EP0861481B1 - Systeme de surveillance d'une piscine pour la prevention des noyades - Google Patents
Systeme de surveillance d'une piscine pour la prevention des noyades Download PDFInfo
- Publication number
- EP0861481B1 EP0861481B1 EP96938302A EP96938302A EP0861481B1 EP 0861481 B1 EP0861481 B1 EP 0861481B1 EP 96938302 A EP96938302 A EP 96938302A EP 96938302 A EP96938302 A EP 96938302A EP 0861481 B1 EP0861481 B1 EP 0861481B1
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- EP
- European Patent Office
- Prior art keywords
- swimming pool
- images
- pool
- detection means
- water
- 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.)
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Images
Classifications
-
- 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 invention relates to a system for monitoring a swimming pool to prevent drowning.
- swimming pool surveillance is either non-existent, or carried out by human surveillance. Such a surveillance is a difficult task requiring sustained attention and causing nervous fatigue of people, especially lifeguards, to which it falls. Indeed, in addition to the limitations inherent in any system based on human intervention, for example decreased alertness due to fatigue or distraction monitoring of swimming pools is made very difficult in due to the reflection of light on the surface of the agitated water, phenomenon which makes it difficult to visually locate an immobile body, except a few meters deep. The problem of monitoring swimming pools arises especially for swimming pools welcoming the public.
- the risk of drowning in swimming pools mainly origin is in the fact that a swimmer does not know how to swim sufficiently, for example in the case of a young child, or in the fact that a swimmer is unwell.
- the lifeguard or people near the troubled bather, have their attention attracted to the bather himself, in particular due to the agitation of his arms when he tries to stay on the surface; on the other hand, in the second case, there is loss of consciousness of the swimmer without the attention of surveillance or the environment is drawn.
- the bather has an exercise respiratory movement reflex and in this case his lungs get fill with water, resulting in immediate loss of consciousness; or a reflex apnea occurs and a certain volume of air remains blocked in the lungs.
- the injured bather sinks towards the bottom but, more rarely, it sometimes floats without knowledge in a characteristic position just below the surface of the water.
- the signal obtained with a sonar incorporates the echoes provided by the pool walls and it is extremely difficult to eliminate the noise signal thus obtained for ability to detect the signal corresponding to the submerged body of a drowned person.
- the sonar essentially makes it possible to locate the body of a drowned by the volume of air it contains; if an accident victim has lungs filled with water, the signal obtained will not at all conform to that which we have the right to wait and may, even, not be spotted by the signal processing. We therefore see that such a system is not likely to give satisfaction.
- the object of the invention is to provide a system for monitoring of a swimming pool, which can trigger an alarm automatically alerting supervisors within a short time, when the behavior of a swimmer indicates a risk of drowning.
- a such a system must detect the beginning of drowning, but it is desirable to avoid nuisance trips by analyzing correct behavior of swimmers, especially to avoid a bad interpretation relating to the movement of a swimmer voluntarily diving and / or traveling in immersion.
- the invention also aims to describe such a device that can be installed without excessive costs in a swimming pool already built.
- the invention also aims to describe such a device, which is out of reach of pool users and which meets all security requirements.
- the invention finally has for aim of describing such a device which is capable of maintenance and easy maintenance that does not require emptying the pool.
- each detection means comprises at least minus a video camera arranged in a sealed waterproof compartment by a side wall of the pool, between the surface of the water of the swimming pool in operation and the bottom of said swimming pool; the waterproof compartment being below the surface of the water, one can provide that an anti-humidity module is disposed inside said waterproof compartment.
- the sealed compartment submerged has two video cameras, including observation fields each have a substantially equal opening angle or slightly greater than 90 ° and whose axes are substantially orthogonal in a substantially horizontal plane.
- means are used to multiplexing of electrical signals from the means of detection, these multiplexing means supplying the means of digitization; said digitizing means and the means of compression of digital data are advantageously made up by a video image digitization and compression card placed in a microcomputer in "multimedia" configuration.
- the means of temporary and permanent storage of digital image data at successive instants, the means of comparison between digitized images of the same body at successive instants, the means of estimating the trajectory and changes in a body's attitude and the means of decision are made up of the components of a microcomputer, in particular memory elements and central processing unit of this microcomputer, in which appropriate software has been loaded to allow it to run the operations indicated.
