Article(id=1149738773002498275, tenantId=1146029695717560320, journalId=1146031787341344770, issueId=1149738762382524507, articleNumber=1003-3033(2024)07-0038-06, orderNo=null, doi=10.16265/j.cnki.issn1003-3033.2024.07.2030, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1704643200000, receivedDateStr=2024-01-08, revisedDate=1712937600000, revisedDateStr=2024-04-13, acceptedDate=null, acceptedDateStr=null, onlineDate=1752048684596, onlineDateStr=2025-07-09, pubDate=1722096000000, pubDateStr=2024-07-28, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1752048684596, onlineIssueDateStr=2025-07-09, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1752048684596, creator=13701087609, updateTime=1752048684596, updator=13701087609, issue=Issue{id=1149738762382524507, tenantId=1146029695717560320, journalId=1146031787341344770, year='2024', volume='34', issue='7', pageStart='1', pageEnd='252', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=0, createTime=1752048682065, creator=13701087609, updateTime=1757316437713, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1171833331021824745, tenantId=1146029695717560320, journalId=1146031787341344770, issueId=1149738762382524507, language=EN, specialIssueTitle=, coverIllustrator=, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1171833331021824746, tenantId=1146029695717560320, journalId=1146031787341344770, issueId=1149738762382524507, language=CN, specialIssueTitle=, coverIllustrator=, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=38, endPage=43, ext={EN=ArticleExt(id=1149738773203824868, articleId=1149738773002498275, tenantId=1146029695717560320, journalId=1146031787341344770, language=EN, title=Industrial site unsafe behavior detection based on improved YOLOv5, columnId=1149733271128420907, journalTitle=China Safety Science Journal, columnName=Safety social science and safety management, runingTitle=null, highlight=null, articleAbstract=

In order to accurately identify unsafe behaviors of personnel in complex industrial sites and reduce the occurrence of safety accidents,an improved YOLOv5 unsafe behavior detection model was proposed. Firstly,an attention mechanism was introduced in the backbone of YOLOv5 to enhance the sensitivity of convolutional networks to unsafe behavior features. Secondly,enriching the number of training samples through image geometric transformation and pixel-level processing enhanced the generalization ability of the detection model in different industrial environments. Then,the detection model was distilled,and the network structure parameters were optimized to accelerate the training of the mode. Finally,the model was trained and iterated 200 times to simulate three types of industrial sites: lifting slings,robot-automated production lines,and operating rooms. It detected whether personnel were wearing safety helmets,work clothes and working in safe areas,and determined the level of danger based on their behavior to ascertain whether they were working safely. The results show that the model can detect 12 types of unsafe behaviors of personnel in complex industrial environments,such as dim light,lighting,and occlusion. The accuracy on the unsafe behavior test set is 98.6%,the recall rate is 99.2%,and the average accuracy is 97.58%.

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为准确识别复杂工业现场人员的不安全行为,减少安全事故的发生,提出一种改进的YOLOv5不安全行为检测模型。首先,在YOLOv5的backbone部分引入注意力机制,提高卷积网络对不安全行为特征的敏感度;其次,通过图像几何变换和像素级处理丰富训练样本数量,提升检测模型在不同工业环境中的泛化能力;然后,蒸馏检测模型并优化网络结构参数来加速模型的训练;最后,将模型训练迭代200次,模拟起重吊索、机器人自动化产线和操作间3类工业现场,检测人员是否穿戴安全帽、工作服以及是否在安全区域工作,并依据行为划定危险等级,判定人员是否安全生产。结果表明:该模型能检测昏暗、光照和遮挡等多类复杂工业环境下人员的12种不安全行为,且在不安全行为测试集上精确率为98.6%,召回率为99.2%,平均精度为97.58%。

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纪执安 (1994—),男,河北沧州人,硕士,工程师,主要从事机器学习、智能检测和图像处理等方面的工作。E-mail:

