载波电流环通信硬件设计毕业论文

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1、 I 光伏发电组件监测系统 载波电流环通信硬件设计 摘要 本系统是 在 低压电流环载波 通信 信道分析和调制解调器的基础上 以 STC 系列 单片机 为核心 进行 研究的，并配以可靠的外围电路，构成了微型计算机载波电流环通信控制系统。该系统为电流环载波通信系统 ，以 CD4066 和 CD4069 为调制电路， 其 此通过放大电路，调制解调电路， 实现对系统的管理和信息的传输 。芯片将其信号先放大，再通过调制解调和耦合电路使信号顺利的通信 。信息的发送与接 收处于全双工的工作模式，确保了信息在传送过程中的准确性和可靠性。该系统有很高的性价比，利用已有的电力线设施完成信息的传递。其优点是基本上不

2、受地理环境的限制，不必为信号的传输专门设置信道，实现信道复用 。 可充分利用现有的资源，从而可以大大节约成本，因而具有可观的经济效益和可行性；同时，其传输质量也远远高于无线传播。 关键词： 单片机系统 (最小系统， A/D 转换， EEPRAM，低电压检测） ；电力线载波 ；电流环 ；调制解调 II Photovoltaic power generation module monitoring system Carrier current loop communication hardware design Abstract This system is in low current ring

3、 carrier communication channel analysis and modem on the basis of STC series single-chip microcomputer as the core of the study, and match with reliable peripheral circuit, constitute the microcomputer carrier current loop communication control system.The system for current ring carrier communicatio

4、n system, in order to CD4066 and CD4069 for modulation circuit, its this through the amplification circuit, modulation demodulation circuit, realize the system of management and information transmission.The chip will be the first signal amplification, again through the modem and the coupling circuit

5、 signal smooth communication. The information sending and receiving in full duplex work mode, to ensure that the information in the transport process of accuracy and reliability.The system has a high price, the use of existing power facilities complete information transfer.Its advantage is basically

6、 not affected by geographical environment restriction, do not have to set the signal transmission channel, realize channel multiplexing.Can make full use of the existing resources, thus can greatly save cost, thus has considerable economic benefit and feasibility, At the same time, the transmission quality also far higher than wireless communication. Keywords: single chip microcomputer system ( minimum system, A/D conversion, EEPRAM, low voltage detection )； power line carrier, current loop modulation, demo