文档介绍：基于单片机的医用恒温箱的设计
摘要
随着智能控制技术的不断发展,在现代工农业生产以及科研实验的许多场合,需要及时准确地获取温度信息,并完成对温度的预期控制。单片机在检测和控制系统中得到广泛的应用,温度则是系统需要测量、控制和保持的一个量。因此,对温度系统的设计与研究一直备受广大科研工作者的重视。
本设计是基于AT89C52单片机的恒温箱控制系统,系统分为硬件和软件两部分,其中硬件包括:温度传感器、数码管显示、控制和报警的设计;软件包括:键盘管理程序设计、数码管显示程序设计、控制程序设计和温度报警程序设计。编写程序结合硬件进行调试,能够实现设置和调节初始温度值,进行数码管显示,当加热到设定值后立刻报警。另外,本系统通过软件实现对按键误差、加热过冲的调整,以提高系统的安全性、可靠性和稳定性。本设计从实际应用出发选取了体积小、精度相对高的数字式温度传感元件DS18B20作为温度采集器,单片机AT89C51作为主控芯片,数码管作为显示输出,实现了对温度的实时测量与恒定控制。
文章从硬件和软件两方面介绍了80C51单片机温度控制系统的设计,对硬件原理图和程序图作了简洁的描述。此次设计的温度控制系统主要是由中央控制器、温度检测器、显示器等模块组成。温度检测部分采用DS18B20温度传感器,用LED数码管做显示器。温度传感器DS18B20采集温度信号送给单片机,单片机对信号进行相应处理,并把温度数据送LED显示,从而实现对温度控制的目的。
关键词:80C51单片机;恒温箱;温度控制
Design for Constant Temperature System Of Intelligent Based on MCU System
Abstract
With the continuous development of intelligent control technology, it is necessary to know temperature information correctly and immediately in modern industry, agriculture, research and experiment, and plish control to the temperature. Thus MCU get wide application in measurement and control system. Temperature is a number which needs system to detect, control and keep. Therefore many researchers always attach much importance to the design and research of temperature system.
Taking a strong function 8 bit MCU—80C51 which is introduced by pany for core, temperature-automatic control system aims to design a temperature controller for grain situation witch has those functions: flexible temperature set, figure display, voice alert, etc. After modified, it can be used to control other numbers .
The paper gives an introduction about the design of MCU-80C51 temperature control system in software and hardware. The paper also briefly describes the hardware schematic graphic and program chart. The temperature control system of this design is posed by central controller, temperature detector, display, etc. in the temperature detecting part, it adopts temperature sensor DS18B20, and displays with LED digital tube. The temperature sensor DS18B20 capt