【作者】 徐玓；

【导师】 高峰；

【作者基本信息】 合肥工业大学 ， 课程与教学理论， 2007， 硕士

【摘要】 虚拟仪器作为现代仪器的一个主要发展方向，在测量和控制方面都有无以伦比的强大功能和灵活性，如今它作为传统仪器的主要替代方式，在科学研究和工业生产中得到广泛的应用。物理实验室是院校教学体系的重要组成部分，在培养学生科学素质、实验技能和创新能力方面具有不可替代的作用。高起点、高标准的建设物理实验室，为教学和科研提供坚实的基础，对提高院校办学水平和教学质量有十分重要的意义。现代科学技术日新月异，这要求物理实验要不断引入新的实验方法，建立新的教学模式。本课题尝试将虚拟仪器技术引入传统的应用物理实验室。利用虚拟仪器技术进行物理实验，将有助于改革传统的实验教学，充分利用网络资源开展网上实验，并可开出符合课程内容的许多新实验，改变长期以来实验技术跟不上新技术的局面，同时培养学生掌握现代科学技术的能力和动手能力，增强了学生的创新能力，提高了学生的综合素质。本文首先分析了将虚拟仪器技术引入物理实验室的意义，接着对虚拟仪器的硬件系统、软件系统及开发平台进行了介绍，然后以NI公司的LabVIEW 8.20 Express为平台，基于USB-6009数据采集卡，开发出一系列虚拟仪器，如：函数信号发生器、双通道虚拟示波器、相位检测器等实验仪器。利用虚拟相位差计对光学纤维中光速的测定实验进行了重新设计。设计了基于虚拟仪器技术的减振实验系统，该实验系统的分析部分充分利用LabVIEW数据处理能力有效地实现了对两自由度振动和动力减振的观测和分析。最后本文对对虚拟仪器技术和物理实验的结合存在的问题进行了总结。更多还原

【Abstract】 As mainstream in modern instruments, virtual instrument has exhibited powerful function and flexibility in measurements and control applications. To date, it has been applied in scientific research and industry as the substitute of traditional instruments.Physical lab is important component of teaching system in colleges and universities and plays the key role in training the students’ scientific characters, experimental skills and creative capabilities. Establishing the high level physical lab builds solid base for teaching and research and is very significant to improve education quality as well. With the ever-changing science and technology, it is necessary for physical experiments to introduce the new experimental methods and build the new teaching models.This project has established the example to introduce the virtual instrument technique into traditional practical physical lab. Using virtual instruments in the physical experiments will help to reform traditional experimental teaching, take full advantage of internet resource for website experiments, and design the new experiments suitable to the courses which can change the situation that the experimental technique cannot catch up the rapidly developing technology. The virtual physical lab can train the students’ ability to master the scientific and technological knowledge and experimental skill, strengthen the students’ creativity and eventually improve the students’ comprehensive quality.The paper begins with the analysis of importance of introducing the virtual instrument in the physical lab and followed by introduction of hardware and software system and development platform of the virtual instrument. Then based on LabVIEW 8.20 Express (NI company) platform and USB-6009 data collection card, a series of virtual instruments such as function signal generator, double-channel virtual oscilloscope, phase detector, etc. have been developed. The experiment of light speed measurement in the optical fibers has been re-designed by using virtual phase difference meter. The damping experiment system based on the virtual instruments has been designed, in which the analysis part efficiently observe and analyses the two freedoms vibration and dynamic damping by using LabVIEW data processing ability. In the final part, the problems in the combination of the virtual instrument technique and physical experiments have been summarized.更多还原