WO2004106968A1 - Dispositif détecteur de matière - Google Patents

Dispositif détecteur de matière Download PDF

Info

Publication number
WO2004106968A1
WO2004106968A1 PCT/CH2004/000275 CH2004000275W WO2004106968A1 WO 2004106968 A1 WO2004106968 A1 WO 2004106968A1 CH 2004000275 W CH2004000275 W CH 2004000275W WO 2004106968 A1 WO2004106968 A1 WO 2004106968A1
Authority
WO
WIPO (PCT)
Prior art keywords
detector device
resonance
material detector
disc
disk
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/CH2004/000275
Other languages
German (de)
English (en)
Inventor
Siegfried Stauber
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 WO2004106968A1 publication Critical patent/WO2004106968A1/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
    • G01V3/00—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
    • G01V3/12—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with electromagnetic waves
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00

Definitions

  • the invention relates to a material detector device.
  • So-called magnetometers are known for detecting iron.
  • Metal detectors or so-called metal detectors are also available on the market.
  • the metal detectors available on the market usually work with coils, and these send out a signal in a certain direction and then measure the returning, reflected signal.
  • the devices mentioned have the disadvantage that they must be held directly over the object sought. With these devices, location from a greater distance is not possible. But even if the devices are held in the immediate vicinity next to instead of on or over the searched object, they do not show the desired object or the searched material.
  • the invention has for its object to provide a material detector device which is more versatile and in particular is able to find the material or object sought even over a greater distance.
  • the desired material can be scanned in terms of its specific width and length ratios, so that the dimensions of the material can be determined.
  • the device according to the invention it is possible to determine the position of the material sought even over a greater distance and to detect the radiation between electrically conductive, magnetic resonances. to measure nanzkörpem.
  • the parts of the search antenna polarization instrument specified in claim 1 form a resonant resonant circuit, the resonant disc forming the antenna representing the inductance L of the resonant circuit.
  • the antenna resonant disc of ferromagnetic material is prepared (such as dynamo sheet, Mumetall ®, permalloy, carbonyl iron or other soft magnetic material), the aforementioned increases inductance L of the resonance disc by the permeability as a material constant. This enables the resonant circuit to have a small capacitance for tuning. This makes it easier to eliminate interference frequencies and to maintain the resonance frequency.
  • the rotatable body forms the upper part of the search antenna polarization instrument and has a spirit level, preferably in the form of a circular bubble, on its upper side for vertical alignment of the instrument.
  • a spirit level preferably in the form of a circular bubble
  • the device according to the invention are preferably formed two pole resonance disc, the insulating layer and the mu-metal ® layer by means of these parts penetrating central screw, preferably a hollow screw with an internal tuning screw fastened to the printed circuit board.
  • penetrating central screw preferably a hollow screw with an internal tuning screw fastened to the printed circuit board.
  • the insulating layer is advantageously made of polycarbonate and the Metal ® layer is in the form of a magnetic lens.
  • Polycarbonate is a good insulator with a comparatively low weight.
  • the resonance disc is a transmitting and receiving antenna, by means of which a transit time measurement can be carried out, for example, for determining the distance, by superimposing a pulse on the signal emitted by the resonance disc and measuring the transit time of the pulse, i.e. the time until the pulse returns from the found material again at the sound disk has arrived.
  • the resonance disc is thus able to transmit and receive electrical signals in the sense of a double effect.
  • the resonance disk is hair-shaped or tubular, rectangular, rectangular-arch-shaped, lenticular, partially circular, arch-shaped, with or without one or more notches or from a combination of the aforementioned shapes and preferably has a bore. This means that a large number of resonance discs are available for practical applications, so that a suitable resonance disc can be selected for each application.
  • the one or more notches are shaped like a circular section.
  • the search antenna polarization instrument advantageously has a light-emitting diode, a connection for headphones or an electrical measuring device and / or a built-in loudspeaker. This allows the signals determined to be displayed particularly easily, and thus perceived optically or acoustically.
  • the signal received by the found material is designed and polarized in the form of a rotary shaft, preferably an edge rotary shaft, center rotary shaft or dimensional rotary shaft, preferably the diameter of the resonance disc or the wavelength of the signal or its fraction corresponds to ⁇ and 3, ⁇ 3/2 or ⁇ 3/4.
  • the diameter of the resonance disc can thus correspond to the wavelength of the signal received by the material found.
  • FIG. 1 shows a schematic front view of a material detector device
  • FIG. 2 shows a schematic side view of the material detector device according to FIG. 1;
  • FIG. 3 shows a schematic top view of the material detector device according to FIG. 1;
  • 5 - 17 are schematic representations of a resonance disk of the material detector device, predominantly each in a top view
  • FIG. 20 shows a section through the resonance disc according to FIG. 19;
  • Fig. 21 is a schematic plan view of the resonance disk called pinch
