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Author

Dong Zhang

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Sep 2026

Design and implementation of a multi-level safety protection system for elevators based on PLC and star-sealing technology in case of power failure

To address the secondary entrapment risk and the single-point protection defect of elevator power-off emergency devices, a multi-level safety protection system was designed based on a Programmable Logic Controller (PLC) and permanent magnet synchronous door machine star-sealing technology. The system is centered on the...

Dong Zhang, Ying Zhang, Huan-Qiu Wang et al. · 0 citations

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