WO2001008478A1 - Systeme de dissuasion et appareil acoustique - Google Patents

Systeme de dissuasion et appareil acoustique Download PDF

Info

Publication number
WO2001008478A1
WO2001008478A1 PCT/NZ2000/000091 NZ0000091W WO0108478A1 WO 2001008478 A1 WO2001008478 A1 WO 2001008478A1 NZ 0000091 W NZ0000091 W NZ 0000091W WO 0108478 A1 WO0108478 A1 WO 0108478A1
Authority
WO
WIPO (PCT)
Prior art keywords
deterrent
target
detection
directional
control zone
Prior art date
Application number
PCT/NZ2000/000091
Other languages
English (en)
Inventor
John Haylock
Alexander Lang
Mark Poletti
Original Assignee
The Horticulture & Food Research Institute Of New Zealand Ltd.
Industrial Research Limited
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 The Horticulture & Food Research Institute Of New Zealand Ltd., Industrial Research Limited filed Critical The Horticulture & Food Research Institute Of New Zealand Ltd.
Priority to AU49599/00A priority Critical patent/AU4959900A/en
Publication of WO2001008478A1 publication Critical patent/WO2001008478A1/fr

Links

Classifications

    • 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
    • A01M29/16—Scaring or repelling devices, e.g. bird-scaring apparatus using sound 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
    • G01S3/00—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received
    • G01S3/78—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received using electromagnetic waves other than radio waves
    • G01S3/782—Systems for determining direction or deviation from predetermined direction
    • G01S3/785—Systems for determining direction or deviation from predetermined direction using adjustment of orientation of directivity characteristics of a detector or detector system to give a desired condition of signal derived from that detector or detector system
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V1/00—Seismology; Seismic or acoustic prospecting or detecting
    • G01V1/003—Seismic data acquisition in general, e.g. survey design
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/18—Methods or devices for transmitting, conducting or directing sound
    • G10K11/26—Sound-focusing or directing, e.g. scanning
    • G10K11/34—Sound-focusing or directing, e.g. scanning using electrical steering of transducer arrays, e.g. beam steering
    • G10K11/341—Circuits therefor
    • G10K11/346—Circuits therefor using phase variation

