基于NB-IoT技术的近海水声层析浮标设计与实现

Song Yang, Sartaj Khan, Xing Chuanxi, Zhang Yifeng, Piao Shengchun
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引用次数: 2

摘要

介绍了一种基于窄带物联网(NB-IoT)技术的沿海海洋声层析成像浮标的设计与实现。浮标的主体由未塑化的聚氯乙烯(PVCU)管道材料制成。浮筒主要由水面航标和浮筒体两部分组成。水面航标部分进一步由NB-IoT和全球定位系统(GPS)模块组成,实现浮标组网、分布式时间同步和远程实时监控。所述浮标体内安装有内置的数据接收系统、信号传输系统和功率放大器。系统采用每秒1脉冲GPS (1PPSGPS)触发信号,实现同步发射和接收。这些浮标于2014年在东海海岸进行了声波层析成像实验。实验结果表明,自组织网络(SON)具有良好的工作性能,并能获得较好的信号,成功地应用于声速剖面反演。SSP反演的准确性表明了系统的可靠性和稳定性。整个系统的平均功率为1W。该系统具有较低的功耗和成本,可广泛、均匀地应用于海洋声层析成像、海洋监测等领域。
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Design and Realization of a Buoy for Ocean Acoustic Tomography in Coastal Sea based on NB-IoT Technology
This paper presents the design and realization of a buoy for coastal ocean acoustic tomography based on the narrowband-internet of things (NB-IoT) technology. The body of the buoy is made of unplasticised polyvinyl chloride (PVCU) pipe material. The buoy consists of two main parts: surface pharos and buoy body. The surface pharos part further consists of NB-IoT and global positioning system (GPS) modules which realize buoys networking, distributed time synchronization, and remote real-time monitoring and control. Whereas, the built-in data reception system, signal transmission, and power amplifier are inserted in the buoy body. The system uses 1pulse per second GPS (1PPSGPS) to trigger signal for synchronizing transmission and reception. The buoys are tested in the acoustic tomography experiment conducted at the coast of east China sea (ECS) in 2014. From the experiment, the results show that the self-organizing network (SON) with this kind of buoys can work well and achieve better signals which are successfully applied to the inversion of sound speed profile (SSP). The accuracy of the SSP inversion indicates system reliability and stability. The average power for the whole system is 1W. With lower power consumption and cost, the system is able to be widely and equally applied to ocean acoustic tomography, marine monitoring, and other fields.
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