Device and method for rapidly evaluating quality of asparagus cochinchinensis based on spectral characteristics

Abstract

The invention relates to the technical field of radix asparagi detection, in particular to a device and method for rapidly evaluating the quality of radix asparagi based on spectral characteristics, and the device comprises a loading assembly for loading radix asparagi detection objects, a conveying assembly for conveying the radix asparagi detection objects, and a detection assembly for detecting the quality of radix asparagi; the loading assembly comprises a base, sliding grooves are symmetrically formed in the two sides of the top of the base in the length direction, sliding blocks are arranged in the sliding grooves in a sliding fit mode, first connecting rods are hinged to the ends, away from the base, of the sliding blocks, arc-shaped rods are hinged to the ends, away from the sliding blocks, of the first connecting rods, and second connecting rods are hinged to the sides, close to the base, of the arc-shaped rods. An empty groove is formed in the lower portion of the base, a telescopic rod is arranged in the empty groove, and the two ends of the telescopic rod are hinged to the bottom ends of the adjacent arc-shaped rods respectively; a stabilizing assembly used for stabilizing movement of the arc-shaped rod is arranged in the empty groove. The device is complete in structure, can guarantee the continuity of the asparagus cochinchinensis pretreatment process and the asparagus cochinchinensis spectrum detection process, and improves the detection efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of asparagus detection, and in particular to a device and method for quickly evaluating the quality of asparagus based on spectral characteristics. Background Art

[0002] Asparagus cochinchinensis, as a commonly used Chinese medicinal material, has the effects of nourishing yin and moistening dryness, clearing the lungs and promoting body fluid, and is widely used in clinical Chinese medicine. However, there are differences in the quality of asparagus cochinchinensis from different origins, which are mainly reflected in their chemical composition, content of active ingredients and biological activity.

[0003] Traditional methods for evaluating the quality of Asparagus mainly rely on empirical methods such as trait identification and microscopic identification. Although these methods have certain reference values, they have the disadvantages of being highly subjective and easily disturbed by external factors. In the prior art, spectral analysis technology was used to analyze the spectral characteristics of Asparagus, which has the advantages of fast analysis speed, high accuracy, and good reproducibility. However, in the prior art, since there is still a gap between the pretreatment process of Asparagus and the spectral detection process of Asparagus, the experimenter needs to send the pretreated Asparagus sample to the detection device for spectral analysis, resulting in the incoherence of the Asparagus pretreatment process and the Asparagus spectral detection process, affecting the detection efficiency.

[0004] In summary, how to solve the problem of inconsistency between the pretreatment process of asparagus and the spectral detection process of asparagus in the prior art, which affects the detection efficiency, has become a difficult problem that needs to be solved urgently in the current field. Therefore, it is necessary to propose a rapid asparagus quality evaluation device and method based on spectral characteristics that can ensure the consistency of the pretreatment process of asparagus and the spectral detection process of asparagus. Summary of the invention

[0005] To solve the above problems, the present invention provides a device and method for rapid evaluation of asparagus quality based on spectral features. Through the design of a loading component, a transmission component and a spectral analysis component, the asparagus pretreatment process and the asparagus spectral detection process are connected, so that the pretreated asparagus can be quickly sent for inspection, and the inspection process is stable and efficient, thereby improving the detection efficiency and accuracy.

[0006] In order to achieve the above-mentioned object, the technical scheme of the present invention is as follows: a device for rapid evaluation of asparagus quality based on spectral characteristics, comprising a loading component for loading an asparagus test object, a conveying component for conveying the asparagus test object, and a detecting component for detecting the asparagus quality;

[0007] The loading assembly includes a base, and the top of the base is symmetrically provided with slide grooves on both sides along the length direction thereof, and sliders are slidably matched in the slide grooves, and the sliders are hinged with a first connecting rod at one end away from the base, and the first connecting rod is hinged with an arc rod at one end away from the slider, and a second connecting rod is hinged at the side of the arc rod close to the base, and the second connecting rod is hinged to the side wall of the base at one end away from the arc rod, and an empty groove is provided at the lower part of the base, and a telescopic rod is provided in the empty groove, and the telescopic rod is electrically connected to a controller, and the controller is used to control the opening and closing of the telescopic rod; the two ends of the telescopic rod are respectively hinged with the bottom ends of the adjacent arc rods; and a stabilizing component for stabilizing the movement of the arc rod is provided in the empty groove;

[0008] The stabilizing assembly includes a center rod, which is fixedly connected to the center position of the top wall in the empty groove. A collar is slidably connected to the center rod, and connecting rods are symmetrically hinged on both sides of the collar. A third connecting rod is hinged on one end of the connecting rod away from the collar, and the other end of the third connecting rod away from the connecting rod is fixedly connected to the adjacent arc rod; the third connecting rod is located between the second connecting rod and the telescopic rod; a limiting plate is fixedly connected to the bottom of the center rod.

