Infrared spectrum continuous detection device based on dynamic track scanning

Abstract

The invention discloses an infrared spectrum continuous detection device based on dynamic track scanning, and the device comprises a vibration feeding module which is used for realizing single-grain falling of seeds; the inclined track is used for guiding the seeds to fall down linearly under the action of gravity; the one-dimensional array type position detectors are mounted on the two sides of the inclined track; the wide-spectrum infrared light source is used for providing continuous light illumination of an infrared band; and the light source processing module is used for processing light emitted by the wide-spectrum infrared light source and projecting the light on the surface of the inclined track. The seed infrared reflection spectrum detection efficiency is remarkably improved, the seed falling time is flexibly controlled through the inclined track design, the spectrum measurement integration time is prolonged, and the detection sensitivity is improved; the problems of mechanical wear and signal drifting of a movement mechanism in traditional equipment are avoided, and the detection stability is ensured; the limitation of an array sensor on the pixel size and the cost is broken through; the complex control process of traditional equipment is simplified, and the hardware investment cost is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of agricultural detection, in particular to an infrared spectrum continuous detection device based on dynamic track scanning. Background Art

[0002] Traditional infrared spectroscopy detection technology has significant technical bottlenecks in agricultural seed quality analysis: existing detection equipment is mostly based on mechanical moving parts, with complex structures, and relies on complex processes such as "absorption-detection-release". The control process is cumbersome, and long-term use can easily lead to mechanical wear and signal drift, seriously affecting detection stability; at the same time, array sensors are limited by pixel size and have limited sensitivity, making it difficult to meet high-precision detection requirements. In addition, when using array-type infrared detectors, the cost of a single device exceeds 10,000 yuan, and the high hardware investment seriously restricts the large-scale application of this technology in the agricultural field. The above defects collectively lead to the low efficiency, limited accuracy and lack of economic efficiency of traditional spectrometers in rapid batch detection scenarios.

[0003] Based on the above technical problems, technical personnel in this field urgently need to develop a seed infrared reflection spectrum detection device based on dynamic orbit scanning to achieve efficient acquisition of seed infrared absorption spectrum, and solve the problems of traditional seed detection equipment such as complex structure, cumbersome control, high cost and inability to meet rapid batch detection. Summary of the Invention

[0004] The purpose of the present invention is to provide a seed infrared reflection spectrum detection device based on dynamic orbital scanning to achieve efficient acquisition of seed infrared absorption spectrum, and solve the problems of traditional seed detection equipment such as complex structure, cumbersome control, high cost and inability to meet rapid batch detection.

[0005] In order to achieve the above object, the present invention provides the following technical solutions:

[0006] The present invention provides an infrared spectrum continuous detection device based on dynamic track scanning, the continuous detection device comprising:

[0007] Vibrating feeding module, used to achieve single seed drop; and

[0008] An inclined track is used to guide the seeds to fall in a straight line under the action of gravity, and the time it takes for the seeds to fall is controlled by adjusting the inclination of the inclined track;

[0009] One-dimensional array position detectors are installed on both sides of the inclined track to detect the real-time position of the seeds. The feedback signals of the one-dimensional array position detectors are provided to the vibration feeding module.

[0010] Broad-spectrum infrared light source, used to provide continuous light illumination in the infrared band;

[0011] A light source processing module, configured to process the light emitted by the broadband infrared light source and project the light onto the inclined track surface;

[0012] The continuous detection device also includes:

[0013] a light source detection module, providing a field of view angle and used to detect the real-time intensity of light emitted from the inclined track surface;

[0014] A seed collecting mechanism is capable of moving and containing seeds falling from the inclined track.

[0015] Furthermore, the light source processing module includes a collimating component and

[0016] A light splitting component, wherein the collimating component is used to collimate the light emitted by the broadband infrared light source and irradiate the light on the surface of the light splitting component, and the light emitted by the broadband infrared light source is separated according to the order of wavelength by the light splitting component;

[0017] The focusing component is used to focus the light emitted by the light splitting component. After focusing, the light emitted by the light splitting component can form strip-shaped light arranged in order of wavelength and projected onto the surface of the inclined track.

[0018] Preferably, the light splitting component can use a grating for light splitting, and the number of lines of the grating is selected according to the required resolution.

[0019] Furthermore, the light source detection module includes an infrared lens, which is installed above the inclined track, and the field of view of the infrared lens can completely cover the surface of the inclined track;

[0020] A single-pixel detector is connected to the rear of the infrared lens and is used to detect the real-time intensity of light emitted from the inclined track surface collected by the infrared lens. The signal fed back by the one-dimensional array position detector is also provided to the single-pixel detector to indicate the real-time position of the seed, and the illumination light wavelength information at that position is calculated based on the real-time position of the seed.

