【摘要】：低壓電力線通信系統(tǒng)具有成本低、分布廣、接入簡(jiǎn)單等特點(diǎn),在電力信息傳輸網(wǎng)絡(luò)中有極其重要的應(yīng)用前景,是近年來(lái)學(xué)者研究的主要問(wèn)題。G3-PLC標(biāo)準(zhǔn)能夠?qū)崿F(xiàn)數(shù)據(jù)信息高效且穩(wěn)定的傳輸,利用FPGA(Field Programmable Gate Array)設(shè)計(jì)靈活,開(kāi)發(fā)周期短以及特有的并行處理方式等特點(diǎn)實(shí)現(xiàn)低壓電力線通信,能夠有效的提高算法效率和傳輸速率,解決現(xiàn)有系統(tǒng)集成度低、擴(kuò)展性差、價(jià)格昂貴等問(wèn)題。論文研究分析了低壓電力線信道的傳輸特性,著重闡述了低壓電力線信道的阻抗特性、多徑衰落特性和環(huán)境噪聲,根據(jù)其信道特性建立了低壓電力線信道模型,并依據(jù)G3-PL標(biāo)準(zhǔn)的相關(guān)規(guī)定確定本系統(tǒng)的結(jié)構(gòu)組成和設(shè)計(jì)目標(biāo)參數(shù)。然后利用Altera FPGA平臺(tái)實(shí)現(xiàn)OFDM調(diào)制解調(diào),在Quartus II開(kāi)發(fā)環(huán)境下利用Verilog語(yǔ)言進(jìn)行了程序設(shè)計(jì)及時(shí)序和仿真驗(yàn)證,使用SignalTap II邏輯分析儀捕獲OFDM系統(tǒng)實(shí)時(shí)信號(hào),驗(yàn)證了調(diào)制解調(diào)模塊設(shè)計(jì)的正確性和有效性。論文分析了電力線耦合模塊的設(shè)計(jì)要求和技術(shù)指標(biāo),使用TI公司的AFE031芯片設(shè)計(jì)了系統(tǒng)的外圍電路,包括模擬前端電路和耦合變壓器設(shè)計(jì),同時(shí)在simulink平臺(tái)下對(duì)設(shè)計(jì)電路進(jìn)行仿真。仿真結(jié)果表明所設(shè)計(jì)的電路滿足系統(tǒng)的要求,為后續(xù)在電力線中實(shí)際通信和測(cè)試提供了平臺(tái)。
[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.
【學(xué)位授予單位】：貴州大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2016
【分類(lèi)號(hào)】：TN913.6
，

本文編號(hào)：2281328