Abstract: A swimming pool monitoring system including an imaging sensor for detecting the presence of an object within a defined perimeter of the swimming pool and a computer system operatively coupled to the imaging sensor with a non-transitory computer readable medium storing a program causing the computer system to execute processing to determine when an object is moving within a field of view of the imaging sensor once detected by the imaging sensor, to determine an angle of the object relative to the imaging sensor and to determine a range of the object relative to the imaging device to include a determination of a size of object for providing an alarm when the object approaches within a predetermined distance of the pool edge.

Abstract: A swimming pool monitoring system using a plurality of sensor systems to detect the presence of objects within a defined perimeter of the swimming pool prior to the objects reaching the edge of the pool. The objects may be people or animals. The sensor systems may include a ranging sensor, an audio sensor, an olfactory sensor and a video imaging sensor. The sensors are monitored by a computer system that has stored data for objects authorized to be within the pool perimeter. The system provides an alert or alarm upon detection of an unauthorized or unknown object in the monitored perimeter by comparing detected objects to the stored data. The system can determine the distance of the object from the pool edge and provide an adjustable alarm as the objects nears the pool edge.