涂布烤箱恒温系统的设计(含电路图,程序清单)(论文14400字)
摘 要
随着电子技术的飞速发展。设计该系统为了增加系统的通用性,并且能够有效地对温度数据进行采集放大。
本设计是基于单片机的涂布烤箱恒温操控系统。
关键词 单片机 温度传感器 热电偶
Abstract
With the rapid development of electronic technology, automatic control, intelligent instruments, the wide application of smart home, to the society brought great changes. The development of SCM technology to the intelligent instrument, intelligent home injected new vitality. Advantages of single chip micro computer functions more powerful, Xu high performance of the new models continue to emerge. Microcontroller with its function strong, small volume, high reliability, low cost and development cycle short, become automatic control device which is widely used in the field[11].
The design is based on SCM coating oven temperature control system. The system design in order to increase the system's versatility, choose the most commonly used K type thermocouple temperature sensor, and can effectively the temperature data acquisition and amplification. Therefore, signal conditioning circuit chip ad595 as the core, to improve the measurement resolution and signal conversion with 8 bit resolution, 7-bit accuracy of 8 bit a / D converter ADC0809, the temperature input data processing, constitute the output control circuit using AT89C51 and udn2987lw chip, to realize the control of the heating device and fan, the realization of digital control Temperature display instrument of a CPU chip by. Currently the most popular, low price but mature technology AT89C51, keyboard control of the instrument, using a display interface circuit is simple and applicable. This topic is the design of coating oven thermostatic control system has the advantages of simple structure, cheap price, wide range, has high reliability, safety and practicability[12].
Keywords Single chip temperature sensor thermocouple
系统基本综述
根据第一章的设计研究的主要内容,成为自动化操控领域广泛应用的器件。本课题设计的涂布烤箱恒温操控系统的结构简单、价格便宜、量程宽、有较高的可靠性、安全性及实用性。因为本系统的多路要求而应该设置多路开关,本系统需要满足涂布烤箱内部的温度采集和温度操控,本系统的原理结构框图如图2-1所示:从上图可以得出温度测量和操控系统是以单片微型计算机为中心的,数码管正常测量时巡回显示各路温度的实时测量值;箱内的温度操控通过单片机操控加热装置和风扇的电源通断实现
目 录
摘要 I
Abstract II
第1章 绪论 1
1.1 课题背景 1
1.2 研究现状 1
1.3 主要研究内容和方式 2
1.4 本文结构安排 2
第2章 系统总体设计方案 3
2.1系统基本综述 3
2.2系统主要设计方案分析 3
2.3系统的工作原理 4
第3章 系统硬件设计 7
3.1 电源电路设计 7
3.2 单片机最小系统 7
3.3 温度采集和操控电路设计 8
3.4 按键电路设计 12
3.5 显示电路设计 13
第4章 软件设计 15
4.1 主程序设计 15
4.2 恒温程序设计 16
4.3 键盘程序设计 18
4.4显示程序设计 22
第5章 系统调试和抗干扰分析 24
5.1调试步骤 24
5.2硬件调试 25
5.3软件调试 26
5.3抗干扰性分析 26
结 论 29
致 谢 30
参 考 文 献 31
附 录 32