INFRARED-RAY HUMAN BODY DETECTOR

PROBLEM TO BE SOLVED: To detect a heat source having a temperature different from the background temperature of space, identify whether the heat source is a human being or not, and output the coordinates of the position of the heat source determined to be a human being, the size, average temperature, maximum temperature, and minimum temperature of a heating element, and the background temperature of the vicinity of the heat source.SOLUTION: The temperature distribution of space is measured using an infrared-ray detecting element arranged two-dimensionally. If a heating element having a temperature different from the temperature of its background is present in the space, the center of the gravity of the heating element is obtained, and the coordinates of the positions of the center of the gravity are stored. If the number of the coordinates of the center of the gravity stored in a set area around the coordinates of the center of the gravity of the heating elements detected successively exceeds a set value, information that the heating element is a human being, the coordinates of the position of the heating element, the size, its average temperature, maximum temperature, and minimum temperature, and the background temperature of the vicinity of a heat source are output.