A method and device for detecting rice and rice flour

Abstract

This invention relates to: a rice detection method, which simultaneously detects grain width and grain length and calculates the length-to-width ratio of the rice grain; visually inspects the chalky grain rate; and detects the gelatinization time; a rice flour detection method, which processes rice grains from a batch containing qualified rice grains into rice flour and then checks the consistency of the rice flour; and a rice detection device, comprising a panel with a grain width fixing baffle, a grain length fixing baffle, and ten cross-shaped baffles distributed along a diagonal line. The cross-shaped baffle closest to the grain width fixing baffle, the grain width fixing baffle, and the grain length fixing baffle form a first rice grain storage cell, and two adjacent cross-shaped baffles form a second rice grain storage cell. This invention has the advantages of simultaneously detecting grain length and width, avoiding waste of detection resources, and high gelatinization detection accuracy, solving the problems of low detection efficiency and wasted detection resources in existing rice detection and rice flour detection methods.

Description

Technical Field

[0001] This invention relates to food cooking and processing supplies, and more particularly to a method and apparatus for detecting rice and rice flour. Background Technology

[0002] In the testing of rice and rice flour in food, it is necessary to test the grain width, grain length, length-to-width ratio, chalky grain rate, and gelatinization time of rice, and the gel consistency of rice flour, to determine whether the rice and rice flour meet the requirements. Current methods for testing rice grain width and length separately result in low testing efficiency and poor accuracy in determining gelatinization time. Testing rice flour separately from rice can lead to situations where rice that does not meet the requirements is tested in the rice flour, wasting testing resources, as further testing of rice flour is unnecessary if the rice does not meet the requirements. Summary of the Invention

[0003] This invention aims to provide a high-precision method for rice detection, rice flour detection, and rice detection device that can simultaneously detect grain length and width, avoiding waste of detection resources. It solves the problems of low detection efficiency and wasted detection resources in existing rice flour detection methods.

[0004] The above technical problems are solved by the following technical solution: A method for detecting rice, comprising the following steps: First, simultaneously detecting the grain width and grain length and calculating the length-to-width ratio of the rice grains; Second, visually inspecting the chalky grain rate; Third, detecting the gelatinization time: Add 275 ml of distilled water to a 1-liter beaker, then place the beaker on a heat source and heat until the water boils vigorously. Add a number of rice grains to the beaker and start timing immediately with a stopwatch. Stir with a glass rod to prevent the rice grains from adhering to the bottom of the beaker. At the same time, place a strainer into the water in the beaker. After 7 minutes, detect the gelatinization state. The gelatinization state detection process is as follows: use the strainer to scoop out at least 10 grains of rice. Rice grains are evenly scattered on a glass slide, and another glass slide is placed on top. A finger is used to press the two slides together, and the flattened rice grains are examined. The number of fully gelatinized rice grains is recorded. This gelatinization test is repeated every minute from the 8th minute onwards until all rice grains collected in two consecutive tests have reached a gelatinized state. The gelatinization time is the time elapsed between the first detection of gelatinized rice grains and the moment the rice grains were collected. Simultaneous detection of grain length and width improves detection efficiency and allows for accurate determination of the rice grain gelatinization time.

[0005] Preferably, after scooping out the rice grains, the strainer is placed in the boiling water in the beaker. This improves the accuracy of detecting the gelatinization time.

[0006] Preferably, the beaker also contains glass beads. This helps prevent the rice grains from sticking together during cooking.

