1、 毕 业 论 文（设 计） 论 文 （ 设 计 ） 题 目 ： 自 动亮度控制台灯自 动亮度控制台灯 摘摘 要要 本课程设计的是一种供夜间阅读和书写有的光控制台灯，歙 周围书写区域 内的照度免受电源电压、环境光变化的影响，使台灯周围的光线保持在人眼适宜 的范围内，具有自亮度控制的功能。从而实现台灯的光线可以随着台灯周围的光 线的变化而自动的调节自身为管的光量。当环境照度弱时，它发光亮度大；环境 照度强时，它发光亮度就暗，从而起到节能和护眼睛的作用。 它涉及一种自动调节光照亮度的照明灯具。 它包括一个带有光敏传感器的台 灯，所述的台灯由电源插头、开关、灯泡和聚光灯罩构成，使用 220 伏交流电供
2、 电。在所述的台灯底座的上面设置一个光敏传感器，内有光敏电阻，它可以随桌 面上亮度的变化而调节内部电流的变化，从而调整台灯亮度的变化，使桌面始终 保持适宜的亮度。 而当台灯周围的环境亮度超过一定的限度时， 台灯会自动关闭； 当环境亮度低于某一限度时，可以自动打开。本实用新型主要用于照明，亮度自 动调节，保护视力。 关键词关键词: :自动控制，采光电路，差动放大电路， 功率放大电路 Abstract This course is designed for reading and writing at night, some light control desk lamp, Xi writing
3、in the region around the illumination from the power supply voltage, ambient light changes, so that the light around the lamp to keep fit in the context of the human eye, brightness control feature with self. Can be realized with the lamp light lamp light changes around the automatic regulation of i
4、ts own to control the amount of light. When the environmental illumination is weak, it is great brightness; environmental illumination intensity, it brightness on the dark, to play the role of energy efficiency and protect the eyes. It involves a kind of automatic adjustment of light intensity of th
5、e lighting fixtures. It includes a table lamp with photosensitive sensor, lamp described by the power plug, switches, light bulbs and spotlights cover composition, using 220-volt AC power supply. In the above described lamp base to set a photosensitive sensor, there are photosensitive resistor, it c
6、an change with the desktop, adjust the brightness of the changes within the current, and to adjust the lamp brightness changes, so that the desktop always maintain appropriate brightness. When the lamp brightness of the surrounding environment over a certain limit, the lamp will automatically shut down; when the ambient light below a certain threshold, it will automatically open. The model is mainly used for lighting, adjust brightness, protect eyesight. Keywords: automatic control, lighting
