无线通讯技术在远程数据采集中的应用

介绍了一种基于以太网调制解调器的通讯系统在远程数据采集中的应用。讨论了该系统的工作原理和系统组成，系统运行的结果表明：该系统稳定可靠，维护方便，克服了有线数据采集的局限性，为解决冶金工业环境下的远程数据采集提供了解决方案。     

一个工厂变电站运行参数的监测与远程数据通信的计算机系统

本文介绍了一个110kV变电站运行参数的计算机监测和远程数据通信系统的原理及其实现方法。系统主要从实时角度出发,成功地实现了多功能并存的实时响应。该系统的应用解决了合理安排用电问题,取得了显著的经济效益。     

HARSVERT-A10/045高压变频调速系统在除尘风机上的应用

介绍了HARSVERT-A10/045高压变频调速系统在铁合金矿热炉除尘器上的应用。变频器输入侧采用多重化移相变压器实现隔离和谐波抵消,无须功率因数补偿、谐波抑制装置。多脉冲整流技术的应用使得变频器电网侧谐波可满足IEEE519-1992标准和GB/T14549-93标准。该高压变频调速系统的应用,可确保矿热炉除尘器风机的稳定运行,降低了用电量,提高了经济效益,进一步保证了电炉的正常生产,降低了生产成本。表明我国自主知识产权的高性能无速度传感器矢量控制高压大容量变频调速系统HARSVERT系列产品已经达到国外技术领先企业。     

基于Internet的轧机传动系统的远程故障诊断系统应用研究

介绍了一种基于Internet的轧机传动系统的远程故障诊断系统的具体解决方案。该系统实现了对大量实时数据的动态显示、传输以及防火墙穿越等问题。通过试运行证明该系统具有较好的安全性 ,良好的可移植性、可扩充性和稳定性 ,能对轧机传动系统的运行状态及时作出判断     

电子束熔炼炉过程参数远程监测系统的研发

引入国外电子束熔炼炉远程监测的先进技术,结合设备远程监测的相关知识,提出了电子束熔炼炉过程参数的远程监测系统架构;引入TCP/IP协议的分布式网络远程监测模式,提高了现场监测信号远距离传输的稳定性和方便性;采用C++编程语言,在VS.net编程环境下,集合组态王控件、图像处理和远程监控等相关技术,编程构建了电子束熔炼炉过程参数的远程监测系统。工程实验分析表明,该系统运行稳定可靠。     

基于SAP的分布式远程信息系统开发与应用

介绍了安钢基于SAP的分布式远程信息系统的开发和应用情况.该系统基于SAP套装软件和MES软件系统,采用SAP ABAP、C#、ORACLE等语言开发,实现了采购、库存、销售等业务的全流程管控,利用VPN技术实现了数据通讯和远程异地办公.该系统经过近一年的运行,取得了良好的效果.     

SCADA系统在衡器故障诊断方面的应用研究

通过分析现有衡器系统与SCADA系统的组成及性能对比,进而提出了将SCADA组态系统应用于衡器数据采集系统的设想,并进行了衡器在线监测及故障诊断方面的尝试,有效提高了衡器的可维护性和运行稳定性,降低了衡器设备的故障率。     

Intouch与S7-200结合在生产水系统中的应用

某矿水系统地理位置距离集控中心较为偏远,控制信号、运行状态、电流用能分析一直处于手动状态。根据工业生产的需求设计了该系统,解决了"信息孤岛"问题。系统自投用运行以来,生产管理层通过wonderware的WEB发布功能,能够清楚的了解设备运行状况、生产故障、用能情况、电流大小等问题,实现扁平化管理。     

基于Fix、GE组态软件的高炉远程监测系统

介绍了在现有技术条件下开发的高炉远程监测系统的开发过程和应用状况，系统实现了炼铁厂高炉运行趋势的全面监测，使得在炼铁厂安装本系统的所有终端机上都可以对高炉运行趋势进行监测。     

济钢3#竖炉自动控制系统

为提高济钢竖炉的自动化控制水平，设计开发了3^#竖炉自动控制系统。该系统采用施耐德公司Modicon Quantun系列PLC及以太网通讯技术，并应用Concept2．2编程软件、Monitor Pro V7上位监控软件开发了相应的控制程序和监控画面，实现了对整个竖炉的集中控制。投用两年来，系统运行稳定可靠，满足了工艺技术要求。     

用单片机89C51实现的远程数据采集系统

远程数据采集系统由单片机微控制器、模拟／数字转换器、调制／解调器构成。具有体积小、价格低、维护性好、功耗低等的特点。利用现有的有线和无线通讯网,可方便快捷地建立起一个大范围的远程数据采集系统。     

GPS遥感测绘方法在土地测绘中的应用研究

土地测绘是查明我国土地资源利用状况和后期规划、利用的基础依据,因此,如何更准确的、快速的获得现阶段土地资源利用状况是当前亟待解决的问题。以GPS遥感测绘方法为研究对象,以某地区土地测绘实例为分析目标,着重讲述GPS遥感测绘方法中的CORS技术在土地测绘中的应用。结果表明:该技术有效的提高了测绘精度、降低了成本、提高了测绘效率,在土地测绘中具有广阔的应用前景。     

