Soil profile in-situ spectrum flexible image transmission look-around observation device and observation method

Abstract

The invention discloses a soil profile in-situ spectrum flexible image transmission look-around observation device and observation method, and solves the technical problems of high cost and serious damage to a soil structure in an existing soil profile prediction method. The device comprises a look-around observation module, an optical fiber image transmitting bundle, a fine light splitting and embedded processing module and a vertical displacement platform, the working end of the vertical displacement platform moves up and down along the underground soil profile; the all-round observation module is connected with the working end of the vertical displacement platform and used for collecting all-view space image information of the underground soil profile. The signal input end of the optical fiber image transmitting bundle is connected with the signal output end of the all-round observation module and is used for receiving and transmitting all-view space image information of the underground soil profile; the input end of the fine light splitting and embedded processing module is connected with the signal output end of the optical fiber image transmitting bundle, and the fine light splitting and embedded processing module is used for receiving the full-view-angle space image information of the underground soil profile and conducting embedding processing to obtain a soil multi-parameter inversion drawing.

Description

Technical Field

[0001] This invention relates to methods and devices for monitoring the natural resource ecological environment, specifically to an in-situ spectral flexible imaging panoramic observation device and method for soil profiles. Background Technology

[0002] With the rapid development of hyperspectral remote sensing technology, it has demonstrated unique advantages in the field of soil monitoring. By acquiring continuous narrow-band spectral information of ground objects, hyperspectral technology can perform non-contact inversion of parameters such as soil organic matter, metal ions, and clay content, providing an important technical means for precision agriculture, soil health assessment, and pollution prevention and control.

[0003] In recent years, scholars have successfully predicted the vertical distribution of parameters such as nitrogen, organic carbon, and salinity in soil profiles using imaging spectrometers (400nm–2500nm), and revealed the migration patterns of minerals such as calcium carbonate and iron oxides. However, these studies generally rely on profile sample collection and analysis under laboratory conditions, which has inherent drawbacks such as sample structural damage, distortion of physicochemical properties, poor spatiotemporal continuity, high cost, and low efficiency.

[0004] In-situ monitoring refers to the method of directly observing the target object on-site. It has the advantages of high fidelity and dynamic continuity, and is widely used in environmental monitoring (water bodies, soil and rock). Current in-situ observations mostly adopt the method of manually excavating large profiles (typical size: 2.2m × 0.8m × 1.2m) and using visible-near infrared imaging spectrometers for single-sided scanning measurements. This method has problems such as high profile excavation costs, severe damage to soil structure, and the ability to detect only one profile, which is prone to observation bias due to spatial heterogeneity. Furthermore, it cannot achieve long-term continuous observation of the same profile. Summary of the Invention

[0005] The purpose of this invention is to address the technical problems in existing soil profile prediction methods using imaging spectrometers, which rely on sampling and analysis of profile samples under laboratory conditions, resulting in sample structural damage, distortion of physicochemical properties, poor spatiotemporal continuity, high cost, and low efficiency. In-situ monitoring, on the other hand, suffers from high profile excavation costs, severe soil structural damage, and observation biases caused by spatial heterogeneity. The invention provides a flexible in-situ spectral imaging panoramic observation device and method for soil profiles.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A flexible in-situ spectral imaging and panoramic observation device for soil profiles is characterized by including a panoramic observation module, an optical fiber imaging bundle, a fine beam splitting and embedded processing module, and a vertical displacement platform.

[0008] The vertical displacement platform is set along the underground soil profile, and the working end can move up and down along the underground soil profile;

[0009] The panoramic observation module is connected to the working end of the vertical displacement platform and is used to collect full-view spatial image information of the underground soil profile.

[0010] The signal input end of the fiber optic image transmission bundle is connected to the signal output end of the panoramic observation module, which is used to receive and transmit full-view spatial image information of the underground soil profile.

[0011] The input end of the fine beam splitting and embedded processing module is connected to the signal output end of the fiber optic image transmission bundle. It is used to receive full-view spatial image information of the soil profile in the well and perform embedded processing to obtain multi-parameter inversion mapping of the soil.

