A measuring device for measuring the vertical height of forest carbon sink trees

Abstract

The present invention discloses a measuring device for measuring the vertical height of forest carbon sink trees, which relates to the technical field of measuring equipment, and includes a support frame, a rotating chassis is provided at the upper end of the support frame, a mounting cover is provided at the upper end of the rotating chassis, and a laser mapper is provided inside the mounting cover. Before starting the formal measurement, the present invention's obstacle detection mechanism will first perform a rotation detection for one week to confirm that there are no obstacles that will affect the normal operation of the laser mapper. Since the obstacle detection mechanism can evaluate whether the position of the support frame is appropriate before the actual measurement, the surveyor can adjust the position or angle of the support frame according to the feedback information to find the best measurement point. When measuring in complex environments such as forests, traditional measurement methods may be limited by the line of sight or difficult-to-reach locations. The obstacle detection mechanism can flexibly respond to different terrain conditions and can effectively locate and measure target trees even in dense forests.

Description

Technical Field

[0001] The present invention relates to the technical field of measuring equipment, and in particular to a measuring equipment for measuring the vertical height of forest carbon sink trees. Background Art

[0002] For example, patent document CN119043125A is titled "A Banana Tree Height Measuring Device." This device utilizes the friction between components on the contact surface to control the stationary state between scale lines, enabling 360-degree angle measurement without blind spots, thereby improving the accuracy of tree height measurements. Furthermore, the device can control the rotational damping strength required when adjusting the observation angle, thereby adjusting the stability of the device according to actual conditions.

[0003] When measuring in complex environments such as forests, the appropriate measurement location cannot be observed due to limited visual range, and the accuracy of target object identification in complex environments such as dense forests is low. This is because the bark and branch surface of forest trees are relatively complex and have low reflectivity, which further increases the difficulty of target object identification. The complex bark and branch structure and low reflectivity of the trees further reduce the accuracy and efficiency of the measurement. Therefore, the present application provides a measurement device for measuring the vertical height of forest carbon sink trees to meet the needs. Summary of the Invention

[0004] The purpose of this application is to provide a measuring device for measuring the vertical height of forest carbon sink trees, which can effectively solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned objectives, the present application provides the following technical solutions: a measuring device for measuring the vertical height of forest carbon sink trees, comprising a support frame, a rotating chassis provided at the upper end of the support frame, a mounting cover provided at the upper end of the rotating chassis, a laser mapper provided inside the mounting cover, a receiver provided at the upper end of the laser mapper, a mapping adjustment mechanism provided inside the laser mapper, a light adjustment mechanism for adjusting the laser beam slidably installed inside the mapping adjustment mechanism, an obstacle detection mechanism for detecting surrounding obstacles provided on one side of the mounting cover, and a control motor provided on one side of the laser mapper;

[0006] The light adjustment mechanism includes an installation mechanism that is slidably installed inside the surveying and mapping adjustment mechanism, an adjustment mechanism for adjusting the laser beam is provided inside the installation mechanism, an irradiation mechanism for amplifying the laser beam is provided inside the adjustment mechanism, and a light column adjustment mechanism for adjusting the laser beam irradiation mode according to the detection environment is provided inside the adjustment mechanism.

[0007] The obstacle detection mechanism includes a protective shell mounted on one side of the mounting cover, a drive motor is provided on one side of the protective shell, an output end of the drive motor extends into the interior of the protective shell and is connected to an obstacle avoidance sensor, the obstacle avoidance sensor is electrically connected to the laser mapper via a data cable, and a laser generator is provided inside the obstacle avoidance sensor;

[0008] A protective mirror is provided inside the mounting cover, and the protective mirror is in a semi-ring shape, and the outer surface of the protective mirror is sprayed with a reflective coating.

[0009] The surveying and mapping adjustment mechanism includes two arc plates installed inside the laser surveyor, and a slide groove is provided inside the two arc plates. A refractive mirror column is provided inside the laser surveyor, and one end of the refractive mirror column is connected to the output end of the control motor. A support plate is provided on the outer surface of the refractive mirror column.

[0010] Among them, the mounting mechanism includes a mounting frame, sliders are provided on both sides of the mounting frame, and the two sliders are slidably installed inside the slide groove. The bottom wall of the mounting frame is connected to the support plate, and mounting grooves are opened on both sides of the inner wall of the mounting frame. Arc mirrors are commonly provided inside the two mounting grooves.

[0011] The adjustment mechanism includes a reflective shell, an inner groove is provided on the inner wall of the reflective shell, arc blocks are provided on both sides of the reflective shell, a controller is provided on one side of the reflective shell, a push rod is provided inside the controller, the reflective shell is provided inside the mounting frame, and the arc blocks are attached to the surface of the arc plate.

