Unmanned aerial vehicle for collecting blue carbon in mangrove forest

Abstract

The invention belongs to the technical field of sewage treatment, and comprises an unmanned aerial vehicle main body and a sampler, the unmanned aerial vehicle main body comprises a control core and paddles, the paddles are uniformly distributed around the control core, the sampler is arranged in the middle of the control core in a penetrating manner, a first through hole is formed in the middle of the control core, and a plurality of driving motors are arranged at the upper end of the control core; a spindle of the driving motor is connected with a lead screw rotating shaft, the lead screw rotating shaft partially penetrates through the hole wall of the first through hole, the sampler is sleeved with the first through hole, a threaded structure is arranged on the surface of the sampler, and the driving motor can drive the sampler to move up and down in the first through hole. The method has the advantages that the mangrove forest generally grows at the shoreline mud flat, so that sampling personnel are difficult to enter for sampling on site. Mangrove forest branches and leaves grow densely, and satellite remote sensing acquisition is not accurate. Through the combination of the sampler and the unmanned aerial vehicle, the situation that acquisition personnel actually enter the deep part of the mangrove forest for acquisition can be simulated. The method is not influenced by landforms and growth environments.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of unmanned aerial vehicles, and particularly relates to a red mangrove blue carbon collection unmanned aerial vehicle. BACKGROUND

[0002] As a typical coastal wetland ecosystem, mangrove is known as the core carrier of the "blue carbon" library due to its extremely high carbon sequestration efficiency. Studies have shown that the carbon storage per unit area of the mangrove ecosystem is 10-20 times that of terrestrial forests. The carbon sequestration process mainly absorbs carbon dioxide in the atmosphere through plant photosynthesis and stores carbon in the form of vegetation biomass, litter, and soil organic carbon for a long time, playing an irreplaceable role in addressing global climate change and mitigating the greenhouse effect. Therefore, accurately monitoring and collecting carbon storage data of mangroves has important scientific significance and application value for assessing the value of blue carbon ecosystem services, developing carbon sink trading mechanisms, and implementing ecological protection policies.

[0003] Currently, the collection and monitoring of mangrove blue carbon mainly rely on traditional ground surveys, satellite remote sensing, and manned aircraft observations. These methods have significant limitations in practical applications.

[0004] Ground survey method: By laying out sample plots, collecting vegetation samples and soil profiles, and combining laboratory analysis to obtain carbon storage data. Although this method can provide high-precision local data, it has low efficiency and limited coverage. Moreover, the intertidal zone of mangrove areas is muddy and complex, making it difficult for personnel to enter, which not only causes human disturbance and damage to the ecosystem, but also poses safety risks. At the same time, ground surveys cannot achieve large-scale and periodic dynamic monitoring, and cannot timely reflect the spatio-temporal changes of the mangrove carbon pool.

[0005] Satellite remote sensing technology: Using the spectral characteristics of satellite images to retrieve vegetation coverage, biomass, and other parameters of mangroves, and then estimating carbon storage. Although this technology can achieve large-scale monitoring, it has low data accuracy due to limitations such as spatial resolution (high-resolution data with a resolution better than 10 meters is costly), cloud cover, and tidal interference. It is particularly difficult to distinguish the carbon sink differences of different mangrove community types (such as Avicennia marina and Kandelia candel), and it cannot directly obtain key underground carbon pool data such as soil organic carbon.

[0006] Most methods only focus on the estimation of aboveground carbon storage of vegetation, ignoring the large underground root system and carbon storage in sediments unique to mangroves, resulting in significant bias in total carbon sink estimation. At the same time, traditional monitoring methods cannot achieve high-frequency dynamic tracking, and cannot timely capture the changes in the carbon pool caused by climate change and human activities (such as reclamation and pollution), which restricts the timeliness and accuracy of blue carbon management decisions. SUMMARY

[0007] To solve the problems presented in the background art, the present application provides a kind of unmanned aerial vehicle for mangrove blue carbon collection, can be aimed at mangrove ecological environment, to soil and its root system carries out sampling, by the sample collected, can more accurately analyze and calculate the carbon storage of mangrove root system.

[0008] To achieve the above object, the present application provides the following technical scheme: including unmanned aerial vehicle main body and sampler, unmanned aerial vehicle main body includes control core and paddle wing, paddle wing is evenly distributed on the four around control core, sampler is arranged in the middle of control core, the middle of control core is equipped with first through hole, the upper end of control core is equipped with a plurality of drive motors, drive motor main shaft is connected with screw rod shaft, screw rod shaft is partially penetrated in the hole wall of first through hole, sampler is set in first through hole, the surface of sampler is equipped with screw thread structure, drive motor can drive sampler to move up and down in first through hole.

[0009] Preferably, the bottom of the first through hole of the control core is provided with a rubber baffle, and the rubber baffle is composed of a plurality of rubber sheets, when the sampler penetrates the first through hole, the plurality of rubber sheets are opened, when the sampler is recycled into the first through hole, the plurality of rubber sheets are closed.

