Development trend of new generation control system

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The development trend of the new generation control system under the condition of "industrial interconnection"

with the rapid development of industrial interconnection, our production data can be stored on a large scale, realize big data that was impossible before, and use the unprecedented computing power of cloud computing platform to analyze, mine and optimize production efficiency. Industry 4.0 has made field devices, machines and factories more intelligent, so we can talk about smart devices, smart machines and smart factories

however, we will find that neither industrial interconnection nor industrial 4.0 has made any further technological changes to plc/dcs, the brain of industrial control systems. This kind of phenomenon that two ends are heavy and the middle is light is like a toll station on the highway. The widening of the highway alone is far from achieving greater vehicle throughput. The bottleneck of the road is the toll stations standing on the highway. Therefore, more toll windows need to be set for toll stations to realize the reform of electronic charging and other measures to adapt to the high-speed and rapid growth of traffic flow. The same is true in the field of industrial control system. The core PLC equipment of control cannot be flexibly expanded, which will undoubtedly greatly weaken the flexibility and scalability of industrial control system

with the increasing demand for industrial intelligence, the third generation control system represented by traditional plc/dcs can no longer meet the demand for industrial intelligence. At present, the industry is exploring the technical system for industrial interconnection, industry 4.0, etc., focusing on plc/dcs, so as to realize the fourth generation control technology

the fourth generation control technology must be the combination of software definition and virtualization technology, so as to meet the control needs of industrial interconnection and intelligent industry. Software defined plc/dcs realizes easy scalability and system modularity by allowing users to replace or add components without affecting other parts of the system. The software defines that PLC is designed as an open platform, allowing users to choose preferred components and solutions, which means that users can flexibly choose different suppliers (no supplier lock) due to the fact that the surface temperature of plastic sheet is higher than the internal temperature in actual molding

in industrial 3.0 system, it is not so easy or impossible to use components from multiple suppliers in the same architecture. Software definition PLC usually has no hardware dependency, so it is easy to migrate and reuse software. Software definition PLC uses virtualization or software definition technology, and uses more software rather than hardware. Because the number of hardware required is small, it reduces the cost and reduces the occupied space. The goal is to provide off the shelf and marketable cots (COTS = commercial off the shelf) software/hardware products to achieve flexible selection and scalability of the overall solution

the architecture of virtualization technology and software definition is a software centric mode, which has advantages in system centralized management, network processing and security. Remote monitoring reduces operating costs, while maintenance engineers or operators do not always need to check the status of the machine on site; Centralized management simplifies remote monitoring, because you only need to access a file platform after verification and confirmation to manage your assets; Through cloud computing and the use of intelligent sensors (including communication capabilities and load diagnostic sensors), machine data is pushed to the cloud, and the data can be accessed through the user interface (HMI). Machine data can be used for predictive maintenance, which means that machine data can be used to predict the time when the machine will fail

PLC of software defined architecture emphasizes a system and an implementation idea. Like the software definition network and the software definition world, the embodiment of the intellectualization and standardization of PLC equipment is a typical software defined PLC, including PLC easily connected to the Internet: embedding app and analysis results into machines and clouds to realize intellectualization and self-awareness; The functions of PLC equipment can be changed and upgraded without replacing PLC hardware, so as to provide users with intelligence and realize continuous improvement; Advantages and daily management of pressure testing machine expand the application of industrial interconnection platform through API and ecosystem

based on such historical and realistic conditions, Dongtu technology timely launched a new generation of control system based on software defined control. Relatively speaking, it is easy to use system newpre3000, which uses virtualization and software defined technology to decouple traditional dedicated hardware functions, and realizes the self-adjusting and self optimizing big data-driven precise control function by realizing the combination of three-tier structure and edge cloud with high integration of erp/mes and control system

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