  • FIG. 22 shows a schematic, partial vertical section through the upper part of the material detector device according to another embodiment.
  • FIG. 23 shows a circuit diagram of a series resonant circuit used in the material detector device.
  • FIG. 1 to 3 different views of a material detector device 1 are shown schematically.
  • the material detector device 1 is shown in FIG. 1 in a front view, in FIG. 2 in a side view and in FIG. 3 in a top view.
  • the material detector device 1 has a search antenna polarization instrument 2.
  • This search antenna polarization instrument 2 has a rotatable body 3, which forms the upper part 4 of the search antenna polarization instrument.
  • the Rotatable body 3 sits on a base body 5.
  • Rotatable body 3 and base body 5 sit concentrically on one another and have a common longitudinal axis 6.
  • the rotatable body 3 On its upper side 7, the rotatable body 3 has a spirit level 8 which, according to a particularly preferred embodiment, is in the form of a circular bubble.
  • the bladder 9 is shown in a side view in FIGS. 1 and 2 and in a top view in FIG. 3.
  • the spirit level 8 is used in particular for the vertical alignment of the instrument 2, in which the longitudinal axis 6 is perpendicular to a floor, not shown in detail.
  • the rotatable body 3 also has a pointed downward, i.e. Mark 10 tapering toward base body 5, the lower tip of which ends at lower edge 11 of rotatable body 3.
  • a degree scale 13 On the upper edge 12 of the base body 5 there is a degree scale 13, that is to say as it were opposite the tip of the marking 10.
  • the degree scale 13 at the height of the longitudinal axis 6 shows the value 0 degrees.
  • the degree scale 13 Towards the left in FIG. 1, the degree scale 13 has a division between 0 and +90 degrees, on the right in FIG. 1 accordingly from 0 degrees to -90 degrees.
  • the left half in FIG. 1 can also be seen in the side view according to FIG. 2 of the material detector device 1. It is clear that the connecting line between the value +90 degrees on the degree scale 13 and the longitudinal axis 6 forms a right angle with the connecting line between the value 0 degrees on the degree scale 13 and the longitudinal axis 6.
  • the base body 5 also has a printed circuit board 14, which is only indicated by dash-dotted lines in FIG. 2, with a plurality of electronic elements 15 which are likewise only indicated by dash-dotted lines.
  • the printed circuit board 14 has a plurality of brackets 16, indicated by dash-dotted lines, which are connected to a 9 volt -Battery 17 are in contact.
  • the battery 17 has a housing (not shown in detail), preferably made of nickel, and is inserted from the outside into a recess 18 in the base body 5. As indicated in FIGS. 2 and 3, the outer end of the battery 17 projects outwards beyond the jacket-shaped outer contour 19 of the base body 5.
  • the outer contour 19 there is also a light-emitting diode 20 and a connection 21, for example for headphones or an electrical measuring device (not shown). Furthermore, a loudspeaker can be built into the base body (not shown). Light-emitting diode 20 and connection 21 and possibly speakers connected to the printed circuit board 14 and are located on that side of the printed circuit board which also has the aforementioned electronic elements 15. As illustrated in FIG. 3, the light-emitting diode 20 and the connection 21 lie on the side of the base body 5 opposite the battery 17.
  • search antenna polarization instrument 2 The more precise structure of the search antenna polarization instrument 2 can be seen in a partial vertical section from FIG. 4.
  • the rotatable body 3 has an inner shoulder 22 for receiving a magnetic disk 23, which is, for example, a plastoferrite magnet. With the aid of the magnetic disk 23, the polarization angle 24 can be set by rotating the rotatable body 3 and read off on the degree scale 13.
  • the base body 5 of the search antenna polarization instrument 2 has a resonance disk 25 forming an antenna, one side 26 of which, in FIG. 4 this is the upper side, is arranged facing the magnetic disk 23 of the rotatable body 3. Furthermore, the base body has an insulating layer 28 adjoining the opposite, other side 27 of the resonance disk 25, which is preferably made of polycarbonate. In addition, the base body 5 has a Mumetall ® layer 29 which adjoins the insulating layer 28 and which is preferably designed in the form of a so-called magnetic lens. Rotationally symmetrical magnetic fields, such as z. B. generated by current-carrying coils, act on charged particles, such as. B. electrons or ions that remain near the field axis, focusing.
  • the Mumetall ® layer 29 is a permalloy alloy made of 76% nickel, 17% iron, 5% copper, 2% chromium and at most 0.1% carbon.
  • resonant disc 26 and Mumetall ® layer 29 a capacitor 30, which electrically having the electronic elements 15 printed circuit board 14, respectively.
  • the electronic elements 15 are omitted in FIG. 4 for the sake of simplicity.
  • the preferably two-pole formed resonance plate 25, the insulating layer 28 and the mu-metal ® layer 29 are centrally by a screw 31, which is designed as a hollow screw, penetrated and fixed by a nut 32 on a L-shaped bracket 33 which receives the printed circuit board 14 and is electrically connected to it. Between the holder 33 and the insulating layer 28 there is also a rivet sleeve 34. Between the screw 31 and the cylindrical inner wall of the rivet sleeve 34 there is also a teflon sleeve 35. In addition, a teflon ring 36 extends between the nut 32 and the holder 33.
  • the Teflon sleeve 35 extends at least partially through the insulating layer 28 and through the Teflon ring 36.
  • the Teflon ring could also form a type of flange of the Teflon sleeve and be formed in one piece with the latter.
  • a so-called tuning screw 37 is screwed into the screw 31 from below, which is used to fine-tune the emitted and / or received signals.
