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矿用电源检验用交流电压阶跃试验装置的研究 被引量:1
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作者 王海潮 《工矿自动化》 北大核心 2015年第12期55-58,共4页
介绍了一种矿用电源检验用交流电压阶跃试验装置。该装置以触摸屏作为指令输入和电压指示窗口,以Modbus-RTU作为通信方式,用单片机控制交流固态继电器实现不同交流电压之间的阶跃功能。127V电压等级带载试验结果表明,该装置能够安全、... 介绍了一种矿用电源检验用交流电压阶跃试验装置。该装置以触摸屏作为指令输入和电压指示窗口,以Modbus-RTU作为通信方式,用单片机控制交流固态继电器实现不同交流电压之间的阶跃功能。127V电压等级带载试验结果表明,该装置能够安全、可靠地进行电压阶跃试验,最大带载电流不低于5A,阶跃时间不超过50ms。 展开更多
关键词 矿用电 源效应试验 电压阶跃试验 触摸屏 交流固态继电器
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Bon Appetit! An Investigation About the Best and Worst Color Combinations of Lighting and Food
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作者 Hyeon-Jeong Suk Geun-Ly Park Yoonsook Kim 《Journal of Literature and Art Studies》 2012年第5期559-566,共8页
We investigated an interaction effect between lighting color and food color that stimulates or discourages one's appetite. Facilitated by the LED (light-emitting diode) as an additional chromatic lighting source, o... We investigated an interaction effect between lighting color and food color that stimulates or discourages one's appetite. Facilitated by the LED (light-emitting diode) as an additional chromatic lighting source, observers selected the best and worst lighting colors by themselves using a "Mini Living Colors (PhilipsTM)" in the preliminary test (N = 30) and then color picker software in the main experiment (N = 30). Food stimuli were composed of two aspects, type--natural or processed--and complexity--low or high, and consequently they were grouped into four categories. We measured the selected lighting color in terms of chromaticity and illumination level, and analyzed the best and worst combinations based on these measurements. Throughout the two empirical studies, we found three tendencies: First, except for the white, yellow lighting stimulates while red and blue discourages one's appetite. Second, when color categories of lighting and food are similar to each other, it stimulates the appetite whereas complementary, it discourages it. Third, the type of food does not act as an influencing factor. 展开更多
关键词 food color lighting color APPETITE COLOR
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