Three-wavelength diffuse reflection optical chlorophyll detection device

A detection device and diffuse reflection technology, which is applied in the direction of measuring device, scattering characteristic measurement, and material analysis through optical means, can solve the problems of low detection accuracy, simple structure of the detection device, and few applications of reflective leaf chlorophyll detection methods. Achieve the effect of eliminating specular reflection and improving light resistance

Inactive Publication Date: 2016-08-17
HENAN AGRICULTURAL UNIVERSITY
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Problems solved by technology

[0002] Chlorophyll content is the most direct, accurate and real-time indicator of plant leaf nutrition. At present, non-destructive testing of chlorophyll mostly uses transmission measurement methods. This method is greatly affected by leaf thickness and light transmission, and there is a large detection error
The reflective leaf chlorophyll detection method is rarely used, and there are problems of simple structure of the detection device and low detection accuracy

Method used

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  • Three-wavelength diffuse reflection optical chlorophyll detection device
  • Three-wavelength diffuse reflection optical chlorophyll detection device
  • Three-wavelength diffuse reflection optical chlorophyll detection device

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Embodiment Construction

[0018] Such as Figure 1-6 As shown, the three-wavelength diffuse reflection optical chlorophyll detection device of the present invention includes a nest 1, a detection unit inserted in the nest 1, and a sealing cover 2 fastened on the top of the detection unit; the nest 1 passes through The hollow connecting rod 3 is connected with the box body 4 for installing the diffuse reflection controller, and the rod cavity of the hollow connecting rod 3 is used for arranging electrical wiring between the diffuse reflection controller and the detection unit. The sealing cover 2 is provided with a cover handle 5 , and the cover handle 5 is hinged to the box body 4 through a pin shaft 6 and a torsion spring 7 . In order to reduce the weight and facilitate labeling, the upper surface of the sealing cover 2 is provided with a cavity 8 with an inverted trapezoidal longitudinal section.

[0019] The detection unit includes a cylinder 9 with three-stage stepped holes from top to bottom, the...

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Abstract

The invention discloses a three-wavelength diffuse reflection optical chlorophyll detection device, which comprises a detection unit inserted in a nest and a sealing cover; the detection unit comprises a cylinder with three-stage stepped holes opened from top to bottom, and the upper end It is a conical frustum structure; on the outer peripheral surface of the cylinder located below the conical frustum, there are six oblique holes inclined upward by 52° symmetrically to the axis of the cylinder, and each oblique hole communicates with the first-order stepped hole; the six oblique holes are opposite to each other. The two slanted holes form a group; one of the slanted holes in each group is provided with a convex lens and an LED light source in sequence from top to bottom, and the other slanted hole is provided with a light-absorbing material; The lens is positioned through the ring sleeve; a light detector is arranged in the third step hole. The invention has the advantage that compared with the existing diffuse reflection detection device, the influence of specular reflection is eliminated from the design of the optical path, and the stability of the light intensity and the overall light protection are greatly improved.

Description

technical field [0001] The invention relates to a plant leaf chlorophyll detection device, in particular to a three-wavelength diffuse reflection optical chlorophyll detection device. Background technique [0002] Chlorophyll content is the most direct, accurate and real-time indicator of plant leaf nutrition. At present, the non-destructive testing of chlorophyll mostly adopts the transmission measurement method. This method is greatly affected by the thickness and light transmission of the leaves. error. The reflective leaf chlorophyll detection method is rarely used, and has the problems of simple structure of the detection device and low detection accuracy. Contents of the invention [0003] The purpose of the present invention is to provide a three-wavelength diffuse reflection optical chlorophyll detection device. [0004] To achieve the above object, the present invention takes the following technical solutions: [0005] The three-wavelength diffuse reflection op...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/01G01N21/47
Inventor 王万章古冬冬王建波陈阳吴建中段铁城王宝山
Owner HENAN AGRICULTURAL UNIVERSITY
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