Long-range automatic evidence obtaining over-the-horizon multi-rotor unmanned aerial vehicle for comprehensive monitoring and general survey of wet forest grass
By designing adjustment and buffer mechanisms, the problem of insufficient flight attitude control of UAVs in forest, grassland, wetland and barren areas has been solved, enabling flexible flight and stable landing, and improving monitoring efficiency and equipment lifespan.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 云南省林业调查规划院(云南省森林和草原资源监测中心、云南省自然保护地研究监测中心)
- Filing Date
- 2025-06-12
- Publication Date
- 2026-04-21
AI Technical Summary
Existing drones used for monitoring forests, grasslands, and wetlands have shortcomings in flight attitude control and cannot flexibly adjust to adapt to complex terrain and airflow changes.
A long-range automated evidence collection beyond-visual-range multi-rotor UAV was designed, equipped with an adjustment mechanism and a buffer mechanism. The adjustment mechanism drives the blades to adjust their attitude in multiple directions through multiple motors, and the buffer mechanism absorbs the impact force during landing. The monitoring and evidence collection mechanism includes a variety of sensors and cameras to achieve comprehensive monitoring.
It enables flexible flight attitude control and stable landing of UAVs in complex environments, improving the efficiency and scope of monitoring and surveying, and extending the service life of UAVs.
Smart Images

Figure CN224146188U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of unmanned aerial vehicle (UAV) technology, specifically a long-range automated evidence collection beyond-line-of-sight multi-rotor UAV for comprehensive monitoring and surveying of forests, grasslands, wetlands, and deserts. Background Technology
[0002] A multi-rotor drone is a special type of unmanned helicopter with three or more rotor shafts. Each shaft is powered by an electric motor that drives the rotors, generating thrust. Unlike conventional helicopters, the collective pitch of the rotors is fixed. By changing the relative speeds between the different rotors, the thrust per shaft can be altered, thus controlling the aircraft's trajectory.
[0003] With the continuous development of drone technology, drones are gradually being used in the field of monitoring. However, existing drones used for monitoring forests, grasslands and wetlands have obvious shortcomings in flight attitude control. Most drones can only achieve relatively simple flight attitude adjustments and cannot make flexible attitude and direction adjustments according to complex terrain undulations and airflow changes. Utility Model Content
[0004] The purpose of this invention is to provide a long-range automated evidence collection beyond-line-of-sight multi-rotor UAV for comprehensive monitoring and survey of forests, grasslands, wetlands, and deserts, in order to solve the problems mentioned in the background art.
[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a long-range automated evidence collection beyond-line-of-sight multi-rotor UAV for comprehensive monitoring and survey of forests, grasslands and wetlands, including a UAV body, an adjustment mechanism is provided around the UAV body, and a buffer mechanism is provided at the bottom of the UAV body.
[0006] The drone body is fixedly connected to brackets at all four corners, and a monitoring and evidence collection mechanism is installed at the bottom of the drone body.
[0007] The adjustment mechanism includes a first mounting block and a second mounting block. A first motor is fixedly connected to the top of the first mounting block, and a first rotating rod is rotatably connected to the second mounting block. A first connecting ring is fixedly connected to the output end of the first motor. A second motor is fixedly connected to the left side of the first connecting ring, and a second rotating rod is rotatably connected to the right side of the first connecting ring. A second connecting ring is fixedly connected to the output end of the second motor. A support block is fixedly connected to the bottom of the second connecting ring. A connecting block is fixedly connected to the end of the support block away from the second connecting ring. A third motor is fixedly connected to the top of the connecting block. A connecting rod is fixedly connected to the output end of the third motor, and a blade is fixedly connected to the outer side of the connecting rod.
[0008] Preferably, the monitoring and evidence collection mechanism includes a control device, a main sensor, a visible light 4K camera, a multispectral camera, a lidar, and a thermal imager.
[0009] Furthermore, the monitoring and evidence collection agency includes a control device for controlling and coordinating the entire monitoring and evidence collection process. The main sensor, as the core sensing component, can collect various environmental data. The visible light 4K camera can provide high-definition visible light images, facilitating intuitive observation of the target area. The multispectral camera can acquire image information in different spectral bands, which helps to analyze the spectral characteristics of targets such as vegetation. The lidar can accurately measure distance and terrain data, providing support for building 3D models. The thermal imager can detect the thermal radiation of the target and can work effectively at night or in low light conditions. These devices work together to achieve the evidence collection function in the comprehensive monitoring and survey of forests, grasslands, wetlands, and deserts.
