温度测量的方法很多,但大体上可以分为两大类。即接触法与非接触法。前者如热电偶、热电阻,由于它们与被测物体接触,所以,精度高、不受辐射率(物体黑度系数)影响,但恶劣气氛(高温、腐蚀),运动物体、微小目标以及热容量小的对象,将由于元件本身的材质或对温度场的破坏,无法正常使用。而非接触测温从可能性来讲,只要热辐射能引起敏感元件任一参数的改变就可达到目的。涡 There are many ways to measure temperature, but in general it can be divided into two broad categories. Contact and non-contact method. The former, such as thermocouple and RTD, have high precision and are not affected by the emissivity (blackness coefficient) due to their contact with the measured object. However, the harsh atmosphere (high temperature, corrosion), moving objects, small targets and small heat capacity Of the object, due to the components of the material itself or the destruction of the temperature field, can not be used normally. Non-contact temperature measurement in terms of the possibility, as long as the thermal radiation can cause any change in the sensor parameters can achieve its purpose. eddy