[0012] The reflective shell is in a sector shape, and the inner wall of the reflective shell is provided with a reflective coating.

[0013] In which, the light column adjustment mechanism includes a diffraction component, and the diffraction component includes a first connecting member, which is installed at one end of the push rod. The first connecting member clamps a diffraction grating inside, and the outer surface of the diffraction grating is provided with a frame bar, and the diffraction grating is slidably installed inside the inner groove through the frame bar.

[0014] Wherein, the light column adjustment mechanism includes a lens assembly, and the lens assembly includes a second connecting piece, the interior of the second connecting piece holds a lens array, the outer surface of the lens array is provided with a frame bar, and the lens array is slidably installed inside the inner groove through the frame bar.

[0015] Among them, the light column adjustment mechanism includes a microlens assembly, and the microlens assembly includes a third connecting piece, the interior of the third connecting piece clamps a microlens array, the outer surface of the microlens array is provided with a frame bar, and the microlens array is slidably installed inside the inner groove through the frame bar.

[0016] Wherein, the radiating mechanism comprises a mirror frame, a convex mirror is arranged inside the mirror frame, and the mirror frame is installed inside the reflective shell.

[0017] In summary, the technical effects and advantages of the present invention are as follows:

[0018] Before the actual measurement begins, the obstacle detection mechanism performs a full rotation check to confirm that no obstacles could impede the laser surveyor's operation. This mechanism assesses the support frame's appropriate position before actual measurement, allowing surveyors to adjust the frame's position or angle based on this feedback to find the optimal measurement point. When measuring in complex environments like forests, traditional measurement methods can be limited by line of sight or difficult-to-reach locations. The obstacle detection mechanism flexibly adapts to diverse terrain conditions, effectively locating and measuring target trees even in dense forests.

[0019] 2. In this invention, the controller propels the push rod to reciprocate, thereby driving the beam adjustment mechanism within the inner groove. This enables real-time changes in the trajectory of the laser beam, allowing the laser beam to form multiple distinct beam paths in a short period of time. This multi-beam, rapidly changing design helps capture more detailed information and enhances the accuracy of identifying targets in complex environments (such as dense forests). The beam adjustment mechanism generates a laser beam trajectory that changes in real time. When the light encounters an obstacle, the receiver receives the signal and processes it to generate a cloud point. Because the beam adjustment mechanism can generate multiple cloud points simultaneously, it can more comprehensively depict the three-dimensional structure of the tree or other object being measured, improving data quality. By continuously adjusting the laser beam trajectory, it can quickly adapt to different environments and provide high-resolution data output.

[0020] 3. The diffraction grating in this invention divides the incident light into beams in multiple directions, increasing the spatial range that can be covered by a single scan. Each beam can independently detect different target points, thereby improving the overall perception of the surrounding environment. The multi-beam design can acquire a large number of data points in a short period of time, enhancing the ability to capture details of complex structures (such as tree branches and leaves), and providing richer measurement information.

[0021] 4. The lens array in the present invention is composed of multiple small lenses, which can split a beam of incident light into many smaller beams, increasing the spatial range that can be covered by a single scan, enabling the system to acquire data points in a wider area. The multi-beam output allows more target points to be detected at the same time, enhancing the ability to capture details of complex structures (such as tree branches and leaves), and providing richer measurement information. The push rod pushes the lens array to slide inside the inner groove, causing the position and angle of the lens array to continuously change, thereby quickly changing the direction of the light beam after refracting each small lens. This dynamic adjustment capability allows the system to flexibly change the scanning mode according to actual needs and adapt to measurement tasks in different scenarios.

[0022] 5. The microlens array in the present invention disperses and refocuses the incident laser beam to form a large, uniformly illuminated illumination area. This ensures that each point in the measurement area receives consistent light intensity, reducing data errors caused by uneven illumination. Uniform illumination helps obtain more accurate reflection signals, especially when measuring on complex or low-reflectivity surfaces (such as bark and leaves), providing more reliable measurement results. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0024] Figure 1 A schematic diagram of the first-person perspective structure of a measuring device for measuring the vertical height of forest carbon sink trees;

[0025] Figure 2 A schematic diagram of the second-perspective stereoscopic structure of a measuring device for measuring the vertical height of forest carbon sink trees;

[0026] Figure 3 Schematic diagram of the third-person perspective stereo connection structure of the measuring equipment for measuring the vertical height of forest carbon sink trees;

[0027] Figure 4 A cross-sectional view of the three-dimensional connection structure of a measuring device for measuring the vertical height of forest carbon sink trees;

[0028] Figure 5 Schematic diagram of the internal three-dimensional connection structure of the measuring equipment for measuring the vertical height of forest carbon sink trees;

[0029] Figure 6 Schematic diagram of the three-dimensional connection structure of the obstacle detection mechanism;