[0010] Preferably, there are eight of each of the first and second mounting blocks, and the eight first and second mounting blocks are respectively fixedly connected to the top of the four brackets.
[0011] Furthermore, there are eight first mounting blocks and eight second mounting blocks, and these eight mounting blocks are fixedly installed on the top of the four brackets of the UAV body. This is to rationally arrange the adjustment mechanism and ensure that the relevant components of the adjustment mechanism can be stably installed on each bracket to meet the needs of blade attitude adjustment during UAV flight and ensure flight stability and flexibility.
[0012] Preferably, the end of the first rotating rod away from the second mounting block is fixedly connected to the front end of the first connecting ring, and the end of the second rotating rod away from the first connecting ring is fixedly connected to the right side of the second connecting ring.
[0013] Furthermore, one end of the first rotating rod is rotatably connected to the second mounting block, and the other end is fixedly connected to the front end of the first connecting ring. One end of the second rotating rod is rotatably connected to the first connecting ring, and the other end is fixedly connected to the right side of the second connecting ring. This connection method allows the first connecting ring to rotate around the first rotating rod under the drive of the first motor, and the second connecting ring to rotate around the second rotating rod under the drive of the second motor, thereby realizing the attitude adjustment of the blade in multiple directions to adapt to different flight states and environmental requirements.
[0014] Preferably, there are multiple support blocks and multiple blades, and the multiple blades are arranged in a cylindrical array outside the connecting rod.
[0015] Furthermore, multiple support blocks and blades are provided. Multiple support blocks are used to connect and support related components to ensure the structural stability of the adjustment mechanism. Multiple blades are distributed in a cylindrical array on the outside of the connecting rod. This distribution method enables the blades to generate uniform lift when rotating, improving the flight efficiency and stability of the UAV, and also helps to achieve more precise flight attitude control.
[0016] Preferably, the buffer mechanism includes a telescopic sleeve, a telescopic rod is movably connected to the bottom of the telescopic sleeve, an anti-slip block is fixedly connected to the end of the telescopic rod away from the telescopic sleeve, and a spring is sleeved on the outside of the telescopic rod.
[0017] Preferably, four telescopic sleeves, four telescopic rods, four anti-slip blocks, and four springs are provided. The four telescopic sleeves are fixedly connected to the four corners of the bottom of the UAV body, one end of each of the four springs is fixedly connected to the bottom of the telescopic sleeve, and the other end of each of the four springs is fixedly connected to the top of the four anti-slip blocks.
[0018] Furthermore, there are four telescopic sleeves, four telescopic rods, four anti-slip blocks, and four springs. The four telescopic sleeves are fixedly installed on the four corners of the bottom of the drone body. One end of each of the four springs is fixedly connected to the bottom of the telescopic sleeve, and the other end is fixedly connected to the top of the corresponding anti-slip block. This allows the four buffer mechanisms to evenly bear the impact force when the drone lands, providing a stable buffering effect. At the same time, the four anti-slip blocks can also ensure the stability of the drone on the ground and prevent the drone from tipping over or sliding.
