Design of fiber-optic high-temperature sensor based on colorimetry

Traditional radiation thermometer is not suitable for such adverse environment like strong electromagnetic interference, strong corrosion, and confined space, etc. To overcome the defect of traditional radiation thermometer, a new colorimetric fiber-optic temperature measurement system has been proposed in the present research, and the system meets the requirements for transient-temperature measurement. On the basis of describing the working principle of colorimetric temperature measurement, a colorimetric fiber-optic high-temperature sensor has been designed, and the feasibility of the design has been proved through experiments. The design is characterized by low cost and high accuracy, and has a sound prospect with certain application value.