Design and Research of Leaf Sensing Unit for Smart Agriculture
To address the comprehensive challenges posed by the rapid development of smart agricul-ture to traditional sensing technologies in terms of integration,cost,and performance,and to better monitor leaf temperature,a radio frequency identification system based on backscattering is designed.Through analyzing the physiological mechanism of plant leaf temperature regulation,corresponding temperature sensing units are designed.The structure and working principle of the scattering surface are thoroughly studied,and specific structural design schemes are proposed.The feasibility of the design is verified through simulation analysis,with particular focus on examining the performance characteristics of the scattering surface after adding temperature-sensitive materials.In system testing,the reader antenna design and fabrication were completed,and tests were conducted in both open environments and on actual plant leaf surfaces.Through experiments,the resonance characteristics of the designed scattering surface sensing unit were successfully verified.This research provides a new type of passive sensing solution for monitoring plant physiological status,showing promising application prospects.
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