[0021] Furthermore, the seed collecting mechanism includes a horizontally arranged two-dimensional displacement platform; and

[0022] The seed collecting box is located above the two-dimensional displacement platform and is used for containing seeds that fall from the inclined track.

[0023] Furthermore, the seed collection box has an array-type hole structure for positioning each seed. The seed collection box is moved by the two-dimensional displacement stage so that the seeds fall into different hole structures on the surface of the seed collection box. The stroke of the two-dimensional displacement stage enables each hole structure on the surface of the seed collection box to be aligned with the exit of the inclined track.

[0024] In the above technical solution, the present invention provides an infrared spectrum continuous detection device based on dynamic track scanning, which has the following beneficial effects:

[0025] The present invention discloses an infrared spectrum continuous detection device based on dynamic track scanning, which significantly improves the detection efficiency of seed infrared reflectance spectrum. It flexibly controls the seed falling time through the inclined track design, prolongs the spectrum measurement integration time, and improves the detection sensitivity. It avoids the mechanical wear and signal drift problems of the motion mechanism in traditional equipment and ensures detection stability. It breaks through the limitations of array sensors in pixel size and cost. It simplifies the complex control process of traditional equipment and reduces hardware investment costs. It is suitable for large-scale rapid seed quality detection in the agricultural field, has the characteristics of high efficiency, stability and economy, and provides an innovative solution for agricultural seed quality analysis. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments described in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0027] Figure 1 A schematic diagram of the overall structure of an infrared spectrum continuous detection device based on dynamic track scanning provided by an embodiment of the present invention.

[0028] Description of reference numerals:

[0029] 1. Vibration loading module; 2. Inclined track; 3. One-dimensional array position detector; 4. Broad-spectrum infrared light source; 5. Collimation component; 6. Spectral component; 7. Focusing component; 8. Infrared lens; 9. Single-pixel detector; 10. Seed collection box; 11. Two-dimensional translation stage. DETAILED DESCRIPTION

[0030] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0031] See also Figure 1 As shown;

[0032] The present invention provides an infrared spectrum continuous detection device based on dynamic track scanning, the continuous detection device comprising:

[0033] Vibration feeding module 1, used to achieve the drop of individual seeds and control whether any seeds enter the subsequent detection process; and

[0034] Inclined track 2 is used to guide the seeds to fall in a straight line under the action of gravity. The time it takes for the seeds to fall is controlled by adjusting the inclination of the inclined track 2. The longer the time it takes for the seeds to fall, the longer the integration time of the subsequent spectral measurement and the better the signal-to-noise ratio, but this will result in a decrease in measurement speed. Specifically, the inclination of the inclined track 2 is adjustable. By controlling the seed falling time, the integration time of the spectral measurement is extended, thereby improving the detection sensitivity.

[0035] One-dimensional array position detectors 3 are installed on both sides of the inclined track 2 to detect the real-time position of seeds. The feedback signal of the one-dimensional array position detectors 3 is provided to the vibration loading module 1 to indicate whether there are seeds on the inclined track 2. When the seeds slide out of the inclined track 2, the one-dimensional array position detectors 3 will control the single seed vibration loading module 1 to start vibration, so that the single seed falls. When the one-dimensional array position detectors 3 detect that there are seeds on the inclined track 2, the one-dimensional array position detectors 3 will control the single seed vibration loading module 1 to stop vibration, so that there is only one seed on the inclined track 2.

[0036] Specifically, the one-dimensional array position detector 3 is used to monitor in real time whether there are seeds on the inclined track 2. When it is detected that the seeds slide out of the inclined track 2, the vibration loading module 1 is controlled to start vibration, so that a single seed falls; when it is detected that there are no seeds on the inclined track 2, the vibration loading module 1 is controlled to turn off vibration.

[0037] A wide-spectrum infrared light source 4 is used to provide continuous light illumination in the infrared band;

[0038] A light source processing module, used for processing the light emitted by the broadband infrared light source 4 and projecting it onto the surface of the inclined track 2;

[0039] The continuous detection device also includes:

[0040] a light source detection module, providing a field of view angle and used to detect the real-time intensity of light emitted from the surface of the inclined track 2;

[0041] The seed collecting mechanism is capable of moving and containing the seeds falling from the inclined track 2. As a further introduction to this embodiment, the light source processing module includes a collimating component 5 and

[0042] The light splitting component 6, the collimating component 5 is used to collimate the light emitted by the broadband infrared light source 4 and irradiate the light on the surface of the light splitting component 6, and the light emitted by the broadband infrared light source 4 is separated according to the order of wavelength by the light splitting component 6;

[0043] The focusing component 7 is used to focus the light emitted by the light splitting component 6. After focusing, the light emitted by the light splitting component 6 can form strip-shaped light arranged in order of wavelengths and projected onto the surface of the inclined track 2.

[0044] As a preferred technical solution of this embodiment, the light splitting component 6 can use a grating for light splitting, and the number of lines of the grating is selected according to the required resolution.

