Swimming pool body drop detector especially for detecting children falling into the pool

摘要

The detector includes an immersed module (10) which is placed close to the water surface and transforms water waves into electrical signals. These signals are transmitted to a second module (12) positioned out of the water. The module includes a differential sensor (14) connected to an alarm (16) via a switch. The differential sensor has an adjustable sensitivity threshold which can automatically change function of weather conditions.