[0009] The following principles and beneficial effects are achieved by adopting the above scheme:

[0010] Basic principle: Place the asparagus test object in a container, and then place the container between two slide blocks. Start the telescopic rod through the controller, and the two ends of the telescopic rod extend, driving the bottom of the arc rod to rotate toward the outside of the empty slot. Since the middle of the arc rod is hinged to the shell through the second connecting rod, the top of the arc rod will rotate toward the direction of the slide slot by using the lever principle, and the arc rods on both sides push the slide block through the first connecting rod to clamp the container;

[0011] At this time, the mobile component is started to transmit the asparagus test object to the detection component, and the detection component immediately performs spectral analysis on the asparagus test object, obtains its spectral characteristics, and evaluates its quality based on the spectral characteristics.

[0012] When the lower part of the arc rod rotates toward the outside of the empty slot, the end of the third connecting rod close to the arc rod will move up with the arc rod, and the end of the third connecting rod away from the arc rod will move down and drive the connecting rod to move down, and the connecting rod drives the sleeve ring to move up and down on the center rod, and vice versa. Since the center rod is located at the center of the empty slot, the components on both sides of the center rod move symmetrically, the displacement of the sliders on both sides is the same, and the clamping force is also the same, so that the clamping of the slider is more uniform and stable, and the limit plate can limit the movement of the sleeve ring to prevent it from falling off.

[0013] The above scheme has the following beneficial effects:

[0014] 1. The present invention loads the asparagus test object through the design of a slider, transmits the asparagus test object through a transmission component, and detects and evaluates the quality of the asparagus through a detection component, and integrates the three, thereby connecting the asparagus pretreatment process, the asparagus test object delivery process and the asparagus spectrum detection process, making the entire asparagus detection process coherent, allowing the pretreated asparagus to be quickly delivered for inspection, thereby improving the detection efficiency.

[0015] 2. During the testing process, the asparagus test object is placed for a long time, which will cause it to come into contact with the outside air and oxidize and be affected by external impurities, thereby causing errors in the test results and affecting the quality judgment. Therefore, the integrated design of this device can send the asparagus test object for testing immediately, retaining the original properties of the asparagus test object to the maximum extent, thereby improving the test effect and improving the accuracy of the test.

[0016] 3. In the prior art, the asparagus sample is easily spilled due to unstable hand-holding during the inspection process, making the inspection difficult. Through the design of the collar and the center rod of the present invention, the components on both sides of the center rod move symmetrically, the displacement of the sliders on both sides is the same, and the clamping force is also the same, so that the clamping of the sliders is more uniform and stable, so that the asparagus sample will be stably clamped during the inspection process, and the bottom of the container will be stably supported by the base, so as to effectively prevent the asparagus sample from spilling, thereby ensuring the efficiency and stability of the inspection process.

[0017] Furthermore, the conveying assembly includes a conveyor belt and a support frame, the conveyor belt and the support frame are slidably matched, and the top of the conveyor belt is fixedly connected to the bottom of the base; the controller is used to control the opening and closing of the conveyor belt.

[0018] Beneficial effect: After the asparagus sample is clamped and fixed, the conveyor belt is started by the controller to convey the asparagus sample to the detection component for spectral detection. The support frame can provide stable support for the conveyor belt. Since the top of the conveyor belt is fixedly connected to the bottom of the base, the conveyor belt can stably deliver the asparagus sample to the detection component.

[0019] Furthermore, the detection component includes a spectrometer, which is mounted on the top of the support frame and is slidably matched with the conveyor belt.

[0020] Beneficial effect: When the asparagus sample is conveyed to the bottom of the spectrometer, the controller stops the conveyor belt from rotating, so that the spectrometer can detect the asparagus sample. The support frame can provide stable support for the spectrometer.

