一种船用摄像机的主动红外系统设计与实现

发布时间：2018-01-24 14:32

本文关键词： 摄像夜视主动红外作用距离　出处：《激光与红外》2017年05期 　论文类型：期刊论文

【摘要】：根据夜视作用距离指标要求,设计了一种船用摄像机的主动红外照明系统。首先给出了系统整体架构,提出根据光电传感器最低感光照度进行夜视照明设计,并进行了公式推导;分析和设定了影响夜视作用距离的参数,在此基础上提出采用波长为0.85μm的红外LED阵列作为照明光源;针对镜头为电动变焦镜头而LED出光角度固定带来的不匹配问题,提出将LED阵列分四组并根据镜头焦距不同进行实时控制的解决方案,继而采用PIC单片机实现了系统控制功能。试验结果表明,该主动照明系统实用有效,在特定环境200 m距离内目标成像级别达到了B级,同时大幅提高了整体系统的寿命。
[Abstract]:According to the requirement of the range index of night vision, an active infrared illumination system of marine camera is designed. Firstly, the overall structure of the system is given, and the design of night vision illumination based on the minimum sensible illumination of photoelectric sensor is proposed. The formula is deduced. The parameters affecting the range of night vision are analyzed and set. Based on this, the infrared LED array with wavelength of 0.85 渭 m is proposed as the illumination source. Aiming at the mismatch caused by the fixed angle of LED for the electric zoom lens, this paper proposes a solution to divide the LED array into four groups and control it in real time according to the different focal length of the lens. Then the control function of the system is realized by using PIC single chip computer. The experimental results show that the active lighting system is practical and effective, and the imaging level of the target reaches B level within 200m distance in a specific environment. At the same time, the life of the whole system is greatly improved.
【作者单位】：中国船舶重工集团公司第七一八研究所;
【分类号】：TN22
【正文快照】： 1引言夜视技术是利用照明或夜间天空辐射对目标景物的照射、或利用目标自身热辐射,借助科学仪器观察可见光波段以外景物图像的技术[1]。根据工作原理的不同,分为被动夜视和主动夜视。某主动红外夜视摄像系统,工作于舰船甲板上,夜视作用距离是其重要技术指标,而影响夜视作用距

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