  • the resonance disk 25 is a transmitting and receiving antenna, by means of which the distance, i.e. To determine the distance between the material detector device 1 and the found piece of material 46 shown schematically in FIG. 3, a transit time measurement can be carried out by superimposing a pulse on the signal emitted by the resonance disc 25 and the transit time of the pulse, i.e. the time is measured until the impulse coming back from the found material has reached the resonance disc again.
  • the resonance disk 25 is predominantly shown in a top view in FIGS. 5 to 17.
  • the resonance disk is preferably made of pure nickel. It is pointed out that, in particular in FIGS. 5 to 8, only the left half which is mirrored on a longitudinal axis 47 of the resonance disc 25 is shown in solid lines. The right, second half of these resonance disks is only shown in dashed lines in FIGS. 5 and 8.
  • all other embodiments of the resonance disc with the exception of the resonance discs shown in FIGS. 13, 16 and 17, and the resonance disc shown in FIGS. 19 to 21 can also be provided with a second half mirrored on the longitudinal axis.
  • the resonance disc is hair-shaped or L-shaped.
  • FIG. 6 shows a tubular design, while in FIG.
  • a rectangular resonance disc 25 is shown. It is clear that in relation to the shapes shown in FIGS. 5 and 6, the term resonance disk is not to be understood strictly literally and is to be interpreted to the extent that the shapes shown in the figures are also subsumed under it.
  • the resonance disc is shown in a side or front view.
  • the base surface 48 is a circular disc and the tube 49 has a cylindrical cross section.
  • the resonance disks 25 are approximately semi-circular, the angle 43 enclosed by the two legs 41 and 42 of each resonance disk 25 being 180 ° in the case of FIG. 11, approximately 171 ° in the case of FIG. 12 and 13 is approximately 189 °.
  • the resonance disks 25 are of arcuate design, a 90 ° bend 44 being provided in the embodiment shown in FIG. 14 and two 90 ° bends 44 being provided in FIG.
  • the resonance disc can have one or more notches 45. 16 and 17 there are two notches 45 lying diagonally opposite one another and in FIG. 17 four notches 45 lying opposite each other in pairs.
  • the resonance disk preferably has a central bore 64.
  • the notch or the plurality of notches is shaped like a circular section.
  • FIGS. 18 to 21 shows a plan view of a resonance disk 25 in the form of a so-called converging lens.
  • a resonance disk 25 in the form of a so-called converging lens.
  • the resonance disk 25 shown in FIGS. 19 to 21 is called pinch. It is roughly like the resonance disk shown in FIG. 12 including the right, mirrored half, not shown in FIG. 12, but is substantially thicker than that.
  • FIG. 19 shows a schematic front view
  • FIG. 20 shows a section through the resonance disc according to FIG. 19
  • FIG. 21 shows a top view of such a resonance disc.
  • the resonance disk 25 has the diameter D and the thickness D / 2.
  • 20 illustrates an insulator 50 and electrical conductors 51, 52, the latter of which forms the outer surface 53 of the resonance disk.
  • 21 illustrates that the resonance disk 25, which is designed as a so-called pinch, has a notch 45.
  • the resonance disk in the form of a cone or a pyramid.
  • the chosen term "resonance disc” is to be interpreted in such a way that it also includes such antenna shapes.
  • Such a cone can be formed, for example, by forming a tip cone above the resonance disc, for example according to FIGS. 11 to 13 and 16 and 17.
  • the rotatable body 3 is designed in such a way that such antenna shapes can be accommodated therein.
  • the signal coming back or received from the material found is in the form of a rotary shaft, preferably an edge rotary shaft, center rotary shaft or dimensional rotary shaft.
  • edge rotation shaft the signal goes to the edge of the material sought, with the so-called center rotation shaft to its center, and with the so-called dimension rotation shaft, it goes back to the material searched for so that its entire surface reflects the rotation shaft.
  • the length of the resonance disc is L and the radius r and further assuming that in FIGS. 11, 12 and 13 r the radius and U are the circumference of the respective resonance disc 25, is preferably
  • the resonance disk is designed in the form of a cone or a pyramid, with ⁇ for the cone angle or the pyramid surface or edge angle
  • the diameter of the resonance disk 25 corresponds to the wavelength of the signal or its fraction. This diameter is preferably 3 ⁇ , ⁇ 3/2 or ⁇ 3/4.
  • a very specific resonance disk 25 which could also be called a disk antenna, with the corresponding diameter or circumference for the corresponding frequency or wavelength for each material sought.
  • a piece of material 46 to be found or located is shown in front of the material detector device 1 at a certain distance, which is shown particularly small for drawing reasons.
  • the piece of material is at an angle of 0 °.
  • a minimum signal is obtained with the antenna in the form of the resonance disc.
  • a similar value is obtained with a 90 ° arrangement.
  • a maximum signal is obtained when the piece of material 46 is arranged at 45 ° (shown in broken lines in FIG. 3).
  • the rotatable body 3 of the instrument 2 is rotatable for setting the polarization angle 24.
  • a headphone or an electrical measuring device can be connected to the connection 21 in order to directly indicate the frequency and amplitude of the received signal and, if appropriate, the position of the material sought via the value of the direct current.
  • the printed circuit board preferably has an amplifier circuit and is used in particular to measure the wavelength and the frequencies of the received signals.
  • the resonance frequencies are usually in the audible range between 20 and 20,000 Hz. However, resonance frequencies occurring outside the audible range can also be determined with the aid of appropriate display devices.
  • FIG. 22 shows a schematic, partial vertical section through the upper part of the material detector device according to another embodiment.
