论文标题
为基于云的桥梁长期监控开发物联网传感器和基于云的服务器
Development of IoT Sensor and Cloud-based Server for Cloud-based Bridge Long-term Monitoring
论文作者
论文摘要
随着社会基础设施的迅速年龄，建立数字SOC（社会间接费用）维护系统以进行预防性维护至关重要。使用安装在结构上的IoT传感器，可以快速识别由结构产生的异常信号，并且可以做出最佳判断。在这项研究中，将多项IOT传感器集成到用于长期监控的数字SOC监视系统中，用于自动化和功能强大的数据分析，并用于创建要执行的数据库：（1）多项式感测，（2）长期操作以及（3）基于LTE的直接通信。创建的传感器包括五个应变感应轴和三个加速轴，并且还具有事件驱动的功率管理系统，该系统只有在振动达到一定阈值或启动计时器时才打开传感器。电力管理系统和额外的太阳能电池板充电可能会使长期操作成为可能。使用低功率LTE CAT.1连接实现了从传感器到服务器的实时数据传输，该连接不需要其他网关设备。此外，在云服务器上创建了一种位移融合技术，以在接收传感器的多变量数据后获得无参考的结构排量。使用钢铁路和混凝土梁桥来实验评估建议的数字SOC系统。
As social infrastructures rapidly age, it is crucial to create a digital SOC (Social Overhead Capital) maintenance system for preventive maintenance. Using IoT sensors installed on the structures, abnormal signals produced by the structures may be rapidly identified and the best judgments can be made. In this study, a multimetric IoT sensor was integrated into a digital SOC monitoring system for long-term monitoring, use in a cloud computing server for automated and powerful data analysis, and for creating databases to perform: (1) multimetric sensing, (2) long-term operation, and (3) LTE-based direct communication. The created sensor included five strain sensing axes and three acceleration axes, and it also had an event-driven power management system that only turned on the sensors when the vibration reached a certain threshold or the timer started. Long-term operation might be made possible by the power management system and an extra solar panel charging. Real-time data transmission to the server from the sensors was accomplished using low-power LTE CAT.1 connection, which does not need an additional gateway device. Additionally, a displacement fusion technique was created on the cloud server to get reference-free structural displacement for ambient structural assessment after receiving multi-variable data from the sensor. A steel railroad and concrete girder bridge were used to experimentally evaluate the suggested digital SOC system.
