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WO2015147701A1 - Capteur de détecteur de métaux et détecteur de métaux - Google Patents

Capteur de détecteur de métaux et détecteur de métaux Download PDF

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Publication number
WO2015147701A1
WO2015147701A1 PCT/RU2015/000172 RU2015000172W WO2015147701A1 WO 2015147701 A1 WO2015147701 A1 WO 2015147701A1 RU 2015000172 W RU2015000172 W RU 2015000172W WO 2015147701 A1 WO2015147701 A1 WO 2015147701A1
Authority
WO
WIPO (PCT)
Prior art keywords
coils
coil
block
metal detector
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.)
Ceased
Application number
PCT/RU2015/000172
Other languages
English (en)
Russian (ru)
Inventor
Виктор Олегович АРБУЗОВ
Геннадий Львович ПОНОМАРЕВ
Алексей Сергеевич РЫБАКОВ
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
Priority claimed from RU2014111228/28A external-priority patent/RU2569488C2/ru
Priority claimed from RU2014111235/28A external-priority patent/RU2569489C2/ru
Application filed by Individual filed Critical Individual
Publication of WO2015147701A1 publication Critical patent/WO2015147701A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V20/00—Geomodelling in general
    • 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
    • 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

Definitions

  • the invention relates to the field of introscopy, more specifically to metal detectors, and can be used to solve the problem of detecting metal objects located in various covering environments, in particular, in weakly and highly mineralized soil, walls of buildings, etc.
  • the metal detector sensor known from D1 contains two different-sized blocks of coaxial coils, each of which consists of two series-connected transmitting (exciting) coils and one receiving (signal) coil. Transmitting coils are turned on in counter, which ensures the achievement of the induction balance of the minimum flux of induction through the receiving coils.
  • the well-known metal detector sensor is designed to work in dual-frequency mode.
  • a disadvantage of the metal detector sensor known from D1 is the complexity and low-tech design.
  • the metal detector sensor known from D2 has an annular housing with connecting ribs located along its middle and transverse axes and a transmitting coil wrapped around one or more receiving coils.
  • the housing has four straight sides of the same length and arranged in pairs in parallel. Decoupling between the transmission and reception channels is ensured by the winding of the receiving coil (receiving coils) in a D-shape with a straight side along body center.
  • the disadvantage of the metal detector sensor known from D2 is the complexity and low-tech of its design, as well as the inability to operate the metal detector sensor in different modes.
  • D3 Known metal detector and metal detector described in the application US2003107377 A1, G01V3 / 10, G01V3 / 11, 06/12/2003 (UZMAN MUSTAFA) (D3).
  • the metal detector sensor known from D3 is made D-shaped and has a coil consisting of transmitting and receiving windings located on a metal substrate, and the transmitting winding is located relative to the receiving winding so that the magnetic field generated by the transmitting winding induces only a very small voltage in the receiving winding.
  • the disadvantage of the metal detector sensor known from D3 is the complexity and low-tech of its design, as well as the inability to operate the metal detector sensor in different modes.
  • the metal detector sensor known from D4 comprises a coil unit consisting of D-shaped receiving and transmitting coils. The coils are located on the same plane and are aligned so that the induction flux of the transmitting coil passing through the winding of the receiving coil is minimal, as well as the output voltage on the winding of the receiving coil.
  • a disadvantage of the metal detector sensor known from D4 is the complexity and low-tech of its design, as well as the inability to operate the metal detector sensor in different modes.
  • the metal detector sensor known from D4 can be adopted as a prototype of the inventive metal detector sensor.
  • the metal detector known from D1 can be adopted as a prototype of the claimed metal detector.
  • the tasks of searching for metal objects are quite diverse and include both the need to implement in-depth detection of objects and the possibility of realizing the separation of closely spaced metal objects.
  • the solution to these problems today requires a set of multidimensional sensors in the metal detector. So, to increase the depth of search, large-sized sensors are required, and for better separation of closely spaced metal objects, small-sized sensors are used.
  • the aim of the present invention is to provide a metal detector and metal detector, which would have improved properties and could be used to solve a wide range of search tasks.
  • the technical result achieved by the implementation of the present invention is to simplify the design of the sensor of the metal detector, increase the information content of the search for metal objects, as well as expanding the range of search tasks solved with the help of a metal detector containing the claimed sensor.
  • the sensor of the metal detector contains a first block of coils, consisting of the first
  • the size of the alignment zone of the first drive coil and the first signal coil is selected such that a minimum induction flux through the first signal coil further comprises a second block of coils consisting of a second drive coil driven by a second drive frequency, and a second a swarm of a signal coil, said second excitation coil and a second signal coil being located on the same plane and partially aligned, and the size of the alignment zone of the second exciting coil and the second signal coil is selected so that a minimum induction flow through the second signal coil is ensured.
  • FIG. 1 illustrates an exemplary circuit diagram of a metal detector, which may include a metal detector sensor according to any one of the embodiments of the present invention.
  • FIG. 2 illustrates an exemplary spatial arrangement of the detector coils of a metal detector relative to each other.
  • FIG. 3 illustrates an exemplary spatial arrangement of coil units of a metal detector sensor relative to each other.
  • a metal detector sensor comprising a first coil unit consisting of a first drive coil driven by a first drive frequency and a first signal coil, said first drive coil and a first signal coil being located on the same plane and partially aligned, wherein the size of the zone of the combination of the first exciting coil and the first signal coil is selected so as to ensure a minimum flux of induction h
  • the first signal coil further comprises a second block of coils, consisting of a second excitation coil excited by a second excitation frequency, and a second signal coil, said second excitation coil and a second signal coil being located on the same plane and partially aligned, wherein the size of the alignment zone of the second exciting coils and a second signal coil is selected so that a minimum induction flow through the second signal coil is ensured.
  • the metal detector of the first embodiment of the present invention may also be provided, characterized in that, in particular, the first excitation frequency and the second excitation frequency are not equal; the geometric dimensions and shape of the first block of coils and the second block of coils and the spatial arrangement of the first block of coils and the second block of coils with respect to each other, as well as the geometric dimensions and shape of the coils and their spatial location along in relation to each other, are selected such that a minimum total output signal is provided; the geometric dimensions of the first block of coils and the second block of coils are not equal; the geometric shape of the first drive coil is similar to the geometric shape of the first signal coil, and the geometric shape of the second drive coil is similar to the geometric shape of the second signal coil; the relative spatial arrangement of the coils of the second block of coils is similar to the relative spatial arrangement of the coils of the first block of coils; the planes of the first coil block and the second coil block are superimposed on one another; the zone of combining coils of the second block of coils is completely
