荧光灯自动调光系统的研究

Automatic Dimming System of Fluorescent Lamps

在图书馆、博物馆等大型场所,恒亮度的照明系统具有非常广泛的应用前景.利用光敏电阻作为光强采集元件,建立了一种能够根据外界光强自动调节灯功率的照明系统,并介绍了自动调光电路的系统框图,包括光敏电阻测试电路、调光电路等.主要针对光敏电阻的Pspice模型、荧光灯模型和调光理论进行了理论分析.仿真结果表明了上述理论的正确性,该系统能够保证室内的恒亮度控制.

Lighting system with constant luminance has a good prospect in some large rooms such as library and museum. Based on photosensitive resistor, an Automatic dimming system of the fluorescent lamps was established. The system has the function of regulating the lamp power when the environment illumination was changed. The automatic dimming system circuit diagram was introduced including the detecting circuit, the dimming circuit and so on. The Pspice model of the photosensitive resistor, fluorescent lamps model and dimming theory were also discussed. Verified by the simulated results, the system does have the function of changing the lamp power automatically.