Patent ID: 6822566
Filing Date: 2004-11-23
Classification: G08B

Abstract:
A perimeter monitoring system comprising:a. a first and a second mounting apparatus each comprising a tube comprising an axial interior slot and a pivot; b. a reflector assembly positioned to receive a beam of light along a segment of a perimeter of an area to be monitored and to provide a returned beam, the reflector assembly comprising a reflector secured to the pivot of the first mounting apparatus; and c. a monitor comprising: (1) an enclosure; and (2) a circuit board comprising an emitter that provides the beam of light and a detector that provides a signal when an interruption of the returned beam is detected, wherein: (a) the circuit board is mounted in the slot of the second mounting apparatus; and (b) the pivot of the second mounting apparatus is secured to the enclosure; and (3) an alarm controller that activates an alarm in response to the signal.