GB1603578A - System and method for identifying samples having conductive properties - Google Patents
System and method for identifying samples having conductive properties Download PDFInfo
- Publication number
- GB1603578A GB1603578A GB1906478A GB1906478A GB1603578A GB 1603578 A GB1603578 A GB 1603578A GB 1906478 A GB1906478 A GB 1906478A GB 1906478 A GB1906478 A GB 1906478A GB 1603578 A GB1603578 A GB 1603578A
- Authority
- GB
- United Kingdom
- Prior art keywords
- coil
- frequency
- resistive component
- phase
- signal
- 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
Classifications
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B13/00—Burglar, theft or intruder alarms
- G08B13/22—Electrical actuation
- G08B13/26—Electrical actuation by proximity of an intruder causing variation in capacitance or inductance of a circuit
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/72—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables
-
- 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)
- General Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Remote Sensing (AREA)
- Environmental & Geological Engineering (AREA)
- Health & Medical Sciences (AREA)
- Geology (AREA)
- Geophysics (AREA)
- Electromagnetism (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
- Geophysics And Detection Of Objects (AREA)
- Measurement Of Resistance Or Impedance (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19782837265 DE2837265C2 (de) | 1978-08-25 | 1978-08-25 | Verfahren zur Identifizierung von Objekten mit leitenden Eigenschaften und Schaltungsanordnung zur Durchführung dieses Verfahrens |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1603578A true GB1603578A (en) | 1981-11-25 |
Family
ID=6047949
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1906478A Expired GB1603578A (en) | 1978-08-25 | 1978-05-11 | System and method for identifying samples having conductive properties |
Country Status (7)
Country | Link |
---|---|
CA (1) | CA1157096A (ko) |
CH (1) | CH660799A5 (ko) |
DE (1) | DE2837265C2 (ko) |
FR (1) | FR2456951A1 (ko) |
GB (1) | GB1603578A (ko) |
NL (1) | NL7903965A (ko) |
SE (1) | SE440832B (ko) |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2140564A (en) * | 1983-05-23 | 1984-11-28 | Central Electr Generat Board | Cable corrosion monitor |
EP0927364A1 (en) * | 1996-09-18 | 1999-07-07 | MacAleese Companies, Inc. | Concealed weapons detection system |
WO2004077044A1 (de) * | 2003-02-28 | 2004-09-10 | Forschungszentrum Jülich GmbH | Verfahren und vorrichtung zum selektiven nachweis ferromagnetischer oder superparamagnetischer partikel |
US7167123B2 (en) | 1999-05-25 | 2007-01-23 | Safe Zone Systems, Inc. | Object detection method and apparatus |
US7450052B2 (en) | 1999-05-25 | 2008-11-11 | The Macaleese Companies, Inc. | Object detection method and apparatus |
US8278918B2 (en) | 2010-10-07 | 2012-10-02 | Mettler-Toledo Safeline Limited | Method for operating of a metal detection system and metal detection system |
US8314713B2 (en) | 2010-10-07 | 2012-11-20 | Mettler-Toledo Safeline Limited | Method for monitoring the operation of a metal detection system and metal detection system |
US8587301B2 (en) | 2010-10-07 | 2013-11-19 | Mettler-Toledo Safeline Limited | Method for operating a metal detection system and metal detection system |
US9018935B2 (en) | 2011-09-19 | 2015-04-28 | Mettler-Toledo Safeline Limited | Method for operating a metal detection apparatus and apparatus |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3228447C2 (de) * | 1982-07-30 | 1986-04-10 | Vallon GmbH, 7412 Eningen | Meßverfahren zur Erkennung von metallischen Gegenständen und Metalldetektor zur Durchführung des Verfahrens |
FR2545221B1 (fr) * | 1983-04-29 | 1985-12-13 | Thomson Jeumont Cables | Capteur de donnees, par courant de foucault, et ensemble de controle de resistivite muni d'un tel capteur |
JPS62501991A (ja) * | 1985-02-15 | 1987-08-06 | ザ ブロ−クン ヒル プロプライエタリイ カンパニ− リミテツド | 鋼鉄の分類 |