周云奕 工程师;

张玉媛 工程师;

郭新然 工程师;

石 坤 研究员

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IEEE International Conference on Computer Vision, 2017: 2736-2744., articleTitle=Learning efficient convolutional networks through network slimming, refAbstract=null)], funds=[Fund(id=1168186545862353344, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149738773002498275, awardId=2023MK208, language=CN, fundingSource=国家市场监督管理总局科技计划项目(2023MK208), fundOrder=null, country=null), Fund(id=1168186545921073601, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149738773002498275, awardId=2023youth07, language=CN, fundingSource=中国特种设备检测研究院青年基金资助(2023youth07), fundOrder=null, country=null)], companyList=[AuthorCompany(id=1168186541638689164, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149738773002498275, xref=null, ext=[AuthorCompanyExt(id=1168186541651272077, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149738773002498275, companyId=1168186541638689164, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=China Special Equipment Inspection and Research Institute,Beijing 100029,China), AuthorCompanyExt(id=1168186541655466382, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149738773002498275, companyId=1168186541638689164, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=中国特种设备检测研究院,北京 100029)])], figs=[ArticleFig(id=1168186544465650098, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149738773002498275, language=EN, label=Fig.1, caption=YOLOv5 model structure, figureFileSmall=iPZm+auYvafH46znC9Qmew==, figureFileBig=2jaco3Sf+kSiE+MXbJ6N8w==, tableContent=null), ArticleFig(id=1168186544545341875, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149738773002498275, language=CN, label=图1, caption=YOLOv5模型改进, figureFileSmall=iPZm+auYvafH46znC9Qmew==, figureFileBig=2jaco3Sf+kSiE+MXbJ6N8w==, tableContent=null), ArticleFig(id=1168186544692142516, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149738773002498275, language=EN, label=Fig.2, caption=Improved YOLOv5 model of incorporating CBAM, figureFileSmall=zfO92kP0fOgITRFdLfY85w==, figureFileBig=Uwcx429jKyi6YfgTg7O/HA==, tableContent=null), ArticleFig(id=1168186544767639989, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149738773002498275, language=CN, label=图2, caption=引入CBAM的YOLOv5改进模型, figureFileSmall=zfO92kP0fOgITRFdLfY85w==, figureFileBig=Uwcx429jKyi6YfgTg7O/HA==, tableContent=null), ArticleFig(id=1168186544834748854, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149738773002498275, language=EN, label=Fig.3, caption=Training set extension, figureFileSmall=69NM73shAQhnJxAOzIdqgQ==, figureFileBig=qDtDTWOSx2EBH0b0n/z0Lw==, tableContent=null), ArticleFig(id=1168186544918634935, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149738773002498275, language=CN, label=图3, caption=训练集扩充, figureFileSmall=69NM73shAQhnJxAOzIdqgQ==, figureFileBig=qDtDTWOSx2EBH0b0n/z0Lw==, tableContent=null), ArticleFig(id=1168186545065435576, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149738773002498275, language=EN, label=Fig.4, caption=Comparison of model performance indicators, figureFileSmall=GhV8yF1rcgw6fA+VSxCMyw==, figureFileBig=fvt3mbpEGzS892CJ7o26Jg==, tableContent=null), ArticleFig(id=1168186545161904569, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149738773002498275, language=CN, label=图4, caption=模型性能指标对比, figureFileSmall=GhV8yF1rcgw6fA+VSxCMyw==, figureFileBig=fvt3mbpEGzS892CJ7o26Jg==, tableContent=null), ArticleFig(id=1168186545254179258, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149738773002498275, language=EN, label=Fig.5, caption=Unsafe behavior detection in different industrial environments, figureFileSmall=w/EJjtaNuxTueCpkASZIUA==, figureFileBig=Luk2cHb1SEVi/jNY7TOPCA==, tableContent=null), ArticleFig(id=1168186545375814075, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149738773002498275, language=CN, label=图5, caption=不同工业环境下的不安全行为检测, figureFileSmall=w/EJjtaNuxTueCpkASZIUA==, figureFileBig=Luk2cHb1SEVi/jNY7TOPCA==, tableContent=null), ArticleFig(id=1168186545472283068, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149738773002498275, language=EN, label=Table 1, caption=

