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Soil moisture detection method and application thereof

A detection method and soil moisture technology, applied in special data processing applications, image data processing, instruments, etc., can solve the problems of heavy measurement workload, decreased measurement accuracy, and immaturity, and achieve accurate calculation values ​​and improved analysis speed. , the effect of improving accuracy

Inactive Publication Date: 2018-09-14
HUNAN AGRICULTURAL UNIV
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AI Technical Summary

Problems solved by technology

The drying method measures soil moisture with high accuracy and small error, but the measurement workload is heavy, and the data results cannot be obtained in time
The resistance sensor is easy to measure and can obtain soil moisture data in time, but the measurement results are easily affected by soil dissolved salt and temperature, and the measurement accuracy decreases when the soil moisture content is low
[0004] In addition, the methods of measuring soil moisture include neutron method, ground penetrating radar method (GPR), frequency domain reflectometer method (TDR), and time domain reflectometer method (FDR). These technologies have high detection efficiency and strong anti-interference factors. and other advantages, but these measurement techniques are not yet mature in soil moisture measurement, and the equipment is expensive, so they are rarely used in practical applications.
[0005] Most of the soil moisture measurement methods are to measure the moisture medium in the soil to reflect the moisture content value, and there are few research reports on judging soil moisture based on soil color

Method used

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  • Soil moisture detection method and application thereof
  • Soil moisture detection method and application thereof
  • Soil moisture detection method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0046] Experimental study on soil moisture image recognition and conduction.

[0047] 1. Image Acquisition Test

[0048] The test soil is taken from the silty clay of the Yunyuan Experimental Base of Hunan Agricultural University. Select 1.5kg of soil and place it in a blast oven to dry at 105°C. The saturated moisture content of the silty clay is 54%. Set the soil moisture content to 0%, 10%, 20%, 30%, 40%, 50%, and 60%. The setting method is to select 100g of dry soil and add 60g of water to stir evenly, dry gradually, and weigh every 10 minutes. Its mass changes and an image is acquired when the set moisture content is reached. The images were collected under the same light conditions and at a fixed location, and the colors of soils with different moisture contents were as follows: figure 2 shown.

[0049] 2. Image Analysis Test

[0050] Analyze the color stable part in the middle of the collected image intercepted test soil, the intercepted image size is 241mm×241mm, ...

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Abstract

The invention discloses a soil moisture detection method and an application thereof, proposes a new idea for measuring the soil moisture according to the soil color, and combines with the image recognition and data transmission functions of a computer for experimental investigation. Through the pixel gray scale analysis of images with different soil moisture contents, a corresponding relational expression of the soil moisture and the gray scale is built, and the moisture values of the same soil are obtained through comparison. The precision of a soil moisture value obtained through an image recognition program will be remarkably improved, and the analysis speed is remarkably improved. The computer image recognition program is used for obtaining the soil moisture value for agricultural production, thereby achieving the automatic control of the irrigation of crops. In the early warning of the geological disasters, the method can be used for forecasting of potential landslide soil or excessive soil moisture, and achieves the advanced preparation and processing.

Description

technical field [0001] The invention belongs to the field of soil moisture measurement, in particular to a method for detecting soil moisture and its application. Background technique [0002] The composition of soil is relatively complex. According to the material composition, soil is composed of solid phase, liquid phase and gas phase. Soil moisture belongs to the liquid phase substance in soil, which has certain influence on soil gas content, solid structure and physical properties of soil. In agricultural production, soil moisture is crucial to crop growth and affects the absorption of water and nutrients by crops. Different crops have different requirements for soil moisture during the growth process, and crops grow better under suitable soil moisture conditions. Measuring soil moisture and studying the growth law of crops under different soil moisture is an important measure for the development of agricultural precision irrigation and efficient use of water. In the ...

Claims

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Application Information

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IPC IPC(8): G06T7/90G06T7/00G06F17/50
CPCG06F30/20G06T7/0002G06T7/90G06T2207/30184G06T2207/30188
Inventor 姚帮松张立成王璟杨敬林
Owner HUNAN AGRICULTURAL UNIV
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