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1、常州信息职业技术学院电子与电气工程学院 毕业设计论文毕业设计论文基于LabVIEW的实验室远程监控系统设计与实现目录摘要Abstract第1章 绪论11.1 课题的来源和意义11.2 国内外研究现状及展望11.3 课题主要研究内容和关键技术31.3.1 课题主要研究内容31.3.2 关键技术研究3第2章 系统总体方案设计42.1 系统需求分析42.2 系统网络架构42.3 系统功能模块划分6第3章 可视化远程监控采集系统设计73.1 系统硬件构成73.2 传感器的选型8第4章 基于LabVIEW的监控系统设计124.1 系统模块划分124.2 用户认证模块设计124.3 用户界面设计144.4
2、 程序结构设计164.5 数据采集模块设计174.5.1模拟信号采集与显示模块设计184.5.2 开关信号采集与显示模块设计184.5.3 空调与照明开关输出模块设计194.5.4 称重实验模块设计194.5.5 涡流实验模块设计214.5.6 转速测控实验模块设计224.5.7 振动实验模块设计244.6 图像采集及压缩254.6.1 图像采集254.6.2 图像压缩与远程传输274.7 系统远程发布的实现314.7.1 基于DataSocket的远程通信方式314.7.2 远程Web访问324.7.3 可视化监控系统远程发布实现33第5章 系统实现与运行38第6章 结束语43答谢辞参献基于
3、LabVIEW的实验室远程监控系统设计与实现摘要虚拟仪器本质上是以软件取代部分硬件功能，充分利用计算机的软硬件资源，来完成各种测试、测量和自动化应用的集成系统。远程虚拟仪器是虚拟仪器在网络领域的拓展，它能从与Internet相连的远端获得动态数据或将控制信号传送到远端，使在本地PC机上监控远端成为可能，通过远程虚拟仪器技术使信号采集、传输和处理实现了一体化。如何实现基于Web的远程可视化测控并将之应用于远程实验教学正是本文讨论的重点。本文详细介绍了一个远程传感器实验室监控系统的整体方案和软硬件系统设计。针对传感器实验室的教学特点，本系统主要分为两部分：1.实验室环境的可视化远程监控，包括环境温
4、度、湿度量实时显示和消防、红外、门状态等报警器状态的监控，照明与空调开关控制，以及实验室图像的远程实时显示；2.远程可视化实验项目开发，包括：自动称重系统仿真实验、转子台转速测控等多个传感器相关实验。本系统软件部分采用美国国家仪器（NI）公司的LabVIEW图形化编辑语言开发完成，重点解决了基于Datasocket技术的数据远程传输、图像压缩传输、远程用户数据库管理等技术问题。硬件部分则使用NI公司的PCI-6251数据采集卡，实现对实验室现场实时数据的采集和处理。目前，该网络虚拟实验室系统已能在校园网内运行，实现了基本功能，为师生提供了一个基于网络的实验教学、技术交流以及共同学习研究的平台，
5、从而使实验室中的硬件仪器得以共享。随着其功能的进一步完善，它必将在今后的远程实验教学中发挥更大的作用。同时系统软件采用生产者-消费者的结构设计实现了多线程运行，基于队列的状态机和事件结构也保证了用户需求的实时响应，实验项目的模块化设计保证了代码的可重用性和系统功能的可扩展性强，因此在远程实验教学方面具有广阔的应用前景和推广价值。同时对工业现场的可视化远程监控也具有一定的借鉴作用。关键词： 虚拟仪器；远程监控；远程实验；可视化；LabVIEWAbstractThe Virtual Instrument is essentially replacing some of the hardware m
6、odules by software. It is an integrated system which makes full use of computer hardware and software resource to complete various tests, measurements and automatic applications. The Remote Virtual Instruments is the virtual instrument expansion in the field of network. It enables dynamic data and c
7、ontrol signals transmission from a remote terminal which connects to the Internet and make it possible to monitor a remote terminal from a local PC. Based on Remote virtual instrument technology, signal acquisition, transmission and processing can be integrated to one system. How to implement a remo
8、te Web-based, visualized monitoring and controlling system and how to apply it to remote experimental teaching are the major points of this paper.This paper describes in details about the overall scheme, hardware and software system design of a remote sensor monitoring system. According to the featu
9、res of the teaching sensor laboratory, the system is divided into two parts: 1. Laboratory visualized monitoring for remote environment, including the real-time display of temperature and humidity, monitoring the status of the alarm for fire, infrared, door status, the controlling the switches of li
10、ghts and air conditioners and the real-time display for remote laboratory images. 2. Remote visualized experimental project development, including: automatic weighing system simulation, multi sensors experiment for the rotor speed measurement and control.The software of system uses the graphical edi
11、ting language provided by National Instruments (NI) s LabVIEW. Based on the Datasocket technology, the focus of this system is to solve the remote data transmission, image compression and transmission, remote user database management and other technical issues. To achieve the goal, a universal seria
12、l port multi-function data acquisition card is designed from the point of hardware. The hardware of system uses PCI-6251 DAQ card by National Instruments to achieve real-time data acquisition and processing on the laboratory site. Currently, the Virtual Laboratory system has been able to operate wit
13、hin the campus network. The basic functions are achieved to provide the teachers and students a web-based teaching, research and technological exchanges and joint learning platform so that the laboratory hardware devices can be shared. With the further improvement of its function, it will play a gre
14、ater role in the remote experimental teaching area in the future.The software of the system adopts a producer-consumer design structure and implements a multi-threads run mechanism. The run state machine based on queue and event structure ensures the user real-time response requirements. The modular
15、 design of the testing project also ensures the code reusability and makes the system very extendable. Therefore, this system has broad prospects and promotional value in the remote experiment teaching. Meanwhile, this system also has some reference for the visual remote monitoring at industrial fields.Keywords: Virtual Instrument； Remote Monitoring； Remote Experiment；Visualization；LabVIEW常州信息职业技术学院电子与电气工程学院 毕业设计论文第1章 绪论1.1 课题的来源和意义本课题来源于常州信息职业技术学院国家示范院校建设项目传感器实验室改造及网络课程建设项目。其目的是基于虚拟仪器技术以及Internet技术构建实验室远程监控系统。虚拟仪器技术的出现，尤其是其基于Web的远程网络技术的发展为解决上述问题，提供了新的途径。所谓虚拟仪器
