Title:
RECEIVER, FIRE DETECTION SYSTEM, AND FIRE DETECTION METHOD
Document Type and Number:
WIPO Patent Application WO/2020/026589
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide a fire detection system and a fire detection method that can deal with scenarios of a wider range and carry out accurate fire detection in a wide-range sensor that monitors fire situations by propagating optical signals. A receiver (10) according to the present disclosure is provided with: a detection unit (11) provided with a sensor that receives a first optical signal of a wavelength included in an absorption band of water molecules and a second optical signal of a wavelength included in an absorption band of carbon dioxide molecules; a signal processing unit (12) that calculates a water vapor concentration and a carbon dioxide concentration on the basis of changes in intensity of the first and second optical signals; and a determination unit (13) that determines whether there is a fire caused by alcohol combustion on the basis of the water vapor concentration and the carbon dioxide concentration.
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Inventors:
MATSUDA YUMA (JP)
TANAKA AKIHIRO (JP)
TANAKA AKIHIRO (JP)
Application Number:
PCT/JP2019/022457
Publication Date:
February 06, 2020
Filing Date:
June 06, 2019
Export Citation:
Assignee:
NEC CORP (JP)
International Classes:
G01N21/59; G08B17/10; G08B17/117
Foreign References:
| JP2000314700A | 2000-11-14 | |||
| JP2013096810A | 2013-05-20 | |||
| JP2013024728A | 2013-02-04 | |||
| JP2007040891A | 2007-02-15 | |||
| JP2007316765A | 2007-12-06 | |||
| JP2014229193A | 2014-12-08 | |||
| JP2003162778A | 2003-06-06 |
Attorney, Agent or Firm:
IEIRI Takeshi (JP)
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