EP0764316B1 - Überwachungs- und warnungsvorrichtung zur vermutung von körpern in gefahr in einem schwimmbecken - Google Patents

Überwachungs- und warnungsvorrichtung zur vermutung von körpern in gefahr in einem schwimmbecken Download PDF

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Publication number
EP0764316B1
EP0764316B1 EP95918704A EP95918704A EP0764316B1 EP 0764316 B1 EP0764316 B1 EP 0764316B1 EP 95918704 A EP95918704 A EP 95918704A EP 95918704 A EP95918704 A EP 95918704A EP 0764316 B1 EP0764316 B1 EP 0764316B1
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EP
European Patent Office
Prior art keywords
swimming pool
bodies
zones
monitoring device
monitoring
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Expired - Lifetime
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EP95918704A
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English (en)
French (fr)
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EP0764316A1 (de
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Edouard Menoud
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    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
    • G08B21/02—Alarms for ensuring the safety of persons
    • G08B21/08—Alarms for ensuring the safety of persons responsive to the presence of persons in a body of water, e.g. a swimming pool; responsive to an abnormal condition of a body of water
    • G08B21/082—Alarms for ensuring the safety of persons responsive to the presence of persons in a body of water, e.g. a swimming pool; responsive to an abnormal condition of a body of water by monitoring electrical characteristics of the water

Definitions

  • the present invention relates to a device not mandatory monitoring of the absence of bodies in danger in a pool. There is presumption and triggering of a alert when absence monitoring is no longer checked.
  • the reaction time is important and each ten seconds before the alert can be decisive for the person in danger.
  • Figure 2 shows the wave absorption coefficients electromagnetic measured in pure water.
  • the weakening per cm of water crossing As an indication, the weakening on 10m of water and at the wavelength of 0.8 microns, the limit of the visible infrared is 0.000043.
  • the coefficients low attenuation corresponding to the blue-violet zone are seriously affected by the turbidity of the water when many bathers evolve.
  • the swimming pool is observed through portholes and that it is busy, it can be difficult, if not impossible, to discern a bather placed at 25 or 30m.
  • US-A-5043705 is written in very general terms and is based on measuring the distance between the sensor and the possible obstacle to identify its presence. he mentions various components including a sonar well suited for detect a body placed between the sonar and a wall but which will have enormous difficulty in detecting a body placed nearby of a wall the latter creating many reflections. he the same goes for radio frequency detection, the propagation is very problematic in water. This patent also mentions lasers without specifying the mode of operation. In addition, it lists general methods noise elimination because its objective is the identification of the stationary object, while our proposition is based on the permanent detection of a fixed pattern, whose properties mathematics are known, and whose absence alone allows generate an alarm whatever the contour of the obstacle.
  • the present invention is defined by the claims and is based on the certainty of detection of the absence of obstacles through the use of the barrier principle luminous uses IT and in particular so-called image processing algorithms and offers solutions allowing automatic monitoring of the pool for the purpose reduce the time elapsed before the alert and improve the traditional surveillance.
  • FIG. 1 represents a swimming pool equipped with two cameras 1, each sweeping the surfaces located at the bottom of the walls.
  • the observed surfaces are marked with patterns allowing to delimit work areas and ensure vision through cameras. Patterns can take the form a horizontal line 2 or even a succession of zones contrasting narrow 2 or wider allowing the monitored volume 4 to be increased or isolated patterns 3. Failure to detect these patterns has the effect of release an alarm corresponding to the presence of an obstacle or when the surveillance system is switched off.
  • the first case is particularly well suited for large swimming pools depth that is to say when the feet of bathers do not only occasionally touch the bottom. In this case, it suffices observe the mobility and duration of obstructing objects upon detection of the pattern corresponding to the presence of a body on the bottom of the pool and release an alarm when the danger criteria are present.
  • the second treatment case is better suited to swimming pools of shallow depth.
  • it is a question of reconstituting the flat image of the bottom of the pool according to the information received from the various cameras and this by proceeding the intersection of the sets representing bodies (a little the way of a scanner). From this image it is possible to obtain additional information corresponding to the floor area and which is a function of the size of the bodies.
  • the proposed processing consists in associating with each of the pixels representing a part of a body, a new variable called "stillness".
  • the immobility of the pixel depends on the number of cycles corresponding to the observation of said pixel in the active state. This last active state corresponding to the presence of a body in danger.
  • Stillness grows so linear or not depending on the number of cycles where the pixel is active and decreases non-linearly when observed inactive, thus creating a phenomenon of afterglow.
  • An alarm can be generated when a number of pixels next to each other are the object of a high immobility this corresponding to a volume-time relationship that can be the object of a person in danger.
  • the number of cameras must be adapted depending on the size swimming pools or the desire to reduce the effects due to the obstruction of one or the other of them.
  • Figure 3 uses a light emitter 5.
  • the beam emitted 6 is reflected by a mirror 7 itself controlled by a motor 8.
  • the beam scans, depending on the rotation of the motor, the bottom of the pool, it is returned by a reflector (always in 9) to return to mirror 7 and is seized by a receiver placed next to the transmitter 5.
  • the light signals can be modulated in order to differentiate from ambient signals.

