基于光纤光栅传感器的低压台区全景化感知技术  

Panoramic sensing technology of low voltage station based on FBG sensor

作　　者：袁珂[1] 蔡美芳[1] 魏增光[2] YUAN Ke;CAI Meifang;WEI Zengguang(School of Artificial Intelligence,Nanchang Institute of Science and Technology,Nanchang 330108,China;Nanchang industrial technology research institute,Nanchang 330006,China)

机构地区：[1]南昌工学院人工智能学院,南昌330108 [2]南昌市工业技术研究院,南昌330006

出　　处：《激光杂志》2021年第2期139-143,共5页Laser Journal

基　　金：江西省教育厅科学技术研究项目(No.GJJ191106)。

摘　　要：针对低压台区设备种类繁多、通信接口各异,很难有效地接入电力物联网中,导致无法感知低压配电台区的工作状态及运行情况的问题,采用了光纤光栅传感器实现低压台区全景化感知。通过光纤光栅传感器测得的应变值作为观测信号,引入梁状态方程,利用有限元软件实施离散化处理,降低传感器的使用噪声。在低压台区将镜头处于平面内采集周围环境信息,运用载波信号传输的多径效应推导满足压缩感知条件正交频分复用的多径传输信道,根据全景化感知技术将多径信道估计问题合理转换为压缩感知信号重构问题,验证了感知技术的性能。实验结果表明,所提方法在运行时能够节省大量时间,感知效果较好,具有良好的性能、显著的优越性以及实用性。Given the wide variety of equipment in low-voltage station areas and the different communication interfaces,it is difficult to effectively connect to the Internet of Things,resulting in the inability to perceive the working status and operation of the low-voltage distribution station area.The fibre grating sensor is used to realise the low-voltage station area Panoramic perception—Taiwan Region panoramic sensing technology.The strain value measured by the fibre Bragg grating sensor is used as the observation signal,the beam state equation is introduced,and the finite element software is used to implement discretisation to reduce the sensor’s noise.In the low-voltage station area,the lens is located in the plane to collect the surrounding environment information.The multipath effect of carrier signal transmission is used to derive a multipath transmission channel that meets the compressed sensing conditions—orthogonal frequency division multiplexing.The multipath channel estimation problem is based on the panoramic sensing technology.The reasonable transformation into the compressed sensing signal reconstruction problem verifies the performance of the sensing technology.Experimental results show that the proposed method can save much time during operation,has a better perception effect,and has good performance,significant advantages,and practicability.

关 键 词：光纤光栅传感器 离散化处理 环形对称排列 全景化感知技术 

分 类 号：TN929[电子电信—通信与信息系统]