WO2018170530A1 - Agencement d'antenne pour un véhicule nautique - Google Patents

Agencement d'antenne pour un véhicule nautique Download PDF

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Publication number
WO2018170530A1
WO2018170530A1 PCT/AU2018/000039 AU2018000039W WO2018170530A1 WO 2018170530 A1 WO2018170530 A1 WO 2018170530A1 AU 2018000039 W AU2018000039 W AU 2018000039W WO 2018170530 A1 WO2018170530 A1 WO 2018170530A1
Authority
WO
WIPO (PCT)
Prior art keywords
antenna arrangement
watercraft
spaced apart
conductive ink
exterior surface
Prior art date
Application number
PCT/AU2018/000039
Other languages
English (en)
Inventor
Lindsay Lyon
Original Assignee
Seachange Technology Holdings Pty Ltd
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 AU2017900997A external-priority patent/AU2017900997A0/en
Application filed by Seachange Technology Holdings Pty Ltd filed Critical Seachange Technology Holdings Pty Ltd
Publication of WO2018170530A1 publication Critical patent/WO2018170530A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/27—Adaptation for use in or on movable bodies
    • H01Q1/34—Adaptation for use in or on ships, submarines, buoys or torpedoes
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01M—CATCHING, TRAPPING OR SCARING OF ANIMALS; APPARATUS FOR THE DESTRUCTION OF NOXIOUS ANIMALS OR NOXIOUS PLANTS
    • A01M29/00—Scaring or repelling devices, e.g. bird-scaring apparatus
    • A01M29/24—Scaring or repelling devices, e.g. bird-scaring apparatus using electric or magnetic effects, e.g. electric shocks, magnetic fields or microwaves
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
    • H01Q9/04—Resonant antennas
    • H01Q9/30—Resonant antennas with feed to end of elongated active element, e.g. unipole
    • H01Q9/40—Element having extended radiating surface

