JPS56117178A - Metal detector - Google Patents
Metal detectorInfo
- Publication number
- JPS56117178A JPS56117178A JP2090680A JP2090680A JPS56117178A JP S56117178 A JPS56117178 A JP S56117178A JP 2090680 A JP2090680 A JP 2090680A JP 2090680 A JP2090680 A JP 2090680A JP S56117178 A JPS56117178 A JP S56117178A
- Authority
- JP
- Japan
- Prior art keywords
- signals
- exciting coils
- disposed
- coils
- dividedly
- 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
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
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)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2090680A JPS56117178A (en) | 1980-02-20 | 1980-02-20 | Metal detector |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2090680A JPS56117178A (en) | 1980-02-20 | 1980-02-20 | Metal detector |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS56117178A true JPS56117178A (en) | 1981-09-14 |
Family
ID=12040265
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2090680A Pending JPS56117178A (en) | 1980-02-20 | 1980-02-20 | Metal detector |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS56117178A (ja) |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0272973U (ja) * | 1988-11-21 | 1990-06-04 | ||
JPH0361592U (ja) * | 1989-10-20 | 1991-06-17 | ||
FR2685491A1 (fr) * | 1991-12-23 | 1993-06-25 | Sextant Avionique | Dispositif electronique de multiplexage de plusieurs charges excitees en courant alternatif. |
WO1999064853A1 (fr) * | 1998-06-12 | 1999-12-16 | Hitachi, Ltd. | Procede et dispositif de triage des metaux |
JP2006058265A (ja) * | 2004-08-24 | 2006-03-02 | Toyo Glass Co Ltd | 金属検出装置及び金属除去装置 |
JP2007298482A (ja) * | 2006-05-08 | 2007-11-15 | Nippon Denji Sokki Kk | 鋼管用磁粉探傷装置 |
JP2012242358A (ja) * | 2011-05-24 | 2012-12-10 | Kobe Steel Ltd | 渦流探傷装置 |
JP2021085802A (ja) * | 2019-11-29 | 2021-06-03 | 協立電機株式会社 | 金属異物検出装置 |
WO2022230032A1 (ja) * | 2021-04-26 | 2022-11-03 | 株式会社ニレコ | コイルセット |
-
1980
- 1980-02-20 JP JP2090680A patent/JPS56117178A/ja active Pending
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0272973U (ja) * | 1988-11-21 | 1990-06-04 | ||
JPH0361592U (ja) * | 1989-10-20 | 1991-06-17 | ||
FR2685491A1 (fr) * | 1991-12-23 | 1993-06-25 | Sextant Avionique | Dispositif electronique de multiplexage de plusieurs charges excitees en courant alternatif. |
WO1993013435A1 (fr) * | 1991-12-23 | 1993-07-08 | Sextant Avionique | Dispositif electronique de multiplexage de plusieurs charges excitees en courant alternatif |
WO1999064853A1 (fr) * | 1998-06-12 | 1999-12-16 | Hitachi, Ltd. | Procede et dispositif de triage des metaux |
JP2006058265A (ja) * | 2004-08-24 | 2006-03-02 | Toyo Glass Co Ltd | 金属検出装置及び金属除去装置 |
JP2007298482A (ja) * | 2006-05-08 | 2007-11-15 | Nippon Denji Sokki Kk | 鋼管用磁粉探傷装置 |
JP2012242358A (ja) * | 2011-05-24 | 2012-12-10 | Kobe Steel Ltd | 渦流探傷装置 |
JP2021085802A (ja) * | 2019-11-29 | 2021-06-03 | 協立電機株式会社 | 金属異物検出装置 |
WO2022230032A1 (ja) * | 2021-04-26 | 2022-11-03 | 株式会社ニレコ | コイルセット |
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