A near-infrared digital instrument for detecting the taste of brown rice and its analysis method

Abstract

The present invention discloses a near-infrared digital instrument for detecting the taste of brown rice and an analysis method thereof. The present invention fills a sample trough with a brown rice sample through a storage bin. As a slide plate slides, the sample trough filled with the brown rice sample moves to just above a second glass. A pressing plate slides downward by a spring, and the brown rice sample inside the sample trough is pressed by the first glass of the pressing plate. At this time, the brown rice sample is detected by cooperation between a light emitting module and a light receiving element, thereby obtaining spectral data of the brown rice sample. The detection method of the present application does not require the addition of reagents, has high safety, and a simple operation process. At the same time, the detection process is non-destructive, does not affect the use of samples, and is conducive to batch sorting and detection. Quantitative data can be established based on spectral data and taste degree, which is conducive to evaluation and reference.

Description

Technical Field

[0001] The patent of this invention relates to the field of brown rice detection technology, specifically a near-infrared digital instrument for brown rice taste detection and its analysis method. Background Art

[0002] As the world's leading rice producer and consumer, China faces a growing consumer demand for delicious rice. However, the taste of rice is difficult to quantify, making it difficult for consumers to purchase truly delicious rice. Conversely, rice growers, unable to quantify rice quality, are forced to rely on high-yield, low-quality, bulk varieties to maintain basic profits. This has led to a relatively backward rice industry overall, making it difficult to achieve high-quality development.

[0003] The existing rice taste detection method is mainly based on manual tasting, which gives a sensory evaluation of the sample through subjective tasting. The evaluation is mainly based on indicators such as rice viscosity, hardness, sweetness, aroma, etc., and the sample is given an evaluation such as excellent, good, qualified, or unqualified to roughly judge the taste grade of the rice.

[0004] The shortcomings of the existing evaluation methods are still very obvious: First, the evaluation is too subjective. For example, if the judges usually have too many samples, the accuracy of the evaluation will decrease, and the cooking conditions of the samples will also affect the judgment of the taste; second, individual differences. For example, different judges have different preferences, and the results they obtain may be completely different; third, quantity restrictions. The number of samples that each judge can evaluate is limited, so it is difficult to conduct a unified national standard evaluation. Summary of the Invention

[0005] The purpose of this patent is to provide a near-infrared digital instrument for brown rice taste detection and an analysis method thereof to solve the problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical scheme: a near-infrared digital instrument for detecting the taste of brown rice, comprising a casing, a slide fixedly connected to the interior of the casing, the slide comprising a base and a cover plate, the cover plate fixedly covered on the interior of the base, a storage bin for storing brown rice samples to be detected fixedly connected above the slide, a lower end discharge port of the storage bin is communicated with the inner cavity of the slide, a slide is slidably connected to the interior of the slide by a first motor, a sample laying groove is provided on the sidewall of the slide for containing the brown rice samples to be detected in the storage bin, an upper bracket and a lower bracket are fixedly connected to the upper and lower sides of the slide respectively, a light emitting module and a light receiving element are fixedly mounted on the upper bracket and the lower bracket respectively, a pressing plate for pressing the brown rice sample inside the sample laying groove is slidably connected to the upper bracket by a spring, a first glass is fixedly connected to the side of the pressing plate in contact with the brown rice sample, and a second glass is fixedly connected just above the light receiving element and on the sidewall of the slide.

[0007] Preferably, a discharge pipe is fixedly connected to the side of the second glass away from the storage bin and below the slide seat, the upper end of the discharge pipe is connected to the slide seat, and the lower end of the discharge pipe passes through the side wall of the casing and extends to the outside.

[0008] Preferably, the lower edges on both sides of the pressing plate are chamfered.

[0009] Preferably, the interior of the casing is fixedly connected to a discharge bin, the lower end outlet of the discharge bin is fixedly connected to a feed pipe, one end of the feed pipe is communicated with the storage bin, the interior of the feed pipe is connected to an auger blade which is rotated by a second motor to drive the brown rice sample inside the feed pipe to move toward the storage bin, the external cover of the feed pipe is provided with a debris discharge pipe, the side wall of the feed pipe located inside the debris discharge pipe is provided with sieve holes, and the lower end of the debris discharge pipe passes through the side wall of the casing and extends to the outside.

[0010] Preferably, a controller is fixedly mounted on the upper side of the housing, and the controller is electrically connected to the first motor, the second motor, the light emitting module and the light receiving element.

[0011] Preferably, a fan is installed on the upper part of the exhaust pipe, and the air outlet of the fan is in the exhaust pipe and located above the sieve hole.

