用于声悬浮物体的光纤比色温度计设计

Design of colorimetric fiber-optic pyrometer for temperature measurement of the object levitated by acoustic field

为了在不影响声悬浮场及悬浮物的情况下进行高温超声悬浮物体的温度测量,提出了非接触式光纤比色测温法。这种方法不但克服了其它接触式测温会改变原有物理场和响应速度慢的缺点,而且几乎不受物体光谱发射率的影响。由此原理制成的温度计响应速度为1ms,通过高精度的热电偶标定后在700～1500K的温度范围内精度可达2K。

An untouched fiber-optic colorimetric thermometry is introduced in order to measure temperature of an object levitated by acoustic field when both the object and acoustic field are not affected. Comparing with other touched thermometry the method above does not depend on the emissivity of the object and the default of changing original physics field and responding slowly can be avoided also. From 700K to 1500K a thermometer based on the theory can measure temperature with response speed of 1ms and accuracy of 2K when it is calibrated using high precise thermocouple.