Alarm and monitoring device for the presumption of bodies in danger in a swimming pool
First Claim
1. A swimming pool monitoring system, comprising at least one device for monitoring the absence of bodies in danger in a swimming pool, constituted of a means for observing critical zones, said observing means being connected to a computer processing the data obtained and able to distinguish the absence of submerged immobile bodies from other bodies and to signal danger when the duration of immobility of an observed body in a critical zone has exceeded a given threshold, said means for observing said critical zones operating at visible wavelengths and comprising emitters and receivers arranged in such a manner that each observed zone is situated in a volume adjacent to and parallel to the bottom of the swimming pool;
- wherein said system further comprises at least one stationary pattern constituted of or adapted to be applied to at least one portion of the swimming pool wall adjacent said critical zones, said system being arranged to monitor said absence of bodies in danger by the permanent detection of said pattern, and to signal danger by detection of the temporary but non-transient obstruction of said permanently detected pattern.
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Abstract
The invention relates to a device for monitoring the absence of motionless bodies in a swimming pool. Two cameras (1) provide for the permanent imaging of the bottom of the swimming pool. These images are first digitized and then processed by a computer. The superimposition of the two information permits analysis of substantially the entire the surface of the swimming pool in order to determine if a portion is masked by an obstacle. When such obstacle is detected, the duration of the presence of each masked pixel is analyzed. After a certain time delay, and for a minimum number of neighboring pixels, an alarm is generated.
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Citations
14 Claims
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1. A swimming pool monitoring system, comprising at least one device for monitoring the absence of bodies in danger in a swimming pool, constituted of a means for observing critical zones, said observing means being connected to a computer processing the data obtained and able to distinguish the absence of submerged immobile bodies from other bodies and to signal danger when the duration of immobility of an observed body in a critical zone has exceeded a given threshold, said means for observing said critical zones operating at visible wavelengths and comprising emitters and receivers arranged in such a manner that each observed zone is situated in a volume adjacent to and parallel to the bottom of the swimming pool;
- wherein said system further comprises at least one stationary pattern constituted of or adapted to be applied to at least one portion of the swimming pool wall adjacent said critical zones, said system being arranged to monitor said absence of bodies in danger by the permanent detection of said pattern, and to signal danger by detection of the temporary but non-transient obstruction of said permanently detected pattern.
- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
Specification