WO2006003174A2 - Systeme de protection sonore deployable - Google Patents
Systeme de protection sonore deployable Download PDFInfo
- Publication number
- WO2006003174A2 WO2006003174A2 PCT/EP2005/053097 EP2005053097W WO2006003174A2 WO 2006003174 A2 WO2006003174 A2 WO 2006003174A2 EP 2005053097 W EP2005053097 W EP 2005053097W WO 2006003174 A2 WO2006003174 A2 WO 2006003174A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- sources
- sound
- signals
- phase
- deployment
- 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
Links
Classifications
-
- 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
- G10K15/00—Acoustics not otherwise provided for
- G10K15/04—Sound-producing devices
Definitions
- the invention relates to an acoustic protection system, for securing a determined area and remote control of an individual or a group of individuals in this area and having a potentially hostile behavior. It goes into the more general context of protection devices.
- the current sound protection devices have certain well-known disadvantages, particularly related to the low frequencies used.
- a first disadvantage lies in the difficulties that arise when one wants to generate very high sound levels, of the order of 13OdB, necessary to ensure its effectiveness to the device. This operation generally requires the use of bulky and heavy equipment, such as huge loudspeakers, whose deployment and rapid implementation are unlikely.
- a second drawback is the lack of directivity of acoustic protection devices using compact equipment forming a single acoustic source.
- the insonification diagram covers an extended area and can cover in particular the space where the user of the system is placed. This disadvantage is reflected in a difficult control of collateral effects.
- the present invention aims to overcome the aforementioned drawbacks, and in particular to provide a system for easy handling and rapid deployment, while ensuring accurate control of acoustic levels issued and the location and size of areas insonification. It is thus possible to define in the zone of interest, forbidden zones subjected to intense insonification, but also zones "quiet", subject to insonification of low intensity, for the use of operators who implement the device.
- the subject of the invention is a deployable sound protection device comprising a plurality of compact electroacoustic networked sources whose emissions are combined in phase so as to obtain an insonification having the desired diagram.
- the system according to the invention advantageously comprises means making it possible to know the relative position of the different electroacoustic sources and to determine the desired phase combination law.
- the system according to the invention also has the advantage of using a source of electrical energy available elsewhere.
- the system still has the advantage of being simple to deploy, the positioning of the various electroacoustic sources on the ground does not necessarily require great precision.
- FIG. 1 a schematic diagram showing the elements of the system according to the invention
- FIG. 2 a schematic illustration of the method for determining the relative position of the electroacoustic sources.
- the system according to the invention comprises N sound sources distributed in different locations of the area of interest.
- the sound sources are constituted by passive electroacoustic sources 11, powered by a low frequency external electrical signal. They typically consist of a transducer and a sound box.
- the transducer can be for example loudspeaker of high power, intended for the reproduction of low frequencies and mounted on a suitable speaker.
- the sound box is made of rigid materials and air-tight. It may for example be of the "Helmholtz cavity” type, or "quarter wave” resonator tube.
- Such speakers have the advantage of being easily reproducible and allow the realization of several sources with substantially identical performance. But it is also possible to use other types of transducers, such as sonar transducers, for example, by adapting the frequency of these transducers to the needs.
- the electroacoustic generators which constitute the N sources 11 are attacked by electrical signals synthesized by a high power generator 12 which delivers an electrical signal for each source, from the same reference signal.
- the signals intended for each of the sources are out of phase with each other.
- the phase shifts are made by a phase shifter device which can be incorporated in the generator or be a separate element.
- the phase-shifting device makes it possible to apply an adjustable phase to each signal.
- N sourcesi 1 are also connected to the generator, for example by means of two-wire electrical links 13. The links between sources and generator being electrical connections, they are not prone to weakening and can therefore be several tens of meters.
- this reference power signal into N phase-adjustable signals can be performed by passive means such as transformers, adjustable induction coils or capacitors. But they can also more advantageously be made by well-known active means and commercially available.
- the signals delivered to the sound sources 11 are necessarily signals of high power, of the order of several hundred to several thousand watts, which is why the generator is itself a device of very high power which requires a power supply 14 sized Consequently.
- the generator may for example be powered by the local electrical distribution network, 220V - 50 Hz for example, or by one or more mobile generators.