DE3713363A1 (de) * | 1987-04-21 | 1988-11-10 | Friedrich Prof Dr Foerster | Suchgeraet zum suchen von metallteilen |
CN1049287A (zh) * | 1989-05-24 | 1991-02-20 | 住友电气工业株式会社 | 治疗导管 |
GB8920412D0 (en) * | 1989-09-08 | 1989-10-25 | Ca Atomic Energy Ltd | Metal detecting system |
DE19521266C1 (de) * | 1995-06-10 | 1997-02-13 | Mesutronic Geraetebau Gmbh | Einrichtung zur Feststellung metallisch leitender Teile |
DE19954716B4 (de) * | 1999-11-13 | 2006-08-31 | Mesutronic Gerätebau GmbH | Funktionsprüfung für einen Metalldetektor |
US7976518B2 (en) | 2005-01-13 | 2011-07-12 | Corpak Medsystems, Inc. | Tubing assembly and signal generator placement control device and method for use with catheter guidance systems |
US9028441B2 (en) | 2011-09-08 | 2015-05-12 | Corpak Medsystems, Inc. | Apparatus and method used with guidance system for feeding and suctioning |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3676772A (en) * | 1970-08-18 | 1972-07-11 | Nasa | Metallic intrusion detector system |
US3686564A (en) * | 1970-10-08 | 1972-08-22 | Westinghouse Electric Corp | Multiple frequency magnetic field technique for differentiating between classes of metal objects |
GB1482976A (en) * | 1975-06-09 | 1977-08-17 | Spencer P | Metal detectors |
-
1978
- 1978-05-11 GB GB1906478A patent/GB1603578A/en not_active Expired
- 1978-08-25 DE DE19782837265 patent/DE2837265C2/de not_active Expired
-
1979
- 1979-04-30 CA CA000326644A patent/CA1157096A/en not_active Expired
- 1979-05-15 FR FR7912313A patent/FR2456951A1/fr active Granted
- 1979-05-17 SE SE7904329A patent/SE440832B/sv not_active IP Right Cessation
- 1979-05-21 CH CH471579A patent/CH660799A5/de not_active IP Right Cessation
- 1979-05-21 NL NL7903965A patent/NL7903965A/nl not_active Application Discontinuation
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2140564A (en) * | 1983-05-23 | 1984-11-28 | Central Electr Generat Board | Cable corrosion monitor |
US4652823A (en) * | 1983-05-23 | 1987-03-24 | Central Electricity Generating Board | Apparatus for and method of monitoring the corrosion in electrical power cables by measuring the variation in induced eddy currents |
EP0927364A1 (en) * | 1996-09-18 | 1999-07-07 | MacAleese Companies, Inc. | Concealed weapons detection system |
US7167123B2 (en) | 1999-05-25 | 2007-01-23 | Safe Zone Systems, Inc. | Object detection method and apparatus |
US7450052B2 (en) | 1999-05-25 | 2008-11-11 | The Macaleese Companies, Inc. | Object detection method and apparatus |
WO2004077044A1 (de) * | 2003-02-28 | 2004-09-10 | Forschungszentrum Jülich GmbH | Verfahren und vorrichtung zum selektiven nachweis ferromagnetischer oder superparamagnetischer partikel |
US8071027B2 (en) | 2003-02-28 | 2011-12-06 | Forschungszentrum Juelich Gmbh | Method and device for selectively detecting ferromagnetic or superparamagnetic particles |
US8278918B2 (en) | 2010-10-07 | 2012-10-02 | Mettler-Toledo Safeline Limited | Method for operating of a metal detection system and metal detection system |
US8314713B2 (en) | 2010-10-07 | 2012-11-20 | Mettler-Toledo Safeline Limited | Method for monitoring the operation of a metal detection system and metal detection system |
US8587301B2 (en) | 2010-10-07 | 2013-11-19 | Mettler-Toledo Safeline Limited | Method for operating a metal detection system and metal detection system |
US9018935B2 (en) | 2011-09-19 | 2015-04-28 | Mettler-Toledo Safeline Limited | Method for operating a metal detection apparatus and apparatus |
Also Published As
Publication number | Publication date |
---|---|
SE7904329L (sv) | 1980-11-18 |
FR2456951A1 (fr) | 1980-12-12 |
CA1157096A (en) | 1983-11-15 |
CH660799A5 (en) | 1987-06-15 |
DE2837265C2 (de) | 1987-02-05 |
FR2456951B1 (ko) | 1985-04-19 |
NL7903965A (nl) | 1980-11-25 |
DE2837265A1 (de) | 1980-03-06 |
SE440832B (sv) | 1985-08-19 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PCNP | Patent ceased through non-payment of renewal fee |