Research Of Digital Storage Oscilloscope Based On VIIS-EM

In recent years,the rapid development of computer technology has led to the industrial reform in the field of computer as core, electronic measurement is one of them. The technology of virtual instrument with the computer technology as the core has been very successful in the field of electronic measurement, more and more developers devotes into the virtual instruments and equipment research and development. The US- led developed countries have more mature products, only the United States national instruments company(NI), currently on the market has more than 500 mature virtual instrument hardware devices, the rapid development of foreign constantly impact domestic electronic instrument market, caused a great deal of capital loss. So it is necessary to develop with our independent intellectual property rights, reliable, precision of virtual instruments and equipment to improve the situation.This topic is developed based on VIIS- EM(Virtual Instrument Integration System for Electronic Measuring, abbreviated as VIIS- EM) System. VIIS- EM is a virtual instrument integrated system for experimental teaching in colleges and universities on electronic measurement, researched and developmented by Jilin University independent. integrates multiple function cards. This topic has designed a dynamic storage oscilloscope based on virtual instrument technology, dynamic storage function has been widely used in practical applications, such as instant or a one-off event capture, storage waveform can be saved for the experimenter after watching at any time. The design has also carried on the corresponding improvement and perfection for the whole system, makes the system acquisition card has a better sampling rate, faster data upload speed, etc.The topic will be divided into hardware and software design of data processing analysis, the system use the " FPGA + MCU" as the central control unit in the hardware part, MCU run address decoder, such as communication, data caching operations by FPGA. Lab VIEW is a graphical language which provides powerful data operation and processing ability, strong software compatibility, and has a humanized human-computer interaction interface, allowing developers to custom options and functional testing. At the end of the development, testing the system and give the whole machine test results.