一、概述温度是表示物体冷热程度的物理量,是工业生产中最常用的参数之一。温度的测量和控制对保证产品质量、提高生产效率、节约能源、生产安全、促进国民经济的发展起到非常重要的作用。近年来,随着家用电器、日用装置(包括汽车和防火装置)的自动化、无公害、节能运动的日益发展,特别是微控制器的应用,对各类传感器的需求更是大量增加,在30多种常用物理量的测量传感器中,对温度传感器的需要量占首位,大约占50％左右。温度传感器是通过物体随温度变化而改变某种特性来间接测量的。温度传感器随温度变化 First, an overview of the temperature is a physical quantity that represents the degree of hot and cold objects, industrial production is one of the most commonly used parameters. Temperature measurement and control to ensure product quality, improve production efficiency, energy conservation, production safety, and promote the development of the national economy has played a very important role. In recent years, with the development of automation, pollution-free and energy-saving movement of household appliances and daily-use devices (including automobiles and fireproof devices), especially the application of microcontrollers, the demand for various types of sensors is greatly increased. More than 30 kinds of commonly used physical measurement sensors, the temperature sensor needs accounted for the first place, accounting for about 50%. Temperature sensors are indirectly measured by changing a property of an object as a function of temperature. Temperature sensor varies with temperature