无线传感器网络中可容错的事件监测算法

摘要

Event monitoring is an important issue in wireless sensor networks, however, the limits of sensor networks and the uncertainty existed in sensed data propose challenges for it. This paper analyzes the uncertainty existed in sensor networks and presents fault-tolerant event monitoring mechanism. We first introduce the fault-tolerant event detection and monitoring nodes choosing algorithms, and then estimate the event appearing area under the condition of static sensor nodes and moving sensor nodes. Finally, we evaluate our algorithms via a serial of simulations. The experimental results show that the proposed algorithms can obtain optimal performance in event monitoring.%事件监测是传感器网络研究中的一个重要问题,传感器网络自身的局限性以及感知数据的非确定性向事件监测技术提出了挑战.文中分析了传感器网络中存在的各种非确定性,引入可容错的事件监测机制.文中首先提出可容错的事件发现和参与事件监测节点选择算法.在此基础上,提出可容错的事件发生区域估算算法.算法对于动态传感器网络具有较好监测效果.最后通过大量模拟实验验证了所提出算法的性能.