基于虚拟远程实验室的数字电子技术实验设计  

Design of experiment in digital electronic technique based on virtual remote laboratory

作　　者：孙昕[1] 朱善安[1] 

机构地区：[1]浙江大学电气工程学院,浙江杭州310027

出　　处：《机电工程》2012年第6期721-724,共4页Journal of Mechanical & Electrical Engineering

基　　金：国家科技支撑计划重点资助项目(2008BAH29B00)

摘　　要：针对传统的电工电子类实验室存在的投入高,维护费用高,易受时间、地点限制等问题,设计了虚拟远程实验室(包括浏览器端、管理端和计算端),各部分通过可拓展标记语言XML通信,浏览器端的虚拟场景操作平台采用Adobe Flex技术搭建,管理端的实验调度模块采用成熟的网络框架Python Twisted开发。用户通过虚拟场景操作平台搭建好电路并仿真时,向计算端发送虚拟场景数据,计算端接收数据后,建立Modelica模型并利用仿真环境OpenModelica进行求解,最后将求解的仿真结果反馈给用户。以数字电子技术课程中的半加器实验展示了虚拟远程实验的具体步骤和仿真结果。实验结果表明,虚拟远程实验室以学习者为中心,具有良好的交互性和拓展性,操作简便,性能可靠,有效地弥补了传统电工电子类实验室的不足。Aiming at solving the problem of high investment, high maintenance fee, time and location restriction that exists in the traditional electrical engineering laboratory, a virtual remote laboratory which includes client side, multi-serve and computing cluster was designed. The communication between the three parts is based on extensible makeup language XML. The virtual scene operating platform was constructed based on Adobe Flex technology, the computing serve was developed based on the well-established network framework Python Twisted. When a virtual circuit is established,virtual scene data was sent to the computing serve. Based on the virtual scene data, a Modelica model was generated and computed by OpenModelica compiler and then sent back to client side. A half adder experiment in digital electronic technique course was showed to demonstrate the operating procedure and the simulation results. The results indicate that virtual remote laboratory is user-centered, reliable, easy to operate and boasts good interactivity and extensibility, which can effectively make up the deficiencies of traditional electrical engineering laboratory.

关 键 词：虚拟实验室 远程实验室 数字电子技术 MODELICA FLEX 

分 类 号：TP393[自动化与计算机技术—计算机应用技术] TM13[自动化与计算机技术—计算机科学与技术]