In our paper,the intelligent lighting control system can automatically adjust the brightness of the LED according to environment brightness.The system is divided into many modules,they are the controller module,the infrared detection module,the ambient brightness detection module,the LED temperature detection module,the display module,the alarm module,the data storage module,the brightness control module,and other important parts.The STC12C5A60S2 is the controller.Passive pyroelectric infrared sensor and Fresnel lens constitute the system of infrared detection module.DS18B20 constitute the system of temperature detection module.S5052 constitute the system of lighting intensity detection module.Using multi-sensor data fusion technology based on expert knowledge,and establishing an expert knowledge base.LED using pulse width modulation(PWM) method.In order to reduce the influence of traditional PWM dimming algorithm in the high weights bits gray uniformity.
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