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本文对由5台燃烧工业锅炉及其辅助设备构成的集中供热系统采用位总线分布式计算机网络进行监控管理,主计算机中采用TurboC/语言设计的监控管理软件,对被监测的300多个变量以模拟,参数表格等形式实时是,打印,并实现对主要变量的控制。 相似文献
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随着现代工业生产的发展,要求自动化立体仓库(AS/RS)能够实时接收任务信息,在高效率执行任务的同时实时反馈完成任务的信息,这就要求自动化立体仓库系统的管理、监控以及控制能够协调地工作。采用SQL Server 2005开发AS/RS管理数据库,Visual Basic开发人机界面,实现对信息和数据的科学管理;并应用工控组态软件西门子Win CC对系统进行硬件组态,对AS/RS自动作业监控,并完成管理与监控的通讯;以此保证AS/RS管理与监控系统管理、监控及控制方面的的可靠运行,使其具有管理方便、控制简单、监控实时性高、数据传输速度快等优点。 相似文献
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发酵过程的计算机监测和控制 总被引:2,自引:0,他引:2
介绍了发酵过程计算机监测和控制,讨论了发酵过程中所需监测和控制的参数及特点。在硬件方面,分析了发酵监控计算机硬件构造,发酵过程的分 式监控系统构成。在软件设计方面,分析了测控计算机的软件结果,上位机软件构造,发酵监控总流程等,重点讨论了发酵监控计算机的可靠性设计问题,发酵过程计算机监测和控制系统将会有助于我国发酵行业的生产自动化水平的提高,并上仍显著的经济效益和社会效益。 相似文献
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随着计算机技术、通信技术、检测与控制技术的发展,SCADA(Supervisory Control And Data Acquisition)系统正逐步取代人工监控方式对原油生产和计量的各个环节实现远程监测、控制和管理。目前油气田正逐渐采用工业无线监控系统对油井、计量站的数据和运行状态进行远程监控,实时监控油田各项工作参数和故障,实现智能化监控与管理。 相似文献
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<正>SCADA系统简介城市照明监控系统是一种SCADA(Supervisory Control and Data Acquisition)系统,即监视控制与数据采集系统,是以计算机为基础的监测控制与调度管理自动化系统,能实现远程数据采集、故障诊断,设备控制、测量、参数调节以及信号报警等各项功能。 相似文献
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介绍了一种应用EntekXM系列模块,解决大型风机设备的实时监测以及保护问题的方案。通过这一系统,可以将风机设备运行期间的实时数据通过以太网传输至上位机进行处理,实现了实时监测与故障诊断,同时对于风机设备运行期间的异常情况能够及时的发出警报和跳闸信号。 相似文献
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Gerotor pumps, as well known, are widely used in lubrication circuits of internal combustion engines for their simplicity, high efficiency and low costs.In this paper an experimental characterization of a Gerotor pump is shown. The research is a collaboration between the Hydraulic Power Research Group (HPRG) of the University of Naples “Federico II” and the Istituto Motori of CNR.The aim of this research is to investigate the possibility of using simple data to acquire, as vibrational data, on the pump under investigation to detect possible cavitation problem by implementing a proper mathematical procedure to this aim. As been demonstrated that these pumps are particularly subject to cavitation.The gerotor pumps are much subject to cavitate than expected, especially under particular operating conditions of the engine. Cavitation is also correlate to vehicle dynamics particularly with the recent tendency to reduce the mass of oil in the sump. Therefore, the research to avoid cavitation is crucial nowadays. Consequently this study has been firstly performed with an experimentation on the pump by monitoring the delivered oil flow-rate and the adsorbed torque on the pump shaft. An accurate analysis of the pressure oscillations in cavitation conditions, has been, also, conducted. Then, an accelerometer sensor has been properly located to study the cavitation with a fault diagnosis system based on vibration detection.The experimental tests have been performed on a test bench of the Hydraulic Laboratory of the University of Naples “Federico II” in Italy. The bench allows testing the pump working by varying the shaft speed, the oil temperature, the suction and the delivery pressure. The main measured parameters are shaft torque, oil flow rate, mean suction and delivery pressure and the instantaneous suction and delivery pressure.As expected, tests revealed the high influence of the suction pressure on the delivered oil flow rate, while no significant influence has been noted on the adsorbed torque. Furthermore, the pressure oscillations in the pump delivery are highly influenced by the suction pressure.A non intrusive accelerometer has been installed during the experimentation on the oil pump. Since the vibration due to cavitation is the main concern of this study, the accelerometer has been mounted at the suction port in the radial direction.More precisely, the paper presents a fault diagnosis system based on vibration detection. Firstly, a Fast Fourier Transform of the vibration signal has been computed. The investigation has been made with and without the presence of cavitation varying the pump rotation speeds. Limitations due to the detecting of the on line cavitation problems by monitoring the FFT vibration spectra have been overcame by implementing an alternative method based on stochastic approach.This diagnosis method of accelerometer time series analysis based on an Auto Regressive and Moving Average (ARMA) method has been used to determine the pump failure. The diagnosis results have demonstrated the ability of the proposed mathematical technique in the identification of cavitation phenomena proving that the proposed approach is a useful methodology to detect the presence of fault. The approach can predict, with good accuracy, pump failure in real time operation. In addition, a threshold vibration level in decibel scale is also fixed. 相似文献
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为实时监测煤矿用全液压钻机的钻进过程参数,实现钻机故障的快速诊断,设计了一种基于CAN总线的钻参仪,详细介绍了该仪器硬件、软件设计以及特点。该仪器采用分布式控制,通过CAN总线交换数据,不仅可实时监测并显示泵压、转速、泵量、油箱温度、油位和瓦斯体积分数等参数,还可通过计算机实现数据传输,满足了现场施工要求。 相似文献
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针对油田联合站现行人工加药方法的缺点,采用PLC控制单元,根据监测量及设定浓度控制变频器,通过自动检测输油管流量、温度,油压、泵电流、泵电压,从而控制加药量.下位机与上位机实时通讯,适时显示加药浓度,加药量和原油流量,并设有多种故障报警功能及按键互锁功能.采用该自动加药系统.降低了工人的劳动强度,提高了联合站加药精度和... 相似文献