Quadrat positioning device and method

Abstract

The invention relates to the field of plant biological survey, and provides a quadrat positioning device which comprises a shell (1) used for being buried in soil, and an installation cavity (101) and an opening (102) are formed in the shell (1); the positioning projection mechanism (2) is arranged in the mounting cavity (101) and comprises a quadrat projection module (4) and a positioning module (5); the telescopic mechanism (3) is arranged in the mounting cavity (101), the telescopic mechanism (3) is connected with the shell (1) and the positioning projection mechanism (2) so as to be used for pushing the positioning projection mechanism (2) to extend outwards from the opening (102), so that the quadrat projection module (4) can project to a quadrat area, and the quadrat positioning device is convenient to carry and mount, easy to find and high in practicability. Therefore, the continuity of sampling investigation is effectively ensured. The invention further provides a quadrat positioning method.

Description

Technical Field

[0001] The present invention relates to the field of plant biological investigation, and in particular to a sample plot positioning device and method. Background Art

[0002] In the process of sampling survey of plants, the sampling method is the most basic survey sampling method, among which the sampling plot is a randomly set sampling plot used to investigate the number of plant communities, and generally a square sampling plot is used.

[0003] The existing sample plot setting is mainly to measure with a tape measure, and to form a closed square with a measuring rope and a vertical rod to form a sample plot. However, the sample plot setting method of the above-mentioned existing technology is difficult to find, and the measuring rope and the vertical rod are very easy to be damaged, which cannot ensure the continuity of the plant biodiversity survey, and the tape measure, the measuring rope and the vertical rod are also poor in carrying and installing convenience. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a sample plot positioning device, which is easy to carry and install, easy to find, not easily damaged, and effectively ensures the continuity of the sampling survey.

[0005] Another technical problem to be solved by the present invention is to provide a sample plot positioning method, which can improve the accuracy of subsequent sample plot position adjustment.

[0006] In order to solve the above technical problems, the present invention provides a sample plot positioning device, comprising:

[0007] A shell for being buried in the soil, wherein the shell is formed with a mounting cavity and an opening;

[0008] A positioning projection mechanism is arranged in the installation cavity, and the positioning projection mechanism comprises a quadrat projection module and a positioning module;

[0009] A telescopic mechanism is arranged in the installation cavity, and the telescopic mechanism is respectively connected to the shell and the positioning projection mechanism, so as to push the positioning projection mechanism to extend outward from the opening, so that the sample plot projection module can project to the sample plot area.

[0010] In some specific embodiments, an image acquisition module is further included, and the image acquisition module is integrated with the sample projection module.

[0011] In some specific embodiments, a control module is further included, and the control module is electrically connected to the sample quadrat projection module, the telescopic mechanism and the image acquisition module respectively.

[0012] In some specific implementations, an electric pan-tilt platform is provided between the positioning and projection mechanism and the telescopic mechanism, and the electric pan-tilt platform is electrically connected to the control module.

[0013] In some specific embodiments, the sample plot projection module is an infrared laser grating module.

[0014] In some specific embodiments, the shell includes a shell body and a shell bottom cover, the opening is arranged at the top of the shell body, the shell bottom cover is detachably installed on the bottom of the shell body to form the installation cavity, and the telescopic mechanism is installed on the shell bottom cover.

[0015] In some specific embodiments, a protective cover is further provided on the top of the shell, and the protective cover includes a first cover plate and a second cover plate that are relatively arranged, the first cover plate and the second cover plate are both hinged to the shell body, and an elastic reset element is provided at the hinge to provide an elastic force to drive the first cover plate and the second cover plate to rotate toward the installation cavity, so that the first cover plate and the second cover plate cooperate with each other to close the opening.

[0016] In some specific implementations, a waterproof rubber strip is provided between the opening and the outer peripheral wall of the positioning and projection mechanism.

