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电子电工实验教学中不安全因素探究 被引量:2
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作者 陈炳文 《中国现代教育装备》 2006年第8期95-96,共2页
在电子电工实验教学中,学生在实验时,往往由于缺乏应有的安全意识,造成触电事故。因而通过对常见不安全因素的分析,找出实验中不安全因素所在,防患于未然,确保实验的顺利进行。
关键词 触及电源 错误使用设备 职业院校 金属外壳带电 电容器 电感器放电 电子电工 实验教学 不安全因素 安全意识
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Development of the Tiny Current Test of nA
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作者 LIU Jian HUANG Yi 《Southwestern Institute of Physics Annual Report》 2005年第1期159-160,共2页
The sensor of ray made use of photosensitive element translate the light signal into the electric signal, its keenness wavelength is by wavelength of observable ray, includes the infrared's wavelength and ultraviolet... The sensor of ray made use of photosensitive element translate the light signal into the electric signal, its keenness wavelength is by wavelength of observable ray, includes the infrared's wavelength and ultraviolet radiation's wavelengthth. The sensor of ray is not only used for detecting ray but also used for composing the other sensor. It can detect many non-electric signal, the premise should translate the non-electric signal into the light signal. The sensor of ray is a sort of most output and application being most extensive, it is very important in the field of automatic control and none-electric test art. 展开更多
关键词 Electrometer-grade operational amplifier Photoelectric cell
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Transformer Partial Discharge Monitoring Based on Optical Fiber Sensing 被引量:2
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作者 Kun WANG Xinglin TONG Xiaolong ZHU 《Photonic Sensors》 SCIE EI CAS 2014年第2期137-141,共5页
The power transformer is the most important equipment of the high voltage power grid, however, some traditional methods of online partial discharge monitoring have some limitations. Based on many advantages of the opt... The power transformer is the most important equipment of the high voltage power grid, however, some traditional methods of online partial discharge monitoring have some limitations. Based on many advantages of the optical fiber sensing technology, we have done some research on fiber optics Fabry-Perot (FP) sensing which can be useful for the transformer on online partial discharge monitoring. This research aimed at improving the reliability of power system safety monitoring. We have done some work as follows: designing a set for fiber optics FP sensor preparation, according to the fabrication procedure strictly making out the sensors, building a reasonable signal demodulation system for fiber optics FP sensing, doing a preliminary analysis about online partial discharge signal monitoring, including the research on different discharge intensities with the same measuring distance and different measuring distances with the same discharge intensity, and then making a detailed analysis of the experimental results. 展开更多
关键词 Partial discharge fiber FP sensor diaphragm effective reflectivity
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