- the digitization means allow to digitize 25 images per second, these images being provided by detection means via the multiplexing means.
- the means of comparison of the digitized images between successive instants are suitable for taking into account only shapes, the dimensions of which correspond at least to those of a child, to eliminate nuisance alarms that may be caused by foreign bodies.
- These means of comparison are, moreover, arranged to isolate a shape and follow its path at instants successive.
- the means of estimation are suitable for determining, from the results of the means of comparison, the slow nature of a movement and / or immobility of a human body in the pool.
- the means of decision are suitable for triggering a alarm if the slow nature of the movement or the almost immobility of the body in the pool extends beyond a specified time, in especially after 15 seconds.
- the images which were used for the analyzes which led to the triggering of an alarm are recorded on the microcomputer hard drive so that it can be accessed at any time.
- one or more control screens are arranged near the lifeguard seats or in the premises of responsible for monitoring the pool, screens on which are displayed images of an area considered suspicious.
- the alarm can be given by an audible warning and / or visual, in particular with indication of the pool area in which a suspicious event occurs.
- the detection means are arranged each in a sealed enclosure vis-à-vis the pool water, of which a wall consists of a globe comprising zones, through which are acquired the information necessary to give the images bodies immersed in the pool water, and another wall of which is tightly crossed by cables carrying outwards from the pool, the signals supplied by the detection means.
- Wall, which the cables pass through can be fitted with a first connector removable waterproof connected to the first end of a waterproof sheath, the other end of which is connected to a second watertight fitting fixed on the bottom of a case, which crosses tightly the side wall of the swimming pool.
- the interior of the housing is in communication with the pool water and that the waterproof sheath is coiled in the housing so as to have a length at least equal to one that allows the enclosure to be taken out of the pool water without disassembly of the tight fitting fixed on the bottom of the case.
- the invention consists, apart from the provisions set out above, in a number of other provisions, of which it will be more explicit question below about an example nonlimiting described with reference to the accompanying drawing.
- the monitoring system of a swimming pool P comprises detection means D1, D2, D3 provided on the pool walls in places judiciously distributed to sweep the entire volume of the pool.
- the three detection means D1, D2, D3 are arranged, in the same horizontal plane, for example at a level of about 1.50 m below the water level in the operating pool.
- the detection means D1, D2, D3 are arranged with so that their fields of vision partially overlap so that leave no dead zones and sweep virtually the entire volume of the swimming pool. An element or a body located in the pool will therefore be seen by at least two detection means D1, D2, D3.
- These detection means are suitable for providing, under form of electrical signals, images of bodies submerged in water of the swimming pool.
- the detection means D1, D2, D3 are all identical and one of them, D1, will be described in detail below.
- the medium D1 includes two video cameras 1 and 2, preferably cameras "CCD" type electronics.
- the axes of the two cameras form a 90 ° angle between them and are symmetrical with respect to a plane perpendicular to the wall of the pool passing through the axis of the means of detection.
- the opening angle of the field of vision for each of the cameras 1 and 2 is greater than 90 ° and one of the edges of the field roughly coincides (plan view) with the pool wall, which carries the detector, so that, for all of the two cameras, the field of vision (seen in plan) is 180 ° with a central zone ⁇ , ⁇ , ⁇ respectively for the detection means D1, D2, D3 where there is a overlap of the fields of the two cameras.
- the detection means D2 is carried by the transverse wall 100 of the swimming pool P, which is adjacent to the large bath, at a point B of said wall 100 located in the median longitudinal plane of the swimming pool, while the detection means D1 and D3 are carried at A and C by the two walls longitudinal 101, 102 of the swimming pool, directly above the bottom zone inclined 103, which connects the small bath and the large bath, points A and C being in the vicinity of the median transverse plane of the swimming pool P.
- the observation cones of the two cameras of each detection means by designating by a1, a2 the cones of the cameras of the detection means D1, by b1, b2 those of the means of detection D2 and by c1, c2 those of the detection means D3.
- monitoring is volume since each camera has an observation cone, while in the state of the WO 95/34056, it was only possible to monitor a slice of water near the bottom.
- the field of each camera encroaches on a small angle e on the pool wall with which said camera is associated, this which reduces dead zones not covered by the observation of cameras.