[0007] A method for detecting rice flour, characterized in that rice grains from a batch that meet the requirements for grain width, grain length, length-to-width ratio, chalky grain rate, and gelatinization time as determined by rice testing methods are processed into rice flour. The consistency of the rice flour is then checked. The specific process for detecting the consistency of glutinous rice flour is as follows: First, three portions of the rice flour with a moisture content of 12% are weighed and placed into three test tubes. The inner diameter of the vertical tube is 15 mm, and the length is 180 mm. Second, 0.2 ml of a 95% thymol blue-ethanol solution and 2 ml of a 0.2 mol / L KOH solution are added to each test tube to prepare a starch mixture. Fourth, the three test tubes are placed in boiling water, with the openings of the test tubes sealed with film to prevent steam from escaping during heating. The level of the starch mixture is lower than the level of the boiling water. The mixture is heated for 8 hours. The rice glue is prepared by heating for 2 minutes, maintaining the boiling height of the rice glue at 2 / 3 of the test tube length. The fifth step involves removing the test tube and placing it on a test tube rack to cool for 5 minutes, then immersing it in ice water for 20 minutes. Finally, the test tube is placed horizontally on a level surface at 25°C and left to stand for 1 hour. The sixth step involves measuring the length of the rice glue in each test tube, from the bottom to the leading edge. The average length of the rice glue in the three test tubes is the consistency of the rice flour. Only when the rice grains are qualified is the consistency of the rice flour in that batch tested, avoiding testing of unqualified rice flour and reducing testing costs. This method provides accurate structural testing.

[0008] Preferably, the sealing film is a membrane with tensile elasticity. This prevents the air vent membrane from breaking and leaking air during the boiling process.

[0009] A rice detection device includes a panel with a rice grain width fixing baffle, a rice grain length fixing baffle, and ten cross-shaped baffles. The rice grain width fixing baffles are perpendicular to the rice grain length fixing baffles. The cross-shaped baffles are distributed along a diagonal line, and each cross-shaped baffle includes a cross-shaped movable rice grain width baffle and a movable rice grain length baffle. The panel has a plurality of transverse guide grooves extending along the extension direction of the rice grain width fixing baffles. Each movable rice grain length baffle has a guide slider for the movable rice grain length baffle, and the guide slider for the movable rice grain length baffle is slidably connected within the transverse guide grooves. The panel also has a plurality of guide grooves extending along the rice grain length fixing baffles. The system includes several longitudinally extending guide grooves. The grain width moving baffle is equipped with a grain width moving baffle guide slider, which is slidably connected within the longitudinal guide grooves. The grain width moving baffle is parallel to the grain width fixed baffle, and the grain length moving baffle is parallel to the grain length fixed baffle. The cross-shaped baffle closest to the grain width fixed baffle, the grain width fixed baffle, and the grain length fixed baffle together form a first grain storage cell. A second grain storage cell is formed between two adjacent cross-shaped baffles. In use, one grain of rice is placed horizontally in the first grain storage cell, with its length direction aligned with the extending direction of the grain length fixed baffle. In each of the second rice grain storage compartments, one rice grain is placed horizontally with its length direction aligned with the extension direction of the rice grain length fixing baffle. The rice grain width and length moving baffles of each cross-shaped baffle are moved until: the two ends of the rice grain in the length direction of the first rice grain storage compartment are in contact with the rice grain length fixing baffle and the rice grain length moving baffle of the cross-shaped baffle closest to the rice grain length fixing baffle; the two ends of the rice grain in the width direction of the first rice grain storage compartment are in contact with the rice grain width fixing baffle and the rice grain width moving baffle of the cross-shaped baffle closest to the rice grain width fixing baffle; and the two ends of the rice grain in the length direction of the second rice grain storage compartment are in contact with the adjacent cross-shaped baffle. The rice grain length baffles of the first rack are in contact with each other, and the two ends of the width direction of the rice grains in the second rice grain storage compartment are in contact with the width direction baffles of the adjacent cross rack. The upper surface of the panel is horizontal, and the two sides of the rice grain length baffle, the rice grain length baffle, the rice grain width baffle, and the rice grain width baffle are all vertical planes. Measure the distance W1 between the rice grain width baffle of the cross rack farthest from the rice grain width baffle and the rice grain width baffle, and measure the distance L1 between the rice grain length baffle of the cross rack farthest from the rice grain length baffle and the rice grain length baffle. The grain width W = (W1 - ... The length of the rice grain is L = (L1 - L2) / 10, where W2 is the sum of the thicknesses of the rice grain width-fixing baffles in the nine cross-shaped baffles (excluding the one furthest from the grain width-fixing baffle), and L2 is the sum of the thicknesses of the rice grain length-fixing baffles in the nine cross-shaped baffles (excluding the one furthest from the grain length-fixing baffle). The length-to-width ratio of the rice grain is L / W. This invention provides a device for simultaneously detecting the length and width of rice grains.This makes synchronous detection a practical industrial application, moving beyond theoretical concepts. It offers high detection efficiency, convenience, and good data accuracy. However, if rice grains are placed close together, their non-uniform shape and size can cause overlap, leading to inaccurate detection data. Visually assessing alignment results in significant errors.