[0030] Figure 7 It is a schematic diagram of the three-dimensional connection structure of the obstacle detection mechanism and the surveying and mapping adjustment mechanism;

[0031] Figure 8 A schematic diagram of the first-person perspective stereoscopic connection structure of the light adjustment mechanism, the mapping adjustment mechanism, and the laser mapping instrument;

[0032] Figure 9 A schematic diagram of the second-viewing angle stereoscopic connection structure of the light adjustment mechanism, the mapping adjustment mechanism, and the laser mapping instrument;

[0033] Figure 10 A schematic diagram of the first-person perspective three-dimensional connection structure of the surveying and mapping adjustment mechanism;

[0034] Figure 11 A schematic diagram of the second-view stereoscopic connection structure of the surveying and mapping adjustment mechanism;

[0035] Figure 12 Schematic diagram of the three-dimensional connection structure of the light adjustment mechanism;

[0036] Figure 13 It is a schematic diagram of the three-dimensional connection structure of the adjustment mechanism and the installation mechanism;

[0037] Figure 14 Schematic diagram of the three-dimensional connection structure of the installation mechanism;

[0038] Figure 15 Schematic diagram of the three-dimensional connection structure of the mounting mechanism and the support plate;

[0039] Figure 16 Schematic diagram of the three-dimensional connection structure of the diffraction component and the adjustment mechanism;

[0040] Figure 17 It is a schematic diagram of the three-dimensional connection structure of the adjustment mechanism and the lens assembly;

[0041] Figure 18 A schematic diagram of the three-dimensional connection structure of the adjustment mechanism and the microlens assembly;

[0042] Figure 19 It is a schematic diagram of the three-dimensional connection structure of the adjustment mechanism;

[0043] Figure 20 Schematic diagram of the three-dimensional connection structure of the diffraction component;

[0044] Figure 21 Schematic diagram of the three-dimensional connection structure of the lens assembly;

[0045] Figure 22 It is a schematic diagram of the three-dimensional connection structure of the radiation mechanism;

[0046] Figure 23 Schematic diagram of the three-dimensional connection structure of the microlens assembly.

[0047] In the figure: 1. Support frame; 2. Rotating chassis; 3. Protective mirror; 4. Mounting cover; 5. Receiver; 6. Obstacle detection mechanism; 61. Driving motor; 62. Protective shell; 63. Obstacle avoidance sensor; 64. Laser generator; 7. Laser mapper; 8. Light adjustment mechanism; 81. Mounting mechanism; 811. Slider; 812. Mounting frame; 813. Arc mirror; 814. Mounting slot; 82. Adjustment mechanism; 821. Controller; 822. Arc block; 823. Push rod; 824. Reflective shell; 825 , inner groove; 83. Radiation mechanism; 831. Mirror frame; 832. Convex mirror; 84. Light column adjustment mechanism; 841. Diffraction component; 8411. First connecting piece; 8412. Diffraction grating; 842. Lens component; 8421. Second connecting piece; 8422. Lens array; 843. Microlens component; 8431. Third connecting piece; 8432. Microlens array; 9. Surveying and mapping adjustment mechanism; 91. Refractive mirror column; 92. Arc plate; 93. Slide groove; 94. Support plate; 10. Control motor. DETAILED DESCRIPTION

[0048] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0049] Example 1, Reference Figures 1 to 23 The device for measuring the vertical height of trees in a forest carbon sink is shown, comprising a support frame 1, a rotating chassis 2 disposed at the upper end of the support frame 1, a mounting cover 4 disposed at the upper end of the rotating chassis 2, a laser mapper 7 disposed within the mounting cover 4, a receiver 5 disposed at the upper end of the laser mapper 7, a mapping adjustment mechanism 9 disposed within the laser mapper 7, a light adjustment mechanism 8 for adjusting the laser beam slidably mounted within the mapping adjustment mechanism 9, an obstacle detection mechanism 6 for detecting surrounding obstacles disposed on one side of the mounting cover 4, and a control motor 10 disposed on one side of the laser mapper 7;

[0050] It is worth noting that when measuring the vertical height of forest carbon sink trees, the support frame 1 is placed on a flat area around the measuring tree, and then the rotating chassis 2 is installed on the upper end of the support frame 1. The rotating chassis 2 is used to provide power to drive the installation cover 4 to rotate, so that the laser mapper 7 can rotate one circle to scan and map the surrounding trees, and the receiver 5 is used to receive the laser signal emitted by the laser mapper 7. When it is necessary to measure the surrounding trees, the rotating chassis 2 drives the installation cover 4 to rotate, and when the installation cover 4 rotates, it will drive the obstacle detection mechanism 6 to rotate. The obstacle detection mechanism 6 is used to detect whether there are trees blocking the surrounding trees before using the laser mapper 7 for detection. First, the obstacle detection mechanism 6 detects whether there are any obstructions around that affect the normal use and measurement of the laser mapper 7 after the rotating chassis 2 rotates one circle. The detection of the obstacle detection mechanism 6 can be displayed by the laser mapper 7 whether the position of the support frame 1 affects the normal use of the laser mapper 7. The surveyor can select a suitable measurement position and angle through the obstacle detection mechanism 6.

[0051] By rotating the chassis 2 and the mounting cover 4, the laser mapper 7 can fully scan and map the surrounding trees, more accurately obtaining tree height data. The obstacle detection mechanism 6 pre-detects the surrounding environment to prevent obstructions from interfering with the measurement process, further improving the accuracy of the measurement results.

[0052] Before starting the formal measurement, the obstacle detection mechanism 6 will first perform a rotation detection to confirm that there are no obstacles that will affect the normal operation of the laser surveying instrument 7. Since the obstacle detection mechanism 6 can evaluate whether the position of the support frame 1 is appropriate before the actual measurement, the surveyor can adjust the position or angle of the support frame according to the feedback information to find the best measurement point.

[0053] When measuring in complex environments such as forests, traditional measurement methods may be limited by line of sight or difficult-to-reach locations. The obstacle detection mechanism 6 can flexibly cope with different terrain conditions and effectively locate and measure target trees even in dense forests.

[0054] The light adjustment mechanism 8 includes an installation mechanism 81 that is slidably installed inside the surveying and mapping adjustment mechanism 9. The installation mechanism 81 is internally provided with an adjustment mechanism 82 for adjusting the laser beam. The adjustment mechanism 82 is internally provided with an emitting mechanism 83 for amplifying the laser beam. The adjustment mechanism 82 is internally provided with a light column adjustment mechanism 84 for adjusting the laser beam irradiation mode according to the detection environment.

[0055] When the obstacle detection mechanism 6 rotates one circle with the rotating chassis 2 and finds a suitable measurement position, the laser surveyor 7 emits light through the internal laser generator through the turning of the surveying and mapping adjustment mechanism 9 and then irradiates. The surveying and mapping adjustment mechanism 9 is driven by the control motor 10 so that the refraction device inside the surveying and mapping adjustment mechanism 9 can adjust the laser beam scanning angle to a maximum of 130°. The rotating chassis 2 drives the mounting cover 4 to rotate 360°, allowing the laser surveyor 7 to scan 360° horizontally and 130° vertically, allowing the laser surveyor 7 to accurately map the surrounding forests and trees. The mounting mechanism 81 can rotate with the angle adjustment of the surveying and mapping adjustment mechanism 9. The light column adjustment mechanism 84 can change the beam and refraction angle of the laser beam. The adjustment mechanism 82 assists the light column adjustment mechanism 84 in adjusting the laser beam refracted by the surveying and mapping adjustment mechanism 9, so that the irradiated laser beam is divided into multiple beams and the beam refraction trajectory is in a constantly changing state. The laser beam adjusted by the light column adjustment mechanism 84 is amplified and emitted by the emission mechanism 83.

[0056] Among them, the light column adjustment mechanism 84 allows the irradiated laser rays to be divided into multiple beams, and the refraction trajectories of these beams are in a constantly changing state, which increases the distribution density of the laser rays in space, thereby improving the accuracy of identifying target objects in complex terrain and dense vegetation structures.

[0057] The emitting mechanism 83 is responsible for amplifying the adjusted laser beam to ensure that a sufficient energy level is maintained even at a long distance to ensure that accuracy is not affected. It is more obvious for measurements at long distances or on low-reflectivity surfaces such as dark bark. The mounting mechanism 81 automatically adjusts its position according to the angle change of the surveying and mapping adjustment mechanism 9 to maintain the consistency and stability of the laser emission direction.

[0058] Embodiment 2: Based on the obstacle detection mechanism 6 proposed in embodiment 1, this embodiment provides a further technical solution for the obstacle detection mechanism 6.

[0059] The obstacle detection mechanism 6 includes a protective shell 62 mounted on one side of the mounting cover 4. A drive motor 61 is provided on one side of the protective shell 62. The output end of the drive motor 61 extends into the interior of the protective shell 62 and is connected to an obstacle avoidance sensor 63. The obstacle avoidance sensor 63 is electrically connected to the laser mapper 7 via a data cable. A laser generator 64 is provided inside the obstacle avoidance sensor 63.

