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文章从赋予机电系统新功能、安装新设备、增加系统功能、创新人员培训方式和改进现有的巡检管理方式等方面,制定了远程巡检管理对策,将机电技术人员完成的巡检工作改为由监控室值班人员完成,提高巡检工作的信息化水平.同时,通过创新和改进各种巡检方式和管理办法,提高机电设施的维护巡检效率及信息化水平,降低运营管理费用,使隧道机电设施... 相似文献
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文中通过无人机技术获取遥感监测影像、Laravel开发模式、Cesium 3D三维模型,整合燃气管线信息,构建了基于GIS的长输管道无人机巡检管理平台,实现了无人机巡视、GIS管理的智能化巡检,并应用于山东省滨州市某天然气长输管道,提高了长输管道的巡检作业效率. 相似文献
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随着计算机网络技术、信息技术的高速发展,计算机应用已从单机的文字处理、文档管理和数据管理等功能转移到强大的网络集成功能.信息数据的采集、传递、处理工作通过计算机网络变得尤为简单.本文简述了计算机网络功能在西宁到湟源一级公路工程管理工作中的应用. 相似文献
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基于GIS和SCADA技术的油气储运生产调度系统 总被引:1,自引:2,他引:1
利用GIS空间分析功能、计算机、通信网络和SCADA系统实时数据采集与自动控制功能对整个油气储运生产运行过程的主要参数、管道信息、设备运行状况进行动态监测,实时调度和自动化控制,实现自动化信息管理。并以GIS为基础,整合管线和设备周围的地理信息、管线和设备本身的空间信息及其图形信息、维护信息、监控信息等信息于一体,将管线和设备的运行状态借助地理空间实时地提供给使用者,同时结合SCADA系统,采集生产实时数据和对各种生产工况进行自动控制,并根据经济、技术指标和实际情况,进行优化控制反馈,完成对油气储运生产各个环节的合理配置,保障油气储运生产经济、安全可靠运行。 相似文献
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文章通过对高速公路气象信息采集系统的研究分析,提出高速公路气象信息采集系统设置的重要性以及必要性,同时,对信息采集系统进行工作的整体过程以及工作过程具有的现实意义进行了阐述。 相似文献
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针对广西高速公路配电房多且分散、维护人员工作量大、巡检效率低、发现问题不及时等问题,文章提出了高速公路配电房智能巡检机器人系统设计方案。该方案通过配置视频图像识别、红外热像仪和温湿度传感等传感器,对配电房的运行状况进行实时监测、预警处理,代替人工巡检完成日常精准巡检工作。试验结果表明,所提出的巡检机器人系统运行稳定,可以快速准确地实现故障判断,有效地代替传统人工巡检方式,提高工作维护效率。 相似文献
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Pedestrians as compared to vehicular traffic enjoy a high degree freedom of movement even in heavily congested areas. Consequently, there are more alternative links available to pedestrians between a given origin‐destination (O‐D) pair. This paper describes a study done by the University of Calgary to evaluate the factors affecting the choice of route on intra‐CBD trips or trips within the Central Business District (CBD). An origin destination survey conducted in downtown Calgary, Alberta enabled the identification of the most significant factors influencing the choice. These factors were analyzed in relation to the physical characteristics of the location, personal characteristics of the trip maker and the type of the trip. It appears that most people chose the shortest link and factors such as the level of congestion, safety or visual attractions were only secondary. This suggests that the length should be made a major consideration when planning and designing pedestrian links. 相似文献
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This paper estimates the efficiencies and productivity changes of 12 international airports in the Asia-Pacific region based on data from 1998 to 2006. We apply stochastic frontier analysis (SFA) to compute efficiency estimates and use the Malmquist productivity index (MPI) to analyze productivity changes. We use the SFA model with a translog-type production function after testing the statistical hypotheses. According to the results of the SFA hypothesis tests, airports have experienced a technological regression; the deviations from the efficiency frontier are caused more by technical inefficiency than random noise. However, the inefficiency was found to decrease. The MPI reveals a declining trend resulting more from technological change than from efficiency change, with a decrease in inefficiency. Taken together, both the hypothesis tests and the MPI not only provide consistent conclusions, but also suggest that airports should concentrate on technological progress. 相似文献
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天然气自动计量系统有多种组态软件,由于软件的不相通性,造成了计量系统数据采集的通用性差、数据传输与入库的时效性差、数据利用的可靠性低.结合各组态软件的实际情况,从设计上充分利用Oracle大数据处理能力以及Partition(分区表)的特性,实现历史数据的存储,应用WebService与COM+数据访问组件提供多层数据访问架构,采用OPC与DDE工业数据交换协议,实现了各站场计量数据的实时上传,为连续数据采集和实时监控提供了可能,节约了改造成本. 相似文献
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介绍了城市轨道交通工程中杂散电流不同的监测系统的构成,分析了集中式、分散式和智能型等监测系统的配置和功能,以及智能型实时在线监测系统的重要意义,为轨道交通工程杂散电流监测系统的选择与应用提供参考。 相似文献
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明确埋地管道防腐保温层的技术评价标准,对埋地钢质管道的安全运行,延长管道使用寿命具有重要意义。为了对埋地管道防腐保温层做出有效评价,从间接检测与开挖检测2个方面,结合现场检测数据,提出了基于防腐保温层的电流衰减率、绝缘电阻率、质量状况与厚度的分级评价标准及基于4种评价指标的综合评判方法。工程实践表明,该评价标准对防腐保温层是否存在失效能做出有效判断。 相似文献
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《Transportation Research Part A: General》1991,25(6):407-418
The main deficiency of most current modeling approaches to transportation can be identified as neglect of the integration of existing geographical knowledge in regard to the ex ante transport/land use modeling approaches, with its focus on territorial dynamics and theory development. This paper addresses this aspect of the problem by introducing a theoretical and methodological framework for the analysis of the interrelationship between land uses. The analysis attempts to determine to what extent the functional land use in a city can be considered an ordered pattern. The order sought does not rely on purely spatial configurations, but on the correlation of transportation and land use. The first section of this paper focuses on theoretical considerations. It stresses the fact that conventional approaches do not apply in the present context. It then suggests an alternative based on areas of influence and measured in terms of level of attractance of land uses. The second describes a procedure based on this alternative following the remarkable contribution of Hanjoul, Beguin and Thill. An application of this procedure to the analysis of Shanghai is then examined. Finally, an evaluation of the strategies for optimizing the interrelationship between land uses is presented. The paper concludes with a possible research agenda. 相似文献
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Joseph N. Prashker 《Transportation》1979,8(4):329-346
Reliability of travel modes was found to be the most important characteristic of transportation systems in several attitudinal investigations of individual travel behavior. This paper represents the first part of a research effort aimed at gaining a better understanding of the characteristics of reliability of transportation modes in urban travel. In this research, reliability characteristics are identified; their importance relative to each other is assessed, and an insight into possible structure of an objective reliability index is discussed. The research is based on perceived values of reliability, which were identified through a large attitudinal survey conducted in the Chicago metropolitan area. 相似文献