Abstract: Aiming at the problem of node leak for mobile object monitoring. This paper proposes a node control strategy for mobile object monitoring in Wireless Sensor Networks. In the strategy, monitoring node imposes the position messages of the neighbor hop node to calculate the velocity-estimated function and orientation-estimated function. The nodes within scope of the orientation-estimated function to calculate the arrival estimated time of the mobile objects by the velocity-estimated function, and increase the duty cycle after this time for a period to improve the probability of sensing. The simulation results show that this strategy improves the probability of sensing of nodes, decreases the monitoring distortion degree of Wireless Sensor Networks.

Key words: Wireless Sensor Networks(WSN), mobile object monitoring, duty cycle control, velocity-estimated function, orientation-estimated function

摘要： 针对对运动物体监测时可能存在节点漏检的问题，提出一种运动物体监测的节点控制策略。监测节点利用邻跳节点的位置信息计算运动物体的速度估计函数和方位角估计函数，在方位角估计函数范围内的节点根据速度估计函数计算运动物体到达的估计时间，并在此后的一段时间内增加节点占空比以提高感知概率。仿真结果表明，该策略有效提高节点的感知概率，减小无线传感器网络的监测失真度。

关键词: 无线传感器网络, 移动物体监测, 占空比控制, 速度估计函数, 方位角估计函数

CLC Number: 

• TP393