[0010] Preferably, the bottom of the control core is provided with a plurality of thread groove scrapers, and the distance between the cutting edges of the thread groove scrapers and the center of the first through hole is different.

[0011] Preferably, the bottom of the control core is provided with a plurality of thread groove scrapers, and the distance between the cutting edges of the thread groove scrapers and the center of the first through hole is different.

[0012] Preferably, the bottom of the control core is provided with a plurality of thread groove scrapers, and the distance between the cutting edges of the thread groove scrapers and the center of the first through hole is different.

[0013] Preferably, the unmanned aerial vehicle main body is further provided with a battery module, and the battery module is arranged on the periphery of the control core, and the battery module is electrically connected with the drive motor and the paddle wing respectively.

[0014] Preferably, the bottom of the sampler is provided with a toothed structure, and the edge of the toothed structure is provided with a cutting edge.

[0015] Preferably, the inner wall of the sampler is provided with a plurality of rfid tags arranged at equal intervals, the hole wall of the first through hole of the control core is provided with a reader for reading the information of the rfid tags, the rfid tags are provided with unique numbers Tag1, Tag2, Tag3……TagN from top to bottom, and the distance between the adjacent two rfid tags is 5-10cm.

[0016] Compared with the prior art, the present application has the following advantages: 1. As mangrove forests generally grow in coastal intertidal areas, it is difficult for sampling personnel to collect samples on site. Mangrove branches and leaves grow densely, and satellite remote sensing collection is also inaccurate. Through the combination of the sampler and the unmanned aerial vehicle, the collector can simulate the real entry of the collector into the deep mangrove forest for collection. It is not affected by the topography, landform and growth environment.

[0017] 2. Existing blue carbon value determination is generally limited to tree trunks and branches, but the root system of mangrove forests is particularly developed, and the carbon storage of the root system needs to be further calculated, otherwise the error of the calculation of the carbon storage of the mangrove forest is too large. Through the combination of the unmanned aerial vehicle and the sampler, the relative accurate value of the soil and root system carbon storage of the mangrove forest can be effectively obtained.

[0018] 3. By setting an rfid tag in the sampler, the rising and falling of the sampler can be quantitatively controlled, so that the conditions at different depths of the deep soil can be obtained, and the soil can be analyzed and calculated layer by layer. BRIEF DESCRIPTION OF DRAWINGS

[0019] The accompanying drawings are used to provide a further understanding of the present application, and constitute a part of the specification, together with the embodiments of the present application, to explain the present application, and do not constitute a limitation on the present application. In the drawings: Figure 1 is a bottom structure diagram of the present application; Figure 2 is a side structure diagram of the present application; Figure 3 is a structure diagram of the control core in the present application; Figure 4 is a bottom structure diagram of the control core in the present application; Figure 5 is a structure diagram of the control core and the sampler in the present application; Figure 6 is a structure diagram of the sampler in the present application.

[0020] In the drawings: 1, control core; 2, paddle wing; 3, floating seat; 4, connecting rod; 5, base; 6, annular air bag; 7, screw shaft; 8, first through hole; 9, thread groove scraper; 10, rubber baffle; 11, driving motor; 12, sampler; 13, toothed structure; 14, battery module. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0022] Referring to Figures 1-6 The present application provides the following technical solutions: a mangrove forest blue carbon collection unmanned aerial vehicle, comprising an unmanned aerial vehicle main body and a sampler, the unmanned aerial vehicle main body comprising a control core and a wing, the wing being evenly distributed around the control core, the sampler being disposed through the middle of the control core, the middle of the control core being provided with a first through hole, the upper end of the control core being provided with a plurality of drive motors, the drive motor main shaft being connected to a lead screw shaft, the lead screw shaft being partially disposed through the first through hole wall, the sampler being disposed in the first through hole, the surface of the sampler being provided with a threaded structure, the drive motor being capable of driving the sampler to move up and down in the first through hole. The bottom of the first through hole of the control core is provided with a rubber baffle, the rubber baffle being composed of a plurality of rubber sheets, when the sampler penetrates the first through hole, the plurality of rubber sheets are opened, when the sampler is recovered into the first through hole, the plurality of rubber sheets are closed. The bottom of the control core is provided with a plurality of threaded groove scrapers, the cutting edges of the threaded groove scrapers being different distances from the center of the first through hole. The unmanned aerial vehicle main body is also provided with a floating seat, the floating seat being connected to the control core through a connecting rod. The floating seat comprises a support and a ring-shaped air bag, one end of the connecting rod being connected to the control core, the other end being connected to the support, the ring-shaped air bag being disposed at the bottom of the support, the surface of the support being provided with a second through hole, the inflation interface of the ring-shaped air bag being disposed through the second through hole. The unmanned aerial vehicle main body is also provided with a battery module, the battery module being disposed around the control core, the battery module being electrically connected to the drive motor and the wing. The bottom of the sampler is provided with a toothed structure, the edge of the toothed structure being provided with a cutting edge. The inner wall of the sampler is provided with a plurality of equally spaced rfid tags, the first through hole wall of the control core being provided with a reader for reading the rfid tag information, the rfid tags being provided with unique numbers Tag1, Tag2, Tag3,..., TagN from top to bottom, the distance between adjacent two rfid tags being 5-10 cm.

[0023] The working principle and use process of the present application are as follows: I. Flight control of the unmanned aerial vehicle The unmanned aerial vehicle main body is similar to a conventional unmanned aerial vehicle, having the same flight function, control function and load function.

[0024] II. Assembly working principle of the unmanned aerial vehicle main body and the sampler A first through hole is provided in the middle of the control core, a plurality of drive motors are provided on the control core, a lead screw shaft connected to the drive motor is located inside the control core and partially penetrates into the first through hole, the exposed part cooperates with the threaded structure on the surface of the sampler, and the sampler is driven to move up or down in the first through hole by the rotation of the lead screw shaft. The drive motor can be started completely or partially, partial startup can save energy, and complete startup is mainly used for hard soil. When all the drive motors are started, the sampler has greater pressure. The position of the sampler in the control core is confirmed by the response of the rfid tag and the reader.

[0025] In the idle state, the bottom of the sampler is generally located in the first through hole, and can also penetrate the first through hole. Before sampling, the bottom of the sampler needs to be higher than the floating seat. During sampling, the sampler gradually moves down into the soil. After sampling is completed, the sampler rises, and the bottom needs to be located in the first through hole. At this time, the rubber baffle is closed, and the rubber baffle can block the sampling object to avoid falling.

[0026] When the sampler rises after sampling is completed, the thread structure on the surface of the sampler may be attached with a large amount of soil. The soil embedded in the thread structure is scraped off by the thread groove scraper arranged at the bottom of the control core, so as to avoid affecting the cooperation of the screw shaft and the sampler.

[0027] III. The role of the floating seat Because the application is used in the mangrove soil environment, the beach ground is easy to sink the unmanned aerial vehicle, and the unmanned aerial vehicle cannot take off normally. The floating seat can ensure that the unmanned aerial vehicle does not sink, and can even be applied to the water surface.

[0028] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and not for limiting the present application, although the present application is described in detail with reference to the foregoing embodiments, for those skilled in the art, it still can modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part of the technical features. Any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A drone for collecting blue carbon from mangroves, characterized in that, The device includes a drone body and a sampler. The drone body includes a control core and propellers. The propellers are evenly distributed around the control core. The sampler is installed through the center of the control core. The center of the control core has a first through hole. Several drive motors are installed at the upper end of the control core. The main shaft of the drive motor is connected to a lead screw shaft. The lead screw shaft part passes through the wall of the first through hole. The sampler is fitted in the first through hole. The surface of the sampler has a threaded structure. The drive motor can drive the sampler to move up and down in the first through hole.

2. The UAV for collecting blue carbon from mangroves according to claim 1, characterized in that: The bottom of the first through hole of the control core is equipped with a rubber baffle, which is composed of several rubber sheets. When the sampler passes through the first through hole, the rubber sheets open, and when the sampler is retracted into the first through hole, the rubber sheets close.

3. The UAV for collecting blue carbon from mangroves according to claim 1, characterized in that: The bottom of the control core is equipped with several threaded groove scrapers, and the distance between the cutting edge of each threaded groove scraper and the center of the first through hole is different.

4. The UAV for collecting blue carbon from mangroves according to claim 1, characterized in that: The drone also has a floating base located below its main body, which is connected to the control core via a linkage.

5. The UAV for collecting blue carbon from mangroves according to claim 1, characterized in that: The float seat includes a support frame and an annular airbag. One end of the connecting rod is connected to the control core, and the other end is connected to the support frame. The annular airbag is located at the bottom of the support frame. The support frame has a second through hole, and the inflation port of the annular airbag passes through the second through hole.

6. The UAV for collecting blue carbon from mangroves according to claim 5, characterized in that: The drone also has a battery module, which is located around the control core and is electrically connected to the drive motor and propellers.

7. The UAV for collecting blue carbon from mangroves according to claim 1, characterized in that: The sampler has a toothed structure at the bottom, and the edges of the toothed structure have cutting edges.

8. The UAV for collecting blue carbon from mangroves according to claim 1, characterized in that: The inner wall of the sampler is equipped with several equidistant RFID tags. The first through hole of the control core is equipped with a reader for reading RFID tag information. The RFID tags are uniquely numbered from top to bottom as Tag1, Tag2, Tag3...TagN, and the spacing between two adjacent RFID tags is 5-10cm.

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