Device and method for detecting plant lamina three-dimensional light distribution

A plant leaf and detection device technology, applied in the field of plant leaf spectral detection, can solve the problems of single equipment band, inability to realize, long measurement time, etc., and achieve the effects of high detection accuracy, strong adaptability and high precision

Active Publication Date: 2015-01-21
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Although the device is exquisitely designed, it cannot realize the movement of the light source spot on the blade without moving the sample (the position of the sample measurement process does not change), and measure the distribution of the reflected light and transmitted light of the sample at different positions.
The size of the incident light spot cannot be changed according to the size of the blade. At the same time, the biggest disadvantage of this device is that it cannot measure the reflected light and transmitted light of the same blade at the same time.
[0008] Other equipment also has problems such as single band and long measurement time
Therefore, the traditional plant leaf diffuse reflection distribution device cannot accurately and completely obtain the two-way reflection data of the leaves.

Method used

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  • Device and method for detecting plant lamina three-dimensional light distribution
  • Device and method for detecting plant lamina three-dimensional light distribution
  • Device and method for detecting plant lamina three-dimensional light distribution

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0064] Detection steps for detecting three-dimensional light distribution at multiple points on plant leaves:

[0065] 1. Turn on the power of the halogen light source 20, place the blade fixed value on the experimental platform 7, and move the light source rocker 16 to measure the zenith angle φ i=0° value, and use the wing nut to fix its position, adjust the second lens group to the position of the experimental platform 7, adjust the aperture 1906 and then adjust the uniformity of the intensity of the light source spot 24. Remove the leaves from the experimental platform 7 and store the leaves at low temperature. Connect the QE65000 spectrometer 10-1 and QE65000 spectrometer 10-2 with the QE65000 data cable to the computer to make it in working condition. It takes 30 minutes to make the light source system and the spectrometer system work stably. state.

[0066] 2. Set the incident angle of the light source on the computer software to be (φ i = 0°, Ψ i =0°), set the detec...

Embodiment 2

[0078] Detection steps for detecting the three-dimensional light distribution of plant leaves:

[0079] 1. Repeat Step 1, Step 2, Step 3, Step 4, Step 5, Step 6, and Step 7 in Example 1.

[0080] 2. Repeat step 4, step 5, and step 6 in Example 1, and the collected light is collected by QE65000 spectrometer 10-1 and recorded in the computer.

Embodiment 3

[0082] Detection steps for detecting the three-dimensional transmitted light distribution of plant leaves:

[0083] 1, repeat step 1, step 2 in embodiment 1,

[0084] 2. Set the incident angle of the light source in the computer software to be (φ i , Ψ i =0), at the same time, set the initial position of the detection direction of the receiving probe on the transmission receiving arc of the detection system (φ 2s始 , Ψ 2s始 )

[0085] 3. Adjust the Z-axis simple sliding table 24 so that the experimental platform 7 is at the lowest point in height, place the quartz vessel with a transmittance of 60% on the experimental platform 7 in step 1, and set and record the transmittance of 60%. The height H of the upper surface of the quartz vessel.

[0086] 4. Repeat steps 4, 5 and 6 in Example 1.

[0087] Remove the quartz vessel with a transmittance of 60%, fix the blade at the fixed position of the blade in step 1, and adjust the Z-axis simple sliding table 24 so that the height ...

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Abstract

The invention discloses a device and a method for detecting plant lamina three-dimensional light distribution. The device comprises a sample table for bearing to-be-tested samples, a light source system for transmitting detection light to the to-be-tested samples and a detecting system for receiving and processing reflected light and / or transmission light from the to-be-tested samples. The sample table comprises a table frame and a testing platform arranged on the table frame and used for bearing the to-be-tested samples, and a light transmitting area is arranged in the middle of the testing platform. The detesting system at least comprises a reflective receiving probe arranged above the testing platform and used for detecting the reflective light of the to-be-tested samples and a transmission receiving probe arranged below the light transmitting area and used for detecting the transmission light of the to-be-tested samples. The device and the method for detecting plant lamina three-dimensional light distribution can perform a three-dimensional distributed diffuse refection test for the samples, perform a three-dimensional distributed transmission test for the samples and perform the three-dimensional distributed diffuse refection and transmission tests at the same time for the samples and solves the problem that an existing instrument can not perform reflection and transmission at the same time.

Description

technical field [0001] The invention relates to the technical field of plant leaf spectrum detection, in particular to a detection device and method for three-dimensional light distribution of plant leaves. Background technique [0002] Under the irradiation of light, the plant leaves will produce reflected light on the upper surface of the leaves and transmit light on the lower surface of the leaves through the upper epidermis, mesophyll tissue, and lower epidermis of the leaves (such as figure 1 shown). The distribution of reflected light on the upper surface of the blade is not evenly distributed in the upper part of the blade, and the transmission is not evenly distributed. [0003] The spectral range from 400nm to 2500nm can be divided into three parts: the visible light at 400-800nm ​​is characterized by the strong ability of photosynthetic pigments to absorb light, and the absorption in the near-infrared region (800-1100nm) is limited by dry matter, however It is th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01J3/28G01J3/42
Inventor 方慧杜朋朋胡令潮何勇张畅
Owner ZHEJIANG UNIV
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