Estimating Regional Evapotranspiration Using Remote Sensing: Application to Sone Low Level Canal System, India

Remote sensing-derived spectral data have been used in the past to partition net radiation, soil heat, and sensible heat fluxes for estimating latent heat flux as a residual of surface energy balance, and thus regional evapotranspiration. Attempts to provide a simplified procedure for estimating sensible heat flux at a regional scale have not been successful because of the relatively strong dependence of the heat transfer coefficient on the land–atmosphere boundary condition. This paper presents a remote sensing-based procedure to estimate the sensible heat flux incorporating the local meteorological conditions, and in turn to determine the regional evapotranspiration. The model utilizes satellite-derived surface albedo, surface temperature, and leaf area index along with a very few agrometeorological data as inputs. The proposed procedure has been tested on a part of the Western Yamuna Canal system, India, and is found to be computationally simple as well as stable. For a well-watered wheat crop, the average evapotranspiration by the proposed model is estimated to be 2.05?mm?d?1 on January 30, 1996, whereas it is estimated to be 1.89?mm?d?1 using the Penman-Monteith equation, indicating a difference of less than 10%. The model is subjected to sensitivity analysis for uncertainties in the observed wind velocity and the computed leaf area index (by ±20%) to estimate sensible heat flux. Results reveal that the percentage change in mean sensible heat flux for the image is less than 5% in all cases, thus indicating the acceptability of the model against the uncertainties. Further, the model has been applied to three sets of Landsat-TM data covering the Sone Low Level Canal system, India, to demonstrate its usefulness in evaluating water delivery performance.     

高炉遥控喷涂造衬在我国无钟炉顶高炉的首次实践

介绍高炉遥控喷涂造衬在无钟炉项高炉实施的全过程及造衬后的生产实践，证明它是一项短工期空料线修补炉衬、延长高炉寿命行之有效的新技术     

远程集中计量系统在鞍钢的应用

远程集中计量系统2009年在鞍钢股份有限公司计量厂的成功应用,实现了远程数据采集、计量过程远程监控、设备远程控制和智能化协作,达到了节员增效和对计量员集中管理的目的,避免了现场计量的种种弊端和漏洞,加快了物资信息传递速度,规范了计量业务流程,提高了物流速度和管理水平。     

F24无线电遥控器在矿热炉布料控制系统中的运用

12500kVA型矿热炉生产工序中,炉料经过PLC自动控制系统配料后,进入炉顶料仓。为了达到配料、布料自动控制一体化,实践了F24工业用无线电遥控器在炉顶环形布料控制中。     

Aerial Assessment of Ephemeral Gully Erosion from Agricultural Regions in the Pacific Northwest

Soil erosion from agricultural areas continues to be problematic in terms of both financial and environmental measures. Ephemeral gullies contribute to the soil loss both by the volume of sediment eroded from the gullies and because they act as delivery channels for surface erosion. High resolution aerial imagery was used to quantify the amounts and locations of ephemeral gullies in the subbasins of the Potlatch River system. Areal ephemeral gully erosion rates varied from 33.6?mt/km2 (0.15 U.S. t/acre) in the Big Bear Creek Subbasin to 88.4?mt/km2 (0.39 U.S. t/acre) in the Middle Potlatch Creek Subbasin representing 2.3–7.7% of the total surface sediment load. An erosion potential index was proposed to assist resource managers predict gully locations at the watershed scale using readily available remote sensing and geographic information system layers.     

Water Stress Detection Under High Frequency Sprinkler Irrigation with Water Deficit Index

A remote sensing package called the agricultural irrigation imaging system (AgIIS) aboard a linear move irrigation system was developed to simultaneously monitor water status, nitrogen status, and canopy density at one-meter spatial resolution. The present study investigated the relationship between water status detected by AgIIS and soil moisture for the 1999 cotton (Gossypium hirsutum, Delta Pine 90b) season in Maricopa, Ariz. Water status was quantified by the water deficit index (WDI), an expansion of the crop water stress index where the influence of soil temperature is accounted for through a linear mixing model of soil and vegetation temperature. The WDI was best correlated to soil moisture through the FAO 56 water stress coefficient Ks model; stability correction of aerodynamic resistance did not improve correlation. The AgIIS did provide field images of the WDI that might aid irrigation scheduling and increase water use efficiency.     

基于ARM9的智能家居远程视频监控系统的设计

本文在分析国内外智能家居发展现状基础上,采用嵌入式系统开发方法设计实现了基本的嵌入式智能家居远程监控系统。采用S3C2410A处理器和Linux操作系统,建立了嵌入式系统平台和开发环境,系统采用USB摄像头采集视频,开源软件FFMPEG对视频进行编码,并在LINUX下使用JRTPLIB库进行实时流媒体编程传输视频。实验结果表明本文设计的系统实现了智能家居的基本功能,基于ARM的智能家居远程控制系统在功耗、体积、性能和可扩展性上有独特的优势具有广阔的发展空间。