河道流量视频测验技术应用研究及误差分析  

Method Research and Error Analysis of River Flow Measurement Based on Video

作　　者：陈梦 陈华[1] 黄贵平 王衡生 王晓昇 高亚芬 项伍林 刘炳义 王俊 CHEN Meng;CHEN Hua;HUANG Gui-ping;WANG Heng-sheng;WANG Xiao-sheng;GAO Ya-fen;XIANG Wu-lin;LIU Bing-yi;WANG Jun(State Key Laboratory of Water Resources and Hydropower Engineering Science,Wuhan University,Wuhan 430072,Hubei Province,China;Qilijie Hydrological Station,Fujian Hydrology and Water Resources Survey Center,Jianou 353100,Fujian Province,China;Fujian Hydrology and Water Resources Survey Center,Fuzhou 350024,Fujian Province,China;Wuhan Dashuiyun Technology Co.,Ltd.,Wuhan 430070,Hubei Province,China)

机构地区：[1]武汉大学水资源与水电工程科学国家重点实验室,湖北武汉430072 [2]福建省水文水资源中心七里街水文站,福建建瓯353100 [3]福建省水文水资源中心,福建福州350024 [4]武汉大水云科技有限公司,湖北武汉430070

出　　处：《中国农村水利水电》2023年第5期106-110,118,共6页China Rural Water and Hydropower

基　　金：国家重点研发项目(2019YFC1510602);湖北省重点研发项目(2020BAB029)。

摘　　要：新时期背景下的智慧水利建设对流量测验的简便性、准确度和连续性提出了更高要求,传统的接触式测流方法逐渐难以满足需要,为了充分利用现代化视频图像识别和人工智能技术优势,从而为河道流量测验工作提供全新的解决方案,以视频非接触式流量测验方法为研究对象,研究建立基于时空影像法(Space-Time Image Velocimetry,STIV)的视频测流计算方法,选取福建省闽江建溪流域七里街水文站作为示范应用站进行流量比测试验,并对试验结果进行精度评估及误差分析。结果表明:以水位分段的一元线性定线方式建立七里街水文站的流速流量相关关系效果较好,实际有效比测水位范围为89.41~100.43 m,流量范围为69.31~9122.57 m^(3)/s,关系线系统误差最大为0.11%,随机不确定度最大为7.80%,相对误差均在±8%以内,与比测结果对照良好,各项指标精度符合规范要求,据此得到的水位~流量关系曲线可作为七里街水文站的推流方案;视频测流方法作为非接触式的新仪器方法具备测量快速、安全高效、全量程监测、受极端情况影响小、成本低等优势,测流结果精度较高,安全性好,测流范围广,具备应用于实际测验工作的可行性和强大潜力,可以有效提高流量测验效率、减轻外业劳动强度、节省人力物力,对其深入研究和发展应用可以进一步推动我国水文测验现代化和智慧化建设。The construction of intelligent water conservancy in the new era puts forward higher requirements for the simplicity,accuracy and continuity of flow measurement,and the traditional contact flow measurement method is gradually unable to meet the needs.In order to make full use of the advantages of modern video image recognition and artificial intelligence technology,so as to provide a new solution to river flow measurement,this paper takes the video non-contact flow measurement method as the research object,studies and establishes a video flow measurement calculation method based on space-time image velocimetry(STIV),selects Qilijie Hydrological Station in Jianxi Basin of Minjiang River in Fujian Province as a demonstration application station for flow comparison test,and evaluates the accuracy and error analy⁃sis of the test results.The results show that the effect of establishing the velocity and discharge correlation of Qilijie Hydrological Station by means of the univariate linear alignment of water level segmentation is good.The actual effective comparison water level range is 89.41~100.43 m,the flow range is 69.31~9122.57 m^(3)/s,the maximum systematic error of the correlation line is 0.11%,the maximum uncertainty of the random machine is 7.80%,and the relative error is within±8%.Compared with the comparison results,the accuracy of various indica⁃tors meets the specification requirements,The water level discharge relation curve thus obtained can be used as the flow pushing scheme of Qilijie Hydrological Station.As a new non-contact instrument method,video flow measurement method has the advantages of fast measure⁃ment,safety and efficiency,full range monitoring,less affected by extreme conditions,low cost,high accuracy of flow measurement re⁃sults,good safety,wide range of flow measurement,feasibility and strong potential for practical testing work,which can effectively improve the efficiency of flow measurement,reduce the intensity of field labor,and save human and material resources.The in-depth r

关 键 词：时空影像法 流量计算方法 视频测流 

分 类 号：TV697[水利工程—水利水电工程]