WO2017015730A1 - Bobine d'exploration pour détecteur de métaux - Google Patents

Bobine d'exploration pour détecteur de métaux Download PDF

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Publication number
WO2017015730A1
WO2017015730A1 PCT/BG2015/000035 BG2015000035W WO2017015730A1 WO 2017015730 A1 WO2017015730 A1 WO 2017015730A1 BG 2015000035 W BG2015000035 W BG 2015000035W WO 2017015730 A1 WO2017015730 A1 WO 2017015730A1
Authority
WO
WIPO (PCT)
Prior art keywords
coils
search coil
metal detector
accordance
windings
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.)
Ceased
Application number
PCT/BG2015/000035
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English (en)
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.)
Detech Ltd
Original Assignee
Detech Ltd
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Filing date
Publication date
Application filed by Detech Ltd filed Critical Detech Ltd
Publication of WO2017015730A1 publication Critical patent/WO2017015730A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • G01V3/15—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation specially adapted for use during transport, e.g. by a person, vehicle or boat
    • G01V3/17—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation specially adapted for use during transport, e.g. by a person, vehicle or boat operating with electromagnetic waves

Definitions

  • the metal detector search coil is applied in the archaeology, geology, construction, in the military and police practice
  • the search coii is appropriate for registering all kinds of metal objects, ferrous and non-ferrous metals, no matter their depth and sizes.
  • search coils with diameters lower than 250 mm have good sensitivity to metallic objects with diameter l were than 20 mm, but are not so sensitive and can not reach the necessary detection depth for bigger than 20 mm sized metallic objects.
  • search coils with larger than 250 mm diameters have good sensitivity to metallic objects with larger than 20 mm diameters, but differ with low sensitivity to the small, less than 20 mm metal l ic objects.
  • the windings of the flat coil are wound in a spiral, in one plane, thus ensuring greater difference of potential between ⁇ adjacent turns or convolutions, and since the energy is stored in the coil, considering the latter as a condenser, is proportional to the square of the potential difference between two adjacent windings. Due to the described positioning of the windings are created conditions for increasing and correct distribution of the potential between two adjacent windings, as the increase of the capacity of the flat coil is due to .;he increased potential difference between the spirally wound in one plane windings.
  • the aim of the invention is to offer a search coil for metal detector, showing up increased sensitivity to registering metal objects of different sizes and increased depth of detection of the metallic objects.
  • Another task of the useful model is the coiis in the metal detector's search coil to be formed and positioned in a way, determining technological and economical manufacturing by decreasing the number of technological operations and the expenses, to be distinguished with easy maintenance and decreased total weight of the search coil.
  • the windings of the coils are made as flat coils, with windings, positioned in spiral, in one plane, and the two coils are situated in two parallel planes at 0 to 30mm distance between them.
  • the windings of the coils are situated in different planes.
  • the coils are positioned at an angle of 1 - 10 Degrees towards me horizontal plane. [0018] It is appropriate the windings of the coils to be at 1 to 10 mm distance one from another.
  • the coils are made from a conductor with 0.02 to 5.00 mm thickness.
  • the latter are made from a multicore conductor with 0.02 to 5.00 mm thickness.
  • the coils consist of a basis, representing a layer of Insulation material., and covered with a layer of electro-conductive material with outlined on it windings in spiral form.
  • the coils of the search coil are made in a D form.
  • the coils of the search coil are made with ova; form.
  • search coil could be made in a way, that the form of the housing is the same as the form of the coils.
  • the advantages of the search coil for meiai detector according tc the useful model are that it is distinguished with increased sensitivity regarding metallic objects with different sizes, and their search is effective at greater depths in comparison with analogical constructions of search coils with two coils.
  • the increased sensitivity is due to the flat coils used, with windings wound in spiral in one plane, and with that practically antennae is obtained, formed by numerous, decreasing by size antennas, which makes the search coil equally sensitive to the small, and to bigger sized metallic objects iOo.