  • three magnetic plates 54 are provided, a polycarbonate layer 55 being located below the upper magnetic plate 54. This is followed by the resonance disk 25 at the bottom.
  • a further polycarbonate layer 55 is located on the central magnetic plate 54.
  • FIG. 22 below the central magnetic plate 54, there is a polycarbonate plate 56 at a distance from the latter. Below the latter there is a further resonance disk 25, which is designed as a position and polarization angle resonator.
  • a polycarbonate layer 55 is again located above the lower magnetic plate 54.
  • the screw 31 is again designed as a hollow screw and is surrounded by the Teflon sleeve 35.
  • the upper resonance disk 25 is in direct contact with the screw 31.
  • the rivet sleeve 34 is located on the outside on the Teflon sleeve 35.
  • the radiation losses are minimized with the aid of the three magnetic disks 54 described above.
  • the entire arrangement ultimately preferably forms a package with self-adhesive magnetic plates and polycarbonate layers.
  • the total diameter 57 in this arrangement is preferably 31 mm, namely exactly ⁇ 3 mm.
  • a basic circuit 58 in the form of a series resonant circuit is shown schematically in FIG.
  • the resonance disk 25 is connected to a first capacitor 59 with 50 to 300 pF, which can also be bridged by an adjustable second capacitor 60 with 0 to 50 pF.
  • the output of both capacitors is connected to a first diode 61 and to a second diode 62.
  • the former is connected on its other side to an amplifier, not shown, the second is connected to a resistor 63 with 200 k ⁇ . Resistor 63 is also connected to a 9 volt DC power source.
  • the basic circuit shown in Fig. 23 operates with 0 to 8 volts DC.
  • the diodes 61, 62 can be designed as an impedance converter. Instead of the diodes mentioned, it is also possible to use signal field effect transistors for direct or alternating current.
  • the basic circuit mentioned is suitable for alternating current and direct current signals.
  • the static earth magnetic field has an influence on the direct current signal
  • the magnetic double wave also called Zenek wave, also influences the AC signal.
  • the polarization setting and measurement can be done mechanically by swiveling, tilting, rotating the material detector device or magnetically by a static, magnetic interference field or electrically directly by means of the capacitor (0 - 8 V DC voltage), e.g. B. with the help of a coil, by applying a DC voltage of 0 to 8 volts to the coil.
  • the resonance disk is, for example, made of a soft magnetic material, preferably pure iron, pure nickel and their alloys.
  • the resonance disk can be made of any metal and / or a semiconductor or piezoelectric material.
  • two mutually opposite magnetic plates are arranged outside the rotatable body of the search antenna polarization instrument, the static magnetic field of which is generated by a coil.
  • the initial polarization angle is set with a DC voltage between 0 and 8 volts (for an alloy, for example, 2.67 volts).
  • the magnetic field of the resonance disk can be evaluated by means of a Hall or magnetic field sensor, for example manufactured by Philips under the name KMZ 10.
  • the material detector device 1 is held vertically with the aid of the spirit level 8 and the bubble 9.
  • the polarization angle 24 is set to 0 "by rotating the rotatable body 3 such that the tip of the marking 10 meets the polarization angle 0 ° of the degree scale 13.
  • the detector device is then rotated 360" in the vertical position in order to clarify at which angle of rotation (azimuth angle!) a signal can be obtained taking into account that a maximum signal is obtained when the resonance disc, also called a rotating antenna, takes an angle of 45 D to the piece of material being searched for and a minimal signal is then obtained, when the rotary antenna to the material piece takes an angle of 0 or 90 ".
  • the detector device In the vertical position, as indicated in FIGS. 1 and 2, the detector device has an opening angle of 180 *, namely + or - 90", so that only from signals can be received at this opening angle.
  • the rotating antenna is then rotated again so far that the signal is minimal.
  • the detector device In this rotary position, the detector device is tilted by 90 ° in the direction of the minimum signal in the horizontal plane and held in this position.
  • a subsequent follow-up check can determine where the signal is minimal by rotating the detector device in different directions in the horizontal plane.
  • the position determination of a desired piece of material can be determined by cross bearing. If the detector device is correctly aligned, in this position there is only a minimal signal, the same measurement is carried out again from another location, so that the exact location of the piece of material or generally of the object sought can be determined by the so-called cross bearing.
  • the position of the piece of material sought can also be determined by determining the angle and distance.
  • the angle is determined in the manner described above;
  • a transit time measurement is carried out by superimposing a pulse on the signal emitted by the rotary antenna, that is to say from the resonance disc, and by measuring the transit time of the pulse, namely the time which the pulse requires until it is received the desired piece of material is reflected back at the rotating antenna.
  • the resonance disks can also be designed as a so-called dipole, for example by placing two disks next to or on top of one another. This makes it possible to obtain a signal that is twice as strong.
  • the printed circuit board 14 can be provided with potentiometers for setting a bias voltage on the capacitor electrodes of the material detector.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Remote Sensing (AREA)
  • General Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Electromagnetism (AREA)
  • Geophysics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
  • Geophysics And Detection Of Objects (AREA)

