基于B/S的远程虚拟示波器的设计与应用  

Design and Application of Remote Virtual Oscilloscope Based on B/S

作　　者：王勤[1] 黄云霞[1] 任维政[1] 

机构地区：[1]北京邮电大学电子工程学院,北京100876

出　　处：《自动化与仪表》2014年第8期44-47,共4页Automation & Instrumentation

摘　　要：为了克服示波器成本较高、携带不便、应用环境受限等问题,文章提出了一种基于B/S架构,并融合了Flex技术与FPGA技术的能够随时随地远程测量的虚拟示波器。通过FPGA实现测量端的数据采集、处理,使用Flex实现虚拟仪器的操作界面和数据显示,通过J2EE服务器将虚拟仪器部分和硬件数据部分相集成。该虚拟示波器达到了100 MHz带宽、2个测试通道、32 Mpts的存储器深度、1 GSa/s的采样速率、波形失真度小于5%。操作界面和数据结果显示,方式与实物示波器完全一致,直观方便,因此将虚拟仪器应用在远程实验系统中,极大地提高了学生实验效率。In order to overcome the issues of high cost,inconvenient carrying and application environment constraints of oscilloscope,by combining the Flex technology and FPGA technology,the research has designed a virtual oscilloscope,which was based on B/S architecture and can be measured remotely anytime and anywhere. The data acquisi- tion and processing of the measuring end was realized by FPGA,the virtual oscilloscope interface and data display was realized by Flex,and virtual instrument parts and hardware parts of data were integrated by the J2EE server. The virtual oscilloscope reached 100 MHz bandwidth,2 test channels,memory depth of 32Mpts and the sampling rate of 1GSa/s,and the waveform distortion was less than 5%. The operation interface and data of results display mode were exactly the same as the real oscilloscope,intuitive and convenient,Therefore,it can greatly improves the efficiency of student experiments that the virtual instrument was applied in remote experimental system.

关 键 词：远程测量 虚拟示波器 B S FLEX FPGA 

分 类 号：TH702[机械工程—仪器科学与技术]