Three-dimensional measuring device for rice ear length

Abstract

The utility model relates to the technical field of three-dimensional measurement, and discloses a rice ear length three-dimensional measuring device, which comprises a base; the bearing table is fixed on the top of the base, and a rice ear to be measured is placed on the top of the bearing table; the detection mechanism is fixed to the side edge of the base and used for detecting the length of the rice panicles, and the detection mechanism comprises a binocular camera; the binocular camera is used for synchronously acquiring high-definition images of the rice panicles from a left viewpoint and a right viewpoint; the two fixing mechanisms are arranged in the directions of the two ends of the rice ear respectively. According to the utility model, the binocular camera is used for synchronously acquiring high-definition images of rice ears from left and right viewpoints, and the data processing terminal is used for calculating and analyzing three-dimensional data, so that the complex three-dimensional structure information of the rice ears can be captured, and the real arc length of the rice ears in the space can be accurately measured; therefore, the defect that in the prior art, a two-dimensional image can only capture the plane projection length and systematically underestimates the real length of the rice panicle is overcome.

Description

TECHNICAL FIELD

[0001] The utility model relates to three -dimensional measurement technical field especially relates to a rice ear length three -dimensional measurement device. BACKGROUND

[0002] In recent years, with the development of image technology, researchers bring the rice ear collected in the field back to the laboratory, place it on a pure color background, and use a high-definition digital camera or a flatbed scanner to obtain a two-dimensional image of the rice ear. Then, using image processing software, the pixel length is calculated through an algorithm, and the actual length is converted according to the ruler in the image.

[0003] However, when measuring in the laboratory, how to place the rice ear will directly affect the measurement result. If the rice ear is not completely flat, any part that is raised or twisted will be shortened in the two-dimensional image, introducing random error. If the shooting angle is not strictly vertical, perspective distortion will also occur, leading to inaccurate measurement. Moreover, the rice ear is a complex three-dimensional structure in its natural growth state, with branches stretching in all directions, and the ear axis often has natural bending and twisting. The two-dimensional image can only capture the projected length in a certain plane, which is almost always less than the actual arc length in space. This is like taking a picture of a coiled rope on the ground, with the length shown in the photo much shorter than the actual length when the rope is straightened. Therefore, two-dimensional measurement values systematically underestimate the true ear length.

[0004] Therefore, the present application provides a rice ear length three-dimensional measurement device to meet the needs. UTILITY MODEL CONTENT

[0005] The technical problem to be solved by the utility model is to provide a rice ear length three-dimensional measurement device to solve the problem of systematic underestimation of the true rice ear length by existing two-dimensional measurement values, leading to inaccurate measurement structure.

[0006] To solve the above-mentioned problems, the utility model is implemented by the following technical solutions.

[0007] A rice ear length three-dimensional measurement device, comprising:

[0008] a base;

[0009] a bearing table fixed to the top of the base, with a rice ear to be measured placed on the top of the bearing table;

[0010] a detection mechanism fixed to the side of the base for detecting the length of the rice ear, the detection mechanism comprising a binocular camera;

[0011] the binocular camera is used to synchronously collect high-definition images of the rice ear from left and right two viewpoints;

[0012] Two fixing mechanisms are arranged at two ends of the rice ear respectively, and are used for fixing the rice ear.

[0013] The fixing mechanism comprises:

[0014] A fixing base is fixedly connected to the top of the base;

[0015] A sliding block is slidingly connected to the inside of the fixing base;

[0016] A bending rod comprises a free end and a fixed end, and the fixed end is fixedly connected to the side wall of the side of the sliding block close to the bearing table, and is used for adjusting the angle and position of the free end by bending itself;

[0017] A fixed pin is fixedly connected to the free end of the bending rod away from the sliding block, and is used for inserting into the end of the rice ear to fix the rice ear.

[0018] Preferably, the fixing mechanism further comprises:

[0019] A clamping support is clamped to and fixed to the side wall of the base;

[0020] A guide rail is fixed to the top of the clamping support;

[0021] A sliding arm is slidingly connected to the outside of the guide rail;

[0022] A binocular camera is rotatably connected to one end of the sliding arm away from the guide rail, and is used for synchronously collecting high-definition images of the rice ear from two viewpoints;

[0023] A light supplement lamp is rotatably connected to the bottom of the binocular camera, and is used for providing a shadowless lighting environment and eliminating environmental light interference.

