1种智能农业设备开关稳压电源系统研究  

An Intelligent Switching Power Supply for Agriculture Device

作　　者：周国雄[1] 朱俊杰[1] 

机构地区：[1]中南林业科技大学电子与信息工程学院,湖南长沙410004

出　　处：《安徽农业科学》2008年第25期11143-11145,共3页Journal of Anhui Agricultural Sciences

基　　金：中南林业科技大学青年科学研究基金重点项目(07010A);湖南省自然科学基金项目(02JJY203);永科发[2004]19号

摘　　要：设计了1种智能开关稳压电源。采用性能稳定常用的PWM芯片SG3525进行反馈调整稳压,并通过51单片机设定输出电压,功放电路采用MOS管搭建的双端推挽方式,简化了驱动电路,提高了电源效率。过载保护电路采用过流采样比较器,通过程序查询的方式,实现了电源的过载保护。系统测试和运行结果表明,该稳压电源使控制更加智能化,结构简单,能为农用大型机械和农业照明设备电路提供稳定的电源,具有比较广阔的应用和发展前景。An intelligent switching power supply is designed. The PWM chip SG3525 with stable perfomance is used to adjust regulators and MCU 51 is adopted to set the output voltage. The double - push - pull mode based on MOS structures is choused for power amplifier, which simplifies the driving circuit, improves power supply efficiency. Overload protection circuit uses flow sampling comparator and enquiries through the procedures, thus it can achieve power overload. System test and results show that the power supply with simple structure can control more intelligent. It can provide stable power supply for agriculture engineering and lighting device. It has wide application and development prospects.

关 键 词：开关电源 过载保护 PWM控制 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置]