Automatic crop image acquisition device

Abstract

The invention relates to an automatic crop image acquisition device. Comprising an inner frame and a photographing mechanism installed in the inner frame. The inner frame comprises a bottom plate, a top plate and a connecting rod, the side face of the inner frame is sealed through a shading plate, and a shading door is arranged on the shading plate; the photographing mechanism comprises a screw rod, a guide sleeve, a driving nut, a lifting driving motor and a circumferential image acquisition camera; the lead screw is vertically installed in the inner frame, and a guide sleeve is installed on the lead screw in a sliding mode. A driving nut is mounted in the guide sleeve; a circumferential image acquisition camera is arranged on the guide sleeve, and a light supplementing strip is arranged above the circumferential image acquisition camera. According to the invention, a relatively dark environment is created through the shading plate, and light is supplemented through the light supplementing strip, so that the influence of an external light source on an image is avoided, and the accuracy of the image is effectively ensured; the circumferential image acquisition camera is driven by the screw rod mechanism to move in the vertical direction, image acquisition is carried out on different height positions of crops, and the comprehensiveness of acquired images is effectively ensured.

Description

Technical Field

[0001] The present application relates to the technical field of image acquisition equipment, and in particular to an automatic crop image acquisition device. Background Art

[0002] It is a very common technical means to collect images of individual crops, and then segment, extract features and measure geometric parameters of the crop images to analyze the growth, diseases and pests of individual crops. The specific operation is to first collect hyperspectral images, thermal imaging, and chlorophyll fluorescence imaging through corresponding image acquisition machines (such as depth cameras, hyperspectral cameras, etc.) to perform non-destructive monitoring of crops, and then use computers to analyze the corresponding images; this method can achieve early warning and monitoring of crops in stress states such as disease, drought, waterlogging, and nutrient deficiency, so that staff can deal with them in a timely manner.

[0003] Existing crop image acquisition mostly relies on manual photography, which is time-consuming and labor-intensive. In addition, different people have different photography abilities, which easily leads to technical problems such as inaccurate and incomplete image acquisition. Summary of the invention

[0004] In order to solve or partially solve the problems existing in the related art, the present application provides a crop image automatic acquisition device, aiming to solve the problem that the existing image acquisition is time-consuming and labor-intensive.

[0005] To this end, the present application provides a crop image automatic acquisition device, including an inner frame and a photographing mechanism installed in the inner frame;

[0006] The inner frame includes a C-shaped bottom plate, a top plate, and a connecting rod, the bottom plate and the top plate are connected as a whole through a connecting column, and the side of the inner frame is closed by a sunshade, and the sunshade is provided with a sunshade door whose position corresponds to the opening on the bottom plate;

[0007] The photographing mechanism includes a screw rod, a guide sleeve, a driving nut, a lifting driving motor, and a circumferential image acquisition camera;

[0008] The screw rod is vertically installed in the inner frame, a guide groove is constructed on the screw rod, a guide sleeve is slidably installed on the screw rod, and the inner side of the guide sleeve is provided with a guide block embedded in the guide groove; a driving nut screwed with the screw rod thread is rotatably installed in the guide sleeve, and the driving nut is driven to rotate by a lifting drive motor fixedly installed on the guide sleeve;

[0009] A circumferential image acquisition camera is arranged on the guide sleeve, and a fill light strip is arranged above the circumferential image acquisition camera.

[0010] In some embodiments, at least two of the photographing mechanisms are arranged at intervals in the circumferential direction of the inner frame.

[0011] In some embodiments, the tops of all the screw rods are connected as a whole through a rotating frame, and the bottoms of all the screw rods are connected as a whole through a C-shaped connecting plate;

[0012] The rotating frame is rotatably connected to the top plate and is driven to rotate by a rotary drive motor installed on the top plate.

[0013] In some embodiments, a top image acquisition camera is further included, and the top image acquisition camera is disposed on the inner top of the inner frame through a connecting frame and is centrally disposed.

[0014] In some embodiments, the connecting frame is connected to the screw rod through a driving mechanism.

