可编程数字稳压电源设计  

Design of programmable digital regulated power supply

作　　者：陶佰睿[1] 苗凤娟[1] 惠鹏飞[1] 杨迪[1] 

机构地区：[1]齐齐哈尔大学通信与电子工程学院,黑龙江齐齐哈尔161006

出　　处：《电源技术》2012年第6期855-857,901,共4页Chinese Journal of Power Sources

基　　金：黑龙江省自然科学基金(F201008);黑龙江省青年科学基金项目(QC2011C092);齐齐哈尔大学青年教师科研启动支持计划项目(2010k-Z02;2011k-Z01);黑龙江省普通高等学校青年学术骨干支持计划项目(1251G067;1252G067);齐齐哈尔市科学技术计划项目(GYGG2010-03-1)

摘　　要：利用AT89C51单片机强大的可编程功能和硬件接口实现用按键或串口调整系统的输出,以达到控制输出电压的目的。输出部分由数码管显示和DA转换器输出两部分组成。数模转换芯片在单片机的输出端采样,将采样转换的结果输出,并且数码管显示单元把输出结果显示出来。电压的调节精度0.05 V,显示精度达到0.01 V。除了PC机与单片机的串口通信实现对单片机的输入之外,还可以通过编码过的按键实现对单片机的输入控制,输入的数据就是要显示和转换出来的数据。设计的特色是:输入方式多,输入操作简单灵活,输出精度高,性能稳定,经济和携带方便等。The powerful programmable feature and hardware interface of microcontroller AT89C51 was used in this design to achieve adjusting output by button or serial port, thus attaining the target of controlling output voltage. The output part comprised of LED Nixie tube and DA converter. The digital to analogy converter chip sampled at the output of MCU and outputted the sampling result, and at the same time the result was displayed by LED Nixie tube. The voltage regulation accuracy by DAC is 0.05 V, and the display precision is 0.01 V. Besides the way of input of serial communication between MCU and a personal computer, button can be adopted to realize the input control to MCU, while the input data will be displayed and converted at the output. The characteristics of this design are as follows： multi-input style with flexible and concise operation, having stable output with high accuracy, costing low and carrying easily and so on.

关 键 词：AT89C51单片机:串口通信 DA转换器 数字稳压电源 

分 类 号：TM13[电气工程—电工理论与新技术]