  • the sensitivity Is improved additionally by positioning the flat coils at a distance one from the other, including at an angle one towards the other, which ensures correct distribution of the electromagnetic fields of each winding of the transmitter and receiver coils, and also improved is their mutual balancing and the efficiency coefficient of the search coil.
  • Another advantage of the utility modei is thai the described way of positioning the windings - in spiral, in one plane - allows the realization of coils with a thickness equal to that of the section of the conductor they are made from.
  • Fig. l general, axonometric view of housing of search coil of the prior state of the technology.
  • FIG. 2 - view from below of the housing from Fig. i with transmi tt and receiver coils put in it
  • Fig.3 - cross-section of the housing from Fig.2, with D-formed transmitter and receiver coils with square section of the windings put in in
  • Fig.4 view of a search coil for metal detector with two fiat, D-shaocd coils, with windings positioned in spiral in one plane.
  • Fig.5 cross-section of a search coil from Fig.4 with two fiat coils, positioned at a distance one from the other.
  • Fig.6 cross-section of a search coil from Fig. 4, with two flat coils, touching each other.
  • Fig. 7 cross-section of a search coil from Fig.4, with two fiat cons, positioned at an angle one from the other.
  • Fig.8 cross-section of a search coil, with coils, made from bilaterally conductive layer, with outlined windings, wound in spiral. Details description of the Invention
  • FIG.4 One preferred exemplary implementation of the search coil in accordance with the useful model is shown on fig.4 - it consists of housing 1 , en the lower surface of which are put flat transmitter 2 and receiver 3 eoiis.
  • the Jim coils are made of spirally positioned windings 4, oriented in one plane, where the transmitter 2 and the receiver 3 coils are situated ax a distance one from the other.
  • FIG. 4 One preferred exemplary implementation of the search coi l I n accordance with the useful model is shown on fig. 4, which consists of housing 1 which are put flat transmitter 2 and receiver 3 coils.
  • the housing is with a circle form, and is made of polymer.
  • Each of the coils 2 and 3 is made in D form., with spirally positioned windings 4.
  • the windings 4 of the flat coils are made of ms-hated, multi-core conductor, with 0.5mm diameter, as all ihe windings 4 of " me coils 2 and 3 are wound closely, with no interval between ih m, and lie in one plane.
  • the transmitter 2 and the receiver 3 coils lie in parallel planes, w hich are at 10 mm distance one from the other.
  • the search coil consists of housing 1 , in which are placed transmitter 2 and receiver 3 coils (Fig.6).
  • the housing 1 is made of polymer with a circle form.
  • Each of the coils 2 and 3 is made with an oval form, for example ellipse, with spirally positioned windings 4.
  • the windings 4 are made o single-core conductor, with 1 .2 mm diameter, and all the windings 4 of the flat coils 2 and 3 lie on one plane.
  • the transmitter 2 and the receiver 3 coils lie in parallel planes, with no interval between them, the coils are touching one another, fixed in inductive balance, i.e. mutually balanced.
  • the search coil consists of housing i . in which are placed transmitter 2 and receiver 3 coils.
  • the housing is cvah made c: polymer.
  • Each of coils 2 and 3 is made in a circle form, wkh spirally positioned windings 4.
  • the windings 4 are made of single-core conductor, with 1 .5 mm diameter, and all windings 4 of coils 2 and 3 lie in one plane.
  • Tne oar Transmitter 2 and receiver 3 coils are oriented at 5° angle towards the lower surface of the housing 1 .
  • the search coil consists of housing 1 , in which are placed -transmitter 2 and receiver 3 coils.
  • the housing 1 is made of polymer, with form, for example ellipse.
  • Each of the coils 2 and 3 is made in ova! form, w ith mlmi o positioned windings 4.
  • the windings 4 are made of multi-core insulated eonoaetor, with 1.8 mm diameter, and all windings 4 of coils 2 and 3 lie in one plane.
  • the transmitter 2 and the receiver 3 coils lie in parallel planes, positioned at 28 m distance one from the other, fixed in inductive balance, i.e. mutually balanced.
  • Example 5 Example 5
  • the search coil consists of housing 1 , in w hich are placed transmitter 2 and receiver 3 coils.
  • the housing 1 is made from polymer in circular farm
  • Each of the coils 2 and 3 is made in D shape, with a base of insulation malerial, covered with a layer of electro-conductive material, in a spiral form, ail windings a of xhe coils 2 and 3 are formed closely, without interval between them, and lie in one plane.
  • the transmitter 2 and receiver 3 lie in parallel planes, at a distance oi ' 2u mm one from the other.
  • the flat coils 2 and 3 are made in the following way - on a bilaterally foiled conductive material, for example textont m .: emsmg are made spirally wound transmitter 2 and receiver 3 coils (Fig. 81 respectively cn the one side of the textolit is made the transmitter 2 coi l, and on the oth r side of the textolit is made the receiver coil 3.

