发布时间：2015-01-22 来源：人大经济论坛

自动化专业论文范文 目　　录 一 前言……………………………………………………………1 1.1本课题研究的来源和意义………………………………………………1 1.2本课题的国内外发展状况………………………………………………1 1.3本课题研究的目标及内容………………………………………………1 二 设计总体规划………………………………………………………2 2.1系统的结构和功能………………………………………………………2 2.2系统的工作原理…………………………………………………………2 2.3太阳能光电池……………………………………………………………2 2.4白光LED…………………………………………………………………3 2.4.1白光LED的内部构造和发光原理……………………………………3 2.4.2白光LED的性能………………………………………………………4 2.5蓄电池……………………………………………………………………5 三 电路调试及元器件选择…………………………………………………6 3.1 控制电路部分……………………………………………………6 3.2 延时电路部分…………………………………………………………6 3.3 功率调节电路部分……………………………………………………7 四 电路设计…………………………………………………………9 4.1欠压保护电路…………………………………………………………9 4.2光控开关电路…………………………………………………………9 4.3执行电路………………………………………………………………10 4.4充电保护（过压保护）电路……………………………………………11 4.5功率调节电路…………………………………………………………11 4.6延时电路………………………………………………………………12 4.7总体电路………………………………………………………………13 五 性能测试分析……………………………………………………15 六 结论………………………………………………………………16 谢辞……………………………………………………………………17 参考文献………………………………………………………………18 附录1实物照片……………………………………………………………19 附录2电路图………………………………………………………………21 摘　　要 本设计针对目前太阳能照明系统中所存在的一系列问题进行研究和改善。具体分为两个问题，一个是对蓄电池的过充和过放问题，一个是LED照明灯的开启和关闭以及功率控制问题。 本设计较好地解决了目前存在的这两种问题，本设计具有对蓄电池的过充保护和欠压保护，当蓄电池电压过高时系统将自动停止充电，电压值回复到一定值时再次对其充电，当电压过低时系统将自动切断负载，以免蓄电池出现过放现象影响寿命，当电压恢复到一定值时再次接通负载。此外，对LED照明灯的控制方面有很人性化的设计，控制模式可分为：纯光控，光控+延时关闭，光控+延时后某一特定功率发光。 这样的设计对系统的寿命有较好的改善以及能够更有地利用电能，以最低的成本达到最好的照明效果，进一步达到使用绿色能源环保的目的。 关键词：太阳能 白光LED 蓄电池 LED驱动电路 ABSTRACT This view of the current design of solar lighting systems in the existence of a range of issues to study and improve. There are two specific issues, one is the battery charge and issue a release,two is LED lighting's open and closed, and power control issues. The design can solve the existing these problems, the design of the battery charge of the protection and under-voltage protection, when the battery voltage is too high, the system will automatically stop charging.When voltage value is back to a certain value, once again their charging that. When voltage is too low , the system will automatically cut off the load, so that there were battery-life impact of the phenomenon. When the voltage is back to a certain value, once again connected load. In addition, the LED lights on the control of a very human nature of the design, control mode can be divided into: pure light control, light control + delay the closure, light control + delay after a particular power LED. This design of the system a better life can be improved and more use of power, to achieve the lowest cost the best lighting effects,further achieve use of green energy to environmental protection purposes. Key words：Solar White LED Battrey LED Driver Circuit