基于单片机的温度测量系统设计.doc

基于单片机的温度测量系统设计 摘要 在工业生产中，温度是最基本的检测参数之一，温度的检测和控制直接和安全生产、产品质量、生产效率、节约能源等重大技术指标相联系。随着现代信息技术的飞速发展，温度测量控制系统在工业、农业及人们的日常生活中扮演着一个越来越重要的角色，它对人们的生活具有很大的影响，所以对温度的测量采集控制系统的设计与研究有十分重要的意义。而随着半导体技术的发展，以单片机为主题，将计算机技术与测量控制技术结合起来组成的智能仪表在生产中得到了广泛的应用。 数字式多路温度采集系统主要由主控制器、温度的采集电路、温度的显示电路、报警控制电路以及键盘输入控制电路组成。它利用单片机AT89C51做为它的控制及数据处理器、智能温度传感器DS18B20做温度检测器、LED数码显示管做温度显示输出设备，可通过键盘进行简单控制，并具有报警功能。它有如下几个明显的优点：硬件电路结构比较简单，制作成本较低，测量温度范围大，测量出的温度数据精度高，不仅读数显示直观，而且使用方便，具有较强的实用价值。 关键词　数字；温度；测量；单片机；传感器 The design of temperature measurement system based on single chip microcomputer Abstract In industrial production, the temperature is the most basic one of the testing parameters, temperature detection and control of direct and safe production, product quality, production efficiency, energy conservation and other major technical indicators linked. With the rapid development of modern information technology, temperature measurement and control system in industry, agriculture and peoples daily life plays an increasingly important role in peoples daily life, it has a great impact, so the measurement for temperature acquisition and control system design and research are very important. With the development of semiconductor technology, takes the SCM as the subject, computer technology and measurement control technology which is combined of intelligent instrument in production to be widely applied. Digital multi-channel temperature acquisition system mainly consists of main controller, the temperature collection circuit, a temperature display circuit, an alarm control circuit and a keyboard input control circuit. It uses single-chip AT89C51 as its control and data processor, intelligent temperature sensor DS18B20temperature detector, the LED digital display tube temperature display on an output device,can be controlled by the keyboard,and with the function of warning. It has the following advantages: the hardware circuit has the advantages of simple structure, low production cost, wide range of temperature meas