NO821485L - Innretning for deteksjon av metallgjenstander. - Google Patents
Innretning for deteksjon av metallgjenstander.Info
- Publication number
- NO821485L NO821485L NO821485A NO821485A NO821485L NO 821485 L NO821485 L NO 821485L NO 821485 A NO821485 A NO 821485A NO 821485 A NO821485 A NO 821485A NO 821485 L NO821485 L NO 821485L
- Authority
- NO
- Norway
- Prior art keywords
- signal
- coil
- emitted
- transmitter coil
- amplitude
- Prior art date
Links
- 239000002184 metal Substances 0.000 title claims description 13
- 229910052751 metal Inorganic materials 0.000 title claims description 13
- 238000001514 detection method Methods 0.000 title description 2
- 230000005672 electromagnetic field Effects 0.000 claims description 14
- 230000010354 integration Effects 0.000 claims 1
- 239000002800 charge carrier Substances 0.000 description 4
- 230000000977 initiatory effect Effects 0.000 description 4
- 230000003321 amplification Effects 0.000 description 3
- 239000003990 capacitor Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000003199 nucleic acid amplification method Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000005293 physical law Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000010363 phase shift Effects 0.000 description 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
- G01V3/105—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
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Remote Sensing (AREA)
- Geology (AREA)
- Environmental & Geological Engineering (AREA)
- Electromagnetism (AREA)
- General Life Sciences & Earth Sciences (AREA)
- General Physics & Mathematics (AREA)
- Geophysics (AREA)
- Geophysics And Detection Of Objects (AREA)
- Control Of Vending Devices And Auxiliary Devices For Vending Devices (AREA)
- Control And Other Processes For Unpacking Of Materials (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE8102827A SE426269B (sv) | 1981-05-06 | 1981-05-06 | Anordning vid detektering av metallforemal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NO821485L true NO821485L (no) | 1982-11-08 |
Family
ID=20343740
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NO821485A NO821485L (no) | 1981-05-06 | 1982-05-05 | Innretning for deteksjon av metallgjenstander. |
Country Status (11)
| Country | Link |
|---|---|
| JP (1) | JPS57192887A (de) |
| BE (1) | BE893088A (de) |
| CA (1) | CA1198165A (de) |
| CH (1) | CH656231A5 (de) |
| DE (1) | DE3217033A1 (de) |
| FR (1) | FR2505508B1 (de) |
| GB (1) | GB2097933B (de) |
| IT (1) | IT1147941B (de) |
| NL (1) | NL8201811A (de) |
| NO (1) | NO821485L (de) |
| SE (1) | SE426269B (de) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59141001A (ja) * | 1983-02-01 | 1984-08-13 | Mitsubishi Electric Corp | 金属管の有効端末位置検出方法 |
| SE470289B (sv) * | 1992-11-04 | 1994-01-10 | Bofors Ab | Magnetiskt zonrör |
| US5426363A (en) * | 1993-04-26 | 1995-06-20 | Kabushiki Kaisha Honda Denshi Giken | Object detecting device |
| AU2009262370B2 (en) * | 2008-06-27 | 2014-11-27 | Minelab Electronics Pty Limited | Constant current metal detector with driven transmit coil |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB835128A (en) * | 1955-09-17 | 1960-05-18 | Asea Ab | Apparatus for examining a substance utilising the effect of the substance on the q factor of a resonant circuit |
| DE2052989C3 (de) * | 1970-10-30 | 1973-11-08 | Guenther Dipl.-Ing. 2209 Sushoern Weber | Durch einen oder mehrere sich be wegende Gegenstande auslosbares Schalt gerat |
| GB1448877A (en) * | 1973-09-04 | 1976-09-08 | Weber G | Electronic switching device for sensing a body and for converting such sensing into an electrical signal |
| GB1561641A (en) * | 1976-08-05 | 1980-02-27 | Redland Automation Ltd | Presence detector apparatus |
| LU75628A1 (de) * | 1976-08-19 | 1978-04-13 | ||
| DE2722498C3 (de) * | 1977-05-18 | 1982-02-04 | Walter Ing.(Grad.) 8728 Hassfurt Voll | Einrichtung an einem Kraftfahrzeug zur Anzeige eines Mindestabstandes |
| DE2722511A1 (de) * | 1977-05-18 | 1978-11-30 | Voll Walter | Metallsuchgeraet |
-
1981
- 1981-05-06 SE SE8102827A patent/SE426269B/sv not_active IP Right Cessation
-
1982
- 1982-04-22 GB GB8211642A patent/GB2097933B/en not_active Expired
- 1982-05-03 NL NL8201811A patent/NL8201811A/nl not_active Application Discontinuation
- 1982-05-04 JP JP57075053A patent/JPS57192887A/ja active Pending
- 1982-05-05 IT IT48333/82A patent/IT1147941B/it active
- 1982-05-05 FR FR8207818A patent/FR2505508B1/fr not_active Expired
- 1982-05-05 NO NO821485A patent/NO821485L/no unknown
- 1982-05-05 CH CH2774/82A patent/CH656231A5/de not_active IP Right Cessation
- 1982-05-05 CA CA000402340A patent/CA1198165A/en not_active Expired
- 1982-05-06 BE BE0/208015A patent/BE893088A/fr not_active IP Right Cessation
- 1982-05-06 DE DE19823217033 patent/DE3217033A1/de active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| GB2097933B (en) | 1985-05-15 |
| NL8201811A (nl) | 1982-12-01 |
| CH656231A5 (de) | 1986-06-13 |
| DE3217033A1 (de) | 1982-11-25 |
| BE893088A (fr) | 1982-08-30 |
| JPS57192887A (en) | 1982-11-27 |
| FR2505508A1 (fr) | 1982-11-12 |
| IT8248333A0 (it) | 1982-05-05 |
| SE8102827L (sv) | 1982-11-07 |
| DE3217033C2 (de) | 1991-01-03 |
| FR2505508B1 (fr) | 1985-11-29 |
| SE426269B (sv) | 1982-12-20 |
| GB2097933A (en) | 1982-11-10 |
| IT1147941B (it) | 1986-11-26 |
| CA1198165A (en) | 1985-12-17 |
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