Designing And Realization Of Virtual Digital-storage Oscillograph

The paper introduces the studying of a new kind of oscillograph-virtualdigital-storage oscillograph.Virtual digital-storage oscillograph is the real application of virtual instrument technology. It hangs hardware with software together tightly and realizes every function of common oscillograph, even extends it. Virtual digital-storage oscillograph system includes signal acquisition , signal processing and output display. Except signal acquisition is completed by hardware, the others are realized by software. This paper mainly completes the designing of software.Virtual digital-storage oscillograph we designed consists data acquisition, wave display ,parameter measure, frequency spectrum and wave storage modules. It has some merits which common oscillograph doesn't have, such as saving wave as permanence data, using data at any moment % real-time display and print waves cost low, extending functions based on requirement of application. The main performance of virtual digital-storage oscillograph is that it has two channels of input and the ability of printing and saving. Because it consists digital filter, it has effectively advanced signal-to-noise.LabVlEW is the innovate software of national instruments corps, of America. It is also the most widely used, the most quickly developing and the strongest function graph software. It has short empolder and fast run-rate. So LabVIEW is the best way of design virtual digital-storage oscillograph.