System and method for static and dynamic calibration of thin film thermocouple

Abstract

The invention discloses a system and a method for static and dynamic calibration of a thin film thermocouple, and relates to the technical field of temperature sensor parameter calibration, the system comprises a temperature regulation box module, a thermocouple module, a pulse laser source module, a photoelectric detector and a zero thermostat; the temperature adjusting box module comprises a closed box body with a light-transmitting window and a temperature control unit, and the temperature control unit is used for controlling the temperature in the closed box body; the thermocouple module comprises a to-be-calibrated film thermocouple and a standard film thermocouple which are located in the closed box body, a first cold end and a first output end which are connected with the to-be-calibrated film thermocouple and extend to the outside of the closed box body, and a second cold end and a second output end which are connected with the standard film thermocouple and extend to the outside of the closed box body; the first cold end and the second cold end are placed in a zero-degree thermostat; and the pulse laser source module is used for generating pulse laser and enabling the pulse laser to irradiate the photoelectric detector while irradiating the film thermocouple to be calibrated through the light-transmitting window.

Description

technical field [0001] The invention relates to the technical field of temperature sensor parameter calibration, in particular to a system and method for static and dynamic calibration of thin-film thermocouples. Background technique [0002] As the core part of the aviation field, aero-engines are very important to ensure stable performance during their working process, and temperature detection is an important means to ensure stable performance during the working process of the engine; when the aircraft flies in the atmosphere, the temperature of the material on the outer surface of the casing will rise rapidly. High, accurate detection of the temperature of the outer surface of the casing is of great significance to whether the design of the aircraft's heat protection system is reasonable; the instantaneous detection of the temperature of the barrel when the rocket is launched, and the detection of the temperature of the inner wall of the internal combustion engine barrel,...

AI Technical Summary

Problems solved by technology

[0005] The existing static calibration and dynamic calibration need to build calibration platforms separately, and the thin film thermocouple to be calibrated needs to be transferred on the two platforms, which is easy to damage the thin film thermocouple to be calibrated, and the calibration structure is complex, inconvenient to operate, and easy to introduce errors

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