[0019] Compared with the prior art, the beneficial effects achieved by this utility model are:
[0020] First, the drone body of this utility model is the core platform of the entire device. The brackets fixed at the four corners provide a basic support structure. In use, the drone is placed in a suitable takeoff area and started via remote control or a preset flight program. The monitoring and evidence collection mechanism at the bottom of the drone body begins to work, conducting flight monitoring and surveys in areas such as forests, grasslands, wetlands, and wastelands according to a preset flight route or manual control commands. The drone body, as the basic platform, provides installation positions for other mechanisms, ensuring the stable operation of the entire drone system. It facilitates the mounting of various monitoring and evidence collection equipment, enabling long-range automated evidence collection beyond visual line of sight, greatly improving the efficiency and scope of monitoring and surveys. Adjustment mechanisms are distributed around the drone body. Each adjustment mechanism consists of multiple components. The first and second mounting blocks are fixed to the top of the bracket. After the first motor starts, it drives the first connection to rotate around the first rotating rod, adjusting the blade angle in the horizontal direction. The second motor starts, driving the second connection to rotate around the second rotating rod, further adjusting the blade angle. Third... The motor starts, driving the connecting rod and blades to rotate, generating lift. Through the coordinated work of these three motors, precise control of the UAV's flight attitude and direction is achieved. The monitoring and evidence collection mechanism is installed on the bottom of the UAV body, including a control device, main sensor, visible light K camera, multispectral camera, lidar, and thermal imager. During the UAV's flight, the control device coordinates the work of each device. The visible light K camera is used to capture high-definition visible light images, the multispectral camera is used to acquire spectral information in different bands, the lidar is used to measure distance and terrain data, and the thermal imager is used to detect the thermal radiation signal of objects. These devices transmit the collected data back to the control device, which processes and stores or transmits it in real time and connects it to the forest, grassland, wetland, and desert integrated monitoring and survey system. This allows for the simultaneous collection and export of evidence from multiple patches. Through the cooperation of the three motors, multi-degree-of-freedom adjustment of the blades can be achieved, enabling the UAV to flexibly adjust its attitude and direction during flight and adapt to complex flight environments, such as the terrain undulations and airflow changes in forest, grassland, wetland, and desert areas.
[0021] Secondly, the buffer mechanism of this utility model is installed at the four corners of the bottom of the drone body and consists of a telescopic sleeve, a telescopic rod, an anti-slip block and a spring. When the drone lands, the anti-slip block contacts the ground first, the telescopic rod slides in the telescopic sleeve, and the spring is compressed at the same time to absorb the impact force during landing and play a buffering role. It can effectively reduce the impact force on the drone during landing, reduce the risk of damage to the drone, and extend its service life. Attached Figure Description
[0022] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0023] Figure 2 This is a three-dimensional structural diagram of the present invention;
[0024] Figure 3 This is a schematic cross-sectional view of the present invention.
[0025] Figure 4 This is a schematic diagram of the adjustment mechanism of this utility model.
[0026] The components include: 1. UAV body; 101. Support frame; 102. Monitoring and evidence collection mechanism; 2. Adjustment mechanism; 201. First mounting block; 202. Second mounting block; 203. First motor; 204. First rotating rod; 205. First connecting ring; 206. Second motor; 207. Second rotating rod; 208. Second connecting ring; 209. Support block; 210. Connecting block; 211. Third motor; 212. Connecting rod; 213. Blade; 3. Buffer mechanism; 301. Telescopic sleeve; 302. Telescopic rod; 303. Anti-slip block; 304. Spring. Detailed Implementation
[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0028] This utility model provides the following technical solution:
[0029] Example 1
[0030] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 A long-range automated evidence collection beyond-line-of-sight multi-rotor UAV for comprehensive monitoring and survey of forests, grasslands and wetlands includes a UAV body 1, an adjustment mechanism 2 is provided around the UAV body 1, and a buffer mechanism 3 is provided at the bottom of the UAV body 1.
[0031] The four corners of the drone body 1 are fixedly connected to brackets 101, and a monitoring and evidence collection mechanism 102 is installed at the bottom of the drone body 1.
[0032] The adjustment mechanism 2 includes a first mounting block 201 and a second mounting block 202. A first motor 203 is fixedly connected to the top of the first mounting block 201. A first rotating rod 204 is rotatably connected to the second mounting block 202. A first connecting ring 205 is fixedly connected to the output end of the first motor 203. A second motor 206 is fixedly connected to the left side of the first connecting ring 205. A second rotating rod 207 is rotatably connected to the right side of the first connecting ring 205. A second connecting ring 208 is fixedly connected to the output end of the second motor 206. A support block 209 is fixedly connected to the bottom of the second connecting ring 208. A connecting block 210 is fixedly connected to the end of the support block 209 away from the second connecting ring 208. A third motor 211 is fixedly connected to the top of the connecting block 210. A connecting rod 212 is fixedly connected to the output end of the third motor 211. A blade 213 is fixedly connected to the outside of the connecting rod 212.
[0033] Specifically, the monitoring and evidence collection agency 102 includes a control device, a main sensor, a visible light 4K camera, a multispectral camera, a lidar, and a thermal imager.
