Wireless sensor networks for habitat monitoring
WSNA '02 Proceedings of the 1st ACM international workshop on Wireless sensor networks and applications
Wireless sensor networks: a survey
Computer Networks: The International Journal of Computer and Telecommunications Networking
TinyDB: an acquisitional query processing system for sensor networks
ACM Transactions on Database Systems (TODS) - Special Issue: SIGMOD/PODS 2003
TIBFIT: Trust Index Based Fault Tolerance for Arbitrary Data Faults in Sensor Networks
DSN '05 Proceedings of the 2005 International Conference on Dependable Systems and Networks
Distributed collaboration for event detection in wireless sensor networks
MPAC '05 Proceedings of the 3rd international workshop on Middleware for pervasive and ad-hoc computing
On Distributed Fault-Tolerant Detection in Wireless Sensor Networks
IEEE Transactions on Computers
Effect of Redundancy on Mean Time to Failure of Wireless Sensor Networks
AINA '06 Proceedings of the 20th International Conference on Advanced Information Networking and Applications - Volume 02
CollECT: Collaborative Event deteCtion and Tracking in Wireless Heterogeneous Sensor Networks
ISCC '06 Proceedings of the 11th IEEE Symposium on Computers and Communications
How public key cryptography influences wireless sensor node lifetime
Proceedings of the fourth ACM workshop on Security of ad hoc and sensor networks
Protothreads: simplifying event-driven programming of memory-constrained embedded systems
Proceedings of the 4th international conference on Embedded networked sensor systems
Composite Event Detection in Heterogeneous Sensor Networks
SAINT '08 Proceedings of the 2008 International Symposium on Applications and the Internet
Distributed fault-tolerant classification in wireless sensor networks
IEEE Journal on Selected Areas in Communications
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Wireless Sensor Networks are the key-enabler for low cost ubiquitous applications in the area of homeland security, health-care, and environmental monitoring. A necessary prerequisite is reliable and efficient event detection in spite of sudden failures and environmental changes. Due to the fact that the sensors need to be low cost, they have only scarce resources leading to a certain level of failures of sensor nodes or sensing devices attached to the nodes. Available fault tolerant solutions are mainly customized approaches that revealed several shortcomings, particularly in adaptability and energy efficiency. The authors present a complete event detection concept including all necessary steps from formal event definition to autonomous device configuration. It features an event definition language that allows defining complex events as well as enhance the reliability by tailor-made voting schemes and application constraints. Based on that, this paper introduces a novel approach for self-adapting on-node and in-network processing, called Event Decision Tree EDT. EDT autonomously adapts to available resources and environmental conditions, even though it requires to re-organize collaboration between neighboring nodes for evaluation. The authors' approach achieves fine-grained event-related fault tolerance with configurable adaptation rate while enhancing maintainability and energy efficiency.