Communication and sensing separated radio frequency sensor model construction method and radio frequency sensor

Abstract

The invention discloses a communication and sensing separated radio frequency sensor model construction method and a radio frequency identification sensor. Metamaterial energy absorption characteristics of a bright and dark double-harmonic-oscillator coupling system formed by an open-loop resonator model and a U-shaped symmetrical resonator model are utilized, an electromagnetism-like induced transparency effect is generated. When cracks on a metal floor model surface are detected, two resonant frequencies used for sensing and communication are obtained. Sensing resonant frequency offsets generated by different crack depths are different. Therefore, the communication function and the sensing function can be separated, energy distribution of a sensing function and a communication function is balanced, and the two functions do not interfere each other. The structural size of the radio frequency sensor model is finely adjusted according to the resonant frequency obtained through simulation, so that the radio frequency sensor model achieves impedance matching at the resonant frequency, the radio frequency sensor model after impedance matching is completed is output, and the obtained radio frequency sensor has high communication capability while maintaining high sensing sensitivity.

Description

technical field [0001] The present application relates to the technical field of micro-radio frequency sensors, in particular to a radio frequency sensor model building method and a radio frequency sensor that separates communication and sensing. Background technique [0002] Many infrastructure and complex engineering structures, such as rails, pipelines, aircraft, high-rise buildings, and large-scale water conservancy projects, etc., have been subjected to aging materials, long-term exposure to extreme weather, and frequent stress, resulting in cracks on the surface of the materials, which are potentially harmful and may cause Serious safety accidents and huge economic losses. Therefore, crack detection during the life cycle of infrastructure and complex engineering structures is the key to ensure their safe and reliable operation. [0003] At present, the commonly used crack detection methods include magnetic particle, ultrasonic, infiltration, magnetic flux leakage and ...

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Problems solved by technology

[0005] This application provides a radio frequency sensor model construction method and a radio frequency sensor that separates communication and sensing, which are used to solve the problem that the existin

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