The oscilloscope is one of the most commonly used measuring instruments in the electronic measurement industry. It can input electrical signals through the oscilloscope and output them into visible images, allowing people to study the changing process of various electrical phenomena or signal changes more intuitively. process. With the development of science and technology, traditional measurement methods are no longer applicable in many occasions, and many instruments have the slogan of "intelligence". How to realize intelligence, so "virtual instruments" came into being. Compared with oscilloscopes, the generation of virtual oscilloscopes, that is, intelligent digital oscilloscopes, is undoubtedly a major breakthrough in the development of oscilloscopes, and significant changes have taken place in the functions and roles of oscilloscopes. Regarding the virtual oscilloscope, it can be understood in this way that the virtual oscilloscope is a software and hardware system that uses high-performance hardware modules and efficient and flexible software to realize the functions of ordinary instruments and many extended functions. Components of a virtual oscilloscope It mainly includes three parts: signal acquisition and control, data analysis and processing, and display of measurement results. Signal acquisition and control is a hardware platform composed of computer and instrument hardware to realize the acquisition, measurement, conversion and control of signals; data analysis and processing are reflected in the virtual oscilloscope making full use of the computer's storage and operation functions, and realizing the control of the signal through software. Analysis and processing of input data signals; the display of measurement results of virtual oscilloscope is to use computer resources, such as display, memory, etc., to express and output measurement results in various ways, and also to use computer for data transmission and utilization. As a complete software and hardware system, virtual oscilloscope is cheaper than traditional oscilloscope and has unique advantages such as waveform triggering, storage, display, measurement, waveform data analysis and processing, etc. The characteristics of virtual oscilloscope are: what? mainly reflects in: (1) The widely used USB interface is adopted to make the interface between the virtual instrument and the computer more convenient and the communication speed is higher; (2) Use high-speed analog-to-digital conversion chip for high-speed sampling; (3) Use high-performance single-chip microcomputer for control, use high-speed large-capacity memory to save sampling data in real time, and improve the performance of the instrument; (4) Use Labview language to design the application program of the upper computer, which can realize the waveform display, as well as the analysis and processing of the data. During the development of virtual oscilloscope, the software reality is an important part of the whole project and one of the key technologies. Let's analyze the software of the virtual oscilloscope, which includes: (1) Software functions - link with hardware, control equipment works normally, signal display and storage, signal analysis and processing; (2) Software composition - the three major parts include the hardware driver part, the virtual panel part and the signal post-processing part; (3) Software structure - integrates the user interface into a whole, and realizes various functions of the oscilloscope through the relevant controls on the interface. The following figure is a software structure: Technical advantages high performance Strong scalability NI's hardware and software tools free engineers and scientists from being locked into inherent, closed technologies. Thanks to the flexibility of NI software, simply updating your computer or measurement hardware can improve your entire existing system with minimal hardware investment and little or no software upgrades. While taking advantage of the latest technologies, you can integrate them into existing measurement equipment, ultimately accelerating time-to-market at less cost. Efficient development At both driver and application levels, NI's efficient software architecture can be combined with the latest technologies in computers, instrumentation, and communications. National Instruments designed this software architecture to be user-friendly, while also providing high flexibility and powerful features that allow you to easily configure, create, publish, maintain, and modify high-performance, low-cost measurement and control solutions. plan. integrated Virtual instrument technology is essentially an integrated software and hardware concept. As products continue to become more functionally complex, engineers often need to integrate multiple measurement devices to meet complete testing needs, and connecting and integrating these disparate devices is always time-consuming. NI's virtual instrument software platform provides standard interfaces for all I/O devices, helping users easily integrate multiple measurement devices into a system, reducing task complexity. good compatibility With all the measurement software and hardware tools on the market today, it takes a lot of time for engineers to learn how to use them, so taking the time to choose the right tool is critical. NI provides you with a complete range of test and measurement hardware products, from data acquisition, signal conditioning, sound and vibration measurement, vision, motion, instrument control, distributed I/O to industrial communications such as CAN interfaces. Industry Standard Measurement and automation systems created according to industry standards save you development and maintenance costs, both now and in the future. NI understands this is critical to users, and we are actively participating in and promoting the development of open industry standards. Technical Improvement NI is committed to providing state-of-the-art technology while maintaining system compatibility with previous versions, so engineers and scientists can use the same solution for an extended period of time. To achieve this long-term solution, NI provides a software framework that includes standard application programming interfaces (APIs) to ensure compatibility and scalability as computers, networks, and operating systems continue to improve.
Features
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