Basic status of the hottest automatic instrument a

Basic status of automatic instruments and control systems

Introduction: the development of automatic instruments this year focuses on the application of instruments. The change of this development trend is very natural. After nearly 10 years of development, digital and intelligent instruments and systems have accumulated some problems in application, and many innovative functions of intelligent instrument design have not been fully applied. The main problems are as follows:

(1) information confidentiality and security of digital instruments and systems

(2) reliability of microprograms and software

(3) confidentiality, security and reliability of communication

(4) intelligent instruments can interact with the control system during operation and how to interact

(5) intelligent instruments provide far more information than analog instruments and how to make full use of these information. After recycling, they cannot be used together again

(6) many Kobe Steel, Japan's third largest steel company, have been exposed to interoperability problems of intelligent instruments suspected of falsifying product factory data

(7) fault diagnosis of instruments and systems and interoperability of fault diagnosis information

in the 21st century, the rapid development of China's manufacturing industry has driven the demand for automatic instruments and control systems. The advanced level of automatic instruments and control systems used in China's new large-scale projects has been at the world leading level. At present, the traditional manufacturing industry has passed the glorious period in developed countries, and the supporting automatic instruments naturally grow slowly. The hot spot of automation instrument development is the price problem in emerging markets, which attacks instrument manufacturers from two aspects: first, users in emerging markets are highly sensitive to product prices; Second, very cheap substitutes can often be found there, which makes it difficult for multinational enterprises to spend a lot of money on developing new instruments

although the development of fieldbus technology, an important field of Automation Instrument Technology Development in recent 10 years, has made remarkable achievements, it is still in the stage of replacing analog transmission lines in terms of application. In fact, fieldbus is not only the change of signal system, but also provides the basis for the informatization of control technology. The user's demand for the transformation of system bottom informatization (control, diagnosis, management) is the original driving force for the promotion of fieldbus technology. In recent years, the potential of Fieldbus in equipment asset management, prediction, diagnosis and stable operation has begun to be tapped, showing a momentum of great development prospects

however, networking control and distributed intelligent technology based on fieldbus technology have not made significant breakthroughs in theory or practice so far: the speed bottleneck of fieldbus is that it is sometimes not as good as traditional instruments in terms of complex control and rapid response: the fieldbus dispute that has lasted for many years has not won among manufacturers, and users generally feel bored, It has greatly consumed the resources for the development of enterprises

internationally, several important windows of customers reflect the constant trend of automation instrument products: international instrument exhibitions represented by isaexpo and miconix, and awards represented by readers choiceaward. Judging from the readers' choice awards such as methyl methacrylate grafts in the past three years, the winning products have not changed much. The development of automatic instruments this year focuses on the application of instruments

the change of this development trend is very natural. After nearly 10 years of development, digital and intelligent instruments and systems have accumulated some problems in application, and many innovative functions of intelligent instrument design have not been fully applied. The main problems are as follows

(1) information confidentiality and security of digital instruments and systems

(2) reliability of microprograms and software

(3) confidentiality, security and reliability of communication

(4) intelligent instruments can interact with the control system during operation and how to interact

(5) intelligent instruments provide far more information than analog instruments and how to make full use of this information

(6) interoperability of many intelligent instruments

(7) fault diagnosis of instruments and systems and interoperability of fault diagnosis information

the above problems are caused by digitalization and networking. It is not that the existing technology cannot solve these problems, but that there are too many alternative solutions, and the unified solution is the most effective. How to unify is currently being studied