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| Intelligent inspector for segment dislocation based on C/S architecture |
| XU Mingze1,2, LIN Nan1,2, GUO Wei3, XIE Lifu3, GUAN Zhenchang3*
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1. Shanghai Jianke Engineering Consulting Co., Ltd., Shanghai 200032, China;
2. Shanghai Key Laboratory of Engineering Structure Safety, Shanghai 200032, China;
3. College of Civil Engineering, Fuzhou University, Fuzhou 350116, Fujian, China |
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Abstract Traditional methods for measuring segment dislocation in shield tunnels suffer from disadvantages such as high equipment costs and low computational efficiency. To address these issues, an intelligent inspector based on a Client/Server(C/S)architecture was designed and developed. For the hardware, the Raspberry Pi 4B was employed as the main control module, integrated with a binocular camera equipped with a CMOS sensor and an LED display, to enable real-time image acquisition and display. On the software side, a decoupling of the front-end and back-end functions was implemented based on the TCP/IP protocol. The client(front-end), deployed on the intelligent inspector, handled camera invocation, image acquisition, data transmission, and result visualization. The server(back-end), deployed on a consumer-grade computer, was responsible for data listening, invoking the core binocular vision ranging algorithm, and returning the results. The proposed inspector was applied to a section of the Fuzhou Binhai Express Line shield tunnel. The experimental results showed that the calculated values agreed well with the measurements from a weld gauge, achieving a sub-millimeter accuracy in segment dislocation measurement. A single detection took only 5.40 seconds, effectively improving inspection efficiency while ensuring measurement accuracy. This study provides a new approach for the rapid and accurate inspection of segment dislocation in shield tunnels.
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Published: 29 December 2025
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