摘要
在电缆故障测距中,对反射脉冲信号的起始点的判断是电缆测距的核心,针对小波变换模极大值法和曲线拟合法存在的优缺点,将这两种方法相结合对反射脉冲的起始点进行检测。仿真结果表明:该方法能够有效地提高电缆故障测距的精度。
Correctly determining the starting point of reflected pulse signal means key to the cable fault location. Considering both advantages and disadvantages of the wavelet transform modulus maxima method and curve fitting method, having them integrated to detect the starting point of reflected pulse was proposed. Simulation results prove its efficiency in improving the accuracy of cable fault location.
出处
《化工自动化及仪表》
CAS
2014年第1期45-49,共5页
Control and Instruments in Chemical Industry
基金
黑龙江省教育厅科学技术研究项目(12531062)
关键词
小波变换
模极大值
故障测距
曲线拟合
wavelet transform, modulus maxima, fault location, curve fitting