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  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Emergency Alarm Devices (AREA)
  • Alarm Systems (AREA)
  • Image Processing (AREA)

Claims (9)

  1. System für die überwachung von Schwimmbecken mit zumindest einer Überwachungsvorrichtung für die Abwesenheit von in einem Schwimmbecken in Gefahr befindlichen Körpern, bestehend aus einem Organ zur Beobachtung der kritischen Bereiche, wobei das benannte Beobachtungsorgan an einen Computer angeschlossen ist, der die empfangenen Daten verarbeitet und in der Lage ist, das Nichtvorhandensein von eingetauchten, bewegungslosen Körpern neben anderen Körpern zu erkennen und die Gefahr zu melden, wenn die Dauer der Bewegungslosigkeit ein gegebenes Bewertungsmerkmal überschreitet, und wobei das benannte Organ zur Beobachtung der kritischen Bereiche im sichtbaren Wellenbereich arbeitet und aus Sendern und Empfängern zusammengesetzt ist, die so eingerichtet sind, dass sich der beobachtete Bereich räumlich nahe dem Boden des Schwimmbeckens und parallel zu diesem befindet, während das benannte System ebenfalls zumindest ein aus kontrastierenden Bereichen zusammengesetztes, ortsfestes Muster umfasst, das auf zumindest einem Teil der Schwimmbeckenwandung angebracht oder dazu bestimmt ist, angebracht zu werden, und das benannte System dadurch gekennzeichnet ist, dass es das benannte Nichtvorhandensein durch die ununterbrochene Erkennung des benannten Musters überwacht.
  2. Überwachungssystem gemäss Anspruch 1, dadurch gekennzeichnet, dass aus Gründen der Sicherheit ein Organ eingebaut wird, das zu erkennen und zu melden gestattet, ob die Lichtstrahlen den zu beobachtenden Bereich durchdringen können oder nicht, sei es wegen des Vorhandenseins eines Körpers oder aus irgend einem anderen, mit der Sichtweite verbundenen Grund.
  3. Überwachungssystem gemäss Ansprüchen 1 und 2, dadurch gekennzeichnet, dass das Organ zur Erkennung des Vermögens der Strahlen, die zu beobachtenden Bereiche zu durchdringen, aus einem Organ besteht, das die Grenzen der benannten, zu beobachtenden Bereiche ausmachen kann und als eine Vielzahl von Lichtschranken, deren Elemente auf jeder Seite der zu beobachtenden Bereiche angeordnet sind, oder von Rückstrahlschranken, deren Rückstrahler an der den Empfängern gegenüberliegenden Seite angeordnet sind, gestaltet sein kann.
  4. Überwachungssystem gemäss Ansprüchen 1 bis 3, dadurch gekennzeichnet, dass die Lichtsignalsender aus Scheinwerfern oder einfacher aus Projektoren auch für das natürliche Tageslicht oder noch aus am Umfang des Schwimmbeckens angebrachten Leuchtgirlanden bestehen.
  5. Überwachungssystem gemäss Ansprüchen 1 bis 4, dadurch gekennzeichnet, dass die Empfänger der Lichtschranken an verschiedenen Punkten konzentriert und so eingerichtet sind, dass ihr mechanisches oder elektrisches Bereichsabtastorgan es ihnen gestattet, die Grenzen der gewünschten Bereiche zu beobachten.
  6. überwachungssystem gemäss Ansprüchen 1 bis 5, dadurch gekennzeichnet, dass die Lichtempfänger aus Videokameras mit einem Computerprogramm bestehen, das die gewünschten, begrenzten Bereiche bearbeiten kann.
  7. überwachungssystem gemäss Ansprüchen 1 bis 6, dadurch gekennzeichnet, dass die verschiedenen, unter unterschiedlichen Winkeln aufgenommenen Bilder überlagert werden, um ein neues Bild zu erhalten, das der Draufsicht des Schwimmbeckenbodens entspricht und in der die Fläche von Körpern am Boden ersichtlich ist, um als Verarbeitungsgrundlage für das Vorhandensein oder Nichtvorhandensein von eingetauchten, bewegungslosen Körpern zu dienen.
  8. Überwachungssystem gemäss Ansprüchen 1 bis 7, dadurch gekennzeichnet, dass eine Vorrichtung zur überwachung des einwandfreien Funktionierens der Grundausrüstung den ausgesendeten Strahlen eine periodische Veränderung eines Teiles dieser Strahlen überlagert und dass eine Vorrichtung zur Prüfung des Ergebnisses dieser Veränderung jede Fehlerhaftigkeit oder Nichtwahrnehmung dieser Veränderung durch die Grundausrüstung meldet.
  9. Überwachungssystem gemäss Ansprüchen 1 bis 8, dadurch gekennzeichnet, dass zusätzlich zu den unter dem Wasserspiegel angeordneten Erkennungsorganen andere Erkennungsorgane wie Kameras ausserhalb des Wassers angeordnet sind und es ermöglichen, die zur Erkennung der Gefahren beitragenden Daten zu vermehren.
EP95918704A 1994-06-09 1995-06-02 Überwachungs- und warnungsvorrichtung zur vermutung von körpern in gefahr in einem schwimmbecken Expired - Lifetime EP0764316B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CH1847/94 1994-06-09
CH01847/94A CH691151A5 (fr) 1994-06-09 1994-06-09 Dispositif de surveillance et d'alerte de la présence de corps en danger dans une piscine.
PCT/IB1995/000426 WO1995034056A1 (fr) 1994-06-09 1995-06-02 Dispositif de surveillance et d'alerte de la presomption de corps en danger dans une piscine