[0012] Furthermore, the panoramic observation module includes four fisheye lenses, an illumination strip, a battery module, and an observation housing;

[0013] The signal output ends of the four fisheye objectives are connected to the signal input end of the fiber optic image transmission bundle. All four fisheye objectives are of the anti-telephoto type and are fixedly connected to the same plane on the observation shell. They are used to collect the full field-of-view toroidal spatial image information of the soil. The anti-telephoto type fisheye objectives can more easily achieve image telecenty and a large field of view at the same time. The horizontal field of view of each fisheye objective is designed to be 100°. The output image height of each fisheye objective is matched with the signal input end face of the fiber optic image transmission bundle.

[0014] Each of the fisheye objectives has an optical modulation transfer function greater than 0.8 at the limiting resolution of the fiber optic image bundle;

[0015] The illumination strip is connected to the side of the observation housing and is used to provide an illumination environment for the fisheye objective lens. The illumination strip is electrically connected to the battery module.

[0016] The battery module is fixedly connected to the observation shell;

[0017] The observation shell is connected to the working end of the vertical displacement platform.

[0018] Furthermore, the lighting strip includes a flexible PCB substrate, multiple LED beads, and a diffusion homogenization film;

[0019] The flexible PCB substrate is fixedly connected to the side of the observation shell, and multiple LED beads are uniformly connected to the flexible PCB substrate. The multiple LED beads are electrically connected to the battery module. The diffusion homogenization film covers the outside of the multiple LED beads for uniform illumination. The emission wavelength of the multiple LED beads is 400nm-1000nm.

[0020] Furthermore, the optical fiber image transmission bundle includes four split optical fiber bundles and a combined optical fiber bundle. The cross-sections of the four split optical fiber bundles and the combined optical fiber bundle are all rectangular, and they are arranged in a hexagonal structure. The incident end of each split optical fiber bundle is connected to a fisheye objective lens, and the four split optical fiber bundles are coupled to the combined optical fiber bundle.

[0021] Each of the split fiber bundles has a cross-sectional dimension of 5mm×5mm, the combined fiber bundle has a cross-sectional dimension of 10mm×10mm, the numerical aperture of the split fiber bundles and the combined fiber bundles is 0.6, and the diameter of the single fiber filament in the split fiber bundles and the combined fiber bundles is 15μm.

[0022] The signal output end of the combined optical fiber bundle is connected to the input end of the fine beam splitting and embedded processing module.

[0023] Furthermore, in a static environment, the limiting resolution of the fiber optic image bundle is 38 lp / mm.

[0024] The fine beam splitting and embedded processing module includes a relay coupling lens group, a beam splitting element, a monochrome camera arranged sequentially along the optical path, and an embedded processing system connected to the monochrome camera.

[0025] The relay coupling lens group adopts a dual telecentric lens group structure based on object-side telecentricity and image-side telecentricity, with an object distance of not less than 10 mm and a back cutoff of not less than 10 mm.

[0026] Furthermore, the beam splitter is one of a linear gradient filter, an acousto-optic tunable filter, or a prism-grating-prism type beam splitter;

[0027] Furthermore, the vertical displacement platform includes an observation tripod, a stepper motor, a synchronous belt module, a fixed bracket, and a limit switch; the fixed bracket is the working end of the vertical displacement platform.

[0028] The observation tripod is set up on a ground platform and should be adjusted to be perpendicular to the horizontal plane using a level.

[0029] The synchronous belt module includes a conveyor belt, synchronous pulleys, and a vertical support; the vertical support is fixedly connected to the observation tripod and extends down into the well, and the conveyor belt is connected to the vertical support via two synchronous pulleys;

[0030] The stepper motor is fixedly connected to the observation stand, and its output end is connected to a synchronous pulley. The stepper motor drives the conveyor belt to move through the synchronous pulley.