Definitions

  • This invention relates to devices for affecting the behaviour of chondrichthyans such as rays, skates and sharks.
  • Conventional shark repelling devices are arranged to generate a localised electrical field that causes the ampullae to spasm and consequently the shark to move away from the generated field.
  • an antenna arrangement for a watercraft including:
  • a pattern of conductive ink forming an electrical circuit with at least one pair of spaced apart electrodes
  • the antenna arrangement is applied or is applicable to an exterior surface of the watercraft.
  • the antenna arrangement is configured for use with a
  • conductive ink denotes an electrically conductive ink having a low electrical resistivity.
  • the antenna arrangement provides an electrical circuit having a resistive impedance of less than 300 milli-ohms over the total area of the antenna arrangement.
  • the antenna arrangement may be applied as, or be applicable to form, a thin layer or film on the exterior surface of the watercraft.
  • the exterior surface will be a surface of the watercraft which is in contact with water when the watercraft is in use.
  • references to the term "thin" in the context of a thin film or layer denotes a layer or film having a surface height which projects from the exterior surface by less than 600 /m.
  • the surface height is less than 500 /m.
  • the surface height is less than 400 /m.
  • the surface height is less than 300 /m.
  • the term "surface height”, where used in this specification, will be understood to denote the maximum extent to which the antenna arrangement projects outwardly from the exterior surface of the watercraft.
  • the “surface height” will thus be the difference between an outermost surface of the antenna arrangement and the exterior surface of the watercraft to which the antenna arrangement is applied.
  • the watercraft may include a vessel, such as a dinghy, a power boat, a sailing boat or the like.
  • the watercraft may include a personal watercraft such as a jet ski, canoe, kayak (such as an ocean going kayak), surf board, stand up paddle board, wave board, kite surfing board, wave ski, water ski or the like.
  • the pattern of conductive ink may be formed from any suitable conductive ink.
  • suitable conductive inks include silver, carbon, silver chlorides and graphene carbon.
  • An ultra low cure silver composite conductive ink, such as conductive inks marketed by from DuPontTM as PE827 and PE828 inks may be used.
  • Other suitable conductive inks may include graphene inks.
  • the pattern of conductive ink may be applied to a substrate using a suitable printing process.
  • a suitable printing process include inkjet printing and silk screen printing. Other methods for printing conductive inks would be known to a person skilled in the art.
  • the pattern of conductive ink is applied to the substrate to form the antenna arrangement as a unitary structure which is applicable to the exterior surface as a single piece.
  • the pattern of conductive ink may include a plurality of conductive tracks or traces having a surface height of less than 30 /m and a track width depending on electrical current requirements.
  • Each of the plurality of conductive tracks or traces may route between a respective one of the electrodes and a respective at least one termination area or point.
  • Each of the at least one termination areas or points preferably provides a landing or pad suitable for forming an electrical connection with additional and external conductive elements to thereby extend the electrical circuit.
  • the electrical connection may be formed by soldering, printing or gluing or otherwise joining the additional conductive elements to a respective termination area or point.
  • an electrical connection to a termination area or point maybe formed by overlaying one conductive ink over another conductive ink.
  • the pattern of conductive ink may be applied directly to the exterior surface of the watercraft, such as a portion of an exterior surface of a body or hull of the watercraft, or it may be applied to a separate substrate which is applied or is applicable to the exterior surface of the watercraft.
  • the exterior surface may include a surface of a control or stabilising element of the watercraft, such as a rudder, keel, or fin.
  • the spaced apart electrodes may be considered as forming a "pair" of electrodes such that when the antenna arrangement is applied to the exterior surface of the watercraft, the pair of electrodes are spaced apart across an extent of generally planar surface of the watercraft located, or intended to be located, below the water line of the watercraft when in use.
  • the spacing between the electrodes may vary according to the size and/or configuration and/or intended use of the watercraft.
  • the spacing between the electrodes may be between 1100mm and 1130 mm.
  • the electrodes are spaced between 600 mm and 800mm apart.
  • each electrode may be formed integrally with the pattern of conductive ink by suitable application of the conductive ink to an area of the substrate.
  • each electrode may include an additional layer of a suitable conductive material in electrical connection at least one of the conductive ink tracks or routes of the pattern of conductive ink to form the electrical circuit therewith.
  • the additional layer of conductive material for forming a respective electrode may include an additional printed layer of a conductive material having a higher electrical conductivity (that is, lower electrical resistance) that the conductive ink.
  • a suitable conductive material is graphene.
  • the additional layer of conductive material may include a thin layer of a metallic material, such as layer of stainless steel.
  • an electrode surface height of 25 /m may be possible.
  • a graphene electrode may be applied to the substrate using a suitable printing process, such as a wet-screen printing process, ink-jet printing process or gravure printing process.
