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Outdoor measurement auxiliary device for crop leaf reflection spectrum

A reflection spectrum and auxiliary device technology, which is applied in the direction of measuring device, color/spectral characteristic measurement, and material analysis through optical means, can solve the problem of maintaining the distance between the leaves of the spectrometer observation angle, increasing the error of the experimental result, and poor consistency of the experimental environment and other problems, to achieve the effect of convenient adjustment of observation inclination, convenient clamping and simple operation

Pending Publication Date: 2022-06-28
FARMLAND IRRIGATION RES INST CHINESE ACAD OF AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Traditional outdoor crop spectrum acquisition requires a person to hold a spectrometer and use the spectrometer to directly measure the crop leaves or canopy (multiple leaves). It is difficult to keep the observation angle of the spectrometer and the distance from the leaves tending to be the same when measuring multiple leaves. , resulting in poor consistency of the experimental environment, leading to an increase in the error of the experimental results, and causing difficulties in later data processing and model construction.

Method used

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  • Outdoor measurement auxiliary device for crop leaf reflection spectrum
  • Outdoor measurement auxiliary device for crop leaf reflection spectrum
  • Outdoor measurement auxiliary device for crop leaf reflection spectrum

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] like Figure 1-6 As shown in the figure, the auxiliary device for measuring the reflectance spectrum of crop leaves includes an observation carrying panel 1. The upper end surface of the observation carrying panel 1 is provided with an observation area 2 and an incident angle measurement area 3, and the left and right sides of the observation area 2 are respectively provided with There are a first base 4 and a second base 5;

[0051] a clamp assembly, the clamp assembly is located on the second base 5 for clamping the blade;

[0052] A spectrometer fixing bracket, the two ends of the spectrometer fixing bracket are respectively connected with the first base 4 and the second base 5, for holding the optical fiber head 12 of the spectrometer, and the observation inclination angle is adjustable;

[0053] Incident angle measurement component, the incident angle measurement component is located in the incident angle measurement area 3, and is used to measure the height angle...

Embodiment 2

[0061] like Figure 1-7 As shown, on the basis of Embodiment 1, the clamp assembly includes a placement slot 61 , a control rod 62 , a Z-shaped connecting shaft 63 , and a connecting plate 64 , and the placement slot 61 is located along the upper end face of the second base 5 . Its length direction is arranged forward and backward, the control rod 62 is located in the placement groove 61, and has a certain elasticity, the Z-shaped connecting shaft is located on the left side of the second base, and has a certain elasticity, the Z The right end of the Z-shaped connecting shaft penetrates the left side wall of the placement slot 61, and the Z-shaped connecting shaft is movably connected to the left side wall of the placement slot 61. There are three Z-shaped connecting shafts evenly arranged, and the three Z-shaped connecting shafts are connected The left end of the shaft is movably connected with a connecting plate 64, the right end of the Z-shaped connecting shaft located in t...

Embodiment 3

[0070] On the basis of Embodiment 1, the present invention also discloses a method for using an auxiliary device for measuring the reflectance spectrum of crop leaves outdoors. The specific steps include:

[0071] S1: Fix the crop leaves on the observation bearing panel through the clamp assembly;

[0072] S2: Fix the spectrometer on the bracket, and clamp the optical fiber head of the spectrometer on the fixing plate through the clamping component;

[0073] S3: Measure the height angle and azimuth angle of the incident sun through the incident angle measurement component, and adjust the incident height angle and azimuth angle through the incident angle adjustment component according to the experimental needs;

[0074] S4: Adjust the observation inclination of the spectrometer fixing bracket, and fix it through the limit component;

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Abstract

The invention relates to a crop leaf reflection spectrum outdoor measurement auxiliary device which comprises an observation bearing panel, an observation area and an incident angle measurement area are arranged on the upper end face of the observation bearing panel, and a first base and a second base are arranged on the left side and the right side of the observation area respectively; the clamp assembly is located on the second base and used for clamping the blade; the two ends of the spectrograph fixing support are connected with the first base and the second base respectively, the spectrograph fixing support is used for clamping an optical fiber head of a spectrograph, and the observation inclination angle is adjustable; and the incident angle measurement assembly is located in the incident angle measurement area and is used for measuring the height angle and the azimuth angle of solar incidence. The device is composed of the observation bearing panel provided with the leaf clamp, the spectrograph fixing support with the adjustable observation inclination angle, the incident angle measuring assembly and the support, the incident angle and the observation angle which are measured multiple times can be kept the same, and a higher-consistency experiment environment is provided for crop remote sensing spectrum observation.

Description

technical field [0001] The invention relates to the technical field of auxiliary equipment for measuring the reflection spectrum of leaves, in particular to an auxiliary device for measuring the reflection spectrum of crop leaves outdoors. Background technique [0002] Crop spectroscopy has the advantages of simplicity, rapidity, high precision and non-destructive measurement, and has become one of the important means to monitor crop growth and nutritional information. The measurement of crop reflectance spectrum plays an important role in the construction of spectral transmission model and remote sensing inversion model. [0003] Traditional outdoor crop spectrum acquisition requires a person to hold a spectrometer and use the spectrometer to directly measure crop leaves or canopy (multiple leaves). When measuring multiple leaves, it is difficult to keep the observation angle of the spectrometer and the distance from the leaves tend to be the same , resulting in poor consi...

Claims

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Application Information

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IPC IPC(8): G01N21/25G01N21/01
CPCG01N21/25G01N21/01
Inventor 贾艳辉李金山冯亚阳李鹏
Owner FARMLAND IRRIGATION RES INST CHINESE ACAD OF AGRI SCI