A portable apple tree early leaf fall disease area measurement and grading device

Abstract

The application discloses a portable apple tree early defoliation disease area measurement and grading device, and relates to the field of apple tree leaf early defoliation disease area measurement, which comprises a mounting table, a mounting shaft is rotatably connected to the mounting table, and the portable apple tree early defoliation disease area measurement and grading device is characterized in that: the apple tree leaves to be detected are placed on a placing plate, a moving mechanism drives a first transparent glass pressing plate to fix the leaves, a driving mechanism drives the placing plate to rotate to the lower side of a photographing type leaf area meter to take a photo and measure the area, data is transmitted to a display screen, the area is divided into grades, the driving mechanism is used to drive the placing plate to rotate to the upper side of a corresponding grading barrel, the moving mechanism is used to release the leaves, a transmission mechanism is used to drive the placing plate to rotate, and the leaves fall into the grading barrel. The whole process is continuous and automatic, manual operation is not needed, a large amount of time and manpower are saved, and the measurement efficiency is improved, so that the evaluation efficiency of subsequent apple tree leaf brown spot disease, spot defoliation disease or anthracnose leaf blight disease is further improved.

Description

Technical Field

[0001] This invention relates to a technology for measuring the area of ​​early leaf drop disease in apple trees, specifically to a portable device for measuring and grading the area of ​​early leaf drop disease in apple trees. Background Technology

[0002] Early leaf drop disease is a significant factor affecting apple yield and quality during apple cultivation. It primarily includes brown spot, leaf spot disease, and anthracnose leaf blight. Accurately measuring the area affected by early leaf drop disease and rationally classifying affected leaves are crucial for evaluating the disease resistance of apple germplasm resources, promptly understanding the occurrence and development of leaf drop disease, assessing the degree of harm to apple tree growth, and formulating scientific and effective control measures.

[0003] With the development of technology, photographic leaf area meters are gradually being applied in the agricultural field. As a mature technology, photographic leaf area meters can quickly and accurately measure the total leaf area, the area of ​​diseased areas, and the severity of disease by capturing images of leaves and using built-in image processing algorithms. However, most existing detection methods based on photographic leaf area meters are still at the stage of detecting individual leaves. When dealing with a large number of apple tree leaf samples, it is necessary to manually place each leaf at the measurement position, and after measurement, manually grade and collect the leaves according to the calculation results. The whole process is cumbersome and time-consuming, and cannot achieve continuous and automated detection and grading operations, making it difficult to meet the needs of rapid assessment of leaf fall disease in large-scale apple tree planting areas.

[0004] In summary, the existing technology lacks a device that can efficiently, accurately, and automatically calculate and classify the area of ​​early leaf drop disease in apple trees, thus solving the aforementioned problems in detection efficiency. Summary of the Invention

[0005] The purpose of this invention is to provide a portable device for measuring and grading the area of ​​early leaf drop disease in apple trees, so as to solve the problem that the existing technology requires manual grading and collection of the measured leaves, resulting in low measurement efficiency.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a portable device for measuring and grading the area of ​​early leaf drop disease in apple trees, comprising a mounting platform, a mounting shaft rotatably connected to the mounting platform, a drive mechanism connected to the mounting platform being driven to drive the mounting shaft to rotate, a plurality of connecting rods being fixedly connected to the outer surface of the mounting shaft, a transmission frame being fixedly connected to one end of each connecting rod, a transmission shaft being rotatably connected inside the transmission frame, a transmission mechanism connected to the transmission frame being driven to drive the transmission shaft to rotate, a placement plate being fixedly connected to the outer surface of the transmission shaft, a first transparent glass pressure plate being provided on the placement plate, and a moving mechanism connected to the placement plate being provided on the first transparent glass pressure plate, the moving mechanism being used to drive the first transparent glass pressure plate to move up and down;

[0007] A photographic leaf area meter is installed on the top of the mounting platform. The output end of the photographic leaf area meter is electrically connected to a display screen that is fixedly connected to the mounting platform via a wire. The display screen is electrically connected to a PLC controller. Multiple grading bins are connected to the mounting platform.

[0008] Furthermore, the moving mechanism includes a moving frame fixedly connected to the placement plate, a first telescopic drive member fixedly connected inside the moving frame, a transmission block slidably connected to the output end of the first telescopic drive member, and one side of the transmission block fixedly connected to the first transparent glass pressure plate via a connecting post.