[0031] The conveyor belt is connected to the observation housing via a fixed bracket, and a limiting hole is provided on the observation housing, through which the vertical bracket passes.

[0032] The limit switch is located at the bottom of the vertical support to prevent the observation shell from mechanically overtraveling.

[0033] This invention also provides a method for in-situ spectral flexible imaging panoramic observation of soil profiles, characterized in that it uses the aforementioned in-situ spectral flexible imaging panoramic observation device for soil profiles, and includes the following steps:

[0034] Step 1: Excavate a cylindrical deep well in the region of interest, fix the panoramic observation module to the working end of the vertical displacement platform, and set the vertical displacement platform along the soil profile below the well.

[0035] Step 2: According to the requirements, collect the location of the soil profile in the well, move the working end of the vertical displacement platform up / down, and at the same time move the panoramic observation module to the location where the soil profile image information needs to be collected;

[0036] Step 3: Collect full-view spatial image information of the underground soil profile at the location through the panoramic observation module, and transmit the full-view spatial image information of the underground soil profile to the fine beam splitting and embedded processing module through the optical fiber image transmission bundle for embedding processing to obtain multi-parameter soil inversion mapping.

[0037] Furthermore, in step 2, the formula for determining the moving speed v of the working end of the upward / downward vertical displacement platform is:

[0038] v=PixelNumber×PixelSize×FrameRate×10 -3 (mm / s);

[0039] In the formula, PixelNumber represents the number of pixels swept across in a single frame of the monochrome camera, PixelSize represents the detector pixel size of the monochrome camera, and FrameRate represents the frame rate of the monochrome camera.

[0040] The beneficial effects of this invention are:

[0041] (1) This invention provides a soil profile in-situ spectral flexible imaging panoramic observation device and observation method, which transforms the traditional mode of soil parameter monitoring from "destructive, discrete and lagging" to a new paradigm of perception that is "in-situ, continuous and full-view", providing a reliable data foundation for applications such as agricultural management, ecological protection and disaster early warning.

[0042] (2) This invention provides a soil profile in-situ spectral flexible imaging panoramic observation device and observation method, which can realize panoramic observation, monitor the vertical and horizontal distribution of soil physical, chemical and biological parameters, reduce observation bias caused by spatial heterogeneity, comprehensively analyze soil condition, accurately identify potential problems (such as pollution diffusion, uneven fertility), and improve the scientific nature of decision-making.

[0043] (3) The present invention provides a soil profile in-situ spectral flexible imaging panoramic observation device and observation method, which can realize in-situ continuous observation, acquire dynamic data in real time, accurately reflect the trend of soil parameter changes, and improve monitoring efficiency and data time continuity. Attached Figure Description

[0044] Figure 1 This is a schematic diagram of the usage state structure of an embodiment of the in-situ spectral flexible imaging panoramic observation device for soil profile provided by the present invention;

[0045] Figure 2 This is a schematic diagram of the structure of the surround observation module in an embodiment of the in-situ spectral flexible imaging surround observation device for soil profile provided by the present invention;

[0046] Figure 3 This is a diagram illustrating the composition of the fine spectral dispersion and embedded processing module in an embodiment of the in-situ spectral flexible imaging panoramic observation device for soil profiles provided by the present invention.

[0047] Figure 4 This is a diagram of the optical path transmission route in an embodiment of an in-situ spectral flexible imaging panoramic observation device for soil profiles provided by the present invention. Attached image description:

[0049] 1-Surround observation module, 101-Fisheye objective lens, 102-Illumination strip, 103-Battery module, 104-Observation housing; 2-Fiber optic image transmission bundle; 3-Fine beam splitting and embedded processing module, 301-Relay coupling lens group, 302-Beam splitting element, 303-Black and white camera, 304-Embedded processing system; 4-Vertical displacement platform, 401-Observation tripod, 402-Stepper motor, 403-Synchronous belt module, 404-Fixed bracket, 405-Limit switch. Detailed Implementation

