Minesweeper for Sensor Networks--Making Event Detection in Sensor Networks Dependable

Event detection using wireless sensor networks (WSNs) has become a new field of research in the past years, increasing the need for dependability and fault tolerance. Our work exploits the massive redundancy of large WSNs in combination with neighbours´ relations to identify faulty nodes. We present a new approach to categorize nodes in being faulty or fault free based on the event detection results of the nodes´ neighbours and the nodes adjacent to the neighbours. For error probabilities < 0.2 our algorithm performs closely to other work in the field, and performs considerably better for error probabilities up to 0.5.