A soil moisture automatic monitoring system and method based on drying method

Abstract

The invention belongs to the technical field of farmland water conservancy, and in particular relates to a system and a method for automatically monitoring soil moisture based on a drying method. The system comprises a bracket, a signal transmitter, a soil spade, a power device, an electric heating plate, a balance, a solar cell panel, a data acquisition unit, and a data memory card, wherein the signal transmitter transmits a soil spading start signal; the power device controls the soil spade to spade a soil sample; the soil spade is closed after taking the soil sample and then is lifted upwards; the balance is used for weighing the initial mass of the soil sample and records data in the memory card; the electric heating plate heats and dries the soil sample; and after the soil sample is cooled, the mass G2 of dried soil is weighed and recorded in the memory card, and then the soil spade is opened to put the soil sample back to an original place. The system and the method for automatically monitoring the soil moisture based on the drying method, provided by the invention, are relatively cheap, are simple and easy to operate, do not pollute the balance, can avoid soil and water loss during detection, and are higher in precision.

Description

technical field [0001] The invention belongs to the technical field of farmland water conservancy, and in particular relates to a soil moisture automatic monitoring system and method based on a drying method. Background technique [0002] In agricultural production, soil moisture is one of the necessary elements for crop production. People often use rainfall or irrigation to meet the crop's demand for soil moisture. In order to use soil moisture more scientifically, it is necessary to monitor changes in soil moisture. Currently used soil moisture content measurement methods mainly include drying method, time domain reflectometer, soil negative pressure meter and other methods, but the above methods have their own advantages and disadvantages. The measurement operation is difficult, and other instruments and equipment also have shortcomings such as limited measurement accuracy or high cost. Therefore, it is necessary to invent a simple, accurate and cheap automatic soil moist...

AI Technical Summary

Problems solved by technology

[0002] In agricultural production, soil moisture is one of the necessary elements for crop production. People often use rainfall or irrigation to meet the crop's demand for soil moisture. In order to use soil moisture more scientifically, it is necessary to monitor changes in soil moisture. The currently used soil moisture content measurement methods mainly include drying method, time domain reflectometer, soil negative pressure meter and other methods, but the above methods have their own advantages and disadvantages. The measurement operation is difficult, and other instruments and equipment also have shortcomings such as limited measurement accuracy or high cost. Therefore, the invention of a simple, accurate and cheap soil moisture automatic monitor is necessary

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