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  • Документ
    Employees notification systems in the event of emergency situations through public wireless access points
    (2020) Patlaichuk, O.; Serbulov, H.
    In the event of an emergency, there are still actions that people must take to save themselves. Currently everyone has a mobile phone. Almost all establishments have an open Wi-Fi network. Therefore, the purpose of the work is to design and develop a system that, when connected to the network, informed about the threats that have arisen and the actions that citizens must take to avoid damage. The alert system works around the clock. It complements the existing fire alarm and security systems. In the work a critical analysis of existing and prospective emergency alert systems was carried out, which showed that there is currently a revision of the requirements for the civil protection notification system towards the transition to new structures of such systems organization, taking into account the current state of technical means of communication, protection against unauthorized access and the spread of malware, identified the possibility of improving them. The mathematical model of choosing the optimal coverage of the territory with the signal WI-FI alert has been improved, which takes into account losses during repeated passage of the signal through obstacles, which allows to predict the frequency reuse on different floors of the building. The study was made on 19 pages of printed text, contains 3 drawings and a list of references, which consist of 22 sources. The study was done in English.