无线传感器网络协作事件检测研究

Event Detection with Collaboration Models in Wireless Sensor Networks

事件检测是无线传感器网络的重要应用之一。由于传感器节点廉价、易损,无线通信链路不稳定、易受干扰等特点,检测精度受到很大的限制。所以,利用传感器节点密集分布独立感知的特性进行协作事件检测很有必要。本文针对应用场景相关和网络维护相关两类事件的协作检测机制现状进行研究,并对各类协作模式下不同检测算法的优缺点进行了比较。

Event detection is one of the important applications of wireless sensor networks. However detection accuracy is limited by the amount of noise associated with the measurement and the reliability of usually low-end, inexpensive sensor nodes. It is necessary to take use of the characteristics of the WSN whose nodes are usually densely distributed and can percept the environment independently to eollaboratively detect events. This paper summarizes the studies on the detection of the application-related and network-maintenance-related events and finally shows the merits and demerits of different kinds of detection algorithms with different collaboration models.