  • a metal detector comprising a generator, a metal detector sensor, a microprocessor and an indication unit, the metal detector sensor comprising a first coil unit consisting of a first excitation coil excited by a first excitation frequency and a first signal coil, moreover, the aforementioned first exciting coil and the first signal coil are located on the same plane and partially aligned, moreover, The first excitation coil and the first signal coil are selected such that a minimum induction flow through the first signal coil is ensured, and a second coil unit consisting of a second excitation coil excited by a second excitation frequency and a second signal coil, the second excitation coil and the second signal the coil is located on the same plane and partially aligned, and the size of the zone of matching the second exciting
  • b coils and a second signal coil is selected so that a minimum induction flow through the second signal coil is ensured.
  • a metal detector may also be provided in the sensor of which, in particular, the first excitation frequency and the second excitation frequency are not equal; the geometric dimensions and shape of the first block of coils and the second block of coils and the spatial arrangement of the first block of coils and the second block of coils with respect to each other, as well as the geometric dimensions and shape of the coils and their spatial arrangement with respect to each other, are selected so as to ensure minimum total output signal; the geometric dimensions of the first block of coils and the second block of coils are not equal; the geometric shape of the first drive coil is similar to the geometric shape of the first signal coil, and the geometric shape of the second drive coil is similar to the geometric shape of the second signal coil; the relative spatial arrangement of the coils of the second block of coils is similar to the relative spatial arrangement of the coils of the first block of coils; the planes of the first coil block and the second coil block are superimposed on one another; the zone of combining coils of the second block of coils is completely superimposed on the zone of combining coils
  • FIG. 1 by way of example, but not limitation, an exemplary circuit diagram of the inventive metal detector is shown, in which a metal detector sensor according to any of the embodiments of the present invention related to the metal detector sensor can be used.
  • the detector 100 includes a generator 1010, preferably controlled by a microprocessor 1090 and connected by a first drive circuit 1020 containing a first capacitor 1021, to a first drive coil of a first block of coils 1041 of the detector 1040; and connected by a second excitation circuit 1030 containing a second capacitor 1031 with a second excitation coil of a second block of coils 1042 of the metal detector sensor 1040.
  • capacitors 1021 and 1031 included in the excitation circuit are introduced into the circuit, which allow achieving a consistent resonance in the first exciting circuit 1020 and a second drive circuit 1030 at a first drive frequency (F1) and a second drive frequency (F2), respectively.
  • the first signal coil of the first block 1041 of the detector 1040 sensor coils is connected by the first signal circuit 1050 containing the first shunt capacitor 1051 to the first quadrature component extraction unit (BVC) 1070.
  • the second signal coil of the second block of coil 1042 of the metal detector sensor 1040 is connected by a second signal circuit 1060 containing the second shunt capacitor 10 (31 with the second BVKS 1080.
  • the shunt capacitors 1051 and 1061 allow you to achieve a serial resonance in the first signal circuit 1050 and the second signal circuit 1060 at the first excitation frequency and the second excitation frequency, respectively.
  • the first and second stresses are complex quantities - vectors - which in Cartesian coordinates can be represented through projections (quadrature components).
  • Signals with the values of the first and second voltages are fed to the inputs of the first BVKS 1070 and the second BVKS 1080, respectively.
  • the first (XI) and second (Y1) output signals of the first BVKS 1070 and the first (X2) and second (Y2) output signals of the second BVKS 1080 are signals directly proportional to the quadrature components of the first and second voltages in the signal circuits 1050 and 1060, respectively.
  • These signals are fed to the inputs of the microprocessor 1090, where they are processed, in particular, in accordance with the algorithms described in D1.
  • Display unit 1091 when This is configured to output the processed signals in the form of hodographs of the first and second voltages.
  • the display unit may be any suitable unit for outputting the hodographs of the first and second voltage unit, in particular, a unit comprising, without limitation, a liquid crystal display, a touch display, a monochrome display, and the like.
  • the display unit may include output modules such as a speaker, audio output, headphones, etc., designed to supply an audio signal in case of violation of the induction balance in the sensor.
  • the blocks of coils 1041 and 1042 of the sensor of the metal detector 1040 can be made of geometrically different sizes, which, in fact, allows each of the blocks to be used as an independent sensor of the metal detector.
  • the drive current of the first drive circuit 1020 can be turned off, thereby disconnecting the first block of coils 1041.
  • the first block of coils 1042 is a larger coil block, then obtained by disconnecting the first block of coils
  • the 1041 metal detector sensor can be used to better separate metal objects and search in areas with a large amount of metal debris or in highly mineralized soils.
  • the first block of coils 1042 on the contrary, is a block of coils of a smaller size, turning it off will allow for an in-depth search of objects suitable for searching in weakly mineralized soils, or when increased identification capabilities of the metal detector are not required, which, as already noted, are realized by processing all signals from the sensor of the metal detector.
  • turning off one of the coil blocks 1041, 1042 allows you to save energy and increase the battery life of the detector.
  • FIG. 2 and 3 shows an approximate spatial arrangement of the sensor coils
  • the drive coils 2010, 2020 and the signal coils 2030 and 2040 are D-shaped, and their relative positions are similar.
  • the geometric dimensions of the second block of coils 1042 formed by the coils 2020, 2040 are smaller than the geometric dimensions of the first block of coils 1041 formed by the coils 2010, 2030.
  • the registration zone 2060 formed by the coils 2020, 2040 is completely superimposed on the registration zone 2050 formed by the coils 2010, 2030. So from FIG. 2 and 3, it follows that the plane of the second exciting coil 2020 is completely superimposed on the plane of the first exciting coil 2010, and the plane of the second signal coil 2040 is completely superimposed on the plane of the first signal coil 2030. Ensuring such a combination of coils 2010, 2020, 2030, 2040 allows to achieve minimal flows induction through signal coils 2020, 2040, due to which the induction balance in the sensor of the metal detector 1040 and the minimum total output signal are ensured.

