Sonar Based Drowning Detection System, Method And Kit

摘要

There is provided a system for detecting a drowning person within a water body, the system comprising (i) sonar sensors for forming a three dimensional grid of sonar waves within the water body, the grid having three dimensional grid cells; (ii) a movement path tracing unit adapted to be connected to the sonar sensors for tracing a movement path of a person within the water body by determining a sequence of successive grid cells crossed by the person within the grid in the course of said movement path, the determination of the successive grid cells being made based on detected propagation delays of the sonar waves forming the grid; and (iii) a drowning detection unit adapted to be connected to the movement path tracing unit for analysing the movement path of the person and issuing an alarm when the movement path of the person is indicative of a drowning person movement path. There is also provided a kit and method for detecting a drowning person within a water body.

主权项

1. A system for detecting a drowning person within a water body, the system comprising:
sonar sensors for forming a three dimensional grid of sonar waves within the water body, the grid having three dimensional grid cells; a movement path tracing unit adapted to be connected to the sonar sensors for tracing a movement path of a person within the water body by determining a sequence of successive grid cells crossed by the person within the grid in the course of said movement path, the determination of the successive grid cells being made based on detected propagation delays of the sonar waves forming the grid; a drowning detection unit adapted to be connected to the movement path tracing unit for analysing the movement path of the person and issuing an alarm when the movement path of the person is indicative of a drowning person movement path.