IT1265721B1 - Metal detector ad avvolgimenti multipolari con l'eliminazione di effetti neutralizzanti - Google Patents

Metal detector ad avvolgimenti multipolari con l'eliminazione di effetti neutralizzanti

Info

Publication number
IT1265721B1
IT1265721B1 IT92AR000026A ITAR920026A IT1265721B1 IT 1265721 B1 IT1265721 B1 IT 1265721B1 IT 92AR000026 A IT92AR000026 A IT 92AR000026A IT AR920026 A ITAR920026 A IT AR920026A IT 1265721 B1 IT1265721 B1 IT 1265721B1
Authority
IT
Italy
Prior art keywords
metal detector
elimination
windings
multipolar
neutralizing effects
Prior art date
Application number
IT92AR000026A
Other languages
English (en)
Inventor
Alessandro Manneschi
Original Assignee
Alessandro Manneschi
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Alessandro Manneschi filed Critical Alessandro Manneschi
Priority to IT92AR000026A priority Critical patent/IT1265721B1/it
Publication of ITAR920026A0 publication Critical patent/ITAR920026A0/it
Priority to US08/049,703 priority patent/US5498959A/en
Priority to ES09301155A priority patent/ES2074940B1/es
Priority to FR9309601A priority patent/FR2697919B1/fr
Priority to DE4338436A priority patent/DE4338436C2/de
Publication of ITAR920026A1 publication Critical patent/ITAR920026A1/it
Application granted granted Critical
Publication of IT1265721B1 publication Critical patent/IT1265721B1/it

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

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)
  • Other Investigation Or Analysis Of Materials By Electrical Means (AREA)

Abstract

L'invenzione consiste in un Metal Detector con avvolgimenti del tipo multipolare, comprendente due o più coppie di avvolgimenti trasmettitori-ricevitori, fra loro incrociati o non, caratterizzate da numeri di poli fra loro diversi in modo tale che le differenti coppie Tx Rx abbiano differenti passi "d" fra linee che, percorse simultaneamente da masse metalliche, diano origine a variazioni di segnali indotti pressocché uguali ed opposte.
IT92AR000026A 1992-11-11 1992-11-11 Metal detector ad avvolgimenti multipolari con l'eliminazione di effetti neutralizzanti IT1265721B1 (it)

Priority Applications (5)

Application Number Priority Date Filing Date Title
IT92AR000026A IT1265721B1 (it) 1992-11-11 1992-11-11 Metal detector ad avvolgimenti multipolari con l'eliminazione di effetti neutralizzanti
US08/049,703 US5498959A (en) 1992-11-11 1993-04-20 Metal detector with multipolar windings shaped so as to eliminate the neutralizing effects when several metal masses are passing through simultaneously
ES09301155A ES2074940B1 (es) 1992-11-11 1993-05-27 Detector de metales de arrollamientos multipolares con eliminacion de efectos neutralizantes.
FR9309601A FR2697919B1 (fr) 1992-11-11 1993-08-04 Detecteur de metaux a enroulements multipolaires avec elimination des effets neutralisants.
DE4338436A DE4338436C2 (de) 1992-11-11 1993-11-10 Metalldetektor mit mehrpoligen Wicklungen

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT92AR000026A IT1265721B1 (it) 1992-11-11 1992-11-11 Metal detector ad avvolgimenti multipolari con l'eliminazione di effetti neutralizzanti

Publications (3)

Publication Number Publication Date
ITAR920026A0 ITAR920026A0 (it) 1992-11-11
ITAR920026A1 ITAR920026A1 (it) 1994-05-12
IT1265721B1 true IT1265721B1 (it) 1996-12-02

Family

ID=11334734

Family Applications (1)

Application Number Title Priority Date Filing Date
IT92AR000026A IT1265721B1 (it) 1992-11-11 1992-11-11 Metal detector ad avvolgimenti multipolari con l'eliminazione di effetti neutralizzanti

Country Status (5)

