CA1198165A - Detecteur d'objects metalliques - Google Patents
Detecteur d'objects metalliquesInfo
- Publication number
- CA1198165A CA1198165A CA000402340A CA402340A CA1198165A CA 1198165 A CA1198165 A CA 1198165A CA 000402340 A CA000402340 A CA 000402340A CA 402340 A CA402340 A CA 402340A CA 1198165 A CA1198165 A CA 1198165A
- Authority
- CA
- Canada
- Prior art keywords
- coil
- signal
- transmitter
- signal emitted
- amplitude
- 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
Links
- 238000001514 detection method Methods 0.000 title claims description 4
- 230000005672 electromagnetic field Effects 0.000 claims abstract description 14
- 230000001702 transmitter Effects 0.000 claims description 2
- 230000003321 amplification Effects 0.000 abstract description 6
- 238000003199 nucleic acid amplification method Methods 0.000 abstract description 6
- 238000010586 diagram Methods 0.000 description 5
- 239000002800 charge carrier Substances 0.000 description 4
- 230000000977 initiatory effect Effects 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 239000003990 capacitor Substances 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
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 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 (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE8102827A SE426269B (sv) | 1981-05-06 | 1981-05-06 | Anordning vid detektering av metallforemal |
| SE81.02827-6 | 1981-05-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1198165A true CA1198165A (fr) | 1985-12-17 |
Family
ID=20343740
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000402340A Expired CA1198165A (fr) | 1981-05-06 | 1982-05-05 | Detecteur d'objects metalliques |
Country Status (11)
| Country | Link |
|---|---|
| JP (1) | JPS57192887A (fr) |
| BE (1) | BE893088A (fr) |
| CA (1) | CA1198165A (fr) |
| CH (1) | CH656231A5 (fr) |
| DE (1) | DE3217033A1 (fr) |
| FR (1) | FR2505508B1 (fr) |
| GB (1) | GB2097933B (fr) |
| IT (1) | IT1147941B (fr) |
| NL (1) | NL8201811A (fr) |
| NO (1) | NO821485L (fr) |
| SE (1) | SE426269B (fr) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5423262A (en) * | 1992-11-04 | 1995-06-13 | Bofors Ab | Magnetic proximity fuse |
Families Citing this family (3)
| 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 |
| 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 (fr) * | 1976-08-19 | 1978-04-13 | ||
| DE2722511A1 (de) * | 1977-05-18 | 1978-11-30 | Voll Walter | Metallsuchgeraet |
| DE2722498C3 (de) * | 1977-05-18 | 1982-02-04 | Walter Ing.(Grad.) 8728 Hassfurt Voll | Einrichtung an einem Kraftfahrzeug zur Anzeige eines Mindestabstandes |
-
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 FR FR8207818A patent/FR2505508B1/fr not_active Expired
- 1982-05-05 CH CH2774/82A patent/CH656231A5/de not_active IP Right Cessation
- 1982-05-05 IT IT48333/82A patent/IT1147941B/it active
- 1982-05-05 NO NO821485A patent/NO821485L/no unknown
- 1982-05-05 CA CA000402340A patent/CA1198165A/fr not_active Expired
- 1982-05-06 DE DE19823217033 patent/DE3217033A1/de active Granted
- 1982-05-06 BE BE0/208015A patent/BE893088A/fr not_active IP Right Cessation
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5423262A (en) * | 1992-11-04 | 1995-06-13 | Bofors Ab | Magnetic proximity fuse |
Also Published As
| Publication number | Publication date |
|---|---|
| GB2097933A (en) | 1982-11-10 |
| NL8201811A (nl) | 1982-12-01 |
| IT8248333A0 (it) | 1982-05-05 |
| SE8102827L (sv) | 1982-11-07 |
| IT1147941B (it) | 1986-11-26 |
| FR2505508A1 (fr) | 1982-11-12 |
| DE3217033A1 (de) | 1982-11-25 |
| JPS57192887A (en) | 1982-11-27 |
| CH656231A5 (de) | 1986-06-13 |
| NO821485L (no) | 1982-11-08 |
| FR2505508B1 (fr) | 1985-11-29 |
| BE893088A (fr) | 1982-08-30 |
| DE3217033C2 (fr) | 1991-01-03 |
| GB2097933B (en) | 1985-05-15 |
| SE426269B (sv) | 1982-12-20 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |