Tree diameter at breast height monitoring device based on infrared imaging

Abstract

The utility model relates to the technical field of forestry equipment, and provides a tree DBH (diameter at breast height) monitoring device based on infrared imaging, which comprises a hooping component, a first sliding belt, a second sliding belt, a third sliding belt, a connecting hook, a connecting component, an acquisition component and a positioning metal block, the third sliding belt is in sliding connection with the first sliding track and the second sliding track, the hooping components are arranged at the two ends of the third sliding belt and are in limiting clamping connection with the inner walls of the first sliding track and the second sliding track, the connecting component is arranged at one end of the first sliding belt, and the connecting hook is arranged at one end of the second sliding belt. The first sliding belt, the second sliding belt and the third sliding belt surround a trunk to form a tree ring, the positioning metal block is arranged on the tree ring, and the acquisition component is arranged on the first sliding belt and the second sliding belt to acquire the infrared image difference presented by the temperature difference between the metal block and the trunk as an identifier, so that the diameter at breast height of the trunk is identified.

Description

Technical Field

[0001] The utility model relates to the technical field of forestry equipment, in particular to a tree breast diameter monitoring device based on infrared imaging. Background Art

[0002] Diameter at breast height: also known as trunk diameter, refers to the diameter of the trunk of a tree at breast height above the ground. When the cross section is deformed, the average of the maximum and minimum values ​​is measured. Different trees have different breast heights, and different countries have different regulations on breast height. Generally, the breast height is set at 1.3 meters above the ground.

[0003] For example, the prior art of Chinese patent CN210464381U discloses an infrared breast diameter measuring instrument, which measures the breast diameter of trees through an infrared sensor, but still has the defect of large error caused by uneven sliding.

[0004] At the same time, the prior art lacks a clamping device for the tree trunk, and during the detection process, the measuring equipment is easily bulged or ridged by attachments such as bark, resulting in inaccurate measurement of the diameter at breast height;

[0005] In addition, the existing measurement equipment is too complicated to install and cannot be disassembled, and cannot be reused, resulting in waste of monitoring equipment, and remote transmission and interaction are also impossible.

[0006] The utility model is made to solve the common problems in the field such as large measurement error, lack of tight clamping of tree trunks, complex installation method, non-detachable, non-reusable, lack of remote interaction, etc. Summary of the invention

[0007] The main purpose of the utility model is to propose a tree diameter-at-breast-root monitoring device based on infrared imaging, aiming to solve the technical problems of large measurement errors, lack of tight clamps on tree trunks, complex installation methods, non-disassembly, non-reusability, and lack of remote interaction.

[0008] To achieve the above-mentioned purpose, the utility model proposes a tree breast diameter monitoring device based on infrared imaging, which includes a clamping member, a first sliding belt, a second sliding belt, a third sliding belt, a connecting hook, a connecting member, a collecting member, and at least two positioning metal blocks, one end of the first sliding belt and the second sliding belt are both provided with a first sliding track and a second sliding track, the third sliding belt is slidably connected with the first sliding track and the second sliding track, the clamping member is symmetrically arranged at both end portions of the third sliding belt, and is limitedly engaged with the inner walls of the first sliding track and the second sliding track, the connecting member is arranged on an end surface of the first sliding belt, the connecting hook is arranged on an end surface of the second sliding belt, the first sliding belt, the second sliding belt and the third sliding belt surround the tree to form a tree ring, and at least two of the positioning metal blocks are arranged on the tree ring;

[0009] The collecting component is arranged on the first sliding belt and the second sliding belt, and collects the infrared image difference presented by the temperature difference between the metal block and the tree as an identification to identify the diameter at breast height of the tree.

[0010] Furthermore, the clamping member includes a clamping block and at least one clamping spring, the clamping block is arranged on the inner bottom wall of the first sliding rail and the second sliding rail and can be detachably clamped, one end of at least one clamping spring is connected to the clamping block body, and the other end of at least one clamping spring is connected to both ends of the third sliding belt.

[0011] Furthermore, the inner walls on both sides of the first sliding rail and the second sliding rail are provided with clamping grooves, and the two sides of the third sliding belt are provided with clamping protrusions, the clamping protrusions and the clamping grooves are slidably clamped, and the track widths of the first sliding rail and the second sliding rail are adapted to the thickness of the third sliding belt.

[0012] Furthermore, the tree breast diameter monitoring device further comprises a placing component, which is arranged on the third sliding belt and is arranged toward the metal block;

[0013] Wherein, the collecting component is arranged on the placing component and is detachably connected to the placing component.

[0014] Further, the connecting member includes a connecting rod, a first connecting piece, a second connecting piece, a connecting piece, a first adjusting spring, a second adjusting spring, a first limiting rod, a second limiting rod, a toggle piece and a fixing seat, the first connecting piece and the second connecting piece are symmetrically arranged on both sides of the connecting rod, one end of the first connecting piece is hinged to the connecting rod, and the other end of the second connecting piece is hinged to the connecting rod;

[0015] The first limiting rod and the second limiting rod are symmetrically arranged on both sides of one end of the toggle plate, and one end of the first limiting rod is connected to the outer periphery of the toggle plate, and the second limiting rod is connected to the outer periphery of the toggle plate, the other end of the first limiting rod extends toward one side of the first connecting piece, and the second limiting rod extends toward one side of the second connecting piece, the first adjustment spring is nested on the other end of the first limiting rod and the outer periphery of one end of the first connecting piece, and is limitedly engaged with the other end of the first limiting rod and the end of the other end of the first connecting piece, and the second adjustment spring is nested on the other end of the second limiting rod and the outer periphery of one end of the second connecting piece, and is limitedly engaged with the other end of the second limiting rod and the end of the other end of the second connecting piece;

[0016] The other end of the toggle piece is hinged to the fixing seat, and the fixing seat is fixedly arranged on one side end surface of the second sliding belt.

[0017] Furthermore, the collection component includes a collection seat, an infrared data collector and a data storage device, the collection seat is for the infrared data collector to be placed, the infrared data collector collects infrared image data of the metal block and the tree trunk, and the data storage device stores the infrared image data collected by the infrared data collector;

[0018] Among them, a limiting protrusion is provided on one side end surface of the collection seat, and the limiting protrusion is detachably connected to the placing component.

[0019] Furthermore, the placement component includes a connecting portion and a placement track, the connecting portion is arranged on the third sliding belt and is arranged toward the positioning metal block, and the placement track is arranged on the connecting portion, and the placement track is used for the collection seat to slide and engage.

[0020] Furthermore, the connecting hook provided on the first sliding belt and the connecting member provided on the second sliding belt are detachably connected.

[0021] Furthermore, the clamping spring is selected to match the trunk circumference range of different tree species.

[0022] Furthermore, the connecting hook arranged on the first sliding belt and the connecting member arranged on the second sliding belt are arranged in the same direction.

[0023] The beneficial effects of the utility model are as follows:

[0024] 1. Through the cooperation between the collection component 21 and the positioning metal and the clamping component, the monitoring capability of the tree diameter is made more efficient, and the whole device is ensured to have the advantages of high flexibility, strong non-destructive monitoring capability, and quick and easy assembly;

[0025] 2. Through the automatic adjustment ability of the clamping components, the growth of trees will not be damaged during their growth, and the impact of the ridges on the trees on the tree diameter monitoring will be reduced. It has the advantages of strong measurement ability, small error and high flexibility;

[0026] 3. Through the coordination of the connecting components, the tightening components and the tree rings, the tightening effect of the tree rings is improved, and the defect of restricting the growth of trees due to over-tightening of the tightening rings is also prevented to the greatest extent;

[0027] 4. Through the cooperation between the connecting components and the locking hook, the tree ring can be wrapped around the tree trunk to improve the accuracy and reliability of collecting the tree diameter. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0029] Figure 1 It is a structural schematic diagram of the tree ring of the utility model;

[0030] Figure 2 for Figure 1 Schematic cross-sectional view at AA in the middle;

[0031] Figure 3 It is a partial structural schematic diagram of the first sliding track and the third sliding belt of the utility model;

[0032] Figure 4 It is a partial structural schematic diagram of the first sliding belt, the third sliding belt and the tightening member of the utility model;

[0033] Figure 5 for Figure 4 The enlarged schematic diagram of point B in the middle;

[0034] Figure 6 It is a top view schematic diagram of the connecting member of the utility model;

[0035] Figure 7 for Figure 6 Schematic cross-sectional view at CC in the middle;

[0036] Figure 8 This is a schematic diagram of application scenarios of the tree rings and tree trunks of the utility model;

[0037] Fig. 9 It is a structural schematic diagram of the collection component of the utility model;

[0038] Fig.10 It is a structural schematic diagram of the connecting hook of the utility model;

[0039] Explanation of the accompanying drawings: 1. first sliding belt; 2. second sliding belt; 3. third sliding belt; 4. snap-fit ​​block; 5. tightening spring; 6. connecting hook; 7. connecting rod; 8. first connecting plate; 9. first adjusting spring; 10. toggle plate; 11. first limiting rod; 12. second connecting plate; 13. second limiting rod; 14. second adjusting spring; 15. locking cavity; 16. limiting head; 17. snap-fit ​​part; 18. deformation part; 19. snap-fit ​​cavity; 20. placement track; 21. collecting component; 22. limiting protrusion; 23. positioning metal block; 24. fixing seat; 25. tree.

[0040] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0041] 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 of 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.

[0042] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0043] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0044] The following combination Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Fig. 9 and Fig.10 As shown, and related embodiments further illustrate the scheme of the utility model. This embodiment provides a tree breast diameter monitoring device based on infrared imaging, the tree breast diameter monitoring device includes a clamping member, a first sliding belt 1, a second sliding belt 2, a third sliding belt 3, a connecting hook 6, a connecting member, a collecting member 21, and at least two positioning metal blocks 23, one end of the first sliding belt 1 and the second sliding belt 2 are provided with a first sliding track and a second sliding track, the third sliding belt 3 is slidably connected with the first sliding track and the second sliding track, the clamping member is symmetrically arranged at the two end portions of the third sliding belt 3, and is limitedly engaged with the inner walls of the first sliding track and the second sliding track, the connecting member is arranged on the end face of one end of the first sliding belt 1, the connecting hook 6 is arranged on the end face of one end of the second sliding belt 2, the first sliding belt 1, the second sliding belt 2 and the third sliding belt 3 surround the tree 25 to form a tree ring, and at least two of the positioning metal blocks 23 are arranged on the tree ring;

[0045] The collecting component 21 is arranged on the first sliding belt 1 and the second sliding belt 2 , and collects the infrared image difference presented by the temperature difference between the metal block and the tree as a mark to identify the diameter at breast height of the tree 25 .

[0046] Furthermore, the clamping member includes a clamping block 4 and at least one clamping spring 5, the clamping block 4 is arranged on the inner bottom wall of the first sliding rail and the second sliding rail and can be detachably clamped, one end of at least one clamping spring 5 is connected to the body of the clamping block 4, and the other end of at least one clamping spring 5 is connected to both ends of the third sliding belt 3.

[0047] The inner walls of the first sliding track and the second sliding track are provided with a clamping cavity 19, and the clamping cavity 19 is used for the clamping block 4 to be clamped and limited, so that the clamping block 4 is on the clamping cavity 19;

[0048] When the clamping block 4 limits the clamping spring 5, the clamping spring 5 can be fixed on the clamping block 4 and provide elastic force limitation for the third sliding block, so that the formed tree ring can be bound to the tree 25;

[0049] like Figure 5 As shown, the clamping block 4 includes a limit head 16, a deformation portion 18 and a clamping portion 17, the deformation portion 18 is symmetrically arranged on both sides of the clamping portion 17, and the two ends of the deformation head are respectively connected to the clamping portion 17 and the limit head 16;

[0050] The limiting head 16 is semicircular and made of silicone rubber or rubber, so that the clamping portion 17 is clamped in the clamping cavity 19 to limit the clamping spring 5;

[0051] Furthermore, the clamping spring 5 is selected according to the diameter range of the tree 25 of different tree species. At the same time, in this embodiment, the clamping spring 5 is selected according to the tree species of different tree ages or different growth speeds, so that the entire device will not affect the growth of the tree during the process of monitoring the tree, and the flexibility and accuracy of the entire device in monitoring the tree diameter are guaranteed;

[0052] Among them, through the automatic adjustment ability of the clamping component, the growth of the tree will not be damaged during its growth process, and the impact of the protrusions on the tree on the tree diameter monitoring is reduced. It has the advantages of strong measurement ability, small error and high flexibility.

[0053] In this embodiment, when the tree diameter needs to be monitored, the first sliding belt 1 and the second sliding belt 2 are manually pulled so that the connecting member and the connecting hook 6 are detachably connected to each other. At this time, due to the elastic force of the tightening spring 5, the formed tree ring can be wrapped around the tree diameter, thereby binding the tree diameter. At this time, the infrared image of the positioning metal block and the tree diameter is collected by the collecting component 21, and the tree diameter can be known through the collected infrared image data.

[0054] In this embodiment, through the mutual cooperation between the collecting component 21 and the positioning metal block and the clamping component, the monitoring capability of the tree diameter is made more efficient, and the whole device is ensured to have the advantages of high flexibility, strong non-destructive monitoring capability, and quick and easy assembly.

[0055] Furthermore, the inner walls on both sides of the first sliding rail and the second sliding rail are provided with snap-fit ​​grooves, and snap-fit ​​protrusions are provided on both sides of the third sliding belt 3. The snap-fit ​​protrusions and the snap-fit ​​grooves are slidably snap-fitted, and the track widths of the first sliding rail and the second sliding rail are adapted to the thickness of the third sliding belt 3.

[0056] In this embodiment, the snap-in groove is in the shape of a semicircular groove, and the snap-in protrusion is in the shape of a semicircular protrusion. At the same time, the snap-in protrusion and the snap-in groove are slidably connected to each other, so that the sliding process of the third sliding belt 3 and the first sliding belt 1 and the second sliding belt 2 is smoother and there will be no sticking defects, thereby ensuring that the formed tree ring monitoring process is more efficient and reliable.

[0057] Furthermore, the tree breast diameter monitoring device further comprises a placing component, which is arranged on the third sliding belt 3 and is arranged toward the positioning metal block;

[0058] The collecting component 21 is arranged on the placing component and is detachably connected to the placing component.

[0059] Furthermore, the collection component 21 includes a collection seat, an infrared data collector and a data storage device, the collection seat is for the infrared data collector to be placed, the infrared data collector collects the infrared image data of the positioning metal block and the tree 25, and the data storage device stores the infrared image data collected by the infrared data collector;

[0060] Among them, a limiting protrusion 22 is provided on one end surface of the collection seat, and the limiting protrusion 22 is detachably connected to the placement component.

[0061] Furthermore, the placement component includes a connecting portion and a placement rail 20, the connecting portion is arranged on the third sliding belt 3 and is arranged toward the positioning metal block 23, and the placement rail 20 is arranged on the connecting portion, and the placement rail 20 is provided for the collection seat to slide and engage.

[0062] In this embodiment, when the operator or manager needs to monitor the tree diameter, the collecting component 21 is loaded on the placement track 20, so that the collecting component 21 can collect the infrared image data of the positioning metal block 23 and the tree diameter, thereby obtaining the infrared image data of the tree diameter and the positioning metal block 23;

[0063] It is worth noting that the positions of at least two of the positioning metal blocks 23 are set to be arranged in the middle position of the end surface of the tree 25, such as Figure 8 As shown ( Figure 8 The dotted line in the middle shows the collection viewing angle range of the infrared data collector);

[0064] In this embodiment, the tree ring needs to be able to adjust its size to accommodate trees of different diameters. The tree ring is pre-set with locations for installing positioning metal blocks to ensure that the positioning metal blocks can be evenly distributed around the tree ring. The positioning metal blocks should be made of materials with good thermal conductivity so that they can quickly reach a temperature balance with the tree. The size and shape of the positioning metal blocks should be designed to be easy for the infrared camera (infrared data collector) to identify. At the same time, an infrared camera with high resolution and good sensitivity is selected to ensure that the infrared image differences caused by temperature differences can be accurately captured.

[0065] At the same time, fix the tree ring at the breast height of each tree to be tested (usually 1.3 meters from the ground).

[0066] In addition, in this embodiment, a step of processing the collected infrared image data to obtain a specific tree diameter at breast height is provided:

[0067] S1. Image preprocessing

[0068] Image loading: First, import the image captured by the infrared camera into the image processing software or system.

[0069] Noise filtering: Use filtering algorithms to remove noise from images and improve image quality. Common filtering algorithms include median filtering, Gaussian filtering, etc.

[0070] Brightness and contrast adjustment: Adjust the brightness and contrast according to the specific conditions of the image to make the temperature difference between the positioning metal block and the trees more obvious.

[0071] Image enhancement: Image enhancement techniques are used to highlight important features, such as edge enhancement, to facilitate subsequent feature extraction and analysis.

[0072] S2. Feature extraction

[0073] Edge detection: Use edge detection algorithms to identify and locate the edges of metal blocks. Commonly used edge detection algorithms include Sobel and Canny.

[0074] Area marking: Mark the detected edges of the positioning metal blocks to determine the position and size of each positioning metal block.

[0075] Temperature difference distinction: Based on the characteristics of temperature difference, metal blocks and trees can be distinguished and located to ensure the accuracy of feature extraction.

[0076] S3. Calculation of DBH

[0077] Determine the measurement baseline: Based on the position of the tree rings and the known layout of the positioning metal blocks, determine a measurement baseline. This baseline should be parallel to the edge of the image and pass through all important temperature difference areas (the areas where the positioning metal blocks are located).

[0078] Measuring the spacing between metal blocks: Calculate the pixel distance between adjacent positioning metal blocks. Since the placement of positioning metal blocks is uniform, these distances can be used to estimate the tree's diameter at breast height.

[0079] Pixel to real-size conversion: Convert pixel distances to real-size using known size standards (such as the diameter of a tree ring or specific markings at the installation). This step takes into account camera-specific parameters such as focal length and shooting distance.

[0080] In this embodiment, the device protected by the utility model measures a regular tree, and irregular trees are not the objects of protection involved in this embodiment;

[0081] Comprehensive calculation of DBH: Based on all measured spacings between positioning metal blocks, the DBH of the tree is calculated comprehensively.

[0082] In the process of comprehensive calculation of tree diameter at breast height, the following steps are followed:

[0083] S11. Measure pixel distance

[0084] First, determine the pixel distance (P) between the dowels. This can be done by measuring directly in the image processing software. If the dowels surround the tree, you may need to measure the length of the major axis of the circle or ellipse formed by the dowels on the image.

[0085] S12. Conversion from pixels to actual distance

[0086] Use the following formula to convert pixel distance to actual distance:

[0087] ;

[0088] Where L is the actual distance, P is the pixel distance, s is the physical size of each pixel on the camera sensor, D is the distance from the camera to the object, and f is the focal length of the camera.

[0089] S13. Calculate the tree diameter at breast height

[0090] For circular or elliptical annular areas (formed by the positioning metal block in the image), measure its diameter directly (in pixel units) and then use the above conversion formula to calculate the actual diameter.

[0091] The specific DBH calculation is: If the tree ring completely surrounds the tree, forming a complete circle, and the pixel diameter of the ring area is known to be P d , then the actual diameter D tree It can be calculated by the following formula:

[0092]

[0093] Among them, D tree represents the actual length of the tree's diameter at breast height, s is the physical size of each pixel on the camera sensor, D is the distance from the camera to the object. In this embodiment, the distance from the camera to the positioning metal block is fixed, which is equivalent to a known value. f is the focal length of the camera, which is directly obtained by the selected camera sensor or infrared sensor.

[0094] At the same time, analyzing the collected infrared image data of the tree diameter and the positioning metal block 23 by computer image processing technology to obtain the specific circumference of the tree diameter is a conventional method in the prior art.

[0095] Furthermore, the connecting hook 6 provided on the first sliding belt 1 and the connecting member provided on the second sliding belt 2 are detachably connected.

