摘要
根据工频控制技术的基本原理,建立了简单的信号传输模型,并分析了工频通信信号在配电网中的传输特性。通过采用时间测量比较的检测方法和提高LM339过零比较器精度的方法来提高工频通信信号的灵敏度。
A simple signal transfer model is built according to the basic principles of the industrial frequency control technique and the transmission characteristics of the industrial frequency communication signal in distribution networks are analysed and the sensitivity of frequency communication signal is improved through the detecting method of measurement and comparing of time and the method of improving the precision of LM339 zero-crossing comparator.
出处
《仪器仪表用户》
2008年第2期74-76,共3页
Instrumentation
关键词
工频控制技术
传输模型
检测方法
过零比较器
industrial frequency control technique
transmission model
detection method
zero-crossing comparator
