Zhang, H; Yan, X; Li, H; Jin, R and Fu, H (2019) Real-time alarming, monitoring, and locating for non-hard-hat use in construction. Journal of Construction Engineering and Management, 145(3): 04019006, ISSN 0733-9364
Abstract
Non-hard-hat use (NHU) is related to many construction accidents, so NHU inspection is crucial to safety management, in which automatic NHU monitoring plays an essential role. Existing computer vision-based NHU inspection methods lack capabilities in identifying workers and helping take real-time action. Previous sensor-based NHU inspection methods require direct skin contact, which would be uncomfortable for workers. In addition, previous sensor-based methods could be deceived by objects other than human heads and could not achieve real-time alarms. This study aims to address these problems by implementing real-time alarming, monitoring, and locating for NHU in construction based on sensor, mobile, web, and cloud techniques. A smart hard-hat system is developed using an Internet of Things (IoT)-based architecture including (1) a hard hat with an infrared beam detector and thermal infrared sensor for nonintrusive NHU detection; (2) radio-frequency identification (RFID) triggers for locating NHU with an average detection error of less than 10 cm; (3) a smartphone application for personalized warnings; (4) a web application for data visualization and alarms for managers; and (5) a cloud sever for data storage and retrieval. The proposed system enables both workers and managers to take timely actions against NHU. The system performance is evaluated in a laboratory test and validated in a field application. It is indicated that the proposed system is accurate and reliable, showing potential to promote safety inspection and supervision in construction.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | cloud server; infrared beam detector; internet of things; non-hard-hat use; radio-frequency identification; safety inspection; thermal infrared sensor; web and smartphone application |
| Index terms: | monitoring, internet, data storage, beam, inspection, safety management, manager, construction accident, computer vision, laboratory, supervision, data visualization, safety inspection |
| Subjects: | occupational health and safety management, control systems, quality assurance, research management, computing systems, computer vision, practitioner, data science, data management, structural engineering |
| Topics: | Engineering Principles, Project Management, Quality Management, Roles and Professions, Research Practice, Site Management, Digital Applications, Health and Safety |
| Descriptive scope: | 2 PC |
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