Research on safety monitoring system of tower crane based on FEM and IoT

doi:10.16265/j.cnki.issn 1003-3033.2020.11.013

Abstract

Abstract: In order to remotely monitor operation safety of tower cranes, and to reduce risk of monitoring workers, IoT technology was applied to obtain real-time sensor operation data of tower cranes, and a FEM-based real-time SMS for its structure was developed. Then, its dynamic structure mesh was updated automatically in real time on local computer by SMS based on sensor data collected by mobile communication network. Finally, linear equations governing operation process were solved by Cholesky solver, and a comparison between remote monitoring results and filed measurements was made for stress and deflection of tower crane members. The results show that solving efficiency of Cholesky is much better than that of Gauss solver with its time cost for each computation less than 0.5 s. And analysis errors of SMS pertaining to deflection and strain results are respectively less than 14% and 12%, which indicate that SMS is reliable and accurate.

Key words: finite element method (FEM), internet of things (IoT), tower crane, safety monitoring system(SMS), Gaussion soluer

CLC Number:

X952

HE Guanghui, LI Xiaowei, LI Xinkui, SHEN Zhiyong. Research on safety monitoring system of tower crane based on FEM and IoT[J]. China Safety Science Journal, 2020, 30(11): 88-94.

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