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Method and device for measuring nitrogen content in plant leaves

A technology for plant leaves and nitrogen content, which is applied in the fields of spectral analysis and artificial intelligence, can solve the problem that the nitrogen content of plant leaves cannot be quickly and automatically obtained, and achieves the effects of low cost, simple device structure and convenient operation.

Active Publication Date: 2021-04-13
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a method for measuring the nitrogen content of plant leaves, which can overcome the problem that the existing plant leaf nitrogen content cannot be obtained quickly and automatically

Method used

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  • Method and device for measuring nitrogen content in plant leaves
  • Method and device for measuring nitrogen content in plant leaves
  • Method and device for measuring nitrogen content in plant leaves

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Experimental program
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Embodiment

[0033] see figure 1 and figure 2 The device for measuring the nitrogen content of plant leaves in this embodiment includes an LED light source 1, a hood housing 2, a dot-matrix spectral image sensor 3, a sample to be tested 4, a light source and a control signal line and a power cord of the dot-matrix spectral image sensor 5. Lead wire 6 of output interface, power supply wire 7, charging interface 8, lithium battery and peripheral circuit 9, start button 10, measurement button 11, button signal wire 12 and AI control chip 13.

[0034] The opening of the light shield housing 2 covers the surface of the sample 4 to be tested, forming an imaging environment free from interference from ambient light. Press the measurement button 11, the AI ​​control chip 13 outputs a driving signal, turns on a group of LED light sources, and reads the digital signal from the dot matrix spectral image sensor 3 after the light source is stable. Turn on the other three groups of light sources acco...

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Abstract

The invention discloses a method and device for measuring the nitrogen content of plant leaves, belonging to the field of spectral analysis and artificial intelligence, comprising the following steps: (1) acquiring a single-band image of a target leaf irradiated by a light source under a single characteristic band; (2) ) Repeat step (1) to collect image information under four characteristic bands; (3) combine the images of the collected four characteristic bands into a four-channel spectral image; (4) use the spectral image and its corresponding The nitrogen content label trains the deep learning model to obtain the nitrogen content prediction model; (5) transplants the trained nitrogen content prediction model to the AI ​​control chip; (6) collects information on the leaf samples to be predicted, and uses The AI ​​sensor equipped with the AI ​​control chip predicts the output nitrogen content; (7) outputs the nitrogen content prediction result through the serial port; (8) displays the distribution map of the nitrogen content of the leaves at different positions in the farmland.

Description

technical field [0001] The invention relates to the field of spectral analysis and artificial intelligence, in particular to a method and device for measuring nitrogen content of plant leaves. Background technique [0002] The nitrogen content of plant leaves is one of the important indicators to reflect the growth state of plants. The detection of nitrogen content in leaves is helpful to judge the nutritional status of plants, and has guiding significance for the decision-making of artificial fertilization. [0003] The traditional detection method of leaf nitrogen content is mainly a destructive chemical detection method, which requires manual operation in a laboratory environment, which is time-consuming and labor-intensive. With the development of spectral analysis technology, it has been widely used in crop information detection. In current research, large-scale spectrometers are often used to measure various physiological indicators of plants, and good results have be...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/25G06N3/04
CPCG01N21/25G06N3/045G01N33/0098G01N21/31G01N2021/3148G06N3/08G06T7/97G01N21/17G01N2021/1765G06T7/0014G06T2207/20081G06T2207/20084G06T2207/30188H04N5/30
Inventor 裘正军周磊赵楠何勇
Owner ZHEJIANG UNIV