A method for detecting the width of rice grains

Abstract

This invention relates to a method for detecting the width of rice grains. The method utilizes a rice grain width detection device, which includes a panel with a fixed width baffle, a fixed length baffle, and ten movable width baffles. The movable width baffles are parallel to the fixed width baffle and distributed along the extension direction of the fixed length baffles. A movable width baffle state-maintaining mechanism is provided between the movable width baffles and the panel. The movable width baffle closest to the fixed width baffle, the fixed length baffle, and the fixed width baffle together form a first rice grain storage blind slot. Two adjacent movable width baffles and fixed length baffles form a second rice grain storage blind slot. This invention has the advantage of accurately detecting the width of rice grains, solving the problem of low detection accuracy caused by manually aligning rice grains side-by-side by hand for visual estimation.

Description

Technical Field

[0001] This invention relates to the field of food testing technology, and in particular to a method for detecting the width of rice grains. Background Technology

[0002] In the testing of rice and rice flour in food products, the grain width of rice needs to be measured. The existing method for measuring grain width involves arranging ten rice grains side-by-side, with their widest points touching, on a panel. The length of the arranged grains is then measured, and the length divided by ten gives the grain width. Whether the grains touch at their widest points is estimated visually. However, because rice grains have a flattened, olive-like structure, visually judging the widest point introduces angular measurement errors, leading to poor accuracy in grain width measurement. Furthermore, even if the widest point is accurately determined, it's difficult to guarantee that they touch precisely (because differences in grain thickness can cause vertical misalignment, resulting in overlapping widths that are difficult to judge visually). Inaccurate width measurement is also challenging. Summary of the Invention

[0003] The present invention aims to provide a method for accurately detecting the width of rice grains, which solves the problem of low detection accuracy caused by the existing method of visually judging the width of rice grains by manually placing them side by side.

[0004] The above technical problems are solved by the following technical solution: a method for detecting the width of rice grains, characterized in that the detection is performed by a rice grain width detection device, the rice grain width detection device including a panel, the upper surface of which is a horizontal plane, the panel being provided with a rice grain width fixing baffle, a rice grain length fixing strip, and ten rice grain width moving baffles, the moving baffles being parallel to the rice grain width fixing baffle, and the moving baffles being distributed along the extension direction of the rice grain length fixing strip. Both surfaces of the wide-moving baffle along the extension direction of the grain length fixing bar are vertical planes. The surface of the grain width fixing baffle facing the grain width moving baffle is also a vertical plane. A grain width moving baffle state holding mechanism is provided between the grain width moving baffle and the panel to keep the grain width moving baffle parallel to the grain width fixing baffle and to keep the grain width moving baffle perpendicular to the upper surface of the panel. The grain width moving baffle, grain length fixing bar, and grain width fixing baffle are closest to the grain width fixing baffle. The first rice grain storage blind slot is formed by two adjacent rice grain width moving baffles and rice grain length fixing bars. The process of rice grain width detection is as follows: one rice grain is placed horizontally in the first rice grain storage blind slot with its length direction perpendicular to the extension direction of the rice grain length fixing bars. One rice grain is also placed horizontally in each of the second rice grain storage blind slots with its length direction perpendicular to the extension direction of the rice grain length fixing bars. The ten rice grain width moving baffles are then moved to... In the first rice grain storage blind trough, one end of the rice grain in the width direction abuts against the fixed-width baffle, and the other end abuts against the nearest movable-width baffle. In the second rice grain storage blind trough, both ends of the rice grain in the width direction abut against the two adjacent movable-width baffles. The distance W1 between the movable-width baffle farthest from the fixed-width baffle and the fixed-width baffle is measured. The grain width W = (W1 - W2) / 10, where W2 is the sum of the thicknesses of the nine movable-width baffles (excluding the one farthest from the fixed-width baffle). By pushing the rice grain along the width direction until it abuts against the baffle, it indirectly determines whether adjacent rice grains are side-by-side at their widest point. This method has good accuracy, and the grain thickness does not affect the measurement. This scheme improves the accuracy of rice grain width measurement.

