基于云桌面的风电场远程集中监控系统开发

本文介绍了目前风电场远程集中监控中心的架构方式及其优劣势,根据分析,利用现代计算机技术、网络控制、信息安全提出一种基于云桌面的远程集中监控中心的新架构,使目前各个风电场的风力发电机组的监控系统进行统一的调度和管理,以此做为建设无人值守、智慧风电场的基础。     

IEC61850在智能化风电场中的应用

目前国内已有基于IEC61850标准的智能变电站投运,且正在不断探索建成基于IEC61850标准的发电厂智能升压站。在此背景下,探讨了IEC61850标准在智能化风电场中的应用情况,通过对比常规风电场监控系统,介绍了智能化监控系统的网络结构、GOOSE高级应用以及远程集中调度的实现。     

灌溉机井无线数传监控系统总体设计

主要描述了灌溉机井计算机集中监控系统的主要任务、设计特点、设计思想,并对自动监控系统设计进行了总体介绍。该系统采用分布式控制结构,实现对各灌溉机站的远程和就地双重监控和数据采集,并实现对数据的处理、存储等功能。     

基于PPI协议和GPRS网络的供水管网远程监控系统设计

针对某水厂供水管网管道监测点、泵站分散且范围广,无法集中监控等问题,设计了一套基于PPI协议和GPRS网络的供水管网远程监控系统。该系统采用力控组态软件作为中心控制站,通过PPI协议和GPRS数据传输网络与现场可编程逻辑控制器建立无线数据通信链路,实现了远程对供水管网设备的集中监控。现场应用表明:此供水监控系统实时性好、数据传输准确、自动化程度高,提高了生产效率。     

嵌入式Web Server及其在远程网络图像监控系统中的应用

本文介绍了一种基于嵌入式Web Server的远程网络图像监控系统.该系统实现了对数据的实时采集,存储,预处理,压缩,然后将数据通过嵌入式Web Server发送到远程监控终端,实现了实时的远程网络图像监控.以DSP处理芯片为核心,控制CMOS图像Sensor进行实时图像采集,然后对数据进行MPEG压缩,数据访问的控制由嵌入式Web Server进行管理.用户可在Intemet上使用IE等通用的Web浏览器,对监控现场的图像进行观察.     

大型烟道静电除尘远程监控系统

结合现场总线技术和计算机网络技术，烟道静电除尘远程监控系统选用可编程逻辑控制器作为主节点，通过网桥模块，实现与多个现场智能监控设备，上层以太网和控制从节点之间的互联，完成了基于现场总线和以太网的远程监控与管理的功能。本文介绍该系统的设计及实现。     

基于VPN技术的风电场远程监控系统

介绍一种基于VPN技术的风电场远程监控系统,给出了该监控系统的基本架构和组成部分,展示了基于组态软件开发的Web页面监控软件。该远程监控系统对实现风电场现代化管理具有重要的实际意义。     

基于OPC-XML技术的Web远程监控系统

介绍了采用OPC、XML和Web技术的远程监控系统的实现方法。系统由OPC客户组件、Web服务器和Internet网络组成,实现了远程客户通过Web服务器访问现场数据的功能,实现了一种新途径的远程监控系统。     

10-35kV配电网铁磁谐振消谐及远程监视系统

设计了一种新型的10～35kV配电网铁磁谐振消谐及远程监视系统.该系统由现场的智能消谐器、调度中心远程监视计算机和数据传输网络组成,能够实现铁磁谐振自动判断及消谐、铁磁谐振波形自动记录、自动数据远程传送和远程集中监视等功能.本文详细地描述了所提系统的构成、工作原理和实现方法.     

网络远程控制系统关键技术设计

本文通过基于因特网技术的人机交互式远程监控技术.设计了一个网络远程控制和访问系统,辅助网络管理者更加高效地实施网络的监管.该系统是通过数据库技术及SoCket技术实施网络远程的控制和访问,能够有效地远程监控管理网络环境里的路由器与交换机等设备,同时可以远程传输与访问监测分析数据.通过使用该系统,网络监管者能够及时地采取措施,对网络监测结果实施实时地查询与处理,隔离控制网络中异常数据流量,以确保网络运行的安全性.     

