摘 要本次系统设计是以 AT89C51 单片机以及 DS18B20 温度传感器为硬件基础的多点温度测量系统。以 51 单片机为主控模块,完成各个测点的准确温度测量,并添加了温度数值显示以及温度提醒等。保持显示模块 LCD1602A 以进行识别和显示。LCD1602A 作为液晶显示器 ,形象直观的显示测出的温度值。选取DS18B20 作为温度数据采集端,对测点实施有效温度测定,该传感器模块精度较高,误差在 0.1℃范围内。此文首先在绪论中详细的介绍了此系统的发展背景以及使用的功能及其意义。第二章确定设计方案。在第三章论述了总体的设计过程,确定了技术指标和元件的选择进行了设计中的硬件框图设计、硬件电路设计及所系统中各种芯片功能与使用方法。第四章则着重分析了设计的每个过程。最后一章是对系统设计过程中的软件以及调试环节进行了具体阐述。多点温度测定是基于 AT89C51 完成开发,具备模块构造简单和多点温度检测功能、数字显示、精准度高、使用范围广范的特点,在实际的生产、生活中得到广泛应用。关键词:数字温度传感器,AT89C51 单片机,单总线 AbstractThe system mainly uses a distance-free multi-point temperature measurement system based on AT89C51 single-chip microcomputer and DS18B20 temperature sensor. The system uses AT89C51 single-chip microcomputer to sequentially detect the temperature of each monitoring point to realize the functions of temperature detection, display and overheating. The system mainly uses the single-chip AT89C51 microcomputer as the control core of the main system. The display module LCD 1602A is held for identification and display. LCD1602A is used as a liquid crystal display to visually display the measured temperature value. The digital temperature sensor DS18B20 is used to detect the temperature of each channel, and the monitoring accuracy can reach 0.1 °C. This article first introduces in detail the development background of the system and the functions used and its significance in the introduction. The second chapter determines the design. In the third chapter...