| Summary: | 碩士 === 國立彰化師範大學 === 機電工程學系 === 106 === This thesis proposes a novel dynamic temperature measurement technology and considers the influence of thermal radiation sensors on external radiation.It can improve the phenomenon of inaccurate measurement results of traditional infrared radiation thermometers at different room temperatures for the same target. In the past,it was necessary to wait for the balance between the ambient temperature and the measuring instrument's temperature to compensate at different temperatures via the sensor's built-in thermistor to measure the room
temperature. This kind of processing is called static temperature compensation. However,in practice,measuring instruments often need to move at different ambient temperatures.This long wait for temperature balance has become a known drawback.
In our thermal radiation temperature measurement system, in addition to the thermopile radiation sensor, an external thermistor was added as an ambient temperature detector.We derive two dynamic temperature compensation methods based on Steven Bozeman's law of radiant heat transfer and Newton's cooling law of convection heat transfer. 1.Internal and external thermistor temperature difference "Multiple sensor compensation method" 2.Built-in thermistor difference “Transient compensation method." We use a single-chip microcontroller to read the temperature sensor signal.
After careful calibration and static temperature compensation, the dynamic temperature measurement data
shows good agreement with the expected trend. According to the analysis of experimental results,the novel dynamic temperature measurement technique can achieve rapid temperature compensation. The average error of the target temperature is within 0.2 ℃, which is better than traditional radiation thermometers. This research is very suitable for the application of temperature measurement and temperature compensation occasions.It can effectively improve the measurement efficiency and save equipment expenses.
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