Abstract

L'invention concerne un dispositif détecteur de matière (1) qui présente un instrument de polarisation (2) faisant office d'antenne de recherche et comprenant : un corps (3) rotatif pourvu d'un disque magnétique (23), servant à ajuster l'angle de polarisation ; un corps de base (5) raccordé au corps (3) rotatif, présentant une plaque de résonance (25) formant une antenne, dont un côté (26) est orienté vers le disque magnétique (23) du corps (3) rotatif, une couche isolante (28) adjacente à l'autre côté (27) de la plaque de résonance (25), une couche de Mumetall<3> (29) adjacente à la couche isolante(28), la plaque de résonance (25) et la couche de Mumetall<3> (29) formant un condensateur (30), ainsi qu'une carte de circuits imprimés (14) qui présente des éléments électroniques et qui est reliée au condensateur (30), ladite carte de circuits imprimés permettant de déterminer la fréquence et/ou l'amplitude du signal reçu par le matériau détecté.
PCT/CH2004/000275 2003-05-28 2004-05-06 Dispositif détecteur de matière Ceased WO2004106968A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH956/03 2003-05-28
CH9562003A CH696893A5 (de) 2003-05-28 2003-05-28 Suchantennen-Polarisationsinstrument für eine Material-Detektoreinrichtung.

