电力线物联网系统数据链路层协议

为了提高由电力传输线构建的物联网传输数据的效率,设计出一种适用于电力线物联网的数据链路层通信协议。该协议包含新型帧结构及一套符合CENELEC EN560065-1等规范的数据传输时序,除去了现有电力线通信协议帧结构中网络层路由计数器、传输层协议控制信息等复杂的部分,使基于电力传输线物联网的各节点在数据采集过程中避免节点发生碰撞,在多重噪声干扰的环境中得以可靠通信。运用C语言编程实现该协议内容,并通过搭建实物电路进行1万次实验验证,结果表明,该协议可保证同变压器下的可靠通信,将电力线物联网系统中数据传输的正确率从协议使用前提高了1%。

Data link layer protocol of internet of things based on power line

In order to ensure the internet of things based on power transmission line transmitting data effectively,a data link layer protocol of internet of things based on power line is designed. The protocol has a new frame structure and a set of reasonable data transmission time sequence （Reference to CENELEC EN560065-1 and other norms）.This design excludes complex parts of data link layer frame structure of existing power line communication protocols such as routing counter of network layer,control information of transport layer and so on.Therefore collisions between communication nodes in the internet of things based on power transmission line in data acquisition process can be avoided effectively and a reliable communication in the environment with multiple noise interference is ensured.The protocol is achieved by C programming language and verified by building a real physical circuit with ten thousand experiments.Experimental results show that this protocol can ensure a more reliable communication under the same transformer,and can improve the accuracy of data transfer in the internet of things based on power line by one percent.