[0024] Preferably, the sliding direction of the sliding block is the same as the direction of the side edge of the bearing table close to the fixing base, and the sliding distance of the sliding block in the fixing base is greater than the length of the side of the bearing table close to the fixing base.

[0025] Preferably, the length of the fixed pin is 5-8mm, and the diameter is 1.5-2.5mm.

[0026] Preferably, the fixing mechanism further comprises:

[0027] A positioning marker is fixedly connected to the top of one end of the bending rod close to the fixed pin, and is arranged to have a high-saturation monochrome side wall.

[0028] Preferably, the fixing mechanism further comprises:

[0029] A first magnetic element is fixedly connected to the side wall of the side of the sliding block close to the bearing table;

[0030] A straightening sleeve is sleeved outside the bent rod and is arranged to extrude the bent rod in the straightening sleeve to a straight state by moving the straightening sleeve;

[0031] A second magnetic force member is fixedly connected to one end of the straightening sleeve close to the first magnetic force member, and is used to fix the straightening sleeve to the outside of the fixed end of the bent rod through the magnetic force of the first magnetic force member.

[0032] Preferably, the fixing mechanism further comprises:

[0033] Two anti-skid friction members are arranged on the upper and lower sides of the fixing seat away from the bearing table, and are used to provide a friction force greater than that provided by the side wall of the fixing seat;

[0034] An elastic member is fixedly connected to one end of the sliding block away from the bearing table;

[0035] A locking member is arranged on one end of the sliding block away from the bearing table and is fixedly connected to one end of the elastic member away from the sliding block, and the locking member is arranged to be fixed by the upper and lower sides of the locking member being in contact with the anti-skid friction members.

[0036] Preferably, when the locking member is in contact with the anti-skid friction members, the middle part of the side of the locking member close to the sliding block extends into the sliding block.

[0037] Preferably, further comprising:

[0038] A data processing terminal is fixedly connected to the top of the base and is electrically connected to the binocular camera, and is used to calculate the length of the rice ear.

[0039] The utility model provides a kind of rice ear length three-dimensional measuring device.Compared with prior art, it has the following beneficial effects:

[0040] 1, through binocular camera from left and right two viewpoints synchronous acquisition rice ear high-definition image, in combination with the calculation and analysis of three-dimensional data of data processing terminal, it can capture the complex three-dimensional structure information of rice ear, accurately measure its real arc length in space, so as to solve the defects that two-dimensional image can only capture plane projection length in prior art, systematic underestimate the real length of rice ear.

[0041] 2, the stable fixation of rice ear is realized by the two fixing mechanisms in the device, and the cooperation of fixing seat, sliding block, bent rod and fixed pin can adjust the fixed position and angle according to the actual form of rice ear, to ensure that rice ear remains flat during measurement, so as to solve the defects that two-dimensional image measurement appears random error due to uneven placement of rice ear in prior art. BRIEF DESCRIPTION OF DRAWINGS

[0042] Figure 1 It is the whole structure schematic view of the utility model.

[0043] Figure 2 It is the whole structure schematic view of the utility model Figure 1 It is the enlarged structure schematic view of A place in the middle.

[0044] Figure 3 It is the whole structure schematic view of the utility model sliding block, bending rod, positioning mark, fixed pin, straightening sleeve and locking piece connection structure.

[0045] Figure 4 It is the whole structure schematic view of the utility model fixed mechanism.

[0046] The reference signs in the drawing are:

[0047] 10, base; 20, bearing table; 30, clamping support; 31, guide rail; 32, sliding arm; 33, binocular camera; 34, light supplement lamp; 40, fixed seat; 41, sliding block; 411, first magnetic force piece; 412, anti-skid friction piece; 42, bending rod; 421, positioning mark; 43, fixed pin; 44, straightening sleeve; 441, second magnetic force piece; 45, elastic piece; 46, locking piece; 50, data processing terminal. DETAILED DESCRIPTION

[0048] The utility model will be further described below in combination with specific embodiments, and it should be understood that these embodiments are only used for illustrating the utility model and are not used for limiting the protection scope of the utility model.

[0049] The embodiments of the utility model will be described below through specific examples, and the person skilled in the art can easily understand other advantages and effects of the utility model from the content disclosed in the specification. The utility model can also be implemented or applied through other different specific embodiments, and each detail in the specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the utility model.

