JPS5229247A - Metal detecting method - Google Patents

Metal detecting method

Info

Publication number
JPS5229247A
JPS5229247A JP50105465A JP10546575A JPS5229247A JP S5229247 A JPS5229247 A JP S5229247A JP 50105465 A JP50105465 A JP 50105465A JP 10546575 A JP10546575 A JP 10546575A JP S5229247 A JPS5229247 A JP S5229247A
Authority
JP
Japan
Prior art keywords
detecting method
metal detecting
regard
approach
edges
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
JP50105465A
Other languages
Japanese (ja)
Other versions
JPS5843710B2 (en
Inventor
Hisao Suzuki
Yasuhiro Sawada
Yoshiaki Matsuoka
Takaharu Yasuda
Akira Kubota
Tadashi Inoue
Satoshi Ichioka
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.)
Mishima Kosan Co Ltd
Nippon Steel Corp
Original Assignee
Mishima Kosan Co Ltd
Nippon Steel 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 Mishima Kosan Co Ltd, Nippon Steel Corp filed Critical Mishima Kosan Co Ltd
Priority to JP50105465A priority Critical patent/JPS5843710B2/en
Publication of JPS5229247A publication Critical patent/JPS5229247A/en
Publication of JPS5843710B2 publication Critical patent/JPS5843710B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Geophysics And Detection Of Objects (AREA)
  • Switches That Are Operated By Magnetic Or Electric Fields (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)

Abstract

PURPOSE: By detecting variations of predetermined alternation magnetic flux with search coil, approach, passing and edges are detected accurately without regard to surface blemishes of nonmagnetic conductor metals.
COPYRIGHT: (C)1977,JPO&Japio
JP50105465A 1975-08-29 1975-08-29 Kinzokubutsutaino Kenchihouhou Expired JPS5843710B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP50105465A JPS5843710B2 (en) 1975-08-29 1975-08-29 Kinzokubutsutaino Kenchihouhou

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP50105465A JPS5843710B2 (en) 1975-08-29 1975-08-29 Kinzokubutsutaino Kenchihouhou

Publications (2)

Publication Number Publication Date
JPS5229247A true JPS5229247A (en) 1977-03-04
JPS5843710B2 JPS5843710B2 (en) 1983-09-28

Family

ID=14408314

Family Applications (1)

Application Number Title Priority Date Filing Date
JP50105465A Expired JPS5843710B2 (en) 1975-08-29 1975-08-29 Kinzokubutsutaino Kenchihouhou

Country Status (1)

Country Link
JP (1) JPS5843710B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5339029A (en) * 1991-08-14 1994-08-16 Elecktro-Mechanik Gmbh Methods and apparatus for measuring the postion of an edge of a metal strip by electronic induction

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3872380A (en) * 1974-01-02 1975-03-18 Robert F Gardiner Metal detector distinguishing between different metals by using a bias circuit actuated by the phase shifts caused by the metals

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3872380A (en) * 1974-01-02 1975-03-18 Robert F Gardiner Metal detector distinguishing between different metals by using a bias circuit actuated by the phase shifts caused by the metals

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5339029A (en) * 1991-08-14 1994-08-16 Elecktro-Mechanik Gmbh Methods and apparatus for measuring the postion of an edge of a metal strip by electronic induction

Also Published As

Publication number Publication date
JPS5843710B2 (en) 1983-09-28

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