Rapid mobile inspection equipment for metro tunnels based on multi-sensor integration

The acquisition of tunnel inspection data is fundamental to tunnel operation and maintenance. Existing inspection equipment is either based on laser scanning or CCD cameras. Laser scanning-based devices often struggle to detect cracks, while equipment based on CCD cameras is unable to acquire point...

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Published in:Scientific reports Vol. 15; no. 1; pp. 34943 - 21
Main Authors: Fan, Tingli, Mao, Qingzhou, Tang, Chao, Wang, Li, Li, Jiulin, Bao, Yan, Gao, Tao, Pei, Lejun, Zhang, Dongliang, Wang, Yong
Format: Journal Article
Language:English
Published: London Nature Publishing Group UK 07.10.2025
Nature Publishing Group
Nature Portfolio
Subjects:
3D modeling
639/166/986
639/166/987
Accuracy
Cameras
CCD cameras
Cracks
Data acquisition
Data processing
Defects detection
Design
Humanities and Social Sciences
Inspection
Laser scanning system
Lasers
Metro tunnel
multidisciplinary
Scanners
Science
Science (multidisciplinary)
Sensors
Synchronization
Vehicles
Vision systems
3D modeling
Defects detection
Metro tunnel
Laser scanning system
CCD cameras
ISSN:2045-2322, 2045-2322
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Abstract The acquisition of tunnel inspection data is fundamental to tunnel operation and maintenance. Existing inspection equipment is either based on laser scanning or CCD cameras. Laser scanning-based devices often struggle to detect cracks, while equipment based on CCD cameras is unable to acquire point cloud to assess tunnel deformations. In order to obtain high-quality, comprehensive data, this paper develops a mobile three-dimensional inspection device CKY-200, integrated with multiple sensors. The CKY-200 addresses the temporal and spatial synchronization issues of CCD cameras and laser scanners. Considering the convenience of inspection, the device progresses on the track powered by electricity. Moreover. This article proposes a tunnel deformation detection algorithm and a crack width measurement method, and verifies the accuracy of the data collected by the equipment. Through on-site experiments and comparison, the CKY-200 provides the advantages of more comprehensive data acquisition while ensuring high precision and speed.
AbstractList The acquisition of tunnel inspection data is fundamental to tunnel operation and maintenance. Existing inspection equipment is either based on laser scanning or CCD cameras. Laser scanning-based devices often struggle to detect cracks, while equipment based on CCD cameras is unable to acquire point cloud to assess tunnel deformations. In order to obtain high-quality, comprehensive data, this paper develops a mobile three-dimensional inspection device CKY-200, integrated with multiple sensors. The CKY-200 addresses the temporal and spatial synchronization issues of CCD cameras and laser scanners. Considering the convenience of inspection, the device progresses on the track powered by electricity. Moreover. This article proposes a tunnel deformation detection algorithm and a crack width measurement method, and verifies the accuracy of the data collected by the equipment. Through on-site experiments and comparison, the CKY-200 provides the advantages of more comprehensive data acquisition while ensuring high precision and speed.
Abstract The acquisition of tunnel inspection data is fundamental to tunnel operation and maintenance. Existing inspection equipment is either based on laser scanning or CCD cameras. Laser scanning-based devices often struggle to detect cracks, while equipment based on CCD cameras is unable to acquire point cloud to assess tunnel deformations. In order to obtain high-quality, comprehensive data, this paper develops a mobile three-dimensional inspection device CKY-200, integrated with multiple sensors. The CKY-200 addresses the temporal and spatial synchronization issues of CCD cameras and laser scanners. Considering the convenience of inspection, the device progresses on the track powered by electricity. Moreover. This article proposes a tunnel deformation detection algorithm and a crack width measurement method, and verifies the accuracy of the data collected by the equipment. Through on-site experiments and comparison, the CKY-200 provides the advantages of more comprehensive data acquisition while ensuring high precision and speed.
The acquisition of tunnel inspection data is fundamental to tunnel operation and maintenance. Existing inspection equipment is either based on laser scanning or CCD cameras. Laser scanning-based devices often struggle to detect cracks, while equipment based on CCD cameras is unable to acquire point cloud to assess tunnel deformations. In order to obtain high-quality, comprehensive data, this paper develops a mobile three-dimensional inspection device CKY-200, integrated with multiple sensors. The CKY-200 addresses the temporal and spatial synchronization issues of CCD cameras and laser scanners. Considering the convenience of inspection, the device progresses on the track powered by electricity. Moreover. This article proposes a tunnel deformation detection algorithm and a crack width measurement method, and verifies the accuracy of the data collected by the equipment. Through on-site experiments and comparison, the CKY-200 provides the advantages of more comprehensive data acquisition while ensuring high precision and speed.The acquisition of tunnel inspection data is fundamental to tunnel operation and maintenance. Existing inspection equipment is either based on laser scanning or CCD cameras. Laser scanning-based devices often struggle to detect cracks, while equipment based on CCD cameras is unable to acquire point cloud to assess tunnel deformations. In order to obtain high-quality, comprehensive data, this paper develops a mobile three-dimensional inspection device CKY-200, integrated with multiple sensors. The CKY-200 addresses the temporal and spatial synchronization issues of CCD cameras and laser scanners. Considering the convenience of inspection, the device progresses on the track powered by electricity. Moreover. This article proposes a tunnel deformation detection algorithm and a crack width measurement method, and verifies the accuracy of the data collected by the equipment. Through on-site experiments and comparison, the CKY-200 provides the advantages of more comprehensive data acquisition while ensuring high precision and speed.
ArticleNumber 34943
Author Mao, Qingzhou
Zhang, Dongliang
Fan, Tingli
Wang, Li
Li, Jiulin
Pei, Lejun
Gao, Tao
Bao, Yan
Wang, Yong
Tang, Chao
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  organization: The Key Laboratory of Urban Security and Disaster Engineering of China, Ministry of Education, Beijing University of Technology
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Metro tunnel
Laser scanning system
CCD cameras
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Snippet The acquisition of tunnel inspection data is fundamental to tunnel operation and maintenance. Existing inspection equipment is either based on laser scanning...
Abstract The acquisition of tunnel inspection data is fundamental to tunnel operation and maintenance. Existing inspection equipment is either based on laser...
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SubjectTerms 3D modeling
639/166/986
639/166/987
Accuracy
Cameras
CCD cameras
Cracks
Data acquisition
Data processing
Defects detection
Design
Humanities and Social Sciences
Inspection
Laser scanning system
Lasers
Metro tunnel
multidisciplinary
Scanners
Science
Science (multidisciplinary)
Sensors
Synchronization
Vehicles
Vision systems
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Title Rapid mobile inspection equipment for metro tunnels based on multi-sensor integration
URI https://link.springer.com/article/10.1038/s41598-025-18959-y
https://www.ncbi.nlm.nih.gov/pubmed/41057519
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