- the cameras 1 and 2 are arranged in a globe 3, closed in a sealed manner and carried, as indicated below, by the wall 4 of the swimming pool.
- This wall 4 is crossed by a cylindrical duct 5, wherein is housed a cylindrical housing 7 containing a tubular sheath 8 which are arranged the electric wires 8a of connecting the cameras 1 and 2 to the microcomputer 9 management of the surveillance system of the swimming pool.
- the sheath 8 is wound in a helix along the wall of the housing 7 and its ends are secured, by watertight connections 20 and 24, respectively with the bottom 7 a of the housing 7 and with a bell 23 associated with a compartment 21, which will be defined below.
- the compartment 21 is waterproof; the bell 23 is assembled in a sealed manner on the compartment 21; the interior of the bell 23 is connected with the exterior of the housing 7 by the sheath 8.
- the two cameras 1 and 2 are oriented approximately 90 ° from each other, and their axes are substantially in a horizontal plane.
- the globe 3 is rounded to avoid any injury for a swimmer coming into contact with said globe.
- Globe 3 is molded from cast aluminum; front of the cameras 1 and 2, it has two circular orifices where one enchassé two lenses 1a, 2a, which cooperate with the objectives of the two cameras 1,2 respectively, to form "assemblies objectives"; the border of each lens forms a collar stuck in a circular recess of the globe.
- the lenses are made of a glass of high hardness to avoid any risk of deterioration; the design of the lenses 1 a , 2 a makes it possible to adapt the optical characteristics of the "objective assemblies" to the needs of the system.
- the conduit 5, which passes through the side wall 4 of the swimming pool, is produced by coring; the cylindrical housing 7 is placed there, the centering being carried out by two O-rings 90, 91.
- the seal 91 located on the swimming pool side has two holes, one in the vicinity of the low point and the other in the vicinity of the high point .
- a polymerizable resin is injected through the lower hole to form a gasket 6 between the duct 5 and the housing 7. After polymerization, the front face of the gasket 6 is finished, on the swimming pool side, by fitting a silicone seal 6 a .
- the housing 7 is intended to be filled with water from the pool.
- the cameras 1 and 2 are housed in the sealed compartment 21, one of whose faces pool hand consists of the globe 3, while the other side, the bottom side 7a, is defined by a cylindrical cup 21a, the free edge of which bears a peripheral flange 21 b .
- the globe 3 is fixed to the flange 21 b by means of screws, which cooperate with threaded bushings placed in bores provided in the thickness of the base 3 a of the globe 3 .
- the screwing of said screw causes compression of an annular seal 3b which seals the assembly.
- the bottom 21 c of the bowl 21 a carries an electronic card 92 to which the output wires of the cameras 1 and 2 are connected.
- the output of said electronic card passes through the bottom 21 c in a sealed manner which, on its external face, carries a female connector 93.
- the bottom 21 c carries, in addition, two valve fittings 94, 95 intended to cooperate with a nitrogen supply pipe, on the one hand, and with a vent pipe, on the other hand. It is thus possible, when the compartment 21 has been closed by assembling the globe 3 and the bowl 21 a , put the interior of the compartment under dry nitrogen to avoid oxidation, improve the life of the CCD cameras and prevent any problem of fogging; as soon as the pipes are disconnected, the valves of the fittings 94, 95 isolate the inside of the compartment 21 from the outside.
- screws 96 a is fixed on the flat end of the casing 7 opposite to the bottom 7 has a flange 96 intended to hide the edge of the core which is disposed the housing 7 as well as the area occupied by the gasket 6.
- the housing 7 has three peripheral bosses 7 b projecting towards the axis of the housing 7; in these bosses are inserted threaded sockets, which cooperate with screws 25; the heads of the screws 25 are supported on the peripheral rim 3 c of the globe 3.
- the bottom of the bell 23 carries a tight fitting 24 which ensures the fixing of the sheath 8 on the bell 23.
- the electrical cables 8a are threaded in the sheath 8 before fixing the bell 23 on the bottom 21 c of the bowl 21 a and the cables 8 a protrude behind the bottom 7 a of the housing 7, the seal at the level of the crossing of the bottom 7 a being ensured by the waterproof connection 20.