Definitions

  • the present invention relates to a deterrent system for unwanted intruders or pests.
  • the invention relates to a deterrent system for scaring birds and small mammals from areas containing crops.
  • the invention is also directed to control of pests or intruders through the use of highly focussed sound beams.
  • An acoustic apparatus for producing highly focussed sound beams is also the subject of the present invention. Whilst the invention is described particularly in terms of controlling bird incursions into areas with crops, the invention is not so limited and may be adapted to controlling other pests or intruders including humans from other controlled areas.
  • An object of the present invention is to overcome or at least ameliorate some of the abovementioned disadvantages.
  • An alternative object is to provide the public with a useful choice.
  • a deterrent system for unwanted intruders including: a detection and discrimination instrument operable to detect the presence and vicinity of life forms and/or moving objects within a control zone or within a predetermined range of the detection and discrimination instrument, the detection and discrimination instrument being operable to determine the presence of a target from any detected life forms or objects as well as to determine the target vicinity or direction from the detection and discrimination instrument; and directional deterrent apparatus responsive to the detection of a target by the detection and discrimination instrument to automatically create a deterrent on detection, wherein the directional deterrent apparatus has a steering facility to direct the deterrent in the detected vicinity of the target.
  • target is used to mean a predetermined unwanted intruder which the system has been set up to respond to and deter from being within the control zone.
  • the system may operate such that a deterrent is only directed towards the target when the target is within the control zone.
  • the detection and discrimination instrument may be able to detect the presence of targets outside the control zone but within range of the detection and discrimination instrument thereby monitoring targets outside of the control zone ready for any intrusion into the zone.
  • the detection and discrimination instrument may determine the precise location of the detected life form and/or moving object but in many embodiments the general whereabouts may be sufficient for effective operation of the system.
  • the detection and deterrent instrument may be embodied in a moveable scanner, moveable to ensure adequate coverage of the control zone. A number of scanners may be employed to adequately protect the control zone.
  • the detection and discrimination instrument may be embodied in separate units for detection and discrimination respectively.
  • the detection unit might incorporate any conventional sensors such as infra-red or movement detectors or both.
  • the discrimination unit being responsive to the detection unit preferably incorporates image recognition technology to determine the presence of a target.
  • the detection unit may be remote from the discrimination unit.
  • the detection and discrimination functions are embodied in a single unit.
  • a unit may employ image recognition technology.
  • the preferred detection and discrimination instrument employs video image analysis technology whereby pixel disturbance in a CCD screen is used to detect the presence of a life form and/or object, with image processing techniques used to verify whether the detected life form/object is a target.
  • More than one type of life form/moving object may be identified in the system as a target.
  • the system may be variable to change the target(s). This may be achieved by a software change.
  • Common targets include birds, although certain introduced species may be identified as targets with native species being not so identified. Other possible targets include humans, rabbits, possums and other pests.
  • the directional deterrent may be variable according to the circumstances.
  • the zone may be divided into an inner zone and an outer zone with a more severe deterrent delivered to targets entering the inner zone compared with the deterrent delivered to targets present in the outer zone.
  • a more severe deterrent might be a louder sound or a sound which is more threatening to the target in question.
  • the directional deterrent may also be variable in type.
  • the type may be varied according to the identified target.
  • Alternatives of deterrent type include sound or light.
  • an intense light beam may be a sufficient deterrent for the target to leave the control zone.
  • other species eg bats and flying foxes may be more responsive to sound deterrents.
  • the directional deterrent may also be adjustable within certain ranges. For sound, such adjustments include changes in pitch, volume, beam width and behavioural characteristics. Considering pitch, the choice of pitch would depend on the target. An appropriate pitch for birds would be in the range of 2 to 6 kHz which is within the range audible to humans. The noise level selected could be varied between different targets but preferably the noise level is not such that it would cause deafness to humans. An appropriate level could be 100 decibels at 100 metres from the source of the sound beam.
  • the beam of sound be focused ie narrow towards the vicinity of the intruder or pest with attenuated levels of sound propagated in other directions.
  • the sounds used may be local or natural sounds. Sounds which emulate predators to the target animals are also desirable.
  • the deterrent type is a light beam
  • characteristics such as colour, brightness and behaviour may be adjusted according to the target. It is considered that some target animals may be more sensitive to certain colours than others.
  • the use of strobe lights might also have a deterrent effect.
  • the deterrent may be directed at the target to allow for the moving trajectory of the target.
  • the system is sufficiently responsive or the deterrent is sufficiently generalised, no specific adjustment for the moving trajectory may be required.
  • the deterrent apparatus As the deterrent is directed according to the detected position of the target, it is necessary for the deterrent apparatus to have adjustable aim. This may be achieved by physically moving the source of the deterrent.
  • the source may move by pivoting or sliding and in particular a rotatable turntable may be provided for pivoting of the source.
  • electronic steering of a focused sound beam mav be achieved.
  • the system may also provide for continued tracking of the target while in range of the detection and deterrent instrument and/or within the control zone.