Unsafe behavior label classification

, figureFileSmall=null, figureFileBig=null, tableContent=
应用场景 不安全行为 危险系数 不安全行为标签
起重吊索 戴安全帽、穿工作服 安全 helmet,smock,safe
戴安全帽、无工作服 危险I helmet,no_smock,dangerousI
无安全帽、穿工作服 危险I no_helmet,smock,dangerousI
无安全帽、无工作服 危险II no_helmet,no_smock,dangerousII
机器人自
动化产线
安全区域、穿工作服 安全 safe_area,smock,safe
安全区域、无工作服 危险I safe_area,no_smock,dangerousI
危险区域、穿工作服 危险I dangerous_area,smock,dangerousI
危险区域、无工作服 危险II dangerous_area,no_smock,dangerousII
工厂操作间 安全区域、工作服 安全 safe_area,smock,safe
安全区域、无工作服 危险I safe_area,no_smock,dangerousI
危险区域,穿工作服 危险I dangerous_area,smock,dangerousI
危险区域、无工作服 危险II dangerous_area,no_smock,dangerousII
), ArticleFig(id=1168186545598112189, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149738773002498275, language=CN, label=表1, caption=

不安全行为标签分类

, figureFileSmall=null, figureFileBig=null, tableContent=
应用场景 不安全行为 危险系数 不安全行为标签
起重吊索 戴安全帽、穿工作服 安全 helmet,smock,safe
戴安全帽、无工作服 危险I helmet,no_smock,dangerousI
无安全帽、穿工作服 危险I no_helmet,smock,dangerousI
无安全帽、无工作服 危险II no_helmet,no_smock,dangerousII
机器人自
动化产线
安全区域、穿工作服 安全 safe_area,smock,safe
安全区域、无工作服 危险I safe_area,no_smock,dangerousI
危险区域、穿工作服 危险I dangerous_area,smock,dangerousI
危险区域、无工作服 危险II dangerous_area,no_smock,dangerousII
工厂操作间 安全区域、工作服 安全 safe_area,smock,safe
安全区域、无工作服 危险I safe_area,no_smock,dangerousI
危险区域,穿工作服 危险I dangerous_area,smock,dangerousI
危险区域、无工作服 危险II dangerous_area,no_smock,dangerousII
), ArticleFig(id=1168186545673609662, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149738773002498275, language=EN, label=Table 2, caption=

Average accuracy of different algorithms

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现有识别模型算法 mAP@0.5%
Faster R-CNN 92.21
YOLOv4 94.55
SSD 91.17
RPAN 92.97
TSN 93.15
YOLOv5s 95.36
改进后的YOLOv5 97.58
), ArticleFig(id=1168186545728135615, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149738773002498275, language=CN, label=表2, caption=

不同算法平均精度

, figureFileSmall=null, figureFileBig=null, tableContent=
现有识别模型算法 mAP@0.5%
Faster R-CNN 92.21
YOLOv4 94.55
SSD 91.17
RPAN 92.97
TSN 93.15
YOLOv5s 95.36
改进后的YOLOv5 97.58
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基于改进YOLOv5的工业现场不安全行为检测
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纪执安 , 周云奕 , 张玉媛 , 郭新然 , 石坤
中国安全科学学报 | 安全社会科学与安全管理 2024,34(7): 38-43
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中国安全科学学报 | 安全社会科学与安全管理 2024, 34(7): 38-43
基于改进YOLOv5的工业现场不安全行为检测
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纪执安 , 周云奕, 张玉媛, 郭新然, 石坤
作者信息
  • 中国特种设备检测研究院,北京 100029
  • 纪执安 (1994—),男,河北沧州人,硕士,工程师,主要从事机器学习、智能检测和图像处理等方面的工作。E-mail:

