在遇到测量运动物体等情况时,不能将温度检测端与其接触得到热平衡,要采用非接触法测量。这类非接触法常见的实际应用情况可归纳出下面几种:1)由于被测物体微小,如将温度检测端与其接触,就要有热量的吸收,被测物体的温度发生变化;2)在高温条件下,热电偶的恶化显著,难以保持测量精度; In the event of measurement of moving objects, etc., the temperature can not be detected with its end to get thermal equilibrium, to be used non-contact measurement. Common practice of such non-contact method can be summarized in the following categories: 1) As the measured object is tiny, such as the temperature detection end contact with it, there must be heat absorption, the measured object temperature changes; 2) In high temperature conditions, the deterioration of thermocouples significantly, it is difficult to maintain the measurement accuracy;