[0005] This invention also includes a longitudinal scale. An indicator needle is located on the movable grain width baffle furthest from the fixed grain width baffle. The indicator needle points to a graduation on the longitudinal scale, and the graduation on the longitudinal scale aligned with the indicator needle represents the grain width of the rice. By implementing a pre-calculated scale marking process, the grain width (i.e., the width of the rice grain) can be directly determined, improving the convenience of measurement.

[0006] Preferably, the scale is positioned on the upper surface of the grain length measuring bar. This design results in a compact structure and convenient reading.

[0007] Preferably, the rice grain width moving baffle state holding mechanism includes two longitudinal guide grooves on the panel, two lower guide sliders slidably connected to the two longitudinal guide grooves on the lower side of the rice grain width moving baffle, a longitudinally extending anti-rotation step on the upper surface of the rice grain length fixed baffle, and an anti-rotation piece slidably overlapping the anti-rotation step on the end face of the rice grain length fixed baffle. The step surface of the anti-rotation step is parallel to the upper surface of the panel, and the extension direction of the longitudinal guide groove is parallel to the rice grain length fixed baffle. All rice grain width moving baffle state holding mechanisms share the anti-rotation step and the longitudinal guide grooves. During the movement of the rice grain width moving baffle, the displacement of the rice grain width moving baffle at both ends along the length of the rice grain and the displacement of the upper and lower ends are equal.

[0008] Preferably, the longitudinal guide groove runs through the panel in the vertical direction, which improves the smoothness of movement.

[0009] Preferably, a gap is provided between the grain width moving baffle and the panel. This prevents damage to the surface light source when the grain length fixed baffle is moved.

[0010] Preferably, the panel is provided with an upward-facing light source plate, and both the first and second rice grain storage blind slots are located above the light source plate. This allows for easy observation of whether the rice grains are in contact with the baffle.

[0011] Preferably, the surfaces of the rice grain width-fixing baffle located on one side of the first rice grain storage blind slot, the rice grain width-moving baffle located on one side of the first rice grain storage blind slot, and the rice grain width-moving baffle located on one side of the second rice grain storage blind slot are all provided with mirror layers that come into contact with the rice grains during detection. When determining whether a rice grain is in contact with the rice grain width-moving baffle and the rice grain length-fixing baffle, the judgment is made by observing whether the image of the rice grain in the mirror layer is in contact with the rice grain. If the image of the rice grain in the mirror layer of the rice grain width-fixing baffle in the first rice grain storage blind slot is in contact with the rice grain, then the rice grain is in contact with the rice grain width-fixing baffle. Similarly, if the image of the rice grain in the mirror layer of the rice grain width-moving baffle in the second rice grain storage blind slot is in contact with the rice grain width-moving baffle, then the rice grain is in contact with the rice grain width-moving baffle. Observing into the mirrors can double the gap between the rice grain and the baffle, thereby improving the accuracy of determining whether the rice grain and the baffle are touching.

[0012] Preferably, the rice grain length fixing strip is connected to the rice grain width fixing plate.