[0017] The present invention also provides a sample plot positioning method, which uses at least two of the above sample plot positioning devices, and at least two of the sample plot positioning devices are used to indicate the same sample plot area. The sample plot positioning method includes:

[0018] The housing is buried in the ground, and the telescopic mechanism is controlled to push the sample plot projection module out of the opening, and the height of the sample plot projection module extending out of the ground is adjusted so that the sample plot projection module is projected onto the sample plot area to form a sample plot;

[0019] storing the current telescopic height of the telescopic mechanism as the set telescopic height;

[0020] After sampling of the sample area is completed, the telescopic mechanism is controlled to return to an initial state so that the sample projection module is retracted into the installation cavity;

[0021] When sampling next time, the embedding position of the sample plot positioning device is obtained according to the positioning module, the telescopic mechanisms of all the sample plot positioning devices are controlled to the set telescopic height, and the operation of the sample plot projection module is controlled;

[0022] Obtaining the sample projection areas of all the sample projection modules, and obtaining the overlap rate between the projection areas of each pair of sample projections;

[0023] Correcting the sample plot projection area based on the overlap rate to form a sample plot;

[0024] Update the parameter settings of the sample plot positioning device.

[0025] In some specific embodiments, the forming of the sample plot by correcting the sample plot projection area based on the overlap rate comprises:

[0026] Obtaining the maximum value of all the overlap rates;

[0027] In response to the maximum overlap rate being greater than or equal to a preset value, the sample plot projection area is not corrected, and one of the two sample plot projection areas corresponding to the maximum overlap rate is used as a sample plot;

[0028] In response to the maximum overlap rate being less than a preset value, the two sample plot projection areas corresponding to the maximum overlap rate are overlapped, and the finally formed overlapping sample plot projection area is used as the sample plot.

[0029] Through the above scheme, the beneficial effects of the present invention are as follows:

[0030] The sample plot positioning device of the present invention projects the sample plot area through the sample plot projection module to position the sample plot, and does not require measuring ropes and vertical poles, thus saving labor and improving field work efficiency and work quality; when sampling operations are not required, the positioning projection mechanism can be retracted into the installation cavity of the shell through the telescopic mechanism, and buried in the soil together with the shell, which can effectively prevent damage and ensure the continuity of the investigation; at the same time, the positioning module can be used to facilitate the search for its buried position, making it easy to find; in addition, the positioning projection mechanism and the telescopic mechanism are both integrated in the shell, which is convenient for carrying and installation.

[0031] The sample plot positioning method of the present invention sets at least two sample plot positioning devices to indicate the same sample plot area. When performing sample plot positioning for subsequent investigation, the overlap rate between the projection areas of two sample plots can be obtained, and the sample plot projection area is corrected according to the overlap rate to ensure that the sample plot position for subsequent investigation and positioning is the same as the previous position, thereby improving the accuracy of the survey sampling data.

[0032] Other features and advantages of the present invention will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present invention but do not constitute a limitation of the present invention. In the accompanying drawings:

[0034] Figure 1 The structure diagram of a specific embodiment of the sample positioning device of the present invention is Figure 1 ;

[0035] Figure 2The structure diagram of a specific embodiment of the sample positioning device of the present invention is Figure 2 ;

[0036] Figure 3 This is a schematic diagram of a specific embodiment of the sample positioning device of the present invention in use Figure 1 ;

[0037] Figure 4 This is a schematic diagram of a specific embodiment of the sample positioning device of the present invention in use Figure 2 ;

[0038] Figure 5 It is a step diagram of the sample positioning method of the present invention;

[0039] Figure 6 This is the correction principle of the sample projection area. Figure 1 ;

[0040] Figure 7 This is the correction principle of the sample projection area. Figure 2 .

[0041] Description of Reference Numerals

[0042] Tag Name

[0043] 1. Shell; 101. Installation cavity; 102. Opening; 103. Shell body; 104. Shell bottom cover; 2. Positioning projection mechanism; 3. Telescopic mechanism; 4. Sample quadrat projection module; 5. Positioning module; 6. Image acquisition module; 7. Control module; 8. Electric pan-tilt head; 9. Protective cover; 901. First cover plate; 902. Second cover plate; 903. Step surface; 10. Battery module. DETAILED DESCRIPTION

[0044] The specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present invention, and the protection scope of the present invention is not limited to the following specific embodiments.