    周云奕 工程师;

    张玉媛 工程师;

    郭新然 工程师;

    石 坤 研究员

Industrial site unsafe behavior detection based on improved YOLOv5
Zhi'an JI , Yunyi ZHOU, Yuyuan ZHANG, Xinran GUO, Kun SHI
Affiliations
  • China Special Equipment Inspection and Research Institute,Beijing 100029,China
出版时间: 2024-07-28 doi: 10.16265/j.cnki.issn1003-3033.2024.07.2030
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为准确识别复杂工业现场人员的不安全行为,减少安全事故的发生,提出一种改进的YOLOv5不安全行为检测模型。首先,在YOLOv5的backbone部分引入注意力机制,提高卷积网络对不安全行为特征的敏感度;其次,通过图像几何变换和像素级处理丰富训练样本数量,提升检测模型在不同工业环境中的泛化能力;然后,蒸馏检测模型并优化网络结构参数来加速模型的训练;最后,将模型训练迭代200次,模拟起重吊索、机器人自动化产线和操作间3类工业现场,检测人员是否穿戴安全帽、工作服以及是否在安全区域工作,并依据行为划定危险等级,判定人员是否安全生产。结果表明:该模型能检测昏暗、光照和遮挡等多类复杂工业环境下人员的12种不安全行为,且在不安全行为测试集上精确率为98.6%,召回率为99.2%,平均精度为97.58%。

YOLOv5  /  工业现场  /  不安全行为  /  检测模型  /  注意力机制

In order to accurately identify unsafe behaviors of personnel in complex industrial sites and reduce the occurrence of safety accidents,an improved YOLOv5 unsafe behavior detection model was proposed. Firstly,an attention mechanism was introduced in the backbone of YOLOv5 to enhance the sensitivity of convolutional networks to unsafe behavior features. Secondly,enriching the number of training samples through image geometric transformation and pixel-level processing enhanced the generalization ability of the detection model in different industrial environments. Then,the detection model was distilled,and the network structure parameters were optimized to accelerate the training of the mode. Finally,the model was trained and iterated 200 times to simulate three types of industrial sites: lifting slings,robot-automated production lines,and operating rooms. It detected whether personnel were wearing safety helmets,work clothes and working in safe areas,and determined the level of danger based on their behavior to ascertain whether they were working safely. The results show that the model can detect 12 types of unsafe behaviors of personnel in complex industrial environments,such as dim light,lighting,and occlusion. The accuracy on the unsafe behavior test set is 98.6%,the recall rate is 99.2%,and the average accuracy is 97.58%.