  • Each electrode may be shaped and arranged to have a suitable configuration for projecting an electric field for repelling a chondrichthyan.
  • the electrodes have a surface area of between 50 and 100 cm " .
  • the shape and surface area may vary according to size of the watercraft and the density and/or field strength of the electric field.
  • the substrate may include a polymer substrate, such as a polyester substrate.
  • a polymer substrate such as a polyester substrate.
  • suitable polyesters include polyethylene terephthalate (PET) and polyethylene naphtholate (PEN).
  • PEN polyethylene naphtholate
  • Other polymers suitable for use as the substrate include polycarbonate, PVC, acrylic, polystyrene and polyvinylidene difluoride (PVDF).
  • the conductive ink maybe applied directly to the exterior surface of the body or hull of the water craft provided that the exterior surface comprises an insulting material.
  • the antenna arrangement includes means for connecting the antenna arrangement to a control unit to form an electrical interface therewith.
  • the control unit may include a processor, a power source and a signal generator.
  • Sensing means may also be provided to provide to the processor with one or more a sensed signals having an attribute depending on a respective associated one or more associated spaced apart electrodes being in contact with water.
  • the antenna arrangement includes a rounded edge defining a permitter of the antenna arrangement, such that the rounded edge is shaped to reduce hydrodynamic drag in use.
  • a watercraft including:
  • At least one antenna arrangement including a pattern of conductive ink forming an electrical circuit with at least one pair of spaced apart electrodes;
  • the antenna arrangement is applied or is applicable to an exterior surface of the watercraft as a thin layer.
  • the antenna arrangement is applied as a layer.
  • Yet another embodiment of an aspect of the disclosure provides a chrondrichthy an repelling system including:
  • a watercraft body or hull having an exterior surface located below a waterline of watercraft in use;
  • At least one antenna arrangement including a pattern of conductive ink providing a plurality of tracks forming an electrical circuit with at least one pair of spaced apart electrodes;
  • an electrical signal generator for connection to the spaced apart electrodes
  • the antenna arrangement is applied to the exterior surface of the watercraft as a thin layer.
  • Yet another embodiment of the disclosure provides a method of forming an antenna arrangement on an exterior surface of a watercraft, the method including:
  • Figure 1 is a plan view of an antenna arrangement according to an embodiment of the disclosure.
  • Figure 2 is a cross-sectional view of the antenna arrangement shown in Figure 1 taken along the line A- A;
  • Figure 3 is an exploded view of the antenna arrangement shown in Figure 1;
  • Figure 4 is a perspective view of the antenna arrangement shown in Figure 1;
  • Figure 5 is a perspective view of a watercraft including an antenna arrangement according to an embodiment of the disclosure.
  • Figure 6 is a block diagram of an antenna arrangement according to an embodiment of the disclosure.
  • FIGS 1 to 4 depict an antenna arrangement 10 for a watercraft according to an embodiment of the disclosure.
  • the antenna arrangement 10 includes a pattern 12 of conductive ink forming an electrical circuit with a pair of spaced apart electrodes 14, 16.
  • the illustrated antenna arrangement 10 is depicted as a thin layer antenna including a substrate 18 onto which the pattern 12 of conductive ink is applied.
  • an underside surface of substrate 18, and thus the antenna arrangement 10 is affixed to an exterior surface of the watercraft to thereby affix the antenna arrangement 10 to the watercraft.
  • an adhesive (not shown), such as an adhesive layer or bonding agent, is be used to affix the antenna arrangement 10 to the watercraft.
  • a suitable adhesive layer is a transfer tape with such as an acrylic adhesive tape marketed as 300LSE by 3MTM.
  • the illustrated embodiment of the antenna arrangement 10 includes a separate substrate 18.
  • a separate substrate 18 it is not essential that a separate substrate 18 be provided since in some embodiments the pattern 12 of conductive and the pair of spaced apart electrodes 14, 16 may be applied directly to the exterior surface of the watercraft. Nevertheless, it is preferred that a substrate 18 be provided since it may provide for a more convenient approach for applying the antenna arrangement 10 to the exterior surface of the watercraft.
  • the pattern of 12 of conductive ink includes a plurality of conductive ink tracks 20. Each of the plurality of conductive ink tracks 20 forms an electrical circuit between a respective one of the electrodes 14, 16 and a respective termination area 22, 24. As shown, termination area 22 forms an electrical circuit with electrode 14, whereas termination area or point 22 forms an electrical circuit with electrode 16.
  • the conductive ink may include an ultra low cure silver composite conductive ink, such as conductive inks marketed by from DuPontTM as PE827 and PE828.
  • suitable conductive inks may be used.
  • Example of other suitable conductive inks include graphene inks manufactured by Sigma-Aldrich® and marketed as product numbers 793663 ("Ink-jet Printable Graphene Ink”) and 796115 ("Gravure Printable Graphene Ink”).
  • Technical information for these products is available at http://www.sigmaaldrich.com/technical-documents/articles/technology- spotlights/graphene-inks-for-printed-electronics.html.
  • an insulating layer may be applied over the conductive ink tracks 20 (including the termination areas 22, 24) and the electrodes 14, 16 to provide a protective seal which hermetically isolates the conductive 20 tracks and the electrodes 14, 16 from the environment in use.
  • the insulating layer is a UV stabilised insulating material.