[0045] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "formed", "provided with", "set", "connected" and the like should be understood in a broad sense. For example, the connection can be a direct connection or an indirect connection through an intermediate medium, a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate connector, and it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0046] In the present invention, unless otherwise specified, the directions or positional relationships indicated by the directional words "up", "down", "left", "right", "counterclockwise", etc. are based on the directions or positional relationships shown in the accompanying drawings, and are only used to facilitate the description of the present invention and simplify the description, rather than to indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention; the directional terms of the present invention should be understood in conjunction with the actual installation state.

[0047] The present invention provides a sample plot positioning device, see Figure 1-Figure 4 , including a shell 1, a positioning projection mechanism 2 and a telescopic mechanism 3. The shell 1 is used to be buried in the soil. The shell 1 is formed with an installation cavity 101 and an opening 102. The positioning projection mechanism 2 and the telescopic mechanism 3 are both arranged in the installation cavity 101. The positioning projection mechanism 2 includes a sample plot projection module 4 and a positioning module 5. The telescopic mechanism 3 is respectively connected to the shell 1 and the positioning projection mechanism 2 to push the positioning projection mechanism 2 to extend outward from the opening 102, so that the sample plot projection module 4 can project to the sample plot area.

[0048] The sample plot positioning device of the present invention projects the sample plot area through the sample plot projection module 4 to locate the sample plot, and does not require measuring ropes and vertical poles, thus saving labor and improving field work efficiency and work quality; when sampling operation is not required, the positioning projection mechanism 2 can be retracted into the installation cavity 101 of the shell 1 through the telescopic mechanism 3, and buried in the soil together with the shell, which can effectively prevent damage and ensure the continuity of the investigation; when the subsequent investigation is conducted again, the positioning module 5 can be used to easily find its buried position, which is easy to find, and control the telescopic mechanism 3 to push the positioning projection mechanism 2 to extend outward from the opening 102, so that the sample plot projection module 4 projects to the sample plot area again, and the extension height parameters of the telescopic mechanism 3 and the setting parameters of the sample plot projection module 4 correspond to the parameters of the first projection, thereby ensuring the accuracy of the subsequent investigation sample plot division and ensuring the accuracy and reliability of the investigation data; in addition, the positioning projection mechanism 2 and the telescopic mechanism 3 are both integrated in the shell, which is easy to carry and install.

[0049] It should be noted that the shell 1 can be cylindrical or square cylindrical, and there is no restriction on its specific shape. Preferably, the shell 1 is cylindrical to facilitate installation into a pit on the ground, and in order to avoid axial rotation after installation, an insert rod is provided on the outer wall and / or the outer side of the bottom of the shell 1 to fix it in the pit; the positioning projection mechanism 2 is cylindrical corresponding to the cylindrical shell 1, which is convenient for moving up and down in the installation cavity 101 of the shell 1, and in order to intuitively check the height of the positioning projection mechanism 2 extending outward from the opening 102, a size scale is provided on its outer surface. The above-mentioned positioning module 5 is diverse, and can adopt one of China's Beidou Satellite Navigation System (BDS), the United States' Global Positioning System (GPS), Russia's GLONASS Satellite Navigation System (GLONASS) and the European Union's Galileo Satellite Navigation System (GALILEO). Specifically, the positioning chip of the positioning module 5 is preferably installed on the top of the positioning projection mechanism 2, so that when buried underground, it can effectively ensure the transmission of the positioning signal. When multiple sample plot positioning devices are buried on the ground, the positioning modules 5 of different devices can be numbered for easy distinction and search. The sample plot projection module 4 is preferably an infrared laser grating module, see the figure, which can project red grid lines on the ground to effectively distinguish the sample plot boundaries, and the area projected to the ground by the infrared laser grating module can be adjusted according to the actual needs of the sample plot area. Specifically, its projection area ranges from 1 to 4 m 2 , so as to be set according to the types of herbs and shrubs. The telescopic mechanism 3 is preferably an electric cylinder, which is fixed to the bottom of the shell 1, and its telescopic rod is connected to the positioning projection mechanism 2 to realize telescopic movement. In addition, the specific size of the sample positioning device of the present invention is designed according to actual needs. Preferably, the diameter range of the shell 1 is 8-12cm, and the wall thickness is 1.5-2.5cm. In order to reduce the overall weight of the device, the shell 1 and the outer shell of the positioning projection mechanism 2 can be made of lightweight and high-strength carbon fiber, and the surface is treated with anti-corrosion, which has a high service life and reliability.