Mobile and remote operation for M2M application in upcoming u-manufacturing

This study tried to control and monitor computerized numerical controller (CNC) machines anywhere and anytime for machine (mobile) to machine (M2M) application in wired and wireless environment of upcoming ubiquitous manufacturing systems (u-Manufacturing). With a personal digital assistant (PDA) phone, the machine status and machining data of CNC machines can be monitored in wired and wireless environments, including the environments of IMT2000 and Wireless LAN. Moreover, CNC machines can be controlled anywhere and anytime. The concept of the anywhere-anytime controlling and monitoring of a manufacturing system was implemented for u-Manufacturing in this study. In this concept, the communication between the CNC controller and the PDA phone was successfully performed anywhere and anytime for the real-time monitoring and control of CNC machines. In addition, the interface between the CNC controller and the developed application module was implemented by object linking and embedding for process control (OPC) and shared CNC memory. For communication, the design of a server content module within the target CNC was based on a TCP/IP. Furthermore, the client content module within the PDA phone was designed with the aid of embedded c++ programming for mobile communication. For the interface, the monitoring data, such as the machine status, the machine running state, the name of the numerical control (NC) program, the alarm and the position of the stage axes, were acquired in real time from real machines with the aid of the OPC method and by sharing the CNC memory. The control data, such as the start, hold, emergency stop, reserved start and reserved stop, were also applied to the CNC domain of the real machine. CNC machines can therefore be controlled and monitored in real time, anywhere and anytime. Moreover, prompt notification from CNC machines to mobile phones, including cellular phones and PDA phones, can be automatically realized in emergencies.     

Ubiquitous-based mobile control and monitoring of CNC machines for development of u-machine

This study was an attempt to control and monitor Computerized Numerical Controller (CNC) machines anywhere and anytime for the development of a ubiquitous machine (u-machine). With a Personal Digital Assistant (PDA) phone, the machine status and machining data of CNC machines can be monitored in wired and wireless environments, including the environments of IMT2000 and Wireless LAN. Moreover, CNC machines can be controlled anywhere and anytime. The concept of the anywhere-anytime controlling and monitoring of a manufacturing system was implemented in this study for the purpose of u-manufacturing and u-machines. In this concept, the communication between the CNC controller and the PDA phone was successfully performed anywhere and anytime for the real-time monitoring and control of CNC machines. In addition, the interface between the CNC controller and the developed application module was implemented by Object linking and embedding for Process Control (OPC) and shared CNC memory. For communication, the design of a server contents module within the target CNC was based on a TCP/IP. Furthermore, the client contents module within the PDA phone was designed with the aid of embedded c++ programming for mobile communication. For the interface, the monitoring data, such as the machine status, the machine running state, the name of the Numerical Control (NC) program, the alarm and the position of the stage axes, were acquired in real time from real machines with the aid of the OPC method and by sharing the CNC memory. The control data, such as the start, hold, emergency stop, reserved start and reserved stop, were also applied to the CNC domain of the real machine. CNC machines can therefore be controlled and monitored in real time, anywhere and anytime. Moreover, prompt notification from CNC machines to mobile phones, including cellular phones and PDA phones, can be automatically realized in emergencies.     

基于GPRS网络的远程控制系统中心机软件设计

为解决无有线网覆盖地区无法实现分布式系统的实时监控的问题,设计了基于通用分组无线业务(GPRS)网络的无线拉床远程控制系统,并详细描述了中心机软件的设计过程.该系统硬件部分由数据采集与控制终端、GPRS网络、Internet网络、监控中心机组成;软件部分包括操作系统、控制端软件和中心机软件.控制端可以对拉床进行本地预览...     

