一种有线传感器网络节点测距方法

摘要

针对有线传感器网络节点间需要定位问题,提出了一种有线传感器网络节点测距的方法,其中有线传感器网络中测距主机和若干个传感器节点顺序分布于二线制总线上,测距主机具有脉冲反射和接收电路,被测距节点具有短路电子开关,能按照预定命令控制电子开关闭合,主动使自身连接点处的传输线失配.利用传输线时域脉冲反射原理,进行了相关测距实验测定各个传感器节点到测距主机间的距离.实验结果表明:该方法可测定有线传感器网络主机到传感器节点间的距离并判定它们的连接顺序,效果良好.%Aiming at the localization problem of the wired sensor nodes, an approach is proposed to measure the distance between the wired sensor nodes. A host node with ranging function and several sensor nodes are distributed in a communication bus by sequence. The host node has pulse reflection and receiving circuits. Following the preset command, the sensor nodes short its electronic switch on the communication bus. Using the time-domain pulse reflection theory, ranging experiments are implied to detect the distance between the host node and sensor nodes in the bus. The experiment results show that this method can detect the sequence of the host node and sensor nodes in the bus and the distance between them.