Theoretical and Simulation Analysis of a Thin Film Temperature Sensor Error Model for In Situ Detection in Near Space

Author:

Wang Guoyan123,Hu Chun234ORCID,Zheng Dezhi234

Affiliation:

1. School of Mechatronical Engineering, Beijing Institute of Technology, Beijing 100081, China

2. MIIT Key Laboratory of Complex-Field Intelligent Exploration, Beijing Institute of Technology, Beijing 100081, China

3. Yangtze Delta Region Academy of Beijing Institute of Technology, Jiaxing 314000, China

4. Advanced Research Institute of Multidisciplinary Science, Beijing Institute of Technology, Beijing 100081, China

Abstract

Near space environment is the airspace at 20–100 km, where complex conditions such as low temperature, low pressure, high wind speed, and solar radiation exist. Temperature, as one of the most important meteorological parameters, is crucial for space activities. However, the accuracy of traditional temperature sensors is low, and the influence of complex environments makes the error of conventional temperature measurement methods more extensive. Therefore, we designed a new microbridge temperature sensor to reduce solar radiation and achieve a fast response. Additionally, through simulation analysis, we investigated the three factors influencing the temperature errors of Joule heat, solar radiation heat, and aerodynamic heat. Additionally, the influence of temperature error is reduced by optimizing the installation position of the sensor. The error value in the actual measurement value is removed through the temperature error model to realize the high-accuracy detection of the near space temperature.

Funder

National Natural Science Foundation of China

National Key R&D Program of China

Publisher

MDPI AG

Subject

Fluid Flow and Transfer Processes,Computer Science Applications,Process Chemistry and Technology,General Engineering,Instrumentation,General Materials Science

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