Title:
AUTOMATIC DETECTION METHOD OF CONDUCTOR HEIGHT AND PULL-OUT VALUE OF OVERHEAD LINE SYSTEM BASED ON VEHICLE-MOUNTED MOBILE LASER POINT CLOUD
Document Type and Number:
WIPO Patent Application WO/2023/019709
Kind Code:
A1
Abstract:
Disclosed is an automatic detection method of a conductor height and a pull-out value of an overhead line system based on a vehicle-mounted mobile laser point cloud. The method comprises: firstly, setting an angle segmentation threshold according to scanning angles corresponding to a track structure and an overhead line system structure, performing segmentation to obtain a track point cloud and an overhead line system point cloud, and removing point cloud noise by using a statistical filtering algorithm; secondly, on the basis of a trajectory of mobile scanning, segmenting to obtain a steel rail point cloud by using a cuboid segmentation algorithm, and segmenting to obtain overhead line and positioning point clouds by using a cylinder segmentation algorithm; thirdly, registering the steel rail point cloud by using PCA and GICP, extracting the overhead line point cloud by using RANSAC, and extracting a suspension point cloud by using a dimension analysis method; and finally, calculating a conductor height and a pull-out value of an overhead line according to conductor height and pull-out value definitions. The method has the characteristics of high precision, high efficiency, high automation degree, and the like, can be used as an effective supplement of a normal detection mode of the conductor height and the pull-out value of the overhead line system, and serves static acceptance of a newly built railway and operation detection of existing railway lines.
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Inventors:
XU LEI (CN)
DOU XIAOLEI (CN)
ZHANG GUANJUN (CN)
MU CHUNLIN (CN)
GONG JIAN (CN)
XIE CHUNXI (CN)
LIU CHENG (CN)
YANG YUANWEI (CN)
LIANG YONG (CN)
SHI DEBIN (CN)
DONG YANXI (CN)
ZHAO MENGJIE (CN)
DOU XIAOLEI (CN)
ZHANG GUANJUN (CN)
MU CHUNLIN (CN)
GONG JIAN (CN)
XIE CHUNXI (CN)
LIU CHENG (CN)
YANG YUANWEI (CN)
LIANG YONG (CN)
SHI DEBIN (CN)
DONG YANXI (CN)
ZHAO MENGJIE (CN)
Application Number:
PCT/CN2021/124110
Publication Date:
February 23, 2023
Filing Date:
October 15, 2021
Export Citation:
Assignee:
CHINA RAILWAY DESIGN CORP (CN)
International Classes:
G06T5/00
Domestic Patent References:
| WO2016118672A2 | 2016-07-28 |
Foreign References:
| CN110647798A | 2020-01-03 | |||
| CN112414309A | 2021-02-26 | |||
| CN103852011A | 2014-06-11 | |||
| CN108564575A | 2018-09-21 | |||
| US20210146970A1 | 2021-05-20 |
Attorney, Agent or Firm:
TIANJIN CZRC IP CO., LTD. (CN)
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