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  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Remote Sensing (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Geophysics (AREA)
  • Electromagnetism (AREA)
  • Environmental & Geological Engineering (AREA)
  • Geology (AREA)
  • Geophysics And Detection Of Objects (AREA)
  • Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)

Abstract

L'invention se rapporte au domaine de l'introscopie et, plus précisément, des détecteurs de métaux, et peut être utilisée afin de découvrir des objets métalliques se trouvant dans divers milieux cachés, notamment des sols faiblement ou fortement minéralisés, des murs de constructions, etc.
PCT/RU2015/000172 2014-03-25 2015-03-25 Capteur de détecteur de métaux et détecteur de métaux Ceased WO2015147701A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
RU2014111228 2014-03-25
RU2014111235 2014-03-25
RU2014111228/28A RU2569488C2 (ru) 2014-03-25 2014-03-25 Датчик металлоискателя
RU2014111235/28A RU2569489C2 (ru) 2014-03-25 2014-03-25 Металлоискатель

Publications (1)

Publication Number Publication Date
WO2015147701A1 true WO2015147701A1 (fr) 2015-10-01

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PCT/RU2015/000172 Ceased WO2015147701A1 (fr) 2014-03-25 2015-03-25 Capteur de détecteur de métaux et détecteur de métaux

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3872380A (en) * 1974-01-02 1975-03-18 Robert F Gardiner Metal detector distinguishing between different metals by using a bias circuit actuated by the phase shifts caused by the metals
US20030160617A1 (en) * 2002-02-11 2003-08-28 Rowan Mark D. Metal detector employing static discrimination
RU2216028C2 (ru) * 2000-11-20 2003-11-10 Лубов Валерий Павлович Металлоискатель
RU2360268C1 (ru) * 2008-02-29 2009-06-27 Виктор Олегович Арбузов Вихретоковое устройство

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3872380A (en) * 1974-01-02 1975-03-18 Robert F Gardiner Metal detector distinguishing between different metals by using a bias circuit actuated by the phase shifts caused by the metals
RU2216028C2 (ru) * 2000-11-20 2003-11-10 Лубов Валерий Павлович Металлоискатель
US20030160617A1 (en) * 2002-02-11 2003-08-28 Rowan Mark D. Metal detector employing static discrimination
RU2360268C1 (ru) * 2008-02-29 2009-06-27 Виктор Олегович Арбузов Вихретоковое устройство

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