Title:
WIRELESS SIGNAL TRANSMISSION-BASED INDOOR FIRE DETECTION AND ALARM METHOD AND SYSTEM
Document Type and Number:
WIPO Patent Application WO/2018/161433
Kind Code:
A1
Abstract:
The present invention provides a wireless signal transmission-based indoor fire detection and alarm method and system; said wireless signal transmission-based indoor fire detection and alarm method comprises the following steps: step S1: a receiving terminal receiving an RF signal from a transmitting terminal, obtaining CSI data, then using a Butterworth low-pass filter to perform Gaussian white-noise removal processing on the data, and waiting until the current environment enters a stable state; step S2: performing statistical probability on the data of the current environment in a stable state, and calculating the angle of arrival, amplitude feature, and phase diversity of same; step 3: continuing to acquire CSI data of the current environment, and calculating to obtain the overall probability of a fire occurring. In the present invention, an existing Wi-Fi device is used to collect signals so as to accomplish the subsequent processing and analysis of the data; thus it is possible to make a valid determination of a current indoor environment without requiring additional devices and calibration, reducing overhead; the invention is easy to use and is widely applicable.
Inventors:
WU KAISHUN (CN)
HUANG YONGZHI (CN)
WANG LU (CN)
ZHONG SHUXIN (CN)
YANG HAILIANG (CN)
HUANG YONGZHI (CN)
WANG LU (CN)
ZHONG SHUXIN (CN)
YANG HAILIANG (CN)
Application Number:
PCT/CN2017/084237
Publication Date:
September 13, 2018
Filing Date:
May 12, 2017
Export Citation:
Assignee:
UNIV SHENZHEN (CN)
International Classes:
G08B17/00
Foreign References:
| CN105761407A | 2016-07-13 | |||
| CN105303743A | 2016-02-03 | |||
| CN105911520A | 2016-08-31 | |||
| EP3054628A1 | 2016-08-10 | |||
| US20070146127A1 | 2007-06-28 |
Other References:
WU, KAISHUN: "Wi-Metal: Detecting Metal by Using Wireless Networks", 2016 IEEE INTERNATIONAL CONFERENCE ON COMMUNICATIONS (ICC), 27 May 2016 (2016-05-27), pages 1 - 6, XP055539959
Attorney, Agent or Firm:
SZ KINDWALF INTELLECTUAL PROPERTY FIRM (CN)
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