基于智能天线的超高输电塔变形监测技术

提出了一种基于智能天线、扩频技术的超高输电塔变形测量方案,并对系统的工作原理进行了阐述.方案通过在超高输电塔安装多个无线电信标,利用天线阵列对信标的方位、距离信息进行监测,从而得到超高输电塔的变形量.针对多信标的波达方向估计需求,提出了一种基于平面阵的二维多重信号分类的改进算法,并对算法进行了仿真分析.仿真结果表明,提出的算法可以精确估计所有信标的方位信息,可对超高输电塔的变形以毫米级精度进行实时监测.监测到的变形信息将直接用于评估超高输电塔的健康状况.

Deformation monitoring technique based oil smart antenna for ultra-high tower of power transmission line

A micro-deformation monitoring system is proposed for the ultra-high towers of power transmission line,which is based on the smart antenna and spread spectrum technique. Multiple radio beacons are installed on the ultra-high tower and their direction and distance are monitored by the antenna array to detect the deformation of monitored tower. A two-dimensional multiple signal classification algorithm based on planar array is proposed and analyzed. Simulative results show that the beacon positions are calculated accurately and the deformation of ultra-high tower is monitored with the resolution of millimeter in real time.