煤矿井下全覆盖移动传感器网络拓扑管理机制研究

Research on Topology Management Mechanism of Fully Covered Mobile Sensor Networks in Coal Mine

如何实现煤矿井下传感网在信息采集传输过程中的能耗均衡,一直以来是煤矿信息化领域的热点研究问题。考虑到煤矿井下环境复杂,构建的通信网络往往因为节点之间的通信距离过长,不确定时间内待检测目标的随意移动,导致数据包在传输过程中转发效率偏低,网络整体能耗较高的现象。在分析节点之间位置距离的空间的相关性基础上,提出低数据率传输信号强度辅助下的中继节点优选机制(RALDR),实现了相对稳定的网络拓扑结构的构建与全覆盖,进而减少数据包转发的次数,有效缓解汇聚节点在处理数据过程中产生的能耗,延长了网络整体的生命周期。

How to realize the energy balance of coal mine sensing network in the process of information collection and transmission has always been a hot issue in the field of coal mine informatization research.Due to the complicated underground coal mine environmentthe too long communication distance between nodes,and the random movement of the target to be detected in an uncertain time,low forwarding efficiency of data packets and high overall energy consumption of communication network would occur during the transmission.Based on the analysis of the spatial correlation of the distance between nodes,this paper proposes a relay node optimization mechanism with the assisted low data rate signal strength(RALDR),which realizes the construction and full coverage of a relatively stable network topology,Simulation experiments show that the strategy is effective to reduce the number of times of packet forwarding,effectively alleviating the energy consumption generated by the aggregation node in processing data and prolonging the overall life cycle of the network.