Virtual instrument development or will face polarization

For 20 years, no matter whether it is a novice beginner or an experienced programmer, Virtual Instrument is popular among users of measurement and control in various engineering applications and industries, thanks to its intuitiveness. Graphical programming language. The virtual instrument's graphical data flow language and block diagram can naturally display the data flow, while the visualized user interface visually displays the data, allowing us to easily view, modify, or control input.

In addition, compared to traditional instruments, the biggest feature of virtual instruments is that they are based on computer-based software analysis systems, in addition to hardware systems for data acquisition and display. Its different functional modules allow the user to freely define the instrument and can be combined into a variety of instruments, which allows it to have a breakthrough in the specific use. Because of the computer-based technology, virtual instruments have the characteristics of data sharing, flexible use, portability, scalability, and seamless integration, and have become a new generation of leading products in the field of international automation testing. Even within the industry, there has been a faint call for over or even replacing traditional instruments. However, according to an analysis by China's monitoring and control network experts, although the current virtual instrument is extremely hot, its instability in core functions will become a major constraint to its large-scale development. Even in different industries and fields, there will be a polarized market pattern.

We know that traditional instruments are basically closed, and their internal systems and procedures are set in advance for the manufacturer. Users only need to follow the flow to perform specific operations during actual use. In order to ensure the accuracy of the instrument, it also needs to be calibrated and tested on a regular basis to meet the requirements of use. However, the hardware part of the virtual instrument is only responsible for data acquisition and input and output functions. The information extraction and signal processing are implemented by software. Before leaving the factory, the virtual instrument manufacturer will use the calibration of the corresponding organization to write the calibration data to the device. in. Due to the relatively open operating environment of the virtual instrument, if the user loses the calibration data or changes the program due to human or non-human factors such as computer viruses, the detection results may be inaccurate. From this point of view, compared with traditional instruments, virtual instruments become a sword based on the characteristics of computer open networks, and their advantages and disadvantages coexist.

These characteristics of virtual instrument technology determine its development trend in different fields. In civil use, because of its convenience, customization and small size, combined with the resource sharing of computers, it will gain more and more market share. With the continuous upgrading of the computer security system, the instability of the test results caused by its own multiple operations and open computer environment will be alleviated. And compared to ordinary users, no one product is perfect, users pay more attention to cost-effective issues. Large-scale traditional detection equipment is expensive, bulky, and difficult to carry, making virtual instruments more space for development. However, in military and aerospace and other specialized fields where test and measurement results are highly demanding in terms of accuracy and stability, the virtual instruments will be countered by even greater amounts of conservative forces. The dominance of traditional instruments in this field is hard to be shaken in the short term. Virtual instruments and equipment will find more opportunities for development in local applications or special applications.

Looking at the international and domestic virtual instrument industry, although some well-known companies have now strengthened their efforts in product R&D and innovation, and the networked and intelligent development path is also a necessary path for the instrumentation industry, it is limited to virtual instrument technology. The development of the computer security system itself and the computer security system it relies on is not yet complete. The virtual instrument wants to replace the traditional instruments, occupies a dominant position in more advanced industries and fields, even eliminates traditional products, and forms a comprehensive upgrade of the world instrumentation industry. A long way to go. In this process, besides constantly exerting its own advantages, based on the sharing and seamless connection of computer systems, and developing more products, virtual instrument technology and its production companies must also pay attention to the internal optimization of the system, reduce the number of operations, and improve The safety factor, with a view to continuously enhancing the safety and stability of the test results, lays the foundation for expanding the scope of application and opening up the globalized industry-wide application situation.