  • the tracking may be effected by systematic scanning within the range or the control zone.
  • tracking may be facilitated by calculating a probable position from a projected trajectory of the target and searching within the probable position.
  • the system may accommodate a number of targets by responding with a directional deterrent in order of detection or ordered according to a convenient order on consideration of their relative positions.
  • the system may also provide responses to non-targets detected by the detection and discrimination instrument.
  • the detection and discrimination instrument may also identify the detected life form/object which is not a target.
  • directional responses may also be delivered but other responses may also be provided.
  • a response to humans within the control zone might be to warn them of the operation of the deterrent system including perhaps temporary disablement of the system.
  • an interface is provided linking the detection and discrimination instrument with the directional deterrent.
  • a deterrent system for unwanted intruders including: a detection and discrimination instrument operable to detect the presence of life forms and/or moving objects within a control zone or a predetermined range of the detection and discrimination instrument and operable to determine whether any detected life forms or objects constitute a target; wherein the detection and discrimination means incorporates a tracking function such that on determination of the presence of a target, the detection and discrimination instrument is operable to track the presence of said target within the range or the control zone on at least one successive occasion; and the detection system further including deterrent apparatus responsive to the detection and discrimination instrument to automatically create a deterrent to the target on each occasion the target is detected within range or within the control zone.
  • the invention according to the second aspect provides continued tracking with follow-up response while the target is within range or in the control zone, ceasing beyond range or the control zone.
  • This continued tracking is intended to activate the target animals' instinctive fear of being hunted.
  • the system may operate to "watch" the target beyond the control zone but within range of the detection and discrimination instrument so that any incursion into the control zone will be promptly responded to.
  • the tracking may occur at regular time intervals.
  • the tracking may be irregular, for example, at progressively reduced intervals for stubborn intruders.
  • the detection and discrimination instrument may have any of the features set out above in connection with the first aspect of the invention.
  • the tracking function may be achieved by systematic scanning of the control zone.
  • a predicted trajectory of the moving target may be used to predict successive locations where the target may be detected.
  • a pest or intruder deterrent system including: a detection instrument to detect the presence and vicinity of an intruder or pest; a deterrent apparatus responsive to the detection instrument for directing a narrow focused sound beam in a range audible to the pest or intruder towards the vicinity of the intruder or pest with attenuated levels of sound propagated in other directions, the degree of focusing being greater than that achievable with a conventional loudspeaker in the same frequency range.
  • the frequency range of operation would be 1 to 10 kHz.
  • a method of deterring intruders or pests including: detecting the presence and vicinity of an intruder or pest; directing a narrow focused beam of sound within an audible frequency range of the intruder or pest towards the vicinity of the intruder or pest with attenuated levels of sound propagated in other directions, the degree of focusing being significantly greater than that achievable with a single conventional loudspeaker in the same frequency range.
  • the frequency range of operation would be 1 to 10 kHz.
  • Conventional loudspeaker means a direct radiator loudspeaker or a driver loudspeaker coupled with a conventional horn to increase efficiency. It will be understood that a single conventional loudspeaker is able to achieve a degree of focusing which typically rises with frequency. In conventional direct radiator loudspeakers this is dependent on the frequency of the sound beam and radius of the loudspeaker. In a horn loudspeaker, the degree of focusing is dependent on the frequency of the sound beam, the area of the horn mouth and the particular shape of the inner part of the horn. As an example, consider a direct radiator loudspeaker in the form of a circular piston having a radius A within a large acoustic baffle.
  • the method operates within a range whereby the whole range is normally audible to the intruder or pest.
  • the operational frequency range is preferably between 2 and 5 kHz.
  • the method may be such that the type of intruder or pest can be determined, with an adjustment of the frequency of the sound beam possible according to the type of intruder or pest determined.
  • the narrow focused sound beam is formed by a process of beamforming ie with a closely spaced, substantially side-by-side array of loudspeakers.
  • each of the loudspeakers have respective horns to increase the directivity of the array in the upright direction with a narrow dimension in the sidewards direction to enable close spacing of the loudspeakers for beamforming functioning.
  • the horizontal distance between adjacent loudspeakers is less than ⁇ /2, where ⁇ is the wavelength at the highest frequency of operation. For the frequency range of interest ie 1 to 10 kHz, the loudspeakers will thus be closely packed.
  • the loudspeaker drivers may be staggered to achieve the desired degree of close spacing in the sideways direction.
  • the narrow focused beam is not limited to being formed by a process of beamforming.
  • the narrow focused beam may be created through the use of a parabolic dish with a loudspeaker provided at the focus of the dish and facing towards it.
  • the source of the narrow focused beam is steerable either electronically or manually or through the use of a motorised platform.
  • the beam is created by a process of beamforming, a linear variation of delays across the array is appropriate to achieve steering of the beam towards the intruder or pest.
  • the method set out above may be used to deter unwanted pests such as birds or other introduced animals.
  • the method may be employed against intruders of the human kind.
  • the invention according to the third and fourth embodiments may detect the presence and vicinity of an intruder or pest by any one of the methods set out in accordance with the first and second aspects of the invention. Such methods include conventional pests/intruder detection methods.
