Facility plant leaf area measuring device

Abstract

The utility model belongs to the technical field of plant leaf area measurement, and particularly relates to a facility plant leaf area measuring device which comprises an equipment body and a detection bin for detecting a plant, a side plate is longitudinally installed in the detection bin, and the side plate is used for sequentially dividing the detection bin into a detection chamber and an equipment installation chamber from left to right; a camera and a transparent acrylic plate are sequentially arranged in the detection chamber from top to bottom, the rear side of the transparent acrylic plate is hinged to the rear side of an LED light-emitting plate, and the LED light-emitting plate used for clamping plants is formed between the bottom of the transparent acrylic plate and the bottom of the detection chamber. By additionally arranging the transparent acrylic plate and the camera which are matched with each other, the plant is flattened through the transparent acrylic plate, so that the flattened plant is photographed and recorded through the camera, the photographed picture is subjected to data analysis through the single chip microcomputer, and the leaf surface area of the plant can be conveniently measured.

Description

Technical Field

[0001] The utility model belongs to the technical field of plant leaf area measurement, and in particular relates to a device for measuring the leaf area of ​​a facility plant. Background Art

[0002] Monitoring and evaluating plant growth and health is crucial in fields such as agriculture, horticulture, and ecology. Plant leaf area is one of the important indicators to measure its growth and photosynthesis capacity. Plant leaf area measurement equipment is needed to detect leaf area during the production process.

[0003] At present, the commonly used leaf area measurement methods are the graph paper method and the leaf area meter method. The graph paper method requires manual comparison and counting of leaves on a standard area grid, which is inefficient and has large errors. Although the leaf area meter method has high accuracy, it is expensive and has poor operability. Therefore, there is an urgent need for an efficient, accurate, and automated device to measure the leaf area of ​​facility plants, aiming to improve measurement accuracy, reduce equipment costs, and be applicable to different plants in the facility. Utility Model Content

[0004] The purpose of the utility model is to provide a device for measuring the leaf area of ​​plant in a facility, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a device for measuring leaf area of ​​plant in facilities, comprising: a device body and a detection chamber for detecting plants, a side panel is longitudinally installed in the detection chamber, the side panel is used to separate the detection chamber from left to right into a detection room and a device installation room, a camera and a transparent acrylic plate are arranged in the detection chamber from top to bottom, an LED light-emitting panel for clamping plants is formed between the bottom of the transparent acrylic plate and the bottom of the detection chamber, the rear side of the transparent acrylic plate is hinged to the rear side of the LED light-emitting panel, a single-chip microcomputer electrically connected to the camera is installed in the device installation room, and a display electrically connected to the single-chip microcomputer is installed on the front side of the device body.

[0006] Preferably, a lifting mechanism is also installed in the equipment installation room, and the lifting mechanism is used to make the transparent acrylic plate close to the LED light-emitting board or away from the LED light-emitting board.

[0007] Preferably, the detection room is a detection space with an opening on the front and the other five sides being sealed. A partition is provided in the equipment installation room, and the partition is used to divide the equipment installation room from top to bottom into two identical-sized first installation bins and second installation bins. The single-chip microcomputer and the lifting mechanism are both installed in the first installation bin, and a power supply mechanism for supplying power to the single-chip microcomputer and the lifting mechanism is provided in the second installation bin.

[0008] Preferably, the lifting mechanism includes a column and a lifting rod rotatably installed on the top of the column, a pull rope connected to one end of the lifting rod is provided on the front side of the transparent acrylic plate, and a driving member for flipping drive is provided on the end of the lifting rod away from the pull rope. A through hole connecting the detection chamber and the first installation chamber is opened on the side panel, and the through hole is arranged on one side of the connection between the lifting rod and the pull rope, and the pull rope passes through the through hole.

[0009] Preferably, the driving component includes a steering gear and a rudder bar installed at an output end of the steering gear, a mounting seat for installing the steering gear is provided on the partition, and a connecting rod is rotatably installed between the rudder bar and the lifting rod.

[0010] Preferably, the power supply mechanism includes a voltage converter and a mobile power source which are electrically connected in sequence.

[0011] Preferably, a fixing plate is installed on the rear side of the LED light-emitting panel, and a hinge for flipping is provided between the fixing plate and the transparent acrylic plate.

