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牟兆泉 《中国制造业信息化》2007,36(13):50-51
对SCADA系统中适用的几种通信方式进行了比较,给出了利用超短波无线数传电台和GPRS无线数据DDN业务建立SCADA系统通信平台的方案,实现了SCADA系统中信息的高速、实时有效传输,并展望了无线数据业务今后的发展方向. 相似文献
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中间数据库系统是用于采集和存储SCADA系统数据,作为SCADA系统数据对外应用的平台,其他各应用系统与中间数据库通过接口交换信息。这样既保障了SCADA系统的安全,又满足了各项业务的需要。SCADA系统实时服务器与中间数据库系统数据采集接口服务器的通信将采用OPC方式;中间数据库系统发布成以OPCSERVER和ODBC数据接口,供PPS、ERP、泄漏检测、离线仿真等应用系统提供数据支撑;OPC接口服务器负责将管道运行参数实时写入到中间数据库系统中,SCADA系统与应用系统无直接的数据接口,全部通过中间数据库服务器为各种应用提供数据。为提高中间数据库系统的时效性,其网路架构应和SCADA共存于一个网络之内,若实际要求不允许的话,可通过网闸及核心交换机内置的防火墙与SCADA系统进行物理隔离。 相似文献
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牟兆泉 《中国制造业信息化》2007,36(7):50-51,55
对SCADA系统中适用的几种通信方式进行了比较,给出了利用超短波无线数传电台和GPRS无线数据DDN业务建立SCADA系统通信平台的方案,实现了SCADA系统中信息的高速、实时有效传输,并展望了无线数据业务今后的发展方向。 相似文献
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本文概述了SCADA系统调控中心功能,并以浙江天然气输气管道SCADA系统调控中心为例,简要说明调控中心建筑、空调、消防及设备综合布置等。 相似文献
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介绍了数种无线通讯技术在污水处理厂SCADA系统中的应用,重点探讨了西门子SINAUT ST7系统的特点及其在污水处理厂SCADA系统中应用的实现方法.在上海申松污水处理厂近2年的稳定运行表明,该系统是值得推荐的,其独有的远程编程及诊断功能更是其他无线通讯系统所不能比拟的. 相似文献
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西部原油成品油管道是目前我国自动化程度最高的管道之一,该输油管道沿线各工艺站场的自动控制系统均采用以计算机为核心的全线监控和数据采集(SCADA)系统。为了保证整条输油管道安全、可靠地运行,火灾自动报警系统在该管道中得到了很好的应用。 相似文献
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佟维新 《仪器仪表标准化与计量》2010,(4):34-35,45
针对辽河油田天然气利用工程具体情况,提出了天然气管道工程的自动化系统设计方案、系统构成及功能。对SCADA系统、调压橇、火气系统、工业电视监控系统、计量系统、控制阀及执行机构各部分内容进行了详细介绍。 相似文献
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赵亚军 《仪器仪表标准化与计量》2014,(5):31-33
燃气管网通过SCADA系统实现了调度管理的自动化,本文先介绍SCADA系统的组成结构,主要包括调度中心、监控站点、通信系统。而后较为详细地逐一讲解其作用与功能,就如何保证燃气管网安全高效的运行进行论述。 相似文献
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本文介绍了先进的数据检测与调度控制系统一 SCADA系统在城市供水自动化中的应用,分析了应用系统结构、主要特点和优势。 相似文献
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The paper presents the experimental validation procedure of a simple cascade control system through number of architectures, such as SCADA, PLC, OPC and internet. The performance and effectiveness of individual architecture is evaluated on the basis of data rate, rise time, peak time and settling time. In this study, PID is implemented on Micrologix-1200 PLC and RSView-32 SCADA has been used with RSLinx communication software. The PLC–SCADA control loop is implemented with the functionalities such as, real time data analysis, set point modifications, automatic report generation and integration of data with MS-Excel and MS-Access. The enhancement in project data analysis is effectively done through the integration of PLC with Labview. The remote monitoring and control of process parameters is done using NET-ENI. The obtained result proved that the conventional SCADA based control system can be enhanced further more with PLC as well as NI-OPC server significantly. 相似文献
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输油管道泄漏监测SCADA系统设计与实现 总被引:1,自引:0,他引:1
介绍一套输油管道泄漏检测的SCADA系统设计和实现。采用3点一线式结构,集成了传感器技术、计算机技术、无线通信技术和自动化技术。描述了系统的组成、网络结构及数据采集。采用了瞬态负压波法、流量输差法和压力流量综合法等多种泄漏诊断方法。利用LabView平台开发了系统软件。该系统具有可扩展性。 相似文献
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《Measurement》2014
A Supervisory Control and Data Acquisition (SCADA)/Programmable Logic Control (PLC) system is always used to control small industries like water treatment stations; electric power stations and irrigation systems. Oil and gas refineries generally rely on a Distributed Control System (DCS) to provide all process and equipment control functionality. In this paper, a SCADA/PLC system is used to control a whole oil refinery instead of the conventional control through DCS. The design and specific implementation method of a SCADA/PLC real system in an oil refinery process is introduced. It consists of four main units: a crude oil storage unit, a crude oil pretreatment unit, a distillation unit and products storage/dispatch unit. The output products from crude oil refinery process are Liquefied Petroleum Gas (LPG), Naphtha, Gasoline, Kerosene and Diesel that have a great usage in our daily life. The reason for using the Multipoint Interface/Decentralized Peripherals (MPI/DP) connection in main control loop instead of Ethernet connection is that MPI/DP speed is 185 kbps and Ethernet connection speed is 10/100 kbps, which increases the speed of transfer data through the system. Displacer level transmitters and automatic servo level gauging transmitters are used for measuring levels in the crude oil refinery process. Also differential pressure flow transmitters are used for measuring flow rate. Temperature transmitters with thermocouple temperature elements are used for temperature control. Constructing a highly stable and reliable SCADA/PLC system instead of DCS must realize automatic management and control of oil refinery process in order to avoid the waste of manpower, physical resources, and also to increase the safety of workers. 相似文献