基于G3-PLC标准的低压电力线通信系统的FPGA实现
发布时间：2018-10-19 13:54
【摘要】：低压电力线通信系统具有成本低、分布广、接入简单等特点,在电力信息传输网络中有极其重要的应用前景,是近年来学者研究的主要问题。G3-PLC标准能够实现数据信息高效且稳定的传输,利用FPGA(Field Programmable Gate Array)设计灵活,开发周期短以及特有的并行处理方式等特点实现低压电力线通信,能够有效的提高算法效率和传输速率,解决现有系统集成度低、扩展性差、价格昂贵等问题。论文研究分析了低压电力线信道的传输特性,着重阐述了低压电力线信道的阻抗特性、多径衰落特性和环境噪声,根据其信道特性建立了低压电力线信道模型,并依据G3-PL标准的相关规定确定本系统的结构组成和设计目标参数。然后利用Altera FPGA平台实现OFDM调制解调,在Quartus II开发环境下利用Verilog语言进行了程序设计及时序和仿真验证,使用SignalTap II逻辑分析仪捕获OFDM系统实时信号,验证了调制解调模块设计的正确性和有效性。论文分析了电力线耦合模块的设计要求和技术指标,使用TI公司的AFE031芯片设计了系统的外围电路,包括模拟前端电路和耦合变压器设计,同时在simulink平台下对设计电路进行仿真。仿真结果表明所设计的电路满足系统的要求,为后续在电力线中实际通信和测试提供了平台。
[Abstract]:Low-voltage power line communication system has the characteristics of low cost, wide distribution, simple access and so on. It has an extremely important application prospect in electric power information transmission network. In recent years, G3-PLC standard can realize the efficient and stable transmission of data information, make use of the characteristics of flexible design of FPGA (Field Programmable Gate Array), short development period and special parallel processing mode to realize low-voltage power line communication. It can effectively improve the efficiency and transmission rate of the algorithm, and solve the problems of low integration, poor expansibility, high price and so on. In this paper, the transmission characteristics of low voltage power line channel are studied and analyzed. The impedance characteristic, multipath fading characteristic and environmental noise of low voltage power line channel are expounded. According to its channel characteristics, a low voltage power line channel model is established. And according to the relevant provisions of the G3-PL standard, the structure of the system and design objective parameters are determined. Then the OFDM modulation and demodulation is realized by using Altera FPGA platform. Under the Quartus II development environment, the program design, timing and simulation verification are carried out by Verilog language, and the real time signal of OFDM system is captured by SignalTap II logic analyzer. The correctness and validity of modulation and demodulation module design are verified. The design requirements and technical specifications of the power line coupling module are analyzed in this paper. The peripheral circuits of the system are designed by using the AFE031 chip of TI, including the analog front-end circuit and the coupling transformer design. At the same time, the design circuit is simulated under the simulink platform. The simulation results show that the designed circuit meets the requirements of the system and provides a platform for subsequent practical communication and testing in the power line.
【学位授予单位】：贵州大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：TN913.6
，
本文编号：2281328
[Abstract]:Low-voltage power line communication system has the characteristics of low cost, wide distribution, simple access and so on. It has an extremely important application prospect in electric power information transmission network. In recent years, G3-PLC standard can realize the efficient and stable transmission of data information, make use of the characteristics of flexible design of FPGA (Field Programmable Gate Array), short development period and special parallel processing mode to realize low-voltage power line communication. It can effectively improve the efficiency and transmission rate of the algorithm, and solve the problems of low integration, poor expansibility, high price and so on. In this paper, the transmission characteristics of low voltage power line channel are studied and analyzed. The impedance characteristic, multipath fading characteristic and environmental noise of low voltage power line channel are expounded. According to its channel characteristics, a low voltage power line channel model is established. And according to the relevant provisions of the G3-PL standard, the structure of the system and design objective parameters are determined. Then the OFDM modulation and demodulation is realized by using Altera FPGA platform. Under the Quartus II development environment, the program design, timing and simulation verification are carried out by Verilog language, and the real time signal of OFDM system is captured by SignalTap II logic analyzer. The correctness and validity of modulation and demodulation module design are verified. The design requirements and technical specifications of the power line coupling module are analyzed in this paper. The peripheral circuits of the system are designed by using the AFE031 chip of TI, including the analog front-end circuit and the coupling transformer design. At the same time, the design circuit is simulated under the simulink platform. The simulation results show that the designed circuit meets the requirements of the system and provides a platform for subsequent practical communication and testing in the power line.
【学位授予单位】：贵州大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：TN913.6
，
本文编号：2281328
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