[0050] Refer to Figures 1-4 A rice ear length three-dimensional measuring device, comprising:

[0051] Base 10;

[0052] A bearing table 20 is fixed on the top of the base 10, and the bearing table 20 has a rice ear to be measured placed on the top. The bearing table 20 can be made of a white matte ABS plastic plate. The white matte surface can effectively reduce the reflection interference of ambient light, avoid the influence of reflected light on the clarity and accuracy of subsequent image acquisition, and has good wear resistance and impact resistance. ABS plastic material can adapt to frequent sample placement and taking operation in the laboratory, and the surface flatness is easy to control, so that the rice ear can be placed on a relatively stable reference surface to reduce the sample position deviation caused by uneven bearing surface.

[0053] A detection mechanism is fixed on the side of the base 10 and is used for detecting the length of the rice ear. The detection mechanism includes a binocular camera 33.

[0054] The binocular camera 33 is used for synchronously collecting high-definition images of the rice ear from left and right two viewpoints. Specifically, the binocular camera 33 can directly adopt an industrial-grade binocular camera 33 module. The module has a high-precision synchronous trigger module built-in, which can ensure that the left and right two cameras capture images at the same time, avoid image misplacement caused by shooting time difference, and affect the stereo matching precision. The resolution of the camera is selected to be 2 million pixels or more, and the pixel size is not greater than 3.45 μm, so that the fine structure of the rice ear, such as the direction of the branch and the distribution of the ear grain, can be clearly captured. The lens focal length is selected to be 8 mm-12 mm, which can ensure a certain shooting field of view and ensure that the rice ear has enough pixel ratio in the image, thereby improving the measurement precision.

[0055] Two fixing mechanisms are arranged at the two ends of the rice ear respectively and are used for fixing the rice ear.

[0056] The fixing mechanism includes:

[0057] A fixing seat 40 is fixedly connected to the top of the base 10. The fixing seat 40 can be made of stainless steel material. The stainless steel material has high strength and excellent corrosion resistance, can ensure the structural stability of the fixing mechanism in the long-term use process, and is not easy to deform. The connection mode between the fixing seat 40 and the base 10 adopts bolt fastening, which can ensure firm and reliable connection, avoid loosening during adjustment of the sliding block 41, and simultaneously process high-precision sliding guide rails on the fixing seat 40 to provide guarantee for smooth sliding and accurate positioning of the sliding block 41.

[0058] The sliding block 41 is slidably connected in the fixed seat 40, and the sliding block 41 can be made of a light alloy material such as titanium alloy. The titanium alloy material has the characteristics of high strength and low density, which can ensure the structural strength of the sliding block 41 during sliding, reduce the weight of the sliding block 41, and make the sliding operation more convenient and labor-saving. The gap between the sliding block 41 and the sliding guide rail in the fixed seat 40 is controlled to be between 0.01 mm and 0.03 mm to ensure the stability and positioning accuracy of the sliding block 41 during sliding, and to avoid the sliding block 41 from shaking due to the large gap, which affects the accuracy of the fixed position of the fixed mechanism on the rice ear.

[0059] The bending rod 42 includes a free end and a fixed end, and the fixed end is fixedly connected to one side of the sliding block 41 near the side wall of the bearing table 20. The bending rod 42 is made of phosphor copper wire with good elasticity, which can be bent at multiple angles under certain external force and can maintain a stable shape after bending, so as to conveniently adjust the position of the fixed pin 43 according to the position and angle of the end of the rice ear, and ensure that the fixed pin 43 can be accurately inserted into the end of the rice ear. The strength of the phosphor copper wire is moderate, and it will not break due to excessive bending, so it has a long service life.

[0060] The fixed pin 43 is fixedly connected to the free end of the bending rod 42 away from the sliding block 41, and is used for inserting into the end of the rice ear to fix the rice ear. The fixed pin 43 is made of medical-grade stainless steel wire, which has good biocompatibility and corrosion resistance, so as to avoid pollution or corrosion of the rice ear sample after insertion, and the surface of the fixed pin 43 needs to be polished to reduce damage to the rice ear tissue during insertion. The size of the fixed pin 43 is set to ensure that the fixed pin 43 has enough fixing force after being inserted into the rice ear to prevent the rice ear from falling off, and to avoid damaging the structure of the rice ear due to the size being too large.

