Abstract
PURPOSE. The article discusses issues of searching for people in a burning building and monitoring compliance with evacuation rules to a refuge area. In case of fires or other emergencies in buildings evacuating people from technical rooms is a great concern. Management information system (MIS) model for warning of emergency in building has been worked out to solve this problem. The article is aimed at substantiating radio channel system use for searching for people during fires and emergencies via wireless Wi-Fi network. METHODS. Mobile device transmits signal powers from nearby Wi-Fi routers to the building MIS server. Based on information about routers placement points and order, it is possible to locate a person if his phone transmits only residual signal power in a given location. Statistical model ITU-R 1238 is used to calculate power loss. All signal power level matrices at receiver input from routers at the person’s location are constructed, compared with signal power matrix at the device location, and mobile device exact location is determined. Dividing room into cubes makes it possible to determine a person’s position – standing or lying. FINDINGS. Mandatory requirement for searching for people in buildings system functioning is using a two-way radio channel (via wireless Wi-Fi network), which can significantly expand fire alarm system functionality in terms of constant serviceability monitoring. RESEARCH APPLICATION FIELD. It is advisable to include research results in research and development work of EMERCOM of Russia and other ministries and departments research organizations involved in developing fire safety systems for critical protection facilities. CONCLUSIONS. Developing radio channel system for searching for people in emergencies will make it possible not only to locate technical personnel with mobile devices, but to evacuate people if necessary.
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