[0012] Preferably, a fill light is installed on the top of the detection room, the fill light is a circular ring structure, and the camera is installed at the axis of the fill light.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] (1) The utility model adds a transparent acrylic plate and a camera that cooperate with each other, and flattens the plant through the transparent acrylic plate, so that the flattened plant can be photographed and recorded by the camera, and the photographed photo is analyzed by a single-chip microcomputer, so that the leaf area of ​​the plant can be measured.

[0015] (2) The utility model adds a lifting mechanism, which can easily drive the transparent acrylic plate to rise or fall, thereby making it easy to place plants in or take them out of the LED light-emitting board.

[0016] (3) The utility model further reduces the measurement error and eliminates the influence of external factors such as leaf shadows by adding a fill light that cooperates with the camera, using an acrylic transparent pressure plate to unfold the blades, and combining the top fill light with the bottom LED light panel, making the measurement more accurate.

[0017] (4) The utility model adds a display to the device body. The entire measurement process only requires putting the blade on and taking it out, and then clicking the measurement button on the display. The operation is simple and convenient, which greatly improves the measurement speed and shortens the operation time. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional diagram of the utility model;

[0019] Figure 2 This is a schematic diagram of the coordination of the camera, fill light, transparent acrylic plate, hinge and lifting mechanism of the utility model;

[0020] Figure 3 It is a front view of the lifting mechanism, single chip microcomputer and power supply mechanism of the utility model;

[0021] Figure 4 It is a three-dimensional diagram of the lifting mechanism, power supply mechanism and equipment body of the utility model;

[0022] In the figure: 1. Equipment body; 2. Display; 3. Detection chamber; 4. Transparent acrylic plate; 5. LED light-emitting board; 6. Pull rope; 7. Hinge; 8. Fixing plate; 9. Side panel; 10. Camera; 11. Fill light; 12. Lifting rod; 13. Through hole; 14. Column; 15. Partition; 16. Mobile power supply; 17. Voltage converter; 18. Single chip microcomputer; 19. Servo; 20. Rudder rod; 21. Connecting rod; 22. Lifting mechanism. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] refer to Figure 1-4 As shown, the facility plant leaf area measuring device provided by the utility model includes: an equipment body 1 and an inspection chamber for inspecting plants, a side panel 9 is longitudinally installed in the inspection chamber, the side panel 9 is used to separate the inspection chamber from left to right into an inspection room 3 and an equipment installation room, a camera 10 and a transparent acrylic plate 4 are arranged in the inspection room 3 from top to bottom, an LED light-emitting board 5 for clamping plants is formed between the bottom of the transparent acrylic plate 4 and the bottom of the inspection chamber 3, the rear side of the transparent acrylic plate 4 is hinged to the rear side of the LED light-emitting board 5, a single-chip microcomputer 18 electrically connected to the camera 10 is installed in the equipment installation room, and a display 2 electrically connected to the single-chip microcomputer 18 is installed on the front side of the equipment body 1.

[0025] As described above, when using the device body 1, transparent acrylic plate 4, camera 10, single-chip microcomputer 18 and display 2 provided by the utility model, the plant is spread out on the LED light-emitting board 5, and the transparent acrylic plate 4 is pressed on the plant. At this time, the pressed plant is photographed by the camera 10, and the area of ​​the photograph is measured by the single-chip microcomputer 18.

[0026] In the present utility model, combined with Figure 3-4 As shown, a lifting mechanism 22 is also installed in the equipment installation room of the present embodiment, and the lifting mechanism 22 is used to make the transparent acrylic plate 4 close to the LED light-emitting board 5 or away from the LED light-emitting board 5.

[0027] As mentioned above, when using the lifting mechanism 22 provided by the utility model, the lifting mechanism 22 can drive the transparent acrylic plate 4 to automatically open or close on the LED light-emitting plate 5. When opened, the plant is placed on the LED light-emitting plate 5 or the plant is taken out from the LED light-emitting plate 5. When closed, the plant is pressed by the transparent acrylic plate 4.

[0028] Further, in order to facilitate the installation of the lifting mechanism 22, refer to Figure 1-2 and Figure 4 As shown, the detection chamber 3 is a detection space with an opening on the front side and the other five sides being sealed. A partition 15 is provided in the equipment installation chamber, and the partition 15 is used to separate the equipment installation chamber from top to bottom into two first installation chambers and second installation chambers of the same size. The single-chip microcomputer 18 and the lifting mechanism 22 are both installed in the first installation chamber, and the second installation chamber is provided with a power supply mechanism for supplying power to the single-chip microcomputer 18 and the lifting mechanism 22. The equipment body 1 is divided into different spaces by the partition 15, and the lifting mechanism 22 and the power supply mechanism are respectively installed in the equipment body 1 through different spaces.

[0029] Further, in order to allow the transparent acrylic plate 4 to be flipped and installed on the LED light-emitting plate 5, refer to Figure 2 As shown, a fixing plate 8 is installed on the rear side of the LED light-emitting board 5, and a hinge 7 for flipping is provided between the fixing plate 8 and the transparent acrylic plate 4. The fixing plate 8 provides a mounting position for the transparent acrylic plate 4 on the LED light-emitting board 5, and the hinge 7 allows the transparent acrylic plate 4 to be flipped up and down on the fixing plate 8, so that the plant can be placed on the LED light-emitting board 5 and pressed by the transparent acrylic plate 4.

[0030] Further, in order to improve the accuracy of the camera 10, refer to Figure 2 As shown, a fill light 11 is installed on the top of the detection chamber 3. The fill light 11 is a circular ring structure, and the camera 10 is installed at the axis of the fill light 11. The LED light panel 5 is combined with the top fill light 11 and the bottom LED light panel to further reduce the measurement error and eliminate the influence of external factors such as leaf shadows.

[0031] In the present utility model, combined with Figure 3As shown, the lifting mechanism 22 of this embodiment includes a column 14 and a lifting rod 12 rotatably installed on the top of the column 14, a pull rope 6 connected to one end of the lifting rod 12 is provided on the front side of the transparent acrylic plate 4, and a driving member for flipping drive is provided on the end of the lifting rod 12 away from the pull rope 6. A through hole 13 connecting the detection chamber 3 and the first installation bin is opened on the side panel 9, and the through hole 13 is arranged on one side of the connection between the lifting rod 12 and the pull rope 6, and the pull rope 6 passes through the through hole 13.

[0032] As mentioned above, when using the lifting mechanism 22 provided by the utility model, the column 14 in the lifting mechanism 22 provides an installation position for the lifting rod 12, and the lifting rod 12 can be moved up and down by the driving member, so that the transparent acrylic plate 4 can be driven to flip up and down by the pull rope 6, which is convenient for placing plants on the LED light-emitting board 5 or taking them out from the LED light-emitting board 5.

[0033] Further, in order to facilitate driving the lifting rod 12 to turn up and down on the column 14, refer to Figure 3 As shown, the driving member includes a steering gear 19 and a tiller 20 installed at the output end of the steering gear 19, a mounting seat for installing the steering gear 19 is provided on the partition 15, and a connecting rod 21 is rotatably installed between the tiller 20 and the lifting rod 12. The steering gear 19 is fixed to the mounting seat of the steering gear 19 by bolts, the steering gear 19 is connected to the tiller 20, the tiller 20 is connected to the connecting rod 21, the connecting rod 21 is connected to the lifting rod 12, and the lifting rod 12 is connected to the transparent acrylic plate 4 by the pull rope 6. Under the drive of the tiller 20, the lifting rod 12 can be moved up and down, thereby driving the transparent acrylic plate 4 up and down, realizing the automatic lifting of the transparent acrylic plate 4, which can simplify the measurement steps and reduce the time required during the measurement process.

[0034] Further, in order to facilitate the power supply of the components in the device body 1, refer to Figure 3-4 As shown, the power supply mechanism includes a voltage converter 17 and a mobile power supply 16 which are electrically connected in sequence. The mobile power supply 16 can be used to supply power to the components in the device body 1. At the same time, the mobile power supply 16 allows the device body 1 to be used independently when there is no mains power.

[0035] Plant measurement implementation method:

[0036] 1) First, perform calibration. The first time you use the leaf area measurement device, you need to calibrate the camera. Place the calibration plate with a black square printed on it on the LED light-emitting board, use a ruler to measure the actual length of the black square, and at the same time, use the same method as the leaf area measurement to measure the pixel area of ​​the black square, and get the conversion value k between the physical area and the pixel area.

