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基于机器视觉与动作识别的变电站智能安监管控技术研究 被引量:1
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作者 翁凌雯 王栋 +2 位作者 潘丹 谢乾武 胡东升 《电子设计工程》 2023年第16期67-71,共5页
为了提升电力生产中变电站安全监控的智能化水平,基于机器视觉理论对视频信号中的动作识别方法进行了研究,提出了一种基于空间通道、局部时域通道及全时域通道的三通道卷积神经网络(CNN)算法。该算法在上述的3个通道中分别使用视频信号... 为了提升电力生产中变电站安全监控的智能化水平,基于机器视觉理论对视频信号中的动作识别方法进行了研究,提出了一种基于空间通道、局部时域通道及全时域通道的三通道卷积神经网络(CNN)算法。该算法在上述的3个通道中分别使用视频信号的静态帧图像、光流图像与差分亮度信息作为CNN的输入,实现了视频序列在时域和空域上的关联,并有效提升了现有算法的学习能力。在对该网络参数进行识别时,为避免训练数据集冗余,还引入了基于Min-Batch思想的误差反向传播算法,从而有效提升了模型的泛化能力。仿真过程中,在每个通道中均使用了5个卷积层、3个池化层及2个全连接层的CNN网络。结果表明,在开放数据集上网络的识别精度较现有的Two-Stream CNN网络可提升3.09%;而在实际的生产数据集上,网络识别精度较Two-Stream CNN能够提升5.17%。 展开更多
关键词 CNN 机器视觉 动作识别 变电站 安监管控
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Development of an Expert Model to Assess Falls from Height Hazards in Construction Sites
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作者 Carlo Argiolas Alessandro Carbonari Emanuela Quaquero 《Journal of Civil Engineering and Architecture》 2014年第5期517-528,共12页
This paper reports on the current state of an ongoing research project which is aimed at implementing intelligent models for hardly predictable hazard scenarios identification in construction sites. As any programmati... This paper reports on the current state of an ongoing research project which is aimed at implementing intelligent models for hardly predictable hazard scenarios identification in construction sites. As any programmatic actions cannot deal with the unpredictable nature of many risk dynamics, an attempt to improve the current approach for safety management in the construction industry will be presented in this paper. To this aim, the features offered by Bayesian networks have been exploited. The present research has led to the definition of a probabilistic model using elicitation techniques from subjective knowledge. This model, which might be meant as a reliable knowledge map about accident dynamics, showed that a relevant part of occurrences fall in the "hardly predictable hazards" category, which cannot be warded off by programmatic safety measures. Hence, more effort turned out to be needed in order to manage those hardly predictable hazardous scenarios. Consequently, further developments of this research project will focus on a real time monitoring system for the identification of unpredictable hazardous events in construction. 展开更多
关键词 Health and safety management risk assessment Bayesian networks job sites.
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