ABNORMALITY DETECTOR

WIPO Patent Application WO/2018/198504

A1

Detection elements of an array sensor 12B detect infrared light in a band near 4.5 µm and convert the same to a DC-component electrical signal. Detection elements of an array sensor 14B detect infrared light in a band near 4.5 µm and convert the same to a DC-component electrical signal. Detection elements of an array sensor 16B detect infrared light in a band near 4.5 µm and convert the same to a DC-component electrical signal. A second computation processing unit 30 calculates a moving average value of the electrical signals detected by the detection elements of the array sensor 12B, a moving average value of the electrical signals detected by the detection elements of the array sensor 14B, and a moving average value of the electrical signals detected by the detection elements of the array sensor 16B, and determines whether or not a flame or abnormal temperature has been detected by the detection elements, said determination being performed on the basis of a first change amount, a second change amount, and a third change amount from the moving average values. A flame or abnormal temperature can thereby be detected with good precision at each position.

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ISHIKAWA RYO (JP)
TAKASHIMA TAKESHI (JP)
KIDO KENJI (JP)
HIRASAWA MASANORI (JP)
HANAI YUICHIRO (JP)

PCT/JP2018/006298

November 01, 2018

February 21, 2018

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FUKADA KOGYO CO LTD (JP)

G08B17/12; G01J1/02; G01J1/42; G01J5/48

JPH08190680A	1996-07-23
JP2010175562A	2010-08-12
JP2017076304A	2017-04-20
JP2002042263A	2002-02-08

TAIYO, NAKAJIMA & KATO (JP)

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