- the system according to the invention therefore has the advantage of physically dissociating the sound sources 11 to be deployed on the energy means area. This has the consequence of making the sources more easily manipulated than in the known systems of the prior art.
- the structure of the system according to the invention has the advantage of separating the production of high power signals which is performed centrally by the generator 14, the production of the sound signals produced by the electroacoustic sources 11.
- the electroacoustic sources are less heavy and therefore easier to deploy on the area of interest.
- the system according to the invention also comprises a computer 15 with a user interface.
- This calculator is in particular responsible for calculating the value of the phase shift to be applied to each of the signals from the generator 14, as a function of the desired acoustic emission diagram.
- the implementation of the system according to the invention is achieved by the deployment on the area of interest of the various electroacoustic sources 11, their connection to the generator 12 and the connection of the generator to the computer 15 and to a source of electrical energy 14.
- the system is then turned on, each acoustic source is driven by an electrical signal having a given phase relative to the reference signal.
- An array of acoustic sources is thus formed, the operation of which can be described in a simplified manner as follows. It is assumed that the N electroacoustic sources are point sources with respect to the wavelength of the emitted signal, it is considered that the emitted signal is pure sinusoidal.
- the sources being arranged on a ground they are localized by their relative coordinates (x1 y1 z1), (x2 y2 z2) (xn yn zn).
- ki, k2,... K N are integers which can in particular be determined as a function of the position of the different sources 11 relative to one another.
- a is a constant term, which one can simply choose equal to zero.
- the computer of the device according to the invention can very simply calculate the phase corrections to be made to obtain a signal of maximum amplitude in a zone surrounding point C.
- phase laws for obtaining a network of sound sources with an insonification diagram presenting maxima and minima is not described in this document. It uses numerical computation techniques similar to those used in the field of well-known radar antennas of radar and acousticians (underwater and aerial acoustics). These techniques perform a numerical optimization to find control laws maximizing the signal at one point, under minimization constraint at other points. Among these methods there may be mentioned by way of example the so-called "phase only nulli ⁇ g" methods used for the electronic scanning antenna of radars.
- the networking of several compact electroacoustic sources makes it possible to benefit from a gain in sound volume. Indeed, for N networked sources, it is possible to expect in a known manner a maximum associated gain factor equal in decibels to 20 Log (N). Networking also makes it possible to benefit from an increased directivity, knowing that, as a first approximation, the width of the radiation pattern is a function proportional to the wavelength of the acoustic signal and inversely proportional to the size of the network.
- the principles of implementation and operation of the system according to the invention appear relatively simple. This simplicity advantageously meets the requirements of speed of implementation of the device in case of need for rapid action.
- the deployment of sources on the area of interest is subject only to the requirement of positioning easy to satisfy. It is sufficient in particular that the sources are positioned so that the spacing between sources is at least equal to half a wavelength, so as to limit the coupling problems between sources and thus ensure optimum operation of the network .
- S1 sources, S2, S N should also preferably be arranged on one side with respect to the base in order to avoid potential ambiguity issues.
- this positioning determines the width of the network constituted, which itself determines the directivity of this network along an axis perpendicular to (S1 S N ).
- ⁇ represents the 3 dB width of the radiation pattern expressed in radians, where ⁇ is the wavelength of the acoustic signal and the width of the grating.
- the system according to the invention performs, in a preferred embodiment, a location by acoustic propagation delay measurement and triangulation calculation, the principle of which is illustrated in FIG.
- a location by acoustic propagation delay measurement and triangulation calculation the principle of which is illustrated in FIG.
- the principle of measurement is described in the case of sources deployed on flat terrain This method of location remains of course generalizable.
- This method consists in measuring the distances between (Si, S 2 ), (Si, S 3 ), (S 1 , S N ), (S N , S 2 ), (S N , S 3 ), which defines the triangles (Si, S 2 , S N ) and (Si,
- the measurement method applied to the sources S 1 and S 2 taken as an example can be described by the following steps:
- the source includes a loudspeaker allowing the microphone function it is the loudspeaker that receives the wave emitted by S L
- the negative S 2 must include a separate microphone that can be put into service for operations location.
- the delay calculation operation is thus repeated as many times as the system comprises sources.
- the number of sources is necessarily very limited, less than twenty in practice.
- the computing load therefore remains limited both with regard to the location operation of the sources 11 and the calculation of the phase shift values to be applied to the different electrical signals exciting the sources.
