【正文】 al applications of solar cells unable to provide maximum battery can receive current, and thus the traditional threestage charging mode can not be effectively applied to solar charging of the battery . This design uses MPPT charging, constant voltage charging and floating charge scheme instead of the traditional three stage charging mode, allowing the system to improve the utilization of solar energy , while extending the battery life. The specific design of the charging circuit shown in . In this paper, the MOSFET diodesreplaced, namely synchronous Buck. MOSFET, with very low onresistance can be achieved usinga diode is much higher than the conversion efficiency of solar energy to minimize the losses, andwill not cause serious thermal problems. For the MOSFET operates in the best condition, its drivercircuit using IR 39。s IR2101 halfbridge driver chip to drive two FET work , by programming theSTC15F2K61S2 from CCP1_3, CCP2_3 output 2 50KHz plementary edgealigned PWMpulsedriven synchronization Buck work . Charging circuit schematics Voltage and current sensing solar modules by the microcontroller ADC2, ADC6 channel analogto digital conversion is pleted to determine the solar cell module output power, the batteryvoltage is detected by the microcontroller ADC0 channel analog to digital conversion is plete,as the battery charge and discharge status signal. When the battery voltage is lower than ,perturbation and observation method using realtime adjustment of the PWM pulse width to the maximum power output of solar modules for fast charging of the battery when the battery voltage is above but less than , SCM Buck circuit exit MPPT function, so Buck circuit bees constant voltage output, and with constant voltage charging the battery to slow. When the battery voltage is higher than , SCM Buck circuit the battery to the floating charge. TVS is mine management, solar LED street light control system has been working in theoutdoors, it will inevitably encounter lightning, for every system in the indirect two terminals of atransient suppression diode controller , effective protection and control from damage . LED constant current drive circuit Different places different requirements on the power LED lights, the conventional constantcurrent source circuit in the output current of only a certain constant value, the output power isconstant at a value of two , this aspect needs and lead to a constant LED lights consistent flowsource to work , on the other hand lead to LED lights require customization. To this end, we designed a new type of solar LED street lamp controller, according to the number of street lights in parallel with the number of preset constant current source output current controller so that thecontroller has some versatility. High voltage power LED constant current drive circuit design shown in Figure 3 , the core ofthe device is the United States of Linear Technology pany dedicated constant current LED chip LT3755, the chip 39。s input voltage range of ~ 40V, LED column by side detection output current,output voltage is + ~ 60V, efficiency boost mode over 94% , using the PWM dimming signal ,dimming ratio of up to 3000:1 , using the CTRL pin can be simulated 10:1 dimming, with open LED protection, programmable under voltage lockout hysteresis and programmable softstartFunction. LED constant current drive circuit schematics LED drive current size by the CTRL pin voltage LT3755 and R20 resistance to work together to determine when the pin voltage is below , the voltage by adjusting the current flowing through them can be achieved on the conduct of 10:1 LED adjusted to achieve the purpose analog dimming .According to this feature of the LT3755, the PWM output pin microcontroller CCP0_3 processing and filtering the CTRL pin LT3755 is connected in parallel with the number depending on how many LED, PWM duty cycle through preset, to set the LED drive current purposes. Through the MCU pin output PWM duty cycle adjustment, you can control the LED light intensity and power output, to digital dimming purposes. R20 while LED highside current sense resistor for LED short circuit protection, short circuit when the LED, LT3755 off its PWM output, constant current source circuit to stop working.4 System Software DesignSystem software flow chart below:5 Summary Solar LED street lighting system is the perfect bination of solar energy development andutilization of a new generation of green light LED. After a prehensive hardware and softwaredebugging times, the controller is based on STC microcontroller core, with DC / DC convertercircuit as the hardware basis, PWM technology as a means of regulating the output voltage andcurrent, using the threestep strategy to achieve charging the battery, MPPT algorithm which usesfast charge phase, which greatly highlights the advantages of energysaving solar LED lights andapplication prospects of the system.References:[1] Zhaoqing Li (ed.), SCM principles and interface circuits [M], Beijing University of Aeronautics and Astronautics Press, 2007.[2] Genchun Huang, Xiaoqiao Chen, Wangxian Zhang (ed.), Electronic Design Tutorial[M], Electronic Industry Press , .[3] Jianhua Wang, Jiping Wu, Xuwei, Application of solar energy research progress [J],Hydroelectric Energy , 2007 ( . 4 ).[4] Libo Wu , Zhengming Zhao , Jianzheng Liu, Intelligent controller for solar lighting system [J],Tsinghua University ( Natural Science ) , 2003 ( 09 ).[5] Hua Kun , Li Yan, Design Solar LED street light controller [J], Microputer Information,2009 ( 2 ).附錄B 英文文獻(xiàn)譯文基于單片機(jī)的太陽能LED路燈控制器設(shè)計賈瑞霞 王麗娟 楊雙翼 杜貴濤(鄭州華信學(xué)院 中國 河南 451150)jruix@,wlj@,654386921@,67792519@[摘要]本文介紹了一種基于單片機(jī)的太陽能控制器，系統(tǒng)采用STC15F2K61S2單片機(jī)作為控制電路的核心設(shè)備。本設(shè)計采用的PWM（脈沖寬度調(diào)制）控制技術(shù)和MOSFET管被打開和關(guān)閉以控制電池充電和放電。實驗結(jié)果表明，該控制器的性能可靠，可以監(jiān)控實施太陽能電池和蓄電池，電池充狀態(tài)放電控制最佳的，以延長電池的使用壽命。[關(guān)鍵詞]單片機(jī)。太陽能。LED路燈?？刂破?.