共查询到20条相似文献，搜索用时 281 毫秒
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《邢台职业技术学院学报》2017,(1):92-96
随着电子商务的日益盛行,用于货运的车辆不断增加,如何合理调度和管理各种运输车辆是个值得研究的重要问题。文章采用物联网相关技术,设计并实现了基于物联网的车辆调度管理系统,给出了采用GPRS、GPS、Google Map和基于ARM11的车载终端相结合的系统解决方案,实现了全天候定位、电子地图显示、车辆实时调度、监控、管理、历史运行轨迹回放等功能,并对系统进行了详细测试。该系统可以获取实时车辆的位臵、速度、行驶状态等信息,并把所获取的信息通过GPRS技术回传处理,有效解决了现行车辆调度中所存在的问题。 相似文献
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陈良维 《成都航空职业技术学院学报》2015,(4):37-41
基于DSP的运砂车统计系统能远程监控采砂场的采砂活动。它的硬件由DSP处理模块、无线通信模块和太阳能供电模块组成,采用Vibe背景建模方法对运动目标进行检测,实现了对车辆目标的检测及统计功能。管理人员能通过客户端随时查看运砂车辆状况,了解砂场的采砂情况。实验结果表明,本系统能够实时有效的检测车辆的数量,可应用于砂场、油田,或其他户外生产现场。 相似文献
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随着我国经济发展,车辆作为主要交通工具,在促进企业发展中发挥着重要作用.对于油田企业,要营造良好的生产与运营秩序,必须要对企业内部公务用车实施规范化管理.本文通过分析油田企业内部公务用车特点,分别从技术与调度管理角度提出建立规范化管理应采取的有效措施.以期通过本文的阐述为规范油田企业内部车辆管理,促进企业规范化运作提供几点借鉴. 相似文献
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多车队实时指挥调度突破了一般指挥调度系统的单纯监控车辆和仅作简单指挥的局限性,把指挥调度的对象从单辆车扩展到同时对多个车队的实时监控和指挥调度,并在GIS地图上实时直观地图形化展示车队情况,使得车队、沿路警力、指挥中心能够密切配合,保障大型活动中交通及人员入场、散场的通畅有序。 相似文献
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移动监控定位系统在车辆调度、航海导向、公安巡防、银行运钞车监控等领域应用十分广泛.介绍了移动监控定位系统的应用,解释了基于GPS/GSM的移动监控定位系统的结构,并给出了移动监控定位系统中移动单元的硬件电路和软件设计构思. 相似文献
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随着车辆监控调度系统在国民生活各个方面的深入应用,实时性,稳定性,高效性都是非常迫切的问题。本文结合GPS（全球定位系统）和GSM通信方式来传输数据,同时在GIS（地理信息系统）软件的基础上作二次开发,设计出了一种移动终端监控调度系统方案,经过系统硬件选型和软件编制,基本上实现了移动终端实时监控调度,而且系统模块性强,稳定可靠,在公交、航运、邮运中将有十分广阔的应用前景。 相似文献
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陈汉标 《江西电力职业技术学院学报》2022,35(1):11-12
电力调度对维护电力系统稳定性有重要作用,它在电网工作中扮演着指挥者、协调者、监控管理者的角色,一旦电力调度运行监控工作出现失误,必然会导致整个电网受到影响,甚至会出现用电末端停电等故障现象.因此,为了保证电力系统整体运行的稳定性,确保用电末端的供电可靠性,就需要加大对电力调度运行监控管理的力度.基于此,从电力调度工作内... 相似文献
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霍艳玲 《邢台职业技术学院学报》2014,(1):99-101
基于手机GPS定位的外勤监控管理系统以企业和组织对外勤人员及移动资源的有效管理为背景,利用手机GPS定位对外勤人员和工作过程的实时、精确化管理,加强与外勤人员的交流,使企业和组织可以轻松实现对移动设备、外勤人员的监控、调度、考核等管理方式,也是移动资源管理信息化的技术突破。主要包括移动监控和管理、实现实时监控、历史轨迹查询、调度管理、SOS报警等,为用户随时随地的提供信息服务。 相似文献
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王小玉 《西安文理学院学报》2006,9(1):44-47
为实施管道安全风险评估,需要收集、存储和处理大量的管道信息,为此开发一套全国石油天然气管道安全管理信息系统.该系统在Microsoft Visual Basic 6.0环境下设计了一系列可视化界面并通过Access数据库解决了管道地理信息和属性信息的动态管理,在电子地图上利用MapInfo MapX 5.0控件实现了管线图形的动态管理,并通过管线内插节点解决了大跨度管线图形的正常显示及MapX节点编辑模式下系统异常的问题.该系统已被用户用于石油天然气管道信息管理,效果良好. 相似文献
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The pipe configuration and internal loads along the pipeline during the pipeline laying process have long been the focus of engineers. Most researchers simplify the seabed to be rigid and the water to be calm, ignoring the pipe embedment into the seabed and the influence of ocean currents. In this paper, a novel numerical approach is proposed for the laying of pipelines in the so-called J-lay method, taking into account the importance of both pipe embedment and ocean currents. The pipeline is divided into two parts, one part suspended in water, and the other laid on the seabed. The continuity of the two parts at the touch down point （TDP） is guaranteed to make a whole. The feasibility of the model is proved by the comparison between the present model and an analytical model, which shows good agreement in both pipeline configuration and bending moment distribution. Finally, para- metric study was performed to consider the influence of current velocity, water depth, top inclination angle, and seabed stiffness, and conclusions are drawn. 相似文献
