基于STC89C52单片机温度控制电路设计论文.doc

PAGE 本科生毕业论文（设计） 题目： 基于温度传感器的单片机温控电路设计 基于温度传感器的单片机温控电路设计 摘 要 随着微处理器和大规模集成电路的发展,及其在测试控制技术方面的广泛应用，仪器设备的智能化已成为自动化技术发展方向，数据采集与温度检测的自动化将取代传统的方法。 本设计采用STC89C52型号的单片机，数字温度传感器采用美国DALASS公司的1–Wire器件DS18B20，即单总线器件DS18B20，与单片机组成一个测温系统，当系统上电时，温度传感器就会读出当前环境的温度，并在LED数码显示管上显示出当前的温度，该测温系统的测温范围为-40℃～110℃ 关键词：单片机 温度传感器DS18B20 测量电子线路 温度 ABSTRACT Along with the microprocessor and large scale integrated circuit, and in the test control technology is widely used, and the intelligent instrument and equipment has become automation technology development direction, data acquisition and temperature automatic testing would replace the traditional method. This design uses the STC89C52 type of single chip microcomputer, digital temperature sensor using the American DALASS company 1-Wire device DS18B20, namely single bus device DS18B20, and consists of a single chip microcomputer temperature measurement system, when the system is powered on, temperature sensors will read the current environment temperature, and in display tube LED digital showed on the current temperature, the temperature measurement system of measuring temperature range for 40 ℃~110 ℃-according to this design requirement for hardware and software to achieve this function. Keywords: single chip microcomputer temperature sensor DS18B20 measurement circuit temperature 目 录 TOC \o 1-3 \h \z \u HYPERLINK \l _Toc325485224 一 绪论 PAGEREF _Toc325485224 \h 1 HYPERLINK \l _Toc325485225 1.1 课题研究背景及意义 PAGEREF _Toc325485225 \h 1 HYPERLINK \l _Toc325485226 1.2 国内外研究现状 PAGEREF _Toc325485226 \h 2 HYPERLINK \l _Toc325485227 1.3 研究内容 PAGEREF _Toc325485227 \h 2 HYPERLINK \l _Toc325485228 二 系统硬件设计 PAGEREF _Toc325485228 \h 3 HYPERLINK \l _Toc325485229 2.1 总体设计方案 PAGEREF _Toc325485229 \h 3 HYPERLINK \l _Toc325485230 2.1.1 设计思路 PAGEREF _Toc325485230 \h 3 HYPERLINK \l _Toc325485231 2.1.2 设计方框图 PAGEREF _Toc325485231 \h 3 HYPERLINK \l _Toc325485232 2.2 单片机介绍 PAGEREF _Toc325485232 \h 3 HYPERLINK \l _Toc325485233 2.2.1 STC单片