[0009] Furthermore, the driving mechanism includes a rotating driving component fixedly connected to the mounting platform, the output end of the rotating driving component is fixedly connected to a driving shaft, a first gear is fixedly sleeved on the outer surface of the driving shaft, and a second gear fixedly sleeved on the outer surface of the first gear is meshed with the mounting shaft.

[0010] Furthermore, the transmission mechanism includes a second telescopic drive member fixedly connected to the transmission frame, and a transmission rack slidably connected to the output end of the second telescopic drive member. A transmission gear fixedly sleeved with the transmission shaft is engaged on one side of the transmission rack.

[0011] Furthermore, a cleaning mechanism is provided on the top of the mounting platform. The cleaning mechanism includes a third telescopic drive component fixedly connected to the mounting platform. A connecting plate is fixedly connected to the output end of the third telescopic drive component. A fourth telescopic drive component is fixedly connected to one side of the connecting plate. A connecting frame is fixedly connected to the output end of the fourth telescopic drive component. Multiple cleaning tubes are fixedly connected to the connecting frame. Multiple air blowing heads are fixedly connected to the outer surface of the cleaning tubes. A connecting tube is fixedly connected to the outer surface of the cleaning tubes. One end of the connecting tube is fixedly connected to a blower fixedly connected to the mounting platform via a flexible hose.

[0012] Furthermore, multiple rubber cleaning plates are fixedly connected to the outer surface of the cleaning tube.

[0013] Furthermore, the top of the mounting platform is provided with a threaded groove, and a protective cover is threadedly connected inside the threaded groove. A carrying handle is fixedly connected to the top of the protective cover.

[0014] Furthermore, the grading bin is threadedly connected to the mounting platform, the top of the placement plate is provided with a mounting groove, an LED light is fixedly connected in the mounting groove, and a second transparent glass pressure plate is fixedly connected in the mounting groove.

[0015] Compared with the prior art, the portable device for measuring and grading the area of ​​early leaf drop disease in apple trees provided by the present invention has the following beneficial effects:

[0016] By placing apple leaf samples into a placement plate, a moving mechanism drives a first transparent glass plate to secure the leaf. A drive mechanism rotates the placement plate to a position below a photographic leaf area meter for image measurement. The data is transmitted to a display screen, and the leaves are graded based on their area. The drive mechanism then rotates the placement plate above the corresponding grading bin. The moving mechanism releases the leaf, and a transmission mechanism rotates the placement plate, causing the leaf to fall into the grading bin. The entire process is continuous and automatic, eliminating the need for manual operation and saving significant time and manpower. Simultaneous feeding and measurement further accelerate the testing speed, enabling rapid processing of large numbers of leaf samples. This provides timely and accurate data support for subsequent assessments of leaf spot, leaf spot disease, or anthracnose leaf blight in apple trees, thereby improving the efficiency of subsequent assessments.

[0017] The cleaning mechanism automatically cleans the surfaces of the first and second transparent glass pressure plates. Through a combination of air blowing and scraping with a rubber cleaning plate, impurities are effectively removed, preventing residual impurities from affecting subsequent measurement accuracy and ensuring the accuracy of each test. A protective cover can be threaded onto the mounting platform to protect the device, and its carrying handle design makes it easy to carry and use in different locations. The grading bin is threaded to the mounting platform for easy disassembly and leaf removal. Furthermore, LED lights mounted on the placement plate illuminate the underside of the leaves through the second transparent glass pressure plate, allowing the photographic leaf area meter to capture clearer images, improving measurement accuracy and providing a more reliable basis for accurately assessing leaf drop disease. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0019] Figure 1 This is a first perspective view of the external structure of the present invention;

[0020] Figure 2 This is a second perspective view of the external structure of the present invention;

[0021] Figure 3 This is a third perspective view of the external structure of the present invention;

[0022] Figure 4 This is a perspective view of the internal structure of the placement plate of the present invention;

[0023] Figure 5 For the present invention Figure 2 Enlarged view of A in the middle;

[0024] Figure 6 For the present invention Figure 3 A magnified view of B in the middle.

