基于LoRa的城市立交桥远程监测数据采集系统

针对城市立交桥运营期间的结构健康监测问题,基于LoRa无线网络技术设计并研发了城市立交桥远程监测数据采集系统,并进行了工程应用。系统以物联网架构为基础,由安装于城市立交桥现场的传感器数据采集节点、无线传输节点和部署在云端的监测云平台的3部分组成。现场设备通过LoRa技术以星形拓扑结构进行无线组网,将采集的监测数据远程上传至云平台,最终实现了监测数据的自动采集、无线传输、远程监控、智能预警的全功能流程。监测结果表明,基于LoRa的城市立交桥远程监测数据采集系统对提高城市桥梁运营期间的安全管理水平具有积极意义。

Data Acquisition System for Remote Monitoring of Urban Interchange Based on LoRa

To resolve the structural health monitoring problem during the operation of the urban interchanges,a remote monitoring data acquisition system is designed and developed based on LoRa wireless network technology.The system is based on the Internet of Things architecture and consists of three parts:the sensor data acquisition nodes installed on the urban interchange site,the wireless transmission nodes,and a monitoring platform deployed on the cloud.The nodes are wirelessly networked in a star topology with LoRa technology,and the collected monitoring data is uploaded to the cloud platform remotely.Eventually,the process of automatic monitoring data collection,wireless transmission,remote monitoring,and intelligent early warning is realized.The monitoring results show that the data acquisition system for remote monitoring of urban interchange based on LoRa is significant to improve the safety management level of urban bridge.