A robust system for backlit keyboard inspection is revealed. The backlit keyboard not only has changeable diverse colors but also has the laser marking keys. The keys on the keyboard can be divided into regions of fun...A robust system for backlit keyboard inspection is revealed. The backlit keyboard not only has changeable diverse colors but also has the laser marking keys. The keys on the keyboard can be divided into regions of function keys, normal keys, and number keys. However, there might have some types of defects： incorrect illuminating area, non-uniform illumination of specified inspection region（IR）, and incorrect luminance and intensity of individual key. Since the illumination features of backlit keyboard are too complex to inspect for human inspector in the production line, an auto-mated inspection system for the backlit keyboard is proposed in this paper. The system was designed into the operation module and inspection module. A set of image processing methods were developed for these defects inspection. Some experimental results demonstrate the robustness and effectiveness of the proposed system.展开更多
为研制出满足惯性约束聚变(ICF)实验的氘氚(DT)冷冻靶,需要控制DT结晶生长过程,实现DT单晶生长,由此减少影响冰层均匀化及聚变实验的晶体缺陷.本文运用晶体生长形态动力学理论建立了密排六方晶体(hcp)单晶生长模型,实验中通过对靶室进行...为研制出满足惯性约束聚变(ICF)实验的氘氚(DT)冷冻靶,需要控制DT结晶生长过程,实现DT单晶生长,由此减少影响冰层均匀化及聚变实验的晶体缺陷.本文运用晶体生长形态动力学理论建立了密排六方晶体(hcp)单晶生长模型,实验中通过对靶室进行±3 m K精确控温,采用可见光背光成像技术在线表征了低温下玻璃微球内氘(D2)的结晶生长过程,结果表明:在20—100 Pa低温氦气导热环境下,通过缓慢降温可显著降低氘晶体生长过程中形成的缺陷;当降温速率达到2 m K/min时,观测到了氘燃料的两种单晶生长过程,实验具有可重复性;建立的hcp单晶生长理论模型与实验结果符合,并与美国利弗莫尔国家实验室(LLNL)的DT单晶生长过程进行了对比,提出了冷冻靶内D2/DT燃料的单晶生长方法.展开更多
文摘A robust system for backlit keyboard inspection is revealed. The backlit keyboard not only has changeable diverse colors but also has the laser marking keys. The keys on the keyboard can be divided into regions of function keys, normal keys, and number keys. However, there might have some types of defects： incorrect illuminating area, non-uniform illumination of specified inspection region（IR）, and incorrect luminance and intensity of individual key. Since the illumination features of backlit keyboard are too complex to inspect for human inspector in the production line, an auto-mated inspection system for the backlit keyboard is proposed in this paper. The system was designed into the operation module and inspection module. A set of image processing methods were developed for these defects inspection. Some experimental results demonstrate the robustness and effectiveness of the proposed system.
文摘为研制出满足惯性约束聚变(ICF)实验的氘氚(DT)冷冻靶,需要控制DT结晶生长过程,实现DT单晶生长,由此减少影响冰层均匀化及聚变实验的晶体缺陷.本文运用晶体生长形态动力学理论建立了密排六方晶体(hcp)单晶生长模型,实验中通过对靶室进行±3 m K精确控温,采用可见光背光成像技术在线表征了低温下玻璃微球内氘(D2)的结晶生长过程,结果表明:在20—100 Pa低温氦气导热环境下,通过缓慢降温可显著降低氘晶体生长过程中形成的缺陷;当降温速率达到2 m K/min时,观测到了氘燃料的两种单晶生长过程,实验具有可重复性;建立的hcp单晶生长理论模型与实验结果符合,并与美国利弗莫尔国家实验室(LLNL)的DT单晶生长过程进行了对比,提出了冷冻靶内D2/DT燃料的单晶生长方法.