- the system according to the invention also has the important advantage of allowing the formation of an insonification diagram having both active areas and quiet areas.
- the acoustic solution described above has the slight disadvantage of being sensitive to the wind. Indeed, the speed of propagation of sound in the air depends on various parameters (temperature, pressure ). The ultimate goal is to adjust the delay of these same acoustic signals to the area of interest, this measurement of delay is the most relevant parameter to measure.
- the only drawback lies in the disturbance brought to this measurement by the wind, whose directional vector at a given moment makes different angles with the vectors (S1, S2), (S1, SN).
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
- Circuit For Audible Band Transducer (AREA)
Abstract
Description
Claims
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US11/571,563 US7450472B2 (en) | 2004-07-02 | 2005-06-30 | Deployable audible protection |
| CA002571776A CA2571776A1 (fr) | 2004-07-02 | 2005-06-30 | Systeme de protection sonore deployable |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0407383 | 2004-07-02 | ||
| FR0407383A FR2872672B1 (fr) | 2004-07-02 | 2004-07-02 | Systeme de protection sonore deployable |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| WO2006003174A2 true WO2006003174A2 (fr) | 2006-01-12 |
| WO2006003174A3 WO2006003174A3 (fr) | 2006-04-20 |
Family
ID=34951655
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2005/053097 Ceased WO2006003174A2 (fr) | 2004-07-02 | 2005-06-30 | Systeme de protection sonore deployable |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US7450472B2 (fr) |
| CA (1) | CA2571776A1 (fr) |
| FR (1) | FR2872672B1 (fr) |
| WO (1) | WO2006003174A2 (fr) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2294544A4 (fr) | 2008-04-30 | 2013-01-16 | Ecolab Inc | Pratiques de nettoyage et de désinfection d'installation de soins de santé validées |
| US8639527B2 (en) | 2008-04-30 | 2014-01-28 | Ecolab Usa Inc. | Validated healthcare cleaning and sanitizing practices |
| USRE48951E1 (en) | 2015-08-05 | 2022-03-01 | Ecolab Usa Inc. | Hand hygiene compliance monitoring |
| PL2441063T3 (pl) | 2009-06-12 | 2015-08-31 | Ecolab Usa Inc | Monitorowanie przestrzegania higieny rąk |
| US8403106B2 (en) * | 2010-03-25 | 2013-03-26 | Raytheon Company | Man-portable non-lethal pressure shield |
| US20110235465A1 (en) * | 2010-03-25 | 2011-09-29 | Raytheon Company | Pressure and frequency modulated non-lethal acoustic weapon |
| US20120113754A1 (en) * | 2010-11-09 | 2012-05-10 | Eminent Technology Incorporated | Active non-lethal avian denial infrasound systems and methods of avian denial |
| US20140210620A1 (en) | 2013-01-25 | 2014-07-31 | Ultraclenz Llc | Wireless communication for dispenser beacons |
| US8774368B2 (en) * | 2012-06-08 | 2014-07-08 | Avaya Inc. | System and method to use enterprise communication systems to measure and control workplace noise |
| EP3965084A1 (fr) | 2017-03-07 | 2022-03-09 | Ecolab USA Inc. | Surveillance de modules pour distributeurs d'hygiène des mains |
| US10529219B2 (en) | 2017-11-10 | 2020-01-07 | Ecolab Usa Inc. | Hand hygiene compliance monitoring |
| US11284333B2 (en) | 2018-12-20 | 2022-03-22 | Ecolab Usa Inc. | Adaptive route, bi-directional network communication |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4922468A (en) * | 1989-06-02 | 1990-05-01 | Sonalysts, Inc. | Method and apparatus for controlling aquatic population in defined areas |
| FR2786651B1 (fr) * | 1998-11-27 | 2002-10-25 | Commissariat Energie Atomique | Transducteur ultrasonore de contact, a elements multiples |
| NZ336109A (en) * | 1999-06-03 | 2001-11-30 | Ind Res Ltd | Deterrent system for animals or intruders using steerable acoustic beam |
| WO2002078388A2 (fr) * | 2001-03-27 | 2002-10-03 | 1... Limited | Procede et appareil permettant de creer un champ acoustique |
| IL158837A (en) * | 2003-11-11 | 2009-07-20 | Electro Optics Res & Dev Ltd | Controlled acoustic beam generator for audience control |
-
2004