[0034] Specifically, there are eight first mounting blocks 201 and eight second mounting blocks 202, and the eight first mounting blocks 201 and eight second mounting blocks 202 are respectively fixedly connected to the top of the four brackets 101.
[0035] Specifically, the end of the first rotating rod 204 away from the second mounting block 202 is fixedly connected to the front end of the first connecting ring 205, and the end of the second rotating rod 207 away from the first connecting ring 205 is fixedly connected to the right side of the second connecting ring 208.
[0036] Specifically, multiple support blocks 209 are provided, multiple blades 213 are provided, and the multiple blades 213 are located outside the connecting rod 212 in a cylindrical array.
[0037] Through the above technical solution, the drone body 1 is the core platform of the entire device, and the brackets 101 fixed at the four corners provide its basic support structure. In use, the drone is placed in a suitable takeoff site and started via remote control or a preset flight program. The monitoring and evidence collection mechanism 102 at the bottom of the drone body 1 begins operation, conducting flight monitoring and surveys in areas such as forests, grasslands, wetlands, and wastelands according to a preset flight route or manual control commands. The drone body 1, as the basic platform, provides installation locations for other mechanisms, ensuring the stable operation of the entire drone system and facilitating the mounting of various monitoring and evidence collection equipment for long-range deployment. Automated evidence collection beyond visual line of sight flight greatly improves the efficiency and scope of monitoring and surveying. Adjustment mechanisms 2 are distributed around the UAV body 1. Each adjustment mechanism 2 consists of multiple components. The first mounting block 201 and the second mounting block 202 are fixed to the top of the bracket 101. After the first motor 203 starts, it drives the first connecting ring 205 to rotate around the first rotating rod 204, realizing the horizontal angle adjustment of the blade 213. The second motor 206 starts, driving the second connecting ring 208 to rotate around the second rotating rod 207, further adjusting the angle of the blade 213. The third motor 211 starts, driving the connecting rod 212 and the blade 21... 3. Rotation generates lift. Through the coordinated work of these three motors, precise control of the drone's flight attitude and direction is achieved. The internal wiring connections of the drone body 1, control device, main sensor, visible light 4K camera, multispectral camera, lidar, and thermal imager are all existing technologies known to those skilled in the art and will not be elaborated upon here. The monitoring and evidence collection mechanism 102 is installed at the bottom of the drone body 1 and includes a control device, main sensor, visible light 4K camera, multispectral camera, lidar, and thermal imager. During the drone's flight, the control device coordinates the work of each device. The visible light 4K camera is used to capture high-definition images. Visible light images of varying degrees; multispectral cameras to acquire spectral information in different bands; lidar for measuring distance and terrain data; thermal imagers for detecting the thermal radiation of objects. These devices transmit the collected data back to the control unit, where it is processed and stored or transmitted in real time and connected to the integrated monitoring and survey system for forests, grasslands, wetlands, and deserts. This allows for the simultaneous collection and export of evidence from multiple map patches. Through the cooperation of three motors, the system enables multi-degree-of-freedom adjustment of the 213 blades, allowing the UAV to flexibly adjust its attitude and direction during flight, adapting to complex flight environments such as terrain undulations and airflow changes in forest, grassland, wetland, and desert areas.
[0038] Example 2
[0039] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4Furthermore, based on Embodiment 1, the buffer mechanism 3 includes a telescopic sleeve 301, a telescopic rod 302 is movably connected to the bottom of the telescopic sleeve 301, an anti-slip block 303 is fixedly connected to the end of the telescopic rod 302 away from the telescopic sleeve 301, and a spring 304 is sleeved on the outside of the telescopic rod 302.
[0040] Specifically, there are four telescopic sleeves 301, telescopic rods 302, anti-slip blocks 303, and springs 304. The four telescopic sleeves 301 are fixedly connected to the four corners of the bottom of the UAV body 1. One end of each of the four springs 304 is fixedly connected to the bottom of the telescopic sleeve 301, and the other end of each of the four springs 304 is fixedly connected to the top of the four anti-slip blocks 303.