[0021] Furthermore, a convenient groove is provided on the top of the base along its width direction.

[0022] Beneficial effect: The design of the convenient slot allows the container loaded with the asparagus sample to be placed between the sliders not only vertically but also horizontally, making the device more convenient to use.

[0023] Furthermore, the slide block and the slide groove are both trapezoidal.

[0024] Beneficial effect: Such a design enables the slider to slide in cooperation with the slide groove more stably, preventing the slider from slipping off the top of the slide groove.

[0025] Furthermore, a side of the sliding block away from the first connecting rod is fixedly connected with an arc-shaped anti-slip clip.

[0026] Beneficial effect: The design of the anti-slip clamp makes the slider's clamping effect on the container more stable, reducing the probability of the container sliding off.

[0027] Furthermore, rectangular grooves are provided on both sides of the top of the base close to the arc-shaped rod.

[0028] Beneficial effect: The design of the rectangular groove ensures that the arc rod will not be blocked by the top of the base when rotating, thereby making the rotation of the arc rod smoother.

[0029] Furthermore, a rapid evaluation method for the quality of Asparagus cochinchinensis based on spectral characteristics comprises the following steps:

[0030] S1, loading: take 10-20g of asparagus test material, place it in a loading container, and place the loading container between two slide blocks for clamping;

[0031] S2, sending for inspection: start the conveyor belt to send the asparagus test object to the spectrometer;

[0032] S3, analysis and evaluation: The spectrometer performs spectral analysis on the asparagus test object to obtain the corresponding spectral characteristics of the asparagus, establishes a comprehensive evaluation model, performs quality analysis and evaluation on it according to its spectral characteristics, and calculates its comprehensive total score.

[0033] Furthermore, spectral characteristics include absorbance, reflectance, emissivity, characteristic peaks, trough positions, spectral morphology and water vapor absorption bands. The comprehensive evaluation model is used to score the above parameters individually according to the absorbance, reflectance, emissivity, characteristic peaks, trough positions, spectral morphology and water vapor absorption of Asparagus cochinchinensis, combined with its water and protein content. The individual scores of the above parameters are added together to obtain a comprehensive total score, with a total comprehensive score of 900 points, with each item accounting for 100 points. 801-900 points are for high-quality Asparagus cochinchinensis, 701-800 points are for good Asparagus cochinchinensis, 601-700 points are for qualified Asparagus cochinchinensis, and below 601 points is for unqualified Asparagus cochinchinensis.

[0034] Furthermore, big data analysis was combined with the spectral analysis process. Based on the scores of the absorbance, reflectivity, emissivity, characteristic peaks, trough positions, spectral morphology, water vapor absorption, moisture and protein content of the asparagus test objects in the spectral analysis, possible quality problems were predicted for the low-scoring features, and corresponding improvement plans were proposed.

[0035] Beneficial effects: The method of the present invention establishes a comprehensive evaluation model through spectral characteristics, and scores various characteristics of asparagus in a digital way. The specific conditions of various characteristics of asparagus can be observed in detail, and combined with big data analysis, possible problems of asparagus can be predicted, and corresponding improvement plans can be proposed, so as to quickly understand the situation of asparagus; and the scores of various characteristics are integrated to facilitate operators to quickly evaluate the quality of asparagus.

[0036] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 It is an axonometric view of a loading assembly in an embodiment of the present invention.

[0038] Figure 2 It is a front cross-sectional view of a loading assembly in an embodiment of the present invention.

[0039] Figure 3 It is a side view of a device for rapid evaluation of asparagus quality based on spectral characteristics in an embodiment of the present invention.

[0040] Figure 4 Schematic diagram of the process of the rapid evaluation method of asparagus quality based on spectral features in an embodiment of the present invention.

[0041] The figure marks in the drawings of the specification include: 1. base; 2. slider; 3. first connecting rod; 4. arc rod; 5. second connecting rod; 6. third connecting rod; 7. telescopic rod; 8. center rod; 9. collar; 10. connecting rod; 11. limit plate; 12. conveyor belt; 13. spectrometer; 14. support frame; 15. anti-slip clip. DETAILED DESCRIPTION

[0042] The following is further described in detail through specific implementation methods:

[0043] Embodiment 1:

[0044] As attached Figure 1-3 As shown, a device for rapid evaluation of asparagine quality based on spectral features includes a loading component for loading asparagine test objects, a conveying component for conveying the asparagine test objects, and a detecting component for detecting the asparagine quality.

