A circuit used to transmit data on low voltage power line is designed and presented in this paper.
本文作者设计了用于在低压电力线上进行数据传输的电路模块。
The communication system model is set up with MSK and double-pathway spread spectrum for low voltage power line.
基于该模型，研制了低压电力线的MSK双路扩谱通信电路系统。
The paper is about the hardware circuit & working principle of meter based on the low voltage power line carrier.
本文给出了一个基于低压电力线载波技术的电参数测量仪的硬件系统。
The characteristics of power line channel are the foundation of designing the low voltage power line carrier communication system.
低压电力线信道特性是设计低压电力线载波通信系统的基础。
Automatic meter reading system on low voltage power line is composed of devices collecting the information of ammeter, channels and web servers.
低压电力线自动抄表系统主要由采集电能表信息的集中器、信道和主站等设备组成。
It is proved by experiment and analysis strategy is feasible, and the circuits feature is appropriate to transmit data on low voltage power line.
实验结果证明，笔者提出的方案是正确可行的，电路模块的性能也很好，适用于低压电力线上传播数据。
In order to improve the practicability of the low voltage power line carrier communication (PLCC) some high level communication protocols should be applied.
为了提高低压电力线载波通信的实用性，需要配合使用合适的高层通信协议。
According to the characteristics of low voltage power line, the automatic relay routing algorithm with relay constraints is employed in user data receiving.
同时依据低压电力线的特点，采用具有中继约束条件的自动中继路由算法实现用户电量的抄收。
Finally, a practical calculation example of clamping the voltage of low voltage power line under the surge and effusion surge current by metal oxide varistor is given.
最后计算了在交流电源中用氧化锌压敏电阻对浪涌进行限幅和泻流的一个实例。
Thus, the system can restrain the noise from low voltage power line and improve communication reliability. It may be widely applied to the communication field using low voltage power line.
因此，该低压电力线扩谱通信系统能较好地抑制低压电力线通信信道的干扰，提高了通信的可靠性，可广泛应用于低压电力线通信领域。
The Wigner Ville time frequency analysis in conjunction with properly selected OFDM parameters is applied to evaluate the signal dynamic range performance over the low voltage power line network.
为了研究OFDM信号在低压电力线上的传输情况，运用基于维格纳分布的时频分析方法对电力线上的信号进行分析。
Orthogonal Multi-Carrier Modulation(OMCM) is adopted to overcome the frequency selectivity and time variation of low-voltage power line channel.
为克服低压电力线信道的频率选择性和时变性，系统采用正交多载波方式传输信息。
The low-voltage power line channel properties are analyzed in this paper and a decision feedback channel estimation method is proposed on condition of slow time-variant of channel.
该文分析了低压电力线信道特性，利用信道慢时变的特点提出一种适合于电力线信道的判决反馈信道估计方法。
At present, transmitting speed of medium and high voltage power line carrier is very low, and these kinds of carriers can be used only in low speed situation, and the number of user is limited.
目前的中高压电力线载波通信的传输速率都很低，只能应用于低速的场合，用户容量有限。
Power source. Pneumatic, low voltage or line voltage can be specified.
电源。可以指定气动、低压或线压。
Through this paper, the low-voltage power line network and channel characteristics are researched. The noise and attenuation characteristics of power line channel are measured and analyzed.
本文首先分析了低压电力线网络的特点及信道特性，对电力线信道的噪声和复衰减特性分别进行了测量及分析。
Almost all the power converters in use up to now are line-commutated, when the level of active power is low, and reactive power consumed is high, being very harmful for the connection bus voltage.
至今几乎所有的电力变换器为在线换向式的当有功功率较小，而消耗的无功较大时，对所联接母线的电压是非常有害的。
The system requires two improvements: (1) the ability to counter the severe communication condition of low-voltage power line and (2) the ability to transmit music signal.
系统还需要在两个方面进行改进：(1)抵抗低压电力线恶劣通信状况的能力；(2)适合于音乐信号的传送。
Therefore, there is a wide foreground for the study and application of low-voltage power line communication technology.
因此，研究、开发和应用低压电力线载波通信技术具有非常重大的意义和十分广阔的前景。
Firstly, this paper advanced a control system based on the low-voltage power line carrier.
首先，论文提出了一种基于低压电力线载波技术的总线式控制网络。
So it will be applicable to different kinds of low-voltage distribution networks and plays its role of reducing line depletion and improving the quality and stability of the power grid operation.
所以它将适用于各类中低压配电网络，起到降低线路损耗，提高电网运行质量和稳定性的作用。
The paper briefly introduces the design options, system configuration, equipment selection and engineering application of low-voltage short-line pilot protections in enterprise's power supply system.
简要介绍企业供电系统的低压短线路纵联保护设计方案、系统配置、设备选择及工程应用。
Channel estimation is researched for OFDM system in low-voltage power line communication in this paper.
本文主要研究基于OFDM的低压电力线通信信道估计算法。
OFDM technique has been the mainstream in low-voltage power line communication because of its good capability against interference and high transmission rate.
OFDM技术以其抗干扰性强，传输速率高成为低压电力线高速通信的主流技术。 信道估计算法是OFDM系统接收端的关键技术之一。
Due to many advantages of Orthogonal Frequency Division Multiplexing technique, it becomes the best choice for low-voltage power line broadband communication.
正交频分复用技术以其多种优势成为低压电力线宽带通信的最佳选择，信道估计是正交频分复用系统的关键问题之一。
The existing condition of low-voltage power supply system of mine underground was analyzed, in view of the existing problems of low-voltage power supply line, the improvement scheme was proposed.
分析了矿山井下低压供电系统的现状，针对低压供电线路存在的问题提出了改进方案。
The data communication hardware and software of low-voltage power line based on coding method are built on RISE3201.
在编码方法的基础上搭建基于RISE3201低压电力线数据通信硬件和软件部分。
The data communication hardware and software of low-voltage power line based on coding method are built on RISE3201.
在编码方法的基础上搭建基于RISE3201低压电力线数据通信硬件和软件部分。
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