YOLOv5  /  industrial site  /  unsafe behavior  /  detection model  /  attention module
纪执安, 周云奕, 张玉媛, 郭新然, 石坤. 基于改进YOLOv5的工业现场不安全行为检测. 中国安全科学学报, 2024 , 34 (7) : 38 -43 . DOI: 10.16265/j.cnki.issn1003-3033.2024.07.2030
Zhi'an JI, Yunyi ZHOU, Yuyuan ZHANG, Xinran GUO, Kun SHI. Industrial site unsafe behavior detection based on improved YOLOv5[J]. China Safety Science Journal, 2024 , 34 (7) : 38 -43 . DOI: 10.16265/j.cnki.issn1003-3033.2024.07.2030
随着科学技术的迅猛发展,传统手工制造行业已逐渐被现代高精尖自动化产业所替代[1],这使得工业现场存在较多机器人、快速传送带和大重型起重机等[2],工作人员若不规范穿戴安全帽、工作服,或者非法闯入机器运行区域,可能会引发重大事故,危及个人生命安全。因此,检测复杂工业现场下人员的不安全行为显得十分必要[3-4]
行为检测是计算机视觉领域研究的热门课题之一[5],早在1977年,计算机视觉理论就已被提出。经过几十年发展,计算机视觉技术广泛应用于视频监控、自动驾驶和工业制造等领域[6-7]。近几年,机器学习的加入,让行为检测更具智能化[8-9]。DALAL等[10]提出方向梯度直方图 (Histogram Of Oriented Gradient,HOG)特征提取方法,通过支持向量机(Support Vector Machines,SVM)分类器检测人员行为。HUNG等[11]将迁移学习方法应用于VGG19、Inception_V3和InceptionResnet_V2等3个预训练模型,以此识别工业现场中的人员不安全行为。PATWAL等[12]使用轻量级卷积网络模型检测人员行为,并在化工安全生产上得到应用。2016年,JOSEPH等[13]基于直接回归思路,提出YOLO(You Only Look Once)算法,该算法采用端到端的思想,将检测任务转化为单一的回归问题,提升了检测速度,被广泛应用于工业现场的不安全行为检测。
综上,现有研究在不安全行为检测方面多针对单类不安全行为,且不适应复杂工业现场的不安全行为检测。鉴于此,笔者拟改进YOLOv5算法,在原算法网络结构上融入双通道注意力机制和图像几何变化概念,使模型更聚焦于不安全行为关键特征,提高模型的特征表达能力。并基于改进后的模型,检测机器人自动化产线、起重吊索和操作间3类工业现场下的不安全行为,以期为复杂工业现场的事故预防提供新思路。
为使图像具有稳定性,减少噪声,在采集前固定相机,基于不同场景,改变不同拍摄角度,后经过图像帧间处理,确定不安全行为数据集为5 000张。主要涉及的工业场景包括起重吊索、机器人自动化产线、操作间等。并根据特定场景及人员行为类型,如是否戴安全帽、穿工作服,以及是否在安全区域,划定不同危险等级,设定12类不安全行为标签,见表1表1中,系数越高表示越危险。
在YOLOv4结构上改进YOLOv5模型。相较于YOLOv4,新增C3模块,C3由2个卷积和1个残差网络构成,此模块能减少机器学习训练中的梯度消散问题,提高模型特征表达能力。从结构上来说,YOLOv5由3个主干网络组成,即backbone、neck和head,如图1所示。backbone网络负责目标的初步特征提取。neck网络通过上下采样把浅层的图像特征和更深层的语义特征相结合,并传递给预测网络。head网络主要利用二元交叉熵损失函数回归预测输入图像。作为单阶段目标检测算法,YOLOv5不需要像双阶段检测算法,事先提取图像中的目标作为候选区域,再从候选区域中进行分类识别,而是直接生成检测目标的坐标和类别信息,这样大大提高了检测速度,更有利于在工程上的应用。
整个YOLOv5模型共有5个版本,包括YOLOv5s、YOLOv5m、YOLOv5l、YOLOv5x和YOLOv5n。每个版本基础构造一致,差别在于参数depth_multiple和width_multiple设置不一,各版本适用于不同场景的速度和精度要求。为将模型方便部署在服务器上,选用深度较浅、检测速度较快的YOLOv5s作为基础模型。