[0010] Preferably, the panel is equipped with a vertical scale and a horizontal scale. A first indicator needle is located on the grain length measuring plate of the cross-shaped bracket furthest from the grain length measuring plate, and a second indicator needle is located on the grain width measuring plate. The first indicator needle points to a graduation on the horizontal scale, and the graduation on the horizontal scale aligned with the first indicator needle represents the grain length. The second indicator needle points to a graduation on the vertical scale, and the graduation on the vertical scale aligned with the second indicator needle represents the grain width. This allows for direct acquisition of detection data.

[0011] The rice grain detection device also includes a first air chamber and a second air chamber. The first air chamber has ten longitudinally extending cylinders at one longitudinal end, arranged in a stepped pattern. The second air chamber has ten laterally extending cylinders at one transverse end, also arranged in a stepped pattern. A cross-shaped baffle is located between the end of the first air chamber with the longitudinal cylinders and the end of the second air chamber with the transverse cylinders. A longitudinal cylinder piston is slidably and sealingly connected to each longitudinal cylinder. The longitudinal cylinder piston is connected to a longitudinal piston rod, and the longitudinal cylinder piston isolates a longitudinal cylinder sealing cavity within the longitudinal cylinder. The ten longitudinal piston rods of the ten longitudinal cylinders correspond one-to-one with the ten cross-shaped baffles. Ten rice grain-width moving baffles are connected together. A longitudinal piston contraction spring is installed in the sealed cavity of the longitudinal cylinder section, driving the longitudinal cylinder piston towards the first air chamber, thus causing the longitudinal piston rod to contract. A transverse cylinder piston is slidably and sealingly connected to the transverse cylinder section, and the transverse cylinder piston is connected to a transverse piston rod. The transverse cylinder piston isolates a transverse cylinder section sealed cavity within the transverse cylinder section. The ten transverse piston rods of the ten transverse cylinders are connected one-to-one with the ten rice grain-width moving baffles of the ten cross-shaped baffles. A transverse piston contraction spring is installed in the sealed cavity of the transverse cylinder section, driving the transverse cylinder piston towards the second air chamber, thus causing the transverse piston rod to contract. During rice grain clamping detection, air is injected into the first and second air chambers, causing the longitudinal and transverse piston rods to output air to each rice grain, clamping it. When the rice grain is removed after detection, the first and second air chambers are opened, and the piston rod contracts under the action of the spring, thereby losing its clamping effect on the rice grain. This method of clamping rice grains is convenient, fast, and reliable.

[0012] Preferably, the panel is provided with an upward-facing light source plate, and both the first and second rice grain storage cells are located above the light source plate. This allows for easy observation of whether the rice grains are in contact with the baffle.

[0013] Preferably, the rice grain length moving baffle, rice grain width moving baffle, rice grain length fixed baffle, and rice grain width fixed baffle are all provided with mirror layers on one side of the first and second rice grain storage cells. By providing mirror layers, it is possible to observe whether the rice grains are in contact with the baffles by looking into the mirrors. Looking into the mirrors doubles the gap between the rice grains and the baffles, thereby improving the accuracy of determining whether the rice grains are in contact with the baffles. The invention has the following advantages: grain length and width can be detected simultaneously, resulting in high detection efficiency; and the gelatinization time can be accurately determined. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of a rice testing device;

[0015] Figure 2 for Figure 1 A magnified view of a portion of point A;

[0016] Figure 3 for Figure 1 A magnified view of a portion of point B;

