Patent ID: 6498564
Filing Date: 2002-12-24
Classification: G08B

Abstract:
A tracking and monitoring system comprisinga heat source tracker producing a data signal representative of a current position of said heat source in a field of view and three-dimensionally changing the attitude thereof in such a manner as to catch an image of said heat source at a predetermined position in said field of view for tracking said heat source in a monitoring zone, a plurality of infrared detecting elements included in said heat source tracker and located in four quadrants defined in said field of view by two virtual axes perpendicular to each other to receive infrared light radiated from said heat source and to produce detecting signals each representative of the amount of infrared light incident on associated one of said plural infrared detecting elements, a data processing system connected to said heat source tracker, checking said data signal to see whether or not said heat source enters a prohibited zone defined in said monitoring zone and producing an instruction for an alarm when said heat source enters said prohibited zone, wherein said data processing system automatically determines said prohibited zone in accordance with data representative of a position of an access way through which said heat source enters said monitoring zone, and an alarm unit connected to said data processing system and responsive to said instruction for giving said alarm.