[0061] Further comprising:

[0062] The clamping support 30 is clamped to the side wall of the base 10 and is fixed. The clamping support 30 can adopt an adjustable clamping structure, and the clamping body is made of high-strength engineering plastic such as polycarbonate. The polycarbonate material has high impact strength and temperature resistance, and can adapt to the use environment of the laboratory. The clamping part is provided with a non-slip rubber pad, which can increase the friction between the clamping support 30 and the side wall of the base 10, so as to ensure that the clamping support 30 will not slide after being clamped and fixed, and to avoid damage to the side wall of the base 10 due to excessive clamping force. The clamping width of the clamping support 30 can be adjusted by adjusting the bolts to adapt to the side wall of the base 10 with different thicknesses, and to improve the versatility of the device.

[0063] The guide rail rod 31 is fixed to the top of the clamping support 30, and is made of aluminum alloy profile. The aluminum alloy profile has good structural stability and processing performance, and can be processed into a specific length and cross-sectional shape, such as a rectangular cross-section, according to the installation requirements of the detection mechanism. The surface needs to be anodized to enhance the wear resistance and corrosion resistance of the guide rail rod 31, prolonging the service life. The fixing method of the guide rail rod 31 and the clamping support 30 adopts welding or bolt fastening to ensure firm connection.

[0064] The sliding arm 32 is slidingly connected to the outside of the guide rail rod 31.

[0065] The binocular camera 33 is rotationally connected to the end of the sliding arm 32 away from the guide rail rod 31, and is used to synchronously collect high-definition images of rice panicles from two viewpoints. The connection structure of the binocular camera 33 and the sliding arm 32 can adopt a precision rotary bearing structure. The bearing is selected to be a cross-roller bearing, which has high rotational accuracy and stiffness, and can withstand combined radial and axial loads to ensure the stability and positioning accuracy of the binocular camera 33 during rotation. The rotation angle range can be set to 0°-360° to facilitate adjustment of the camera angle according to the position of the rice panicle and the shooting requirements. At the same time, an angle locking device such as a locking nut is provided outside the bearing. When the binocular camera 33 is adjusted to the appropriate angle, it is fixed by the locking nut to prevent angle deviation during measurement.

[0066] The light supplement lamp 34 is rotationally connected to the bottom of the binocular camera 33, and is used to provide shadowless lighting environment and eliminate environmental light interference. The connection method of the light supplement lamp 34 and the binocular camera 33 can adopt a damping rotary shaft connection. The damping rotary shaft has appropriate damping force, so that the light supplement lamp 34 can stop at any angle during rotation, facilitating adjustment of the light direction according to the shooting requirements.

[0067] The sliding direction of the sliding block 41 is the same as the side edge direction of the side of the bearing table 20 close to the fixed seat 40, and the sliding distance of the sliding block 41 in the fixed seat 40 is greater than the length of the side of the bearing table 20 close to the fixed seat 40, so that the sliding direction of the sliding block 41 is perpendicular to the direction of the end of the rice panicle, facilitating adjustment of the position of the sliding block 41 to adapt to different positions of the end of the rice panicle caused by different bending states, ensuring that the bending rod 42 has a bending allowance to adjust the angle and position of the fixed pin 43.

[0068] The length of the fixed pin 43 is set to 5-8mm, and the diameter is 1.5-2.5mm. The length can ensure that the fixed pin 43 is inserted into the rice ear with sufficient insertion depth, ensuring firm fixation and preventing the rice ear from falling off during measurement. At the same time, it can avoid damaging the internal structure of the rice ear due to excessive insertion, affecting subsequent research or detection. The diameter can reduce the damage to the rice ear tissue during insertion while ensuring that the fixed pin 43 has sufficient strength. It can also avoid breaking the end of the rice ear due to excessive diameter, affecting the integrity of the sample.

[0069] The fixing mechanism further comprises:

[0070] The positioning marker 421 is fixedly connected to the top of one end of the bent rod 42 near the fixed pin 43, and is set to have a high-saturation monochrome side wall. The high-saturation color has a high contrast in the image, which facilitates the image processing algorithm to quickly identify and locate the position of the positioning marker 421, and then determine the position of the fixed pin 43, providing a reference for the positioning of the end of the rice ear. At the same time, through the positioning marker 421, the straightening sleeve 44 can also be prevented from moving to the outside of the bent rod 42 when moving outside the bent rod 42.

