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《数控步进稳压电源》

数控步进直流稳压电源的设计与制作

摘要

随着电子技术的发展，人们对电子产品的精确度与灵活性要求越来越高，其中电子产品中电路对电源的要求也越来越高，可调电源由原来的手动调节开始转变成现如今的步进控制，步进精度可以达到0.1V以下，输出电压范围0~15V，电流可以达到2A。

本文介绍的数控直流步进稳压电源是以AT89S52单片机为控制核心，通过AD/DA转换来步进控制输出电源，并以12864液晶显示器作为显示模块，显示输出电压、电流与功率数值得大小。

关键词：直流稳压电源；单片机；数控；DAC0832；ADC0809；故障报警

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Abstract

With the development of electronic technology, people on the accuracy of the electronic products and flexibility

requirement more and more high, including electronic products to the requirements of the power supply circuit more and more is also high, adjustable power from the original manual adjustment is beginning to change into the nowadays stepping control, step precision can reach 0.1 V the following, output voltage range 0 ~ 15 V, current can be to reach 2 A. This paper introduces the numerical control dc step voltage stabilizer AT89S52 SCM is as control core, through the AD/DA conversion to stepping control output power, and with 12864 LCD

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display module as shows that the output voltage, current, and power worth size number.

Keywords: dc voltage stabilizer; SCM; Numerical control; DAC0832; ADC0809; Fault alarm

目录

摘要 .................................................................................................................................................. 1 Abstract ........................................................................................................................................ 2 第一章 方案比较与设计 ............................................................................................................ 5 1.1设计题目及要求 ................................................................................................................... 5 1.2方案比较与选择 ................................................................................................................... 5 1.2.1 控制电路方案比较与选择 .............................................................................................. 5 1.2.2 显示电路方案比较与选择 ................................................................................................ 7 1.3 方案设计与论证 ................................................................................................................... 8 1.3.1整体电路的设计 ............................................................................................................... 8 1.3.2总体电路组成框图 ............................................................................................................. 8 第二章 电路设计、理论分析 .................................................................................................... 9 2.1主要电路模块的分析计算与设计 ....................................................................................... 9 2.1.1控制、稳压电路 ............................................................................................................... 9 2.1.2主控电路 ........................................................................................................................... 10 2.1.3显示电路 ........................................................................................................................... 11 2.1.4电源电路 ........................................................................................................................... 11 2.1.5 报警电路 .......................................................................................................................... 12 2.1.6 按键部分 .......................................................................................................................... 13 2.2 软件设计 ............................................................................................................................ 13 2.2.1程序流程图 ..................................................................................................................... 13 第三章 测试数据与结果分析 .................................................................................................. 15 3.1题目要求的测试 .................................................................................................................. 15 设计总结 .................................................................................................................................... 17

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