DEVELOPMENT AND CALIBRATION OF AN ELECTRONIC CIRCUIT FOR MEASURING THE TEMPERATURE OF ELEMENTS OF ROCKET AND SPACE TECHNOLOGY BASED ON THE PT100 THERMISTOR
DOI:
https://doi.org/10.26577/JPEOS202527347Keywords:
Temperature measurement, PT100 thermistor, electronic circuits, electronics design, space industryAbstract
Monitoring the condition of spacecraft components is a crucial aspect of the space industry. By monitoring key parameters such as temperature, it is possible to ensure the safety and reliability of critical rocket systems. This is particularly important for thermally sensitive electronics and rocket parts that are subjected to significant thermal stress.
The aim of this research was to develop a compact and efficient solution for simultaneously measuring temperature at three points on a rocket or spacecraft, as well as create an optimal calibration algorithm for a PT100 temperature sensor used in the system. This would allow for considering individual sensor characteristics for more accurate measurements.
The novelty of this work lies in the new design of a temperature measurement system, which has been developed with the aim of being compact and suitable for use in rocket and space technologies. The significance of this work is demonstrated by its practical implementation in national projects.
To achieve these goals, a methodology was followed that included the development of electronic circuits, rendering in the EasyEDA PCB editor, circuit connection, and calibration using C++ programming and the STM32CubeIDE software environment. Key electronic components, such as the PT100 temperature sensor, the LM224 operational amplifier, and the STM32 microcontroller, were used in this project. The result is a custom-designed solution for measuring the temperature of rocket and spacecraft parts. The value of this solution lies in its potential application in real-world projects, as well as its adaptability for similar projects due to its simplicity, compactness, and high degree of technical flexibility. This solution has been proposed for the first time and represents a step towards greater independence for the national space industry, free from the often-unattainable technologies of world leaders in the field. Nevertheless, this solution draws upon international experience by applying and adapting classical formulas and designs.
