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JPS5730971A - Metal detector - Google Patents

Metal detector

Info

Publication number
JPS5730971A
JPS5730971A JP10618480A JP10618480A JPS5730971A JP S5730971 A JPS5730971 A JP S5730971A JP 10618480 A JP10618480 A JP 10618480A JP 10618480 A JP10618480 A JP 10618480A JP S5730971 A JPS5730971 A JP S5730971A
Authority
JP
Japan
Prior art keywords
magnetic field
inspection object
metal
flux density
electromagnetic coils
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
JP10618480A
Other languages
Japanese (ja)
Inventor
Kiyomi Torisawa
Katsutoshi Tajima
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.)
PONII SANGYO KK
Original Assignee
PONII SANGYO KK
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 PONII SANGYO KK filed Critical PONII SANGYO KK
Priority to JP10618480A priority Critical patent/JPS5730971A/en
Publication of JPS5730971A publication Critical patent/JPS5730971A/en
Pending 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
    • G01V3/101—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 by measuring the impedance of the search coil; by measuring features of a resonant circuit comprising the search coil

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)
  • Geophysics And Detection Of Objects (AREA)
  • Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)

Abstract

PURPOSE:To make it possible to apply a magnetic field with higher magnetic flux density to an inspection object with a broad width along with stabilization of a detection sensitivity, by arranging a number of E-shaped cores wound with electromagnetic coils on the one side of the inspection object in order to generate a magnetic field. CONSTITUTION:A magnetic field generating device 13 constituted by E-shaped cores 15 wound with electromagnetic coils 14 permits the magnetic field to be applied to an inspection object 12 and detects a change of magnetic flux density of the magnetic field caused by existence of metal in said object to detect metal. The magnetic field generating device 13 with a space part 18 is arranged in large numbers in the width direction of the inspection object 12, and when a switch 25 of a central controlling device 24 turns on, the electromagnetic coils 14 are supplied with current by an AC power source 19, thereby allowing a magnetic field to be applied to the inspection object 12 through bakelite 16. Therefore, when the inspection object 12 is made to travel on a guide member 22 as shown by arrows 23, magnetic flux density changes if a piece of metal 26 is intermixed. This change is further detected by a detector 20, amplified and indicated by a metal detection indicator 21.
JP10618480A 1980-07-31 1980-07-31 Metal detector Pending JPS5730971A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10618480A JPS5730971A (en) 1980-07-31 1980-07-31 Metal detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10618480A JPS5730971A (en) 1980-07-31 1980-07-31 Metal detector

Publications (1)

Publication Number Publication Date
JPS5730971A true JPS5730971A (en) 1982-02-19

Family

ID=14427122

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10618480A Pending JPS5730971A (en) 1980-07-31 1980-07-31 Metal detector

Country Status (1)

Country Link
JP (1) JPS5730971A (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59160787A (en) * 1983-03-04 1984-09-11 Anritsu Corp Method for detecting metal mixed in product and metal detector
JPS6123962A (en) * 1984-07-12 1986-02-01 Hitachi Metals Ltd Detecting method of structure irregularity by eddy current
JPS6191588A (en) * 1984-10-05 1986-05-09 ツリユツラー　ゲゼルシヤフト　ミツト　ベシユレンクテル　ハフツング　ウント　コンパニー　コマンデイトゲゼルシヤフト Device for detecting foreign matter such as metallic piece in textile fiber package
JPS6398559A (en) * 1986-10-16 1988-04-30 Nippon Steel Corp Magnetic powder flaw detection apparatus
JPS63195586A (en) * 1987-02-05 1988-08-12 ツリュツラー　ゲゼルシャフト　ミット　ベシュレンクテル　ハフツング　ウント　コンパニー　コマンディトゲゼルシャフト Device for detecting foreign matter such as metallic piece, wire, etc. in or among fiber mass
JPH0293394A (en) * 1988-09-30 1990-04-04 Anritsu Corp Metal detector
JPH0566218A (en) * 1991-09-05 1993-03-19 Nissei Plastics Ind Co Method and apparatus for measuring distribution of metal
JP2000046956A (en) * 1998-07-30 2000-02-18 Toyo Glass Co Ltd Metal detection device
JP2005214707A (en) * 2004-01-28 2005-08-11 Anritsu Sanki System Co Ltd Metal detector
US20120179394A1 (en) * 2005-02-16 2012-07-12 Clive Francis Kittel Metal Detector

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS528852A (en) * 1975-07-10 1977-01-24 Takenaka Komuten Co Ltd Method and device for detecting a magnetic permeable metallic body whi ch is laid underground
JPS53107866A (en) * 1977-03-03 1978-09-20 Hidetoshi Okuno Buried metal detector

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS528852A (en) * 1975-07-10 1977-01-24 Takenaka Komuten Co Ltd Method and device for detecting a magnetic permeable metallic body whi ch is laid underground
JPS53107866A (en) * 1977-03-03 1978-09-20 Hidetoshi Okuno Buried metal detector

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59160787A (en) * 1983-03-04 1984-09-11 Anritsu Corp Method for detecting metal mixed in product and metal detector
JPS6123962A (en) * 1984-07-12 1986-02-01 Hitachi Metals Ltd Detecting method of structure irregularity by eddy current
JPH0439621B2 (en) * 1984-07-12 1992-06-30
JPS6191588A (en) * 1984-10-05 1986-05-09 ツリユツラー　ゲゼルシヤフト　ミツト　ベシユレンクテル　ハフツング　ウント　コンパニー　コマンデイトゲゼルシヤフト Device for detecting foreign matter such as metallic piece in textile fiber package
JPS6398559A (en) * 1986-10-16 1988-04-30 Nippon Steel Corp Magnetic powder flaw detection apparatus
JPS63195586A (en) * 1987-02-05 1988-08-12 ツリュツラー　ゲゼルシャフト　ミット　ベシュレンクテル　ハフツング　ウント　コンパニー　コマンディトゲゼルシャフト Device for detecting foreign matter such as metallic piece, wire, etc. in or among fiber mass
JPH0293394A (en) * 1988-09-30 1990-04-04 Anritsu Corp Metal detector
JPH0566218A (en) * 1991-09-05 1993-03-19 Nissei Plastics Ind Co Method and apparatus for measuring distribution of metal
JP2000046956A (en) * 1998-07-30 2000-02-18 Toyo Glass Co Ltd Metal detection device
JP2005214707A (en) * 2004-01-28 2005-08-11 Anritsu Sanki System Co Ltd Metal detector
US20120179394A1 (en) * 2005-02-16 2012-07-12 Clive Francis Kittel Metal Detector
US8473235B2 (en) * 2005-02-16 2013-06-25 Illinois Tool Works Inc. Metal detector

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