[0060] It is worth noting that when measuring trees, it is necessary to evaluate the measuring position through the obstacle detection mechanism 6 to detect whether there are any obstacles in the surrounding that affect the normal operation of the laser mapper 7. In the process of detecting the surrounding environment, the protective shell 62 is driven to rotate by the installation cover 4, and the protective shell 62 is a transparent protective cover. The driving motor 61 drives the obstacle avoidance sensor 63 to rotate back and forth at a ninety-degree angle through the output shaft, and the laser generator 64 emits laser rays and then the obstacle avoidance sensor 63 is used to receive the light refracted by the laser encountering an obstacle. The obstacle avoidance sensor 63 detects whether there are close-range obstacles around that affect the measurement of the laser mapper 7, and the obstacle avoidance sensor 63 can be fixed at a fixed angle by the driving motor 61, and the angle of irradiation of the laser generator 64 and the signal received by the obstacle avoidance sensor 63 are adjusted by the driving motor 61 to determine whether the position of the surveyor is a suitable measurement position.

[0061] Among them, the driving motor 61 rotates the obstacle avoidance sensor 63 back and forth at an angle of 90 degrees through the output shaft, thereby realizing multi-angle scanning of the surrounding environment. The laser generator 64 emits laser rays to the surroundings. These rays will be reflected back when they encounter obstacles. The obstacle avoidance sensor 63 is responsible for capturing the light reflected by the obstacle and judging whether there is a close-range obstacle that affects the normal operation of the laser mapper 7.

[0062] In order to more accurately assess the obstacle situation in a specific direction, the drive motor 61 can also adjust the irradiation angle of the laser generator 64 to ensure full coverage and accurate detection of obstacles in different directions. By comprehensively analyzing the detection data from multiple angles, it can be determined whether the current position is suitable for the measurement task of the laser surveyor 7. If an obstacle is found, the surveyor will be prompted to reselect the position or adjust the equipment angle.

[0063] A protective mirror 3 is provided inside the mounting cover 4 , and the protective mirror 3 is in a semi-ring shape, and the outer surface of the protective mirror 3 is sprayed with a reflective coating.

[0064] Among them, the protective mirror 3 is used to isolate the danger caused by the external light source to the laser irradiation inside the mounting cover 4, and the protective mirror 3 is set as a quickly detachable device, and the parts inside the mounting cover 4 can be replaced by removing the protective mirror 3.

[0065] The protective mirror 3 provides a transparent protective barrier for the mounting cover 4, effectively isolating the interference caused by external natural light or other artificial light sources, ensuring the stable operation of the internal laser. The presence of the protective mirror 3 also increases the safety of operation, preventing the laser from being directly exposed to the external environment, and avoiding potential damage to human eyes and other sensitive equipment.

[0066] Embodiment 3: Based on the surveying and mapping adjustment mechanism 9 and the light adjustment mechanism 8 proposed in embodiment 1, this embodiment provides a further technical solution for the surveying and mapping adjustment mechanism 9, the installation mechanism 81 and the adjustment mechanism 82.

[0067] The surveying and mapping adjustment mechanism 9 includes two arc plates 92 installed inside the laser surveyor 7. A slide groove 93 is provided inside the two arc plates 92. A refractive mirror column 91 is provided inside the laser surveyor 7, and one end of the refractive mirror column 91 is connected to the output end of the control motor 10. A support plate 94 is provided on the outer surface of the refractive mirror column 91.

[0068] It is worth noting that when in use, the laser surveyor 7 emits a laser beam to illuminate the refracting mirror column 91, and the control motor 10 provided can drive the refracting mirror column 91 to rotate back and forth 130° through the output end, so that the refracting mirror column 91 rotates back and forth to change the angle of the laser beam, so that the angle range of the laser scanning is maximum 130°.

[0069] The mounting mechanism 81 includes a mounting frame 812, and sliders 811 are provided on both sides of the mounting frame 812. The two sliders 811 are slidably installed inside the slide groove 93. The bottom wall of the mounting frame 812 is connected to the support plate 94. Mounting grooves 814 are opened on both sides of the inner wall of the mounting frame 812, and arc mirrors 813 are commonly provided inside the two mounting grooves 814.

[0070] Among them, when the refractive mirror column 91 rotates, it will drive the support plate 94 to rotate, and the support plate 94 will drive the installation frame 812 to rotate. The rotation of the installation frame 812 will drive the slider 811 to slide inside the slide groove 93, and the arc mirror 813 set inside the installation groove 814 is a focusing convex mirror. The convex mirror can focus light and illuminate the light column adjustment mechanism 84. The set light column adjustment mechanism 84 is used to change the laser beam and the ray trajectory.

[0071] The adjustment mechanism 82 includes a reflective shell 824, the inner wall of which is provided with an inner groove 825, arc blocks 822 are provided on both sides of the reflective shell 824, a controller 821 is provided on one side of the reflective shell 824, a push rod 823 is provided inside the controller 821, the reflective shell 824 is set inside the mounting frame 812, and the arc blocks 822 are attached to the surface of the arc plate 92.

[0072] Among them, the controller 821 is capable of pushing the push rod 823 to move back and forth, and the push rod 823 drives the light column adjustment mechanism 84 to move back and forth inside the inner groove 825. By pushing the light column adjustment mechanism 84 to move back and forth, the light trajectory of the laser beam can be changed in real time. When the measured trees are surveyed by using multiple beams of laser beams that change rapidly in real time, after the light encounters an obstacle, the receiver 5 receives the cloud point processed by the signal, and multiple cloud points can be generated at the same time through the light column adjustment mechanism 84, and the trajectory of the laser beam generated by the light column adjustment mechanism 84 changes in real time.

[0073] The control motor 10 drives the refractive mirror column 91 to rotate back and forth, so that the laser beam can scan within an angle range of up to 130°, greatly expanding the spatial area that can be covered by a single scan and reducing the number of times the device needs to be repositioned.

[0074] The reciprocating rotation of the refracting mirror column 91 not only changes the angle of the laser beam, but also ensures its synchronous movement through the linkage mechanism of the support plate 94, the mounting frame 812 and the slider 811, allowing the laser mapper 7 to maintain stability and consistency during the scanning process and improve measurement accuracy.

[0075] The arc mirror 813 arranged inside the mounting groove 814 is a focusing convex mirror, which can gather light and illuminate it onto the light column adjustment mechanism 84 to concentrate energy and enhance the detection capability of the target object, especially at a long distance or on a low reflectivity surface.

[0076] The controller 821 pushes the push rod 823 to move back and forth, thereby driving the light column adjustment mechanism 84 to move inside the inner groove 825, realizing real-time changes in the trajectory of the laser beam, so that the laser beam can form multiple different beam paths in a short period of time. The multi-beam and fast-changing design helps to capture more detailed information and enhances the accuracy of identifying target objects in complex environments such as dense forests.

[0077] The trajectory of the laser beam generated by the light column adjustment mechanism 84 changes in real time. When the light encounters an obstacle, the receiver 5 receives the signal and generates cloud points after processing. Since the light column adjustment mechanism 84 can generate multiple cloud points at the same time, it can more comprehensively depict the three-dimensional structure of the measured trees or other objects, thereby improving the quality of the data. By continuously adjusting the trajectory of the laser beam, it can quickly adapt to different environments and provide high-resolution data output.

[0078] The reflective shell 824 is in a sector shape, and the inner wall of the reflective shell 824 is provided with a reflective coating.

[0079] The radiating mechanism 83 includes a mirror frame 831 , a convex mirror 832 is provided inside the mirror frame 831 , and the mirror frame 831 is installed inside the reflective shell 824 .

[0080] When the light beam adjustment mechanism 84 refracts the light, the light beam passes through the convex mirror 832 . The convex mirror 832 can amplify the light beam refracted by the light beam adjustment mechanism 84 .

[0081] Among them, the laser beam is amplified by the convex mirror 832, which can concentrate the energy, so that a high energy density can be maintained even at a long distance, and the intensity of the reflected signal to the target object is increased, thereby improving the accuracy and reliability of long-distance measurement. For dark or rough surfaces such as bark, the reflectivity is low, and the amplified laser beam can provide stronger energy to ensure that the measurement points on these surfaces can also be effectively detected. The laser beam amplified by the convex mirror 832 usually has better directionality and consistency, reducing interference caused by scattering or other external factors, and ensuring the stability and accuracy of data acquisition.

[0082] Embodiment 4: This embodiment provides a specific technical solution for the diffraction component 841 in the light column adjustment mechanism 84.

[0083] The light column adjustment mechanism 84 includes a diffraction component 841, and the diffraction component 841 includes a first connecting member 8411, which is installed at one end of the push rod 823. The first connecting member 8411 clamps a diffraction grating 8412 inside, and the outer surface of the diffraction grating 8412 is provided with a frame bar, and the diffraction grating 8412 is slidably installed inside the inner groove 825 through the frame bar.

[0084] It is worth noting that when the laser passes through the diffraction grating 8412, the first connecting member 8411 is pushed by the push rod 823 to slide inside the inner groove 825, and the diffraction grating 8412 divides the incident light into light beams in multiple directions through the principles of diffraction and interference, and the diffraction grating 8412 sliding inside the inner groove 825 can quickly change the diffracted light beam.

[0085] The diffraction grating 8412 divides the incident light into beams in multiple directions, increasing the spatial range that can be covered by a single scan. Each beam can independently detect different target points, thereby improving the overall perception of the surrounding environment. The multi-beam design can acquire a large number of data points in a short period of time, enhancing the ability to capture details of complex structures such as tree branches and leaves, and providing richer measurement information.

[0086] The push rod 823 pushes the first connecting member 8411 to slide, so that the diffraction grating 8412 can move quickly inside the inner groove 825, thereby quickly changing the direction of the diffracted light beam, flexibly changing the scanning mode according to actual needs, and adapting to measurement tasks in different scenarios.

