机械振动WSN大量数据自适应传输控制方法  

An adaptive transmission control method of large-scale data of mechanical vibration WSN

作　　者：舒帅 汤宝平[1] 黄艺 赵春华 付豪 SHU Shuai;TANG Baoping;HUANG Yi;ZHAO Chunhua;FU Hao(State Key Laboratory of Mechanical Transmission,Chongqing University,Chongqing 400044,China)

机构地区：[1]重庆大学机械传动国家重点实验室,重庆400044

出　　处：《振动与冲击》2023年第4期263-269,共7页Journal of Vibration and Shock

基　　金：国家自然科学基金(51675067)。

摘　　要：针对机械振动无线传感器网络(wireless sensor network, WSN)在传输大量数据时,每个数据包均采用确认方式传输导致高传输能耗的问题,提出了一种大量数据自适应传输控制方法。首先,通过数据分组检测机制减少传输确认帧带来的额外能耗,并通过试验确定最佳分组数量,避免浪费WSN节点有限的存储资源;其次,利用帧控制域特定标志位实现丢包状态通知,在不引入额外数据帧的情况下告知发送节点丢包状态,避免反馈信息包下发冲突,并优化反馈信息包的退避指数,降低丢包节点因反馈信息包下发延迟导致的侦听能耗;最后,通过最小二乘法拟合丢包率与链路质量指示的关系,节点根据当前传输链路质量自适应选择最佳传输模式。试验结果表明,所提传输方法可有效降低数据传输能耗并提升传输速率。Aiming at the problem of high transmission energy consumption when each data packet is transmitted in the acknowledgement mode when the mechanical vibration wireless sensor network(WSN) transmits a large amount of data, an adaptive transmission control method of large-scale data was proposed. First, the grouped data packet detection mechanism was used to reduce the additional energy consumption caused by the transmission of acknowledgement frames, and optimal number of packets was determined through experiments to avoid wasting the limited storage resources of WSN nodes. Secondly, the specific flag bit of the frame control domain was used to inform the sending node of the packet loss status without additional data frames, which avoid feedback information packet delivery conflicts, then the feedback information packet back-off index was optimized to reduce the listening energy consumption caused by the delay of feedback information packet delivery. Finally, the relationship between packet loss rate and link quality indicator was fit by a least square method for node’s adaptively selection of the best transmission mode. Experimental results show that the proposed method can effectively reduce the energy consumption of data transmission and increase the transmission rate.

关 键 词：机械振动监测 确认/否定确认(ACK/NACK) 传输能耗 无线传感器网络(WSN) 最小二乘法 

分 类 号：TP274.2[自动化与计算机技术—检测技术与自动化装置] TP393.1[自动化与计算机技术—控制科学与工程]