[0012] A near-infrared digital instrument analysis method for brown rice taste detection includes a database establishment process and a data detection process.

[0013] Database creation:

[0014] S1. Preparation of standard samples;

[0015] S2, standard sample pretreatment;

[0016] S3, testing the standard brown rice sample to perform spectral detection to obtain spectral data;

[0017] S4. Take the average value of multiple samplings to obtain the spectral characteristic data D n ;

[0018] S5, spectral characteristic data D n Form a corresponding relationship with the standard sample number;

[0019] S6. Forming spectral characteristic data D n Database B of correspondence with brown rice taste;

[0020] Data detection process:

[0021] M1. Preparation of test samples;

[0022] M2. Sample pretreatment;

[0023] M3, performing spectral detection on the brown rice sample to obtain spectral data;

[0024] M4, take the average value of multiple sampling to obtain the spectral characteristic data A;

[0025] M5. Transfer the spectral feature data A into database B to calculate the corresponding taste level.

[0026] Preferably, there is a corresponding relationship between the standard sample number in S5 and the taste degree.

[0027] Compared with the existing technology, the beneficial effects of the present invention are:

[0028] 1. The method of the present application can establish a unique database and quantitative model. The quantitative database formed by all the detected rice sample spectral data will become a comparison database for rice sample detection. If any detected rice sample spectral quantitative data matches any data in the database, the corresponding quantitative data will be obtained, thereby obtaining quantitative reference data for taste, which is convenient for the implementation and evaluation of the standard.

[0029] 2. The present invention fills the sample trough with unpolished rice sample through a storage bin. As the slide plate slides, the sample trough filled with unpolished rice sample moves to just above the second glass. The pressing plate slides downward by a spring, and the unpolished rice sample inside the sample trough is pressed tightly by the first glass of the pressing plate. At this time, the unpolished rice sample is detected by the cooperation of the light emitting module and the light receiving element, thereby obtaining spectral data of the unpolished rice sample. The detection, processing, and analysis steps are all completed automatically. The whole process does not require high operator requirements and has universality.

[0030] 3. The patent of the present invention drives the brown rice sample to move inside the feeding pipe through the auger blade. During the movement, the sieve holes can be used to screen out fixed impurities mixed in the brown rice sample. The sieved brown rice sample will be collected in the storage bin along the feeding pipe, avoiding the impurities mixed in the brown rice sample from affecting the detection accuracy, thereby effectively improving the accuracy of the detection of brown rice samples. Moreover, the non-destructive detection process is conducive to the sorting of batch samples. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 This is a schematic diagram of the overall structure of the patent of this invention;

[0032] Figure 2 This is a schematic diagram of the structure of the machine housing, slide seat, storage bin, discharge bin and impurity discharge pipe of the patented invention;

[0033] Figure 3 This is a cross-sectional view of the overall structure of the patent of this invention;

[0034] Figure 4 Patent for this invention Figure 3Schematic diagram of point A;

[0035] Figure 5 This is a schematic diagram of the structure of the base, storage bin, slide plate, light emitting module and light receiving element of the patented invention;

[0036] Figure 6 This is an exploded view of the slide, storage bin, slide plate, light emitting module and light receiving element of the patented invention;

[0037] Figure 7 This is a cross-sectional view I of the material storage bin, slide plate, sample laying trough, light emitting module and light receiving element of the patented invention;

[0038] Figure 8 This is a cross-sectional view II of the material storage bin, slide plate, sample laying trough, light emitting module and light receiving element of the patented invention;

[0039] Figure 9 This is an exploded view of the slide, upper bracket, lower bracket, light emitting module, light receiving element and pressure plate of the patented invention;

[0040] Figure 10 This is a schematic diagram of the process of the patent of this invention.

[0041] In the figure: 1. Casing, 2. Slide, 201. Base, 202. Cover, 3. Storage bin, 4. First motor, 401. Screw, 5. Slide, 501. Sample laying trough, 6. Upper bracket, 7. Lower bracket, 8. Light emitting module, 9. Light receiving element, 10. Spring, 11. Press plate, 12. First glass, 13. Second glass, 14. Discharge pipe, 15. Discharge bin, 16. Feed pipe, 17. Second motor, 18. Auger blades, 19. Discharge pipe, 20. Controller, 21. Fan. DETAILED DESCRIPTION

[0042] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0043] See also Figure 1-10The present invention provides a technical solution: a near-infrared digital instrument for detecting the taste of brown rice, comprising a casing 1, a slide 2 fixedly connected to the interior of the casing 1, the slide 2 comprising a base 201 and a cover 202, the cover 202 fixedly covering the interior of the base 201, a storage bin 3 for storing brown rice samples to be detected fixedly connected to the top of the slide 2, a discharge port at the lower end of the storage bin 3 is communicated with the inner cavity of the slide 2, a slide 5 is slidably connected to the interior of the slide 2 via a first motor 4, the first motor 4 is fixedly mounted on the side wall of the slide 2, and two sides of the slide 2 are symmetrically connected to two screw rods 401 for rotation, and the two sides of the slide 2 are respectively engaged and sleeved on the two screw rods 401, and the ends of the two screw rods 401 are connected by belts to achieve synchronous rotation of the two screw rods 401, and the output shaft of the first motor 4 is connected to the end of any screw rod 401 by a belt, After the first motor 4 is started, the output shaft of the first motor 4 will drive the two screw rods 401 to rotate at the same time, prompting the two screw rods 401 to drive the slide 5 to slide in the slide 2, and the side wall of the slide 5 is provided with a sample laying groove 501 for containing the unpolished rice sample to be detected in the storage bin 3, prompting the unpolished rice sample to be detected to be laid flat on the inside of the sample laying groove 501 with the same thickness, thereby ensuring the accuracy of detection, the upper and lower sides of the slide 2 are respectively fixedly connected with an upper bracket 6 and a lower bracket 7, and the upper bracket 6 and the lower bracket 7 are respectively fixedly mounted with a light emitting module 8 and a light receiving element 9, and the upper bracket 6 is slidably connected with a pressing plate 11 for pressing the unpolished rice sample inside the sample laying groove 501 by a spring 10, the side of the pressing plate 11 in contact with the unpolished rice sample is fixedly connected with a first glass 12, and a second glass 13 is fixedly connected directly above the light receiving element 9 and on the side wall of the slide 2.

[0044] like Figure 3 、 4 As shown, when the slide plate 5 is not working, the sample laying groove 501 is located on the left side of the discharge port of the storage bin 3, and the storage bin 3 is closed by the upper side wall of the slide plate 5. After the unpolished rice sample to be tested is poured into the interior of the storage bin 3, the first motor 4 is started, prompting the first motor 4 to drive the slide plate 5 to slide to the right on the slide seat 2. When the sample laying groove 501 is below the discharge port of the storage bin 3, the unpolished rice sample inside the storage bin 3 flows from the discharge port of the storage bin 3 to the interior of the sample laying groove 501. As the slide plate 5 slides, Figure 7 As shown, when the sample laying groove 501 is located directly above the second glass 13, the pressure plate 11 is slid downward by the spring 10, and the unpolished rice sample inside the sample laying groove 501 is pressed by the pressure plate 11 and the first glass 12. At this time, the unpolished rice sample is detected by the cooperation of the light emitting module 8 and the light receiving element 9, thereby obtaining the spectral data of the unpolished rice sample.

[0045] like Figure 8As shown, in order to discharge the tested brown rice sample out of the casing, that is, at the stage of sample emptying, specifically, the second glass 13 is fixedly connected to a discharge pipe 14 on a side away from the storage bin 3 and below the slide 2, the upper end of the discharge pipe 14 is communicated with the slide 2, and the lower end of the discharge pipe 14 passes through the side wall of the casing 1 and extends to the outside.

[0046] After the detection is completed, the first motor 4 is started again, prompting the first motor 4 to continue to drive the slide plate 5 to slide to the right, so that the sample laying groove 501 will move to the top of the discharge pipe 14 (such as Figure 8 As shown), at this time, the brown rice sample inside the sample trough 501 will flow into the discharge pipe 14 and be discharged from the discharge pipe 14 to the outside of the casing 1, and then the first motor 4 is started in the reverse direction to cause the slide plate 5 to return to the position as shown. Figure 3 、 4 In the state shown, during the reverse sliding reset process of the slide plate 5, a batch of unpolished rice samples to be detected will flow into the inside of the sample laying groove 501 from the discharge port of the storage bin 3 again, and then the unpolished rice samples can be detected multiple times, thereby the accuracy of detection can be improved according to the data of repeatedly detecting the unpolished rice samples. After the detection is completed, in order to use up all the unpolished rice samples inside the storage bin 3, so as to carry out the detection of different unpolished rice samples next time, the first motor 4 can be repeatedly started. When the discharge pipe 14 is not discharged with the unpolished rice sample, the first motor 4 is stopped. At this moment, the inside of the storage bin 3 is in an empty state. In addition, the material of the storage bin 3 and the casing 1 can also be a transparent plastic material, thereby helping the experimenter to observe whether the unpolished rice samples in the storage bin 3 are all discharged.

