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金刚石膜冷阴极场发射平板显示研究
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作者 张兵临 《材料导报》 EI CAS CSCD 2001年第2期26-26,共1页
冷阴极场发射显示(FED)是自1991年以来得到迅速发展的一种新的平板显示技术。由于FED和CRT一样是阴极电子发射主动型发光,因此具有亮度高、响应快、视角宽、色彩饱和度好等一系列优点,且能量转换效率高,因而倍受人们重视,并以惊人的速... 冷阴极场发射显示(FED)是自1991年以来得到迅速发展的一种新的平板显示技术。由于FED和CRT一样是阴极电子发射主动型发光,因此具有亮度高、响应快、视角宽、色彩饱和度好等一系列优点,且能量转换效率高,因而倍受人们重视,并以惊人的速度发展。 自1996年起,我们研究组在国家863计划新材料领域专家委员会的资助与支持下,以金刚石等碳基薄膜的冷阴极场发射平板显示为研究内容,开展了一系列研究工作,并取得了一些有重要意义的研究成果。 展开更多
关键词 金刚石薄膜 冷阴极场发射显示 平析显示 冷阴极
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Bench for Vibration Study in an Unbalanced Motor Using Arduino
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作者 Thayanne Barros Bandeira Andre Souza da Cruz Wellington Fonseca da Silva 《Journal of Mechanics Engineering and Automation》 2015年第2期82-87,共6页
Part of the difficulty in engineering education is to achieve aggregate theoretical knowledge to practice what therefore discourages the student. Trying to alleviate this difficulty, practical problems are created to ... Part of the difficulty in engineering education is to achieve aggregate theoretical knowledge to practice what therefore discourages the student. Trying to alleviate this difficulty, practical problems are created to encourage students to apply their knowledge in different ways; these problems can be computational order, resolved by programs through simulation, or physical, with the realization of models, prototypes, benches or interactive platforms with visual practical approach. From this, it was proposed to students of the Federal University of Pardi--Campus Tucurui through the Electric Power Systems and Mechanics Research Group, in order to apply knowledge arising from multidisciplinary fields of engineering in the construction of a prototype with reused materials and low cost enabling studies and analysis of vibrations in unbalanced motors. This system features an open source prototyping embedded platform Arduino to read values from the sensors used: accelerometers and potentiometers coupled to the engine, aiming to collect values and vary the supply voltage. The results are read by Arduino and computationally processed to be printed on an LCD display. Therefore, the aim of this is to provide an accessible way using simple techniques a prototype linking the theoretical and practical knowledge as the system of the bench that performs vibration analysis in an unbalanced motor interactively, and encourage research and development technologies in the Amazon region. 展开更多
关键词 ARDUINO ENGINEERING engines vibrations.
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