注意力机制[14]与人类的选择性行为相似,其主要思想是在丰富的目标特征中选择更为重要的关键信息。在机器学习中,注意力机制主要应用于图像处理、数字和文本信息。在backbone中运用通道注意力和空间注意力相结合的方式改进模型结构。通道注意力模块关注于不安全行为特征图的通道维度,即不同通道上特征的重要性。通过计算每个通道的权重,加权特征图,从而增强对重要通道特征的关注,提高不安全行为特征的表达性。
空间注意力模块则关注于不安全行为特征图的空间维度,即不同位置上的特征重要性。通过计算特征图中每个位置的权重,突出重点空间区域,从而帮助模型关注到图像中最为重要的部分。空间注意力模块有助于模型捕捉不安全行为图像中的细节和关键信息,提高模型对空间信息的敏感性。
2种注意力模块相结合,有利于加强各卷积层的数据信息联系,平衡各模块检测数据转换,减小内存消耗和信息过载问题,使模型更聚焦于不安全行为目标的关键特征,提高检测模型的特征表达能力,引入卷积注意力模块(Convolutional Block Attention Module,CBAM)的YOLOv5改进模型,如图2所示。
样本数量对于模型训练起着很大的作用,但在实际应用中,由于外界条件,不能采集各种复杂工业场景中的人员行为,因此,通过图像几何变换或像素级处理进行训练集扩充。如旋转、拼接、灰度化、增加白噪声等,将原有采集图片扩充到12 000张,以此来增加不安全行为的训练样本数量[15],训练集扩充如图3所示。同时,为适应YOLOv5的模型训练,将采集样本调整到640×640大小的图片,并通过Labelimage软件标注图像数据。划分机器人自动化产线、起重吊索和操作间3类不同场景,分别进行模型训练。
YOLOv5模型数据量大,结构复杂,卷积层较多。这样的结构是模型针对不同检测环境要求所设计。文中只针对自动化产线、起重吊索和操作间 3类不同场景工业场景,因此,对模型蒸馏,可加速模型的训练,同时也能提高目标检测速度。为此,引入贡献因子γ[16]来调节neck网络中的归一化层(Batch Normalization,BN),裁剪此模块中卷积贡献较小的结构。
Z ^ = Z I - μ β σ β 2 + ε
Z O = γ Z ^ + β
式中: Z ^为BN层的过程预测值;ZIZO为BN层的输入、输出信息; ε为BN层的正则化项; μ βσβ为当前层mini-batch的平均值和方差; β为缩放和偏移的仿射变换参数; γ为BN层的贡献因子。在进行数据归一化时,当 γ很小时,表示当前通道对模型训练影响小,可以裁掉。
不安全行为检测模型在中央处理器为Intel Core i7-5960X,图像处理器为 NIVIDIA GeForce GTX 1080 Ti,运行内存为32 GB随机存取存储器(Random Access Memory,RAM)的计算机上进行训练。设置训练批量大小为16,训练次数为200次,学习率设置为0.1%。
检测模型的性能评价指标如下:精确率P、召回率R和平均精度均值(mean Average Precision,mAP)。P表示模型只识别相关目标的能力,准确检测到所有数据结果的百分比,其表示如下:
P = T P T P + F P
式中:TP为精确检测到的正样本数量;FP为错误检测到的负样本数量。
R表示在积极输入训练样本的情况下作出最理想预测的准确性,指模型能够很好地检测到目标,定义如下式:
R = T P T P + F N
式中FN为未检测到的正样本数量。
mAP表示检测模型在多分类任务中的整体性能。在计算mAP时,需独立计算每种不安全行为类别的平均精度(Average Precision,AP),后对所有不安全行为分类的AP值进行汇总并求取平均值。mAP@0.5表示交并比(Intersection over Union,IoU)相除等于0.5时的平均精度。下式适用于对所有大场景的检测效果评价。
m A P = 1 N i = 1 N P ( i )
式中:P(i)为每种不安全行为检测的精度;N为不安全行为类别的总数。
模型性能指标对比如图4所示。由图4a可知:随着训练次数的增加,原模型和改进模型在迭代22次时,精确率均是迅速收敛上升,在训练100次时,2模型精确率变化趋于平衡,此时,改进后的模型精确率为98.6%,原模型为96.3%,即改进后模型的精确率提升2.4%。由图4b可知:原模型和改进模型在训练迭代130次时,召回率变化趋缓,此时,改进YOLOv5模型的召回率为99.2%,原模型的召回率为95.9%,改进后的YOLOv5模型较原模型,召回率提升3.4%。综合模型检测的精确率和召回率,改进的YOLOv5模型整体性能比原模型有所提升。
