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“Wire system” means the number of wires used for meter power supply and standard signal transmission. The name of a few wire system is after the birth of the two wire transmitter. This is the result of the wide application of electronic amplifiers in instruments. The essence of amplification is an energy conversion process, which…
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In daily life, we all know that the commonly used power supply voltage is 220V, while the voltage of many large machines in the factory workshop is 380V. Generally, two wires are 380V, and one wire is 220V. Why is this? Electricity is a vector quantity. It has direction and magnitude. The three – phase…
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Recently it seems that often hear the use of electric water heater, leakage of electric injury incidents, and for this kind of news, many people will choose to unplug the electric water heater when taking a bath, once to avoid the danger of electric shock. This seems like a good idea, but if the electric…
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As we all know, synchronous generators are excited by DC current. The basic principle of a generator is that a rotating magnetic field passes over the winding, creating an electromotive force in the winding, which generates electricity. The rotating magnetic field is generated by the excitation current through the rotor, so the excitation is very…
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IS420ESWBH3A Abstract: In recent years, the continuous development of high technology, the industrial development of our country continuously inject new vitality, modern society, the industrial development is also to rely on technical production, industrial electric automation for the development of enterprises to provide better production technology, has effectively improved production quality and production efficiency. Industrial…
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3.2 External Problems. Security assessment is difficult. IS420ESWBH2A Safety assessment is the first step to establish a safety protection system, industrial control system information security assessment standards is the first issued by the state on the safety of industrial control system standards, the Ministry of Industry and Information Technology in 2011 notice clearly required to…
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2.1 Processor Selection IS220UCSAH1A Embedded controller is widely used in industry. Because the processor is the core of the controller, different types of processors have different application bases. Embedded processors are mainly divided into four categories: embedded microprocessor, embedded microcontroller, embedded DSP, and embedded system-on-chip SOC[3]. However, with the increasingly high requirements for embedded control…
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Key words: industrial control system; Information security; Problem risk; Defense system Introduction of industrial control system IS220UCSAH1A Industrial control system is composed of various components, some components are automatic, some are able to carry out process monitoring, two components constitute the main body of the industrial control system. The main purpose of this system is…
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Key words: embedded controller; Construction machinery; control Chinese Library Classification number :TP391 Document code :A Paper number :1009-3044(2010)05-1227-02 350-805595-208 ACC-5595-208 embedded system has a wide range of applications in manufacturing, industrial control. At present, embedded control systems in industrial control are developing towards high speed, high integration and low power consumption. Research on embedded control…
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Abstract: In recent years, the continuous development of high technology, the industrial development of our country continuously inject new vitality, modern society, the industrial development is also to rely on technical production, industrial electric automation for the development of enterprises to provide better production technology, has effectively improved production quality and production efficiency. PR6423/010-140+CON021 Industrial…
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