Using geofencing for a disaster information system

摘要

This paper proposes a disaster information system using the geofencing technology to detect the movement of users and provide information of the risk for them. The system is composed of client-server architecture; the server collects risk information from various information sources and the client watches the user to notify the information as the need arises. To detect the user's movement, the client creates a virtual fence called geofence at the dangerous area based on the risk information stored in the server, and monitors the user's entry and exit of the fence. Thus the system can deliver warnings and advices timely to specific users in danger. We implemented a prototype system and evaluated the accuracy of the system. The location of the user was detected with high accuracy when entering the fence, but the accuracy was low when exiting the fence.