基于虚拟仪器的电力线信道噪声发生器的设计  

Design of Power Line Channel Noise Generator Using The Virtual Instrument Technology

作　　者：谢志远[1] 魏佳红 赵子龙[1] 时方[1] 

机构地区：[1]华北电力大学电子与通信工程系,河北保定071003

出　　处：《电力信息与通信技术》2014年第4期1-5,共5页Electric Power Information and Communication Technology

基　　金：国家自然科学基金资助项目(61172075)

摘　　要：为了方便对中压电力线通信调制与编码硬件电路的调试,提出一种基于虚拟仪器技术的中压电力线信道噪声发生器的设计方法,利用该方法设计的噪声发生器可模拟产生电力线信道的背景噪声、随机突发噪声等。本设计利用MATLAB建立符合中压电力线信道噪声特性的噪声模型,以此模型为基础,通过MATLAB与LabVIEW混合编程,基于虚拟仪器采集卡输出参数可变的噪声,并通过功放电路输出。实验结果表明,该噪声发生器能够产生符合信道噪声特性的噪声信号,可以为实验室测试调制与编码硬件电路的性能提供便利。In order to easily debug the medium-voltage power line communication＇s circuit of modulation and coding, this paper proposes a medium-voltage power line channel noise generator design method using the virtual instrument technology. The noise generator can generate a few noises including power line channel background noise, random burst noise and so on. The design establishes a medium voltage power line channel noise model that fits noise characteristics through MATLAB. Using the noise model, this paper implements an acquisition card based the virtual instrument technology through a combinatory of MATLAB and LabVIEW program, which can output noises with varying parameters by the power amplifier. Experimental results show that the noise generated by the noise generator can match the channel noise characteristics and the noise generator can provide convenience for debugging medium-voltage power line communication＇s circuit of modulation and coding.

关 键 词：虚拟仪器 LABVIEW 中压电力线 噪声发生器 

分 类 号：TN911.4[电子电信—通信与信息系统]