基于短距无线通信与3G的无线集中抄表系统-计算机工程.PDF

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基于短距无线通信与3G的无线集中抄表系统-计算机工程.PDF

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基于短距无线通信与3G的无线集中抄表系统-计算机工程

37 2 2011 1 Vol.37 No.2 Computer Engineering January 2011 ·· 2011 A TN915.04 3G ( 230027) 3G 3G 3G 3G RS-485 nRF905 Wireless Centralized Meter Reading System Based on Short Distance Wireless Communication and 3G GONG Hao, QU Yu-gui (Department of Electronic Engineering and Information Science, University of Science and Technology of China, Hefei 230027, China) AbstractThis paper analyzes the shortcomings of existing meter reading systems, proposes a wireless centralized meter reading system based on short distance wireless communication and 3G. The system combines the short distance wireless communication and 3G technology together with the data’s collection and transmission through a wireless manner. The collected data of meter are transmitted through the 3G network to the billing department of the data management center. When compared with existing meter reading systems, this system has a more flexible layout, larger coverage, lower power consumption , higher real-time features, less interference and gets better results in practical application. Key wordswireless communication; 3G; wireless meter reading system; RS-485 pattern; nRF905 chip DOI: 10.3969/j.issn.1000-3428.2011.02.102 1 [1-3] RS-485 RS-485 . . . . . .