[0050] In some specific embodiments, an image acquisition module 6 is also included. The image acquisition module 6 can be a miniature camera. In order to facilitate the acquisition of sample images at night or in poor light conditions, preferably, the miniature camera can be integrated with a flash or an infrared shooting function. The image acquisition module 6 is integrated with the sample projection module 4. When the telescopic mechanism 3 pushes the positioning projection mechanism 2 to extend outward from the opening 102, the image acquisition module 6 can acquire images of the sample area, thereby obtaining the projection of the sample projection module 4. Furthermore, the sample positioning device of the present invention is also provided with a network module. The images acquired by the image acquisition module 6 can be remotely transmitted through the network module, so that investigators can view the vegetation distribution in the sample in real time through a remote computer or mobile device (mobile phone, tablet computer, etc.) without on-site viewing.

[0051] In some specific embodiments, a control module 7 is further included. The control module 7 is electrically connected to the sample plot projection module 4, the telescopic mechanism 3 and the image acquisition module 6 respectively. After the sample plot positioning device of the present invention is installed for the first time, the relevant parameters of the sample plot projection module 4 and the telescopic mechanism 3 are set, and the image after the first projection to the sample plot area is recorded by the image acquisition module 6. During the subsequent investigation, the control module 7 controls the sample plot projection module 4 and the telescopic mechanism 3 to operate according to the relevant parameters set for the first time to form a projection of the sample plot area. The sample plot projection module 4 acquires an image of the projection of the sample plot area, and compares it with the image of the first projection through an image recognition algorithm, thereby adjusting the projection position according to the comparison result to ensure the consistency of the sample plots located in the subsequent investigation.

[0052] In some specific embodiments, an electric pan-tilt platform 8 is provided between the positioning projection mechanism 2 and the telescopic mechanism 3, and the electric pan-tilt platform 8 is electrically connected to the control module 7. The electric pan-tilt platform 8 is preferably an omnidirectional pan-tilt platform, so as to be able to rotate left and right and up and down, so as to facilitate the adjustment of the sample plot projection module 4 and the image acquisition module 6. The control module 7 can adjust the projection area of ​​the sample plot area through the mutual coordination of the electric pan-tilt platform 8 and the projection parameter adjustment of the sample plot projection module 4 itself. Furthermore, through the wireless module, the investigators can also remotely control and manually adjust the projection area of ​​the sample plot projection module 4 and the image acquisition area of ​​the image acquisition module 6.

[0053] It should be noted that the sample plot positioning device of the present invention further includes a battery module 10, which is arranged in the installation cavity 101 of the housing 1 or integrated in the positioning projection mechanism 2 to provide power to the above-mentioned power module. In addition, in order to reduce the power consumption of the battery module 10, a low-power Bluetooth can be set for signal detection, and the positioning module 5 can first find the buried position and walk into the detection area of ​​the low-power Bluetooth, thereby waking up the control module 7, the sample plot projection module 4, the telescopic mechanism 3 and the image acquisition module 6 of the sample plot positioning device of the present invention, thereby reducing the overall power consumption of the system and achieving the energy-saving effect of the device.

