一体化红外热成像检测方法与系统

发布时间：2018-05-19 18:13

本文选题：红外热成像 + 一体化　；参考：《南京航空航天大学》2015年硕士论文

【摘要】：红外热成像检测技术是一种新兴的无损检测技术,由于其具有非接触、检测面积大、检测效率高等特点,目前已广泛应用于航空、航天、石化、电力等领域。随着应用的不断深入,原有的红外热成像检测系统已不能满足快速检测、自动检测、便携检测等要求,因此,研究设计操作简便、高速和可靠性高的一体化红外热成像检测方法与系统具有重要意义。本文在对红外热成像理论及其检测原理进行分析的基础上,提出了将激励器、红外热像仪以及嵌入式计算机进行结合的一体化红外热成像检测系统的设计方案,设计了基于热风激励和电磁感应激励的一体化红外热成像检测系统,根据激励器和红外热像仪可通过外部信号进行触发的特点,设计激励和红外视频采集同步进行。在嵌入式计算机的设计中,以研祥NANO-BT-YL1型工控主板为基础,设计了一台可触摸显示的红外图像处理显示主机,对主机的电池进行了电量检测和电池保护的设计。在红外热像仪专用软件的基础上采用Visual C++.NET进行二次开发,分别设计了文件操作模块、显示模块、同步模块、视频转换模块、边缘检测模块和参数设置模块,各模块以图形界面的形式进行交互工作。针对实际使用中的面和线激励两种扫描检测方式,分别研究了有效激励区域和图像处理重构的方法。通过反复的设计修改和实验调试,本文设计的系统同步化和系统软件的各个模块功能都能较好的实现,在便携式红外热成像检测系统的设计领域具有较好的参考和实际应用价值。
[Abstract]:Infrared thermal imaging is a new nondestructive testing technology. Because of its non-contact, large area and high detection efficiency, it has been widely used in aviation, aerospace, petrochemical, electric power and other fields. With the deepening of application, the original infrared thermal imaging detection system can not meet the requirements of rapid detection, automatic detection, portable detection and so on. The integrated infrared thermal imaging detection method and system with high speed and high reliability is of great significance. Based on the analysis of the theory of infrared thermal imaging and its detection principle, this paper puts forward the design scheme of an integrated infrared thermal imaging detection system which combines the exciter, infrared thermal imager and embedded computer. An integrated infrared thermal imaging detection system based on hot air excitation and electromagnetic induction excitation is designed. According to the characteristics that the exciter and infrared thermal imager can be triggered by external signals, the excitation and infrared video acquisition are designed simultaneously. In the design of embedded computer, an infrared image processing display host with touchable display is designed on the basis of Yanxiang NANO-BT-YL1 industrial control motherboard. The battery of the host is tested and the battery protection is designed. On the basis of the special software of infrared thermal imager, Visual C. Net is used for secondary development. File operation module, display module, synchronization module, video conversion module, edge detection module and parameter setting module are designed respectively. Each module interacts with each other in the form of a graphical interface. In this paper, the effective excitation region and image reconstruction method are studied respectively for the two scanning detection methods in practical use, surface and line excitation. Through repeated design modification and experimental debugging, the system synchronization and the function of each module of the system software designed in this paper can be realized better. It has good reference and practical application value in the design field of portable infrared thermal imaging detection system.
【学位授予单位】：南京航空航天大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TN219;TB302.5

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