Publications (1)

Publication Number Publication Date
WO2004106968A1 true WO2004106968A1 (fr) 2004-12-09

Family

ID=33480358

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CH2004/000275 Ceased WO2004106968A1 (fr) 2003-05-28 2004-05-06 Dispositif détecteur de matière

Country Status (4)

Country Link
CH (1) CH696893A5 (fr)
DE (1) DE10329335B4 (fr)
TW (1) TWI336780B (fr)
WO (1) WO2004106968A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH700278B1 (de) 2007-08-09 2010-06-15 Ampass Explorer Corp Gehäuse für ein Suchantennen-Polarisationsinstrument.
DE102008054456A1 (de) * 2008-12-10 2010-06-17 Robert Bosch Gmbh Ortungsgerät
EP2696219B1 (fr) * 2012-08-06 2017-01-04 Ampass-Explorer Corp. Dispositif de montage destiné à l'amélioration de la qualité de réception d'un dispositif de détection de matériau
EP2944982A1 (fr) 2014-05-12 2015-11-18 Ampass-explorer Corp. Antenne émettrice et réceptrice pour un instrument de polarisation d'antenne de recherche
EP2960684A1 (fr) 2014-06-26 2015-12-30 Ampass-explorer Corp. Agencement d'antennes

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2544844A1 (de) * 1974-10-10 1976-04-22 Itt Ind Gmbh Deutsche Metalldetektor
DE3600055A1 (de) * 1985-01-10 1986-07-10 L'Equipement et la Construction Electrique en abrégé E.C.E., Paris Verfahren und vorrichtung zur messung des abstandes zwischen einem ortungsobjekt und einem abstandsdetektor
EP0986037A1 (fr) * 1998-03-24 2000-03-15 Mitsubishi Materials Corporation Etiquette antivol et son procede de fixation
DE10232710A1 (de) * 2001-08-28 2003-04-03 Cherry Gmbh Verfahren und Vorrichtung zum Erkennen einer räumlichen Annäherung elektrisch leitender Gegenstände und Verwendung der Vorrichtung als Kochgefässerkennungssystem

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2591695A (en) * 1943-01-06 1952-04-08 Sperry Corp High-frequency radiator apparatus and resonator
DE2307632A1 (de) * 1973-02-16 1974-08-22 Hansrichard Dipl-Phys D Schulz Anordnung zur traegerfrequenten uebertragung von tonsignalen ueber geringe entfernungen
DE8814993U1 (de) * 1988-01-04 1989-03-02 Oppermann, Richard, 7762 Ludwigshafen Antenneneinheit, bestehend aus Antennenschleife, Kondensator und Ankopplung
DE8815967U1 (de) * 1988-05-27 1989-09-21 Junghans Uhren GmbH, 7230 Schramberg Antenne für eine kleine Funkuhr
DE69424704T2 (de) * 1993-03-17 2000-09-28 Seiko Epson Corp., Tokio/Tokyo Antenne und diese enthaltendes Gerät
GB9505382D0 (en) * 1995-03-17 1995-05-03 Radiodetection Ltd Inductive transmitters for conductor location
DE19546257A1 (de) * 1995-12-12 1996-05-09 Andreas Jeutter Magnetische Richtantenne
DE19638597A1 (de) * 1996-09-20 1998-03-26 Bosch Gmbh Robert Antennenanordnung
US6091374A (en) * 1997-09-09 2000-07-18 Time Domain Corporation Ultra-wideband magnetic antenna
US6069589A (en) * 1999-07-08 2000-05-30 Scientific-Atlanta, Inc. Low profile dual frequency magnetic radiator for little low earth orbit satellite communication system