[0017] Figure 4 for Figure 2 C-C sectional view. In the diagram: Panel 31, Rice grain width fixed baffle 1, Rice grain length fixed baffle 2, Cross baffle 3, Light source plate 4, Rice grain width movable baffle 5, Rice grain length movable baffle 6, Clearance notch 7, Transverse guide groove 8, Rice grain length movable baffle guide slider 9, Longitudinal guide groove 10, Rice grain width movable baffle guide slider 11, First rice grain storage cell 12, Second rice grain storage cell 13, Longitudinal scale 14, Transverse scale 15, First indicator needle 16, Second indicator needle 17, First... Air chamber 18, second air chamber 19, longitudinal cylinder 20, transverse cylinder 21, longitudinal cylinder piston 22, longitudinal piston rod 23, longitudinal cylinder sealing cavity 24, longitudinal piston contraction spring 25, transverse cylinder piston 26, transverse piston rod 27, transverse cylinder sealing cavity 28, transverse piston contraction spring 29, rice grain 30, rice grain length fixing plate of the cross-shaped baffle farthest from the rice grain length fixing plate 32, rice grain width fixing plate of the cross-shaped baffle farthest from the rice grain length fixing plate 33. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] See Figures 1 to 4 A method for detecting rice: First, simultaneously detect the grain width and length, and calculate the length-to-width ratio. Second, visually inspect the chalky grain rate. Third, detect the gelatinization time: Add 275 ml of distilled water to a 1-liter beaker, then place the beaker on a heat source and heat until the water boils vigorously. Add a number of rice grains to the beaker and start timing immediately with a stopwatch. Stir with a glass rod to prevent the rice grains from sticking to the bottom of the beaker. At the same time, place a strainer into the water in the beaker. After 7 minutes, detect the gelatinization state. The gelatinization state detection process involves using the strainer to remove at least 10 grains. Rice grains are evenly scattered on a glass slide, and another glass slide is placed on top. A finger is used to press the two glass slides together, and the flattened rice grains are checked. The number of completely gelatinized rice grains is recorded. The gelatinization check is repeated every minute from the 8th minute onwards until all rice grains collected in two consecutive tests have reached a gelatinized state. The gelatinization time is defined as the time elapsed between the first detection of gelatinized rice grains and the moment the rice grains were collected and added to the beaker. After scooping out the rice grains with a strainer, the strainer is placed in boiling water in the beaker. Glass beads are also placed in the beaker.

[0020] The first step is accomplished, but is not limited to, using the following rice grain detection device.