[0013] This invention also includes a rice grain anti-rotation mechanism, which comprises a longitudinal rotating shaft rotatably connected to the side of the panel, a drive motor for driving the longitudinal rotating shaft, and ten pressing plates with flat lower surfaces. A rice grain width-fixing baffle is located between the rice grain length-fixing baffle and the side of the panel where the longitudinal rotating shaft is located. The side of the panel where the longitudinal rotating shaft is located is flat. The ten pressing plates are respectively located above the first rice grain storage blind slot and above nine second rice grain storage blind slots. The longitudinal rotating shaft is provided with ten connecting seats with sliding holes. The pressing plates are provided with connecting posts, and the connecting posts on the ten pressing plates are correspondingly inserted into the sliding holes. The sliding holes are provided with drive connecting posts facing... A spring that moves within a sliding hole; when the lower surface of the pressing plate is parallel to the upper surface of the panel, the first end face of the connecting seat abuts against the side of the panel where the longitudinal rotating shaft is located, preventing the pressing plate from rotating towards the panel; the first end face of the connecting seat is the end face of the connecting seat facing the panel when the lower surface of the pressing plate is parallel to the upper surface of the panel; when the lower surface of the pressing plate is in a vertical state, the end face of the connecting seat away from the pressing plate abuts against the side of the panel where the longitudinal rotating shaft is located, preventing the pressing plate from rotating away from the panel; the first end face of the connecting seat and the side of the panel where the longitudinal rotating shaft is located are connected by an arc surface transition, and the cylinder where the arc surface is located is coaxial with the longitudinal rotating shaft. In use, first position the pressing plate vertically, then load ten grains of rice into the ten rice grain storage blind slots. Next, rotate the lower surface of the pressing plate to a horizontal position. Under the action of the spring, the pressing handle moves downward, causing the ten pressing plates to press down on the ten grains of rice one by one. This avoids the rice grains rolling during the process of pushing the grain width through the grain width moving baffle, which would otherwise reduce the accuracy of the grain width measurement. The invention has the following beneficial effects: the detected grain width is highly accurate. 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 1B-B sectional view. In the diagram: Panel 1, Rice grain width fixing baffle 2, Rice grain length fixing baffle 3, Rice grain width moving baffle 4, Indicator needle 5, Longitudinal scale 6, Light source plate 7, Longitudinal guide groove 8, Lower guide slider 9, Anti-rotation step 10, Anti-rotation piece 11, Gap 12, First rice grain storage blind slot 13, Second rice grain storage blind slot 14, Longitudinal rotating shaft 15, Drive motor 16, Pressing plate 17, Lower surface of the pressing plate 18, Side of the panel where the longitudinal rotating shaft is located 19, Sliding hole 20, Connecting seat 21, Connecting column head 22, Spring 23, First end face of the connecting seat 24, End face of the connecting seat furthest from the pressing plate 25, Arc surface 26, Rice grain 27, Rice grain width moving baffle furthest from the rice grain width fixing baffle 28, Rice grain width moving baffle state holding mechanism 29. Detailed Implementation

[0017] 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.

[0018] See Figures 1 to 3 A method for detecting the width of rice grains is disclosed, which utilizes a rice grain width detection device. The device includes a panel 1 with a horizontal upper surface. The panel is equipped with a fixed rice grain width baffle 2, a fixed rice grain length baffle 3, and ten movable rice grain width baffles 4. The movable baffles are parallel to the fixed rice grain width baffle and are distributed along the extension direction of the fixed rice grain length baffles. Both surfaces of the movable baffles along the extension direction of the fixed rice grain length baffles are vertical planes, and the surface of the fixed rice grain width baffle facing the movable baffles is also a vertical plane. An indicator needle 5 is located on the movable rice grain width baffle 28 furthest from the fixed rice grain width baffle. The indicator needle points to a graduation on a vertical scale 6, where the graduation aligned with the indicator needle represents the rice grain width. The vertical scale is positioned on the upper surface of the fixed rice grain length baffles. An upward-facing light source plate 7 is also provided on the panel. The grain length fixed baffle is connected to the grain width fixed baffle. The grain width moving baffle is provided with a grain width moving baffle state holding mechanism 29 between the grain width moving baffle and the panel, which keeps the grain width moving baffle parallel to the grain width fixed baffle and keeps the grain width moving baffle perpendicular to the upper surface of the panel.

[0019] The grain-width moving baffle state-maintaining mechanism includes two longitudinal guide grooves 8 on the panel, two lower guide sliders 9 slidably connected to the two longitudinal guide grooves on the lower side of the grain-width moving baffle, a longitudinally extending anti-rotation step 10 on the upper surface of the grain-length fixed baffle, and an anti-rotation piece 11 slidably overlapping the anti-rotation step on the end face of the grain-length fixed baffle. The step surface of the anti-rotation step is parallel to the upper surface of the panel, and the extension direction of the longitudinal guide groove is parallel to the grain-length fixed baffle. All grain-width moving baffle state-maintaining mechanisms share the anti-rotation step and the longitudinal guide grooves. The grain-width moving baffle state-maintaining mechanism ensures that the displacement of the grain-width moving baffle at both ends along the grain length direction and the displacement at both the upper and lower ends are equal during the movement of the grain-width moving baffle. The longitudinal guide grooves penetrate the panel in the vertical direction. A gap 12 is provided between the grain-width moving baffle and the panel. The surface light source will not be damaged when moving the rice grain length fixing bar.