Country Link
US (1) US5498959A (it)
DE (1) DE4338436C2 (it)
ES (1) ES2074940B1 (it)
FR (1) FR2697919B1 (it)
IT (1) IT1265721B1 (it)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19606675A1 (de) * 1996-02-22 1997-08-28 Siemens Ag Verfahren und Vorrichtung zum Detektieren eines Objekts in einem zu überwachenden Bereich
KR100228251B1 (ko) * 1997-12-20 1999-11-01 박병용 권총류 탐지시스템
AU3399700A (en) * 1999-03-03 2000-09-21 Potchefstroom University For Christian Higher Education Foreign material sensor utilizing a multipole magnetic field
US6362739B1 (en) 1999-09-22 2002-03-26 Garry L. Burton Passive security device for detecting ferromagnetic objects
ITAR20000040A1 (it) * 2000-09-08 2002-03-08 Alessandro Manneschi Trasduttore lettore di transponder per il controllo dei passaggi
US7352180B2 (en) 2003-10-02 2008-04-01 Alessandro Manneschi Magnetic resonance detector for detecting non-authorized materials in footwear
FR2888340B1 (fr) 2005-07-11 2007-10-19 Alessandro Manneschi Dispositif de test pour portique detecteur de metaux
EP1750147B1 (en) 2005-08-04 2014-04-09 Alessandro Manneschi Metal detector
GB2441346B (en) * 2006-09-01 2011-04-13 Qinetiq Ltd Metal object detecting apparatus
CA3103944C (en) 2018-06-20 2023-08-01 Eriez Manufacturing Co. Metal detector coil configuration to eliminate orientation effect

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3758849A (en) * 1972-03-31 1973-09-11 Sperry Rand Corp Metal detector system having identical balanced field coil system on opposite sides of a detection zone
US4063230A (en) * 1975-06-12 1977-12-13 The Magnavox Company Balanced field theft detection system
US4135183A (en) * 1977-05-24 1979-01-16 Minnesota Mining And Manufacturing Company Antipilferage system utilizing "figure-8" shaped field producing and detector coils
US4344074A (en) * 1981-04-02 1982-08-10 Sperry Corporation Magnetic field producing apparatus
GB2110825B (en) * 1981-11-06 1986-04-30 Outokumpu Oy Apparatus for detecting metal objects
US4769631A (en) * 1986-06-30 1988-09-06 Sensormatic Electronics Corporation Method, system and apparatus for magnetic surveillance of articles
IT1214991B (it) * 1986-12-03 1990-01-31 Manneschi Giovanni Colonnetta con pluralita' di avvolgimenti.
IT1214993B (it) * 1986-12-10 1990-01-31 Manneschi Alessandro Rivelatore di metalli con scansione magnetica del volume di transito.
US4866424A (en) * 1988-01-11 1989-09-12 Eg&G Astrophysics Research Corporation Metal detector coil
FI84209C (fi) * 1988-11-01 1991-10-25 Outokumpu Oy Metalldetektor.
IT1242640B (it) * 1990-12-06 1994-05-16 Saima Sicurezza Spa Cabina con metal detector a tutela di accessi con ingresso di ampiezza variabile
IT1249278B (it) * 1991-06-06 1995-02-21 Alessandro Manneschi Metal detector con trasduttori elettromagnetici sfalsati e circuito correttore delle disuniformita'
DE4240921C1 (de) * 1992-12-04 1994-05-11 Alessandro Manneschi Metalldetektor

Also Published As

Publication number Publication date
ES2074940A2 (es) 1995-09-16
FR2697919A1 (fr) 1994-05-13
ES2074940B1 (es) 1997-07-01
DE4338436C2 (de) 1996-03-14
ES2074940R (it) 1996-11-16
FR2697919B1 (fr) 1996-01-05
DE4338436A1 (de) 1994-06-01
ITAR920026A1 (it) 1994-05-12
US5498959A (en) 1996-03-12
ITAR920026A0 (it) 1992-11-11

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Legal Events

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0001 Granted
TA Fee payment date (situation as of event date), data collected since 19931001

Effective date: 19981104