[0054] In some specific embodiments, the shell 1 includes a shell body 103 and a shell bottom cover 104, the opening 102 is arranged at the top of the shell body 103, the shell bottom cover 104 can be detachably installed at the bottom of the shell body 103 to form an installation cavity 101, and the telescopic mechanism 3 is installed on the shell bottom cover 104; specifically, the connection between the shell bottom cover 104 and the shell body 103 is formed with matching internal and external threads, so that the two are threadedly connected, which is convenient for installing the telescopic mechanism 3, positioning the projection mechanism 2 and other modules.

[0055] In some specific embodiments, a protective cover 9 is further provided on the top of the housing 1. The protective cover 9 includes a first cover plate 901 and a second cover plate 902 which are arranged opposite to each other. The first cover plate 901 and the second cover plate 902 are both hinged to the housing body 103, and an elastic reset element (preferably a torsion spring) is provided at the hinge to provide an elastic force to drive the first cover plate 901 and the second cover plate 902 to rotate toward the installation cavity 101, so that the first cover plate 901 and the second cover plate 902 cooperate with each other to close the opening 102. When the positioning projection mechanism 2 is retracted into the installation cavity 101, the first cover plate 901 and the second cover plate 902 automatically close the opening 102, and form a protective cover 9 located on the top of the positioning projection mechanism 2, thereby playing a protective role and preventing debris on the ground from directly hitting the positioning projection mechanism 2; and when the positioning projection mechanism 2 is extended, the first cover plate 901 and the second cover plate 902 can be pushed open, so that the sample quadrat projection module 4 and the image acquisition module 6 can function normally. It should be noted that, in order to avoid interference with the signals of the positioning module 5 and the wireless module, the protective cover 9 may preferably be made of high-strength carbon fiber.

[0056] In actual use, the external surrounding environment is changeable. In order to prevent water from affecting the normal use of the sample positioning device of the present invention, a waterproof rubber strip is provided between the opening 102 and the outer peripheral wall of the positioning projection mechanism 2 to prevent water from entering the installation cavity 101. Similarly, waterproof rubber strips can be provided at the connection between the first cover plate 901 and the second cover plate 902, the contact portion between the protective cover 9 and the shell 1, and the connection between the shell body 103 and the shell bottom cover 104 to ensure the normal operation of the module inside the installation cavity 101. In addition, in order to ensure the sealing reliability of the joint between the first cover plate 901 and the second cover plate 902, see Figure 1 and Figure 2 The butt end surfaces of the first cover plate 901 and the second cover plate 902 are arranged to be matched with each other.

[0057] In order to better understand the technical solution of the sample positioning device of the present invention, its usage is described below in combination with relatively preferred technical features.

[0058] First, the positioning projection mechanism 2, the telescopic mechanism 3, and the battery module 10 are all installed in the installation cavity 101 of the shell 1, and the assembled shell 1 is installed in the hole drilled in advance on the ground, and the protective cover 9 is in the same plane as the surrounding ground. If there is a gap between the hole and the outer peripheral wall of the shell 1, it is backfilled appropriately to avoid the problem of projection position change caused by the shaking of the device during subsequent use. According to the sample area to be investigated, the rising height of the telescopic mechanism 3, the projection parameters of the infrared laser grating module, and the displacement parameters of the electric pan-tilt 8 are set, so that the red light grid projected by the infrared laser grating module is projected on the ground to form a sample. At the same time, the image acquisition module 6 is controlled to collect and record the initial image, which can be used for subsequent sample position comparison, and then the plant community composition, interspecific density and other plant diversity index surveys in the sample are recorded. After completion, the telescopic mechanism 3 is controlled to retract the positioning projection mechanism 2 into the installation cavity 101, and the first cover plate 901 and the second cover plate 902 automatically close the installation cavity 101 and protect its internal structure. In the subsequent investigation, the investigator can remotely control the telescopic mechanism 3 through the wireless module to extend the positioning projection mechanism 2 from the opening 102 to the specified height, and collect images through the image acquisition module 6, so that the sample plot investigation can be completed without going to the field; or, according to the positioning signal of the positioning module 5, the buried location of the device is found, and the positioning projection mechanism 2 is controlled on-site to extend and operate, so as to check the plant conditions in the sample plot on the spot; and the image collected by the image acquisition module 6 can be compared with the initial image, and the image recognition algorithm can be used to identify whether the sample plot formed by the projection of the infrared laser grating module has changed in position, so as to avoid the position change of the soil where the device is installed, which affects the accuracy and reliability of the investigation data. When the position change is identified, the control module 7 adjusts the telescopic mechanism 3, the infrared laser grating module and the electric pan-tilt head 8 to return the sample plot projected by the infrared laser grating module to the correct position; the investigator can also manually compare according to the collected images and manually adjust the relevant parameters to adjust the sample plot projected by the infrared laser grating module to the correct position, thereby ensuring the accuracy of the sample plot investigation. The sample plot positioning device of the present invention adopts the above technical scheme, does not need measuring ropes and vertical poles, saves labor, improves field work efficiency and work quality, and buries the device in the soil to effectively prevent damage and ensure the continuity of the investigation; and the positioning projection mechanism and the telescopic mechanism are integrated in the shell, which is easy to carry and install.