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长输管线在石油工程中大量使用 .穿河段管线由于河水的冲刷变得悬空 ,如果管线附近的涡泻频率接近管线的固有频率 ,将引起悬空管线的共振 ,并且导致管线的破坏 .本文将悬空管线视为弹性基础上的半无限长梁 ,建立了悬空段管线和埋入土中管线的偏微分振动方程 ,提出了计算管线固有频率的迭代计算方法 ,实例计算结果同现场测试结果基本一致 . 相似文献
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Pipeline integrity defect is a considerable portion in all the defects.Therefore,the study on detection technique is of great concern to the owners of pipelines.A real-time monitoring system of pipeline defect is established.For unexpected accidents of pipeline leakage,several methods of signal processing,including wavelet analysis are utilized.The leakage can be located accurately in time.This system is applied to many long distance pipelines in China,which has made great contributions to the economy. 相似文献
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王书英 《邢台职业技术学院学报》2012,29(4):66-69
从社区经理劳务派遣员工人员结构和分布,工资、人成本费用和项目来分析社区经理劳务人员薪酬管理的现状及存在的问题、原因和危害。把社区经理劳务人员纳入公司的岗位管理体系和编制定员,进行岗位动态管理,制定社区经理劳务派遣员工薪酬管理办法,同时要根据社会和企业的发展,及时完善劳务人员薪酬管理体系,保障企业战略发展目标的实现。 相似文献
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in order to evaluate the seismic reliability of water distribution system and make rehabilitation decisions correspondingly, it is necessary to assess pipelines damage states and conduct functional analysis based on pipe leak- age model. When an earthquake occurred, the water distribution system kept serving with leakage. By adding a virtual node at the centre of the pipeline with leakage, an efficient approach to pressure-driven analysis was developed for simulating a variety of low relative scenarios, and a hydraulic leakage model was also built to perform hydraulic analy- sis of the water supply network with seismic damage. Then the mean-first-order-second-moment method was used to analyse the seismic serviceability of the water distribution system. According to the assessment analysis, pipes that were destroyed or in heavy leakage were isolated and repaired emergently, which improved the water supply capability of the network and would constitute the basis for enhancing seismic reliability of the system. The proposed approach to seismic reliability and rehabilitation decision analysis on water distribution system is demonstrated effective through a case study. 相似文献
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XU Jing-jing WU Yi-min School of Electromechanical Engineering Automation Shanghai University Shanghai China 《上海大学学报(英文版)》2000,(Z1)
l lgtroductionIt is well known that the safety of pipeline systemsfor transpofting oil or gas is very important in the oil orgas industry, and it will be a catastTophe if an accidentoccurs. Howevef, there are a lot of methods for ensuringthe safety of such pipeline systems, for instance,TopRAM program['] (TransCanada Pipeline RiskAssessment Model), IAP program['] (The integrityAssessment Program), In-line inspection tools for crackdetection in gas and liquid pipeline['l etc. The safety … 相似文献
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Three-way pipes, T and Y pipes, are very important connecting components in pipeline systems, their strength are related to the
safety of pipelines. In the case that crack is not detected in the three-way pipe, ANSYS finite element program version 5.6 is applied to study
the stress distribution of the three-way pipe and to obtain the optimum fillet radius in the crotch region of the two pipes. The reasonable
intersection angle φ of the two pipes is also obtained. In the case that a surface crack is detected in the three-way pipe, the maximum stress
intensity factor (SIF) near the front of the surface crack is studied. 相似文献