基于Web的虚拟实验室的设计与实现
发布时间：2019-04-08 13:51
【摘要】： 随着教育信息化的发展,网络教学迅速发展和普及,网络实验教学一直是其中的薄弱环节,因而构建一个突破传统局限的、不受时间和地域限制的网络化虚拟实验室成为迫切需要解决的重要课题。本文提出了一个基于Web的虚拟实验室的设计和实现方案,在详细分析了虚拟实验室实现的方法和关键技术的基础上,提出了使用虚拟仪器技术实现本地端虚拟实验系统,重点解决通过浏览器进行虚拟信号发生器实验的实时操作,为建立开放式实验室做出初步的尝试。 首先,论文将计算机网络技术和虚拟仪器技术有机地结合,在现有硬件和软件基础上开发网络化虚拟实验室系统,为用户提供网络化、开放式的实验环境。在分析虚拟实验室研究现状以及建设中存在的问题基础上,对系统结构进行详细的设计,本系统采用B/S结构,基于VBscript、ASP技术构建系统平台,用户只需具备基本的计算机和网络条件,就可以随时随地访问虚拟实验室进行实验。利用图形化编程语言LabVIEW开发模拟仿真,利用DataSocket技术和SQL Server开发数据处理程序,完成实验数据的传输和保存。引入IP-MAC联合认证预约机制,实现硬件资源分时共享和预约共享,支持学生硬件系统实验、网络化分布式测试系统实验和组态实验。 其次,基于SQL Server数据库建立实验室信息管理系统(LIMS),系统采用动态Web数据库应用系统的三层结构,即由浏览器、Web服务器、数据库服务器组成的B/S三层结构模式,可实现用户管理、资源管理、数据管理、仪器管理以及实验室系统管理,将实验室、服务对象以及外界环境,有机地构成一个整体,确保虚拟实验室系统自动化运行和良性发展。 虚拟Web实验室不仅可以节约在实验教育方面的投入,更重要的是可以完善各院校现有的教学体系,提高院校的教学水平和教学质量,促进学生学习的自主性,培养和提高学生的动手能力和创新能力,它的建成将使高校实验教学的现代化建设迈上一个新的台阶。但作为一种新型的实验类型,尽管不能完全取代传统实验,但是它具有比传统实验更为灵活多样的表现形式,在提高学生素质,促进实验教学技术手段创新发展等方面将发挥重要的作用。
[Abstract]:With the development of educational informatization and the rapid development and popularization of network teaching, network experiment teaching has been one of the weak links among them, so it is necessary to construct a new method to break through the traditional limitations. Networked virtual laboratory, which is not limited by time and region, has become an important issue that needs to be solved urgently. This paper presents the design and implementation of a virtual laboratory based on Web. On the basis of detailed analysis of the methods and key technologies of virtual laboratory implementation, a local virtual laboratory system based on virtual instrument technology is proposed. This paper focuses on the real-time operation of virtual signal generator experiment through browser, and makes a preliminary attempt to establish an open laboratory. Firstly, the paper combines the computer network technology and virtual instrument technology organically, develops the networked virtual laboratory system on the basis of the existing hardware and software, and provides a networked and open experimental environment for users. On the basis of analyzing the present situation of virtual laboratory research and the problems existing in the construction, the structure of the system is designed in detail. The system adopts BSS structure and builds the system platform based on VBscript,ASP technology. Users only need basic computer and network conditions, they can visit the virtual laboratory anytime and anywhere to carry out experiments. The simulation is developed by using graphical programming language LabVIEW, and the data processing program is developed by using DataSocket and SQL Server to complete the transmission and storage of the experimental data. The joint authentication reservation mechanism of IP-MAC is introduced to realize the time-sharing and reservation sharing of hardware resources, which can support the experiment of student hardware system, the experiment of networked distributed test system and the experiment of configuration. Secondly, based on the SQL Server database, the laboratory information management system (LIMS), system adopts the three-tier structure of dynamic Web database application system, which is composed of browser, Web server and database server, and the three-tier structure mode is composed of the browser, the Web server and the database server. Can realize the user management, the resource management, the data management, the instrument management and the laboratory system management, will the laboratory, the service object as well as the outside environment, organically forms a whole, To ensure the automation and development of virtual laboratory system. Virtual Web laboratory can not only save the investment in experimental education, but also improve the existing teaching system in colleges and universities, improve the teaching level and teaching quality of colleges and universities, and promote students' autonomy in learning. To cultivate and improve students' practical ability and innovative ability, its completion will make the modernization of experimental teaching in colleges and universities step to a new level. However, as a new type of experiment, although it can not completely replace the traditional experiment, it has more flexible and diverse forms of expression than the traditional experiment, and it is improving the quality of students. It will play an important role in promoting the innovation and development of experimental teaching techniques.