- 2004-07-02 FR FR0407383A patent/FR2872672B1/fr not_active Expired - Fee Related
-
2005
- 2005-06-30 CA CA002571776A patent/CA2571776A1/fr not_active Abandoned
- 2005-06-30 WO PCT/EP2005/053097 patent/WO2006003174A2/fr not_active Ceased
- 2005-06-30 US US11/571,563 patent/US7450472B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| WO2006003174A3 (fr) | 2006-04-20 |
| FR2872672A1 (fr) | 2006-01-06 |
| US20080225644A1 (en) | 2008-09-18 |
| US7450472B2 (en) | 2008-11-11 |
| FR2872672B1 (fr) | 2007-06-08 |
| CA2571776A1 (fr) | 2006-01-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2006003174A2 (fr) | Systeme de protection sonore deployable | |
| FR3010836A1 (fr) | Dispositif de reflexion d'une onde, dispositif mobile, et systeme | |
| FR2507849A1 (fr) | Appareil acoustique a diagramme de reponse directionnel | |
| US20050276163A1 (en) | Ultrasonic ranging system and method thereof in air by using parametric array | |
| EP2159598B1 (fr) | Méthode de géneration de faux échos vers un détecteur qui émet un signal puis qui détecte des échos du signal | |
| EP3803452A2 (fr) | Procédé de détermination d'une caractéristique d'un récepteur dans un milieu, et système mettant en oeuvre ce procédé | |
| EP3828586B1 (fr) | Radar, engin volant comportant un tel radar, procédé de traitement dans un radar embarqué dans un engin volant et programme d'ordinateur associé | |
| FR2985386A1 (fr) | Procede de calibrage d'un systeme d'emission d'ondes de forte puissance, procede d'emission par un tel systeme et systeme d'emission associe | |
| EP1728409B1 (fr) | Dispositif de sonorisation a contrôle de rayonnement géométrique et électronique | |
| FR2985385A1 (fr) | Procede et systeme d'emission d'une onde electromagnetique radiofrequence | |
| EP3729111A1 (fr) | Systeme de detection interferometrique de foudre | |
| FR3087608A1 (fr) | Enceinte acoustique et procede de modulation pour une enceinte acoustique | |
| EP4092928B1 (fr) | Antenne réseau planaire | |
| EP2711729B1 (fr) | Antenne réseau pour l'émission d'ondes électromagnétiques et procédé de détermination de la direction d'une cible | |
| EP1233282B1 (fr) | Système à émission et réception réparties, notamment radar à émission synthétique et à formation de faisceau par le calcul | |
| EP0114547A2 (fr) | Système acoustique à antennes paramétriques multifaisceaux | |
| BE1031268B1 (fr) | Capteur radar à micro-ondes de formation d'image | |
| EP0172094B1 (fr) | Système d'exploitation de plusieurs radars voisins | |
| FR2743894A1 (fr) | Dispositif de mesure angulaire de la position d'une cible pour radar a impulsions electromagnetiques transitoires et radar en faisant application | |
| CA2407131A1 (fr) | Procede, systeme et dispositif d'alarme base sur l'emission de signaux acoustiques | |
| EP3895350A1 (fr) | Systeme pour incapaciter une electronique d'au moins un porteur | |
| EP3521851A1 (fr) | Dispositif et procédé d'émission/réception de signaux radioélectriques | |
| EP4125227A1 (fr) | Antenne reseau | |
| EP3707528A1 (fr) | Dispositif de stimulation radioelectrique par panneau rayonnant | |
| EP4000131A1 (fr) | Antenne reseau multi-panneaux |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| AK | Designated states |
Kind code of ref document: A2 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 KM KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NA NG NI NO NZ OM PG PH PL PT RO RU SC SD SE SG SK SL SM 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: A2 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 IS IT LT 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 |
|
| DPEN | Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed from 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: 2571776 Country of ref document: CA |
|
| NENP | Non-entry into the national phase |
Ref country code: DE |
|
| WWW | Wipo information: withdrawn in national office |
Country of ref document: DE |
|
| 122 | Ep: pct application non-entry in european phase | ||
| WWE | Wipo information: entry into national phase |
Ref document number: 11571563 Country of ref document: US |