[0025] Explanation of reference numerals in the attached figures:

[0026] 1. Mounting platform; 2. Mounting shaft; 3. Connecting rod; 4. Transmission frame; 5. Transmission shaft; 6. Placement plate; 7. First transparent glass pressure plate; 8. Photograph-type leaf area meter; 9. Display screen; 10. Grading bucket; 21. Moving frame; 22. First telescopic drive component; 23. Transmission block; 31. Rotation drive component; 32. Drive shaft; 33. First gear; 34. Second gear; 41. Second telescopic drive component; 42. Transmission rack; 43. Transmission gear; 51. Third telescopic drive component; 52. Connecting plate; 53. Fourth telescopic drive component; 54. Connecting frame; 55. Cleaning pipe; 56. Air blower head; 57. Connecting pipe; 58. Hose; 59. Air blower; 590. Rubber cleaning plate; 61. Threaded groove; 62. Protective cover; 71. Mounting groove; 72. LED light; 73. Second transparent glass pressure plate. Detailed Implementation

[0027] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0028] Example 1

[0029] Please see Figures 1 to 6As shown, the present invention provides a portable device for measuring and grading the area of ​​early leaf drop disease in apple trees, including a mounting platform 1, a mounting shaft 2 rotatably connected to the mounting platform 1, a drive mechanism connected to the mounting platform 1 being driven to drive the mounting shaft 2 to rotate, a plurality of connecting rods 3 being fixedly connected to the outer surface of the mounting shaft 2, a transmission frame 4 being fixedly connected to one end of the connecting rods 3, a transmission shaft 5 being rotatably connected inside the transmission frame 4, a transmission mechanism connected to the transmission frame 4 being driven to drive the transmission shaft 5 to rotate, a placement plate 6 being fixedly connected to the outer surface of the transmission shaft 5, a first transparent glass pressure plate 7 being provided on the placement plate 6, and a moving mechanism connected to the placement plate 6 being provided on the first transparent glass pressure plate 7, the moving mechanism being used to drive the first transparent glass pressure plate 7 to move up and down;

[0030] A photographic leaf area meter 8 is installed on the top of the mounting platform 1. The output end of the photographic leaf area meter 8 is electrically connected to a display screen 9 fixedly connected to the mounting platform 1 via a wire. The display screen 9 is electrically connected to a PLC controller. Multiple grading bins 10 are connected to the mounting platform 1.

[0031] The moving mechanism includes a moving frame 21 fixedly connected to the placement plate 6. A first telescopic drive component 22 is fixedly connected inside the moving frame 21. The first telescopic drive component 22 is an electric telescopic rod. The electric telescopic rod is controlled by a PLC programming program and can be controlled to extend and retract. A transmission block 23 that is slidably connected to the moving frame 21 is fixedly connected to the output end of the first telescopic drive component 22. One side of the transmission block 23 is fixedly connected to the first transparent glass pressure plate 7 through a connecting column.

[0032] The drive mechanism includes a rotation drive component 31 fixedly connected to the mounting platform 1. The rotation drive component 31 is a servo motor, which is controlled by a PLC programming program. The servo motor can be controlled to rotate forward and backward and rotate at different angles. The output end of the rotation drive component 31 is fixedly connected to a drive shaft 32. A first gear 33 is fixedly sleeved on the outer surface of the drive shaft 32. A second gear 34 fixedly sleeved on the outer surface of the first gear 33 is meshed with the mounting shaft 2. The rotation drive component 31 drives the drive shaft 32 to rotate, and the drive shaft 32 drives the mounting shaft 2 to rotate through the first gear 33 and the second gear 34.

[0033] The transmission mechanism includes a second telescopic drive component 41 fixedly connected to the transmission frame 4. The second telescopic drive component 41 is an electric telescopic rod, which is controlled by a PLC programming program to extend and retract. The output end of the second telescopic drive component 41 is fixedly connected to a transmission rack 42 that is slidably connected to the transmission frame 4. One side of the transmission rack 42 is meshed with a transmission gear 43 that is fixedly sleeved with the transmission shaft 5. The second telescopic drive component 41 drives the transmission rack 42 to move, and the transmission rack 42 drives the transmission gear 43 and the transmission shaft 5 to rotate.