- a length of waterproof sheath is provided. 8 sufficient for the enclosure (3, 21, 21 a , 23) to be able to be detached from the wall of the swimming pool and reassembled on the edge of the swimming pool for the purposes of maintenance, repair or replacement.
- a pending thread for example a nylon thread, which in a known manner, acts as a "needle" for allowing the introduction of a cable, complementary or replacement, in the sheath 8 without it being necessary to disconnect the connector 20 and therefore to empty the pool: it suffices, in fact, to hook the new cable and a new "needle" to the wire nylon behind the bottom 7 a , to put the enclosure out of water (3, 21, 21 a , 23), to disassemble the bell 23.
- a pending thread for example a nylon thread, which in a known manner, acts as a "needle" for allowing the introduction of a cable, complementary or replacement, in the sheath 8 without it being necessary to disconnect the connector 20 and therefore to empty the pool: it suffices, in fact, to hook the new cable and a new "needle" to the wire nylon behind the bottom 7 a , to put the enclosure out of water (3, 21, 21 a , 23), to disassemble the bell 23.
- the same set of screws 25 can be used to maintain a sealing cover (not shown) of the housing 7 when the compartment has been removed (3, 21, 21 a ), the bell 23 having, beforehand, been tightly fixed on that of the faces of said cover, which is on the housing side.
- an anti-humidity module (not shown).
- the cables 8a, passing through the casing 7, are coaxial cables connected, via multiplexing means 10a, a microcomputer 9, for example of the type "IBM compatible" is arranged around a microphone -Processor PENTIUM on each cable 8a, establishing a continuous voltage to the corresponding 1,2 camera power and sends said camera on the cable 8 has a modulation which is the signal to be processed.
- a microcomputer 9 for example of the type "IBM compatible” is arranged around a microphone -Processor PENTIUM on each cable 8a, establishing a continuous voltage to the corresponding 1,2 camera power and sends said camera on the cable 8 has a modulation which is the signal to be processed.
- the separation of the DC component is ensured by demodulation means which supply only on the multiplexing means the signal emanating from the "CCD" type camera.
- the microcomputer 9 comprises a central processing unit 13, temporary storage means, or random access memory 11 a , permanent storage means, or hard disk 11 b , and a remote control card 14 capable of controlling warning means 15 or valves 16; moreover, it is connected to a control screen E, said screen being a touch screen allowing an operation command.
- the microcomputer 9 is in a "multimedia" configuration and is equipped with a video acquisition card 10 constituting means for digitizing the electrical signals supplied by the detection means D1, D2, D3, and means for compressing the data. digital image.
- the images, in the form of electrical signals, are received, by the demodulation means and the multiplexing means designated by 10 a as a whole, at the rate of 25 images per second, by the video acquisition card 10, which transforms them into digital images.
- Storage means 11 for digital image data at successive instants t, (t + 1), etc. are provided. These storage means 11 are constituted by memory means of the microcomputer 9, in particular internal random access memory means 11 a and the hard disk 11 b of the computer.
- Means of comparison 12 between digitized images of the same body at successive instants t and (t + 1) are provided.
- the comparison means 12 are formed by the central processing unit 13 of the computer and appropriate software stored in an area of the internal random access memory 11 a .
- the time interval Dt between two instants t and (t + 1) taken into account is sufficient so that in the event of a movement normal of a swimmer, the differences between the two successive images reflect such a movement; the time interval Dt is however as small as possible so that an alert is triggered without delay in the event of a suspicious situation.
- This interval Dt can be of the order of a few tenths of a second.
- the comparison means calculate, between two instants t and (t + 1), the differences between two successive image matrices from the same camera.
- the means of comparison thus make it possible to obtain the zones of change between two images at successive instants, i.e. the areas of movement between the two instants considered.
- the central processing unit 13 combined with software appropriate, also constitutes a means of estimating the nature of a body, the image of which is obtained (human body or not), of the trajectory and attitude changes of this body.
- Central unity 13 and the software are, moreover, intended to constitute means of decision to trigger an alarm in the event of a trajectory or suspicious body movement observed.
- the judicious placement of the detection means D1, D2, D3 relative to the bottom of the pool ensures proper operation, the entire pool being covered by these detection means.
- a shape followed F1 .... Fn should be able to disappear ideally only by "the top “that is to say when leaving the lower area of the pool in going up, or out of the pool.
