基于休眠/唤醒的无线传感器监控系统的节能技术研究

Research on energy saving technology of wireless sensor monitoring system based on dormancy/wake-up

无线传感器网络因其大规模、低价格、方便快捷地完成环境感知、信息采集、信息处理和传输的特点使其被广泛应用在远程监控系统的搭建当中,远程监控系统往往应用在建设偏远位置的工厂或基地,所以很难采用市电源为其供电,所以设计一种减少系统能源的机制就变得至关重要。休眠/唤醒节能技术是一种最常用的节能手段,然而一般的休眠/唤醒技术会降低系统的可靠性,为了弥补该算法的这一缺点文章提出了一种改进后的休眠/唤醒节能机制。该机制的工作原理是根据节点处于工作状态的邻居节点数量休眠来动态改变休眠率,再通过判断是否检测到重要信息而唤醒处于休眠状态的传感器节点以达到节能与可靠性的均衡。

The wireless sensor network which is widely used in the construction of the remote monitoring system, because of its large scale and low price, convenient and efficient completion of environmental perception, information collection, information processing and transmission, remote monitoring system is often used in the construction of the factory in a remote location or base, so it is difficult to use the power for the city the power supply, so the design of a system for reducing energy mechanism becomes critical. Sleep/wake-up energy saving technology is one of the most commonly used means of energy saving. However, the general sleep/wakeup technology will reduce the reliability of the system. In order to remedy the shortcoming of the algorithm, this paper proposes an improved sleep/wake-up energy saving mechanism. The working principle of the mechanism is to change the sleep rate dynamically according to the number of neighbor nodes in the working state of the node, and then wake up the sensor nodes in the dormant state by judging whether to detect important information, so as to achieve the balance between energy saving and reliability.