Measurement technology of cable length time difference method based on TDR technology
吴德勇 1高瑞阳 2崔玉麟2
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作者信息
1. 江苏省送变电有限公司,南京 211102
2. 南京工程学院电力工程学院,南京 211167
折叠
摘要
为了提升电缆线长测量精度,为输电线缆的实际铺设奠定基础,研究基于TDR技术与深度神经网络的电缆线长时差法测量技术.结合时差法与R B F深度神经网络,实现对待测电缆线起始端点的定位,通过TDR技术向所定位的起始端点位置注入脉冲电压信号,运用模拟内插值法得出入射脉冲与反射脉冲的时间间隔,运算获得脉冲的行波波速,得出待测电缆线的长度.实验结果表明,该技术可精准定位实验电缆线的起始端点位置,位置坐标的最高误差低于0.13 m,能够测量出实验电缆线的长度,所测长度与实际电缆线长度较为接近.
Abstract
In order to improve the measurement accuracy of cable length and lay the foundation for the actu-al laying of transmission cables,the time difference measurement technology of cable length based on TDR technology and deep neural network is studied.Combining the time difference method and RBF deep neural network,the location of the starting end point of the cable to be tested is realized.The pulse voltage signal is injected into the location of the starting end point through TDR technology.Then,the time interval be-tween the incoming and outgoing pulse and the reflected pulse is obtained by analog interpolation method.The traveling wave velocity of the pulse is calculated to obtain the length of the cable to be tested.The re-sults show that this technology can accurately locate the starting end point of the experimental cable,The maximum error of the position coordinate is less than 0.13m,and the length of the experimental cable can be measured,which is close to the actual cable length.
关键词
DR技术/深度神经网络/电缆线长/时差法
Key words
TDR technology/deep neural network/cable length/the time difference method
维普
万方数据