基于单片机的红外检测人体检测节能灯。人体感应及在床检测节能灯，无人状态下，半小时后亮度降为50 ，再半小时后关闭。-Infrared detection of the human body based on single chip testing energy-saving lamps. Human detection sensor and energy-saving lamps in the bed, no state, half an hour later reduced to 50 br