| 摘要 |
PROBLEM TO BE SOLVED: To provide a fire monitoring method for preventing erroneous judgment even when a heat source strong enough for detection by an infrared sensor and an ultraviolet sensor is present in a monitor area. SOLUTION: This is a fire monitoring method for monitoring the outbreak of a fire by the intensity of ultraviolet rays and infrared rays generated in a monitor area 10 by using a first photosensor for detecting ultraviolet rays and a second photosensor for detecting infrared rays radiated from a flame. In this case, an ultraviolet sensor 40 is used for the first photosensor, and an infrared sensor 30 is used for the second photosensor, and image processing for an area excluding a non-detected part 20 in the monitor area 10 is operated to an image signal R from the infrared camera 30, and when both the luminance output V1 of the ultraviolet sensor 40 and the luminance output R3 of the infrared camera 30 excluding the non-detected part 20 reach a prescribed level or above, a fire generation output F is generated.
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