[0037] 2) Formal leaf area measurement. Start the leaf area measurement device. When it is turned on, the servo 19 rotates automatically, the fill light 11 and the LED light-emitting board light up automatically, and the lifting device drives the acrylic plate to rise. At this time, put the leaf in, click the measurement button on the display screen, and the lifting device drives the acrylic plate to descend. After the measurement is completed, the acrylic plate rises. Repeat the above operations to complete the area value measurement of all leaves, then turn off the measurement system and the power supply to complete the single measurement task.

[0038] The combination of a mobile power supply 16 and a voltage converter 17 can be used to power electrical equipment in the device, such as a single-chip microcomputer 18, and the single-chip microcomputer 18 supplies power to the Jetson Nano development board, the fill light 11, and the LED light-emitting base plate; the Jetson Nano development board, as the "brain" of the leaf area measurement device, is connected to the camera 10 via USB to achieve data transmission, is connected to the lifting mechanism 22 via a DuPont line to achieve power supply and control of the servo 19, is connected to the touch display 2 via an HDMI line to achieve visualization of the measurement operation, and is connected to the power supply via a USB line.

[0039] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for measuring leaf area of ​​plant in a facility, characterized in that: include: A device body (1) and a detection chamber for detecting plants, wherein a side plate (9) is longitudinally installed in the detection chamber, and the side plate (9) is used to separate the detection chamber into a detection chamber (3) and a device installation chamber from left to right in sequence, and a camera (10) and a transparent acrylic plate (4) are arranged in the detection chamber (3) from top to bottom in sequence, and an LED light-emitting board (5) for clamping plants is formed between the bottom of the transparent acrylic plate (4) and the bottom of the detection chamber (3), and the rear side of the transparent acrylic plate (4) is hinged to the rear side of the LED light-emitting board (5), a single-chip microcomputer (18) electrically connected to the camera (10) is installed in the device installation chamber, and a display (2) electrically connected to the single-chip microcomputer (18) is installed on the front side of the device body (1).

2. The device for measuring leaf area of ​​greenhouse plants according to claim 1, characterized in that: A lifting mechanism (22) is also installed in the equipment installation room, and the lifting mechanism (22) is used to move the transparent acrylic plate (4) closer to the LED light-emitting plate (5) or farther away from the LED light-emitting plate (5).

3. The device for measuring leaf area of ​​greenhouse plants according to claim 2, characterized in that: The detection chamber (3) is a detection space with an opening at the front and the other five sides being sealed. A partition (15) is provided in the equipment installation chamber, and the partition (15) is used to separate the equipment installation chamber from top to bottom into two identically sized first installation chambers and second installation chambers. The single-chip microcomputer (18) and the lifting mechanism (22) are both installed in the first installation chamber, and a power supply mechanism for supplying power to the single-chip microcomputer (18) and the lifting mechanism (22) is provided in the second installation chamber.

4. The device for measuring leaf area of ​​greenhouse plants according to claim 3, characterized in that: The lifting mechanism (22) comprises a column (14) and a lifting rod (12) rotatably mounted on the top of the column (14); a pull rope (6) connected to one end of the lifting rod (12) is provided on the front side of the transparent acrylic plate (4); a driving member for flipping drive is provided at the end of the lifting rod (12) away from the pull rope (6); a through hole (13) connecting the detection chamber (3) and the first installation chamber is formed on the side plate (9); the through hole (13) is arranged on one side of the connection between the lifting rod (12) and the pull rope (6), and the pull rope (6) passes through the through hole (13).

5. The device for measuring leaf area of ​​greenhouse plants according to claim 4, characterized in that: The driving member comprises a steering gear (19) and a rudder bar (20) mounted at the output end of the steering gear (19); a mounting seat for mounting the steering gear (19) is provided on the partition plate (15); and a connecting rod (21) is rotatably mounted between the rudder bar (20) and the lifting rod (12).

6. The device for measuring leaf area of ​​greenhouse plants according to claim 3, characterized in that: The power supply mechanism comprises a voltage converter (17) and a mobile power source (16) which are electrically connected in sequence.

7. The device for measuring leaf area of ​​greenhouse plants according to claim 1, characterized in that: A fixing plate (8) is installed on the rear side of the LED light-emitting panel (5), and a hinge (7) for flipping is provided between the fixing plate (8) and the transparent acrylic plate (4).

8. The device for measuring leaf area of ​​greenhouse plants according to claim 1, characterized in that: A fill light (11) is also installed on the top of the detection room (3); the fill light (11) is a circular ring structure, and the camera (10) is installed at the axis of the fill light (11).

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