摘要：随着社会的进步和工业技术的发展，人们越来越重视温度因素，许多产品对温度范围要求严格，而目前市场上普遍存在的温度检测仪器大都是单点测量，同时还有温度信息传递不及时、精度补够的缺点，不利于工业控制者根据温度变化及时做出决定。在这样的形式下，开发一种能够同时测量多点，并且实时性高、精度高，能够综合处理多点温度信息的测量系统就很有必要。设计了一种基于51单片机的低功耗温度采集系统。该系统能实时采集环境温度，并在LCD上显示出来，并可以存储一定量的温度数据。此外，该设计方法将看门狗监控电路与降低功耗结合在一起，在降低系统功耗的同时提高了系统的可靠性。在论文的开始，介绍了以单片机为核心的温度采集系统的背景、发展现状等。论文详细介绍了系统各组成部分的工作原理及电路的设计情况，软件仿真，系统程序及调试过程和结果。21529
毕业论文关键词: 温度；STC89C52单片机；报警；采集
Multi-point Temperature Acquisition System Abstract
Abstract：Along with society's progress and the development of industrial technology, people pay more and more attention to the temperature factor, many products strict in temperature range, and the common temperature testing instrument on the market at present are mostly single point measurement, as well as the temperature information timely and accuracy is not enough, is not conducive to industrial controller according to the temperature change in a timely manner to make a decision. In such a form, to develop a can simultaneously measuring multi-point, and high real-time performance, high precision, be able to deal with the multipoint temperature information integrated measurement system is very necessary. This paper introduces the design and implementation of a low-power portable thermometer. We design a low-power temperature acquisition system based on 51 single chip microcomputer. The system can collect real-time temperature and displayed on the LCD, and can store a certain amount of temperature data. In addition, the design method combines watchdog monitoring circuit and reducing power consumption, to reduce the system power consumption at the same time improve the reliability of the system. In the beginning of the thesis, with the single chip processor as the core temperature gathering system are introduced the background, development status, etc. Thesis detailed introduces the system of the working principle of each component and circuit design, software simulation, system programming and debugging process and result.
Key Words： Temperature; STC89C52 single-chip microcomputer; Call the police; collect
 目  录

1 绪论    1
1.1    课题的背景    1
1.2    研究发展现状及其研究意义    3
2 系统的设计思路    5
2.1 系统的设计思想和工作原理    5
2.2 设计功能要求    5
2.3 系统总体设计方案    5
3 系统硬件介绍    7
3.1 硬件组成    7
3.2 STC89C52单片机介绍    7
3.1.1  STC89C52单片机功能介绍    8
3.3 DS18B20数字温度传感器介绍    10
3.3.1功能介绍    10
3.3.2 DS18B20温度传感器是存储器    12
3.3.3 DS18B20内部逻辑图    13
3.3.4 DS18B20温度传感器读写时序    14
3.3.5 DS18B20存储器操作命令    16
3.4蜂鸣器发声电路模块介绍    17
4 系统应用软件    18
4.1 Keil uVision4软件的简介    18
4.2 Altium designer软件的简介    19 STC89C52单片机多点温度采集系统设计+电路图:http://www.751com.cn/zidonghua/lunwen_13778.html