[0071] The fixing mechanism further comprises:

[0072] The first magnetic element 411 is fixedly connected to the side wall of the sliding block 41 near the bearing table 20. The second magnetic element 441 can be made of a permanent magnet material, specifically an iron-boron permanent magnet, which has strong magnetism and can provide sufficient magnetic force to adsorb and fix the second magnetic element 441. The first magnetic element 411 needs to match the second magnetic element 441.

[0073] The straightening sleeve 44 is sleeved outside the bent rod 42, and is set to extrude the bent rod 42 in the straightening sleeve 44 to a straight state by moving the straightening sleeve 44;

[0074] The second magnetic element 441 is fixedly connected to one end of the straightening sleeve 44 near the first magnetic element 411, and is used to fix the straightening sleeve 44 outside the fixed end of the bent rod 42 through the magnetic force of the first magnetic element 411. The second magnetic element 441 can be made of the same material as the first magnetic element 411. The second magnetic element 441 can be designed as a ring structure, so that after the straightening sleeve 44 is rotated by any angle, the second magnetic element 441 can be magnetically connected with the first magnetic element 411 which is also a ring to fix the straightening sleeve 44.

[0075] The fixing mechanism further comprises:

[0076] Two anti-skid friction pieces 412 are arranged on the upper and lower sides of the fixed seat 40 away from the bearing table 20, respectively, for providing a friction greater than that provided by the side wall of the fixed seat 40. The anti-skid friction piece 412 can be directly made of a rubber sheet and attached to the corresponding position, thereby significantly increasing the friction between the locking piece 46 and the anti-skid friction piece 412 by using the characteristic of the rubber having a large friction coefficient, and preventing the locking piece 46 from sliding after being fixed.

[0077] The elastic piece 45 is fixedly connected to the end of the sliding block 41 away from the bearing table 20, and provides a reset elastic force for the locking piece 46. When the sliding block 41 needs to be moved, the locking piece 46 is moved away from the sliding block 41, so that the locking piece 46 is no longer in contact with the anti-skid friction piece 412, thereby facilitating the movement of the sliding block 41. When the sliding block 41 needs to be fixed at a specified position, the locking piece 46 is released, and the locking piece 46 is again in contact with the anti-skid friction piece 412 under the action of the elastic force of the elastic piece 45, thereby generating a large friction force to prevent the movement of the sliding block 41.

[0078] The locking piece 46 is arranged at the end of the sliding block 41 away from the bearing table 20 and is fixedly connected to the end of the elastic piece 45 away from the sliding block 41. The locking piece 46 is arranged to be fixed by being in contact with the anti-skid friction piece 412 on the upper and lower sides of the locking piece 46.

[0079] When the locking piece 46 is attached to the anti-skid friction piece 412, the middle part of the side of the locking piece 46 close to the sliding block 41 extends into the sliding block 41. When the locking piece 46 is fixed by being in contact with the anti-skid friction piece 412, the part of the locking piece 46 extending into the sliding block 41 prevents the movement of the sliding block 41, thereby playing a positioning role on the sliding block 41.

[0080] Further comprising:

[0081] The data processing terminal 50 is fixedly connected to the top of the base 10 and is electrically connected to the binocular camera 33, and is used for calculating the length of the rice ear.

[0082] Working process and principle: place the rice ear to be measured on the bearing table 20, and ensure that the rice ear to be measured is completely within the field of view of the binocular camera 33. Bend the bent rods 42 at both ends of the rice ear to adjust the angle and position of the fixed pins 43, and insert the two fixed pins 43 into both ends of the rice ear to fix the rice ear. Control the binocular camera 33 to collect digital images of the left and right views of the rice ear through the data processing terminal 50, and call the pre-stored calibration file through the data processing terminal 50 to calculate (such as using the calculation method disclosed in the publication No. CN118506177A) the length of the rice ear. After the calculation is completed, the fixed pins 43 are pulled out of the rice ear, the rice ear is saved, and the bent rods 42 are restored to a straight state through the movement of the straightening sleeve 44, thereby facilitating the bending again according to the actual situation next time.

[0083] Thus, although the present application has been described herein with reference to particular embodiments thereof, changes in the form and details of the various steps can be made within the scope of the application without departing from the spirit of the application and without diminishing its intended advantages. Many changes can be made in the particular implementations of the application without departing from the scope and spirit of the application. Therefore, the scope of the application is not intended to be limited to the particular forms disclosed and the application is to cover all modifications and alternatives arising from a reading and understanding of the application as defined by the appended claims. Accordingly, the application is to be considered as limited only by the scope of the appended claims.

