建筑環(huán)境信息物理融合系統(tǒng)通信技術研究
[Abstract]:In this paper, according to the characteristics and technical advantages of information physical fusion system (Cyber-Physical System, CPS), the CPS architecture model of building environment is constructed, and its communication technology is studied. The game theory method is introduced into CPS communication resource allocation, and a CPS communication resource allocation algorithm based on game theory is proposed, which effectively improves the utilization rate of CPS communication resources. Then, based on ZigBee technology and wireless Mesh network, the architecture of CPS communication platform in building environment is built, and the specific communication interface is designed. Finally, a three-dimensional centroids location algorithm is proposed in the building environment CPS, which improves the positioning accuracy of the building environment. In this paper, CPS is introduced into the building environment, to a certain extent, the level of building intelligence is improved, and the whole CPS is further improved. Firstly, the concept, characteristics and related technical support of information physics fusion system are introduced, and the CPS architecture model is put forward. On the basis of CPS, combined with the building environment, this paper puts forward the CPS architecture model of the building environment, expounds its design goal, the overall design scheme of the architecture, and puts forward its physical layer, network layer and service layer. The functional characteristics of the application layer are introduced in detail. Secondly, it introduces the concept of game theory, the basic elements, the definition of cooperative game and non-cooperative game, Nash bargaining solution, Pareto optimization, Nash equilibrium and other important concepts, and then combines it with CPS. A CPS communication resource allocation algorithm based on game theory is proposed. This paper mainly discusses OFDMA resource allocation algorithm and WMN channel allocation (WMN Channel Allocation Based on Game Theory, W-CABG algorithm in CPS. The OFDMA resource allocation algorithm mainly discusses the multi-user resource allocation of OFDMA network downlink in CPS. The allocation process is modeled as a cooperative game between users, and the Pareto optimality between users is realized by solving Nash bargaining solution (Nash Bargaining Solution, NBS),. The W-CABG algorithm mainly discusses the channel allocation problem of WMN, solves the Nash equilibrium (Nash Equilibrium, NE), among users, and proves the convergence of the algorithm. The simulation results show that the above algorithm has achieved good results and realized the effective integration of game theory and CPS communication resource allocation. Then, based on ZigBee technology and wireless Mesh network, the architecture of building environment CPS communication platform based on ZigBee-Mesh network is constructed. The requirements of the system networking, the capacity of the network, and the channel allocation scheme are analyzed. Then the CPS communication interface of building environment is designed, and its peripheral circuit, power management module, simulator interface module and user interface module for application extension are designed with CC2530 chip as the core. Finally, under the CPS communication platform of building environment, the location algorithm of building environment is studied. A method of combining LANDMARC algorithm with centroids algorithm in three-dimensional space is proposed, and the feasibility of the algorithm is verified by simulation through the reasonable arrangement of RFID tags, and the positioning accuracy of the building environment is improved.
【學位授予單位】:沈陽建筑大學
【學位級別】:碩士
【學位授予年份】:2014
【分類號】:TU18;TU855
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