[0020] The rice grain width-fixing baffle, the rice grain length-fixing strip, and the rice grain width-fixing baffle together form a first rice grain storage blind slot 13. Two adjacent rice grain width-fixing baffles and rice grain length-fixing strips form a second rice grain storage blind slot 14; there are a total of nine second rice grain storage blind slots. Both the first and second rice grain storage blind slots are located above the light source plate. The surfaces of the rice grain width-fixing baffles, the rice grain width-fixing baffles, and the rice grain width-fixing baffles located on one side of the first rice grain storage blind slot, as well as the surfaces of the rice grain width-fixing baffles, located on one side of the first and second rice grain storage blind slots, are all provided with mirror layers that come into contact with the rice grains during detection.

[0021] The present invention also includes a rice grain anti-rotation mechanism, which includes a longitudinal rotating shaft 15 rotatably connected to the side of the panel, a drive motor 16 for driving the longitudinal rotating shaft to rotate, and ten pressing plates 17. The lower surface 18 of the pressing plates is flat. The grain width fixing baffle is located between the grain length fixing baffle and the side panel 19 where the longitudinal rotating shaft is located. The side panel where the longitudinal rotating shaft is located is flat. The ten pressing plates are respectively located above the first rice grain storage blind slot and above the nine second rice grain storage blind slots. Ten connecting seats 21 with sliding holes 20 are fixedly connected to the longitudinal rotating shaft. The pressing plates are provided with connecting posts 22. The ten connecting posts on the ten pressing plates are correspondingly inserted into the ten sliding holes. Springs 23 are provided in the sliding holes to drive the connecting posts to move into the sliding holes. When the lower surface of the pressing plate is parallel to the upper surface of the panel, the first end face 24 of the connecting seat abuts against the side panel where the longitudinal rotating shaft is located, preventing the pressing plate from rotating towards the panel. The first end face of the connecting seat is the end face of the connecting seat facing the panel when the lower surface of the pressing plate is parallel to the upper surface of the panel. When the lower surface of the pressing plate is in a vertical state, the end face 25 of the connecting seat away from the pressing plate is parallel to the longitudinal rotating shaft. The sides of the panels are pressed together to prevent the pressing plate from rotating away from the panel. The first end face of the connecting seat and the side of the panel where the longitudinal rotating shaft is located are connected by an arc surface 26. The process of detecting the grain width of rice is as follows: the longitudinal rotating shaft is rotated until the end face of the connecting seat away from the pressing plate is pressed together with the side of the panel where the longitudinal rotating shaft is located. At this time, the pressing plate is in a vertical state. One grain of rice 27 is placed flat in the first rice grain storage blind slot with its length direction perpendicular to the extension direction of the grain length fixing bar. One grain of rice is placed flat in each of the second rice grain storage blind slots with its length direction perpendicular to the extension direction of the grain length fixing bar. The longitudinal rotating shaft is rotated until the first end face of the connecting seat is pressed together with the side of the panel where the longitudinal rotating shaft is located. At this time, the lower surface of the pressing plate is parallel to the upper surface of the panel. Under the action of the spring, the ten pressing plates press down on the ten grains of rice one by one. Move ten rice grain width moving baffles to: one end of the width direction of the rice grain in the first rice grain storage blind slot abuts against the rice grain width fixed baffle, and the other end abuts against the rice grain width moving baffle closest to the rice grain width fixed baffle; the two ends of the width direction of the rice grain in the second rice grain storage blind slot abut against the two adjacent rice grain width moving baffles respectively; measure the interval distance W1 between the rice grain width moving baffle farthest from the rice grain width fixed baffle and the rice grain width fixed baffle; the rice grain width W = (W1 - W2) / 10, where W2 is the sum of the thicknesses of the nine rice grain width moving baffles excluding the rice grain width moving baffle farthest from the rice grain width fixed baffle; in this embodiment, the rice grain width is obtained by directly reading the scale of the longitudinal scale ruler that is aligned with the rice grain width fixed baffle.When determining whether a rice grain is in contact with the rice grain width moving baffle and the rice grain length fixed baffle, the judgment is made by observing whether the image of the rice grain in the mirror layer is in contact with the rice grain. If the image of the rice grain in the mirror layer of the rice grain fixed baffle of the first rice grain storage blind slot is in contact with the rice grain, it means that the rice grain is in contact with the rice grain width fixed baffle. If the image of the rice grain in the mirror layer of the rice grain width moving baffle of the second rice grain storage blind slot is in contact with the rice grain width moving baffle, it means that the rice grain is in contact with the rice grain width moving baffle.