- the alert is triggered by the computer 9.
- the latter advantageously comprises a remote control card 14 suitable for actuating various warning means audible or visual.
- the computer can set off a vibrator or snorer 15, in particular worn on the belt of a charged lifeguard monitoring the pool.
- the swimming pool area where product the event that triggered the alert can be reported on a liquid crystal screen, also worn by the lifeguard, under form of an alphanumeric code, so that the lifeguard can intervene quickly in the right place.
- the computer 9 in the event alert, cut the pool drain valves 16 to remove any suction effect on the exhaust grilles located at the bottom of the pool.
- We can also send automatically fax to an emergency medical service.
- the software used can order, by the microcomputer 9, storing images on hard drive 11b scanned of the incident.
- the images of the area where a suspicious movement, including immobilization at the bottom of the pool of a body are displayed on at least one control screen E at the available to supervisors.
- the removal of the doubt on a detected form could be performed with other means than a sonar, for example with a laser.
- the invention monitoring system improves security swimming pools.
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Description
- des moyens de détection propres à donner, sous forme de signaux électriques, des images des corps immergés dans l'eau de la piscine, ces moyens de détection étant prévus sur les parois de la piscine en des endroits judicieusement répartis pour balayer au moins une fraction du volume d'eau de la piscine ;
- des moyens de numérisation des signaux électriques obtenus ;
- des moyens de compression des données numériques obtenues par les moyens de numérisation précités ;
- des moyens de stockage temporaire et permanent des données numériques d'images à des instants successifs ;
- des moyens de comparaison entre les images numérisées d'un même corps à des instants successifs ;
- des moyens d'estimation de la nature d'un corps (corps humain ou non), de la trajectoire et des changements d'attitude du corps d'après ces images successives ;
- et des moyens de décision propres à déclencher des moyens d'alarme en cas de trajectoire ou mouvement suspect du corps observé.
- la figure 1 est une vue schématique, en perspective, d'une piscine équipée des moyens de détection du système de surveillance selon l'invention ;
- la figure 2 est une vue en plan schématique de la piscine illustrant les champs de vision des moyens de détection qui balayent tout le volume d'eau de la piscine ;
- la figure 3 est une vue en élévation d'un globe immergé contenant un moyen de détection du système de surveillance selon l'invention ;
- la figure 4 est une vue en coupe selon la ligne IV-IV de la figure 3 ;
- la figure 5 est une vue agrandie du détail A de la figure 4 ;
- la figure 6 est une vue en coupe selon la ligne VI-VI de la figure 4 ;
- la figure 7 est une vue agrandie du détail B de la figure 6 ;
- la figure 8 est une vue en perspective du globe de la figure 3 ;
- la figure 9 est un schéma synoptique simplifié du système de surveillance.
Claims (18)
- Système de surveillance d'une piscine pour la prévention des noyades, caractérisé par le fait qu'il comprend :des moyens de détection (D1, D2, D3) propres à donner, sous forme de signaux électriques, des images des corps immergés dans l'eau de la piscine, ces moyens de détection étant prévus sur les parois de la piscine en des endroits judicieusement répartis pour balayer au moins une fraction du volume d'eau de la piscine ;des moyens de numérisation (10) des signaux électriques obtenus ;des moyens de stockage temporaire et permanent (11a, 11b) des données numériques d'images à instants successifs ;des moyens de comparaison (12, 13) entre des images numérisées d'un même corps à des instants successifs ;des moyens d'estimation (12, 13) de la nature d'un corps (corps humain ou non), de la trajectoire et des changements d'attitude du corps d'après ces images successives ; etdes moyens de décision (12, 13) propres à déclencher des moyens d'alarme (15) en cas de trajectoire ou mouvement suspect du corps observé.
- Système selon la revendication 1, caractérisé par le fait que chaque moyen de détection (D1, D2, D3) comprend au moins une caméra vidéo (1,2), disposée dans un compartiment étanche (21).
- Système selon la revendication 2, caractérisé par le fait que le compartiment étanche (21) est destiné à être immergé et comporte deux caméras vidéo dont les champs d'observation coniques ont un angle d'ouverture d'environ 90° et dont les axes sont sensiblement orthogonaux dans un plan sensiblement horizontal.
