1、I 数字式温度控制仪 摘 要 温度是工业生产和科学实验中的重要参数之一。在化工、 冶金、 医药、 航空等领域里，对温度的控制效果直接影响到许多产品的质量及使用寿命， 因此，温度控制成为各个领域中的一项关键技术。温度控制的关键在于测温 和控温两方面，温度测量是温度控制的基础。在温度测量方面，技术己经比 较成熟，由于控制对象越来越复杂，而在温度控制方面，还存在着许多问题， 人们还在寻找着更好的控制方法以提高控制性能，满足不同的控制要求。 随着时代的进步和发展，单片机技术已经普及到我们生活，工作，科研， 各个领域，已经成为一种比较成熟的技术,本文将介绍一种基于单片机控制的 恒温锅炉烧水控制系统。 本
2、系统以 AT89C51 单片机为控制核心，采用闭环控制装置，可自动控制 要求环境下的温度，使被控对象温度保持在恒定的范围内。本系统温度信号 由数字温度传感器 DS18B20 采集，送 AT89C51 单片机进行处理，并通过数 码管显示。当温度低于或者高于设定值后，单片机将发出控制信号控制温度 控制系统的通断电状态，以实现将温度稳定在目标温度至附近的要求。 关键词：单片机，闭环控制，DS18B20，温度，数码管 II THE DIGITAL TEMPERATURE CONTROL METER ABSTRACT The temperature is industrial production an
3、d scientific experiments of one of the important parameters. In the chemical industry, metallurgy, medicine, aviation and other fields, for the control of the temperature effect directly affect the quality of the many products and service life, therefore, temperature control in various areas of beco
4、me a key technology. Temperature control key lies in the two aspects of the temperature, temperature measurement is the basis for the control of temperature. In temperature measurement, technology has been more mature, to control the object more and more complex, and the temperature control, there a
5、re many problems, people are still looking for a better control method to improve the control performance, meet different control requirements. With the progress of The Times and development, microcontroller technology has spread to we live, work, scientific research, each domain, has become a matur
6、e technology, this paper introduces a kind of based on single chip microcomputer control constant temperature boiler heating water control system. This system to AT89C51 as control core, the closed-loop control device, it can automatic control requirements of the environment temperature, make be controlled object a constant temperature range. This system temperature signal by digital temperature sensor DS18B20 acquisition, send AT89C51 for processing, and through the digital pipe display. Whe