为进一步分析不安全行为检测模型的性能,选取现有经典行为识别算法,快速区域卷积网络(Fast Region-Convolutional Neural Network,Faster R-CNN)、 YOLOv4、单步多框检测器(Single Shot MultiBox Detector,SSD)、递归姿态注意力网络(Recurrent Pose-Attention Network,RPAN)、时段网络(Temporal Segment Networks,TSN)和YOLOv5s进行对比,不同算法平均精度见表2,评价指标为mAP。在3类工业场景下,影响目标检测的因素众多,如起重机械、六轴自由度机械臂、栅栏、安全线和复杂背景,因此,对算法检测要求极高。在众多算法中,改进后的YOLOv5模型的平均精度为97.58%,相较于现有Faster R-CNN算法提高5.8%,相比于YOLOv4算法提高3.2%,相较于SSD算法提高7.1%,相比于RPAN提高4.9%,与TSN相比提高4.8%,相比于YOLOv5s原始算法提高2.3%,在众多算法中,改进后的YOLOv5算法识别效果最好。
模拟起重吊索、机器人自动化产线和工厂操作间3类工业场景,不同工业环境下的不安全行为检测如图5所示。针对人员穿工作服、戴安全帽和所属工作区域,划分危险等级程度。在图5a左图中,涉及光照和背景干扰,工作人员正在借助吊索转移某重物,人员应该戴安全帽和穿工作服,此场景下,仅有1位作业人员穿戴符合规范,模型检测结果为helmet,smock,safe;有1人无安全帽,只穿戴工作服,危险程度等级为I,检测结果为no_helmet,smock,dangerousI;还有1位人员没有做任何安全防护,危险程等级为II,检测为no_helmet,no_smock,dangerousII。图5a右图中也仅有1人符合安全操作规范,各目标检测置信度均在95%以上。在图5b机器人自动化产线场景下,涉及昏暗和遮挡干扰。图5a中,人员需要穿戴工作服且应在指定安全区域操作,仅2人符合安全规定,检测为safe_area,smock,safe,其他人员均在不同程度上有不安全行为。在图5c操作间2个场景下,涉及昏暗干扰。图5c定义了工作安全区域和危险区域,有4人符合安全规定,既穿工作服,又在安全区域活动,检测结果为safe_area,smock,safe,还有2人检测为dangerous_area,no_smock,dangerousII,该场景标签检测置信度均为97%。
1) 通过优化YOLOv5算法结构,实现对复杂工业现场12类不安全行为的检测。文中模型具有实时性、多类行为识别和复杂环境适应性等特点,为工业现场的安全管理提供强有力的技术支持和保障。
2) 复杂环境下的不安全行为检测需要结合设备状态和外部环境信息,未来可融合多源数据分析作业人员不安全行为。
3) 不安全行为涉及面广,文中检测模型针对工作服、安全帽和危险、安全区域进行检测,没有对人员摔倒、蹦跳等行为训练,以后需扩充模型数据量并结合姿态信息,识别更多的不安全行为。
  • 国家市场监督管理总局科技计划项目(2023MK208)
  • 中国特种设备检测研究院青年基金资助(2023youth07)
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2024年第34卷第7期
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doi: 10.16265/j.cnki.issn1003-3033.2024.07.2030
  • 接收时间:2024-01-08
  • 首发时间:2025-07-09
  • 出版时间:2024-07-28
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  • 收稿日期:2024-01-08
  • 修回日期:2024-04-13
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国家市场监督管理总局科技计划项目(2023MK208)
中国特种设备检测研究院青年基金资助(2023youth07)
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    中国特种设备检测研究院,北京 100029
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2种不同金属材料的力学参数

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鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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