针对目前矿石检测技术准确性不高、效率低、实时性差以及环境适应性弱等问题,提出了一种基于香橙派的矿石识别系统。该系统利用高清摄像头实时捕获矿石图像,并通过香橙派Orange Pi 5B开发板搭载YOLOv4-tiny-tf2模型处理图像数据,实现矿...针对目前矿石检测技术准确性不高、效率低、实时性差以及环境适应性弱等问题,提出了一种基于香橙派的矿石识别系统。该系统利用高清摄像头实时捕获矿石图像,并通过香橙派Orange Pi 5B开发板搭载YOLOv4-tiny-tf2模型处理图像数据,实现矿石种类的高效准确识别。结果表明:轻量化的YOLOv4-tiny-tf2模型在不牺牲模型精度的情况下简化了其结构,更适合在配置较低的设备上部署,具备了较高的便携性;相较于传统的人工视觉检测和化学分析方法,基于香橙派Orange Pi 5B的矿石识别系统能够实时识别矿石,识别准确率达到93.75%,具有较高的可靠性和稳定性。展开更多
Three types of activators such as sodium hydroxide,calcium oxide and triethanolamine(TEA)are used to establish different activation environments to address the problems associated with the process of activating fly as...Three types of activators such as sodium hydroxide,calcium oxide and triethanolamine(TEA)are used to establish different activation environments to address the problems associated with the process of activating fly ash paste.We conducted mechanical tests and numerical simulations to understand the evolution of microstructure,and used environmental scanning electron microscopy(ESEM)and energy dispersive spectroscopy(EDS)techniques to analyze the microenvironments of the samples.The mechanical properties of fly ash paste under different activation conditions and the changes in the microstructure and composition were investigated.The results revealed that under conditions of low NaOH content(1%-3%),the strength of the sample increased significantly.When the content exceeded 4%,the rate of increase in strength decreased.Based on the results,the optimal NaOH content was identified,which was about 4%.A good activation effect,especially for short-term activation(3-7 d),was achieved using TEA under high doping conditions.The activation effect was poor for long-term strength after 28 days.The CaO content did not significantly affect the degree of activation achieved.The maximum effect was exerted when the content of CaO was 2%.The virtual cement and concrete testing laboratory(VCCTL)was used to simulate the hydration process,and the results revealed that the use of the three types of activators accelerated the formation of Ca(OH)_(2) in the system.The activators also corroded the surface of the fly ash particles,resulting in a pozzolanic reaction.The active substances in fly ash were released efficiently,and hydration was realized.The pores were filled with hydration products,and the microstructure changed to form a new frame of paste filling that helped improve the strength of fly ash paste.展开更多
文摘针对目前矿石检测技术准确性不高、效率低、实时性差以及环境适应性弱等问题,提出了一种基于香橙派的矿石识别系统。该系统利用高清摄像头实时捕获矿石图像,并通过香橙派Orange Pi 5B开发板搭载YOLOv4-tiny-tf2模型处理图像数据,实现矿石种类的高效准确识别。结果表明:轻量化的YOLOv4-tiny-tf2模型在不牺牲模型精度的情况下简化了其结构,更适合在配置较低的设备上部署,具备了较高的便携性;相较于传统的人工视觉检测和化学分析方法,基于香橙派Orange Pi 5B的矿石识别系统能够实时识别矿石,识别准确率达到93.75%,具有较高的可靠性和稳定性。
基金Supported by Yunnan Major Scientific and Technological Projects(No.202403AA080001)National Natural Science Foundation of China(No.52074137)Yunnan Fundamental Research Projects(No.202201AT070151)。
文摘Three types of activators such as sodium hydroxide,calcium oxide and triethanolamine(TEA)are used to establish different activation environments to address the problems associated with the process of activating fly ash paste.We conducted mechanical tests and numerical simulations to understand the evolution of microstructure,and used environmental scanning electron microscopy(ESEM)and energy dispersive spectroscopy(EDS)techniques to analyze the microenvironments of the samples.The mechanical properties of fly ash paste under different activation conditions and the changes in the microstructure and composition were investigated.The results revealed that under conditions of low NaOH content(1%-3%),the strength of the sample increased significantly.When the content exceeded 4%,the rate of increase in strength decreased.Based on the results,the optimal NaOH content was identified,which was about 4%.A good activation effect,especially for short-term activation(3-7 d),was achieved using TEA under high doping conditions.The activation effect was poor for long-term strength after 28 days.The CaO content did not significantly affect the degree of activation achieved.The maximum effect was exerted when the content of CaO was 2%.The virtual cement and concrete testing laboratory(VCCTL)was used to simulate the hydration process,and the results revealed that the use of the three types of activators accelerated the formation of Ca(OH)_(2) in the system.The activators also corroded the surface of the fly ash particles,resulting in a pozzolanic reaction.The active substances in fly ash were released efficiently,and hydration was realized.The pores were filled with hydration products,and the microstructure changed to form a new frame of paste filling that helped improve the strength of fly ash paste.
