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Electromagnetic wave resonance cavity method for accurate diagnosis of plant moisture

An electromagnetic wave and resonant cavity technology is applied in the direction of using microwaves to test moisture content, analyze materials, and use wave/particle radiation for material analysis. It can solve the problems that it is not suitable for diagnosing active plant moisture and the method is complicated, and achieve a wide range of measurements. The effect of high measurement accuracy

Inactive Publication Date: 2007-07-04
YUNNAN UNIV
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Problems solved by technology

However, this method is complicated and needs to heat up the tested sample, so it is not suitable for diagnosing the moisture content of active plants.

Method used

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  • Electromagnetic wave resonance cavity method for accurate diagnosis of plant moisture
  • Electromagnetic wave resonance cavity method for accurate diagnosis of plant moisture
  • Electromagnetic wave resonance cavity method for accurate diagnosis of plant moisture

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0050] Embodiment: see Fig. 10 and Fig. 11.

[0051] The computer 6 controls the launch system through the interface 5. The launch system 1 outputs frequency-sweeping electromagnetic waves. The frequency-sweeping electromagnetic waves enter the metal resonance cavity 7 through the coupling device 2. There is a through hole 3 in the cavity of the resonance area. The through hole provides a connection between the resonance cavity and the plant stem. In the strong interaction area, the electromagnetic wave after the action is output through the coupling device 2, the electromagnetic wave output by the coupling device enters the receiving system 4, and the signal processed by the receiving system enters the computer 6 through the interface 5. The computer processes the received information to invert the water scarcity of the plants.

[0052] In this embodiment, the cylindrical metal resonant cavity is composed of two equal-volume semi-cylinders, with a hole in the middle. The heig...

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Abstract

The invention relates to a lossless detection method for the water of activity plant using the electromagnetic wave technique. It includes following steps: 1, the strong interaction region of the electromagnetic wave and the object to be measured is provided; 2, the computer reads the output voltage in the resonance region without the resonance frequency and the electromagnetic wave signal of the object to be measured, calculate the resonance frequency and Q value, list and store in the computer, and finish the preparation course of test; 3, the computer reads the output voltage in the resonance region with the resonance frequency and the electromagnetic wave signal of the object to be measured, calculate the resonance frequency and Q value, list and store in the computer, and finish the preparation course of test; 4, the change of water content can be inversed according to the output voltage of the resonance frequency and the electromagnetic wave signal in step 3 and step 4. The invention could detect the change of water content of the root, caudex and leaf to monitor the change of water content, and it has high measurement accuracy, wide measured range and not effect by the measuring force.

Description

technical field [0001] The invention relates to a method for non-destructive detection of active plant water by electromagnetic wave technology. Background technique [0002] The shortage of water resources is the main factor restricting the world's economic development and ecological reconstruction. The development of water resources and water conservation have become the focus of people's research, especially the potential for water conservation is huge. For example, the utilization rate of agricultural irrigation water in developed countries can reach more than 80%, while it is only 30% to 40% in my country. Therefore, water-saving irrigation is the only way to solve the problem of water shortage in our country. The research on plant water monitoring and diagnosis technology can be divided into the following three stages. [0003] In the first stage, it is judged whether the plants are short of water according to the soil moisture. Traditional soil moisture measurement...

Claims

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Application Information

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IPC IPC(8): G01N22/04G01N23/00
Inventor 黄铭赵东风宗容杨明华蔡光卉施继红杨晶晶
Owner YUNNAN UNIV
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