A manhole cover automatic identification system based on three-dimensional detection

By combining 3D detection technology with cloud processing modules, the problems of 3D morphological recognition and abnormal monitoring of connection parts in manhole cover inspection have been solved, realizing high-precision and centralized management of manhole covers.

CN122415488APending Publication Date: 2026-07-17NANJING XIYING MEASUREMENT CONTROL TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
NANJING XIYING MEASUREMENT CONTROL TECH
Filing Date
2026-04-17
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing manhole cover detection technologies are insufficient to accurately identify the three-dimensional spatial shape of manhole covers and abnormal conditions of connection parts, and lack large-scale centralized management methods.

Method used

An automatic manhole cover identification system based on 3D detection is adopted, which combines the prefabricated manhole cover structure with binocular vision 3D detection technology. The system acquires the 3D spatial information of the manhole cover and its connection parts through a 3D point cloud acquisition sensor and uploads it to the cloud processing module for centralized analysis.

Benefits of technology

It enables comprehensive and high-precision monitoring of key parts of the manhole cover body, connecting bolts and base, significantly improving the accuracy and comprehensiveness of anomaly detection, and supporting centralized and intelligent management of large-scale manhole covers.

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Abstract

The present application belongs to the technical field of intelligent monitoring of municipal facilities, and particularly relates to a manhole cover automatic identification system based on three-dimensional detection, comprising a fabricated manhole cover and a three-dimensional point cloud detection system for detecting the fabricated manhole cover. By arranging mark points on the key positions such as the lower surface of the manhole cover, the inclined surface of the base, the vertical surface and the bolt, the three-dimensional point cloud collection sensor of binocular vision is used to realize the omnidirectional spatial position monitoring of the manhole cover body, the connecting piece and the base. Through the comparison of mark point coordinates, the position of loosening, displacement or deformation can be accurately positioned. The present application can realize the comprehensive and high-precision monitoring and intelligent identification of the key positions of the manhole cover body, the connecting bolt and the base by integrating the fabricated manhole cover structure and the binocular vision three-dimensional detection technology and combining with cloud processing.
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