Lanka Wijesinghe, Prasanga Siriwardena, Sinnathamby Shanmugarajah, Sameera Wijeratne, Randinee Wijesinghe, Michael de Soyza , Harsha Purasinghe, Dileeka Dias
The paper describes the design and development of an emergency warning network that can disseminate disaster early warnings in three languages, to vulnerable communities over the GSM network. The Disaster Early Warning Network (DEWN) is a last-mile solution for early warning of disasters, and consists of a server at a warning dissemination centre, the GSM network and user terminals.
The user terminals are mobile phones with the DEWN application and electronic alarm devices capable of generating audible, high-volume alarms and flashlights. The user devices generate alarms in response to a warning message from an authorized entity via GSM’s short message service (SMS) or cell broadcast (CB). The design of DEWN follows international guidelines on emergency communications, such as the ability to reach a large number of people very fast, awaken sleeping communities, and be able to acknowledge warning messages.