中文摘要：

目的研究高速公路气象监测无线传感器网络双向数据传输、多点数据接收的路有协议。方法针对高速公路气象监测无线传感器网络线形部署的特点,分析数据传输的要求和类型,研究现有WSN路由协议的特点,尤其是定向扩散路由协议,通过对现有路由协议的改进,提出满足双向传输的WSN路由协议。结果提出了基于定向扩散路由协议（DD）的双向无线传感器网络路由协议（BDD）,实现了高速公路气象监测数据的多点传输。结论经仿真测试,该路由协议具有实现简单、工作可靠稳定,能满足高速公路气象监测数据双向传输的要求。

英文摘要：

Aim To put forward a new routing algorithm for freeway weather monitor wireless sensor network which can satisfy the demands of multi destination nod and bidirectional information transfer of freeway weather monitor wireless sensor network.Methods Through analysis of the features of freeway weather monitor WSN and studying the contemporary routing algorithm,especially directed diffusion protocol,to propose a bidirectional routing protocol to satisfy the need of freeway weather monitor WSN.Results A bi-directed diffusion routing algorithm was proposed based on directed diffusion,which can transfer data in bi-direction.Conclusion The simulation proved that this bi-directional routing protocol is easy to implementation and stable in working,satisfying the demand of bidirectional information transfer of freeway weather monitor wireless sensor network.