Plant leaf fixing device for single integrating sphere measurement system

Abstract

The invention discloses a plant leaf fixing device for a single integrating sphere measurement system. The plant leaf fixing device comprises a first clamping piece, a second clamping piece and a clamping piece, the first clamping piece and the second clamping piece match each other and are used for clamping and fixing a plant leaf to be detected; and the clamping piece matches a reflectivity andtransmissivity measuring port of the single integrating sphere and is used for detachably fixing the plant leaf fixing device on the reflectivity and transmissivity measuring port of the single integrating sphere. When the plant leaf fixing device matches a single integrating sphere measuring system to measure the reflectivity and transmissivity of a plant leaf; when the plant leaf is transferredfrom the reflectivity measurement port to the transmittance measurement port, the plant leaf to be detected does not need to be taken down from the fixing device, and the fixing device with the plantleaf to be measured is directly transferred, so that mismatching of measurement points due to human factors is avoided, and the acquisition precision of spectral data of the plant leaf can be improved.

Description

technical field [0001] The invention relates to the technical field of tissue optics, in particular to a plant blade fixing device for a single integrating sphere measurement system. Background technique [0002] With the rapid development of crop optical phenotype analysis technology, the acquisition of plant physiological state information by crop phenotype analysis has always been one of the research hotspots. Equipped with different types of sensors, the plant phenotype monitoring platform can acquire multi-source physiological information data of crops in a short period of time, making it possible to achieve quantitative and precise phenotype measurement. [0003] The spectral detection technology of crops is currently the most important technology for the detection of its physiological state, and the integrating sphere measurement system is an important instrument for realizing accurate optical characteristic measurement. The integrating sphere is a hollow sphere with...

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Problems solved by technology

[0004] However, due to the different content of pigment, nitrogen, water and other substances in plant leaves, different spectral curve characteristics will be displayed in different parts, and the measurement of reflectance and transmittance of single integrating sphere measurement system is not carried out at the same time, but It is carried out at the reflectance measurement port and the transmittance measurement port respectively, and the measurement position of the leaf is not accurately calibrated, which may easily cause the measurement of the reflectance and transmittance to be at different positions, and artificial marking on the surface of the plant leaf will also cause Affects the size of the reflectance and transmittance of the blade, thereby affecting its reflectance and transmittance measurement

Especially when using the mechanism model to invert the content of biochemical components in plant leaves, the reflectance and transmittance of plant leaves will be input into the mechanism model at the same time. The inversion of the points is off track from the very beginning, and the reliability of the inversion results will be greatly reduced, thus affecting the accurate acquisition of plant optical information. Accurate acquisition of plant leaf spectral information is the key to determining the nutritional status of crops, guiding fertilization, etc. important indicators of

However, the current sample fixing method of the single integrating sphere measurement system does not have a special sample positioning device, and the sample to be tested is placed manually, and then the sample to be tested is clamped to the reflectance and transmittance measurement port, resulting in the measurement position It is very random, so that when the sample is transferred from the reflectance measurement port to the transmittance measurement port, the measurement points will not match due to human factors, which will directly affect the measurement accuracy of the reflectance and transmittance of the sample to be tested

Therefore, there is an urgent need for a plant leaf fixing device for a single integrating sphere measurement system to solve the problem that the reflectance and transmittance measurement points of the traditional single integrating sphere measurement system are not uniform

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