基于单片机的定时温控系统的设计

摘  要
在集成电路技术越来越成熟的情况下单片机的发展也有了翻天覆地的变化。单片机制造初期,需要的成本十分高昂,并且制作工序也是相当的繁杂。但是伴随时间的推移,电子技术经过不断革新,才使今天的单片机性价比变得更高,功能更强。如果这个系统还具有定时功能,它可以解决实际应用中出现的一些问题。这在保证温度准确的同时,更让响应的速度变得快速和及时。温度控制在生产过程当中是非常重要的一个环节,对生产出来的产品的质量有着至关重要的影响。
定时温度控制系统具有的特点:操作简洁、实际应用灵活度高、在运行中更加稳定。尽管现在市面上单片机的种类多,每一种都有自己的特色,但是近年来还是AT89C51为核心的单片机应用最为广泛。此次系统主要应用的是AT89C51型单片机。温度传感器DS18B20负责对温度信号的收集。DS18B20温度传感器可以将被控制对象的温度改变为数字量,并将其反馈到AT89C51微控制器。硬件部分被我们分为实时温度测量电路、温度智能控制电路和多个接口电路。单片机对相应的信号进行处理之后,就可以实现控制信号的目的。软件部分为了更具条理性,采取模块化的方法进行实现设计,模块分别为数码管显示模块、主扫描和主处理模块、温度信号处理模块、继电器控制和高温报警等模块。
在日常生活中处处可见单片机的身影,小到风扇、热水器,大到空调、洗衣机。我们的生活在无形之中发生着变化,我们的生活方式也在悄悄地变化着。并且我们对它的依赖也是愈加的严重。单片机的集成度高,性能好,通过在外围拓展一些简单的电路就能实现我们想要的功能。我们应该继续开发,研究出比现有的在性能等其他各方面都更加强大的单片机,我们也只有不停的探索才会有进步。

关键词:AT89C51单片机  DS18B20温度传感器  DS12887时钟芯片

Abstract
As the integrated circuit technology becomes more and more mature, the development of the SCM has also undergone tremendous changes. In the early days of the manufacture of SCMs, the cost required was very high, and the production process was quite complicated. However, with the passage of time, electronic technology through continuous innovation, it makes today's SCM cost-effective and more powerful. If the system also has a timing function, it can solve some problems in practical applications. This ensures that the temperature is accurate, but also makes the response faster and more timely. Temperature control is a very important part of the production process and has a crucial influence on the quality of the products produced.
Timing temperature control system has the characteristics of simple operation, high practical application flexibility, and more stable in operation. Although there are many kinds of MCUs on the market, each one has its own characteristics, but in recent years, AT89C51 is the most widel

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