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

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 ...

AI Technical Summary

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

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