烤箱温度控制系统

文档编号:JD771 文档字数:18149,页数:53

摘  要
   温度是日常生活中无时不在的物理量，温度的控制在各个领域都有积极的意义。很多行业中都有大量的用电加热设备，如用于热处理的加热炉，用于融化金属的坩锅电阻炉及各种不同用途的温度箱等，采用单片机对它们进行控制不仅具有控制方便、简单、灵活性大等特点，而且还可以大幅度提高被控温度的技术指标，从而能够大大提高产品的质量。因此，智能化温度控制技术正被广泛地采用。
烤箱温度智能设计采用现在流行的AT89S51单片机，配以DS18B20数字温度传感器，该温度传感器可自行设置温度上下限。单片机将检测到的温度信号与输入的温度上、下限进行比较，由此作出判断是否启动继电器以开启设备。
本设计还加入了常用的数码管显示及状态灯显示灯常用电路，使得整个设计更加完整，更加灵活。
关键词  温度箱；AT89S51；单片机；控制；模拟；系统

Abstract
     The temperature is constantly in the daily life of physical and temperature controls in various fields have a positive meaning. A lot of businesses have a lot of power heating equipment, such as that used for the heat treatment furnace, for melting metal crucible resistance heaters and the various uses of temperature bins, SCM using their right to control not only easy to control, simple, such as the characteristics of flexibility, but can also significantly increase the temperature was charged with the technical indicators, which can greatly enhance the quality of the products. Therefore, intelligent temperature control technology is being widely adopted.
The temperature was designed with the now popular AT89S51 SCM, and with DS18B20 digital temperature sensor, The temperature sensor can set up their own temperature collars. SCM will detect that the temperature of the input signal and temperature, the lower comparisons this judgment whether to activate the relay to open the equipment.
The design also includes commonly used digital display and control state lights commonly used circuit, making the whole design more complete, more flexible.
Key word:  Temperature; AT89S51; SCM; Control; Simulation; System

目录
摘  要 - 1 -
Abstract - 2 -
第一章 绪论 - 3 -
1.1课题提出的背景 - 3 -
1.2国内发展状况 - 4 -
1.3课题研究的意义 - 5 -
第二章 系统硬件设计 - 5 -
2.1方案的选择 - 5 -
2.2器件选择和各个部分模块电路设计 - 6 -
2.2.1单片机的选择 - 6 -
2.2.2 AT89S51介绍 - 6 -
2.2.3单片机工作的最小系统 - 8 -
2.2.4 温度传感器的选择 - 11 -
2.2.5显示电路设计 17
2.2.6报警电路设计 18
2.2.7温度增加减少控制电路 19
2.2.8程序下载电路 22
第三章 软件设计 24
3.1编程语言的选择 24
3.2系统软件设计的整体思想 24
3.2.1系统程序流程图 25
3.3编程工具 33
第四章 系统的功能调试 38
4.1硬件调试 38
4.2软件调试 38
第五章 结论 40
致谢 41
参考文献 42
附录一  原理图和PCB图 43
附录二  完整程序 44

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