Landscapes

  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Geology (AREA)
  • Remote Sensing (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Geophysics (AREA)
  • Geophysics And Detection Of Objects (AREA)

Abstract

L'invention concerne une bobine d'exploration pour détecteur de métaux appliquée en archéologie, en géologie, dans la construction, dans l'entraînement de l'armée et de la police. La bobine d'exploration se caractérise par une sensibilité accrue, en ce qu'elle est capable de trouver des objets métalliques de différentes tailles enfouis à une profondeur importante. La bobine d'exploration est simplifiée du point de vue technologique afin de se prêter à la production, avec une baisse des dépenses en matériaux. La bobine d'exploration pour détecteur de métaux est constituée d'un boîtier (1) dans lequel sont disposées de manière mutuellement équilibrée des bobines d'émetteur (2) et de récepteur (3). Les bobines 2 et 3 sont enroulées à partir de spires situées en spirale dans un plan 4, lesquelles pourraient être à proximité l'une de l'autre, sans intervalle entre elles, ou avec une distance de 0 à 10 mm entre les spires. Les bobines 2 et 3 sont placées à distance l'une de l'autre, en formant un angle par rapport à la surface inférieure du boîtier, ou se touchant l'une l'autre.
PCT/BG2015/000035 2015-07-29 2015-10-20 Bobine d'exploration pour détecteur de métaux Ceased WO2017015730A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BG00306315 2015-07-29
BGNO3063 2015-07-29

Publications (1)

Publication Number Publication Date
WO2017015730A1 true WO2017015730A1 (fr) 2017-02-02

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Family Applications (1)

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PCT/BG2015/000035 Ceased WO2017015730A1 (fr) 2015-07-29 2015-10-20 Bobine d'exploration pour détecteur de métaux

Country Status (1)

Country Link
WO (1) WO2017015730A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113341472A (zh) * 2021-04-29 2021-09-03 张磊 一种用于地下金属探测用手持金属探测器
WO2023193069A1 (fr) * 2022-04-03 2023-10-12 Detech Ltd Bobine pour détecteur de métal multifréquence
EP3724679B1 (fr) * 2017-12-15 2023-12-20 Alessandro Manneschi Detecteur double technologie a bobines transverses
FR3168300A1 (fr) * 2024-11-05 2026-05-08 Xplorer Structure d’antenne pour détecteur de métaux a mouvement avec bobines non coplanaire a balance d’induction

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4423377A (en) * 1980-11-12 1983-12-27 Garrett Electronics Compact metal detector of the balanced induction type
EP0654685A2 (fr) * 1993-11-18 1995-05-24 Vallon GmbH Dispositif et procédé pour la détection des objets métalliques
US5729143A (en) * 1996-06-03 1998-03-17 Zircon Corporation Metal detector with nulling of imbalance
DE10318350B3 (de) * 2003-04-23 2004-12-09 Werner Turck Gmbh & Co. Kg Induktiver Näherungsschalter
US20120049850A1 (en) * 2009-05-18 2012-03-01 Gerd Reime Metal detector

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4423377A (en) * 1980-11-12 1983-12-27 Garrett Electronics Compact metal detector of the balanced induction type
EP0654685A2 (fr) * 1993-11-18 1995-05-24 Vallon GmbH Dispositif et procédé pour la détection des objets métalliques
US5729143A (en) * 1996-06-03 1998-03-17 Zircon Corporation Metal detector with nulling of imbalance
DE10318350B3 (de) * 2003-04-23 2004-12-09 Werner Turck Gmbh & Co. Kg Induktiver Näherungsschalter
US20120049850A1 (en) * 2009-05-18 2012-03-01 Gerd Reime Metal detector

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3724679B1 (fr) * 2017-12-15 2023-12-20 Alessandro Manneschi Detecteur double technologie a bobines transverses
CN113341472A (zh) * 2021-04-29 2021-09-03 张磊 一种用于地下金属探测用手持金属探测器
CN113341472B (zh) * 2021-04-29 2023-12-15 内蒙古西金矿业有限公司 一种用于地下金属探测用手持金属探测器
WO2023193069A1 (fr) * 2022-04-03 2023-10-12 Detech Ltd Bobine pour détecteur de métal multifréquence
FR3168300A1 (fr) * 2024-11-05 2026-05-08 Xplorer Structure d’antenne pour détecteur de métaux a mouvement avec bobines non coplanaire a balance d’induction

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