Claims

1. A method for detecting the width of rice grains, characterized in that, The width of rice grains is detected using a rice grain width detection device, which includes a panel. The upper surface of the panel is horizontal. The panel has a fixed rice grain width baffle, a fixed rice grain length baffle, and ten movable rice grain width baffles. The movable baffles are parallel to the fixed rice grain width baffle and are distributed along the extension direction of the fixed rice grain length baffles. Both surfaces of the movable baffles along the extension direction of the fixed rice grain length baffles are vertical planes. The surface of the fixed rice grain width baffle facing the movable baffles is also a vertical plane. A rice grain width movable baffle state holding mechanism is provided between the movable baffles and the panel to keep them parallel to the fixed rice grain width baffle and perpendicular to the upper surface of the panel. The movable baffles closest to the fixed rice grain width baffle, the fixed rice grain length baffle, and the fixed rice grain width baffle together form a first rice grain storage blind slot. Two adjacent movable baffles... A second rice grain storage blind slot is formed by a rice grain width moving baffle and a rice grain length fixing strip. The process of rice grain width detection is as follows: a rice grain is placed horizontally in the first rice grain storage blind slot with its length direction perpendicular to the extension direction of the rice grain length fixing strip. A rice grain is also placed horizontally in each of the second rice grain storage blind slots with its length direction perpendicular to the extension direction of the rice grain length fixing strip. Ten rice grain width moving baffles are moved such that one end of the width direction of the rice grain in the first rice grain storage blind slot is in contact with the rice grain width fixing baffle, and the other end is in contact with the rice grain width moving baffle closest to the rice grain width fixing baffle. In the second rice grain storage blind slots, both ends of the width direction of the rice grain are in contact with the two adjacent rice grain width moving baffles. The distance W1 between the rice grain width moving baffle farthest from the rice grain width fixing baffle and the rice grain width fixing baffle is measured. The rice grain width W = (W1 - ... W2) / 10, where W2 is the sum of the thicknesses of the nine moving baffles (excluding the moving baffle furthest from the fixed baffle).

2. The method for detecting the width of rice grains according to claim 1, characterized in that, It also includes a longitudinal scale. An indicator needle is provided on the rice grain width moving baffle, which is farthest from the fixed rice grain width baffle. The indicator needle points to the scale on the longitudinal scale. The scale on the longitudinal scale that is aligned with the indicator needle is the grain width of the rice grain.

3. The method for detecting the width of rice grains according to claim 2, characterized in that, The scale is set on the upper surface of the grain length measuring bar.

4. A method for detecting the width of rice grains according to claim 1 or 2, characterized in that, The grain width moving baffle state holding mechanism includes two longitudinal guide grooves on the panel, two lower guide sliders on the lower side of the grain width moving baffle and slidably connected to the two longitudinal guide grooves, a longitudinally extending anti-rotation step on the upper surface of the grain length fixed baffle, and an anti-rotation piece on the end face of the grain length fixed baffle and slidably overlapping the anti-rotation step. The step surface of the anti-rotation step is parallel to the upper surface of the panel, and the extension direction of the longitudinal guide groove is parallel to the grain length fixed baffle. All grain width moving baffle state holding mechanisms share the anti-rotation step and the longitudinal guide groove.