[0045] As a further introduction to this embodiment, the light source detection module includes an infrared lens 8, which is installed above the inclined track 2. The field of view of the infrared lens 8 can completely cover the surface of the inclined track 2;

[0046] A single-pixel detector 9, connected behind the infrared lens 8, is used to detect the real-time intensity of light emitted from the surface of the inclined track 2, collected by the infrared lens 8. The signal fed back by the one-dimensional array position detector 3 is also provided to the single-pixel detector 9, indicating the real-time position of the seed. The wavelength of the illumination light at that location is calculated from the seed's real-time position. Using the single-pixel detector 9 to detect the seed's reflected spectrum avoids the pixel size and cost limitations of traditional array sensors, reducing hardware investment costs.

[0047] As a further introduction to this embodiment, the seed collection mechanism includes a horizontally arranged two-dimensional displacement stage 11; and

[0048] The seed collecting box 10 is located above the two-dimensional displacement platform 11 and is used to contain seeds that fall from the inclined track 2 .

[0049] As a preferred technical solution of this embodiment, the seed collecting box 10 has an array-type hole structure for positioning each seed. The seed collecting box 10 is moved by the two-dimensional displacement platform 11 so that the seeds fall into different hole structures on the surface of the seed collecting box 10. The stroke of the two-dimensional displacement platform 11 can enable each hole structure on the surface of the seed collecting box 10 to be aligned with the exit of the inclined track 2.

[0050] The above description is merely illustrative of certain exemplary embodiments of the present invention. It goes without saying that those skilled in the art will be able to modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the claims.

Claims

1. An infrared spectrum continuous detection device based on dynamic track scanning, characterized in that: The continuous detection device comprises: A vibration loading module (1) for achieving single seed drop; and An inclined track (2) is used to guide the seeds to fall in a straight line under the action of gravity, and the time taken for the seeds to fall is controlled by adjusting the inclination angle of the inclined track (2); One-dimensional array position detectors (3) are installed on both sides of the inclined track (2) and are used to detect the real-time position of the seeds. The feedback signal of the one-dimensional array position detectors (3) is provided to the vibration feeding module (1); A wide-spectrum infrared light source (4) is used to provide continuous light illumination in the infrared band; a light source processing module, used for processing the light emitted by the broadband infrared light source (4) and projecting the light onto the surface of the inclined track (2); The continuous detection device also includes: a light source detection module, providing a field of view angle and used to detect the real-time intensity of light emitted from the surface of the inclined track (2); A seed collecting mechanism is capable of moving and containing seeds falling from the inclined track (2).

2. The infrared spectrum continuous detection device based on dynamic track scanning according to claim 1, characterized in that: The light source processing module includes a collimating component (5) and A light splitting component (6), wherein the collimating component (5) is used to collimate the light emitted by the broadband infrared light source (4), and irradiate the light onto the surface of the light splitting component (6), and the light emitted by the broadband infrared light source (4) is separated by the light splitting component (6) in order of wavelength; A focusing component (7) is used to focus the light emitted by the light splitting component (6); after focusing, the light emitted by the light splitting component (6) can form strip-shaped light arranged in order of wavelengths and projected onto the surface of the inclined track (2).

3. The infrared spectrum continuous detection device based on dynamic track scanning according to claim 2, characterized in that: The light splitting component (6) can use a grating to perform light splitting, and the number of lines of the grating is selected according to the required resolution.

4. The infrared spectrum continuous detection device based on dynamic track scanning according to claim 1, characterized in that: The light source detection module comprises an infrared lens (8) which is mounted above the inclined track (2), and the field of view of the infrared lens (8) is capable of completely covering the surface of the inclined track (2); A single-pixel detector (9) is connected to the rear of the infrared lens (8) and is used to detect the real-time intensity of light emitted from the surface of the inclined track (2) collected by the infrared lens (8). The signal fed back by the one-dimensional array position detector (3) is also provided to the single-pixel detector (9) to indicate the real-time position of the seed, and the wavelength information of the illumination light at the position is calculated based on the real-time position of the seed.

5. The infrared spectrum continuous detection device based on dynamic track scanning according to claim 1, characterized in that: The seed collecting mechanism comprises a horizontally arranged two-dimensional displacement platform (11); and A seed collecting box (10) is located above the two-dimensional displacement platform (11) and is used for containing seeds that fall from the inclined track (2).

6. The infrared spectrum continuous detection device based on dynamic track scanning according to claim 5, characterized in that: The seed collecting box (10) has an array-type hole structure for positioning each seed. The seed collecting box (10) is moved by the two-dimensional displacement platform (11) so that the seeds fall into different hole structures on the surface of the seed collecting box (10). The stroke of the two-dimensional displacement platform (11) can enable each hole structure on the surface of the seed collecting box (10) to be aligned with the outlet of the inclined track (2).

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