Inspection system and crime prevention system

摘要

There is a possibility of putting out error warning vis-a-vis the object which exists outside the territory where in the position inspection system watch the doubtful person et. al making use of the radar device which does the sending and receiving of microwave or ultra high frequency, and warning, the territory where it can inspect the radar device as for form of the territory where we would like to watch always it does not agree, would like to watch. Then, to surround the territory where we would like to watch with the plural reflectors, from the reception signal from the reflector and the reception signal from inspection object ones, calculating the respective coordinate value, it compares. When coordinate value of inspection object ones, it is located inside the territory where we would like to watch, judging that inspection object ones the doubtful person, et. al it puts out warning. When coordinate value of inspection object ones, it is located outside the territory where we would like to watch, as for any that inspection object things that it is not the doubtful person et. al, it judges, does not put out warning. In addition, if it makes the constitution which periodically does the proofreading job and self diagnostic job of the radar device among the above-mentioned reflectors at least making use of one, it becomes possible always to maintain the efficiency of the radar device optimumly.