[0015] In some schemes, a plant position recognition camera is provided on the top plate, and a walking mechanism is provided under the bottom plate;

[0016] The plant position recognition camera is connected to a signal input terminal of a controller, and a signal output terminal of the controller is electrically connected to the walking mechanism.

[0017] In some embodiments, a door closing connecting rod is hinged on the shading door, a door closing motor is provided on the shading plate, a crank arm is provided on the output shaft of the door closing motor, and the free end of the crank arm is hinged to the free end of the door closing connecting rod.

[0018] The technical solution provided by this application may have the following beneficial effects:

[0019] The present application creates a relatively dim environment through a sunshade, and then uses a fill light strip to provide fill light, thereby avoiding the influence of external light sources on the image and effectively ensuring the accuracy of the image; the circumferential image acquisition camera is driven to move in the vertical direction through a screw mechanism to capture images of crops at different heights, effectively ensuring comprehensive image acquisition.

[0020] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The above and other objects, features and advantages of the present application will become more apparent through a more detailed description of exemplary embodiments of the present application in conjunction with the accompanying drawings, wherein the same reference numerals generally represent the same components in the exemplary embodiments of the present application.

[0022] Figure 1 is a structural schematic diagram of a crop image automatic acquisition device shown in an embodiment of the present application;

[0023] Figure 2This is the assembly intention of the light shielding door of the crop image automatic acquisition device shown in the embodiment of the present application;

[0024] Figure 3 is another structural schematic diagram of the automatic crop image acquisition device shown in an embodiment of the present application;

[0025] Figure 4 is a schematic diagram of the assembly of a rotating frame of the automatic crop image acquisition device shown in an embodiment of the present application;

[0026] Figure 5 is a schematic diagram of the assembly of a circumferential image acquisition camera of the automatic crop image acquisition device shown in an embodiment of the present application;

[0027] Figure 6 is a schematic diagram of the assembly of a driving nut of the automatic crop image acquisition device shown in an embodiment of the present application;

[0028] Reference numerals:

[0029] 1. Inner frame; 101. Bottom plate; 102. Top plate; 103. Connecting rod; 104. Shading plate; 105. Shading door; 106. Door closing connecting rod; 107. Door closing motor; 108. Crank arm;

[0030] 2. Photographing mechanism; 201. Screw rod; 202. Guide sleeve; 203. Driving nut; 204. Lifting drive motor; 205. Peripheral image acquisition camera; 206. Filling light strip; 207. Rotating frame; 208. Connecting plate; 209. Top image acquisition camera; 210. Connecting frame; 211. Rotating drive motor;

[0031] 3. Plant position recognition camera; 4. Walking mechanism. DETAILED DESCRIPTION

[0032] The embodiments of the present application will be described in more detail below with reference to the accompanying drawings. Although the embodiments of the present application are shown in the accompanying drawings, it should be understood that the present application can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to make the present application more thorough and complete, and to fully convey the scope of the present application to those skilled in the art.

[0033] It should be understood that although the terms "first", "second", "third", etc. may be used in this application to describe various information, this information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of this application, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0034] In the description of the present application, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0035] Unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0036] In order to reduce the workload of crop image collection and ensure that the collected images are complete and comprehensive, please refer to Figures 1 to 6 The present application provides an automatic crop image acquisition device, including an inner frame 1 and a photographing mechanism 2 installed in the inner frame 1.

[0037] The inner frame 1 includes a C-shaped bottom plate 101, a top plate 102, and a connecting rod 103. The top plate 102 and the bottom plate 101 are both roughly circular and arranged parallel to each other. The upper end of the connecting column is fixedly connected to the top plate 102, and the lower end is fixedly connected to the bottom plate 101, so that the bottom plate 101 and the top plate 102 are connected as a whole through the connecting column. In order to ensure the stability of the overall structure of the inner frame 1, four connecting columns are provided, which are evenly spaced along the circumferential direction.

[0038] The side of the inner frame 1 is closed by a shading plate 104, so that a relatively dim environment is formed in the inner frame 1, effectively avoiding the influence of external light sources on the image when taking pictures. The shading plate 104 is provided with a shading door 105 corresponding to the opening on the bottom plate 101, so that when the shading door 105 is opened, a passage is formed on the side of the inner frame 1 through which crops can enter.