[0087] Multi-directional beam distribution helps disperse the impact of external interference sources, ensuring stable performance output even in complex environments. The ability to quickly change the direction of the beam enables the system to complete high-density scanning of large areas in a short period of time, greatly improving the speed and efficiency of data acquisition.

[0088] Embodiment 5: This embodiment provides a specific technical solution for the lens assembly 842 in the light column adjustment mechanism 84.

[0089] The light column adjustment mechanism 84 includes a lens assembly 842, and the lens assembly 842 includes a second connecting member 8421. The interior of the second connecting member 8421 holds a lens array 8422. The outer surface of the lens array 8422 is provided with a frame bar, and the lens array 8422 is slidably installed inside the inner groove 825 through the frame bar.

[0090] It is worth noting that when the laser passes through the lens array 8422, the lens array 8422 is pushed by the push rod 823 to slide inside the inner groove 825. When the light penetrates the lens array 8422, because the lens array 8422 is an array composed of multiple small lenses, it can divide a beam of incident light into many smaller light beams. For example, the Fresnel lens can be designed to have multiple concentric ring structures, each ring can independently refract light, thereby forming multiple outgoing light beams, and as the lens array 8422 slides, the illumination trajectory of the light changes rapidly.

[0091] Among them, the lens array 8422 is composed of multiple small lenses, which can split a beam of incident light into many smaller beams, increasing the spatial range that can be covered by a single scan, enabling the system to obtain data points in a wider area. The multi-beam output allows more target points to be detected at the same time, enhancing the ability to capture details of complex structures such as tree branches and leaves, and providing richer measurement information.

[0092] The push rod 823 pushes the lens array 8422 to slide inside the inner groove 825, causing the position and angle of the lens array to continuously change, thereby rapidly changing the direction of the light beam after refraction by each small lens. This dynamic adjustment capability allows the system to flexibly change the scanning mode according to actual needs and adapt to measurement tasks in different scenarios.

[0093] The design of lens array 8422, with its multiple concentric ring structures, can further optimize the splitting and distribution of the light beam, providing higher energy utilization and better beam quality. Through the segmentation and refocusing of lens array 8422, the energy of each small light beam can be more concentrated, improving the measurement accuracy and image quality of long-distance targets. Better beam management and concentrated energy can reduce interference caused by scattering and other external factors, ensuring the stability and accuracy of data acquisition.

[0094] Embodiment 6. The specific technical solution of the microlens assembly 843 in the light column adjustment mechanism 84 provided in this embodiment.

[0095] The light column adjustment mechanism 84 includes a microlens assembly 843, and the microlens assembly 843 includes a third connecting member 8431. The interior of the third connecting member 8431 clamps a microlens array 8432. The outer surface of the microlens array 8432 is provided with a frame bar, and the microlens array 8432 is slidably installed inside the inner groove 825 through the frame bar.

[0096] It is worth noting that when the laser passes through the microlens array 8432, the microlens array 8432 is pushed by the push rod 823 to slide inside the inner groove 825, and the laser passes through the microlens array 8432. The light emitted by the microlens array 8432 is converted into a large area of ​​uniform illumination.

[0097] Among them, the microlens array 8432 disperses and refocuses the incident laser beam to form a large, evenly illuminated illumination area, ensuring that the light intensity received by each point in the measurement area is consistent, reducing data errors caused by uneven lighting. Uniform lighting helps to obtain more accurate reflection signals, especially when measuring on complex or low-reflectivity surfaces such as bark and leaves, and can provide more reliable measurement results.

[0098] The design of the microlens array 8432 allows a single laser beam to be effectively expanded into a uniform light spot covering a large area, thereby increasing the spatial range that can be covered by each scan. Whether measuring a single tree or a larger forest area, the position of the microlens array 8432 is adjusted to optimize the lighting coverage to meet diverse measurement needs. Uniform lighting conditions help capture more detailed information, especially for objects with complex structures such as tree branches and leaves, enabling a clearer depiction of their three-dimensional structure and providing higher measurement resolution.

[0099] Large-area uniform illumination can reduce data loss caused by local shadows or occlusions, ensuring data integrity throughout the entire measurement area.

[0100] Because a single scan can cover a larger area and achieve a uniform lighting effect, high-density scanning of large areas can be completed in a short period of time, greatly improving the speed and efficiency of data acquisition. The design of the microlens array 8432 allows each small lens to independently process light, forming a uniformly distributed light spot, which improves the flexibility of beam management.