  • an acoustic apparatus including a plurality of loudspeakers in a substantially side-by-side array, each of the loudspeakers having a respective horn, the horns being sufficiently narrow to enable the apparatus to function as a beamformer in the frequency range of 1 to 10 kHz.
  • the preferred frequency range is 2 to 5 kHz. In a most preferred form of the invention the range is 5 kHz which correlates to a wavelength of 68 mm.
  • the loudspeakers should preferably be 34 mm apart.
  • the loudspeakers may be staggered vertically so as to meet the criteria of 34 mm apart.
  • the horns may have none or minimal flare in the sideways direction. Preferably there is a high degree of flare in the transverse ie the vertical direction. This flare may be exponential.
  • the acoustic apparatus may include steering means to control the direction of the beam produced therefrom. Preferably this is achieved with a linear variation of delays across the array.
  • This invention may also be said broadly to consist in the parts, elements and features referred to or indicated in the specification of the application, individually or collectively, and any or all combinations of any two or more said parts, elements or features, and where specific integers are mentioned herein which have known equivalents in the art to which this invention relates, such known equivalents are deemed to be incorporated herein as if individually set forth.
  • Figure 1 is a schematic view of the deterrent system in accordance with a preferred embodiment of the present invention.
  • Figure 2 is a schematic view of a beamforming array for use in conjunction with the deterrent system illustrated in Figure 1 ;
  • Figure 3 is a schematic view of the loudspeaker horn arrangement adapted for use in the deterrent system illustrated in Figure 1 ;
  • Figure 4 is a circuit diagram for a divider circuit for each of the loudspeaker drivers.
  • Figure 5 shows a typical polar response using beamforming techniques in accordance with the present invention.
  • Figure 1 illustrates schematically the operation of a deterrent system 10 used for deterring pests such as birds 11 from entering a control zone 12.
  • the main components of the system include a detection and discrimination instrument C used to detect the presence of birds 11 within the control zone 12 and to determine whether such birds constitute a target for the deterrent system 10.
  • the detection and discrimination instrument C is preferably in the form of an image processor such as a CCD camera.
  • the system 10 is programmed to deter all types of birds entering the control zone 12.
  • the second main component of the system 10 includes directional deterrent apparatus B.
  • the directional deterrent apparatus B is linked to the detection and discrimination instrument C via signals processor A.
  • the processor A contains means for storing audio waveforms, reading the waveforms and sending them to the directional deterrent instrument B.
  • the directional deterrent apparatus B is responsive to the detection and identification of a target by detection and discrimination instrument C.
  • the detection and discrimination instrument C locates a target, a signal is sent to the processor A which in turn sends a signal to the directional deterrent apparatus B to send a deterrent to the birds 11.
  • the detection and discrimination instrument C may also send a signal representative of the direction or vicinity of the detected birds 11.
  • the processor A in turn sends a signal to the directional deterrent apparatus B so that the deterrent will be directed towards the birds 11 as illustrated.
  • the deterrent is preferably a narrow focused sound beam with attenuated levels of sound propagated in the other directions. In this manner, neighbours 15 to the control zone 12 will receive minimal noise leakage from the control zone 12.
  • the system may be designed to continually track the birds while in the control zone and provide repeated responses to a particular bird while it remains in the control zone. In this manner, the system attempts to bring out the birds' fear of being hunted to thereby reduce the likelihood of habituation to the deterrent.
  • the directional deterrent apparatus B incorporates a loudspeaker array which is designed to provide a narrow beam of sound which can be steered in a desired direction by beamforming techniques.
  • the theory of beam steering will be understood to those skilled in the field. To summarise: a linear array of loudspeakers, each receiving the same signal, will produce a narrow beam of sound on axis with relatively low radiation of sound in off-axis directions. By applying a linear variation of delays across the array, the beam can be 'swung' to a direction different than on-axis. The radiation of sound at angles away from the main beam (sidelobes) may be further reduced by reducing the amplitude of signals sent to the speaker elements at the ends of the array.
  • Figure 2 shows the general principle of a beamforming array.
  • a signal s(t) is input to N delay lines, with delay times T, to T ⁇ .
  • the outputs of each delay line are scaled in amplitude by weighting coefficients a, to a N , and the weighted delayed signals applied to power amplifiers A [ to A N and loudspeakers L j to L ⁇ ,.
  • the delay lines are arranged to have a linear increase in delay across the array, then the signal leaving the Nth loudspeaker will be broadcast at a later time than that of the (N-l)th loudspeaker, which will be broadcast later than the (N-2)th loudspeaker, and so on.
  • the loudspeakers are close enough together, the pressure signals they generate combine to form a single wavefront which propagates in a direction i degrees from the line perpendicular to the array.
  • the required delays are given mathematically by
  • d is the spacing between the loudspeakers and c is the speed of sound in air.
  • the direction of propagation may thus be varied by altering the delay variation between the loudspeakers.
  • the image processor preferably consists of a CCD camera which focuses the image in its field of view onto a CCD optical sensor.
  • the CCD sensor samples the image spatially in a two dimensional array of "pixels" by converting the light falling on each pixel into an electrical charge.
  • the charges are read out of the sensor array f R times every second, where f R is the frame rate, sampled by an analog to digital convertor, and the samples representing the image in each frame are stored in digital memory.
  • the camera contains one or more image processor devices which process successive images to determine whether a target exists in the field of view.