Claims

1. A three-dimensional measurement device for rice panicle length, characterized by, The utility model relates to a rice ear length measurement device, including: Base (10); Carrying table (20) is fixed to the top of base (10), and the top of carrying table (20) places the rice ear to be measured; Detection mechanism is fixed to the side of base (10) and is used for detecting the length of rice ear, and the detection mechanism includes binocular camera (33); Binocular camera (33) is used for synchronous acquisition of high-definition image of rice ear from left and right two viewpoints; Two fixing mechanisms are arranged in the direction of both ends of rice ear respectively and are used for fixing rice ear; The fixing mechanism includes: Fixed seat (40) is fixedly connected to the top of base (10); Sliding block (41) is slidingly connected in the inside of fixed seat (40); Bent rod (42) includes free end and fixed end, and the fixed end is fixedly connected to the side wall of one side of sliding block (41) close to carrying table (20) and is used for adjusting the angle and position of free end by bending itself; Fixed pin (43) is fixedly connected to the free end of bent rod (42) away from sliding block (41) and is used for inserting into the end of rice ear and fixing rice ear.

2. The three-dimensional ear length measuring device for rice according to claim 1, wherein Still include: Clamping support (30) is clamped to the side wall of base (10) and is fixed; Guide rail rod (31) is fixed to the top of clamping support (30); Sliding arm (32) is slidingly connected to the outside of guide rail rod (31); Binocular camera (33) is rotatably connected to the end of sliding arm (32) away from guide rail rod (31) and is used for synchronous acquisition of high-definition image of rice ear from left and right two viewpoints; Supplementary light (34) is rotatably connected to the bottom of binocular camera (33) and is used for providing shadowless illumination environment and eliminating environmental light interference.

3. The three-dimensional ear length measuring device for rice according to claim 1, wherein The sliding direction of sliding block (41) is same with the direction of the side of carrying table (20) close to fixed seat (40), and the sliding distance of sliding block (41) in fixed seat (40) is greater than the length of the side of carrying table (20) close to fixed seat (40).

4. The three-dimensional ear length measuring device for rice according to claim 1, wherein The length of fixed pin (43) is set as 5-8mm, and the diameter is 1.5-2.5mm.

5. The three-dimensional ear length measuring device for rice according to claim 1, wherein The fixing mechanism further includes: Positioning mark (421) is fixedly connected to the top of one end of bent rod (42) close to fixed pin (43), and the color of side wall is set as high saturation monochrome.

6. The three-dimensional ear length measuring device for rice according to claim 1, wherein The fixing mechanism further includes: First magnetic force piece (411) is fixedly connected to the side wall of one side of sliding block (41) close to carrying table (20); Straightening sleeve (44) is sleeved to the outside of bent rod (42) and is set as being extruded to straight state by moving straightening sleeve (44) and locating bent rod (42) in straightening sleeve (44); Second magnetic force piece (441) is fixedly connected to the end of straightening sleeve (44) close to first magnetic force piece (411) and is used for fixing straightening sleeve (44) to the outside of fixed end of bent rod (42) by the magnetic force of first magnetic force piece (411).

7. The three-dimensional ear length measuring device for rice according to claim 1, wherein The fixing mechanism further includes: Two anti-skid friction members (412) are arranged on the upper and lower sides of the fixed seat (40) away from the bearing table (20) respectively, for providing a friction force greater than that provided by the side wall of the fixed seat (40); An elastic member (45) is fixedly connected to one end of the sliding block (41) away from the bearing table (20); A locking member (46) is arranged on one end of the sliding block (41) away from the bearing table (20) and is fixedly connected to one end of the elastic member (45) away from the sliding block (41), and the locking member (46) is arranged to be fixed by being in contact with the anti-skid friction members (412) on the upper and lower sides thereof.

8. The three-dimensional ear length measuring device for rice according to claim 7, wherein When the locking member (46) is in contact with the anti-skid friction members (412), the middle part of the side of the locking member (46) close to the sliding block (41) extends into the sliding block (41).

9. The three-dimensional ear length measuring device for rice according to claim 1, wherein Further comprising: A data processing terminal (50) is fixedly connected to the top of the base (10) and is electrically connected to the binocular camera (33), for calculating the length of a rice ear.

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