红外热像仪整机运动参数分析及测试系统研究

发布时间：2018-04-09 08:19

本文选题：红外热像仪　切入点：运动参数分析　出处：《北京交通大学》2015年硕士论文

【摘要】：当前,红外热像仪测试系统主要针对可变温差、等效温差等方面的研究,关于整机运动参数的测试系统绝大多数的研究仍停留在实验室阶段,本文基于红外热像仪的工作原理,研发一种能够测量红外热像仪运动参数的设备,有效的弥补国内在这一领域的不足。论文主要研究内容如下： 1、对红外热像仪的国内外现状进行研究,并根据红外热像仪的发展对其测试系统的国内外现状进行研究。 2、分析红外热像仪的基本工作原理,对红外热像仪进行建模,根据热像仪的测试要求,提出测试方案,建立测试系统的模型。 3、针对要测量的内容,设计测量方案,选定测量方法并进传感器的选型。 4、对红外热像仪进行力学分析。对连续变焦组件和回扫组件进行动力学分析,推导出拉格朗日方程,得出其运动速度和加速度的关系,为测试提供了理论基础；对运动镜片和回扫片进行模态分析,为测量时避开共振区提供依据；对微扫组件进行动力学分析,建立动力学方程,得到固有频率,进行模态分析,得其固有频率,两者对比确保正确性,同时还对微扫组件的最大弱截面处进行静力学分析和仿真分析,计算出应力最大值并得到其应力云图,验证它的可靠性；对滚珠丝杠副的滑块进行模态分析,求得其固有频率,为测量时避开共振区提供依据,对其最大应力处滚珠进行应力分析,得到应力云图,验证其可靠性。 5、明确测试软件的功能需求,设计软件思想和处理流程,并进行总体结构设计,用c#编程测试软件,完成界面和功能的实现,并进行软硬件联调,完成测试。
[Abstract]:A kind of equipment which can measure the motion parameters of infrared thermal imager is developed, which can effectively make up for the deficiency in this field.The main contents of this thesis are as follows:1. The present situation of infrared thermal imager at home and abroad is studied, and the present situation of its testing system is studied according to the development of infrared thermal imager.2. The basic working principle of the infrared thermal imager is analyzed, and the model of the infrared thermal imager is established. According to the test requirements of the infrared thermal imager, the test scheme is put forward, and the model of the test system is established.3. According to the content to be measured, the measurement scheme is designed, and the selection of measurement method and sensor is selected.4. Mechanical analysis of infrared thermal imager.The dynamic analysis of the continuous zoom assembly and the flyback assembly is carried out, the Lagrange equation is derived, and the relationship between the velocity and the acceleration is obtained, which provides a theoretical basis for the testing.In order to avoid the resonance region, the dynamic analysis of the micro-sweep assembly, the establishment of the dynamic equation, the natural frequency, the modal analysis, and the comparison between the two to ensure the correctness,At the same time, static analysis and simulation analysis of the maximum weak cross section of the micro-sweep assembly are carried out, the maximum stress is calculated and its stress cloud diagram is obtained to verify its reliability, and the natural frequency of the slider of the ball screw pair is obtained by modal analysis.In order to avoid the resonance region, the stress analysis of the ball at the maximum stress is carried out, and the stress cloud diagram is obtained to verify its reliability.5. Make clear the function requirement of the test software, design the software idea and process flow, and carry on the overall structure design, program the test software with c#, complete the realization of the interface and function, and carry on the hardware and software combination, complete the test
【学位授予单位】：北京交通大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TN219;TP274

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