温度传感器原理研究及应用设计.docVIP

温度传感器的原理研究及应用设计 摘 要 温度传感器是检测温度的器件，它是利用一些金属、半导体等材料与温度相关的特性制成的。目前，温度传感器已被广泛应用于工农业生产、科学研究和生活等重要领域。因此，有关温度传感器的研究不仅具有重要的理论意义和科学价值而且具有广阔的应用前景。本文第一部分主要阐述了各种温度传感器的工作原理及其应用。第二部分先着重分析了热敏电阻中的负温度系数热敏电阻(NTC)的电阻—温度特性；然后对AD590的基本结构、主要性能以及基本工作原理进行了阐述，介绍了该器件在温度检测中的应用设计。AD590是AD公司利用PN结正向电流与温度的关系制成的电流输出型两端温度传感器。NTC热敏电阻作为一种灵敏度高和分辨率高、可靠性好、热响应特性好、体积小，适于批量生产的元件，多年来一直受到电子电器行业的欢迎。 关键词：温度传感器， THE PRINCIPLES STUDY AND APPLICATION DESIGN OF TEMPERATURE SENSOR ABSTRACT Temperature Sensor is the device of detecting the temperature, it is made of some metals, semiconductors and other materials related to the temperature．At present the temperature sensor has been widely used in industrial and agricultural production, scientific research and other important areas of life．Thereforethe temperature sensor not only has important theoretical significance and scientific value and broad application prospects．This paper describes the first part of the major works of various temperature sensors and its applicationThe second part analyzes the thermal resistance of the first in the negative temperature coefficient thermistor(NTC) of resistance-temperature characteristics; then the basic structure of the AD590,the main performance ,and describes the basic working principle is introduced in the temperature of the device Detection of design．AD590 AD companies use the PN junction is forward current with temperature at both ends made of the current output-type temperature sensor．NTC theistor as a high sensitivity and high resolution，reliability，and thermal response characteristics of a good， small size，suitable for mass production of components，has been welcomed by the electrical and electronic industries． KEY WORDS: temperature sensor, thermistor, temperature control circuit, temperature measurement circuit 目 录 前 言 1 第一章 常见温度传感器 3 §1.1 铂电阻 3 §1.2 PN结温度传感器 4 §1.3 集成温度传感器 5 §1.3.1 电压型集成温度传感器(LM35) 5 §1.3.2 电流型集成温度传感器(AD590) 6 §1.4 热敏电阻温度传感器 8 第二章 NTC负温度系数热敏电阻的应用开发 10 §2.1 NTC负温度系数热敏电阻R-T特性 12 §2.2 NTC热敏电阻的电阻测量