Device and method for online detection of water content of plant leaves

A technology of plant leaves and detection devices, applied in the direction of material resistance, etc., can solve the problems of long detection time and achieve high accuracy, stable detection results, and good discrimination

Inactive Publication Date: 2013-12-04
ZHEJIANG GONGSHANG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Its disadvantage is that the grain moisture meter uses drying method to detect grain moisture, and the detection time is relatively long

Method used

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  • Device and method for online detection of water content of plant leaves
  • Device and method for online detection of water content of plant leaves
  • Device and method for online detection of water content of plant leaves

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Embodiment

[0040] Embodiment: a kind of plant leaf water content online detection device of the present invention, such as figure 1 , figure 2 As shown, it includes a detection box 1, a first electrode sheet 2, a second electrode sheet 3, a frequency measuring device 4 and a computer 5. The detection box 1 is provided with a SAW resonant detector 6 and a stabilized power supply 7. The top of the detection box 1 A shielding cover 10 is provided, and the shielding cover 10 is detachably connected with the detection box 1. An opening 17 is provided at the bottom middle of the right side wall of the shielding cover 10. The opening 17 of the shielding cover 10 is provided with a baffle plate 18 that can move up and down. The plate 18 is made of metal shielding material, the inner surface of the detection box 1 is provided with a metal conductive layer, the first electrode sheet 2 is fixed in the middle of the top of the detection box 1, the second electrode sheet 3 is located above the detec...

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Abstract

The invention discloses a device and a method for online detection of water content of plant leaves. The device comprises a detection box, a first electrode piece, a second electrode piece, a frequency measuring device and a computer, an SAM resonance detector and a stabilized-voltage power source are arranged in the detection box, the stabilized-voltage power source is electrically connected with a power source end of the SAM resonance detector, two detection ends of the SAM resonance detector are electrically connected with the first electrode piece and the second electrode piece respectively, an output end of the SAM resonance detector is electrically connected with an input end of the frequency measuring device, and an output end of the frequency measuring device is electrically connected with the computer. The method includes detecting a plant leaf to be detected by the SAM resonance detector, subjecting frequency of signals output by the SAM resonance detector to nonlinear random resonance processing to acquire a feature value M, and substituting the feature value into a water content proportion precasting formula to calculate to acquire the water content of the plant leaf. By the device and the method, the water content of the plant leaves can be quickly and accurately detected in an online and lossless manner.

Description

technical field [0001] The invention relates to the technical field of water content detection, in particular to an online detection device and method for water content of plant leaves. Background technique [0002] In the research of greenhouse fruit and vegetable crop cultivation, the water content of plant leaves is an important node of irrigation control. When the water content in the leaves of the plants decreases, if the irrigation cannot be performed in time, the plants will grow slowly due to insufficient water supply, and in severe cases, they will wither, which will greatly affect the yield of the crops. If the water content of the leaves of the plants increases, the irrigation should be suspended to avoid the death of the plants due to excessive water. [0003] The standard method of moisture content measurement is the drying method, but the drying method is a destructive measurement that needs to destroy the sample, and the measurement time is very long and the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/04
Inventor 惠国华周瑶詹玉丽邵拓李晨迪周于人杜桂苏李曼蔡艳芳黄洁王敏敏
Owner ZHEJIANG GONGSHANG UNIVERSITY
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