根据单片机单总线多点温度测控系统.doc

18 - 摘 要 本课题主要介绍基于AT89C51单片机和DS18B20数字温度传感器的多点温度测量系统。该系统利用AT89C51单片机分别采集各个温度点的温度，实现温度显示、报警等功能。它以AT89C51单片机为主控制芯片,采用数字温度传感器DS18B20实现多路温度的检测,测量精度可以达到0.5℃。该系统采用了LCD1602A液晶显示模块，LCD1602A作为显示器 ,形象直观的显示测出的温度值。本文首先在绪论中介绍了此系统的背景以及功能。第二章确定设计方案。在第三章论述了总体的设计过程，确定了技术指标及器件的选择并且描述了系统硬件电路设计、硬件设计框图及所使用的各种芯片功能与特性。第四章重点剖析了软件设计的过程。最后一章中具体论述了系统的调试软件及调试中出现的问题。基于AT89C51单片机的单总线多点温度测控系统具有硬件组成简单、多点温度检测、读数方便、精度高、测温范围广等特点，在实际工程中得到广泛应用。 关键词：数字温度传感器，AT89C51单片机，单总线 Abstract The problem introduces AT89C51 monolithic machine and the DS18B20 figure temperature sensor-based multiple spot temperature measurement system mainly. AT89C51 single chip using the system were collected at various temperatures of the temperature, temperature display and alarm functions. It AT89C51 MCU-based control chip, digital temperature sensor DS18B20 the realization of multi-channel temperature detection, measurement accuracy can reach 0.5 ℃. The system uses LCD1602A liquid crystal display modules,LCD1602A as a display, the display of visual images to measure the temperature. This article first described in the introduction of this system, as well as background features. The second chapter to determine the design. In the third chapter discusses the overall design process to determine the technical specifications and the choice of devices and a description of the hardware circuit design, hardware design and diagram used in a variety of features and functions of the chip. Chapter IV analyzes the key software design process. The final chapter discusses the specific system debugging and debug software problems. AT89C51 single chip based on single-bus multi-point temperature measurement and control system with simple hardware components, multi-point temperature, easy reading, high-accuracy, wide temperature range, and other characteristics of the actual projects are widely used Key words：digital temperature sensor, AT89C51 single chip, single-bus 目录