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现在科学技术领域中用到了各种各样的传感器。所谓传感器是指能感受规定的被测量并按照一定的规律转换成可用信号输出的器件或装置,通常由敏感元件和转换元件组成,现介绍几种敏感元件的定义: 1)热敏元件 电参量随着外界温度变化而明显改变的敏感元件,分为热电偶、热敏电阻器两大类。热敏电阻是电阻值随其电阻体温度的变化而明显改变的电阻元件。
A variety of sensors are now used in science and technology. The so-called sensor is able to feel the provisions of the measured and in accordance with certain laws converted to the available signal output devices or devices, usually composed of sensitive components and conversion components, are introduced the definition of several sensitive components: 1) thermal sensor electrical parameters As the external temperature changes and significantly change the sensitive components, divided into thermocouples, thermistor two categories. A thermistor is a resistance element whose resistance changes significantly with the temperature of a resistor.