虚拟仪器技术在微弱信号检测教学中的应用探讨  

Application of Virtual Instrument Technology in the Teaching of Weak Signal Detection

作　　者：杨晖[1,2] 于向飞[1] 杨海马[1] 于小强[1] 李军[1] 宋磊磊[1] 

机构地区：[1]上海理工大学光电信息与计算机工程学院 [2]上海理工大学现代光学重点实验室,上海市200093

出　　处：《曲阜师范大学学报（自然科学版）》2013年第4期122-124,共3页Journal of Qufu Normal University(Natural Science)

基　　金：国家自然科学基金(61007002)

摘　　要：针对目前《微弱信号检测》课程存在的实验资源有限和设备维护要求高的问题,提出了采用虚拟仪器技术与实验相结合的教学模式.该文以微弱信号检测技术中最重要的锁相放大器为例,利用LabVIEW软件设计了一种虚拟锁相放大器,通过对虚拟锁相放大器的学习,一方面可以让学生更好地掌握锁相放大器的结构和原理;另一方面熟悉虚拟仪器编程技术,了解虚拟锁相放大器的构建过程,通过自己动手开发虚拟锁相放大器,为下一步实验做好准备.To solve the problem of limited experimental resources and high equipment maintenance require- ments in the weak signal detection course, a combination of virtual instrument technology and experimental teach- ing mode was proposed. In this paper taking the lock-in amplifier which is the most important technology of the weak signal detection as an example, a virtual lock-in amplifier was developed using LabVIEW. With the virtual lock-in amplifier, students can master the structure and principle of the lock-in amplifier, furthermore they can be familiar with virtual instrument programming techniques and virtual lock-in amplifier building process by them- selves to develop a virtual lock-in amplifier and prepare for the next experiment.

关 键 词：微弱信号检测 虚拟仪器 锁相放大器 

分 类 号：TN911.23[电子电信—通信与信息系统]