[0096] Furthermore, the connection hook 6 provided on the first sliding belt 1 and the connection member provided on the second sliding belt 2 are respectively provided in the same direction. Thus, the connection hook 6 and the connection member can be detachably connected to each other, and then the tree ring is wrapped around the tree diameter;

[0097] Further, the connecting member includes a connecting rod 7, a first connecting piece 8, a second connecting piece 12, a connecting piece, a first adjusting spring 9, a second adjusting spring 14, a first limiting rod 11, a second limiting rod 13, a toggle piece 10 and a fixing seat 24, the first connecting piece 8 and the second connecting piece 12 are symmetrically arranged on both sides of the connecting rod 7, one end of the first connecting piece 8 is hinged to the connecting rod 7, and the other end of the second connecting piece 12 is hinged to the connecting rod 7;

[0098] The first limiting rod 11 and the second limiting rod 13 are symmetrically arranged on both sides of one end of the toggle plate 10, and one end of the first limiting rod 11 is connected to the outer periphery of the toggle plate 10, and the second limiting rod 13 is connected to the outer periphery of the toggle plate 10, the other end of the first limiting rod 11 extends toward one side of the first connecting piece 8, and the second limiting rod 13 extends toward one side of the second connecting piece 12, the first adjusting spring 9 is nested on the other end of the first limiting rod 11 and the outer periphery of one end of the first connecting piece, and is position-limitedly engaged with the other end of the first limiting rod 11 and the end of the other end of the first connecting piece, and the second adjusting spring 14 is nested on the other end of the second limiting rod 13 and the outer periphery of one end of the second connecting piece, and is position-limitedly engaged with the other end of the second limiting rod 13 and the end of the other end of the second connecting piece;

[0099] The other end of the paddle 10 is hinged to the fixing seat 24 , and the fixing seat 24 is fixedly disposed on one side end surface of the second sliding belt 2 .

[0100] Wherein, the connecting hook 6 is a locking cavity 15 in the form of a semicircular arc or a semi-elliptical arc;

[0101] In this embodiment, after the first sliding belt 1, the second sliding belt 2 and the third sliding belt 3 are wound around the tree 25, the connecting rod 7 is pressed against the semicircular arc locking cavity 15 of the connecting hook 6, and the toggle plate 10 is toggled so that the connecting rod 7 toggle the connecting hook 6 toward the side close to the toggle rod (at this time, the toggle plate 10 is toggled along the hinge position toward the side away from the connecting hook 6), thereby pressing the first sliding belt 1 and the second sliding belt 2 together;

[0102] On the contrary, when the binding of the first sliding belt 1 and the second sliding belt 2 is released, the toggle plate 10 is toggled so that the toggle plate 10 rotates along the hinged position, and the toggle plate 10 is toggled toward one side of the connecting hook 6, and the connecting rod 7 is toggled out from the semicircular arc locking cavity 15 of the connecting hook 6, thereby realizing the release operation of the connecting rod 7 and the connecting hook 6;

[0103] Through the cooperation between the connecting member and the locking hook, the tree ring can be wrapped around the tree to improve the accuracy and reliability of collecting the tree diameter;

[0104] At the same time, in this embodiment, through the mutual cooperation of the connecting member, the clamping member and the tree ring, the clamping effect of the tree ring is improved, and the defect of restricted tree growth caused by over-tightening is prevented to the maximum extent.

[0105] The above description is only a preferred embodiment of the utility model, and does not limit the patent scope of the utility model. All equivalent structural changes made by using the contents of the utility model specification and drawings under the utility model concept, or directly / indirectly used in other related technical fields are included in the patent protection scope of the utility model.

Claims

1. A tree diameter at breast height monitoring device based on infrared imaging, characterized in that: The tree diameter-at-breast-length monitoring device comprises a clamping member, a first sliding belt, a second sliding belt, a third sliding belt, a connecting hook, a connecting member, a collecting member, and at least two positioning metal blocks, one end of each of the first sliding belt and the second sliding belt is provided with a first sliding track and a second sliding track, the third sliding belt is slidably connected with the first sliding track and the second sliding track, the clamping member is symmetrically arranged at both end portions of the third sliding belt, and is position-limitedly engaged with the inner walls of the first sliding track and the second sliding track, the connecting member is arranged on an end surface of the first sliding belt, the connecting hook is arranged on an end surface of the second sliding belt, the first sliding belt, the second sliding belt and the third sliding belt are surrounded on the tree to form a tree ring, and at least two of the positioning metal blocks are arranged on the tree ring; The collecting component is arranged on the first sliding belt and the second sliding belt to collect the infrared image difference presented by the temperature difference between the metal block and the tree as an identification, so as to identify the diameter at breast height of the tree.