  • image processing typically commences by taking the difference between successive frames in order to eliminate non-moving elements of the image such as those due to background objects.
  • the processors then further processes successive frame differences in order to detect moving objects, using image processing techniques which will be known to those skilled in the art. For example, spatial filtering may be used to enhance high frequency components to allow the detection of edges, or to eliminate noise components in the image.
  • the image processors also run a prediction algorithm on any detected targets in order to estimate their angular velocity and direction.
  • the target information is then transmitted from the CCD camera to the processor A (figure 1) - typically via a serial digital format - which initiates the directional deterrent apparatus B to deliver an audible deterrent response to the target.
  • a prototype system was constructed in which electronic steering was not implemented.
  • the array therefore only radiates sound in a focused beam directly to the front of the array (on-axis).
  • the loudspeaker drivers may in principle all be driven from a single amplifier.
  • four amplifiers were used, each driving four loudspeakers.
  • the weights a ⁇ were implemented as passive attenuators using capacitors, as will be described below.
  • the second requirement specifies the maximum size of the loudspeaker elements in the array.
  • the Motorola range of piezo hom drivers are commonly used in public address loudspeakers, and are relatively cheap (around NZ$20.00).
  • the Motorola Powerline KSNl 142 A driver has a standard thread that allows the fitting of a separate hom.
  • the driver has the following specifications:
  • Typical Impedance Appears as a 0.3 ⁇ F capacitor
  • the frequency response is measured with the driver fitted to a 2 by 6 inch Motorola exponential horn. It is therefore likely that the horn designed here will have a similar response; in particular it will begin to roll off below 2 kHz.
  • the Powerline drivers contain the parallel combination of a miniature light bulb and a positive temperature coefficient resistor. These two devices protect the driver from high temperatures caused by amplifier clipping or high levels of high frequency energy (where the capacitive load impedance is small).
  • the driver 22 has an outside diameter of 64 mm. This size means that the maximum frequency of beamforming would be 2.6 kHz. This is too low to allow beamforming over the frequency range of bird signals (1 to 5 kHz). However, the driver output duct has a diameter of about 32mm. A staggered design illustrated in Figure 3 was therefore developed. The spacing of the adjacent drivers 22 when measured between vertical lines extending through the drivers 22 is only 32 mm in this staggered array, thus producing a maximum beamforming frequency of 5.3 kHz.
  • the driver 22 has an internal dimension at its output of 22.23mm. In order to prevent the reflection of energy back into the driver 22 from a change in cross sectional area, any hom connected to the driver 22 should have the same internal diameter.
  • the first cross mode frequency is
  • a prototype hom 20 was designed and constructed from 4mm PVC, by heat forming the upper and lower exponential flares to a wooden former and gluing PVC sheet to each side.
  • An adaptor was machined from solid PVC which mated the circular opening of the Motorola driver to the rectangular throat of the hom 20, and which had an internal thread matched to the driver thread.
  • the hom 20 had the following characteristics:
  • the cutoff frequency is well below the operating frequency range of the device, and the first cross mode above the upper frequency range of 5 kHz, as required.
  • the window weights were implemented in practice as capacitive dividers.
  • the circuit diagram of a single divider circuit is shown in Figure 4.
  • a resistor is also included in order to limit the high frequency impedance and reduce the risk of amplifier instability.
  • the amplifier is a Rockford Fosgate Punch 400.4.
  • the amplifier has four channels, and the following specifications of relevance:
  • the amplifier contains an internal dc-dc convertor which allows it to produce an output swing of around 25 volts peak max. This allows the amplifier to produce greater power output than standard car amplifier chips such as the Philips TDA series, which offer bridge outputs and an effective peak voltage of 12 volts.
  • the input sensitivity of each amplifier was adjusted to one volt, so that a one volt peak input signal connected to each input produced an output from the corresponding amplifier of just below clipping.
  • Figure 5 shows a typical polar response that may be obtained using beamforming techniques.
  • a sixteen loudspeaker array is used, and the direction of propagation is thirty degrees.
  • the loudspeakers were spaced at 0.45 to ensure a single wavefront without aliasing.
  • the typical polar response of a single conventional loudspeaker is shown as the dash- dotted line.
  • the response has a broad peak at zero degrees, with a null at 180 degrees (not shown).
  • the response has a peak at 30 degrees, and drops off rapidly at other angles, where a number of sidelobes occur periodically with angle.
  • the effect of applying windowing to the array is shown as the solid line.
  • the applied window was a Kaiser window with Kaiser parameter 1.5.
  • the sidelobes are reduced by about 5 dB.
  • the new technology will be activated only when the control zone is invaded. Birds will be scared as a result of being noticed and 'hunted' by the noise rather than simply experiencing a 'fear of the unfamiliar'. Target species are thus much less likely to become habituated to this system than they are to conventional scarers.
  • the system will have much less environmental impact than conventional gas gun bangers.
  • the new deterrent is based on scaring birds with loud noise (c. 100 dB at 100m)
  • the new speaker array technology delivers a defined beam of sound with very little sound 'leakage' to uncontrolled airspace compared with conventional bangers.
  • municipal councils on the hours of use of conventional bangers there are growing numbers of complaints over their usage.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Remote Sensing (AREA)
  • General Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Birds (AREA)
  • Environmental & Geological Engineering (AREA)
  • Geology (AREA)
  • Electromagnetism (AREA)
  • Geophysics (AREA)
  • Multimedia (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Insects & Arthropods (AREA)
  • Pest Control & Pesticides (AREA)
  • Wood Science & Technology (AREA)
  • Zoology (AREA)
  • Environmental Sciences (AREA)
  • Burglar Alarm Systems (AREA)
  • Catching Or Destruction (AREA)