[0047] like Figure 7 As shown, in order to prevent the pressure plate 11 from interfering with the sliding of the slide plate 5 in the slide seat 2, specifically, the lower end edges on both sides of the pressure plate 11 are chamfered. After the chamfering, when the slide plate 5 slides, the slide plate 5 can easily lift the pressure plate 11 through the chamfered edges of the pressure plate 11, thereby preventing the pressure plate 11 from interfering with the sliding of the slide plate 5 in the slide seat 2.

[0048] The brown rice sample to be tested may contain impurities such as powder or broken rice grains, which can easily affect the quality of the test. Figure 2 、 3 As shown, in order to be able to remove impurities doped in the brown rice sample, that is, the pre-treatment process, specifically, the interior of the casing 1 is fixedly connected with a discharge bin 15, the lower end discharge port of the discharge bin 15 is fixedly connected with a delivery pipe 16, one end of the delivery pipe 16 is communicated with the storage bin 3, the interior of the delivery pipe 16 is rotated by a second motor 17 and is connected with an auger blade 18 for driving the brown rice sample inside the delivery pipe 16 to move toward the storage bin 3, as shown in FIG. Figure 2 、 3As shown, the second motor 17 is fixedly mounted on the side wall of one end of the feed pipe 16, and the output shaft of the second motor 17 is connected to the end of the auger blade 18, so that when the second motor 17 is started, the output shaft of the second motor 17 will drive the auger blade 18 to rotate. When the auger blade 18 rotates, the unpolished rice sample inside the discharge bin 15 can be transported to the inside of the storage bin 3 along the feed pipe 16. The outer cover of the feed pipe 16 is provided with a discharge pipe 19, and the side wall of the feed pipe 16 located inside the discharge pipe 19 is provided with a sieve hole, and the lower end of the discharge pipe 19 passes through the side wall of the casing 1 and extends to the outside.

[0049] Start the second motor 17, so that the second motor 17 drives the auger blade 18 to rotate. At this time, the auger blade 18 will drive the brown rice sample to move inside the feed pipe 16. During the movement, the sieve holes can be used to screen out the fixed impurities mixed in the brown rice sample. At this time, the impurities will be discharged from the casing 1 along the discharge pipe 19. The sieved brown rice sample will be collected in the storage bin 3 along the feed pipe 16, thereby effectively improving the accuracy of detecting the brown rice sample. A fan 21 is installed on the upper part of the discharge pipe 19, and the air outlet of the fan 21 is in the discharge pipe 19 and above the sieve holes. The dust and the like can be blown away by the wind blowing of the fan 21 to avoid adhesion and affecting the detection.

[0050] Specifically, the upper side of the casing 1 is fixedly mounted with a controller 20, which is electrically connected to the first motor 4, the second motor 17, the light emitting module 8 and the light receiving element 9. The controller 20 controls the first motor 4, the second motor 17, the light emitting module 8 and the light receiving element 9 to operate and store related data and detect logical relationships. The controller 20 is provided with a button for controlling the first motor 4, the second motor 17, the light emitting module 8 and the light receiving element 9 and a display screen for displaying spectral data information. That is, when detecting the brown rice sample, the brown rice sample is poured into the inside of the discharge bin 15, and the second motor 17 is started by the button control on the controller 20. At this time, the second motor 17 is turned on. After the machine 17 drives the auger blade 18 to rotate, the unpolished rice sample is screened and transported to the inside of the storage bin 3, and then the first motor 4, the light emitting module and the light receiving element 9 are started by controlling the button of the controller 20 (the first motor 4, the light emitting module 8 and the light receiving element 9 can share one button). At this time, the first motor 4 drives the slide plate 5 to slide, prompting the unpolished rice sample inside the storage bin 3 to be poured into the sample laying groove 501. Then, the light emitting module 8 irradiates the unpolished rice sample inside the sample laying groove 501, and the infrared light passes through the unpolished rice sample and irradiates the light receiving element 9 to form spectral data. The light receiving element 9 transmits the spectral data to the controller 20 for storage and displays it through the display screen.

[0051] A near-infrared digital instrument analysis method for brown rice taste detection includes a database establishment process and a data detection process. The first step is to establish the database:

[0052] S1. Preparation of standard samples, such as classification and impurity removal of standard samples;

[0053] S2, standard sample pre-treatment, i.e., the impurity removal process in the feed pipe 16 of this application;

[0054] S3, testing the standard brown rice sample to perform spectral detection to obtain spectral data;

[0055] S4. Take the average value of multiple samplings to obtain the spectral characteristic data D n ;

[0056] S5, spectral characteristic data D n Form a corresponding relationship with the standard sample number;

[0057] S6. Forming spectral characteristic data D n Database B of correspondence with brown rice taste;

[0058] Furthermore, there is a corresponding relationship between the standard sample number in S5 and the taste degree.

