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This paper is concerned with the analysis of connecting PROFIBUS with 4G mobile network to realize the application of 4G in the field bus. First, development status and technical characteristics of PROFIBUS in the industrial network are analyzed, including the requirements of PROFIBUS Fieldbus for wireless communication systems in the intelligent and networking development. Then, the authors introduce...
In order to make wireless technology be easily applied in industrial environment, the wireless gateway for industrial fieldbus has been designed. This paper studies network structures and protocols of PROFIBUS-DP and Wi-Fi at first, then puts forward to using the method of embedded gateway finishing the interconnection communication of the two kinds of heterogeneous networks. Finally, the paper designs...
The connection between PROFIBUS network and Internet can realize remote real-time monitoring device on the fieldbus. This paper conducts detailed analysis and research advance on network security based on the interconnection methods between PROFIBUS and Internet, and proposes a PROFIBUS industrial network security model. An embedded gateway is developed especially for meeting the security requirement...
The operating status of coal machinery is related to the mining production and security directly. The embedded system and the principle of fuzzy fault tree diagnosiss were introduced into the coal machinery diagnosis. At the same time, the embedded system is used to accomplish a variety protocol conversion between field-bus and Internet to solve the problem which the equipment linked to Internet....
As the quantum channel being susceptible to be interfered by noise, the reconciliation in a quantum communication is so important. Though its security is high, the efficiency of protocol binary is low because it needs to repeat the algorithm many times for the even-digit mistakes not being able to be founded. This article will focus on an improvement of protocol binary with the Message-digest Algorithm...
The quantum cryptography is an emerging technology, which uses quantum mechanics properties of micro-particles to encode information. In the theory and practice, it has been proved to be totally safe. Because of quantum channel being susceptible to be interfered by noise, error correction in quantum communication is facing a big problem today. This article will focus on cyclic redundancy check (CRC)...
In this paper, we analyze the survivability of Mobile Ad Hoc Network systemically and give a detailed description of the survivability issues related to the MANET. We begin with analyzing the requirements of survivability of ad hoc network, and then classify the impacts that affect survivability into three categories: dynamic topology, faults and attacks. The impacts of these factors are analyzed...
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