- Système selon l'une des revendications 1 à 3, caractérisé par le fait qu'il comprend des moyens de compression (10) des données numériques obtenues par les moyens de numérisation, et que les moyens de numérisation des images obtenues et de compression des données numériques sont constitués par une carte (10) de numérisation et de compression d'images vidéo placée dans un micro-ordinateur (9) en configuration "multimédia".
- Système selon l'une des revendications 1 à 4, caractérisé par le fait que les moyens de détection (D1, D2, D3) alimentent les moyens de numérisation (10) par l'intermédiaire de moyens de multiplexage (10a).
- Système selon l'une des revendications 1 à 5, caractérisé par le fait que les moyens de stockage (11a, 11b) des données numériques d'images à des instants successifs, les moyens de comparaison entre les images numérisées d'un même corps à des instants successifs, les moyens d'estimation de la trajectoire et des changements d'attitude d'un corps et les moyens de décision sont constitués par les composants d'un micro-ordinateur (9), notamment éléments de mémoire (11a, 11b) et unité centrale (12, 13) de ce micro-ordinateur, dans lequel un logiciel approprié a été chargé pour lui permettre d'exécuter les opérations indiquées.
- Système selon la revendication 6, caractérisé par le fait que les moyens de comparaison (12, 13) des images numérisées entre instants successifs sont propres à ne prendre en considération que des images, dont les dimensions correspondent au moins à celles d'un enfant, afin d'éliminer des alarmes intempestives pouvant être causées par des corps étrangers.
- Système selon l'une des revendications 6 ou 7, caractérisé par le fait que les moyens de comparaison (12, 13) sont agencés pour isoler une forme et suivre sa trajectoire à des instants successifs.
- Système selon l'une des revendications 6 à 8, caractérisé par le fait que les moyens d'estimation (12, 13) sont propres à déterminer, à partir des résultats des moyens de comparaison, le caractère lent d'un mouvement et/ou l'immobilité d'un corps humain dans la piscine.
- Système selon l'une des revendications 6 à 9, caractérisé par le fait que les moyens de décision (12, 13) sont propres à déclencher une alarme si le caractère lent du mouvement ou la quasi-immobilité du corps dans la piscine se prolonge au-delà d'un temps déterminé, en particulier au-delà de 15 secondes.
- Système selon l'une des revendications 6 à 10, caractérisé par le fait que les images qui ont servi aux analyses ayant conduit au déclenchement d'une alerte sont enregistrées sur le disque dur (11b) du micro-ordinateur (9) de manière à pouvoir être consultées à tout moment.
- Système selon l'une des revendications 1 à 11, caractérisé par le fait qu'au moins un écran de contrôle (E) est accessible au personnel assurant la surveillance de la piscine, écran sur lequel sont affichées les images d'une zone considérée comme suspecte.
- Système selon l'une des revendications 1 à 12, caractérisé par le fait que les moyens d'alarme comprennent un avertisseur (15) sonore et/ou visuel, en particulier avec indication de la zone de la piscine dans laquelle un événement suspect se produit.
- Système selon l'une des revendications 1 à 13, caractérisé par le fait qu'il comporte un dispositif d'arrêt immédiat (16) du pompage et de la filtration de l'eau de la piscine en cas d'accident détecté, ce dispositif d'arrêt pouvant être commandé soit manuellement, soit automatiquement par le micro-ordinateur (9, 14).
- Système selon l'une des revendications 1 à 14, caractérisé par le fait que les moyens de détection (D1, D2, D3) sont disposés chacun dans un compartiment étanche (21) dont une paroi est constituée d'un globe (3) comportant des zones (1a, 2a) à travers lesquelles sont acquises les informations propres à donner les images des corps immergés dans l'eau de la piscine et dont une autre paroi (23) est traversée de façon étanche par des câbles (8a) pour transporter vers l'extérieur de la piscine les informations fournies par les moyens de détection (D1, D2, D3).
- Système selon la revendication 15, caractérisé par le fait que la paroi (23), qui est traversée par les câbles (8a), est équipée d'un premier raccord étanche démontable (24) relié à la première extrémité d'une gaine étanche (8) dont l'autre extrémité est reliée à un second raccord étanche (20) fixé sur le fond (7a) d'un boítier (7), qui est destiné à traverser de façon étanche la paroi latérale (4) de la piscine.
