JPS55155202A - Position detector - Google Patents

Position detector

Info

Publication number
JPS55155202A
JPS55155202A JP6431779A JP6431779A JPS55155202A JP S55155202 A JPS55155202 A JP S55155202A JP 6431779 A JP6431779 A JP 6431779A JP 6431779 A JP6431779 A JP 6431779A JP S55155202 A JPS55155202 A JP S55155202A
Authority
JP
Japan
Prior art keywords
coils
iron core
secondary coils
core shaft
primary
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.)
Pending
Application number
JP6431779A
Other languages
Japanese (ja)
Inventor
Yukio Nishizawa
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP6431779A priority Critical patent/JPS55155202A/en
Publication of JPS55155202A publication Critical patent/JPS55155202A/en
Pending legal-status Critical Current

Links

Classifications

    • 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

  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)
  • Monitoring And Testing Of Nuclear Reactors (AREA)

Abstract

PURPOSE: To improve the accuracy of detecting the position of an iron core shaft by providing a plurality of pairs of the primary and the secondary coils such that the primary coils alternate the secondary coils, around the outer circumferential surface of a casing through the central portion of the interior of which the iron core is moved, parallel-connecting the primary coils, with both ends thereof connected to an AC power source, and measuring the level difference between electric currents flowing in adjacent secondary coils to detect the position of the iron core shaft.
CONSTITUTION: A casing in which an elongated iron core shaft 1 is moved like a control rod moved in a nuclear reactor is provided with a plurality of alternately arranged primary coils 14, 15, 16... and secondary coils 19, 20..., the primary coils being parallel-connected, with both ends thereof connected to an AC power source. A resistor is connected between upper and lower terminals of each of the secondary coils. The lower terminals are connected together with a common wire. A voltage drop in the resistors in adjacent secondary coils is detected by a differential amplifier. For example, when the iron core shaft is located between coils (p), (q), ..., an output current from the differential amplifier between the secondary coils 19, 20 has a curve 26. The position of the iron core shaft can be accurately detected on the basis of a position (r) corresponding to a peak of the curve 26, irrespective of a temperature.
COPYRIGHT: (C)1980,JPO&Japio
JP6431779A 1979-05-23 1979-05-23 Position detector Pending JPS55155202A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6431779A JPS55155202A (en) 1979-05-23 1979-05-23 Position detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6431779A JPS55155202A (en) 1979-05-23 1979-05-23 Position detector

Publications (1)

Publication Number Publication Date
JPS55155202A true JPS55155202A (en) 1980-12-03

Family

ID=13254729

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6431779A Pending JPS55155202A (en) 1979-05-23 1979-05-23 Position detector

Country Status (1)

Country Link
JP (1) JPS55155202A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4422041A (en) * 1981-07-30 1983-12-20 The United States Of America As Represented By The Secretary Of The Army Magnet position sensing system
US9804286B2 (en) 2014-06-20 2017-10-31 Rolls-Royce Power Engineering Plc Method of optimising the output of a sensor for indicating the relative location of a mettalic object
US10060763B2 (en) 2014-06-20 2018-08-28 Rolls-Royce Power Engineering Plc Sensor assembly for measuring the relative position of a control rod connected to a lead screw within a nuclear reactor

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4422041A (en) * 1981-07-30 1983-12-20 The United States Of America As Represented By The Secretary Of The Army Magnet position sensing system
US9804286B2 (en) 2014-06-20 2017-10-31 Rolls-Royce Power Engineering Plc Method of optimising the output of a sensor for indicating the relative location of a mettalic object
US10060763B2 (en) 2014-06-20 2018-08-28 Rolls-Royce Power Engineering Plc Sensor assembly for measuring the relative position of a control rod connected to a lead screw within a nuclear reactor

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