[0045] The loading assembly includes a base 1, and the top of the base 1 is symmetrically provided with sliding grooves on both sides along its length direction. Slide blocks 2 are slidably fitted in the sliding grooves. The ends of the slide blocks 2 away from the base 1 are hinged with a first connecting rod 3, and the ends of the first connecting rod 3 away from the slide blocks 2 are hinged with an arc rod 4; the arc rod 4 is also hinged with a second connecting rod 5 on the side close to the base 1, and the end of the second connecting rod 5 away from the arc rod 4 is hinged to the side wall of the base 1.

[0046] An empty slot is opened at the lower part of the base 1, and a telescopic rod 7 is arranged in the empty slot. The telescopic rod 7 is electrically connected to a controller, and the controller is used to control the opening and closing of the telescopic rod 7; the two ends of the telescopic rod 7 are respectively hinged to the bottom ends of the adjacent arc-shaped rods 4; the slider 2 is welded with an arc-shaped anti-slip clip 15 on the side away from the first connecting rod 3.

[0047] A stabilizing component for stabilizing the movement of the arc rod 4 is provided in the empty groove; the stabilizing component includes a center rod 8, which is welded to the center position of the top wall in the empty groove, and a ring 9 is slidably connected to the center rod 8. Connecting rods 10 are symmetrically hinged on both sides of the ring 9, and the ends of the connecting rods 10 away from the ring 9 are hinged to the third connecting rod 6, and the ends of the third connecting rod 6 away from the connecting rod 10 are welded to the adjacent arc rod 4; the third connecting rod 6 is located between the second connecting rod 5 and the telescopic rod 7; a limiting plate 11 is welded to the bottom of the center rod 8, and the limiting plate 11 can limit the movement range of the ring 9 to prevent the ring 9 from falling off.

[0048] Rectangular grooves are provided on both sides of the top of the base 1 close to the arc rod 4. The design of the rectangular grooves ensures that the arc rod 4 will not be blocked by the top of the base 1 when rotating, thereby making the rotation of the arc rod 4 smoother.

[0049] The conveying assembly includes a conveyor belt 12 and a support frame 14. The conveyor belt 12 and the support frame 14 are slidably matched, and the top of the conveyor belt 12 is fixedly connected with the bottom of the base 1 by bolts; the controller is used to control the opening and closing of the conveyor belt 12.

[0050] The detection component includes a spectrometer 13 , which is mounted on the top of a support frame 14 by bolts, and the spectrometer 13 is slidably matched with the conveyor belt 12 .

[0051] The specific implementation process is as follows:

[0052] Place the asparagus test object in the container, and then place the container between the two sliders 2, start the telescopic rod 7 through the controller, and the two ends of the telescopic rod 7 extend, driving the bottom of the arc rods 4 on both sides to rotate toward the outside of the empty groove. Since the middle part of the arc rod 4 is hinged to the side wall of the shell through the second connecting rod 5, using the lever principle, the top of the arc rod 4 will rotate toward the direction of the slide groove, and the arc rods 4 on both sides will push the slider 2 through the first connecting rod 3. At this time, the anti-slip clamp 15 clamps the container and fixes it.

[0053] When the lower part of the arc rod 4 rotates toward the outside of the empty slot, the end of the third connecting rod 6 close to the arc rod 4 will move up with the arc rod 4, and the end of the third connecting rod 6 away from the arc rod 4 will move down and drive the connecting rod 10 to move down, and the connecting rod 10 drives the ring 9 to move downward on the center rod 8, and vice versa. Since the center rod 8 is located at the center position of the top wall in the empty slot, the components on both sides of the center rod 8 move symmetrically, and the displacement of the sliders 2 on both sides is the same, so that the clamping force of the anti-slip clamp 15 is also the same, so that the clamping of the anti-slip clamp 15 is more uniform and stable.

[0054] After the clamping and fixing is completed, the conveyor belt 12 is started by the controller to convey the asparagus sample to the spectrometer 13 for spectral detection. Since the top of the conveyor belt 12 is fixedly connected to the bottom of the base 1, the conveyor belt 12 can stably convey the asparagus sample to the detection component. Since the conveyor belt 12 and the support frame 14 are slidably matched, the support frame 14 can provide stable support for the conveyor belt 12, so that the conveyor belt 12 can run more stably.

