CAJ | 학술논문

基于数字微镜(DMD)的红外场景投射器可以被应用于场景仿真系统中。论述了应用于红外仿真系统的DMD显示灰度图像的原理和对应的DMD的工作时序，并且设计了基于TI的0.7XGA芯片组的红外场景投射器。该设计支持外部同步触发，投射图像是灰度级是8位，并且投射图像的帧频大于250 Hz。仿真系统中的热像仪和投射器的同步将影响采集的结果，分析了热像仪的积分时间包含、超前和滞后于投射器播放时间对系统采集到的图案灰度产生影响，论证了严格同步在红外仿真系统中的必要性，并通过实验数据进一步证明了分析的结果。
기우수자미경(DMD)적홍외장경투사기가이피응용우장경방진계통중。논술료응용우홍외방진계통적DMD현시회도도상적원리화대응적DMD적공작시서，병차설계료기우TI적0.7XGA심편조적홍외장경투사기。해설계지지외부동보촉발，투사도상시회도급시8위，병차투사도상적정빈대우250 Hz。방진계통중적열상의화투사기적동보장영향채집적결과，분석료열상의적적분시간포함、초전화체후우투사기파방시간대계통채집도적도안회도산생영향，론증료엄격동보재홍외방진계통중적필요성，병통과실험수거진일보증명료분석적결과。
The Dynamic Infrared Scene Projector based on Digital Micromirror Device (DMD) can be used in Scene Simulation System. The principle of displaying grayscale images on DMD which used in Scene Simulation System and its driving timing were discussed in this paper. An infrared scene projector based on 0.7XGA DMD chipset of Texas Instruments was designed. This projector can be synchronized by external trigger signal, and its max frame rate is greater than 250 Hz while the image mode is 8 bits of grayscale resolution. The synchronization between the projector and the image sampling equipment (Infrared Thermal Imager) has great influence on the sampled result. 3 kinds of synchronization relationship, including the projecting phase leading, equal to and lagging the image sampling system, were analyzed to illustrate the influence of the synchronization relationship between the projector and the image sampling equipment. Experiments show the results in detail.