基于单片机的电压测量人机界面设计_毕业设计 天津职业技术师范大学.docxVIP

基于单片机的电压测量人机界面设计Design of voltage measurement man-machine interface based on MCU摘 要随着科技的快速发展，电子检测技术发展很快,单片机技术现在已渗透到我们生活的许多领域，几乎很难找到哪个领域没有单片机的踪迹，由此可见单片机的应用对我们的工作生活已越来越重要了，为了更好的从事以后的工作，所以我们更需要很好的运用它掌握它。在现实的生活中电压测量是故障诊断中最常使用并且也非常有效的检测方法。因此拥有一块好用精良的电压表对我们日后的工作生活都是非常有好处的。此设计制作了一种基于Atmega16单片机的电压测量表,它实现数字电压表的硬件电路与软件设计, 该系统的数字电压表电路相对简单,所用的元件相对较少,成本较低,实用性比较强，可以测量范围0～24V的电压值,并将测量的电压值显示在液晶显示器12864上，此设计并还带有密码登陆、修改密码、设定电压上下限和报警等功能。此文首先介绍关于此设计的背景意义和设计实现的功能。然后介绍设计中用到的单片机的功能特性以及液晶显示器的选择功能特征。最后进行电压表的硬件设计软件编程等。关键词：Atmega16；单片机；电压；液晶显示器12864ABSTRACTWith the rapid development of Chinas modern technology, electronic detection technology has been developed very fast, single-chip technology has penetrated many areas of our lives, almost difficult to find which areas no traces of the microcontroller, visible microcontroller applications of our work lifehas become increasingly important, so in order to better engage in future work, we need more good use of it.The voltage measurement in real life is the most commonly used and very effective detection method in fault diagnosis. Have a good voltmeter to our work life are very good. Design a Atmega16 microcontroller-based voltage measurement hardware circuit and software design, digital voltmeter digital voltmeter circuit is simple, with fewer components, low cost, practical, strong, 0 to 24V voltage value can be measured, and the measured voltage value is displayed in the LCD 12864, with password login, change your password, set upper and lower limits of the voltage and alarm functions.This article first introduces the background meaning and design and implementation of design features. And then describes the functions of the MCU used in the design and the choice of the liquid crystal display. Last voltmeter hardware design.Keywords:ATmega16;microcontroller;voltage;LCD 12864目 录1 引言11.1设计的背景及意义11.2发展历史及研究现状21.3 数字电压测量的原理32 设计总体方面42.1设计要求42.2 设计实现功能42.3单片机的选型52.4设计方案63 数字电压表的简介73.1数字电压表的特点73.2用于数字电压表内的AD转化器分类83.3单片机内的A/D转换器结构和性能84主要元器件简介及