[0055] After the asparagus sample is conveyed to the bottom of the spectrometer 13, the controller stops the conveyor belt 12 from rotating, so that the spectrometer 13 can detect the asparagus sample, analyze the spectral characteristics of the asparagus sample, and analyze the quality of the asparagus sample according to its spectral characteristics. Since the spectrometer 13 is bolted on the top of the support frame 14, the support frame 14 can provide stable support for the spectrometer 13.

[0056] The present invention loads the asparagus test objects through the design of the slider 2, conveys the asparagus test objects through the conveyor belt 12, and detects and evaluates the quality of the asparagus through the analyzer 13, and integrates the three, thereby connecting the asparagus pretreatment process, the asparagus test object delivery process and the asparagus spectral detection process, making the entire asparagus detection process coherent, allowing the asparagus samples to be quickly delivered for inspection, thereby improving the detection efficiency.

[0057] This solution enables the components on both sides of the center rod 8 to move symmetrically, the displacement of the sliders 2 on both sides is the same, and the clamping force is also the same, so that the clamping of the sliders 2 is more uniform and stable, so that the asparagus sample will be stably clamped during the inspection process, and the bottom of the container will be stably supported by the base 1, which can effectively prevent the asparagus sample from spilling, thereby ensuring the efficiency and stability of the detection process.

[0058] During the testing process, the asparagus test object is left for a long time and will come into contact with the outside air to oxidize and be affected by external impurities, which will cause errors in the test results and affect the quality judgment. Therefore, the integrated design of this device can send the asparagus test object for testing immediately, retaining the original properties of the asparagus test object to the maximum extent, thereby improving the testing effect and increasing the accuracy of the test.

[0059] Embodiment 2:

[0060] As attached Figure 1-3 As shown, different from the above-mentioned embodiment, the slider 2 and the slide groove are both trapezoidal.

[0061] The specific implementation process is as follows:

[0062] During the sliding process of the slider 2, the trapezoidal design enables the slider 2 to slide in cooperation with the slide groove more stably, thereby preventing the slider 2 from slipping off the top of the slide groove.

[0063] Embodiment 3:

[0064] As attached Figure 1-3 As shown, different from the above-mentioned embodiment, a convenient groove is opened on the top of the base 1 along its width direction.

[0065] The specific implementation process is as follows:

[0066] When placing the container, the design of the convenient slot allows the container loaded with the asparagus sample to be placed between the sliders 2 in the vertical direction as well as being placed directly between the sliders 2 in the horizontal direction, making the device more convenient to use.

[0067] Embodiment 4:

[0068] As attached Figure 1-4 As shown, different from the above embodiment, a method for rapid evaluation of asparagus quality based on spectral characteristics comprises the following steps:

[0069] S1, loading: Take 10g of the asparagus test object, place it in a loading container, and place the loading container between two slide blocks 2 for clamping.

[0070] S2, sending for inspection: starting the conveyor belt 12 to send the asparagus test object to the spectrometer 13.

[0071] S3, analysis and evaluation: The spectrometer 13 performs spectral analysis on the asparagus test object to obtain the spectral characteristics of the corresponding asparagus; based on the spectral characteristic data of historical asparagus detection, the spectral images and spectral data of the highest quality asparagus samples are screened out, and used as a comparison benchmark to establish a comprehensive evaluation model, and the spectral images and spectral data of the highest quality asparagus samples are updated in real time during the detection process; the quality of the asparagus samples is analyzed and evaluated based on their spectral characteristics, and their comprehensive total score is calculated. Spectral features include absorbance, reflectance, emissivity, characteristic peaks, trough positions, spectral morphology and water vapor absorption bands. The comprehensive evaluation model is used to score the above parameters separately according to the absorbance, reflectance, emissivity, characteristic peaks, trough positions, spectral morphology and water vapor absorption of asparagus, combined with its water and protein content. The individual scores of the above parameters are added together to obtain a comprehensive total score, which is 900 points in total, with each item accounting for 100 points. 801-900 points are for high-quality asparagus, 701-800 points are for good asparagus, 601-700 points are for qualified asparagus, and less than 601 points are for unqualified asparagus. In the process of spectral analysis, big data analysis is combined. According to the scores of the absorbance, reflectance, emissivity, characteristic peaks, trough positions, spectral morphology, water vapor absorption, water and protein content of the asparagus test object in the spectral analysis, the quality problems that may occur are predicted for the low-scoring features, and corresponding improvement plans are proposed.