Abstract

L'invention concerne un système destiné à dissuader des intrus (11), par exemple les oiseaux, qui comprend un détecteur (C) permettant de distinguer une forme vivante des autres objets mobiles et de déterminer sa proximité ou sa direction. L'appareil de dissuasion (B) répond automatiquement en créant une dissuasion, par exemple un faisceau sonore focalisé étroit, qui suit la cible tant qu'elle dans la zone de contrôle (12). L'appareil de dissuasion (B) peut comporter une ligne décalée de haut-parleurs séparés approximativement de 34 cm, dont les pavillons sont suffisamment étroits pour permettre la formation de faisceau dans la gamme de fréquence 1-10 kHz. Lesdits pavillons peuvent être évasés verticalement, mais non évasés horizontalement. Le faisceau de dissuasion peut être dirigé par une variation linéaire des délais à travers le réseau.
PCT/NZ2000/000091 1999-06-03 2000-06-06 Systeme de dissuasion et appareil acoustique WO2001008478A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU49599/00A AU4959900A (en) 1999-06-03 2000-06-06 Deterrent system and acoustic apparatus

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NZ336109 1999-06-03
NZ33610999A NZ336109A (en) 1999-06-03 1999-06-03 Deterrent system for animals or intruders using steerable acoustic beam

Publications (1)

Publication Number Publication Date
WO2001008478A1 true WO2001008478A1 (fr) 2001-02-08

Family

ID=19927316

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/NZ2000/000091 WO2001008478A1 (fr) 1999-06-03 2000-06-06 Systeme de dissuasion et appareil acoustique

Country Status (3)

Country Link
AU (1) AU4959900A (fr)
NZ (1) NZ336109A (fr)
WO (1) WO2001008478A1 (fr)

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2872672A1 (fr) * 2004-07-02 2006-01-06 Tda Armements Sas Soc Par Acti Systeme de protection sonore deployable
WO2010023253A1 (fr) * 2008-08-28 2010-03-04 Sa Speir Aviation Limited Système permettant d’éviter une collision avec des oiseaux
US20100128123A1 (en) * 2008-11-21 2010-05-27 Bosch Security Systems, Inc. Security system including less than lethal deterrent
US20120213387A1 (en) * 2011-02-18 2012-08-23 David Edwards Blore Acoustic Horn Gain Managing
JP2013085538A (ja) * 2011-10-21 2013-05-13 East Japan Railway Co カラス忌避システム
WO2015127292A1 (fr) * 2014-02-20 2015-08-27 Turtle Beach Corporation Appareil et procédés ultrasonores de dissuasion d'intrusion
US9185476B2 (en) 2009-09-11 2015-11-10 Bose Corporation Automated customization of loudspeakers
GB2531059A (en) * 2014-10-10 2016-04-13 Scarecrow Bio-Acoustic Systems Ltd Bird scaring apparatus
CN105875587A (zh) * 2016-06-24 2016-08-24 中国科学院上海高等研究院 目标驱离装置及基于所述目标驱离装置的目标驱离方法
WO2018006132A1 (fr) * 2016-07-08 2018-01-11 Commonwealth Scientific And Industrial Research Organisation Système de répulsion d'organismes nuisibles
EP3183603A4 (fr) * 2014-08-21 2018-04-25 IdentiFlight International, LLC Détection et identification d'oiseau ou de chauve-souris pour atténuation de risque d'éolienne
WO2019023106A1 (fr) * 2017-07-24 2019-01-31 College Of William And Mary Systèmes et procédés de réduction de risques de collision avec un oiseau
US10645919B2 (en) 2016-06-01 2020-05-12 Daniel GIANGRASSO Bird deterrent
RU2729972C1 (ru) * 2017-07-14 2020-08-13 Фраунхофер-Гезелльшафт Цур Фердерунг Дер Ангевандтен Форшунг Е.Ф. Громкоговоритель
US11544490B2 (en) 2014-08-21 2023-01-03 Identiflight International, Llc Avian detection systems and methods
GB2610175A (en) * 2021-08-23 2023-03-01 Siemens Mobility Ltd Trespassing deterrence

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0457487A2 (fr) * 1990-05-18 1991-11-21 Matsushita Electric Industrial Co., Ltd. Haut-parleur à pavillon
JPH04351197A (ja) * 1991-05-29 1992-12-04 Matsushita Electric Ind Co Ltd 指向性制御スピーカシステム
US5299971A (en) * 1988-11-29 1994-04-05 Hart Frank J Interactive tracking device
JPH06225379A (ja) * 1993-01-25 1994-08-12 Matsushita Electric Ind Co Ltd 指向性スピーカ装置
DE4430167A1 (de) * 1994-08-25 1996-02-29 Wilhelm Goecke Greifvogelidentifikationssystem zum Schutz von Geflügel
WO1996014723A1 (fr) * 1994-11-08 1996-05-17 Duran B.V. Systeme de haut-parleurs a sensibilite directionnelle controlee
DE19701186A1 (de) * 1996-01-12 1998-07-16 Fraunhofer Ges Forschung Interaktives Überwachungssystem
US5786760A (en) * 1995-03-08 1998-07-28 Suzuki; Tomohiko Alarm system with variable warning signal

