广东工业大学信息工程（电子信息工程方向）专业本科毕业设计（论文）.docx

单片机实现数字式可调稳压电源
摘要
单片机实现的数字式可调稳压电源由于原理简单、稳定性好、精度高、成本低、易实现等诸多优点而受到越来越广泛的重视。其性能优于传统的可调直流稳压电源,操作方便,非常适合一般教学和科研使用。
本文通过对一个数控稳压电源系统的设计,详细介绍了AT89S52 单片机应用中的键盘扫描原理、数码管动态显示原理、定时中断原理,从而了解单片机相关指令在各方面的应用,同时还介绍了数模转换芯片DAC0832及存储芯片24C01的工作原理。系统由模拟电源、控制电路、数模转换电路、放大电路、显示电路等部分构成,能输出0V-24V电压范围,,并且具有掉电存储等功能。
首先,本文将概述数字式可调稳压电源的基本原理。
其次,本文将详述数字式可调稳压电源系统的硬件电路设计。
最后,本文将介绍数字式可调稳压电源系统的软件设计。
在附录中,本文还将给出系统的程序清单,供参考之用。
关键词:数控,单片机,直流稳压,数模转换
Abstract
Digital adjustable power supply which is controlled by the MCU(micro controller unit)attracts much attention for its particular advantages,such as simple principle, good stability, high accuracy and low cost, easy to implement and so on[1]. Its performance is superior to the traditional adjustable DC(direct current) power supply. It is convenient for operation and very suitable for the general teaching and research using.
This paper is about an NC(numerical control)regulators power system design. By the design,this paper introduces the keyboard scanning principle ,the digital tube dynamic display principle and the timer interrupt principle in AT89S52 Single-Chip puter applications , then we can understand the correlation instruction in various application[2].It also introduces work principle of digital-to-analog converter chip DAC0832 and memory chip 24C01. The system includes some important parts : the analog power, the control circuit, the digital-to-analog converter circuit, the amplifier circuit, the display circuit,it provides 0V to a 24V output voltage range, stepping value of DC power supply, and the power off and storage function.
Firstly, I will describe the digital adjustable power supply the basic principle.
Secondly,I will detail the digital adjustable power supply system circuit design of the hardware and software design.
Finally, I will introduce the digital adjustable power supply system software design .
At the supplement, I will also give a list of procedures for reference only.
Key words: NC, MCU,