[0039] The camera mechanism 2 includes a screw rod 201, a guide sleeve 202, a drive nut 203, a lifting drive motor 204, and a circumferential image acquisition camera 205; the screw rod 201 is vertically installed in the inner frame 1, a guide groove is constructed on the screw rod 201, a guide sleeve 202 is slidably installed on the screw rod 201, and a guide block embedded in the guide groove is provided on the inner side of the guide sleeve 202. Through the guide block and the guide groove, the guide sleeve 202 can only move up and down along the screw rod 201, and The guide sleeve 202 is rotatably mounted with a driving nut 203 that is threadedly connected to the screw rod 201. The driving nut 203 is cylindrical and has gear teeth on its outer circumference. The guide sleeve 202 is provided with a lifting driving motor 204. The rotating shaft of the lifting driving motor 204 is meshed with the driving nut 203 through a gear. When the lifting driving motor 204 drives the driving nut 203 to rotate, the driving nut 203 drives the guide sleeve 202 to move upward or downward along the screw rod 201. The guide sleeve 202 is provided with a circumferential image acquisition camera 205, and a fill light strip 206 is provided above the circumferential image acquisition camera 205.

[0040] When working, open the shading door 105 to open the side of the shading plate 104 to form a passage, then move the inner frame 1 to allow the crops to be photographed to enter the inner frame 1 from the position of the shading door 105; close the shading door 105 to form a relatively dim environment in the inner frame 1.

[0041] The fill light strip 206 is powered on to generate a light source to illuminate the circumferential image acquisition camera 205. Subsequently, the lifting drive motor 204 drives the drive nut 203 to rotate, driving the guide sleeve 202 to move in the vertical direction along the screw rod 201, thereby driving the circumferential image acquisition camera 205 to move in the vertical direction. During the movement, the circumferential image acquisition camera 205 continuously takes pictures of the crop, thereby ensuring that crops at different heights can be photographed, thereby improving the accuracy and comprehensiveness of crop image acquisition.

[0042] In some specific embodiments, at least two photographing mechanisms 2 are arranged at intervals in the circumferential direction of the inner frame 1. When in operation, the crop is photographed from different directions through multiple photographing mechanisms 2, thereby ensuring that the captured image includes different sides of the crop, further ensuring the comprehensiveness of the captured image.

[0043] In some specific embodiments, the tops of all the screw rods 201 are connected as a whole through a rotating frame 207, and the bottoms of all the screw rods 201 are connected as a whole through a C-shaped connecting plate 208; the rotating frame 207 is circular and rotatably connected to the top plate 102, and a rotating drive motor 211 is provided on the top plate 102. The output shaft of the rotating drive motor 211 extends downward through the top plate 102 and is equipped with a driving wheel that is in contact with the outer circumferential surface of the rotating frame 207. When the rotating drive motor 211 rotates, the rotating frame 207 is driven to rotate through the driving wheel, thereby rotating the camera mechanism 2 to different orientations, thereby further ensuring the comprehensiveness of the collected images.

[0044] In some specific embodiments, the crop image automatic acquisition device further includes a top image acquisition camera 209, which is disposed at the inner top of the inner frame 1 through a connecting frame 210 and is centrally disposed. The top image acquisition camera 209 is used to take pictures of the top of the crop to collect images in a bird's-eye view, further ensuring the comprehensiveness of the acquired images.

[0045] In some specific embodiments, the connecting frame 210 is connected to the screw rod 201 through a driving mechanism, and the driving mechanism includes a second guide sleeve 202, a second driving nut 203, and a second lifting drive motor 204, wherein the connection method and structure of the second guide sleeve 202, the second driving nut 203, and the second lifting drive motor 204 are consistent with the above-mentioned guide sleeve 202, the above-mentioned driving nut 203 and the above-mentioned lifting drive motor 204.

