WIRELESS BARRIER-EDGE MONITOR DEVICE AND METHOD

摘要

A remote unit (14) couples to an obstacle detection sensor (13) to both dete ct an obstacle in the path of a movable barrier (11) and operability of the obstacle detection sensor (13) itself. Information regarding these and, optionally, other parameters (such as battery status) is coded and transmitt ed as a short burst wireless transmission to an interface unit (15). The interface unit (15) decodes the message and provides controlling information to a movable barrier operator (12) as appropriate when an obstacle is presen t, when the sensor (13) is faulty, or when other monitored parameters are out o f normal bounds. In addition, the interface unit (15) can provide local alarms (auditory and visual) when detecting one or more of the above conditions.