JPS57187650A - Metal detector - Google Patents

Metal detector

Info

Publication number
JPS57187650A
JPS57187650A JP56072716A JP7271681A JPS57187650A JP S57187650 A JPS57187650 A JP S57187650A JP 56072716 A JP56072716 A JP 56072716A JP 7271681 A JP7271681 A JP 7271681A JP S57187650 A JPS57187650 A JP S57187650A
Authority
JP
Japan
Prior art keywords
divider
frequencies
metal
oscillator
test object
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
JP56072716A
Other languages
English (en)
Japanese (ja)
Other versions
JPS637634B2 (enrdf_load_stackoverflow
Inventor
Masahiro Tarui
Yasumoto Suzuki
Toshiharu Tanaka
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 JP56072716A priority Critical patent/JPS57187650A/ja
Publication of JPS57187650A publication Critical patent/JPS57187650A/ja
Publication of JPS637634B2 publication Critical patent/JPS637634B2/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)
JP56072716A 1981-05-13 1981-05-13 Metal detector Granted JPS57187650A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56072716A JPS57187650A (en) 1981-05-13 1981-05-13 Metal detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56072716A JPS57187650A (en) 1981-05-13 1981-05-13 Metal detector

Publications (2)

Publication Number Publication Date
JPS57187650A true JPS57187650A (en) 1982-11-18
JPS637634B2 JPS637634B2 (enrdf_load_stackoverflow) 1988-02-17

Family

ID=13497347

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56072716A Granted JPS57187650A (en) 1981-05-13 1981-05-13 Metal detector

Country Status (1)

Country Link
JP (1) JPS57187650A (enrdf_load_stackoverflow)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6249283A (ja) * 1985-08-28 1987-03-03 Nec Corp フエライト近接センサ
JPS6269184A (ja) * 1985-09-17 1987-03-30 アイデンティテック・コ−ポレ−ション 誘導磁界式物品監視システム
US4975646A (en) * 1988-01-15 1990-12-04 Llamas Llamas Francisco J Detector system for recognizing a magnetic material
WO2006034900A1 (de) * 2004-09-29 2006-04-06 Robert Bosch Gmbh Vorrichtung zur ortung metallischer objekte sowie verfahren zum abgleich einer solchen vorrichtung
US8278918B2 (en) 2010-10-07 2012-10-02 Mettler-Toledo Safeline Limited Method for operating of a metal detection system and metal detection system
US8314713B2 (en) 2010-10-07 2012-11-20 Mettler-Toledo Safeline Limited Method for monitoring the operation of a metal detection system and metal detection system
US8587301B2 (en) 2010-10-07 2013-11-19 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

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0734742U (ja) * 1993-12-16 1995-06-27 サッポロビール株式会社 瓶詰め飲料用ラックおよびラックユニット

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6249283A (ja) * 1985-08-28 1987-03-03 Nec Corp フエライト近接センサ
JPS6269184A (ja) * 1985-09-17 1987-03-30 アイデンティテック・コ−ポレ−ション 誘導磁界式物品監視システム
US4975646A (en) * 1988-01-15 1990-12-04 Llamas Llamas Francisco J Detector system for recognizing a magnetic material
WO2006034900A1 (de) * 2004-09-29 2006-04-06 Robert Bosch Gmbh Vorrichtung zur ortung metallischer objekte sowie verfahren zum abgleich einer solchen vorrichtung
US8278918B2 (en) 2010-10-07 2012-10-02 Mettler-Toledo Safeline Limited Method for operating of a metal detection system and metal detection system
US8314713B2 (en) 2010-10-07 2012-11-20 Mettler-Toledo Safeline Limited Method for monitoring the operation of a metal detection system and metal detection system
US8587301B2 (en) 2010-10-07 2013-11-19 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

Also Published As

Publication number Publication date
JPS637634B2 (enrdf_load_stackoverflow) 1988-02-17

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