[0059] The above is a method for using a preferred embodiment of the sample plot positioning device of the present invention. It should be noted that in order to further improve the reliability and accuracy of sample plot positioning in the subsequent investigation process, the present invention also provides a sample plot positioning method, which uses at least two sample plot positioning devices of the present invention, and at least two sample plot positioning devices are used to indicate the same sample plot area, see Figure 5 , the sample plot positioning method includes:

[0060] S100, burying the housing 1 in the ground, controlling the telescopic mechanism 3 to push the sample plot projection module 4 out of the opening 102, and adjusting the height of the sample plot projection module 4 extending out of the ground, so that the sample plot projection module 4 projects to the sample plot area to form a sample plot.

[0061] S200, storing the current telescopic height of the telescopic mechanism 3 as the set telescopic height.

[0062] S300 , after sampling of the sample area is completed, the telescopic mechanism 3 is controlled to return to the initial state, so that the sample projection module 4 is retracted into the installation cavity 101 .

[0063] S400, waiting for the next sampling, obtaining the buried position of the sample plot positioning device according to the positioning module 5, controlling the telescopic mechanisms 3 of all sample plot positioning devices to the set telescopic height, and controlling the sample plot projection module 4 to operate.

[0064] S500, obtaining the sample projection areas of all the sample projection modules 4, and obtaining the overlap rate between the sample projection areas of each pair; specifically, the image acquisition module 6 can be used to acquire images of the grids projected on the sample area by each sample positioning device, and the grid features can be advanced by an image recognition algorithm to acquire the projection areas corresponding to different grids. For example, the projection areas corresponding to grid one and grid two are S1 and S2, wherein S1 is less than or equal to S2, and the overlap rate between the two is S1 / S2*100%.

[0065] S600, forming a sample plot by correcting the sample plot projection area based on the overlap rate; specifically, step S600 includes:

[0066] S601, obtaining the maximum value of all overlap rates; when the number of sample plot positioning devices used is greater than or equal to three, if one of them is offset, the overlap rate between the sample plot projection area of ​​the offset device and the remaining projection areas will be reduced. Therefore, obtaining two sample plot projection areas corresponding to the maximum overlap rate can effectively exclude the offset device and ensure the accuracy of sample plot positioning;

[0067] S602, in response to the maximum overlap rate being greater than or equal to a preset value, the preset value can be set according to actual needs, for example, it can be set at 95% to 98%. When it is greater than the preset value, it means that the two sample plot projection areas corresponding to the maximum overlap rate are relatively accurate, no position offset occurs, or the position offset has little effect on the sample plot sampling result, the sample plot projection area is not corrected, and one of the two sample plot projection areas corresponding to the maximum overlap rate is used as the sample plot. The priority of the sample plot positioning device can be preset, so that the sample plot projection area corresponding to the device with a high priority is used as the final sample plot for sampling survey;