[0059] Data detection process:

[0060] M1. Preparation of test samples;

[0061] M2. Sample pretreatment;

[0062] M3, testing the standard brown rice sample to perform spectral detection to obtain spectral data;

[0063] M4, take the average value of multiple sampling to obtain the spectral characteristic data A;

[0064] M5. Transfer the spectral feature data A into database B for data comparison, and calculate the corresponding taste level.

[0065] Note that since the detection process of the present application structure is a non-destructive detection, the brown rice taste in step S5 here can be processed and evaluated after the sample is detected. Taking the quantitative data 0-100 as an example, the more delicious the rice sample, the higher the score, and vice versa. The spectral feature data can be bound to the quantitative value of the mouthfeel, and then the standard brown rice samples with different tastes are continuously detected and accumulated for multiple times to obtain a database of the corresponding relationship between the spectral feature data and the brown rice taste.

[0066] Because taste characteristics are influenced by multiple factors, each standard brown rice sample can be analyzed at multiple wavelengths and assigned a quantitative score. The sample brown rice samples are then tested at these multiple wavelengths and the corresponding quantitative values are then summed up to obtain a specific value for evaluating taste.

[0067] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A near-infrared digital instrument for brown rice taste detection, comprising a housing (1), wherein a slide (2) is fixedly connected to the interior of the housing (1), the slide (2) comprising a base (201) and a cover (202), the cover (202) being fixedly arranged inside the base (201), and characterized in that: A storage bin (3) for storing the unpolished rice sample to be tested is fixedly connected above the slide (2), a discharge port at the lower end of the storage bin (3) is communicated with the inner cavity of the slide (2), a slide plate (5) is slidably connected to the interior of the slide (2) via a first motor (4), a sample laying groove (501) is provided on the side wall of the slide plate (5) for receiving the unpolished rice sample to be tested in the storage bin (3), an upper bracket (6) and a lower bracket (7) are fixedly connected to the upper and lower sides of the slide (2), respectively, the upper bracket (6) and the lower bracket (7) are fixedly connected to the upper and lower sides of the slide (2), and the upper bracket (6) is connected to the inner cavity of the slide (2). ) and the lower bracket (7) are respectively fixedly mounted with a light emitting module (8) and a light receiving element (9); a pressing plate (11) for pressing the brown rice sample inside the sample laying groove (501) is slidably connected to the upper bracket (6) via a spring (10); a first glass (12) is fixedly connected to the side of the pressing plate (11) in contact with the brown rice sample; a second glass (13) is fixedly connected just above the light receiving element (9) and on the side wall of the slide (2); and the lower end edges of both sides of the pressing plate (11) are chamfered.

2. the near-infrared digital instrument for detecting brown rice taste according to claim 1, is characterized in that: A discharge pipe (14) is fixedly connected to the second glass (13) on a side away from the storage bin (3) and located below the slide (2). The upper end of the discharge pipe (14) is communicated with the slide (2), and the lower end of the discharge pipe (14) passes through the side wall of the housing (1) and extends to the outside.

3. the near-infrared digital instrument for detecting brown rice taste according to claim 1, is characterized in that: The housing (1) is fixedly connected to a discharge bin (15), and a lower outlet of the discharge bin (15) is fixedly connected to a delivery pipe (16). One end of the delivery pipe (16) is communicated with the storage bin (3). The interior of the delivery pipe (16) is connected to an auger blade (18) which is rotated by a second motor (17). The outer cover of the delivery pipe (16) is provided with a debris discharge pipe (19). The side wall of the delivery pipe (16) located inside the debris discharge pipe (19) is provided with a sieve hole. The lower end of the debris discharge pipe (19) passes through the side wall of the housing (1) and extends to the outside.

4. the near-infrared digital instrument for detecting brown rice taste according to claim 3, is characterized in that: A controller (20) is fixedly mounted on the upper side of the housing (1), and the controller (20) is electrically connected to the first motor (4), the second motor (17), the light emitting module (8), and the light receiving element (9).

5. the near-infrared digital instrument for detecting brown rice taste according to claim 3, is characterized in that: A fan (21) is installed on the upper portion of the impurity discharge pipe (19), and an air outlet of the fan (21) is located in the impurity discharge pipe (19) and above the sieve hole.

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