The construction of smart factories is being selected by the global manufacturing industry as the next medium- and long-term development vision. It is also an important breakthrough for China's manufacturing transformation and upgrading. The essence of smart factories lies in the extension of the network in the industrial field. Ren Duo two veins, play the role of information, and quickly integrate production and marketing information. Specifically, the smart factory is not only the automation of production, but also ensures smooth production through remote monitoring process. It can also assist manufacturers to integrate production management, logistics management and warehouse management in each factory, and match the demand and scale of production capacity in real time to avoid large-scale construction. Rapidly increase production capacity to meet the real-time production needs of customized orders.
Industrial Ethernet, as an efficient local area network, has been responsible for sensor data transmission and production equipment control since its inception. It is an important part of modern industrial automation production system and the basis of factory informationization. Its construction has become the core of smart factory construction. At this year's Munich Shanghai Electronics Show 2015, Industrial Ethernet began to receive widespread attention.
Industrial Ethernet
Is the core of the smart factory
If the automation of the third industrial revolution is to target the production process, it will apply information technology. Industry 4.0 has greatly expanded the application of information technology and derived the concept of “smart factoryâ€. Its key technology is information technology.
"Industrial Ethernet, interoperability, real-time control, and thus security and energy saving will be the core technology of smart factories." Wang Junfeng, deputy director of the integrated marketing department of Renesas Electronics General Solutions Center, said in an interview. Specifically, it includes M2M that realizes self-discipline coordination of production equipment networking, access to big data applications through network, development, sales, ERP, PLM, SCM and other business management systems and actual production processes.
Because modern smart factories have four key points: First, they need to connect all networks to get data. The second is to have a smart machine. The third is big data. After all devices and owners are connected, all data is transferred to the smart terminal in large quantities. The fourth is analysis. After obtaining the data, the application trend is taken out to improve the detection and prediction level of the device state. Wang Junfeng believes: "To form high-speed transmission, big data, to ensure real-time, security and energy saving becomes critical. This is the key to the construction of industrial Ethernet."
Standardized multi-protocol
Is the main problem of Ethernet
If the construction of high-speed, big data security and energy-saving industrial Ethernet is to seize the "head of the smart factory", then solving the multi-standard problems of industry and network is the key to industrial Ethernet. In recent years, Industrial Ethernet has undergone continuous development, and its practicality and ease of use have made great progress, and its application range has gradually expanded. However, the rapid growth of applications is bound to be accompanied by fierce competition from various vendors in this field. Today, various industrial Ethernets supported by different manufacturers have set up their own stage. Industrial Ethernet communication LSI supports a variety of industrial Ethernet protocols and fieldbus protocols: EtherCAT, CC-Link IE Field, DeviceNet, PROFINET (RT), EtherNet/IP, ModbusTCP) CANopen, CC-Link.
Many different communication protocols have become standard protocols in the industrial Ethernet market, so industrial device system designers who want to support different protocols required by the market or who want to support multiple protocols in the same device will face increased development time. . According to the senior engineer of Shanghai Institute of Industrial Automation Instrumentation, the industrial Ethernet that we usually refer to is in accordance with the IEEE802.3 standard in the physical layer and the data link layer, and the difference between different types of industrial Ethernet is mainly At the application layer. To some extent, different types of industrial Ethernet can solve interconnection and interoperability, but still can not solve the problem of interoperability between devices. Devices using different Industrial Ethernet can coexist completely, but they cannot talk. Interoperability is a difference in the application layer. To use multiple Ethernet devices in the same network, a gateway is required for protocol conversion.
"This requires the development of a communication chip that supports multiple protocols at the same time. Of course, the development of the Ethernet protocol, application development, hardware development, and conformance testing need to be considered during the development process. It takes a long time from development to mass production." Wang Junfeng said. "Renesas Electronics has introduced the R-IN development platform that combines high-speed, real-time performance and low power consumption with interfaces that support multiple industrial Ethernet communication standards such as EtherCAT, CC-LinkIE, EtherNet/IP and PROFINET. Global support for the development of industrial equipment including industrial Ethernet communication functions, including manufacturing equipment, security cameras and robotics."
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