  • the termination areas 22, 24 provide a landing suitable for forming an electrical connection with additional and external conductive elements to thereby extend the electrical circuit.
  • the electrical connection may be formed by joining the additional conductive elements to a respective termination area 22, 24 using a suitable joining process, such as soldering.
  • the pair of electrodes 14, 16 are included in a respective circuit for radiating an electric field having a field pattern projected by the antenna arrangement 10 when in use.
  • a field pattern can be formed which projects from the exterior surface of the watercraft an electric field for repelling chrondri chthy an .
  • Each electrode 14, 16 may be formed of any suitable thin conductive material. Examples of suitable materials include graphene, metal, or a conductive polymer. In the present case, each electrode is a metallic electrode made from stainless steel (for example, 316L stainless steel) having a suitable geometric configuration.
  • stainless steel for example, 316L stainless steel
  • electrodes 14, 16 may include a plate or mesh-like element.
  • each electrode 14, 16 may include a woven or grid-like mesh arrangement of a suitably conductive material.
  • the electrodes 14, 16 may be printed, sprayed or otherwise applied as a fluid which cures or sets on the substrate 18 to form an electrical connection with a respective one or more conductive ink tracks 20.
  • Each electrode 14, 16 has a configuration which provides an area suitable for radiating an electric field having a desired field pattern projecting from the exterior surface.
  • a suitable electrode configuration is a 110mm x 110mm ovoid shaped electrode having a material thickness of between 300 um and 500 um.
  • Another example of a suitable electrode configuration is a 72 mm x 60 mm ovoid shaped electrode having a material thickness of between 300um and 500um.
  • Yet another example of a suitable electrode configuration is an 88 mm x 80 mm ovoid shaped electrode having a material thickness of between 300/zm and 500/zm.
  • the electrodes 14, 16 are arranged to provide an inter electrode separation which allows for a localised (that is, localised to the exterior surface of the watercraft) electric field strength which is effective at repelling chrondri chthy an.
  • each electrode 14, 16 is located so as to provide an inter electrode separation which does not exceed 1130 mm.
  • the particular inter electrode separation may vary between different watercraft types and indeed the intended use of the watercraft.
  • Figure 5 illustrates a watercraft 100 in the form of a surf board 102.
  • the illustrated surf board 102 includes a body 104 to which an antenna arrangement 10 according to an embodiment of the disclosure has been applied. As shown, the antenna arrangement 10 is affixed to an exterior underside surface of the body 104.
  • the illustrated surf board 102 is also fitted with a control unit 106. As described above, terminations 22, 24 electrically connect each electrode 14, 16 to the control unit 106 via a suitable electrical interconnection arrangement 108.
  • the electrical interconnection arrangement 108 includes a printed flexible conductor, such as a graphene printed flexible conductor, which is affixed to the surf board 102.
  • a printed flexible conductor such as a graphene printed flexible conductor
  • other types of electrical interconnection arrangement 108 may be used.
  • control unit 106 includes a processor 200, a power source 202 (such as a battery), a signal generator 204, and electrode interface electronics 206.
  • Status indicators 210 are also arranged to be readily viewable by a user of the watercraft.
  • Processor 200 may include, for example, one or more processors executing resident configured logic, where such computing devices include, for example, microprocessors, digital signal processors (DSPs), microcontrollers, or any suitable combination of hardware, software and/or firmware containing processors and logic configured to at least perform the operations described herein.
  • processors executing resident configured logic
  • computing devices include, for example, microprocessors, digital signal processors (DSPs), microcontrollers, or any suitable combination of hardware, software and/or firmware containing processors and logic configured to at least perform the operations described herein.
  • Processor 200 can include an application specific integrated circuit ("ASIC"), or other processor, microprocessor, logic circuit, or other data processing device.
  • the processor 200 executes embedded application software 212 that interfaces with any resident programs in the memory 214 of the control unit 106.
  • the memory 214 can include read-only or random-access memory (RAM and ROM), EEPROM, flash cards, or any memory common to computer platforms.
  • the control unit 106 may also include a local storage device 216 that can hold applications not actively used in memory 214.
  • the storage device 216 is typically a flash memory cell, but can be any secondary storage device as known in the art, such as an EEPROM, or the like.
  • the control unit 106 may have installed on it, or may otherwise download, one or more software applications for controlling the operation of the electrodes 14, 16. Such software applications may be stored on the local storage device 216 when not in use.
  • Any suitable electrical signal generator 204 can be used, such that it will generate electrical signals for application across the first and second electrodes of an enabled electrode pair to radiate an electric field therebetween that will repel chondrichthyans.
  • An example of one suitable signal generator is described in detail in U.S. Pat. No.
  • chondrichthyan repelling system for repelling chondrichthyans including at least one pair of electrodes, the repelling system including an electrical signal generator for providing an signal to for generating an electric field across each at least one pair of electrodes which, in use, repel

