Issue |
E3S Web Conf.
Volume 522, 2024
2023 9th International Symposium on Vehicle Emission Supervision and Environment Protection (VESEP2023)
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Article Number | 01032 | |
Number of page(s) | 13 | |
DOI | https://doi.org/10.1051/e3sconf/202452201032 | |
Published online | 07 May 2024 |
The technological development of infrared sensors in substations and the key determining factors affecting the accuracy of measurement data
1 School of Automation Science and Electrical Engineering, Beihang University, Beijing, China
2 State Grid Xinjiang Electric Power Co., Ltd. Information and Communication Company, Xinjiang, China
3 State Grid Smart Grid Research Institute Co., Ltd, Beijing, China
* Corresponding author: liuyingyi@buaa.edu.cn
An overview of the developmental history, characteristics, and applications of infrared sensors are firstly provided in the paper. Subsequently, it delves into the sensing mechanisms of commonly employed infrared sensors in substations, namely the thermistor sensors, pyroelectric sensors, and photoconductive sensors. Thermistor infrared sensors gauge infrared radiation by tracking changes in material resistance with temperature. Pyroelectric sensors detect thermal changes in objects based on the thermal effects induced by infrared radiation. Photoconductive-type sensors leverage the photoconductive effect of semiconductors to convert optical signals into electrical signals, adapting to various light conditions. In the process of measurements, variables like temperature, distance between the target object and the infrared sensor, and electromagnetic interference impact accuracy. In extreme temperatures, the cooling precision of infrared thermal imaging systems may decline, affecting measurement accuracy. The distance between the target and sensor also influences results due to energy attenuation in the infrared radiation path through the atmosphere. Faraday’s law of electromagnetic induction warns of potential electromagnetic interference signals in substations, causing device breakdowns, output image halo, or increased internal noise. Finally, the paper envisions the future development of infrared sensors.
Key words: Infrared sensors / Thermistor sensors / Pyroelectric sensors / Photoconductive sensors / Determinants of data authenticity
© The Authors, published by EDP Sciences, 2024
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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