2. The tree diameter at breast height monitoring device based on infrared imaging according to claim 1 is characterized in that: The clamping member includes a clamping block and at least one clamping spring. The clamping block is arranged on the inner bottom wall of the first sliding rail and the second sliding rail and can be detachably clamped. One end of at least one clamping spring is connected to the clamping block body, and the other end of at least one clamping spring is connected to both ends of the third sliding belt.

3. The tree breast diameter monitoring device based on infrared imaging according to claim 2 is characterized in that: The inner walls on both sides of the first sliding rail and the second sliding rail are provided with clamping grooves, and the two sides of the third sliding belt are provided with clamping protrusions. The clamping protrusions and the clamping grooves are slidably clamped, and the track widths of the first sliding rail and the second sliding rail are adapted to the thickness of the third sliding belt.

4. The tree diameter at breast height monitoring device based on infrared imaging according to claim 3 is characterized in that: The tree breast diameter monitoring device further comprises a placing component, which is arranged on the third sliding belt and is arranged toward the metal block; Wherein, the collecting component is arranged on the placing component and is detachably connected to the placing component.

5. The tree breast diameter monitoring device based on infrared imaging according to claim 4 is characterized in that: The connecting member comprises a connecting rod, a first connecting piece, a second connecting piece, a connecting piece, a first adjusting spring, a second adjusting spring, a first limiting rod, a second limiting rod, a toggle piece and a fixing seat, wherein the first connecting piece and the second connecting piece are symmetrically arranged on both sides of the connecting rod, one end of the first connecting piece is hinged to the connecting rod, and the other end of the second connecting piece is hinged to the connecting rod; The first limiting rod and the second limiting rod are symmetrically arranged on both sides of one end of the toggle plate, and one end of the first limiting rod is connected to the outer periphery of the toggle plate, and the second limiting rod is connected to the outer periphery of the toggle plate, the other end of the first limiting rod extends toward one side of the first connecting piece, and the second limiting rod extends toward one side of the second connecting piece, the first adjustment spring is nested on the other end of the first limiting rod and the outer periphery of one end of the first connecting piece, and is limitedly engaged with the other end of the first limiting rod and the end of the other end of the first connecting piece, and the second adjustment spring is nested on the other end of the second limiting rod and the outer periphery of one end of the second connecting piece, and is limitedly engaged with the other end of the second limiting rod and the end of the other end of the second connecting piece; The other end of the toggle piece is hinged to the fixing seat, and the fixing seat is fixedly arranged on one side end surface of the second sliding belt.

6. The tree diameter at breast height monitoring device based on infrared imaging according to claim 5, characterized in that: The collection component includes a collection seat, an infrared data collector and a data storage device, the collection seat is for the infrared data collector to be placed, the infrared data collector collects infrared image data of the metal block and the tree trunk, and the data storage device stores the infrared image data collected by the infrared data collector; Among them, a limiting protrusion is provided on one side end surface of the collection seat, and the limiting protrusion is detachably connected to the placing component.

7. The tree breast diameter monitoring device based on infrared imaging according to claim 6 is characterized in that: The placement component includes a connecting portion and a placement track. The connecting portion is arranged on the third sliding belt and is arranged toward the positioning metal block, and the placement track is arranged on the connecting portion. The placement track is used for the collection seat to slide and engage.

8. The tree diameter at breast height monitoring device based on infrared imaging according to claim 7, characterized in that: The connecting hook arranged on the first sliding belt and the connecting member arranged on the second sliding belt are detachably connected.

9. The tree breast diameter monitoring device based on infrared imaging according to claim 8, characterized in that: The clamping spring that matches the trunk circumference range of different tree species is selected.

10. The tree diameter at breast height monitoring device based on infrared imaging according to claim 9, characterized in that: The connecting hook arranged on the first sliding belt and the connecting member arranged on the second sliding belt are arranged in the same direction respectively.

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