[0068] S603, in response to the maximum overlap rate being less than a preset value, the two sample plot projection areas corresponding to the maximum overlap rate are overlapped, and the resulting overlapping sample plot projection area is used as the sample plot, thereby effectively reducing the influence of the position offset of the sample plot positioning device on the sample plot sampling data and ensuring the accuracy of the survey results. Specifically, the above-mentioned overlapping processing includes the following steps, see Figure 6 and Figure 7 , the two sample plot projection areas corresponding to the maximum overlap rate are area T1 and area T2, respectively, the positions of the center point P1 and the midpoint P2 of area T1 and area T2 are obtained respectively, the midpoint P3 of the line connecting point P1 and point P2 is taken, area T1 is translated from the center point P1 to the midpoint P3 to obtain area T1-1, area T2 is translated from point P2 to the midpoint P3 to obtain area T2-1, and the deflection angle A between area T1-1 and area T2-1 is calculated, and the midpoint P3 is used as the rotation center point to rotate in opposite directions by an angle A / 2 to obtain the final overlapping sample plot projection area; it should be noted that, in order to avoid the position offset of the sample plot positioning device being too large, a smaller warning preset value can also be set. When the maximum overlap rate is less than the warning preset value, no correction is performed, and a warning message is sent to the investigator to warn the investigator that the current position offset is too large, and the investigator needs to manually confirm the located sample plot to avoid the sample plot obtained after the overlapping processing and the sample plot initially located The position offset is too large, which affects the reliability of the data.

[0069] S700, updating parameter settings of the sample plot positioning device; specifically, updating parameters of all sample plot positioning devices according to the obtained overlapping sample plot projection area, so that the sample plot projection module 4 of each sample plot positioning device forms a sample plot projection area corresponding to the overlapping sample plot projection area, so as to adaptively correct its position information and ensure the accuracy of sample plot positioning in subsequent surveys.

[0070] As a preferred implementation, before calculating the overlap rate in step 500, each plot positioning device can adaptively adjust the current plot projection area according to the first projection image captured by its own image acquisition module 6 and the image recognition algorithm. After the adjustment, the overlap rate calculation is performed, which can further improve the consistency of the plots positioned in subsequent surveys and ensure the reliability of the survey data.

[0071] The present invention is described with reference to flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to embodiments of the present invention. It should be understood that each process and / or block in the flowchart and / or block diagram, as well as the combination of processes and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0072] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0073] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 A step that specifies a function in one or more boxes.

[0074] In a typical configuration, a computing device includes one or more processors (CPU), input / output

[0076] egress interface, network interface, and memory.

[0077] The memory may include non-permanent memory in a computer-readable medium, random access memory (RAM) and / or non-volatile memory in the form of read-only memory (ROM) or flash RAM. The memory is an example of a computer-readable medium.

[0078] Computer readable media include permanent and non-permanent, removable and non-removable media and can store information by any method or technology. The information can be computer readable instructions, data structures, program modules or other data.

[0079] Examples of computer storage media include, but are not limited to, phase change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technology, compact disk read-only memory (CD-ROM), digital versatile disk (DVD) or other optical storage, magnetic cassettes, magnetic disk storage or other magnetic storage devices or any other non-transmission media that can be used to store information that can be accessed by a computing device. As defined herein, computer-readable media does not include transitory media such as modulated data signals and carrier waves.

[0080] It should also be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, commodity or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, commodity or device. In the absence of more restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the process, method, commodity or device including the elements.

[0081] The above are only embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A sample plot positioning device, characterized in that: include: A shell (1) for being buried in the soil, the shell (1) being formed with a mounting cavity (101) and an opening (102); A positioning projection mechanism (2) arranged in the installation cavity (101), the positioning projection mechanism (2) comprising a quadrat projection module (4) and a positioning module (5); A telescopic mechanism (3) is arranged in the installation cavity (101), and the telescopic mechanism (3) is respectively connected to the housing (1) and the positioning projection mechanism (2) so as to push the positioning projection mechanism (2) to extend outward from the opening (102), so that the sample plot projection module (4) can project onto the sample plot area.

