G - Physics – 08 – B
Patent
G - Physics
08
B
G08B 21/08 (2006.01)
Patent
CA 2561055
The invention relates to a device enabling an alarm to be triggered in the event of a fall into a swimming pool, and preventing false alarms caused by disturbing elements such as the wind. Said device consists of a probe (1) which is submerged in the liquid used to retransmit the aquatic waves varying in pressure in the compression chamber (8), a piezoelectric-type sensor (2) which is located inside said chamber and used to convert the pressure variations into electrical voltage, another identical sensor (3) located in the housing (7) and enabling the electronic card (4) to substract the two sets of information enabling the vibrations, in addition to the noise caused by the wind on the housing, to be eliminated, and an electronic card (4) which is used to control a siren for alerting the parents. The inventive device can optionally pilot a radio emitter (5) for controlling a deported siren.
L'invention concerne un dispositif permettant de déclencher une alarme en cas de chute dans une piscine sans risque de déclenchements intempestifs dus à des éléments perturbateurs tels que le vent. Il est constitué d'une sonde (1) plongeant dans le liquide servant à retransmettre les ondes aquatiques en variation de pression dans la chambre de compression (8), d'un capteur de type piézoélectrique (2) converti à la variation de pression en tension électrique qui est situé à l'intérieur de cette chambre, d'un autre capteur (3) totalement identique situé dans le boîtier (7) permettant à la carte électronique (4) de soustraire les deux informations permettant d'éliminer les vibrations ainsi que le bruit provoqué par le vent sur le boîtier, et la carte électronique (4) commandant une sirène servant à alerter les parents. Il peut éventuellement piloter un émetteur radio (5) pour commander une sirène déportée.
M.g. International
Perley-Robertson Hill & Mcdougall Llp
LandOfFree
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