SWIMMER LOCATION MONITOR

摘要

A system is disclosed for locating swimmers who could be in danger of drowning, as determined by preset parameters such as the time duration that they remain at a depth where breathing is impossible. In this system, each individual swimmer wears a Swimmer Location Monitor (SLM -- 11). This is a miniature electronic device that not only determines the extent of the swimmer's danger but also emits an electromagnetic alarm signal whenever such a danger exists. At each occurrence, an alarm, which may be audible and/or visual, is sounded on the surface while the swimmer's location is tracked in real-time from the signals received on an antenna network (16) deployed along the bottom of the swimming area. These signals are combined in a central processor (17) and the computed real-time location is displayed graphically on a monitor to guide the guard personnel in rescue operations. The invention is intended for use in pools, beaches, water parks and other swimming areas.