【学位授予单位】：重庆大学
【学位级别】：硕士
【学位授予年份】：2007
【分类号】：TP391.9
本文编号：2454630
[Abstract]:With the development of educational informatization and the rapid development and popularization of network teaching, network experiment teaching has been one of the weak links among them, so it is necessary to construct a new method to break through the traditional limitations. Networked virtual laboratory, which is not limited by time and region, has become an important issue that needs to be solved urgently. This paper presents the design and implementation of a virtual laboratory based on Web. On the basis of detailed analysis of the methods and key technologies of virtual laboratory implementation, a local virtual laboratory system based on virtual instrument technology is proposed. This paper focuses on the real-time operation of virtual signal generator experiment through browser, and makes a preliminary attempt to establish an open laboratory. Firstly, the paper combines the computer network technology and virtual instrument technology organically, develops the networked virtual laboratory system on the basis of the existing hardware and software, and provides a networked and open experimental environment for users. On the basis of analyzing the present situation of virtual laboratory research and the problems existing in the construction, the structure of the system is designed in detail. The system adopts BSS structure and builds the system platform based on VBscript,ASP technology. Users only need basic computer and network conditions, they can visit the virtual laboratory anytime and anywhere to carry out experiments. The simulation is developed by using graphical programming language LabVIEW, and the data processing program is developed by using DataSocket and SQL Server to complete the transmission and storage of the experimental data. The joint authentication reservation mechanism of IP-MAC is introduced to realize the time-sharing and reservation sharing of hardware resources, which can support the experiment of student hardware system, the experiment of networked distributed test system and the experiment of configuration. Secondly, based on the SQL Server database, the laboratory information management system (LIMS), system adopts the three-tier structure of dynamic Web database application system, which is composed of browser, Web server and database server, and the three-tier structure mode is composed of the browser, the Web server and the database server. Can realize the user management, the resource management, the data management, the instrument management and the laboratory system management, will the laboratory, the service object as well as the outside environment, organically forms a whole, To ensure the automation and development of virtual laboratory system. Virtual Web laboratory can not only save the investment in experimental education, but also improve the existing teaching system in colleges and universities, improve the teaching level and teaching quality of colleges and universities, and promote students' autonomy in learning. To cultivate and improve students' practical ability and innovative ability, its completion will make the modernization of experimental teaching in colleges and universities step to a new level. However, as a new type of experiment, although it can not completely replace the traditional experiment, it has more flexible and diverse forms of expression than the traditional experiment, and it is improving the quality of students. It will play an important role in promoting the innovation and development of experimental teaching techniques.
【学位授予单位】：重庆大学
【学位级别】：硕士
【学位授予年份】：2007
【分类号】：TP391.9
【引证文献】
相关期刊论文 前3条
1 代树红;董玉芬;;虚拟光弹性力学实验研究[J];辽宁工程技术大学学报(自然科学版);2011年04期
2 齐虹;周文滨;陈冲;余金虎;;利用LabVIEW实现的虚拟网络实验室及其虚拟实验[J];福州大学学报(自然科学版);2010年02期
3 崔秀华;;基于LabVIEW的远程虚拟实验室的实现研究[J];现代科学仪器;2012年04期
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