2. The sample plot positioning device according to claim 1, characterized in that: It also comprises an image acquisition module (6), wherein the image acquisition module (6) is integrated with the sample plot projection module (4).

3. The sample plot positioning device according to claim 2, characterized in that: It also comprises a control module (7), wherein the control module (7) is electrically connected to the sample plot projection module (4), the telescopic mechanism (3) and the image acquisition module (6) respectively.

4. The sample plot positioning device according to claim 3, characterized in that: An electric pan-tilt platform (8) is provided between the positioning projection mechanism (2) and the telescopic mechanism (3), and the electric pan-tilt platform (8) is electrically connected to the control module (7).

5. The sample plot positioning device according to claim 1, characterized in that: The sample plot projection module (4) is an infrared laser grating module.

6. The sample plot positioning device according to claim 1, characterized in that: The shell (1) comprises a shell body (103) and a shell bottom cover (104); the opening (102) is arranged at the top of the shell body (103); the shell bottom cover (104) is detachably mounted on the bottom of the shell body (103) to form the mounting cavity (101); and the telescopic mechanism (3) is mounted on the shell bottom cover (104).

7. The sample plot positioning device according to claim 6, characterized in that: A protective cover (9) is also provided on the top of the shell (1), and the protective cover (9) includes a first cover plate (901) and a second cover plate (902) which are arranged opposite to each other, the first cover plate (901) and the second cover plate (902) are both hinged to the shell body (103), and an elastic reset element is provided at the hinge to provide an elastic force to drive the first cover plate (901) and the second cover plate (902) to rotate toward the installation cavity (101), so that the first cover plate (901) and the second cover plate (902) cooperate with each other to close the opening (102).

8. The sample plot positioning device according to claim 1, characterized in that: A waterproof rubber strip is provided between the opening (102) and the outer peripheral wall of the positioning projection mechanism (2).

9. A sample plot positioning method, characterized in that: The sample plot positioning method adopts at least two sample plot positioning devices described in any one of claims 1 to 8, and at least two of the sample plot positioning devices are used to indicate the same sample plot area. The sample plot positioning method comprises: The housing (1) is buried in the ground, the telescopic mechanism (3) is controlled to push the sample plot projection module (4) to extend out from the opening (102), and the height of the extension from the ground is adjusted so that the sample plot projection module (4) is projected onto the sample plot area to form a sample plot; storing the current telescopic height of the telescopic mechanism (3) as the set telescopic height; After sampling of the sample area is completed, the telescopic mechanism (3) is controlled to return to an initial state, so that the sample projection module (4) is retracted into the installation cavity (101); When sampling is to be carried out next time, the embedding position of the sample plot positioning device is obtained according to the positioning module (5), the telescopic mechanisms (3) of all the sample plot positioning devices are controlled to the set telescopic height, and the operation of the sample plot projection module (4) is controlled; Obtaining the sample plot projection areas of all the sample plot projection modules (4), and obtaining the overlap ratio between any two sample plot projection areas; Correcting the sample plot projection area based on the overlap rate to form a sample plot; Update the parameter settings of the sample plot positioning device.

10. The method for sample location according to claim 9, characterized in that: The forming of the sample plot by correcting the sample plot projection area based on the overlap rate comprises: Obtaining the maximum value of all the overlap rates; In response to the maximum overlap rate being greater than or equal to a preset value, the sample plot projection area is not corrected, and one of the two sample plot projection areas corresponding to the maximum overlap rate is used as a sample plot; In response to the maximum overlap rate being less than a preset value, the two sample plot projection areas corresponding to the maximum overlap rate are overlapped, and the finally formed overlapping sample plot projection area is used as the sample plot.

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