Abstract

La présente invention concerne un agencement d'antenne pour un véhicule nautique. Selon un mode de réalisation, l'agencement d'antenne comprend un motif d'encre conductrice formant un circuit électrique doté d'au moins une paire d'électrodes espacées, l'agencement d'antenne étant appliqué ou pouvant être appliqué à une surface extérieure du véhicule nautique. L'agencement d'antenne selon l'invention peut former une partie d'un système de répulsion de chondrichthyans comprenant l'agencement d'antenne décrit et un générateur de signal électrique pour une connexion aux électrodes espacées pour fournir des signaux électriques pour une application aux bornes des électrodes espacées afin de rayonner un champ électrique entre celles-ci pour repousser les chondrichthyans.
PCT/AU2018/000039 2017-03-21 2018-03-21 Agencement d'antenne pour un véhicule nautique WO2018170530A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AU2017900997 2017-03-21
AU2017900997A AU2017900997A0 (en) 2017-03-21 Antenna arrangement for a water craft

Publications (1)

Publication Number Publication Date
WO2018170530A1 true WO2018170530A1 (fr) 2018-09-27

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PCT/AU2018/000039 WO2018170530A1 (fr) 2017-03-21 2018-03-21 Agencement d'antenne pour un véhicule nautique

Country Status (1)

Country Link
WO (1) WO2018170530A1 (fr)

Citations (3)

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Publication number Priority date Publication date Assignee Title
US6384727B1 (en) * 2000-08-02 2002-05-07 Motorola, Inc. Capacitively powered radio frequency identification device
US7892610B2 (en) * 2007-05-07 2011-02-22 Nanosys, Inc. Method and system for printing aligned nanowires and other electrical devices
US20120055013A1 (en) * 2010-07-13 2012-03-08 Féinics AmaTech Nominee Limited Forming microstructures and antennas for transponders

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6384727B1 (en) * 2000-08-02 2002-05-07 Motorola, Inc. Capacitively powered radio frequency identification device
US7892610B2 (en) * 2007-05-07 2011-02-22 Nanosys, Inc. Method and system for printing aligned nanowires and other electrical devices
US20120055013A1 (en) * 2010-07-13 2012-03-08 Féinics AmaTech Nominee Limited Forming microstructures and antennas for transponders

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
EOM, S ET AL.: "Pattern Switchable Antenna System Using Inkjet-Printed Directional Bow-Tie for Bi-Direction Sensing Applications", SENSORS, vol. 15, 10 December 2015 (2015-12-10), pages 31171 - 31179, XP055540545, Retrieved from the Internet <URL:https://www.researchgate.net/publication/287107733_Pattern_Switchable_Antenna_System_Using_Inkjet-Printed_Directional_Bow-Tie_for_Bi-Direction_Sensing_Applications> [retrieved on 20180423] *
SHAKER, G ET AL.: "Inkjet Printing of Ultrawideband (UWB) Antennas on Paper-Based Substrates", IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS, vol. 10, 2011, pages 111 - 114, XP011351307, Retrieved from the Internet <URL:https://ieeexplore.ieee.org/document/5688435> [retrieved on 20180424] *

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