Publications (2)

Publication Number Publication Date
EP0764316A1 EP0764316A1 (de) 1997-03-26
EP0764316B1 true EP0764316B1 (de) 1998-10-21

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EP95918704A Expired - Lifetime EP0764316B1 (de) 1994-06-09 1995-06-02 Überwachungs- und warnungsvorrichtung zur vermutung von körpern in gefahr in einem schwimmbecken

Country Status (9)

Country Link
US (1) US5886630A (de)
EP (1) EP0764316B1 (de)
JP (1) JPH10504860A (de)
AT (1) ATE172568T1 (de)
AU (1) AU2452895A (de)
CA (1) CA2192236A1 (de)
CH (1) CH691151A5 (de)
DE (1) DE69505528T2 (de)
WO (1) WO1995034056A1 (de)

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FR2741370B1 (fr) * 1995-11-16 1998-05-29 Poseidon Systeme de surveillance d'une piscine pour la prevention des noyades
FR2763459B1 (fr) * 1997-05-15 1999-07-23 Poseidon Systeme de surveillance d'une piscine pour la prevention des noyades
US6091322A (en) * 1999-09-15 2000-07-18 Daimlerchrysler Corporation Trunk monitoring system
RU2358324C2 (ru) 2002-08-08 2009-06-10 Клер-Лиз Бужон Устройство обеспечения безопасности и спасения для плавательных бассейнов и парков отдыха и развлечений
DE10261506A1 (de) * 2002-12-23 2004-07-22 Robert Poeppler System zur Überwachung eines Schwimmbeckens
US7724133B2 (en) * 2006-07-27 2010-05-25 S. R. Smith Llc Pool video safety, security and intrusion surveillance and monitoring system
US7839291B1 (en) * 2007-10-02 2010-11-23 Flir Systems, Inc. Water safety monitor systems and methods
WO2009149428A1 (en) 2008-06-05 2009-12-10 Hawkeye Systems, Inc. Above-water monitoring of swimming pools
CN101650870B (zh) * 2009-09-04 2011-06-08 李剑 一种游泳池安全监控方法及装置
JP5653201B2 (ja) * 2010-12-15 2015-01-14 新日鉄住金ソリューションズ株式会社 情報処理システム、その制御方法及びプログラム
US9388595B2 (en) 2012-07-10 2016-07-12 Aqua Products, Inc. Pool cleaning system and method to automatically clean surfaces of a pool using images from a camera
KR101320864B1 (ko) * 2013-04-29 2013-10-23 주식회사 이도링크 형상체를 활용한 모니터링영역 내의 외부 객체 유무 판별방법
US9928719B1 (en) * 2013-10-08 2018-03-27 Dorothy Lee Webb Life guard pool patrol
JP6281838B2 (ja) * 2013-11-29 2018-02-21 株式会社石井鐵工所 水中検出装置
US9666054B2 (en) * 2014-07-11 2017-05-30 Michelle Anna MATKO Alert system for children within proximity of a pool or water
US20160037138A1 (en) * 2014-08-04 2016-02-04 Danny UDLER Dynamic System and Method for Detecting Drowning
US9506957B1 (en) 2014-08-05 2016-11-29 Aaron Neal Branstetter Floating apparatus for alerting people of the presence of voltage in water
US10102731B1 (en) * 2015-04-02 2018-10-16 Chris Aronchick Camera system that identifies potential drowning situation, activates auditory and visual alarm, launches life preserver and/or protective netting, and alerts homeowner and/or EMS
WO2018037418A1 (en) * 2016-08-25 2018-03-01 Zinger Meni Menashe Sensor system and method
US10181249B2 (en) * 2016-09-07 2019-01-15 Seal Innovation, Inc. Systems, methods and computer program products for detecting a presence of an object in a body of water
EP3776505A4 (de) * 2018-04-16 2022-01-05 Lynxight Ltd. Verfahren und vorrichtung zur erkennung von ertrinken
US10789826B2 (en) * 2018-10-12 2020-09-29 International Business Machines Corporation Real-time safety detection and alerting
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Also Published As

Publication number Publication date
AU2452895A (en) 1996-01-04
WO1995034056A1 (fr) 1995-12-14
EP0764316A1 (de) 1997-03-26
DE69505528T2 (de) 1999-04-22
CA2192236A1 (fr) 1995-12-14
CH691151A5 (fr) 2001-04-30
DE69505528D1 (de) 1998-11-26
JPH10504860A (ja) 1998-05-12
ATE172568T1 (de) 1998-11-15
US5886630A (en) 1999-03-23

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