基于HT66F30单片机调光恒流源系统设计
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摘要
为了提高恒流源LED照明系统的照明效率和减少用电量,采用单片机HT66F30为控制核心和调光芯片BP1361,运用光照检测和脉冲宽度调制(Pulse width modulation,PWM)脉宽调光技术,设计能依据外界光强度自动补偿的恒流源系统;并构建样机对设计原理进行验证,该恒流源系统在外界光强度为小、中和大时分别减少电量0、50%和100%;表明该恒流源系统能够实现自动补偿功能,提高照明效率和减少用电量,体现了低碳、节能和环保的设计理念.
In order to improve lighting efficiency and reduce with power and carbon in LED illumination supplied by constant current source,the paper presented constant current source system with micro-controller HT66F30 as control core and adjusting light chip BP1361,using light test and PWM(pulse width modulation),depending on outside light strength automatically.The structure of the prototype was constructed to verify the principle.Experimental data showed that it could save about 0,50% and 100% energy when outside light strength were small,middle and large respectively,indicated that the constant current source system could achieve adjusting light features automatically.It could improve lighting efficiency and reduceing power and carbon,to reflect an energy-saving and environmental of design ideal.
In order to improve lighting efficiency and reduce with power and carbon in LED illumination supplied by constant current source,the paper presented constant current source system with micro-controller HT66F30 as control core and adjusting light chip BP1361,using light test and PWM(pulse width modulation),depending on outside light strength automatically.The structure of the prototype was constructed to verify the principle.Experimental data showed that it could save about 0,50% and 100% energy when outside light strength were small,middle and large respectively,indicated that the constant current source system could achieve adjusting light features automatically.It could improve lighting efficiency and reduceing power and carbon,to reflect an energy-saving and environmental of design ideal.
引文
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[2]易安.半导体照明21世纪的节能新光源[J].中国创业投资与高科技,2004(8):28-30.
[3]杨恒.LED照明驱动电路设计与实例精选[M].北京:中国电力出版社,2008.
[4]陈世杰,顾亦磊.同步整流Flyback电路的一种软开关实现方法[J].电力电子技术,2004,38(5):19-21.