Wireless underground sensor network is mainly used in real-time detection of geological information.It is divided into underground sensor nodes and above-ground receiver nodes,which can transmit detection data to the network system in real time.However,its life cycle is constrained by battery energy.In order to extend the working time of nodes and increase the service life of wireless underground sensor networks,the optimal working frequency selection method of wireless underground sensor networks with communication constraints is studied.According to the working mode of wireless underground sensor network,the node function ener-gy distribution module is divided,and the energy consumption parameters affecting the module are given.Discrete vectors were used to construct reference matrix,and relative positions were obtained based on the operation of network nodes.Based on the communica-tion constraint conditions,the node distribution interval is quantified,and the linear mathematical model of node operation is estab-lished to predict the operating load of wireless underground sensor network.The energy signal is converted by beamforming technolo-gy,the upstream and downstream energy transmission protocols are judged,and the optimal working frequency of wireless under-ground sensor network nodes is selected.The experimental results show that the proposed method can quickly select the working fre-quency of the exit node and ensure the set data throughput under different noise conditions,which has application value.
关键词
通信约束/无线地下传感器网络/最佳工作频率/选择方法/实时探测
Key words
communication constraint/wireless underground sensor network/optimal operating frequency/selection method/re-al-time detection
维普
万方数据