JPS6341502B2 - - Google Patents

Info

Publication number
JPS6341502B2
JPS6341502B2 JP57169642A JP16964282A JPS6341502B2 JP S6341502 B2 JPS6341502 B2 JP S6341502B2 JP 57169642 A JP57169642 A JP 57169642A JP 16964282 A JP16964282 A JP 16964282A JP S6341502 B2 JPS6341502 B2 JP S6341502B2
Authority
JP
Japan
Prior art keywords
frequency
phase
signal
ferrous
metal
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
JP57169642A
Other languages
English (en)
Japanese (ja)
Other versions
JPS5960274A (ja
Inventor
Masahiro Tarui
Yasumoto Suzuki
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.)
Anritsu Corp
Original Assignee
Anritsu 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 Anritsu Corp filed Critical Anritsu Corp
Priority to JP57169642A priority Critical patent/JPS5960274A/ja
Publication of JPS5960274A publication Critical patent/JPS5960274A/ja
Publication of JPS6341502B2 publication Critical patent/JPS6341502B2/ja
Granted 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

Landscapes

  • 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)
  • General Physics & Mathematics (AREA)
  • Geophysics (AREA)
  • Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
  • Geophysics And Detection Of Objects (AREA)
JP57169642A 1982-09-30 1982-09-30 金属検出装置 Granted JPS5960274A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP57169642A JPS5960274A (ja) 1982-09-30 1982-09-30 金属検出装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP57169642A JPS5960274A (ja) 1982-09-30 1982-09-30 金属検出装置

Publications (2)

Publication Number Publication Date
JPS5960274A JPS5960274A (ja) 1984-04-06
JPS6341502B2 true JPS6341502B2 (es) 1988-08-17

Family

ID=15890264

Family Applications (1)

Application Number Title Priority Date Filing Date
JP57169642A Granted JPS5960274A (ja) 1982-09-30 1982-09-30 金属検出装置

Country Status (1)

Country Link
JP (1) JPS5960274A (es)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005119302A1 (ja) * 2004-06-04 2005-12-15 Anritsu Industrial Solutions Co., Ltd. 金属検出装置
KR100788711B1 (ko) * 2004-06-04 2007-12-26 안리츠 산키 시스템 가부시키가이샤 금속 검출 장치

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0619468B2 (ja) * 1984-09-13 1994-03-16 アンリツ株式会社 金属検出装置
JPH0725735Y2 (ja) * 1989-03-31 1995-06-07 アンリツ株式会社 金属検出機
US5654638A (en) * 1995-12-21 1997-08-05 White's Electronics, Inc. Plural Frequency method and system for identifying metal objects in a background environment
SE520723C2 (sv) * 1998-09-01 2003-08-19 Abb Ab Förfarande samt anordning för utförande av på magnetism baserade mätningar
GB2462212B (en) 2005-02-16 2010-05-12 Illinois Tool Works Metal detector
DE102005007803A1 (de) * 2005-02-21 2006-08-24 Robert Bosch Gmbh Verfahren zur Detektion von in einem Medium eingeschlossenen Objekten sowie Messgerät zur Durchführung des Verfahrens
EP2439560B1 (en) 2010-10-07 2013-05-29 Mettler-Toledo Safeline Limited Method for monitoring the operation of a metal detection system and metal detection system
EP2439559B1 (en) 2010-10-07 2013-05-29 Mettler-Toledo Safeline Limited Method for operating of a metal detection system and metal detection system
CA2813496C (en) 2010-10-07 2018-12-04 Mettler-Toledo Safeline Limited Method for operating a metal detection system and metal detection system
US9018935B2 (en) 2011-09-19 2015-04-28 Mettler-Toledo Safeline Limited Method for operating a metal detection apparatus and apparatus

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS49104661A (es) * 1973-02-05 1974-10-03

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS49104661A (es) * 1973-02-05 1974-10-03

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005119302A1 (ja) * 2004-06-04 2005-12-15 Anritsu Industrial Solutions Co., Ltd. 金属検出装置
KR100788711B1 (ko) * 2004-06-04 2007-12-26 안리츠 산키 시스템 가부시키가이샤 금속 검출 장치

Also Published As

Publication number Publication date
JPS5960274A (ja) 1984-04-06

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