FR2658922B1 - Dispositif de detection de corps contenant un metal. - Google Patents
Dispositif de detection de corps contenant un metal.Info
- Publication number
- FR2658922B1 FR2658922B1 FR9002370A FR9002370A FR2658922B1 FR 2658922 B1 FR2658922 B1 FR 2658922B1 FR 9002370 A FR9002370 A FR 9002370A FR 9002370 A FR9002370 A FR 9002370A FR 2658922 B1 FR2658922 B1 FR 2658922B1
- Authority
- FR
- France
- Prior art keywords
- detection device
- containing metal
- body detection
- device containing
- 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 - Fee Related
Links
- 238000001514 detection method Methods 0.000 title 1
- 239000002184 metal Substances 0.000 title 1
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
- G01V3/108—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 the emitter and the receiver coils or loops being uncoupled by positioning them perpendicularly to each other
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)
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB9003892A GB2241332A (en) | 1990-02-26 | 1990-02-21 | Metalliferous objects detector |
| US07/484,428 US5039946A (en) | 1990-02-26 | 1990-02-23 | Metalliferous objects detector having a pair of angularly positioned driving loops and a pair of parallel, coaxial receiving loops |
| DE4005817A DE4005817A1 (de) | 1990-02-26 | 1990-02-23 | Einrichtung zur erkennung von metallhaltigen objekten |
| FR9002370A FR2658922B1 (fr) | 1990-02-26 | 1990-02-26 | Dispositif de detection de corps contenant un metal. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9002370A FR2658922B1 (fr) | 1990-02-26 | 1990-02-26 | Dispositif de detection de corps contenant un metal. |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2658922A1 FR2658922A1 (fr) | 1991-08-30 |
| FR2658922B1 true FR2658922B1 (fr) | 1992-07-10 |
Family
ID=9394142
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR9002370A Expired - Fee Related FR2658922B1 (fr) | 1990-02-26 | 1990-02-26 | Dispositif de detection de corps contenant un metal. |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US5039946A (fr) |
| DE (1) | DE4005817A1 (fr) |
| FR (1) | FR2658922B1 (fr) |
| GB (1) | GB2241332A (fr) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5506506A (en) * | 1992-01-14 | 1996-04-09 | Halcro Nominees Pty Ltd. | Metal detector for detecting and discriminating between ferrous and non-ferrous targets in ground |
| GB2292859B (en) * | 1994-08-27 | 1997-11-05 | Roke Manor Research | Improvements in or relating to buried object detection systems |
| US5969528A (en) * | 1998-01-22 | 1999-10-19 | Garrett Electronics, Inc. | Dual field metal detector |
| US7649356B2 (en) * | 2002-12-18 | 2010-01-19 | White's Electronics, Inc. | Pulse induction metal detector having high energy efficiency and sensitivity |
| US9684090B1 (en) * | 2013-12-23 | 2017-06-20 | SeeScan, Inc. | Nulled-signal utility locating devices, systems, and methods |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB827527A (en) * | 1955-12-21 | 1960-02-03 | Rank Cintel Ltd | Improvements in or relating to metal or like detector apparatus |
| DE2530589A1 (de) * | 1975-07-09 | 1977-01-27 | Prakla Seismos Gmbh | Verfahren und anordnung zur ueberwachung von rohrleitungen und dergleichen |
| FR2353068A1 (fr) * | 1976-05-24 | 1977-12-23 | Intersub Dev Sa | Appareil de reperage d'un objet metallique allonge |
| GB2004069B (en) * | 1977-08-20 | 1982-04-21 | Plessey Co Ltd | Metal detectors |
| US4255710A (en) * | 1978-05-19 | 1981-03-10 | Weber Harold J | Plural search frequency directional metal detector apparatus having enhanced sensitivity |
| SU1190330A1 (ru) * | 1984-02-28 | 1985-11-07 | Специальное проектно-конструкторское бюро "Проектнефтегазспецмонтаж" | Металлоискатель |
-
1990
- 1990-02-21 GB GB9003892A patent/GB2241332A/en not_active Withdrawn
- 1990-02-23 DE DE4005817A patent/DE4005817A1/de not_active Withdrawn
- 1990-02-23 US US07/484,428 patent/US5039946A/en not_active Expired - Fee Related
- 1990-02-26 FR FR9002370A patent/FR2658922B1/fr not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| GB2241332A (en) | 1991-08-28 |
| US5039946A (en) | 1991-08-13 |
| FR2658922A1 (fr) | 1991-08-30 |
| GB9003892D0 (en) | 1990-04-18 |
| DE4005817A1 (de) | 1991-08-29 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse |