ES2006772A6 - Metal detector - Google Patents

Metal detector

Info

Publication number
ES2006772A6
ES2006772A6 ES8701852A ES8701852A ES2006772A6 ES 2006772 A6 ES2006772 A6 ES 2006772A6 ES 8701852 A ES8701852 A ES 8701852A ES 8701852 A ES8701852 A ES 8701852A ES 2006772 A6 ES2006772 A6 ES 2006772A6
Authority
ES
Spain
Prior art keywords
logic unit
metal detector
windings
groups
processing logic
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
Application number
ES8701852A
Other languages
Spanish (es)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of ES2006772A6 publication Critical patent/ES2006772A6/en
Expired legal-status Critical Current

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)

Abstract

A metal detector is proposed which magnetically sweeps over the volume of a passage track and is characterised by comprising in combination: - a plurality of separate electric transmitter windings (2, 3), - one or more electric receiver windings (8, 9), - two groups of phase-change devices ( DELTA PHI 1, DELTA PHI 2) for changing the phase shift between the supply currents, - a processing logic unit (12) for comparing the signals induced in the receiver windings with reference signals, - an electronics group (7) for controlling the change groups for the said phases as well as the processing logic unit (12), - a signal transmitter group (18) which is actuated by the logic unit (12). The metal detector is used to locate metals, in particular weapons, in passage tracks which are provided with a detector according to the invention.
ES8701852A 1986-12-10 1987-06-24 Metal detector Expired ES2006772A6 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT8601237A IT1214993B (en) 1986-12-10 1986-12-10 METAL DETECTOR WITH MAGNETIC SCAN OF THE TRANSIT VOLUME.

Publications (1)

Publication Number Publication Date
ES2006772A6 true ES2006772A6 (en) 1989-05-16

Family

ID=11101162

Family Applications (1)

Application Number Title Priority Date Filing Date
ES8701852A Expired ES2006772A6 (en) 1986-12-10 1987-06-24 Metal detector

Country Status (4)

Country Link
DE (1) DE3737774A1 (en)
ES (1) ES2006772A6 (en)
FR (1) FR2608286B1 (en)
IT (1) IT1214993B (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1265721B1 (en) * 1992-11-11 1996-12-02 Alessandro Manneschi METAL DETECTOR WITH MULTIPOLAR WINDINGS WITH THE ELIMINATION OF NEUTRALIZING EFFECTS
IT1260208B (en) * 1992-11-19 1996-04-02 Giovanni Manneschi PERFECTED METAL DETECTOR
ES2070694B1 (en) * 1992-11-27 1997-02-01 Alessandro Manneschi METAL DETECTOR WITH FALSE ELECTROMAGNETIC TRANSDUCERS AND CORRECTOR CIRCUIT OF MALFUNCTIONS.
FR2698968B1 (en) * 1992-12-04 1995-01-20 Alessandro Manneschi Metal detector with offset electromagnetic transducers and non-uniformity correction circuit.
US7352180B2 (en) 2003-10-02 2008-04-01 Alessandro Manneschi Magnetic resonance detector for detecting non-authorized materials in footwear
ES2476025T3 (en) 2005-08-04 2014-07-11 Alessandro Manneschi Metal detector
EP1750148A1 (en) * 2005-08-04 2007-02-07 Giovanni Manneschi Metal detector presenting high performance
DE102022208758A1 (en) * 2022-08-24 2024-02-29 Institut Dr. Foerster Gmbh & Co. Kg Metal detector and method for detecting metals in conveyed goods

Family Cites Families (5)

* 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
NL7702946A (en) * 1976-04-03 1977-10-05 Bizerba Werke Kraut Kg Wilh METHOD AND ARRANGEMENT FOR DETERMINING THE PRESENCE OF OBJECTS IN A PARTICULAR CONTROL AREA, IN PARTICULAR FOR PREVENTION OF SHOP THEFT.
GB2110825B (en) * 1981-11-06 1986-04-30 Outokumpu Oy Apparatus for detecting metal objects
DE3406736A1 (en) * 1984-02-24 1985-08-29 Kernforschungszentrum Karlsruhe Gmbh, 7500 Karlsruhe Metal-detection system
US4634975A (en) * 1984-09-17 1987-01-06 Progressive Dynamics, Inc. Method and apparatus for producing electromagnetic surveillance fields

Also Published As

Publication number Publication date
FR2608286B1 (en) 1990-08-10
FR2608286A1 (en) 1988-06-17
IT8601237A0 (en) 1986-12-10
DE3737774A1 (en) 1988-06-23
IT1214993B (en) 1990-01-31
DE3737774C2 (en) 1989-08-31

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Legal Events

Date Code Title Description
FD1A Patent lapsed

Effective date: 20000301