[0072] The specific implementation process is as follows:

[0073] Take 10g of asparagus test object, place it in a beaker, place the beaker between the sliders 2 through the convenient slot and clamp it, start the conveyor belt 12 to convey the asparagus test object to the bottom of the spectrometer 13, perform spectral detection on the asparagus test object, compare and analyze its spectral image with the spectral image of historical high-quality asparagus, and calculate its individual scoring data according to the error value, absorbance 86 points, reflectivity 72 points, emissivity 86 points, characteristic peak 64 points, trough position 87 points, spectral morphology 88 points, water vapor absorption 90 points, moisture 85 points and protein content 89 points, with a comprehensive total score of 747 points, which belongs to good asparagus. Big data analyzes the scores of each item and finds that its characteristic peak score is low, which means that its peak is far from the peak of the spectral image of historical high-quality asparagus; big data analysis gives a prediction problem: the asparagus may have problems such as heavy metal residues, pesticide residues and microbial attachment, and provides improvement plans: it is recommended to regularly replace fertilizers and pesticides.

[0074] An alarm light is installed on the spectrometer 13. If the comprehensive score of the asparagus is lower than 601 points, it will be judged as unqualified asparagus. At this time, the alarm light will start to flash to remind the operator that the asparagus is unqualified. At the same time, big data analysis will analyze the possible problems of the asparagus and the corresponding improvement plans for the operator's reference.

[0075] If the comprehensive score of Asparagus cochinchinensis is higher than the comprehensive score of the highest quality Asparagus cochinchinensis sample in history, the comprehensive evaluation model will update the spectral image and spectral data of the highest quality Asparagus cochinchinensis sample in real time to optimize subsequent comparison and detection.

[0076] The method of the present invention uses an integrated detection process, so that the asparagus processing process and the asparagus detection process maintain consistency, shortens the time for sending the asparagus for inspection, and reduces the time that the asparagus detection object is affected by the outside world, thereby improving the efficiency and accuracy of the inspection.

[0077] Based on the spectral feature data of historical Asparagus cochinchinensis detection, the spectral images and spectral data of the highest quality Asparagus cochinchinensis samples were screened out, and used as a comparison benchmark to establish a comprehensive evaluation model. The comprehensive evaluation model digitizes and scores the various characteristics of Asparagus cochinchinensis, which can observe the specific conditions of each characteristic of Asparagus cochinchinensis in detail. Combined with big data analysis, it can predict possible problems with Asparagus cochinchinensis and propose corresponding improvement plans, so as to quickly understand the situation of Asparagus cochinchinensis. The scores of various characteristics are combined to facilitate operators to quickly evaluate the quality of Asparagus cochinchinensis.

[0078] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention.

Claims

1. A rapid evaluation device for the quality of asparagus based on spectral characteristics, characterized in that: It includes a loading component for loading the asparagus test object, a conveying component for conveying the asparagus test object, and a detection component for detecting the quality of the asparagus; The loading assembly comprises a base (1), the top of the base (1) is provided with sliding grooves symmetrically on both sides along the length direction thereof, the sliding grooves are slidably matched with sliders (2), the sliders (2) are hingedly connected to the first connecting rod (3) at one end away from the base (1), the first connecting rod (3) is hingedly connected to the arc rod (4) at one end away from the slider (2), the arc rod (4) is hingedly connected to the second connecting rod (5) at the side close to the base (1), the second connecting rod (5) is hingedly connected to the side wall of the base (1) at one end away from the arc rod (4), the base (1) is provided with an empty groove at the bottom, a telescopic rod (7) is arranged in the empty groove, the telescopic rod (7) is electrically connected to a controller, and the controller is used to control the opening and closing of the telescopic rod (7); the two ends of the telescopic rod (7) are respectively hingedly connected to the bottom ends of the adjacent arc rods (4); a stabilizing assembly for stabilizing the movement of the arc rod (4) is arranged in the empty groove; The stabilizing component comprises a central rod (8), the central rod (8) being fixedly connected to the center position of the top wall in the hollow groove, a collar (9) being slidably connected to the central rod (8), connecting rods (10) being symmetrically hinged on both sides of the collar (9), a third connecting rod (6) being hinged at one end of the connecting rod (10) away from the collar (9), and a third connecting rod (6) being fixedly connected to an adjacent arc-shaped rod (4) at one end of the third connecting rod (6) away from the connecting rod (10); the third connecting rod (10) being located between the second connecting rod (5) and the telescopic rod (7); and a limiting plate (11) being fixedly connected at the bottom of the central rod (8).