[0041] Through the above technical solution, the buffer mechanism 3 is installed at the four corners of the bottom of the UAV body 1, and is composed of telescopic sleeve 301, telescopic rod 302, anti-slip block 303 and spring 304. When the UAV lands, the anti-slip block 303 contacts the ground first, the telescopic rod 302 slides in the telescopic sleeve 301, and the spring 304 is compressed at the same time to absorb the impact force during landing and play a buffering role. This can effectively reduce the impact force on the UAV during landing, reduce the risk of damage to the UAV, and extend its service life.
[0042] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations may be made to these embodiments without departing from the principles and spirit, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A long-range automated evidence collection beyond-line-of-sight multirotor unmanned aerial vehicle (UAV) for comprehensive monitoring and surveying of forests, grasslands, and wetlands, comprising the UAV body (1), characterized in that: The drone body (1) is equipped with adjustment mechanisms (2) on all four sides, and a buffer mechanism (3) is provided at the bottom of the drone body (1); The four corners of the UAV body (1) are fixedly connected with brackets (101), and a monitoring and evidence collection mechanism (102) is installed at the bottom of the UAV body (1). The adjustment mechanism (2) includes a first mounting block (201) and a second mounting block (202). A first motor (203) is fixedly connected to the top of the first mounting block (201). A first rotating rod (204) is rotatably connected to the second mounting block (202). A first connecting ring (205) is fixedly connected to the output end of the first motor (203). A second motor (206) is fixedly connected to the left side of the first connecting ring (205). A second rotating rod (207) is rotatably connected to the right side of the first connecting ring (205). The output end of the second motor (206) is fixedly connected to a second connecting ring (208), the bottom of the second connecting ring (208) is fixedly connected to a support block (209), the end of the support block (209) away from the second connecting ring (208) is fixedly connected to a connecting block (210), the top of the connecting block (210) is fixedly connected to a third motor (211), the output end of the third motor (211) is fixedly connected to a connecting rod (212), and the outside of the connecting rod (212) is fixedly connected to a blade (213).
2. The long-range automated forensics over-the-horizon multi-copter unmanned aerial vehicle for general survey of forest and grassland wet wasteland according to claim 1, characterized in that: The monitoring and evidence collection device (102) includes a control device, a main sensor, a visible light 4K camera, a multispectral camera, a lidar and a thermal imager.
3. The long-range automated forensics over-the-horizon multi-copter unmanned aerial vehicle for general survey of forest and grassland wetlands according to claim 1, characterized in that: There are eight of each of the first mounting block (201) and the second mounting block (202), and the eight first mounting blocks (201) and the eight second mounting blocks (202) are respectively fixedly connected to the top of the four brackets (101).
4. The long-range automated forensics over-the-horizon multi-copter unmanned aerial vehicle for general survey of forest and grassland wetlands according to claim 1, characterized in that: The end of the first rotating rod (204) away from the second mounting block (202) is fixedly connected to the front end of the first connecting ring (205), and the end of the second rotating rod (207) away from the first connecting ring (205) is fixedly connected to the right side of the second connecting ring (208).
5. The long-range automated forensics over-the-horizon multi-copter unmanned aerial vehicle for general survey of forest and grassland wetlands according to claim 1, characterized in that: Multiple support blocks (209) are provided, and multiple blades (213) are provided, with the multiple blades (213) arranged in a cylindrical array outside the connecting rod (212).
6. The long-range automated forensics over-the-horizon multi-copter unmanned aerial vehicle for general survey of forest and grassland wetlands according to claim 1, characterized in that: The buffer mechanism (3) includes a telescopic sleeve (301), a telescopic rod (302) is movably connected to the bottom of the telescopic sleeve (301), an anti-slip block (303) is fixedly connected to the end of the telescopic rod (302) away from the telescopic sleeve (301), and a spring (304) is sleeved on the outside of the telescopic rod (302).
7. The long-range automated forensics over-the-horizon multi-copter unmanned aerial vehicle for general survey of forest and grassland wetlands according to claim 6, characterized in that: The telescopic sleeve (301), telescopic rod (302), anti-slip block (303), and spring (304) are provided in four units. The four telescopic sleeves (301) are fixedly connected to the four corners of the bottom of the UAV body (1). One end of each of the four springs (304) is fixedly connected to the bottom of the telescopic sleeve (301), and the other end of each spring (304) is fixedly connected to the top of the four anti-slip blocks (303).