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5299971A (en) * 1988-11-29 1994-04-05 Hart Frank J Interactive tracking device
EP0457487A2 (fr) * 1990-05-18 1991-11-21 Matsushita Electric Industrial Co., Ltd. Haut-parleur à pavillon
JPH04351197A (ja) * 1991-05-29 1992-12-04 Matsushita Electric Ind Co Ltd 指向性制御スピーカシステム
JPH06225379A (ja) * 1993-01-25 1994-08-12 Matsushita Electric Ind Co Ltd 指向性スピーカ装置
DE4430167A1 (de) * 1994-08-25 1996-02-29 Wilhelm Goecke Greifvogelidentifikationssystem zum Schutz von Geflügel
WO1996014723A1 (fr) * 1994-11-08 1996-05-17 Duran B.V. Systeme de haut-parleurs a sensibilite directionnelle controlee
US5786760A (en) * 1995-03-08 1998-07-28 Suzuki; Tomohiko Alarm system with variable warning signal
DE19701186A1 (de) * 1996-01-12 1998-07-16 Fraunhofer Ges Forschung Interaktives Überwachungssystem

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
DATABASE WPI Derwent World Patents Index; Class T04, AN 1993-023236/03 *
DATABASE WPI Derwent World Patents Index; Class V06, AN 1994-298523/37 *

Cited By (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006003174A2 (fr) * 2004-07-02 2006-01-12 Tda Armements S.A.S Systeme de protection sonore deployable
WO2006003174A3 (fr) * 2004-07-02 2006-04-20 Tda Armements Sas Systeme de protection sonore deployable
US7450472B2 (en) 2004-07-02 2008-11-11 Tda Armements S.A.S. Deployable audible protection
FR2872672A1 (fr) * 2004-07-02 2006-01-06 Tda Armements Sas Soc Par Acti Systeme de protection sonore deployable
WO2010023253A1 (fr) * 2008-08-28 2010-03-04 Sa Speir Aviation Limited Système permettant d’éviter une collision avec des oiseaux
US20100128123A1 (en) * 2008-11-21 2010-05-27 Bosch Security Systems, Inc. Security system including less than lethal deterrent
US9779598B2 (en) * 2008-11-21 2017-10-03 Robert Bosch Gmbh Security system including less than lethal deterrent
US9185476B2 (en) 2009-09-11 2015-11-10 Bose Corporation Automated customization of loudspeakers
US20120213387A1 (en) * 2011-02-18 2012-08-23 David Edwards Blore Acoustic Horn Gain Managing
US9049519B2 (en) * 2011-02-18 2015-06-02 Bose Corporation Acoustic horn gain managing
CN103392348A (zh) * 2011-02-18 2013-11-13 伯斯有限公司 声号筒增益管理
CN103392348B (zh) * 2011-02-18 2016-08-10 伯斯有限公司 声号筒增益管理
JP2013085538A (ja) * 2011-10-21 2013-05-13 East Japan Railway Co カラス忌避システム
WO2015127292A1 (fr) * 2014-02-20 2015-08-27 Turtle Beach Corporation Appareil et procédés ultrasonores de dissuasion d'intrusion
EP3183603B1 (fr) 2014-08-21 2020-02-12 IdentiFlight International, LLC Détection et identification d'oiseau ou de chauve-souris pour atténuation de risque d'éolienne
EP3714690A1 (fr) * 2014-08-21 2020-09-30 IdentiFlight International, LLC Détection et identification d'oiseaux ou de chauve-souris pour atténuer les risques d'une éolienne
US11751560B2 (en) 2014-08-21 2023-09-12 Identiflight International, Llc Imaging array for bird or bat detection and identification
EP3183603A4 (fr) * 2014-08-21 2018-04-25 IdentiFlight International, LLC Détection et identification d'oiseau ou de chauve-souris pour atténuation de risque d'éolienne
US11555477B2 (en) 2014-08-21 2023-01-17 Identiflight International, Llc Bird or bat detection and identification for wind turbine risk mitigation
US11544490B2 (en) 2014-08-21 2023-01-03 Identiflight International, Llc Avian detection systems and methods
US10519932B2 (en) 2014-08-21 2019-12-31 Identiflight International, Llc Imaging array for bird or bat detection and identification
US10920748B2 (en) 2014-08-21 2021-02-16 Identiflight International, Llc Imaging array for bird or bat detection and identification
US10883473B2 (en) 2014-08-21 2021-01-05 Identiflight International, Llc Bird or bat detection and identification for wind turbine risk mitigation
GB2531059B (en) * 2014-10-10 2019-04-03 Scarecrow Group Ltd Bird scaring apparatus
GB2531059A (en) * 2014-10-10 2016-04-13 Scarecrow Bio-Acoustic Systems Ltd Bird scaring apparatus
US10645919B2 (en) 2016-06-01 2020-05-12 Daniel GIANGRASSO Bird deterrent
CN105875587A (zh) * 2016-06-24 2016-08-24 中国科学院上海高等研究院 目标驱离装置及基于所述目标驱离装置的目标驱离方法
WO2018006132A1 (fr) * 2016-07-08 2018-01-11 Commonwealth Scientific And Industrial Research Organisation Système de répulsion d'organismes nuisibles
RU2729972C1 (ru) * 2017-07-14 2020-08-13 Фраунхофер-Гезелльшафт Цур Фердерунг Дер Ангевандтен Форшунг Е.Ф. Громкоговоритель
WO2019023106A1 (fr) * 2017-07-24 2019-01-31 College Of William And Mary Systèmes et procédés de réduction de risques de collision avec un oiseau
GB2610175A (en) * 2021-08-23 2023-03-01 Siemens Mobility Ltd Trespassing deterrence