[0046] During operation, the top image acquisition camera 209 can be driven to move upward or downward by the driving mechanism, so that the top image acquisition camera 209 is at the same distance from the top of the crop, thereby ensuring the accuracy of the image acquired by the top image acquisition camera 209.

[0047] In some specific embodiments, a plant position recognition camera 3 is provided on the top plate 102 for identifying the position of the crop. A walking mechanism 4 is provided under the bottom plate 101. The walking mechanism 4 includes a driving wheel with a motor and a steering motor. The steering motor is fixedly connected to the bottom plate 101, and the driving wheel is installed on the output shaft of the steering motor. The plant position recognition camera 3 is connected to the signal input end of the controller, and the signal output end of the controller is electrically connected to the walking mechanism 4.

[0048] When working, the position of the crop is determined by the plant position recognition camera 3, and then the device is moved to the position of the crop by the walking mechanism 4, thereby realizing automatic walking of the device and reducing the labor intensity of the staff.

[0049] In some specific embodiments, a closing door connecting rod 106 is hinged on the light-shielding door 105, a closing door motor 107 is provided on the light-shielding plate 104, a crank arm 108 is provided on the output shaft of the closing door motor 107, and the free end of the crank arm 108 is hinged to the free end of the closing door connecting rod 106. When the closing door motor 107 is actuated, the rotation of the light-shielding door 105 is driven by the crank arm 108 and the closing door connecting rod 106, thereby realizing automatic opening and closing of the light-shielding door 105, thereby improving the degree of automation of the device.

[0050] The embodiments of the present application have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The selection of terms used herein is intended to best explain the principles of the embodiments, practical applications, or improvements to the technology in the market, or to enable other persons of ordinary skill in the art to understand the embodiments disclosed herein.

Claims

1. A crop image automatic acquisition device, characterized in that: It includes an inner frame and a photographing mechanism installed in the inner frame; The inner frame includes a C-shaped bottom plate, a top plate, and a connecting rod, the bottom plate and the top plate are connected as a whole through a connecting column, and the side of the inner frame is closed by a sunshade, and the sunshade is provided with a sunshade door whose position corresponds to the opening on the bottom plate; The photographing mechanism includes a screw rod, a guide sleeve, a driving nut, a lifting driving motor, and a circumferential image acquisition camera; The screw rod is vertically installed in the inner frame, a guide groove is constructed on the screw rod, a guide sleeve is slidably installed on the screw rod, and the inner side of the guide sleeve is provided with a guide block embedded in the guide groove; a driving nut screwed with the screw rod thread is rotatably installed in the guide sleeve, and the driving nut is driven to rotate by a lifting drive motor fixedly installed on the guide sleeve; A circumferential image acquisition camera is arranged on the guide sleeve, and a fill light strip is arranged above the circumferential image acquisition camera.

2. The automatic crop image acquisition device according to claim 1, characterized in that: At least two of the photographing mechanisms are arranged at intervals in the circumferential direction of the inner frame.

3. The automatic crop image acquisition device according to claim 1 or 2, characterized in that: The tops of all the screw rods are connected as a whole through a rotating frame, and the bottoms of all the screw rods are connected as a whole through a C-shaped connecting plate; The rotating frame is rotatably connected to the top plate and is driven to rotate by a rotary drive motor installed on the top plate.

4. The automatic crop image acquisition device according to claim 1, characterized in that: It also includes a top image acquisition camera, which is arranged on the inner top of the inner frame through a connecting frame and is centrally arranged.

5. The automatic crop image acquisition device according to claim 4, characterized in that: The connecting frame is connected to the screw rod through a driving mechanism.

6. The automatic crop image acquisition device according to claim 1, characterized in that: A plant position recognition camera is provided on the top plate, and a walking mechanism is provided under the bottom plate; The plant position recognition camera is connected to a signal input terminal of a controller, and a signal output terminal of the controller is electrically connected to the walking mechanism.

7. The automatic crop image acquisition device according to claim 1, characterized in that: The shading door is hinged with a door closing connecting rod, the shading plate is provided with a door closing motor, an output shaft of the door closing motor is provided with a crank arm, and the free end of the crank arm is hinged with the free end of the door closing connecting rod.

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