[0101] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A measuring device for measuring the vertical height of forest carbon sink trees, comprising a support frame (1), characterized in that: The upper end of the support frame (1) is provided with a rotating chassis (2), the upper end of the rotating chassis (2) is provided with a mounting cover (4), a laser mapper (7) is provided inside the mounting cover (4), a receiver (5) is provided at the upper end of the laser mapper (7), a mapping adjustment mechanism (9) is provided inside the laser mapper (7), a light adjustment mechanism (8) for adjusting laser rays is slidably installed inside the mapping adjustment mechanism (9), an obstacle detection mechanism (6) for detecting surrounding obstacles is provided on one side of the mounting cover (4), and a control motor (10) is provided on one side of the laser mapper (7); The light adjustment mechanism (8) includes a mounting mechanism (81) slidably mounted inside the surveying and mapping adjustment mechanism (9), an adjustment mechanism (82) for adjusting the laser beam is provided inside the mounting mechanism (81), an irradiation mechanism (83) for amplifying the laser beam is provided inside the adjustment mechanism (82), and a light column adjustment mechanism (84) for adjusting the laser beam irradiation mode according to the detection environment is provided inside the adjustment mechanism (82); The surveying and mapping adjustment mechanism (9) comprises two arc plates (92) installed inside the laser surveying instrument (7), and a slide groove (93) is provided inside the two arc plates (92). A refraction mirror column (91) is provided inside the laser surveying instrument (7), and one end of the refraction mirror column (91) is connected to the output end of the control motor (10). A support plate (94) is provided on the outer surface of the refraction mirror column (91); The mounting mechanism (81) includes a mounting frame (812), and sliders (811) are provided on both sides of the mounting frame (812). The two sliders (811) are slidably mounted inside the slide groove (93). The bottom wall of the mounting frame (812) is connected to the support plate (94). Mounting grooves (814) are provided on both sides of the inner wall of the mounting frame (812), and arc mirrors (813) are commonly provided inside the two mounting grooves (814). The adjustment mechanism (82) includes a reflective shell (824), an inner groove (825) is provided on the inner wall of the reflective shell (824), arc blocks (822) are provided on both sides of the reflective shell (824), a controller (821) is provided on one side of the reflective shell (824), a push rod (823) is provided inside the controller (821), the reflective shell (824) is arranged inside the installation frame (812), and the arc blocks (822) are attached to the surface of the arc plate (92).

2. The measuring device for measuring the vertical height of forest carbon sink trees according to claim 1, characterized in that: The obstacle detection mechanism (6) includes a protective shell (62) installed on one side of the mounting cover (4); a driving motor (61) is provided on one side of the protective shell (62); an output end of the driving motor (61) extends to the interior of the protective shell (62) and is connected to an obstacle avoidance sensor (63); the obstacle avoidance sensor (63) is electrically connected to the laser mapper (7) via a data line; a laser generator (64) is provided inside the obstacle avoidance sensor (63); A protective mirror (3) is provided inside the mounting cover (4), and the protective mirror (3) is in a semi-ring shape, and the outer surface of the protective mirror (3) is sprayed with a reflective coating.

3. The measuring device for measuring the vertical height of forest carbon sink trees according to claim 1, characterized in that: The reflective shell (824) is in a sector shape, and the inner wall of the reflective shell (824) is provided with a reflective coating.

4. The measuring device for measuring the vertical height of forest carbon sink trees according to claim 3, characterized in that: The light column adjustment mechanism (84) includes a diffraction component (841), and the diffraction component (841) includes a first connecting member (8411), the first connecting member (8411) is installed at one end of the push rod (823), the interior of the first connecting member (8411) clamps a diffraction grating (8412), the outer surface of the diffraction grating (8412) is provided with a frame bar, and the diffraction grating (8412) is slidably installed in the interior of the inner groove (825) through the frame bar.

5. The measuring device for measuring the vertical height of forest carbon sink trees according to claim 4, characterized in that: The light column adjustment mechanism (84) includes a lens assembly (842), and the lens assembly (842) includes a second connecting member (8421), the interior of the second connecting member (8421) holds a lens array (8422), the outer surface of the lens array (8422) is provided with a frame strip, and the lens array (8422) is slidably installed inside the inner groove (825) through the frame strip.

6. The measuring device for measuring the vertical height of forest carbon sink trees according to claim 5, characterized in that: The light column adjustment mechanism (84) includes a microlens assembly (843), and the microlens assembly (843) includes a third connecting member (8431). The interior of the third connecting member (8431) holds a microlens array (8432). The outer surface of the microlens array (8432) is provided with a frame bar, and the microlens array (8432) is slidably installed in the interior of the inner groove (825) through the frame bar.

7. The measuring device for measuring the vertical height of forest carbon sink trees according to claim 1, characterized in that: The radiating mechanism (83) comprises a mirror frame (831), a convex mirror (832) is provided inside the mirror frame (831), and the mirror frame (831) is installed inside the reflective shell (824).

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