【摘要】 本文设计了一种新型基于窄带物联网LoRa通信机制、自组无线网的可抛弃式微型浮标,能解决目前浮标存在的通信传输不稳定、采集精度低、体积大、成本高等普遍性问题。该浮标可大量放置,不回收,随海流漂移,可按设定周期向云端服务器发送海流位置、流速和浪高等参数。文中首先介绍了带减摇鳍和舵叶的微型浮标的结构设计和通信网络设计,然后通过ANSYS Workbench对微型浮标优化前后的结构进行流固耦合仿真;最后对浮标进行了水槽试验,通过流固耦合仿真和水槽试验证明带减摇鳍和舵叶的微型浮标稳定性强,能较好地反映水动力学参数,对监测海洋表层流水动力参数有一定应用价值。更多还原

【Abstract】 A new type of disposable micro buoy based on narrowband IoT LoRa communication mechanism and self-organizing wireless network is designed in this paper, which can solve the current buoy’s common problems such as unstable communication transmission, low acquisition accuracy, large volume, and high cost. The buoy can be placed in large quantities without being recycled and drifting with the ocean current. It can send parameters such as ocean current position, flow velocity and wave height to the cloud server according to a set period. In this paper, the structure design and communication network design of the micro-buoys with stabilizer fins and rudder blades are introduced, before using ANSYS Workbench to perform fluid-solid coupling simulation on the structure before and after the optimization of the micro-buoy. Solid-coupling simulation and tank test prove that the microbuoy with fins and rudder blades has strong stability, which can better reflect the hydrodynamic parameters, and has certain application value for monitoring the hydrodynamic parameters of ocean surface flow.更多还原