A soil temperature and humidity three-dimensional map detection system and detection method based on UAV and surface acoustic wave sensor nodes

Abstract

The invention discloses a soil temperature and humidity three-dimensional map detection system and detection method based on UAV and surface acoustic wave sensor nodes. On the UAV, several surface acoustic wave sensor nodes are distributed in the field soil to be detected according to certain topological rules, and the UAV can obtain the three-dimensional map of the temperature and humidity of the mesoscale soil and its change over time, providing a theory for precision irrigation Basis and practice decision-making. The surface acoustic wave sensor node of the present invention is formed by parallel connection of multiple single-ended delay line type surface acoustic wave devices, each device includes four reflection grids, and its structure can not only complete the parallel sensing function of soil temperature and humidity, but also It can also realize simultaneous detection of soil temperature and humidity values ​​at different depth levels at the same surface position.

Description

Technical field: [0001] The invention relates to a soil temperature and humidity three-dimensional map detection system and detection method based on unmanned aerial vehicles and surface acoustic wave sensor nodes, belonging to the fields of soil detection and wireless sensing. Background technique: [0002] In modern agricultural operations, in order to achieve precise irrigation, it is necessary to monitor soil moisture (water content) and temperature through sensors, and use the actually obtained soil temperature and humidity information as the basis for decision-making to implement targeted irrigation. Due to the combined effects of topography, microclimate, vegetation type, soil physical and chemical properties, and human activities, even in the same area, soil temperature and humidity show a high degree of heterogeneity in time and three-dimensional space (including the direction of soil depth). sex. Therefore, it is necessary to study the spatiotemporal distribution ...

AI Technical Summary

Problems solved by technology

[0006] The present invention aims at the actual situation that it is difficult to obtain mesoscale field soil temperature and humidity measurement data based on aerial photography plots and the problems existing in the existing soil temperature and humidity detection methods, and proposes a soil based on UAV and surface acoustic wave sensor nodes. The temperature and humidity three-dimensional map detection system and detection method, the purpose of which is to obtain the three-dimensional temperature and humidity map of mesoscale soil and its change over time by unmanned aerial vehicles, and provide theoretical basis and practical decision-making for precision irrigation

Images