IEEE Transactions on Software Engineering
Wearable interfaces for orientation and wayfinding
Assets '00 Proceedings of the fourth international ACM conference on Assistive technologies
System and Network Management Itineraries for Mobile Agents
MATA '02 Proceedings of the 4th International Workshop on Mobile Agents for Telecommunication Applications
An Analytical Comparison of the Client-Server, Remote Evaluation and Mobile Agents Paradigms
ASAMA '99 Proceedings of the First International Symposium on Agent Systems and Applications Third International Symposium on Mobile Agents
The People Sensor: A Mobility Aid for the Visually Impaired
ISWC '98 Proceedings of the 2nd IEEE International Symposium on Wearable Computers
Drishti: An Integrated Indoor/Outdoor Blind Navigation System and Service
PERCOM '04 Proceedings of the Second IEEE International Conference on Pervasive Computing and Communications (PerCom'04)
Hazard monitoring for visually impaired people enabled by wireless sensor networking technology
Proceedings of the 1st international conference on PErvasive Technologies Related to Assistive Environments
On Computing Mobile Agent Routes for Data Fusion in Distributed Sensor Networks
IEEE Transactions on Knowledge and Data Engineering
Agent Technologies for Sensor Networks
IEEE Intelligent Systems
Mobile software agents: an overview
IEEE Communications Magazine
IEEE Communications Magazine
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Wireless sensor networks (WSNs) have been identified as a promising technology for supporting assistive environments. This article introduces PROTECT, a system that employs autonomous software objects referred to as mobile agents (MAs) able of locating and informing visually impaired persons for potential risks. PROTECT utilizes a 3-tier architecture where the first tier comprises a base station (BS), the second tier mobile sinks (MS) (carried by blind people on their sticks) and the third tier stationary sensor nodes. This WSN is deployed in an urban environment. In the event of an alarm issued by a sensor node, the BS launches a number of MAs supplied with a near-optimal itineraries that visit the nodes in the alarm's surrounding area and notifies, through Wi-Fi (IEEE 802.11), visually impaired people for potential hazards in their proximity. In the event of communication problems (e.g. failure of some sensor nodes) PROTECT modifies the itineraries of the MAs to bypass the problematic areas avoiding disruption of the data collection process from working sensors. Simulation results confirm the high effectiveness of our proposed scheme in WSNs used in assistive environments and its performance gain over alternative MA-based approaches proposed for data fusion tasks.