Deep Learning Detection of Personal Protective Equipment to Maintain Safety Compliance on Construction Sites

Author(s):  
Nipun D. Nath ◽  
Amir H. Behzadan
Sensors ◽  
2021 ◽  
Vol 21 (10) ◽  
pp. 3478
Author(s):  
Zijian Wang ◽  
Yimin Wu ◽  
Lichao Yang ◽  
Arjun Thirunavukarasu ◽  
Colin Evison ◽  
...  

The existing deep learning-based Personal Protective Equipment (PPE) detectors can only detect limited types of PPE and their performance needs to be improved, particularly for their deployment on real construction sites. This paper introduces an approach to train and evaluate eight deep learning detectors, for real application purposes, based on You Only Look Once (YOLO) architectures for six classes, including helmets with four colours, person, and vest. Meanwhile, a dedicated high-quality dataset, CHV, consisting of 1330 images, is constructed by considering real construction site background, different gestures, varied angles and distances, and multi PPE classes. The comparison result among the eight models shows that YOLO v5x has the best mAP (86.55%), and YOLO v5s has the fastest speed (52 FPS) on GPU. The detection accuracy of helmet classes on blurred faces decreases by 7%, while there is no effect on other person and vest classes. And the proposed detectors trained on the CHV dataset have a superior performance compared to other deep learning approaches on the same datasets. The novel multiclass CHV dataset is open for public use.


Author(s):  
Gionatan Gallo ◽  
Francesco Di Rienzo ◽  
Pietro Ducange ◽  
Vincenzo Ferrari ◽  
Alessandro Tognetti ◽  
...  

2020 ◽  
Vol 5 (3) ◽  
pp. 94-101
Author(s):  
Victor Moraes ◽  
Willames De Albuquerque Soares ◽  
Bianca M. Vasconcelos ◽  
Tomi Zlatar ◽  
Béda Barkokébas Junior

The cost of world-wide accidents represent ≈4% of global Gross Domestic Product each year, which could be minimized or prevented by using adequate Personal Protective Equipment (PPE). Although wearing adequate PPE are mandatory in a number of occupations where workers are exposed to risks, experience show-us that supervision is necessary to ensuring it. The traditional supervision was proved not to be effective enough, making it necessary to turn on technological solutions. The objective of this work was to investigate if RFID technology is a feasible solution for monitoring the usage of PPE on construction sites, giving suggestions which tags to use and characteristics of RFID portals for field applications. The results of laboratory tests show that four antennas with correct disposition on the RFID portal are enough to ensure readability of the worker when passing through it. While six passive tags were tested, two of them were found to be ideal for this purpose: the Web Lite Wet Inlay with a rubber wrap due to its protective characteristics, and the SmartTrac Dog Bone due to its size. In conclusion, the RFID technology was found to be a feasible solution for automatically control the wearing of PPE on construction sites. There is a need for further research on construction sites.


Author(s):  
Engr. Jeferd E. Saong ◽  
Abigail L. Babaran ◽  
Glenn Dale A. Balaho

Construction sites generate high levels of dust typically from concrete, silica, asbestos, cement, wood, stone, and sand. Workers who are exposed to the said environment are faced with the risk of inhaling particulate materials that might lead to adverse respiratory problems. The lack of publication on the awareness of construction workers on the risk associated with silica dust exposure was the basis of the study. This study assessed the level of awareness of construction workers on the risk associated with silica dust exposure and the safety practices to minimize it. Purposive sampling was used in the selection of 65 respondents from different construction sites located in Baguio City, Philippines. A survey questionnaire containing four point Likert scales were used to determine the level of awareness on the health effects, mode of transmission, and sources of silica dust. The study further assessed the level of safety practices in mitigating the effects of silica dust exposure. The respondents were moderately aware (M=2.52) of the health effects, moderately aware (M=2.69) of the mode of transmission, and moderately aware (M=3.08) of the sources of silica dust. The results further showed that the respondents moderately practiced (M=2.84) activities to mitigate the health effects of silica dust exposure and moderately practiced (M=3.17) the use of personal protective equipment in the construction site. The results suggest that construction workers must be made more aware of the health effects of silica dust exposure and, mitigation activities and utilization of personal protective equipment must be strictly imposed in the construction site.


2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Andrew Ebekozien

PurposeThe frequent occurrence of hazards, especially on junior staff in developing countries, is a major setback on project delivery. This is because the safety of the construction workers' environment influences their performance. Although a range of literature has addressed safety measures on construction sites, how far is their compliance with personal protective equipment (PPE) on junior staff is yet to receive in-depth studies in Nigeria. Therefore, this study investigated the level of Nigerian construction companies' compliance and proffered possible solutions that intend to improve the implementation of PPE on junior staff.Design/methodology/approachThe data were collected via observation and face-to-face interviews among the selected companies' staff in Lagos and Abuja. The interview is to determine their perceptions regarding compliance with PPE on construction sites.FindingsFindings show that compliance with PPE on junior staff, especially the indigenous construction companies, is poor. This is because monitoring and enforcement are lax by government regulatory agencies. Also, findings show that many international construction companies ensure that junior workers obey site safety measures those mitigate the chance of hazard occurrence during construction as a policy.Research limitations/implicationsThis paper data collection is limited to Abuja and Lagos, and a phenomenology type of qualitative research was employed, but this does not weaken the robustness. Future research is needed to consider adopting a mixed-methods approach.Practical implicationsAs part of this paper's implications, findings recommended that the construction company's safety regulations and policies should be robust and enriched to mitigate site-related hazards via a framework or mechanism, but the government agencies/ministries need to give the enabling direction, strict monitoring and enforcement of PPE on junior staff. This paper intends to stir up the appropriate government authorities for possibly passing the Labour, Safety, Health and Welfare Bill 2012 (updated in 2016) Act into law.Originality/valueThis study demonstrates that the government agencies concern with approval and enforcement of construction site safety needs to reawaken to their responsibilities because of the lax implementation in many sites, especially in indigenous construction sites.


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