- Système selon la revendication 16, caractérisé par le fait que l'intérieur du boítier (7) est destiné à être en communication avec l'eau de la piscine et que la gaine étanche (8) est lovée dans le boítier (7) de façon à avoir une longueur au moins égale à celle qui permet de sortir le compartiment (21) hors de l'eau de la piscine sans démontage du raccord étanche (20) fixé sur le fond (7a) du boítier (7).
- Piscine équipée du système selon l'une des revendications 1 à 17, caractérisée par le fait que les moyens de détection (D1, D2, D3) sont disposés de manière que leurs champs de vision se recouvrent en partie pour ne laisser aucune zone morte et balayer pratiquement tout le volume de la piscine.
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9513585 | 1995-11-16 | ||
FR9513585A FR2741369B3 (fr) | 1995-11-16 | 1995-11-16 | Systeme de surveillance sous-marine d'une piscine |
FR9610442A FR2741370B1 (fr) | 1995-11-16 | 1996-08-26 | Systeme de surveillance d'une piscine pour la prevention des noyades |
FR9610442 | 1996-08-26 | ||
PCT/FR1996/001789 WO1997018542A1 (fr) | 1995-11-16 | 1996-11-13 | Systeme de surveillance d'une piscine pour la prevention des noyades |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0861481A1 EP0861481A1 (fr) | 1998-09-02 |
EP0861481B1 true EP0861481B1 (fr) | 1999-08-18 |
Family
ID=26232329
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP96938302A Expired - Lifetime EP0861481B1 (fr) | 1995-11-16 | 1996-11-13 | Systeme de surveillance d'une piscine pour la prevention des noyades |
Country Status (10)
Country | Link |
---|---|
US (1) | US6133838A (fr) |
EP (1) | EP0861481B1 (fr) |
AT (1) | ATE183596T1 (fr) |
AU (1) | AU7577296A (fr) |
CA (1) | CA2235766C (fr) |
DE (1) | DE69603875T2 (fr) |
ES (1) | ES2137733T3 (fr) |
FR (1) | FR2741370B1 (fr) |
GR (1) | GR3031844T3 (fr) |
WO (1) | WO1997018542A1 (fr) |
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CN105575059A (zh) * | 2016-03-24 | 2016-05-11 | 刘冰彦 | 游泳池防溺水报警装置 |
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-
1996
- 1996-08-26 FR FR9610442A patent/FR2741370B1/fr not_active Expired - Lifetime
- 1996-11-13 WO PCT/FR1996/001789 patent/WO1997018542A1/fr active IP Right Grant
- 1996-11-13 CA CA002235766A patent/CA2235766C/fr not_active Expired - Fee Related
- 1996-11-13 ES ES96938302T patent/ES2137733T3/es not_active Expired - Lifetime
- 1996-11-13 EP EP96938302A patent/EP0861481B1/fr not_active Expired - Lifetime
- 1996-11-13 AT AT96938302T patent/ATE183596T1/de not_active IP Right Cessation
- 1996-11-13 DE DE69603875T patent/DE69603875T2/de not_active Expired - Lifetime
- 1996-11-13 US US09/068,514 patent/US6133838A/en not_active Expired - Lifetime
- 1996-11-13 AU AU75772/96A patent/AU7577296A/en not_active Abandoned
-
1999
- 1999-11-16 GR GR990402938T patent/GR3031844T3/el unknown
Also Published As
Publication number | Publication date |
---|---|
GR3031844T3 (en) | 2000-02-29 |
EP0861481A1 (fr) | 1998-09-02 |
FR2741370B1 (fr) | 1998-05-29 |
AU7577296A (en) | 1997-06-05 |
US6133838A (en) | 2000-10-17 |
CA2235766C (fr) | 2001-07-10 |
ES2137733T3 (es) | 1999-12-16 |
WO1997018542A1 (fr) | 1997-05-22 |
CA2235766A1 (fr) | 1997-05-22 |
FR2741370A1 (fr) | 1997-05-23 |
DE69603875T2 (de) | 2000-04-20 |
ATE183596T1 (de) | 1999-09-15 |
DE69603875D1 (de) | 1999-09-23 |
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