[0034] First, the apple tree leaves to be tested are placed on the placement plate 6. Then, a moving mechanism moves the first transparent glass pressure plate 7 downwards, pressing it onto the leaves on the placement plate 6 to secure them. Next, a drive mechanism rotates the mounting shaft 2, which in turn rotates the connecting rod 3, transmission frame 4, transmission shaft 5, and placement plate 6, bringing the leaves on the placement plate 6 below the photographic leaf area meter 8. The photographic leaf area meter 8 then photographs and calculates the diseased area of ​​the leaves on the placement plate 6, simultaneously transmitting the calculated data to the display screen 9. Based on the calculated area, the leaves are then classified into grades. (During this calculation process, the material is simultaneously fed into the placement plate 9.) To achieve continuous measurement, the installation shaft 2 is driven by a drive mechanism to rotate. The installation shaft 2 drives the connecting rod 3, transmission frame 4, transmission shaft 5, and placement plate 6 to rotate, so that the placement plate 6 rotates above the corresponding grading bin 10. Then, the first transparent glass pressure plate 7 is moved upward by the moving mechanism, so that the first transparent glass pressure plate 7 no longer presses down on the leaves on the placement plate 6. Then, the transmission shaft 5 is driven to rotate by the transmission mechanism, and the placement plate 6 is rotated downward. Then, the leaves on the placement plate 6 move downward under the action of gravity, so that they fall into the grading bin 10 for collection. This process is repeated to achieve automatic calculation of the disease area of ​​each apple leaf and automatic grading of the calculated leaves, which facilitates the subsequent assessment of leaf drop disease by staff.

[0035] The technology related to the aforementioned automatic hierarchical control is as follows:

[0036] Automatic grading and control methods

[0037] After the photographic leaf area meter 8 completes the image acquisition and disease area calculation of the leaves, the system will automatically classify and collect data according to the following steps:

[0038] Area data acquisition and grade determination

[0039] The photographic leaf area meter 8 has a built-in or external programmable logic controller (PLC) that pre-stores threshold values ​​for grading leaf disease area. For example:

[0040] Grade 0: Leaves show no disease spots;

[0041] Level 1: Diseased area < 10%;

[0042] Level 2: 10% < diseased area ≤ 25%;

[0043] Level 3: 25% < diseased area ≤ 50%;

[0044] Level 4: Diseased area > 50%.

[0045] The PLC receives the disease area percentage data calculated by the photo-type leaf area meter 8 in real time, compares it with the above threshold, and automatically determines the current leaf level (e.g., level 2).

[0046] Mapping of grade and grading bucket position 10

[0047] Multiple grading bins 10 are connected to the mounting platform 1, each grading bin 10 corresponding to a fixed angular position in the circumferential direction. The PLC internally stores a "grade-angle" mapping table, for example:

[0048] Grade 0 → 30° (Barrel 1);

[0049] Level 1 → 60° (bucket 2);

[0050] Level 2 → 90° (bucket 3);

[0051] Level 3 → 120° (bucket 4);

[0052] Level 4 → 150° (bucket 5).

[0053] The above angles are calibrated based on the initial zero position (i.e., the loading position) of the mounting shaft 2.

[0054] The drive mechanism performs graded rotation.

[0055] When the PLC determines that the current blade is grade 2, the PLC sends a pulse command to the rotation drive 31 (servo motor) to control the drive shaft 32 to rotate. Through the first gear 33 and the second gear 34, the mounting shaft 2 is rotated, so that the placement plate 6 currently carrying the blade rotates from the photo position (usually 0° or another fixed angle) to the 90° position corresponding to grade 2, that is, aligned with the grading barrel 10 marked "barrel 3".

[0056] The servo motor is equipped with an encoder or uses stepper control to ensure accurate rotation angle, thereby achieving a one-to-one correspondence between the placement plate 6 and the target grading bin 10.

[0057] Leaf release and falling into grading bin 10

[0058] Once the placement plate 6 accurately reaches directly above the target grading barrel 10, the PLC first controls the first telescopic drive component 22 (electric telescopic rod) in the moving mechanism to retract, driving the transmission block 23 and the first transparent glass pressure plate 7 to move upward, releasing the pressure on the blades.

[0059] Subsequently, the second telescopic drive component 41 in the PLC-controlled transmission mechanism extends, pushing the transmission rack 42 to move, driving the transmission gear 43 and the transmission shaft 5 to rotate, causing the placement plate 6 to flip downwards (e.g., flip 120° to 150°). The blades slide or fall under their own gravity, accurately landing in the grading bin 10 below.

