摘要
针对无线传感器网络(WSN)在实现机械振动同步采集过程中,采集节点应该同时触发采集命令,同步触发误差应在一个采样周期内的要求,设计了一种基于信标时序补偿思想的WSN同步触发协议STBTC_P(the Synchronization Trigger protocol based on Beacon Timing Compensation)。协议基于IEEE 802.15.4协议标准开发多跳树状网络,以信标负载方式传输采集命令,在利用集中关联信标分配法避免信标冲突并实现全网时钟同步后,采用基于信标时序补偿思想的同步触发方法实现机械振动采集命令的多跳同步触发,为最终提高机械振动同步采集精度创造使能条件。最后,在自研采集节点WSN-G2上运行STBTC_P协议,并验证了其有效性。
Aiming at the requirement that the sample commands of all the nodes should be triggered synchronously and the synchronization error should be less than one sampling period in the process of mechanical vibration synchronous acquisition using a wireless sensor net （WSN ）, a WSN synchronization trigger protocol based on beacon timing compensation was designed.The protocol was developed based on IEEE 802.15.4 Standard,the acquisition commands were transmitted with beacon.A good foundation for synchronization acquisition by effectively avoiding beacon conflicts with the centralized associated beacons allocation method firstly and then achieving trigger synchronization with the beacon timing compensation method for a multi-hop network was established.Finally,the proposed protocalran on the self-designed acquisition node WSN-G2 and its effectiveness was verified.
出处
《振动与冲击》
EI
CSCD
北大核心
2014年第3期57-62,共6页
Journal of Vibration and Shock
基金
国家自然科学基金资助项目(51375514)
高等学校博士学科点专项科研基金资助(20130191130001)
机械传动国家重点实验室科研业务费(SKLMT-ZZKT-2012 MS 09)资助