5. The method for detecting the width of rice grains according to claim 4, characterized in that, The longitudinal guide groove runs through the panel in the vertical direction.

6. The method for detecting the width of rice grains according to claim 4, characterized in that, There is a gap between the grain width baffle and the panel.

7. A method for detecting the width of rice grains according to claim 1 or 2, characterized in that, The panel is provided with an upward-facing light source plate, and the first and second rice grain storage blind slots are both located above the light source plate.

8. The method for detecting the width of rice grains according to claim 7, characterized in that, The surfaces of the rice grain width fixing baffle located on one side of the first rice grain storage blind slot, the rice grain width moving baffle located on one side of the first rice grain storage blind slot, and the rice grain width moving baffle located on one side of the second rice grain storage blind slot are all provided with mirror layers that come into contact with the rice grains during detection. When determining whether the rice grains are in contact with the rice grain width moving baffle and the rice grain length fixing baffle, the determination is made by observing whether the image of the rice grain in the mirror layer is in contact with the rice grain. If the image of the rice grain in the mirror layer on the rice grain width fixing baffle of the first rice grain storage blind slot is in contact with the rice grain, it indicates that the rice grain is in contact with the rice grain width fixing baffle. If the image of the rice grain in the mirror layer on the rice grain width moving baffle of the second rice grain storage blind slot is in contact with the rice grain width moving baffle, it indicates that the rice grain is in contact with the rice grain width moving baffle.

9. A method for detecting the width of rice grains according to claim 1, 2, or 3, characterized in that, The grain length fixing strip is connected to the grain width fixing plate.

10. A method for detecting the width of rice grains according to claim 1, 2, or 3, characterized in that, It also includes a rice grain anti-rotation mechanism, which comprises a longitudinal rotating shaft rotatably connected to the side of the panel, a drive motor driving the longitudinal rotating shaft to rotate, and ten pressing plates with flat lower surfaces. A rice grain width-fixing baffle is located between the rice grain length-fixing baffle and the side of the panel where the longitudinal rotating shaft is located. The side of the panel where the longitudinal rotating shaft is located is flat. The ten pressing plates are respectively located above the first rice grain storage blind slot and above nine second rice grain storage blind slots. The longitudinal rotating shaft has ten connecting seats with sliding holes. The pressing plates have connecting posts, and the connecting posts on the ten pressing plates are correspondingly inserted into the sliding holes. Springs are installed in the sliding holes to drive the connecting posts to move towards the sliding holes. When the lower surface of the pressing plate is parallel to the upper surface of the panel, the first end face of the connecting seat abuts against the side of the panel where the longitudinal rotating shaft is located, preventing the pressing plate from moving towards the panel. When the first end face of the connecting seat is parallel to the upper surface of the panel, and the lower surface of the pressing plate is parallel to the upper surface of the panel, the end face of the connecting seat facing the panel is in a vertical state. When the lower surface of the pressing plate is in a vertical state, the end face of the connecting seat away from the pressing plate abuts against the side of the panel where the longitudinal axis of rotation is located, thus preventing the pressing plate from rotating away from the panel. The first end face of the connecting seat and the side of the panel where the longitudinal axis of rotation is located are connected by an arc surface transition. The cylinder where the arc surface is located is coaxial with the longitudinal axis of rotation. In use, first make the pressing plate in a vertical state, then put ten grains of rice into ten rice grain storage blind slots, and then rotate the lower surface of the pressing plate to a horizontal state. Under the action of the spring, the pressing handle moves down, so that the ten pressing plates press the ten grains of rice one by one, thereby avoiding the rice grains from rolling during the process of pushing the rice grains through the rice grain width moving baffle, which would cause a decrease in the measurement accuracy of the rice grain width.

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