A Wireless Earth Pressure Sensor Based on Air Pressure Monitoring Method

Abstract

The invention provides a wireless soil pressure sensor based on an air pressure monitoring method, and belongs to the technical field of sensing and measurement. The sensor comprises a deformable elastic shell, an integrated module which is composed of a single-chip microcomputer, a wireless transmit-receive unit, an air pressure and temperature sensing unit, a battery and a wireless charging unit, and elastic connecting ropes. When the deformable elastic shell is enabled to deform by soil pressure, the air pressure and temperature sensing unit monitors change of air pressure and temperature in the elastic shell, and the data are transmitted to an external device of the shell by the wireless transmit-receive unit after acquisition of the single-chip microcomputer, temperature compensation and calibration function transformation processing. The internal part of the shell adopts the battery for power supply, and noncontact charging of the battery is performed by utilizing the wireless charging unit without damaging the deformable elastic shell. The wireless soil pressure sensor is widely suitable for soil stress comprehensive monitoring, and the wireless soil pressure sensor is simple in structure, low in cost, convenient to use, high in adaptability, wireless in transmission and wireless in charging and can perform long-term monitoring after one time of embedding so that the problem of soil pressure distribution monitoring can be solved.

Description

technical field [0001] The invention relates to a wireless earth pressure sensor based on an air pressure monitoring method for measuring soil earth pressure, belonging to the technical field of sensing and measurement. Background technique [0002] The mechanical compaction of soil is a problem that has attracted more and more attention in agricultural production. Compaction has a negative impact on the physical and chemical state of the soil, thus creating a harsh growth environment for crops and resulting in reduced yields. Therefore, the monitoring of soil compaction and the control of compaction state are the basic work to solve the problem of soil compaction. At present, the evaluation of soil compaction in China is mainly based on physical indicators such as soil compactness, bulk density and porosity, and at the same time it is evaluated in conjunction with indicators such as crop growth and yield; while foreign countries use the above indicators to evaluate and moni...

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Problems solved by technology

[0002] The mechanical compaction of soil is a problem of increasing concern in agricultural production. Compaction has a negative impact on the physical and chemical state of the soil, thus creating a harsh growth environment for crops and resulting in reduced yields.

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