基于WSN的低功耗温室环境监测系统设计

针对传统温室环境监测系统布线繁琐、维护困难等问题,基于ZigBee技术搭建无线传感器网络对温室环境信息进行采集,并通过网关将数据上传上位机,在上位机上开发人机交互界面便于实时监测。同时,为了降低WSN节点能耗,延长网络寿命,设计了1种基于RSSI的发射功率自适应机制。实验表明,该机制能够有效降低节点能耗,整个监测系统具有可靠性高、工作稳定等优点,能够满足温室环境监测的需求。     

基于单片机的雨量检测系统设计

针对洪涝灾害问题,开展雨量自动检测系统设计,避免洪水对人们造成生命财产的损失.以STM３２F１０３ 型低功耗单片机为核心,利用 FC-３７ 雨滴传感器、 NRF２４L０１ 无线收发模块以及 OLED 显示屏等实现雨量无线检测.该系统分为主机和从机 ２ 个控制部分,从机主要包括雨量检测模块和 OLED 显示模块,通过无线模块将采集到的数据发送到主机;主机一方面检测自身环境下的雨量信息,另一方面由无线模块接收从机雨量信息并发送给 OLED 显示屏显示出来.结合电路原理图进行硬件设计,测试结果表明,该设计实现了主机和从机对雨量的实时检测功能.     

基于USB接口的无线温湿度监测系统

针对环境温湿度检测的需求,设计了一种点对多点的星型无线温湿度监控网络.以无线通信模块nRF401为基础,配合AT89C2051和数字温湿度传感器SHT11构建了从机,以P89C51RD2BN单片机和USB接口芯片PDIUSBD12构建了主机.对系统的硬件原理及温湿度采集方法进行了介绍,对无线通信协议及USB固件设计方法进行了较详细分析.经上位机软件测试,系统运行稳定,具有较好实用性,可应用于多种场合的无线温湿度监测.     

Compressed sparse time–frequency feature representation via compressive sensing and its applications in fault diagnosis

Feature extraction in time–frequency domain is wildly used in fault diagnosis of rotating machines. However, it needs more time and space to store the time–frequency information, which restricts its practical applications, especially for remote health monitoring. A novel parallel FISTA-like proximal decomposition algorithm was proposed for reconstruction of sparse time–frequency representation (TFR) from the limited noisy observations based on the recently developed compressive sensing. The effectiveness of recovering buried sparse signatures was demonstrated by numerical simulations. The proposed method yielded better results than those obtained by the traditional RecPF method. A novel framework for remote machine health condition monitoring was then developed via the proposed algorithm and the advancements in wireless communication. The effectiveness of the new proposed method for the sparse TFR in detecting bearings and gears defects in rotating machines is further verified using many practical cases. These results illustrate the proposed method can well retain TF signatures without clearly artifacts in the recovered TFR using only very limited measurements.     

基于VB6.0的风井综合参数监控软件设计

介绍煤矿风井综合参数监控软件设计。系统采用无线网络通信技术,其接口电路通过RS-232网络和87C552单片机的串行接口,构成多机通信网络。上位机系统通过VB6.0中的通信控件MSComm实现了以PC主机与多台单片机分站的串行通信,并利用VB6.0编程实现实时数据的采集处理及控制、数据实时显示、报表打印和报警等功能。     

基于 Data Socket互感器无线通信校验技术及数据通信

基于TCP／IP协议和ActiveX互感器无线校验仪中的数据传输,存在程序复杂,开发效率低的问题,该文利用已经对TCP／IP协议进行封装的Data Socket技术来解决这一难题。分析了基于Data Socket下传统单服务器单客户端双机通信模式中,数据错位的原因和解决的方法;提出了双服务器双客户端双机通信,经过现场试验表明,这种通信模式能够更好的满足数据通信要求。     

无线三维调整机控制系统的设计

在现代造船业的现场制造和安装过程中,三维调整机是必不可少的关键设备。设计的无线三维调整机控制系统由1台主控制机及8台调整机组成,主控制机与调整机之间采用1对多的无线通信方式,工作频段433 M,双频点全双工通信模式;同时,为了确保数据在主控制机和三维调整机之间及时、准确可靠的传输,系统采取了建立全双工的通信模式以及采用合理的调制编码方式、数据包结构等措施,从而满足了生产的性能要求。