METHOD OF SENSING AEROSOL CHARACTERISTIC PARAMETER USING DUAL-WAVELENGTH SCATTERED SIGNAL AND APPLICATION THEREOF

Title:

METHOD OF SENSING AEROSOL CHARACTERISTIC PARAMETER USING DUAL-WAVELENGTH SCATTERED SIGNAL AND APPLICATION THEREOF

Document Type and Number:

WIPO Patent Application WO/2016/206000

Kind Code:

A1

Abstract:

A method of sensing an aerosol characteristic parameter using a dual-wavelength scattered signal and an application thereof, relating to the technical field of fire alarms. The method comprises: by receiving a light scattering optical power of two types of wavelengths, calculating a surface area concentration and volume concentration of an aerosol to obtain a Sauter mean diameter of the aerosol, comparing the same with a corresponding threshold, and emitting a corresponding fire alarm signal. By adopting the method, a particle diameter size of an aerosol can be determined by a Sauter mean diameter, enabling timely identification of whether a fire has started, and timely and accurate emission of a fire alarm signal or identification of interference by non-fire factors; further, a characteristic parameter of a detected aerosol can be determined from the surface area concentration and volume concentration thereof, thereby determining and emitting a fire type alarm signal, facilitating appropriate targeted action.

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Inventors:

WANG SHU (CN)
DENG TIAN (CN)
DOU ZHENG (CN)

Application Number:

PCT/CN2015/082083

Publication Date:

December 29, 2016

Filing Date:

June 23, 2015

Export Citation:

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Assignee:

UNIV HUAZHONG SCIENCE TECH (CN)

International Classes:

G08B17/107; G01N21/53

Domestic Patent References:

WO2008017698A1

2008-02-14

Foreign References:

CN104392577A	2015-03-04
CN2516967Y	2002-10-16
CN102171733A	2011-08-31
US20020113136A1	2002-08-22

Other References: