水环境实时调控DSS与3D航道仿真平台的开发及应用

发布时间：2018-06-27 22:55

本文选题：决策支持系统 + 水环境　；参考：《华北电力大学》2014年硕士论文

【摘要】：随着计算机与测绘技术的快速发展,基于GIS与虚拟现实技术的专业决策支持系统越来越多的应用于各行业预警决策管理中。对专业决策领域计算机技术应用切入点与实现方法的研究,对充分利用计算机等现代高新技术,提高行业决策能力具有重要的意义。论文以科技部水专项课题“北运河水系水环境实时调控决策支持系统”与国家‘十二五’科技支撑计划课题“多体系协同集成的智能航运关键技术研究”为研究背景,基于GIS与虚拟现实技术开发了水环境实时调控决策支持系统与三维数字航道仿真平台,深入研究了复杂大系统的集成方法及三维仿真平台的构建技术,主要研究内容与成果如下： (1)研究了综合数据监测体系、数据库、流域入河污染物负荷模型、河流水环境模型、水环境承载能力与负荷动态调控模型以及GIS平台等众多模块的水环境实时调控决策支持系统,从系统组成与集成的角度阐述了建立水环境实时调控决策支持系统的总体框架。对多种数学模型间的集成链接方法、GIS显示体系与数学模型间的交互方法、水环境状态实时模拟与基于调控措施的方案模拟等系统集成的关键环节进行了具体分析,提出了水环境实时调控与数字化管理功能在复杂大系统中的实现思路与方法,为复杂水环境调控系统的开发与集成提供了简单实用的集成模式。开发系统在北运河水系水环境管理中得到了应用。 (2)研究了三维数字航道仿真场景构建技术,实现了长江上游不同精度层次的三维数字航道模型。重点探讨了基于osgEarth的海量数据建模与渲染关键技术,研究了通过数据切片存储方式与加载调度原则实现高程、影像等海量数据实时调度的方法,实现了基于视点动态变化的数据瓦片分页调度与渲染机制。通过对osgEarth的三维场景数据配置文件Earth文件的研究,实现了整个系统各种切片数据的综合管理。基于Apache搭建了网络服务器,实现了影像、高程、矢量等海量数据的网络传输与数据共享。 (3)开发了数据库、GPS定位模块、航道预警模块等功能模块,并与三维仿真场景、水动力学数值模型相集成,构建了三维数字航道仿真平台,为提高航运效率与安全预警能力提供了平台工具与支撑技术。具体的开发内容包括：完成了数据库设计并实现了数据管理可视化模块；开发了GPS定位数据解析与传输模块,实现了船舶分布状况显示、航行轨迹定位回放功能；实现了远距离视点跟随模式与驾驶员视角的船舶驾驶模式,结合船舶定位信息与水动力学模拟结果,为船舶航行提供位置信息、水流流态信息、周围来往船只信息、过桥与限高等信息,为船舶的安全航行提供综合预警信息。
[Abstract]:With the rapid development of computer and surveying technology, the professional decision support system based on GIS and virtual reality technology is more and more used in the early warning decision management of various industries. The research on the application and realization of computer technology in the field of professional decision making is of great significance to make full use of modern high and new technology such as computer and to improve the ability of decision making in the industry. The research background of this paper is "the decision support system of Water Environment Real-time Regulation and Control in North Canal", a special water project of the Ministry of Science and Technology, and the national '12th Five-Year Plan' project, "Research on key Technologies of Intelligent Shipping with Multi-system Synergy and Integration". Based on GIS and virtual reality technology, the water environment real-time control decision support system and 3D digital waterway simulation platform are developed. The integration method of complex large scale system and the construction technology of 3D simulation platform are deeply studied. The main contents and results are as follows: (1) the integrated data monitoring system, database, pollutant load model, river water environment model are studied. The water environment real-time control decision support system based on the water environment load bearing capacity and load dynamic control model and GIS platform is introduced. The overall framework of the water environment real time control decision support system is expounded from the point of system composition and integration. The key links of system integration such as the interaction between GIS display system and mathematical model, the real-time simulation of water environment status and the scheme simulation based on control measures are analyzed in detail. The idea and method of realizing the function of real time control and digital management of water environment in complex large scale system are put forward, which provides a simple and practical integrated mode for the development and integration of complex water environment control system. The development system has been applied in the water environment management of the North Canal. (2) the 3D digital waterway simulation scene construction technology has been studied and the 3D digital waterway model with different precision levels has been realized in the upper reaches of the Yangtze River. The key technologies of mass data modeling and rendering based on osgEarth are discussed, and the methods of real-time scheduling of mass data, such as elevation and image, are studied through data slice storage and loading scheduling principle. The scheduling and rendering mechanism of data tile paging based on dynamic change of viewpoint is implemented. Through the research on the Earth file of 3D scene data configuration file of osg Earth, the integrated management of all kinds of slice data in the whole system is realized. The network server is built based on Apache, which realizes the network transmission and data sharing of massive data such as image, elevation, vector and so on. (3) the function modules of database positioning module, waterway warning module and 3D simulation scene are developed. A 3D digital waterway simulation platform is constructed by integrating the hydrodynamic numerical model, which provides a platform tool and supporting technology for improving shipping efficiency and safety early warning ability. The specific development contents include: completed database design and data management visualization module, developed GPS positioning data analysis and transmission module, realized the ship distribution status display, navigation track positioning playback function; In this paper, the ship driving mode of long distance view following mode and driver's angle is realized. Combined with ship positioning information and hydrodynamic simulation results, the position information, water flow state information and surrounding ship information are provided for ship navigation. The information of bridge crossing and height limit provides comprehensive warning information for the safe navigation of ships.
【学位授予单位】：华北电力大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TP391.9;U697;X84

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