[0060] Reset and Next Cycle

[0061] After the blade falls into the grading bin 10, the PLC controls the second telescopic drive component 41 to retract in the opposite direction, restoring the placement plate 6 to a horizontal position; simultaneously, the first telescopic drive component 22 remains retracted, awaiting the next feeding. The mounting shaft 2, under PLC control, can continue to rotate, delivering the next calculated blade to the corresponding grading bin 10, or returning to the feeding position for continuous operation. The above is existing technology and will not be elaborated further here.

[0062] Example 2

[0063] Based on Example 1, please refer to Figures 1 to 6 As shown, a cleaning mechanism is provided on the top of the mounting platform 1. The cleaning mechanism includes a third telescopic drive component 51 fixedly connected to the mounting platform 1. The third telescopic drive component 51 is an electric telescopic rod, which is controlled by a PLC programming program to extend and retract. A connecting plate 52 is fixedly connected to the output end of the third telescopic drive component 51. A fourth telescopic drive component 53 is fixedly connected to one side of the connecting plate 52. A connecting frame 54 is fixedly connected to the output end of the fourth telescopic drive component 53. Multiple cleaning pipes 55 are fixedly connected to the connecting frame 54. Multiple air blowing heads 56 are fixedly connected to the outer surface of the cleaning pipes 55. A connecting pipe 57 is fixedly connected to the outer surface of the cleaning pipes 55. One end of the connecting pipe 57 is fixedly connected to a blower device 59 fixedly connected to the mounting platform 1 via a hose 58. The blower device 59 is a blower.

[0064] Multiple rubber cleaning plates 590 are fixedly connected to the outer surface of the cleaning tube 55.

[0065] After the measured blades on the placement plate 6 are placed into the grading bin 10 for collection, the installation shaft 2 is rotated by the drive mechanism to rotate the placement plate 6 to the cleaning mechanism position. Then, the first transparent glass pressure plate 7 is moved to the cleaning position by the moving mechanism. Subsequently, the connecting frame 54 is moved by the fourth telescopic drive member 53, and the cleaning pipe 55 is moved, so that two cleaning pipes 55 are moved above and below the first transparent glass pressure plate 7, and the other cleaning pipe 55 is moved above the second transparent glass pressure plate 73. Then, the blowing device 59 starts working, and the blowing device 59 introduces air into the cleaning pipe 55 through the connecting pipe 57 and the hose 58. Then, the cleaning pipe 55 blows air onto the first transparent glass pressure plate 7 and the second transparent glass pressure plate 73 through multiple air nozzles 56. At the same time, the connecting frame 54 and the cleaning pipe 55 are moved by the fourth telescopic drive member 53, thereby cleaning the first transparent glass pressure plate 7 and the second transparent glass pressure plate 73. Impurities on plate 73 are blown away. Then, the third telescopic drive 51 drives the connecting plate 52, the fourth telescopic drive 53, and the connecting frame 54 to move downwards, so that the rubber cleaning plate 590 on the cleaning tube 55 adheres to the top of the first transparent glass plate 7 and the second transparent glass plate 73. Then, the cleaning tube 55 is moved to scrape and clean the top of the first transparent glass plate 7 and the second transparent glass plate 73. Then, the connecting frame 54 is moved upwards, so that the rubber cleaning plate 590 on the top of the cleaning tube 55 adheres to the bottom of the first transparent glass plate 7. Then, the cleaning tube 55 is moved to scrape and clean the bottom of the first transparent glass plate 7. This realizes the automated cleaning of the surfaces of the first transparent glass plate 7 and the second transparent glass plate 73 without manual operation, which is convenient for staff to use. At the same time, the automated cleaning effectively reduces the impact of impurities remaining on the transparent glass plate on subsequent calculations.

[0066] The top of the mounting platform 1 is provided with a threaded groove 61, and a protective cover 62 is threadedly connected to the threaded groove 61. A carrying handle is fixedly connected to the top of the protective cover 62. After using the measuring device, the protective cover 62 is rotated into the threaded groove 61 to fix it to the mounting platform 1. The protective cover 62 protects the device, and the combination of the carrying handle and the protective cover 62 makes it easy to carry the device.

