基于物联网MQTT和虚幻引擎的虚实互动技术  

Virtual⁃real Interaction Technologies Based on IoT MQTT and Unreal Engine

作　　者：孙培培 潘永杰 查桓 权全 庞婧婧 柴海涛 SUN Peipei;PAN Yongjie;ZHA Huan;QUAN Quan;PANG Jingjing;CHAI Haitao(Railway Engineering Research Institute,CARS,Beijing 100081,China;Tieke Design Co.Ltd.,Beijing 100081,China;Anhui Provincial Group Limited for Yangze-to-Huaihe Water Diversion,Hefei 230000,China)

机构地区：[1]中国铁道科学研究院集团有限公司铁道建筑研究所,北京100081 [2]铁科设计有限公司,北京100081 [3]安徽省引江济淮集团有限公司,合肥230000

出　　处：《铁道建筑》2024年第10期130-136,共7页Railway Engineering

基　　金：湘江实验室项目(22XJ01003);安徽省引江济淮集团有限公司科技研发项目(YJJH-ZT-ZX-20210923429)。

摘　　要：针对数字孪生虚实映射中数据更新实时性不够、展示效果差等问题,本文以虚幻引擎为孪生平台,提出了多领域多层次模型融合技术路线。给出了典型温湿度传感器、烟感传感器、断电传感器、漏水控制器、声光报警器的数据格式,开发了规则引擎模块,定制研发数据传输单元(Data Transfer unit,DTU),明确了DTU及虚幻引擎MQTT(Message Queuing Telemetry Transport)的连接设置方式。基于RS485协议对上述传感器串口数据进行解析和传输。以某建筑为例,构建高逼真的数字孪生场景,实现了从监测设备到物联网平台直至孪生平台的数据流转、展示分析和报警,形成了可感知、可控制、可交互、可展示的虚实互动。研究成果为工程结构监测数字孪生虚实映射提供了有益尝试。To address issues such as insufficient real-time data updates and poor display effects in digital twins mapping,this article proposes a multi-domain and multi-level model fusion technology approach using the Unreal Engine as the twinning platform.It provides data formats for typical temperature and humidity sensors,smoke sensors,power failure sensors,water leakage controllers,and acoustic-optical alarms,and develops a rule engine module and customized Data Transfer Unit(DTU).It specifies the connection setup between DTU and Unreal Engine MQTT(Message Queuing Telemetry Transport),and based on the RS485 protocol,parses and transmits serial data from the aforementioned sensors.Using a specific building as an example,a highly realistic digital twinning scene is constructed,achieving data flow,display analysis,and alarm functions from monitoring equipment to the IoT platform and then to the twinning platform,forming a perceivable,controllable,interactive,and displayable virtual-real interaction.The research results provide a useful attempt for digital twins mapping in engineering structure monitoring.

关 键 词：工程结构监测 物联网 MQTT协议 DTU 虚幻引擎 虚实互动 

分 类 号：U291.69[交通运输工程—交通运输规划与管理] TU201.4[交通运输工程—道路与铁道工程]