电炉控温系统设计.doc

电炉控温系统设计 白荣腾 摘 要 本论文介绍了以AT89S52单片机为核心的温控系统设计，采用温度传感器和固体继电器控温电路，实现对电炉温度的控制。采用基于PWM控制的温控系统的设计和实现方法，采用5档控制: 最大档、较大档、中间档、较小档Abstract This paper introduces a temperature control system that is based on the AT89S52 single-chip microcomputer,and the temperature control of electric furnace is realized by temperature sensor and a temperature control circuit of solid state relay. The design and implementation of the temperature control system based on PWM control uses five different scopes : the biggest scope, the bigger scope, the center scope, the smaller scope, minimum scope, and controlling method is simple and practical.The temperature control system consists of AT89S52 single-chip microcomputer, cortege type keyboard unit , display unit and temperature control circuit of solid state relay，using microprocessor AT89S52 to collect and control temperature in real time. The temperature control system based on Single-Chip Microcomputer is described in the article including system scheme, hardware and software system testing ,and it also goes with debug routine, essential flow chart and circuit diagram.In this part , The hardware composition and software design are described in detail parameters． The temperature control system can control the temperature of electric furnace with debugging ,and make it keep in the enacted value.This control system has such advantages as low cost、high control accuracy、good reliability and so on. Keywords：Electric furnace ;Temperature control; Single-Chip Microcomputer ;Solid state relay 目 录 摘 要 I Abstract II 0前言 1 0.1文献综述 1 0.2本课题研究的背景及意义 2 0.3本课题研究的主要思路 3 1系统硬件设计 4 1.1中央处理器电路 4 1.2系统电源电路 5 1.3温度采集电路 6 1.4 固体继电器及其驱动电路 10 1.4.1 固体继电器介绍 10 1.4.2固体继电器驱动电路与工作指示电路 10 1.5显示与报警电路 11 1.5.1显示电路 11 1.5.2报警指示电路 13 1.6 按键控制电路 13 2系统软件结构设计 14 2.1键盘管理模块 15 2.2温度检测模块 16 2.3温度控制模块 18 3系统调试 19 3.1硬件与软件调试 19 3.2系统功能实现 20 总结 21 参考文献 22 致 谢 23 附录A 系统设计原理图 24 附录B 系统实物图 25 附录C 系统程序 26 附录D 英文文献1原文 30 附录E 英文文献1翻译 34 附录F 英文文献2原文 38 附录G 英文文献2翻译 40 附件1 毕业设计任务书 43