单片机实现数字式可调稳压电源设计.doc
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单片机实现数字式可调稳压电源设计,论文标准word格式排版 43页摘 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...
内容介绍
此文档由会员 莎士比亚 发布
论文标准WORD格式排版 43页
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，步进值为0.1V的直流电源，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 Microcomputer 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 0.1V 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, DC regulators, Digital-to-analog converter
目 录
1 绪论1
1.1研究目的及意义1
1.2 国内外发展状况1
1.3研究方法2
1.4 论文构成及研究内容2
2 数字式可调稳压电源原理介绍3
2.1 方案选择及总体设计原理介绍3
2.2 单片机AT89S52介绍4
2.3 矩阵式键盘扫描原理5
2.4 数码管动态显示原理6
2.5 DAC0832及24C01使用介绍7
3 数字式可调稳压电源硬件电路设计10
3.1稳压电源数字部分电路10
3.1.1 单片机外围接口电路10
3.1.2 数字部分电路PCB设计15
3.2 稳压电源模拟部分电路16
3.2.1 电源部分电路16
3.2.2 输出电压控制单元电路17
4 数字式可调稳压电源软件设计20
4.1系统软件流程图20
4.2 系统程序介绍22
结论26
参考文献27
致谢28
附录29
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，步进值为0.1V的直流电源，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 Microcomputer 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 0.1V 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, DC regulators, Digital-to-analog converter
目 录
1 绪论1
1.1研究目的及意义1
1.2 国内外发展状况1
1.3研究方法2
1.4 论文构成及研究内容2
2 数字式可调稳压电源原理介绍3
2.1 方案选择及总体设计原理介绍3
2.2 单片机AT89S52介绍4
2.3 矩阵式键盘扫描原理5
2.4 数码管动态显示原理6
2.5 DAC0832及24C01使用介绍7
3 数字式可调稳压电源硬件电路设计10
3.1稳压电源数字部分电路10
3.1.1 单片机外围接口电路10
3.1.2 数字部分电路PCB设计15
3.2 稳压电源模拟部分电路16
3.2.1 电源部分电路16
3.2.2 输出电压控制单元电路17
4 数字式可调稳压电源软件设计20
4.1系统软件流程图20
4.2 系统程序介绍22
结论26
参考文献27
致谢28
附录29