[0021] The rice detection device includes a panel 31, on which are arranged a grain width fixing baffle 1, a grain length fixing baffle 2, and 10 cross-shaped baffles 3. The grain width fixing baffles are perpendicular to the grain length fixing baffles, and the grain width fixing baffles and grain length fixing baffles are perpendicularly connected to each other to form a right-angle structure. The panel has an upward-facing light source plate 4. The light source plate is an obliquely arranged elongated strip. The cross-shaped baffles are distributed along a diagonal line, and the distribution direction of the cross-shaped baffles is the same as the extension direction of the light source plate. The cross-shaped baffles include cross-shaped movable grain width baffles 5 and movable grain length baffles 6. The movable grain length baffles have clearance notches 7 for the movable grain width baffles to move, so as to prevent interference between the two and prevent them from moving. The panel has several transverse guide grooves 8 extending along the direction of the fixed-width baffle for rice grains. The moving baffle for rice grain length has guide sliders 9, which are slidably connected within the transverse guide grooves, ensuring that the longitudinal speeds of the moving baffle for rice grain length are equal when it moves. The panel also has several longitudinal guide grooves 10 extending along the direction of the fixed-length baffle for rice grains. The moving baffle for rice grain width has guide sliders 11, which are slidably connected within the longitudinal guide grooves, ensuring that the transverse speeds of the moving baffle for rice grain width are equal when it moves. All moving baffles for rice grain width are parallel to the fixed-width baffle for rice grains, and all moving baffles for rice grain length are parallel to the fixed-length baffle for rice grains. The first rice storage cell 12 is formed by the cross-shaped baffle closest to the grain width baffle, the grain width baffle, and the grain length baffle. A second rice storage cell 13 is formed between two adjacent cross-shaped baffles. Both the first and second rice storage cells are located above the light source plate. Mirror layers are provided on one side of each of the grain length moving baffle, grain width moving baffle, grain length fixed baffle, and grain width fixed baffle, located in the first and second rice storage cells. The panel is provided with a vertical scale 14 and a horizontal scale 15. A first indicator needle 16 is provided on the grain length fixed baffle 32 of the cross-shaped baffle furthest from the grain length fixed baffle, and a second indicator needle 17 is provided on the grain width fixed baffle 33 of the cross-shaped baffle furthest from the grain length fixed baffle. The panel also includes a first air chamber 18 and a second air chamber 19. The first air chamber has ten longitudinally extending cylinders 20 at one longitudinal end, which are arranged in a stepped manner. The second air chamber has ten transversely extending cylinders 21 at one transverse end, which are also arranged in a stepped manner. The cross baffle is located between the end of the first air chamber with the longitudinal cylinders and the end of the second air chamber with the transverse cylinders. That is, the first air chamber and the second air chamber are located on both sides of the width direction of the light source board.A longitudinal cylinder piston 22 is slidably and sealed within the longitudinal cylinder body. A longitudinal piston rod 23 is connected to the longitudinal cylinder piston. A longitudinal cylinder sealing cavity 24 is isolated within the longitudinal cylinder body from the longitudinal cylinder piston. Ten longitudinal piston rods from the ten longitudinal cylinder bodies are connected one-to-one with ten moving baffles of the ten cross-bracing frames. A longitudinal piston contraction spring 25 is provided within the longitudinal cylinder sealing cavity to drive the longitudinal cylinder piston towards the first air chamber, causing the longitudinal piston rod to contract. A transverse cylinder piston 26 is slidably and sealed within the transverse cylinder body. A transverse piston rod 27 is connected to the transverse cylinder piston. A transverse cylinder sealing cavity 28 is isolated within the transverse cylinder body from the transverse cylinder body. Ten transverse piston rods from the ten transverse cylinder bodies are connected one-to-one with ten moving baffles of the ten cross-bracing frames. A transverse piston contraction spring 29 is provided within the transverse cylinder sealing cavity to drive the transverse cylinder piston towards the second air chamber, causing the transverse piston rod to contract.

