 Magnetic position indicator
DE2303044A DE2303044C2 (en) 1972-01-24 1973-01-23 Device for determining the position of an object moving along a predetermined path with a non-contact scanner

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7202293A FR2169437A5 (en) 1972-01-24 1972-01-24 Contact free position pick-off - using multiple differential transformers to produce gray coded output

Publications (1)

Publication Number Publication Date
FR2169437A5 true FR2169437A5 (en) 1973-09-07

Family

ID=9092360

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7202293A Expired FR2169437A5 (en) 1972-01-24 1972-01-24 Contact free position pick-off - using multiple differential transformers to produce gray coded output

Country Status (1)

Country Link
FR (1) FR2169437A5 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2468886A1 (en) * 1979-11-03 1981-05-08 Bosch Gmbh Robert INDUCTIVE MEASUREMENT INSTALLATION FOR DETECTING THE RUN OF A CONTROL OR CONTROL MEMBER, IN PARTICULAR IN AN INTERNAL COMBUSTION ENGINE
EP0058342A1 (en) * 1981-02-13 1982-08-25 BROWN, BOVERI & CIE Aktiengesellschaft Method and apparatus for measuring the position of a core rod
EP0150134A2 (en) * 1984-01-24 1985-07-31 Westinghouse Electric Corporation Digital, electromagnetic nuclear reactor control rod position indicator with compensation
WO2012119713A1 (en) * 2011-03-07 2012-09-13 Areva Np Gmbh Apparatus for detecting a magnetically conductive object and position measuring system for measuring the position of a guide rod and associated position measuring method
WO2013104441A1 (en) * 2012-01-13 2013-07-18 Areva Gmbh Device for measuring the position of a movable control rod in a nuclear reactor

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2468886A1 (en) * 1979-11-03 1981-05-08 Bosch Gmbh Robert INDUCTIVE MEASUREMENT INSTALLATION FOR DETECTING THE RUN OF A CONTROL OR CONTROL MEMBER, IN PARTICULAR IN AN INTERNAL COMBUSTION ENGINE
EP0058342A1 (en) * 1981-02-13 1982-08-25 BROWN, BOVERI & CIE Aktiengesellschaft Method and apparatus for measuring the position of a core rod
EP0150134A2 (en) * 1984-01-24 1985-07-31 Westinghouse Electric Corporation Digital, electromagnetic nuclear reactor control rod position indicator with compensation
EP0150134A3 (en) * 1984-01-24 1987-09-23 Westinghouse Electric Corporation Digital, electromagnetic rod position indicator with compensation
WO2012119713A1 (en) * 2011-03-07 2012-09-13 Areva Np Gmbh Apparatus for detecting a magnetically conductive object and position measuring system for measuring the position of a guide rod and associated position measuring method
US9329019B2 (en) 2011-03-07 2016-05-03 Areva Gmbh Apparatus for detecting a magnetically conductive object and position measuring system for measuring the position of a guide rod and associated position measuring method
WO2013104441A1 (en) * 2012-01-13 2013-07-18 Areva Gmbh Device for measuring the position of a movable control rod in a nuclear reactor

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Legal Events

Date Code Title Description
ST Notification of lapse