The invention discloses a method for reducing the
false alarm rate of biological induction perimeter alarm, and particularly relates to the technical field of
infrared induction. Acquiring background temperature data of a monitoring area, constructing a background thermal field
reference model and calculating a background reference temperature value; obtaining a current background temperature according to a preset time interval, and calculating a dynamic background
temperature difference drift rate; heat source change information is extracted through the thermal imaging
image sequence, the change variance of a heat source in a time window is calculated, and the static heat source
signal stability is obtained; performing normalization
processing on the two features, and constructing a
feature parameter set; inputting the set into a
fuzzy logic reasoning model, and outputting PIR sensor
signal credibility parameters according to a preset
fuzzy rule; according to a credibility result, an alarm determination path is dynamically selected, and intelligent fusion and determination of a PIR
signal and a video identification result are realized; according to the method, the PIR false triggering risk in the complex thermal environment can be effectively identified, the
false alarm rate is reduced, and the reliability and adaptability of a
perimeter security system are improved.