火电厂贮煤筒仓安全监测系统的研究与设计

文中介绍了某3×135MW煤矸石综合利用电厂贮煤筒仓安全监测系统。系统采用研华IPO610工控机为上位机,通过传感器对筒仓内贮煤温度、一氧化碳、可燃气体、烟雾及煤位等参数进行在线监测,软件系统采用力控ForceControl2.61组态软件制作人机界面。文中对系统的功能、硬件配置和软件编写进行了讨论,分析了各I/O模块的功能,并给出了流程框图。该系统具有较好的实用性和稳定性,并已成功的运用在实际生产中,对防止贮煤筒仓事故、实现输煤系统安全运行有一定参考意义。     

基于CAN总线的DNC远程诊断及监控系统

将CAN总线网络与Ethernet(车间以太网)、Internet结合,本文提出了基于CAN总线的DNC远程诊断及监控系统,研究了该系统的体系结构、各部分的功能及相互关系,并探讨了该系统实现过程中的一些关键技术。     

WebGIS在工程机械远程监控系统中的应用研究

提出了地理信息系统GIS技术应用的四个阶段,在第四阶段(集成化阶段)的GIS通过Web服务技术实现了GIS的互操作,使之能够与其他应用系统有效集成。然后通过实例分析并研究了基于Web服务的WebGIS在工程机械远程监控系统中的应用,以及其和企业现有业务系统集成的方法。     

柔性制造过程的状态监控

本文针对某厂加工车间的实际需求,通过对被监控对象的详细分析,采用数据采集模块、RS485总线和组态软件来完成数据的采集与处理,基于集成的观念,设计并建造了一个柔性制造过程的状态监控系统,该系统实现了模块间、系统间以及信息间的集成。     

Behavior, Analysis, and Design of an Instrumented Link Slab Bridge

Presented in this paper are the results of a research project on the monitoring and assessment of the first link slab jointless bridge in the state of North Carolina. The structure was instrumented with a remote data acquisition system and monitored for over a year. In addition, a controlled load test was conducted in an effort to determine the demand on the link slab under known loads. A procedure for the limit-states design of a link slab system is also presented. Results indicate that while the crack size in the link slab exceeded the design level, the link slab fulfilled its function. Furthermore, the rotational demand from the large controlled loads as well as the traffic loads was similar in magnitude to the thermal induced rotations due to the difference in temperature between the top and bottom of the bridge.     

Identification of Parametric Variations of Structures Based on Least Squares Estimation and Adaptive Tracking Technique

An important objective of health monitoring systems for civil infrastructures is to identify the state of the structure and to detect the damage when it occurs. System identification and damage detection, based on measured vibration data, have received considerable attention recently. Frequently, the damage of a structure may be reflected by a change of some parameters in structural elements, such as a degradation of the stiffness. Hence it is important to develop data analysis techniques that are capable of detecting the parametric changes of structural elements during a severe event, such as the earthquake. In this paper, we propose a new adaptive tracking technique, based on the least-squares estimation approach, to identify the time-varying structural parameters. In particular, the new technique proposed is capable of tracking the abrupt changes of system parameters from which the event and the severity of the structural damage may be detected. The proposed technique is applied to linear structures, including the Phase I ASCE structural health monitoring benchmark building, and a nonlinear elastic structure to demonstrate its performance and advantages. Simulation results demonstrate that the proposed technique is capable of tracking the parametric change of structures due to damages.     

田湾核电站2004年(运行前)的环境监测

田湾核电站环境监测系统于2003年底前建成,为了检验田湾核电站环境监测的仪器设备、规程文件、质控措施和人员的技术水平是否满足运行时的要求,扩大和改善运行前的环境本底数据,并通过实践的经验反馈发现存在的问题,提出改进方案和措施,田湾核电站在2004年对核电站周围进行了（运行前）的环境监测.本文主要介绍2004年环境监测的方案、质量保证和主要监测结果及其与2000年4月～2002年3月二年的本底调查结果的比较.2004年监测结果表明,除海水中137Cs活度浓度与本底调查有明显差异外,其余监测结果与本底调查结果基本吻合.     

基于RSView的电泳柔性自动生产线实时监控系统

根据铝型材氧化着色电泳自动生产线的布局结构及其PLC控制网络系统的特点，应用组态软件RSView32及嵌入式VBA开发该生产线的自动监控系统。介绍了监控工作站与PLC站点的数据通信接口及实现方法。应用基于事件驱动的动态调度方法实现行车的动态调度与决策，并给出了主要程序模块的工作流程图。     

基于流媒体技术的家用数字图像监控系统

本文提出了一种经济实用的基于流媒体技术的家用数字图像监控报警系统的实现方案，该系统以廉价的USB摄像头为图像采集设备，利用作为家庭信息平台中枢的PC机强大的处理能力，采用Windows Media技术对图像进行实时压缩编码和流化，当异常发生时，以流媒体形式对报警图像进行存储和传输，使得用户能远程监控家中的各种警报情况。     

基于Web的远程集群监控系统的设计与实现

集群系统的商品化部件构成特点在具有高性价比优点的同时,也带来了可用性和可管理性差的缺点,因此集群系统的监控就变得特别重要。该文结合国家高性能计算中心(西安)的Linux集群系统给出了一种基于Web的集群监控系统的体系结构框架以及实现策略,详细介绍了数据采集、信息收集和存储以及状态的可视化各个模块的具体实现,基于WEB的实现策略使该系统具有平台无关性和监控远程性的优点。