在线自动聚焦红外热像仪系统设计
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摘要
红外热像仪具有全天候成像、环境适应性强、非接触测温等优点,被广泛应用于国民经济的各个领域。本文设计了一套可组网的自动聚焦红外热像仪系统。系统主要分为3个部分:(1)红外热像仪成像组件,包括可变焦红外成像光学镜头和非制冷红外焦平面探测器;(2)自动聚焦闭环控制组件,包括FPGA图像评价单元、电机反馈控制单元和聚焦搜索算法;(3)红外热像仪网络化监控嵌入式组件,包含视频压缩编码、私有网络控制传输协议、OSD(on-screen display)温度叠加等功能。该系统可广泛应用于港口码头、石油化工、危险品仓储等领域,并将逐步成为这些领域事故预判和报警的重要安全监控设备。
An infrared thermal imager has the advantages of all-weather imaging, environmental adaptability,and noncontact temperature measurement. It has been widely used in various fields of the national government. An auto-focusing infrared thermal imager online system was designed for this paper. The system is mainly divided into three parts: 1)infrared thermal imager components, including zoom lens and imaging infrared uncooled infrared focal plane detector; 2)automatic focusing closed-loop control components, including FPGA image evaluation unit with feedback control of the motor unit and a focusing search algorithm; and 3)the embedded network monitoring component containing the video compression encoding, private network control transmission protocol, and OSD(on-screen display) temperature superposition function. The system can be widely used in ports, petrochemical, dangerous goods warehousing and other fields, and will gradually become an important part of the safety monitoring equipment for accident prediction and awareness in these areas.
An infrared thermal imager has the advantages of all-weather imaging, environmental adaptability,and noncontact temperature measurement. It has been widely used in various fields of the national government. An auto-focusing infrared thermal imager online system was designed for this paper. The system is mainly divided into three parts: 1)infrared thermal imager components, including zoom lens and imaging infrared uncooled infrared focal plane detector; 2)automatic focusing closed-loop control components, including FPGA image evaluation unit with feedback control of the motor unit and a focusing search algorithm; and 3)the embedded network monitoring component containing the video compression encoding, private network control transmission protocol, and OSD(on-screen display) temperature superposition function. The system can be widely used in ports, petrochemical, dangerous goods warehousing and other fields, and will gradually become an important part of the safety monitoring equipment for accident prediction and awareness in these areas.
引文
[1]何丽.走向新世纪的红外热成像技术[J].激光与光电子学进展,2002(12):48-51.HE Li.Infrared thermal imaging technology towards the new century[J].Laser and Optoelectronics Progress,2002(12):48-51.
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[7]卞宏友,韩双隆,李英,等.感应加热参数对激光沉积修复基板温度场的影响[J].激光与光电子学进展,2014,51(11):167-173.BIAN Hongyou,HAN Shuanglong,LI Ying.Effect of different induction heating parameters on the substrate temperature field during laser deposition repair[J].Laser and Optoelectronics Progress,2014,51(11):167-173.
[8]左月,刘娜,高福生.红外热像技术的工作原理及在轻工行业的应用[J].轻工标准与质量,2017(1):49-50.ZUO Yue,LIU Na,GAO Fusheng.The working principle of infrared thermal imaging technology and its application in light industry[J].Standard and Quality of Light Industry,2017(1):49-50.
[9]夏浩,胡新丽,唐辉明,等.红外热像技术在滑坡物理模型试验中的应用[J].岩土力学,2017,38(1):291-299.XIA Hao,HU Xinli,TANG Huiming.Application of infrared thermal radiation imaging technology to landslide physical model test[J].Rock and Soil Mechanics,2017,38(1):291-299.
[2]冯涛,金伟其,司俊杰,等.非制冷红外焦平面探测器及其技术发展动态[J].红外技术,2015,37(3):177-184.FENG Tao,JIN Weiqi,SI Junjie.Uncooled infrared FPA-a review and forecast[J].Infrared Technology,2015,37(3):177-184.
[3]刘凤杰.红外热成像系统在高速公路监控系统中的应用[J].交通标准化,2010,227:148-150.LIU Fengjie.Application of infrared thermal imaging system in highway supervision[J].Transportation Standardization,2010,227:148-150.
[4]梁文远.基于红外热成像的夜间辅助驾驶系统[D].广州:华南理工大学,2013.LIANG Wenyuan.Night driver assistance system base on infrared thermal imaging[D].Guangzhou:South China University of Technology,2013.
[5]刘涛,张化宁,张锋军.红外热成像技术在矿井设备状态监测中的应用[J].陕西煤炭,2014,33(5):91-93.LIU Tao,ZHANG Huaning,ZHANG Fengjun.Application of infrared thermal imaging technology in mine equipment condition monitoring[J].Shaanxi Coal,2014,33(5):91-93.
[6]刘永翔,张健,杜永成.弥散介质遮蔽表面的红外成像测温方法[J].激光与光电子学进展,2016,53(9):135-140.LIU Yongxiang,ZHANG Jian,DU Yongcheng.Infrared imaging temperature measurement for a shielded surface by diffuse medium[J].Laser and Optoelectronics Progress,2016,53(9):135-140.
[7]卞宏友,韩双隆,李英,等.感应加热参数对激光沉积修复基板温度场的影响[J].激光与光电子学进展,2014,51(11):167-173.BIAN Hongyou,HAN Shuanglong,LI Ying.Effect of different induction heating parameters on the substrate temperature field during laser deposition repair[J].Laser and Optoelectronics Progress,2014,51(11):167-173.
[8]左月,刘娜,高福生.红外热像技术的工作原理及在轻工行业的应用[J].轻工标准与质量,2017(1):49-50.ZUO Yue,LIU Na,GAO Fusheng.The working principle of infrared thermal imaging technology and its application in light industry[J].Standard and Quality of Light Industry,2017(1):49-50.
[9]夏浩,胡新丽,唐辉明,等.红外热像技术在滑坡物理模型试验中的应用[J].岩土力学,2017,38(1):291-299.XIA Hao,HU Xinli,TANG Huiming.Application of infrared thermal radiation imaging technology to landslide physical model test[J].Rock and Soil Mechanics,2017,38(1):291-299.