[0067] The grading barrel 10 is threadedly connected to the mounting platform 1. This threaded connection facilitates the removal of the grading barrel 10 from the mounting platform 1, making it easier to empty the blades inside. The top of the placement plate 6 has a mounting groove 71, in which an LED light 72 is fixedly connected. A second transparent glass pressure plate 73 is also fixedly connected within the mounting groove 71. The LED light 72 emits light, which then illuminates the bottom of the blades through the second transparent glass pressure plate 73. This allows the photographic leaf area meter 8 to take clearer pictures of the blades, improving the accuracy of subsequent measurements.

[0068] Working principle:

[0069] Leaf fixing: Place the apple leaf to be tested onto the placement plate 6. The first telescopic drive component 22 (electric telescopic rod) of the moving mechanism controls the transmission block 23 to slide within the moving frame 21. Through the connecting column, the first transparent glass pressure plate 7 moves downward and presses onto the leaf to achieve fixing.

[0070] Photographic Measurement: The drive mechanism's rotation drive component 31 (servo motor) drives the drive shaft 32 to rotate. The drive shaft 32, through the first gear 33 and the second gear 34, drives the mounting shaft 2 to rotate, which in turn drives the connecting rod 3, transmission frame 4, transmission shaft 5, and placement plate 6 to rotate, causing the blade to rotate below the photographic leaf area meter 8. The photographic leaf area meter 8 photographs the blade to measure the diseased area, transmits the data to the display screen 9, and classifies the area according to its size (synchronous feeding at the feeding position enables continuous measurement).

[0071] Blade grading and collection: Based on the blade grade, the drive mechanism drives the mounting shaft 2 to rotate again, causing the placement plate 6 to rotate above the corresponding grading bin 10. The moving mechanism drives the first transparent glass pressure plate 7 to move upward, and the second telescopic drive component 41 (electric telescopic rod) of the transmission mechanism drives the transmission rack 42 to move. The transmission rack 42 drives the transmission gear 43 and the transmission shaft 5 to rotate, causing the placement plate 6 to rotate downward, and the blades enter the grading bin 10 for collection under the action of gravity.

[0072] Cleanup of the organization:

[0073] Air cleaning: After the blades on the placement plate 6 collect the impurities, the drive mechanism rotates it to the cleaning mechanism position, and the moving mechanism moves the first transparent glass pressure plate 7 to the cleaning position. The fourth telescopic drive member 53 moves the connecting frame 54, causing the cleaning pipe 55 to move above and below the first transparent glass pressure plate 7 and above the second transparent glass pressure plate 73. The air blowing device 59 operates, introducing air into the cleaning pipe 55 through the connecting pipe 57 and the hose 58. The air blowing head 56 blows air onto the first transparent glass pressure plate 7 and the second transparent glass pressure plate 73. At the same time, the fourth telescopic drive member 53 moves the connecting frame 54 and the cleaning pipe 55, blowing away impurities.

[0074] Scraping cleaning: The third telescopic drive 51 drives the connecting plate 52, the fourth telescopic drive 53 and the connecting frame 54 to move downward, so that the rubber cleaning plate 590 on the cleaning tube 55 is attached to the top of the first transparent glass pressure plate 7 and the second transparent glass pressure plate 73, driving the cleaning tube 55 to move and scrape the top; then it drives the connecting frame 54 to move upward, so that the rubber cleaning plate 590 on the top of the cleaning tube 55 is attached to the bottom of the first transparent glass pressure plate 7, driving the cleaning tube 55 to move and scrape the bottom.

[0075] Device protection and portability: After use, the protective cover 62 is screwed into the threaded groove 61 on the top of the mounting platform 1, and the device can be easily carried by the handle.

[0076] Other structural functions: The grading bucket 10 is threadedly connected to the mounting platform 1, making it easy to disassemble and pour out the blades; an LED light 72 is installed in the mounting groove 71 at the top of the placement plate 6, and the light emitted illuminates the bottom of the blades through the second transparent glass pressure plate 73, making the photographic leaf area meter 8 take clearer pictures and improving the measurement accuracy.

