温度报警器课程设计报告.doc
目 录
1引言4
2正文4
第1章 绪论4
1.1 设计背景4
1.2 设计来源4
1.3 设计内容及要求5
第2章 硬件电路设计5
2.1 AT89S52单片机5
2.2 温度测量模块6
2.3 蜂鸣器报警模块6
2.4 LED显示模块6
2.5 系统电路7
第3章 软件设计7
3.1 AT89S527
3.2 DS18B208
第4章 焊接调试过程及问题分析9
4.1 焊接调试过程9
4.2焊接实物图10
第5章 总结11
参考文献11
基于DS18B20单片机温度采集系统
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摘要：随着现代信息技术的快速发展和传统产业转型的逐步实现，温度检测和显示系统可以在许多领域独立工作。传统的温度检测以热敏电阻为温度敏感元件。热敏电阻成本低，需要信号处理电路，可靠性相对较差，温度测量精度低，检测系统存在一定误差。与传统的温度计相比，这种设计是基于DS18B20数字温度计具有读数方便、测温范围广、测温确，数字显示，适用范围广。
选择本设计AT89S采用52型单片机作为主控制器件DS18B20数字温度传感器作为温度测量元件，通过4个共阳极LED数字显示管并行传输数据，实现温度显示。本设计主要分为两部分，一是系统硬件部分的设计，包括温度采集电路和显示电路；二是系统软件部分的设计，采用C语言实现温度采集和显示。通过DS18B20直接读取被测温度值，送到单片机进行数据处理，然后输出显示，最终完成数字温度计的整体设计。系统构成简单，信号采集效果好，数据处理速度快，实际检测使用方便。
关键词：单片机AT89S52、温度传感器DS18B20，LED数字管，数字温度计
Abstract:With the rapid development of modern information technology and traditional industrial transformation gradually realize, able to work independently temperature detection and display system applied to many fields. The traditional temperature detection to thermistors for temperature sensitive components. Thermistors of low cost, need and signal processing circuit, and relatively poor reliability, low temperature measurement accuracy, detection system also has the certain error. Compared with the traditional thermometer, this design is based on digital thermometer chip DS18B20, it has convenient readings, temperature measuring range, temperature measurement precision, the digital display, wide application scope etc. Characteristics.
In the design of AT89S52 single chip microcomputer as the main selection of control device, the digital temperature sensor DS18B20 as temperature sensor, through a total of 4 anode LED digital display tube parallel data transmission, realize temperature display. This design is the main content of the divided into two parts, one is the hardware part of the design, including the temperature acquisition circuit and display circuit; the other is part of the design of the system software, applic