节点文献
微光应力源系统研究
Research on System of Low-light Level Stress Source
【作者】 许红梅;
【导师】 杨志文;
【作者基本信息】 长春理工大学 , 光学工程, 2008, 博士
【摘要】 夜视技术在现代战争中具有重要地位,配置夜视器材的武器装备可遍及海、陆、空作战平台。因此,先进的夜视技术对于控制战场形势具有至关重要的意义。为了科学、客观地评价夜视系统的可靠性指标,需对微光夜视仪系统按照“可靠性试验剖面”要求进行各种应力条件下的可靠性试验。这不仅需要进行微光夜视仪可靠性试验装备研究,还需开展与之相关的试验技术研究。微光应力源系统研究属其中的主要研究内容之一。微光应力源系统依据试验剖面的光应力需求,为试验系统提供一种科学稳定的光应力试验环境,以更接近夜间实际环境来检测微光夜视仪性能。为此,须开展微光应力源模型研究及其光应力、电应力的施加与监控分析设计,以便对相关夜视仪进行可靠性试验考核,确保我军夜视装备质量。本文结合微光夜视仪可靠性试验设备的参研工作,给出了微光应力源系统整体布设方案并对其光照度做了详细计算;运用蒙特卡罗方法,建立了积分球式光源数学模型,对积分球光照度分布均匀性进行了模拟,给出了出口处的光照度分布结果;完成了光应力源监测与控制及配套模块设计。此外,对大视场平行光管进行了分析设计;在微光通道中采用透射式分辨率板,通过大量的实测工作和理论分析,得出了与自然微光相当的条件。积分球式微光应力源系统采用共光源辐射状布设,易满足新型号微光夜视仪的试验要求,可同时对四具微光夜视仪进行可靠性试验,便于四组实验结果比对。微光夜视仪可靠性试验设备经过近2000小时的考核试验,其试验结果表明,该应力源系统设计科学合理,为微光夜视仪的靶场试验提供了质量保证,所做工作具有较大的工程应用价值。
【Abstract】 Night vision technology has very important position in Modern Warfare. Weapon with night-vision units can be used on ground, naval and air forces. Therefore, advanced night vision technology has significant meaning on controlling the warefore situation. In order to evaluating the system reliability of a night vision system scientifically as well as objectively, the reliability test on variable situation is requested according to the "reliability testing section". It not only request the research on the reliability testing equipment of night vision viewer, but also request the research on the interrelated testing technology. The low-light level stress source study is the primary content in it.According to the reliability testing section, the low-light-level(LLL) stress source system can provide a scientifical and reliable environment for the testing system. So, testing of the LLL night vision viewer performance can be reliazed much closer to the night environment. Therefore, the study of the glimmer stress must be carried out as well as the glimmer stress source system’s light stress exerts and monitors. So that we can test the reliability of the related night vision device to guarantee our army night vision equipment quality.Acordding to the research on the reliability test of the LLL night vision device, the overall layout of the LLL stress source is given in this article. And the illuminance of it is calculated in detail. The integrated sphere light source model is established based on the Monte Carlo method. Illuminance distributed uniformity of the integrated sphere is simulated and the exit illuminance distributed result has gotten. Detecting and controlling of the light stress has completed. The corollary module is designed. The analysis and design of the large field collimator tube is accomplished. Transmission resolusion plate is adopted in the LLL channel. The condition in keeping with the nature LLL is obtained through large actual measurement and theoretical analysis. Sharing-light-source radial layout is adopted in the integrated sphere LLL stress source. It can satisfy the testing request of new type LLL night vision device easily. It can provide the reliability test for four LLL night vision devices simultaneously. The contrast of the four results is easy to complete.The reliability measuring equipment of LLL night vision device passed near 2000 hours test. The test result indicated, the stress source system design is scientific and reasonable. It has provided the quality assurance for LLL night vision device’s range testing. The work has great project application value.
【Key words】 low-light level stress source; reliability test; low-light level night vision device; Monte Carlo simulation; illuminance;