[0077] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A portable device for measuring and classifying the area of early leaf fall disease of apple trees, characterized in that it comprises: The device includes a mounting platform (1), on which a mounting shaft (2) is rotatably connected. The outer surface of the mounting shaft (2) is connected to a drive mechanism connected to the mounting platform (1). The drive mechanism is used to drive the mounting shaft (2) to rotate. The outer surface of the mounting shaft (2) is fixedly connected to multiple connecting rods (3). One end of the connecting rod (3) is fixedly connected to a transmission frame (4). The transmission frame (4) is rotatably connected to a transmission shaft (5). The outer surface of the transmission shaft (5) is connected to a transmission mechanism connected to the transmission frame (4). The transmission mechanism is used to drive the transmission shaft (5) to rotate. The outer surface of the transmission shaft (5) is fixedly connected to a placement plate (6). A first transparent glass pressure plate (7) is provided on the placement plate (6). A moving mechanism connected to the placement plate (6) is provided on the first transparent glass pressure plate (7). The moving mechanism is used to drive the first transparent glass pressure plate (7) to move up and down. The top of the mounting platform (1) is equipped with a photographic leaf area meter (8). The output end of the photographic leaf area meter (8) is electrically connected to a display screen (9) that is fixedly connected to the mounting platform (1) via a wire. The display screen (9) is electrically connected to a PLC controller. Multiple grading bins (10) are connected to the mounting platform (1).

2. The portable device for measuring and grading the area of ​​early leaf fall disease in apple trees according to claim 1, characterized in that, The moving mechanism includes a moving frame (21) fixedly connected to the placement plate (6), a first telescopic drive member (22) fixedly connected inside the moving frame (21), a transmission block (23) slidably connected to the output end of the first telescopic drive member (22), and one side of the transmission block (23) fixedly connected to the first transparent glass pressure plate (7) through a connecting column.

3. The portable device for measuring and grading the area of ​​early leaf fall disease in apple trees according to claim 1, characterized in that, The drive mechanism includes a rotating drive component (31) fixedly connected to the mounting platform (1). The output end of the rotating drive component (31) is fixedly connected to a drive shaft (32). A first gear (33) is fixedly sleeved on the outer surface of the drive shaft (32). A second gear (34) is fixedly sleeved on the outer surface of the first gear (33).

4. The portable device for measuring and grading the area of ​​early leaf fall disease in apple trees according to claim 1, characterized in that, The transmission mechanism includes a second telescopic drive member (41) fixedly connected to the transmission frame (4). The output end of the second telescopic drive member (41) is fixedly connected to a transmission rack (42) that is slidably connected to the transmission frame (4). One side of the transmission rack (42) is meshed with a transmission gear (43) that is fixedly sleeved with the transmission shaft (5).

5. The portable device for measuring and grading the area of ​​early leaf fall disease in apple trees according to claim 1, characterized in that, A cleaning mechanism is provided on the top of the mounting platform (1). The cleaning mechanism includes a third telescopic drive component (51) fixedly connected to the mounting platform (1). A connecting plate (52) is fixedly connected to the output end of the third telescopic drive component (51). A fourth telescopic drive component (53) is fixedly connected to one side of the connecting plate (52). A connecting frame (54) is fixedly connected to the output end of the fourth telescopic drive component (53). Multiple cleaning pipes (55) are fixedly connected to the connecting frame (54). Multiple air blowing heads (56) are fixedly connected to the outer surface of the cleaning pipes (55). A connecting pipe (57) is fixedly connected to the outer surface of the cleaning pipes (55). One end of the connecting pipe (57) is fixedly connected to a blowing device (59) fixedly connected to the mounting platform (1) via a hose (58).

6. The portable device for measuring and grading the area of ​​early leaf fall disease in apple trees according to claim 5, characterized in that, Multiple rubber cleaning plates (590) are fixedly connected to the outer surface of the cleaning tube (55).

7. The portable device for measuring and grading the area of ​​early leaf fall disease in apple trees according to claim 1, characterized in that, The top of the mounting platform (1) is provided with a threaded groove (61), and a protective cover (62) is threadedly connected inside the threaded groove (61). A carrying handle is fixedly connected to the top of the protective cover (62).

8. The portable device for measuring and grading the area of ​​early leaf fall disease in apple trees according to claim 1, characterized in that, The grading bin (10) is threadedly connected to the mounting platform (1). The top of the placement plate (6) is provided with a mounting groove (71). An LED light (72) is fixedly connected in the mounting groove (71). A second transparent glass pressure plate (73) is fixedly connected in the mounting groove (71).

Images