[0022] The process of detecting the length and leaving the rice grains using the above rice grain detection device is as follows: One rice grain 30 is placed horizontally in the first rice grain storage cell, with its length direction aligned with the extension direction of the rice grain length fixing baffle. One rice grain is also placed horizontally in each of the second rice grain storage cells, with its length direction aligned with the extension direction of the rice grain length fixing baffle. The rice grain width moving baffle and rice grain length moving baffle of each cross-shaped baffle are moved until the two ends of the length direction of the rice grain in the first rice grain storage cell are aligned with the rice grain length fixing baffle and... The rice grain length moving baffle of the cross-shaped baffle closest to the rice grain length fixed baffle is in contact with the grain width moving baffle in the first rice grain storage cell. The two ends of the rice grain in the width direction in the second rice grain storage cell are in contact with the rice grain width fixed baffle and the rice grain width moving baffle of the cross-shaped baffle closest to the rice grain width fixed baffle. The two ends of the rice grain in the length direction in the second rice grain storage cell are in contact with the rice grain length moving baffle of the adjacent cross-shaped baffle. The two ends of the rice grain in the width direction in the second rice grain storage cell are in contact with the rice grain width moving baffle of the adjacent cross-shaped baffle. The specific method for moving the rice grain length and width moving baffles is to inflate the first and second air chambers, thereby driving the longitudinal and transverse pistons to extend. The method for observing whether the rice grains are in contact with the rice grain length moving baffle (i.e., the rice grain width moving baffle) is to observe whether the rice grain image in the mirror layer is in contact with the rice grains. Measure the distance W1 between the moving baffle of the rice grain width and the fixed baffle of the rice grain width at the cross-shaped baffle furthest from the fixed baffle of the rice grain width, and the distance L1 between the moving baffle of the rice grain length and the fixed baffle of the rice grain length at the cross-shaped baffle furthest from the fixed baffle of the rice grain length. The width of the rice grain is W = (W1 - W2) / 10, and the length of the rice grain is L = (L1 - L2) / 10. W2 is the sum of the thicknesses of the fixed baffles of the rice grain width in the nine cross-shaped baffles excluding the one furthest from the fixed baffle of the rice grain width, and L2 is the sum of the thicknesses of the fixed baffles of the rice grain length in the nine cross-shaped baffles excluding the one furthest from the fixed baffle of the rice grain length. The length-to-width ratio of the rice grain is L / W. In this embodiment, the first indicator needle points to the scale on the horizontal scale, and the scale on the horizontal scale aligned with the first indicator needle is the length of the rice grain. The second indicator needle points to the scale on the vertical scale, and the scale on the vertical scale aligned with the second indicator needle is the width of the rice grain.A method for detecting rice flour involves processing rice grains from a batch that meet the requirements for grain width, grain length, length-to-width ratio, chalky grain rate, and gelatinization time as determined by the above-mentioned rice detection methods into rice flour. The method then checks the consistency of the rice flour gel. The specific process for detecting the consistency of glutinous rice flour gel is as follows: First, weigh three portions of the rice flour with a moisture content of 12% and place them into three test tubes. The inner diameter of the vertical tube is 15 mm, and the length is 180 mm. Second, add 0.2 ml of a 95% thymol blue-ethanol solution and 2 ml of a 0.2 mol / L KOH solution to each test tube to prepare a starch mixture. Fourth, place the three test tubes into boiling water, sealing the openings of the test tubes with sealing film to prevent steam escape during heating. The level of the starch mixture should be lower than the level of the boiling water. Heat for 8 hours. The rice glue is prepared by heating for 2 minutes, maintaining the boiling height of the rice glue at 2 / 3 of the test tube length throughout the heating process. Fifth step: Remove the test tube and place it on a test tube rack to cool for 5 minutes, then immerse it in ice water for 20 minutes. Place the test tube flat on a horizontal board at 25℃ and let it stand for 1 hour. Sixth step: Measure the length of the rice glue in each test tube, from the bottom to the leading edge. The average length of the rice glue in the three test tubes is the consistency of the rice flour. The sealing film is a tensile elastic film to prevent air leakage due to breakage of the vent film during cooking.

Claims

1. A rice detection device, characterized in that, The panel includes a grain width fixing baffle, a grain length fixing baffle, and ten cross-shaped baffles. The grain width fixing baffles are perpendicular to the grain length fixing baffles. The cross-shaped baffles are distributed along a diagonal line, and each cross-shaped baffle includes a grain width moving baffle and a grain length moving baffle arranged in a cross shape. The panel has several transverse guide grooves extending along the grain width fixing baffles. Each grain length moving baffle has a grain length moving baffle portion guide slider, which is slidably connected within the transverse guide grooves. The panel also has several cross-shaped guide grooves extending along the grain length fixing baffles. The longitudinal guide groove includes a rice grain width moving baffle with a rice grain width moving baffle guide slider, which is slidably connected within the longitudinal guide groove. The rice grain width moving baffle is parallel to the rice grain width fixed baffle, and the rice grain length moving baffle is parallel to the rice grain length fixed baffle. The cross baffle closest to the rice grain width fixed baffle, the rice grain width fixed baffle, and the rice grain length fixed baffle form a first rice grain storage cell. A second rice grain storage cell is formed between two adjacent cross baffles. The upper surface of the panel is horizontal. The rice grain length fixed baffle, the rice grain length moving baffle, the rice grain width fixed baffle, and the rice grain width moving baffle are located on both sides in the rearward direction. All surfaces are vertical planes. In use, one rice grain is placed horizontally in the first rice grain storage compartment, with its length direction aligned with the extension direction of the rice grain length fixing baffle. Similarly, one rice grain is placed horizontally in each of the second rice grain storage compartments, with its length direction aligned with the extension direction of the rice grain length fixing baffle. The rice grain width and length moving baffles of each cross-shaped baffle are moved until: the two ends of the rice grain in the length direction of the first rice grain storage compartment are in contact with the rice grain length fixing baffle and the rice grain length moving baffle of the cross-shaped baffle closest to the rice grain length fixing baffle; and the two ends of the rice grain in the width direction of the first rice grain storage compartment are in contact with the rice grain width fixing baffle and the rice grain length moving baffle of the cross-shaped baffle closest to the rice grain length fixing baffle. The rice grain width moving baffles of the cross-shaped baffle closest to the grain width fixing baffle are in contact with each other; the two ends of the length direction of the rice grains in the second rice grain storage cell are in contact with the rice grain length moving baffles of the adjacent cross-shaped baffles; the two ends of the width direction of the rice grains in the second rice grain storage cell are in contact with the rice grain width moving baffles of the adjacent cross-shaped baffles; measure the distance W1 between the rice grain width moving baffle of the cross-shaped baffle farthest from the grain width fixing baffle and the grain width fixing baffle; measure the distance L1 between the rice grain length moving baffle of the cross-shaped baffle farthest from the grain length fixing baffle and the grain length fixing baffle; the grain width W = (W1 - ... W2) / 10, the length of the rice grain L=(L1-L2) / 10, W2 is the sum of the thicknesses of the moving baffles of the rice grain width in the nine cross-shaped baffles other than the one farthest from the fixed baffle of the rice grain width, L2 is the sum of the thicknesses of the moving baffles of the rice grain length in the nine cross-shaped baffles other than the one farthest from the fixed baffle of the rice grain length, and the length-to-width ratio of the rice grain is L / W.

