一种及时恢复故障路由的无线传感器路由算法

无线传感器网络以其布网灵活,连接方便,功耗小,成本低,逐渐被应用于煤矿、消防、化工安全等民用领域.根据煤矿安全应用的特殊情况,提出一种无线传感器路由算法.该算法在定向扩散算法的基础上进行了改进,采用簇的方式,由簇首协调簇内节点的数据采集和整合,并且在每一煤层设置层首作为协调节点,通过层首之间建立的主干路由,有效地减少冗余数据的传播.该算法的特点就是能够及时恢复出现故障的路由.实验模拟结果也表明算法有效地减少了冗余数据和传输延时.

Efficient rebuilding failed route algorithm in wireless sensor network

Wireless sensor networks(WSN) are introduced in a wide variety of applications such as fire-detection,coal mining safety and chemical-safety,since they can support mobility and flexibility of nodes in a network.A new WSN algorithm based on the directed diffusion algorithm for the coal mine application is proposed.In our algorithm,a "cluster head"is set in a given area to manage the data collection and aggregation.And "layer head"is set in every mine-layer.With the layer-heads and cluster-heads,a main route is established to reduce the redundancy data.The striking feature of the algorithm is that it can renew the failed route in a short time.The simulation results verify that the algorithm is efficient in cutting the redundancy data and reducing transmission delay.