2. The device for rapid evaluation of asparagus quality based on spectral characteristics according to claim 1, characterized in that: The conveying assembly comprises a conveyor belt (12) and a support frame (14); the conveyor belt (12) and the support frame (14) are slidably matched, and the top of the conveyor belt (12) is fixedly connected to the bottom of the base (1); and the controller is used to control the opening and closing of the conveyor belt (12).

3. The device for rapid evaluation of asparagus quality based on spectral characteristics according to claim 2, characterized in that: The detection component comprises a spectrometer (13), which is mounted on the top of a support frame (14), and the spectrometer (13) is slidably matched with a conveyor belt (12).

4. The device for rapid evaluation of asparagus quality based on spectral characteristics according to claim 3 is characterized in that: A convenient groove is provided on the top of the base (1) along its width direction.

5. The device for rapid evaluation of asparagus quality based on spectral characteristics according to claim 4 is characterized in that: The slide block (2) and the slide groove are both trapezoidal.

6. The device for rapid evaluation of asparagus quality based on spectral characteristics according to claim 5 is characterized in that: An arc-shaped anti-slip clip (15) is fixedly connected to one side of the sliding block (2) away from the first connecting rod (3).

7. The device for rapid evaluation of asparagus quality based on spectral characteristics according to claim 6, characterized in that: Rectangular grooves are formed on two sides of the top of the base (1) close to the arc-shaped rod (4).

8. A method for rapid evaluation of asparagus quality based on spectral features, according to the rapid evaluation method of the asparagus quality rapid evaluation device based on spectral features according to any one of claims 1 to 7, characterized in that: The following steps are involved: S1, loading: take 10-20g of the asparagus test object, place it in a loading container, and place the loading container between two slide blocks (2) for clamping; S2, sending for inspection: starting the conveyor belt (12) to send the asparagus test object to the spectrometer (13); S3, analysis and evaluation: the spectrometer (13) performs spectral analysis on the asparagus test substance to obtain the spectral characteristics corresponding to the asparagus; Based on the spectral characteristic data of historical asparagus detection, the spectral images and spectral data of the highest quality asparagus samples are screened out, and used as a comparison benchmark to establish a comprehensive evaluation model, and the spectral images and spectral data of the highest quality asparagus samples are updated in real time during the detection process; The comprehensive evaluation model analyzes and evaluates the quality of the asparagus test substance based on its spectral characteristics and calculates its comprehensive total score.

9. The method for rapid evaluation of the quality of Asparagus cochinchinensis based on spectral characteristics according to claim 8, characterized in that: Spectral characteristics include absorbance, reflectance, emissivity, characteristic peaks, trough positions, spectral morphology, and water vapor absorption bands; The comprehensive evaluation model was used to score the above parameters individually according to the absorbance, reflectance, emissivity, characteristic peaks, trough positions, spectral morphology and water vapor absorption of Asparagus cochinchinensis, and combined with its water and protein content. The individual scores of the above parameters were added together to obtain a comprehensive total score, which was 900 points in total, with each item accounting for 100 points. 801-900 points were high-quality Asparagus cochinchinensis, 701-800 points were good Asparagus cochinchinensis, 601-700 points were qualified Asparagus cochinchinensis, and below 601 points were unqualified Asparagus cochinchinensis.

10. The method for rapid evaluation of asparagus quality based on spectral characteristics according to claim 9, characterized in that: Big data analysis is combined with the spectral analysis process. According to the scores of the absorbance, reflectivity, emissivity, characteristic peaks, trough positions, spectral morphology, water vapor absorption, moisture and protein content of the asparagus test objects in the spectral analysis, possible quality problems are predicted for the low-scoring features, and corresponding improvement plans are proposed.

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