2. The rice detection device according to claim 1, characterized in that... The panel is equipped with a vertical scale and a horizontal scale. The grain length measuring plate of the cross-shaped bracket farthest from the grain length measuring plate is equipped with a first indicator needle, and the grain width measuring plate is equipped with a second indicator needle. The first indicator needle points to the scale on the horizontal scale, and the scale on the horizontal scale aligned with the first indicator needle is the grain length of the rice. The second indicator needle points to the scale on the vertical scale, and the scale on the vertical scale aligned with the second indicator needle is the grain width of the rice.

3. The rice detection device according to claim 1 or 2, characterized in that, It also includes a first air chamber and a second air chamber. The first air chamber has ten longitudinally extending cylinders at one longitudinal end, arranged in a stepped manner. The second air chamber has ten laterally extending cylinders at one transverse end, also arranged in a stepped manner. A cross-shaped baffle is located between the end of the first air chamber with the longitudinal cylinders and the end of the second air chamber with the transverse cylinders. A longitudinal cylinder piston is slidably and sealingly connected within each longitudinal cylinder. The longitudinal cylinder piston is connected to a longitudinal piston rod, and the longitudinal cylinder piston isolates a longitudinal cylinder sealing cavity within the longitudinal cylinder. The ten longitudinal piston rods of the ten longitudinal cylinders correspond one-to-one with the ten cross-shaped baffles. The grain-wide moving baffles are connected together. The longitudinal cylinder section sealing cavity is provided with a longitudinal piston contraction spring that drives the longitudinal cylinder section piston to move toward the first air chamber, causing the longitudinal piston rod to contract. The transverse cylinder section piston is slidably and sealingly connected to the transverse cylinder section piston, which is connected to the transverse piston rod. The transverse cylinder section piston isolates the transverse cylinder section sealing cavity in the transverse cylinder section. The ten transverse piston rods of the ten transverse cylinders are connected one-to-one with the ten grain-long moving baffles of the ten cross baffles. The transverse cylinder section sealing cavity is provided with a transverse piston contraction spring that drives the transverse cylinder section piston to move toward the second air chamber, causing the transverse piston rod to contract.

4. The detection device according to claim 1 or 2, characterized in that, The panel is equipped with an upward-facing light source plate, and the first and second rice grain storage cells are both located above the light source plate.

5. The detection device according to claim 4, characterized in that, The rice grain length moving baffle, rice grain width moving baffle, rice grain length fixed baffle, and rice grain width fixed baffle are all provided with mirror layers on one side of the first rice grain storage cell and the second rice grain storage cell.

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