GB2278199B - Improvements in or relating to conductive object detectors - Google Patents

Improvements in or relating to conductive object detectors

Info

Publication number
GB2278199B
GB2278199B GB9309532A GB9309532A GB2278199B GB 2278199 B GB2278199 B GB 2278199B GB 9309532 A GB9309532 A GB 9309532A GB 9309532 A GB9309532 A GB 9309532A GB 2278199 B GB2278199 B GB 2278199B
Authority
GB
United Kingdom
Prior art keywords
relating
conductive object
object detectors
detectors
conductive
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 - Lifetime
Application number
GB9309532A
Other versions
GB9309532D0 (en
GB2278199A (en
Inventor
Christopher Keith Richardson
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.)
Roke Manor Research Ltd
Original Assignee
Roke Manor Research 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
Application filed by Roke Manor Research Ltd filed Critical Roke Manor Research Ltd
Priority to GB9309532A priority Critical patent/GB2278199B/en
Publication of GB9309532D0 publication Critical patent/GB9309532D0/en
Publication of GB2278199A publication Critical patent/GB2278199A/en
Application granted granted Critical
Publication of GB2278199B publication Critical patent/GB2278199B/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V3/00—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
    • G01V3/08—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices
    • G01V3/10—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices using induction coils
    • G01V3/104—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices using induction coils using several coupled or uncoupled coils
    • G01V3/105—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices using induction coils using several coupled or uncoupled coils forming directly coupled primary and secondary coils or loops
    • G01V3/107—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices using induction coils using several coupled or uncoupled coils forming directly coupled primary and secondary coils or loops using compensating coil or loop arrangements
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
    • G01B7/02—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Remote Sensing (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Electromagnetism (AREA)
  • Environmental & Geological Engineering (AREA)
  • Geology (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geophysics (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
  • Geophysics And Detection Of Objects (AREA)
GB9309532A 1993-05-08 1993-05-08 Improvements in or relating to conductive object detectors Expired - Lifetime GB2278199B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9309532A GB2278199B (en) 1993-05-08 1993-05-08 Improvements in or relating to conductive object detectors

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9309532A GB2278199B (en) 1993-05-08 1993-05-08 Improvements in or relating to conductive object detectors

Publications (3)

Publication Number Publication Date
GB9309532D0 GB9309532D0 (en) 1993-06-23
GB2278199A GB2278199A (en) 1994-11-23
GB2278199B true GB2278199B (en) 1997-07-23

Family

ID=10735178

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9309532A Expired - Lifetime GB2278199B (en) 1993-05-08 1993-05-08 Improvements in or relating to conductive object detectors

Country Status (1)

Country Link
GB (1) GB2278199B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB0201465D0 (en) * 2002-01-23 2002-03-13 Roke Manor Research Pre-mri metal detector
EP1332719A1 (en) * 2002-01-23 2003-08-06 Roke Manor Research Limited Method and apparatus to detect metal fragments in patients
FR2867569B1 (en) * 2004-03-11 2006-05-26 Ass Pour La Promotion Et Le De METHOD AND INSTALLATION FOR DETECTING THE PRESENCE OF A DETECTOR EMITTING AN ELECTROMAGNETIC FIELD
DE102017210943A1 (en) * 2017-06-28 2019-01-03 Robert Bosch Gmbh Method for calibrating an inductive position sensor and location sensor

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0393387A2 (en) * 1989-04-19 1990-10-24 INSTITUT DR. FRIEDRICH FÖRSTER PRÜFGERÄTEBAU GMBH & CO. KG Coil arrangement for an inductive detection apparatus
US5068612A (en) * 1989-06-20 1991-11-26 Institut Dr. Friedrich Forster Prufgeratebau Gmbh & Co. Kg Electromagnetic shield for an inductive search coil assembly
GB2256713A (en) * 1991-06-11 1992-12-16 Millstrong Ltd Eddy current flaw size detecting probe
WO1993006433A1 (en) * 1991-09-24 1993-04-01 Industrial Contractors Holland B.V. Position measurement by radio frequency transponders

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0393387A2 (en) * 1989-04-19 1990-10-24 INSTITUT DR. FRIEDRICH FÖRSTER PRÜFGERÄTEBAU GMBH & CO. KG Coil arrangement for an inductive detection apparatus
US5068612A (en) * 1989-06-20 1991-11-26 Institut Dr. Friedrich Forster Prufgeratebau Gmbh & Co. Kg Electromagnetic shield for an inductive search coil assembly
GB2256713A (en) * 1991-06-11 1992-12-16 Millstrong Ltd Eddy current flaw size detecting probe
WO1993006433A1 (en) * 1991-09-24 1993-04-01 Industrial Contractors Holland B.V. Position measurement by radio frequency transponders

Also Published As

Publication number Publication date
GB9309532D0 (en) 1993-06-23
GB2278199A (en) 1994-11-23

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Legal Events

Date Code Title Description
PE20 Patent expired after termination of 20 years

Expiry date: 20130507