Railways Temperature Sensing and Monitoring Based on Passive Harmonic RFID Systems

IF 4.1 1区工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Transactions on Microwave Theory and Techniques Pub Date : 2024-10-04 DOI:10.1109/TMTT.2024.3464450

Vinicius Uchoa Oliveira;Paulo Capitão;Nuno Borges Carvalho

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引用次数: 0

Abstract

Rail temperature monitoring enhances safety and efficiency, but traditional approaches can be expensive, restrictive, or power-intensive. In this article, an alternative solution is proposed, leveraging harmonic tags—passive sensors that can be wirelessly powered and interrogated by a reader device. Operating at frequencies of 2.45 and 4.9 GHz, these harmonic tags modulate the backscattered signal at a higher harmonic frequency using a Schottky diode as a frequency doubler, with the modulation varying according to the temperature measured by a negative temperature coefficient (NTC) sensor. The proposed tag undergoes performance testing, evaluating conversion loss (CL), communication range, and temperature sensitivity across a range of

$0~^{\circ }$

C–

$100~^{\circ }$

C. Readings were successfully captured at distances up to 2 m. Validation of the solution occurs in an authentic railway environment, demonstrating its feasibility and effectiveness.

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来源期刊

IEEE Transactions on Microwave Theory and Techniques 工程技术-工程：电子与电气

CiteScore

8.60

自引率

18.60%

发文量

486

审稿时长

6 months

期刊介绍： The IEEE Transactions on Microwave Theory and Techniques focuses on that part of engineering and theory associated with microwave/millimeter-wave components, devices, circuits, and systems involving the generation, modulation, demodulation, control, transmission, and detection of microwave signals. This includes scientific, technical, and industrial, activities. Microwave theory and techniques relates to electromagnetic waves usually in the frequency region between a few MHz and a THz; other spectral regions and wave types are included within the scope of the Society whenever basic microwave theory and techniques can yield useful results. Generally, this occurs in the theory of wave propagation in structures with dimensions comparable to a wavelength, and in the related techniques for analysis and design.