基于单片机温度测量的系统设计..docxVIP

摘要温度控制是工农业自动控制的重要组成部分,在工业、电子、农业、化工精度实验等诸多领域都有重要的应用,而温度测量又是温度控制当中重要的一环。将现场温度控制在一定范围内,是在各种实际应用的重要保证和前提。因此温度控制系统在工农业控制领域中十分重要。本文“智能温度报警器研究与设计”,主要研究的以一个单片机为控制核心的温度自动测量系统。论文研究了温度报警器,他的测温部分采用了美国Dallas半导体公司的DS18B20一线式数字式温度传感器。该传感器的特点是把温度采集、A/D转换和数据的串行通讯集成为了一体,由于其体积小,并具有单总线的独特优点,可以使用者轻松地组建起传感器网络,并可使多点温度测量电路变得简单、可靠[1]。论文中同时也阐述了DS18B20数字温度传感器在ATMEL公司生产的AT89C51单片机下的硬件连接方法,并画出了软件设计思路流程图、解释了相关汇编程序。同时采用了QX039串行LED显示器来显示测控温度。本论文中设计的温度报警器它是用汇编程序来完成测温功能的调用,可以用来实现用户设置上下限温度,当温度超过上下限时有自动报警功能,它是在传统电路控制基础上的进一步改进,同时解决了以繁琐的电路实现对温度测量控制方面的问题。此系统的设计可应用于仓库测温、大棚温度控制和生产过程监控等领域,将来也可以应用到人们工作和生活的各个角落,有力地推动各行业的技术改造和产品的更新换代,相信会有十分好的应用前景。关键字：AT89C51单片机 DS18B20温度传感器温度测量 报警ABSTRACTTemperature control is an important part of agricultural and industrial automatic control, in industry, precision electronics, agriculture, chemical experiment, and many other fields has important applications, temperature control and temperature measurement is an important part of. The field temperature control within a certain range, is the important guarantee and premise in various practical applications. So the temperature control system is very important in the field of industrial and agricultural control. In this paper, research and design, smart temperature alarm, the main research with a single chip microcomputer as the control core of automatic temperature measuring system. Paper studies the temperature alarm, his temperature part adopts the Dallas semiconductor companies in the United States of digital temperature sensor DS18B20 a line type. The sensor is characteristic of the temperature acquisition, A/D conversion of serial communication and data integration for an organic whole, because of its small size, and has the distinct advantage of the single bus, users can easily establish A sensor network, and can make multi-point temperature measurement circuit is simple and reliable. Paper also expounds the DS18B20 digital temperature sensor under the AT89C51 of ATMEL company produces hardware connection methods, and