MOTION DETECTION SYSTEM AND METHOD WITH NULL POINTS

摘要

A motion detection system and method with null points with a motion detection method including transmitting a signal (102); detecting the signal at a first device (104); determining whether signal strength of the detected signal is less than an expected signal strength (106); transmitting at least one additional signal (108); detecting the at least one additional signal at the first device (110); determining whether signal strength of the detected at least one additional signal is less than the expected signal strength (112); and determining that the first device is in a null point when the signal strength of the detected signals is less than the expected signal strength for a predetermined number of the detected signals (114).