Also Published As

Publication number Publication date
AU4959900A (en) 2001-02-19
NZ336109A (en) 2001-11-30

Similar Documents

Publication Publication Date Title
Surlykke et al. Echolocating bats emit a highly directional sonar sound beam in the field
WO2001008478A1 (fr) Systeme de dissuasion et appareil acoustique
US8248473B2 (en) Robotic sentry with low dispersion acoustic projector
Jakobsen et al. Intensity and directionality of bat echolocation signals
Moss et al. Probing the natural scene by echolocation in bats
Jakobsen et al. Vespertilionid bats control the width of their biosonar sound beam dynamically during prey pursuit
Kounitsky et al. Bats adjust their mouth gape to zoom their biosonar field of view
US11793190B1 (en) Automatic animal detection and deterrent system
Faure et al. The gleaning attacks of the northern long-eared bat, Myotis septentrionalis, are relatively inaudible to moths
US9775337B2 (en) Methods and systems for directing birds away from equipment
Obrist et al. What ears do for bats: a comparative study of pinna sound pressure transformation in Chiroptera
US9474265B2 (en) Methods and systems for directing birds away from equipment
Geipel et al. Perception of silent and motionless prey on vegetation by echolocation in the gleaning bat Micronycteris microtis
Brinkløv et al. Echolocation call intensity and directionality in flying short-tailed fruit bats, Carollia perspicillata (Phyllostomidae)
US6653971B1 (en) Airborne biota monitoring and control system
US20150230450A1 (en) Ultrasonic intrusion deterrence apparatus and methods
KR101251867B1 (ko) 농작물 보호를 위한 야생동물 적응화 퇴치 장치, 그리고 야생동물 적응화 퇴치 장치를 위한 제어 단말
Jakobsen et al. Dynamics of the echolocation beam during prey pursuit in aerial hawking bats
Yorzinski et al. Birds adjust acoustic directionality to beam their antipredator calls to predators and conspecifics
JP2004507767A5 (fr)
Hulgard et al. Big brown bats (Eptesicus fuscus) emit intense search calls and fly in stereotyped flight paths as they forage in the wild
Boonman et al. Intensity control during target approach in echolocating bats; stereotypical sensori-motor behaviour in Daubenton's bats, Myotis daubentonii
WO2014085327A1 (fr) Procédés et systèmes pour éloigner des oiseaux d'un équipement
Jakobsen et al. Directionality of nose-emitted echolocation calls from bats without a nose leaf (Plecotus auritus)
KR20210101423A (ko) 레이더를 사용한 조류 퇴치 시스템

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 BY CA CH CN CR CU CZ DE DK DM DZ EE 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 NO NZ PL PT RO RU SD SE SG SI SK SL TJ TM TR TT TZ UA UG US UZ VN YU ZA ZW

AL Designated countries for regional patents

Kind code of ref document: A1

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

DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
121 Ep: the epo has been informed by wipo that ep was designated in this application
WWE Wipo information: entry into national phase

Ref document number: 49599/00

Country of ref document: AU

WWE Wipo information: entry into national phase

Ref document number: 09980414

Country of ref document: US

REG Reference to national code

Ref country code: DE

Ref legal event code: 8642

122 Ep: pct application non-entry in european phase
NENP Non-entry into the national phase

Ref country code: JP