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2544844A1 (de) * 1974-10-10 1976-04-22 Itt Ind Gmbh Deutsche Metalldetektor
DE3600055A1 (de) * 1985-01-10 1986-07-10 L'Equipement et la Construction Electrique en abrégé E.C.E., Paris Verfahren und vorrichtung zur messung des abstandes zwischen einem ortungsobjekt und einem abstandsdetektor
EP0986037A1 (fr) * 1998-03-24 2000-03-15 Mitsubishi Materials Corporation Etiquette antivol et son procede de fixation
DE10232710A1 (de) * 2001-08-28 2003-04-03 Cherry Gmbh Verfahren und Vorrichtung zum Erkennen einer räumlichen Annäherung elektrisch leitender Gegenstände und Verwendung der Vorrichtung als Kochgefässerkennungssystem

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
FERRARIS L ET AL: "EMI shielding-common problems and containment strategies", ELECTROMAGNETIC COMPATIBILITY PROCEEDINGS, 1997., 1997 INTERNATIONAL SYMPOSIUM ON BEIJING, CHINA 21-23 MAY 1997, NEW YORK, NY, USA,IEEE, US, 21 May 1997 (1997-05-21), pages 86 - 89, XP010242980, ISBN: 0-7803-3608-9 *

Also Published As

Publication number Publication date
CH696893A5 (de) 2008-01-15
DE10329335A1 (de) 2004-12-30
TWI336780B (en) 2011-02-01
DE10329335B4 (de) 2005-07-21
TW200510713A (en) 2005-03-16

Similar Documents

Publication Publication Date Title
EP0071896B1 (fr) Système de bobines de haute fréquence pour un dispositif produisant des images à l&#39;aide de la technique de résonance nucléaire
EP0467202B1 (fr) Disposition pour tester des objets ayant des propriétés magnétiques
DE19952788B4 (de) Vorrichtung und Verfahren zum Bestimmen einer Kernresonanz-Eigenschaft
EP0890108B1 (fr) Capteur de champ, et dispositif et utilisation du dispositif pour mesurer les champs electriques et/ou magnetiques
DE69127277T2 (de) Analoger abweichungssensor
US5646528A (en) Magnet assembly
EP0222982A1 (fr) Bobine de surface pour l&#39;analyse par résonance magnétique nucléaire
DE4322352A1 (de) Hochfrequenz-System einer Anlage zur Kernspintomographie mit einer galvanisch entkoppelten Lokalspuleneinrichtung
DE69320360T2 (de) Kernspinresonanzgerät mit einer RF Spulenanordnung zur Erzeugung eines homogenen RF-Feldes in einem Arbeitsvolumen ausserhalb des Geräts
DE69306101T2 (de) Verfahren zum messen von position und winkel
DE69222941T2 (de) Magnetfelddetektor
DE10329335B4 (de) Suchantennen-Polarisationsinstrument für eine Material-Detektoreinrichtung
WO2002063343A1 (fr) Appareil de reperage
DE4414529A1 (de) Drehwinkelsensor vom Kapazitätstyp
DE3002950C2 (de) Ortsempfindliches Proportional-Zählrohr
DE3850716T2 (de) Kernspinnresonanzgerät und -verfahren.
DE102016102828A1 (de) Magnetanordnung und Sensorvorrichtung
DE112011104961B4 (de) Als Gradiometer ausgestalterer Induktiver Sensor
DE1673016A1 (de) Vorrichtung zur Konstanthaltung des Polarisierenden Magnetfeldes bei einem Kernresonanzgeraet
EP3695213A1 (fr) Capteur pour un dispositif de résonance de spin nucléaire
CH665682A5 (de) Bohrloch-messeinrichtung.
DE4111508C2 (de) Vorrichtung zum Anregen und/oder Messen magnetischer Resonanz
WO2006066529A2 (fr) Dispositif et procede pour reperer des objets magnetiques ou magnetisables
EP1324077B1 (fr) Procédé et dispositif de détection des objets métalliques
DE10119323A1 (de) Vorrichtung zur Erzeugung und Detektion hochfrequenter magnetischer Wechselfelder

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BW BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE EG ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NA NI NO NZ OM PG PH PL PT RO RU SC SD SE SG SK SL SY TJ TM TN TR TT TZ UA UG US UZ VC VN YU ZA ZM ZW

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): BW GH GM KE LS MW MZ NA SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LU MC NL PL PT RO SE SI SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG

121 Ep: the epo has been informed by wipo that ep was designated in this application
DPEN Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed from 20040101)
122 Ep: pct application non-entry in european phase