Radiation Temperature Measurement Technology Based on the Basis of Spectral Emissivity Function

Area of Science:

• Physics
• Engineering
• Materials Science

Background:

• Accurate temperature measurement is crucial for national defense, industry, and technology.
• Multi-spectral radiation thermometry is vital for high-temperature and transient measurements.
• Current methods struggle with fixed spectral emissivity models that don't adapt to varying temperatures.

Purpose of the Study:

• To develop a novel multi-spectral thermometry method.
• To address the limitations of fixed spectral emissivity models in radiation temperature measurement.
• To propose a universal method for calculating emissivity and radiation temperature.

Main Methods:

• Utilizing Planck's law of black body radiation.
• Introducing the concept of form invariance for spectral emissivity functions across temperatures.
• Developing a dynamic emissivity model adaptable to changing object temperatures.

Main Results:

• The proposed method allows emissivity models to adapt dynamically to object temperature changes.
• A general method for calculating final emissivity and radiation temperature is presented.
• Simulations and experiments validate the method's simplicity, practicality, and improved accuracy.

Conclusions:

• The new method enhances spectral emissivity calculation accuracy, leading to better radiation temperature measurements.
• The approach offers improved practicality and broad applicability compared to existing solutions.
• This technique is suitable for high-temperature, transient measurements in demanding industrial settings.