[Radiation thermometry based on calibration of spectral responsivity]

Area of Science:

• Physics
• Thermodynamics
• Optical Engineering

Context:

• Accurate surface temperature measurement is crucial in various industrial and scientific applications.
• Traditional radiation thermometry often requires precise calibration of the spatial relationship between the target and the sensor.
• Simultaneous measurement of emissivity and temperature presents challenges due to interdependent parameters.

Purpose:

• To develop a radiation thermometry method that obviates the need for space position calibration.
• To integrate the non-spectral parameter, dependent on target-lens position, into emissivity modeling.
• To enable accurate true surface temperature determination without data normalization.

Summary:

• A new approach models the non-spectral parameter within the emissivity function using finite series, bypassing the need for spatial calibration.
• This method allows for the determination of true surface temperature and the trend of spectral emissivity, rather than its exact value.
• Multi-wavelength thermometry equations yield unique solutions when channel wavelengths differ, unlike multi-band approaches with variable solution numbers.

Impact:

• Simplifies the process of radiation thermometry, making it more accessible and cost-effective.
• Enhances the accuracy and reliability of temperature measurements in environments where spatial calibration is difficult.
• Provides a robust method for characterizing emissivity trends, aiding in material analysis and process control.