[0050] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings and embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0051] This embodiment describes a flexible in-situ spectral imaging and panoramic observation device for soil profiles, such as... Figure 1As shown, the system includes a panoramic observation module 1, an optical fiber image transmission bundle 2, a fine beam splitting and embedded processing module 3, and a vertical displacement platform 4. The vertical displacement platform 4 is set along the underground soil profile, and its working end moves up and down along the underground soil profile. The panoramic observation module 1 is connected to the working end of the vertical displacement platform 4 and is used to acquire full-view spatial image information of the underground soil profile. The signal input end of the optical fiber image transmission bundle 2 is connected to the signal output end of the panoramic observation module 1 and is used to receive and transmit full-view spatial image information of the underground soil profile. The input end of the fine beam splitting and embedded processing module 3 is connected to the signal output end of the optical fiber image transmission bundle 2 and is used to receive full-view spatial image information of the underground soil profile and perform embedded processing to obtain multi-parameter soil inversion mapping.

[0052] like Figure 2 As shown, the panoramic observation module 1 includes four fisheye lenses 101, an illumination strip 102, a battery module 103, and an observation housing 104. The signal output ends of the four fisheye lenses 101 are connected to the signal input ends of the fiber optic image bundle 2. All four fisheye lenses 101 are anti-long-range structures and are fixedly connected to the same plane on the observation housing 104. They are used to collect panoramic spatial image information of the soil. The horizontal field of view of each fisheye lens 101 is designed to be 100°. The image height is matched with the signal input end face of the fiber optic image bundle 2. The optical modulation transfer function of each fisheye lens 101 is greater than 0.8 at the limit resolution of the fiber optic image bundle 2. At the same time, in order to ensure the uniformity of the brightness of the image surface, the relative illumination of each field of view needs to be as large as possible. An illumination strip 102 is connected to the side of the observation housing 104 to provide illumination for the fisheye objective lens 101. The illumination strip 102 is electrically connected to the battery module 103, which (including a constant current source circuit) provides stable power to the illumination strip 102. The illumination strip 102 includes a flexible PCB substrate, multiple LED beads, and a diffusion and homogenizing film. The flexible PCB substrate is fixedly connected to the side of the observation housing 104. Multiple LED beads are evenly connected to the flexible PCB substrate and electrically connected to the battery module 103. The diffusion and homogenizing film covers the multiple LED beads for uniform illumination. The battery module 103 is fixedly connected to the observation housing 104. The observation housing 104 is connected to the vertical displacement platform 4.

[0053] The LED chips used must be broadband lighting chips with a wavelength of 400nm-1000nm to match the spectral input of the fine spectral dispersion and embedded processing module 3. Broadband chips with a wavelength of 400nm-1000nm from Guohong Optoelectronics Technology Co., Ltd. can be selected.

[0054] In this embodiment, the fiber optic image transmission bundle 2 includes four split fiber bundles and a combining fiber bundle. The cross-sections of both the split and combining fiber bundles are rectangular, and they are arranged in a hexagonal structure. Each split fiber bundle has an incident end connected to a fisheye objective lens 101, and the four split fiber bundles are coupled to the combining fiber bundle. The cross-sectional dimensions of each split fiber bundle are 5mm × 5mm, and the cross-sectional dimensions of the combining fiber bundle are 10mm × 10mm. The numerical aperture of both the split and combining fiber bundles is 0.6, and the diameter of the individual fiber filaments in both bundles is 15μm. The signal output end of the combining fiber bundle is the input end of the fine beam splitting and embedded processing module 3. Under static conditions, the limiting resolution of the fiber optic image transmission bundle 2 is 38 lp / mm.

[0055] In this embodiment, as Figure 3 As shown, the fine beam splitting and embedded processing module 3 includes a relay coupling lens group 301, a beam splitting element 302, and a monochrome camera 303 arranged sequentially along the optical path, and also includes an embedded processing system 304 connected to the monochrome camera 303; the relay coupling lens group 301 is used to image the stitched image (10mm×10mm) from the output end of the fiber optic image bundle 2 onto the detector of the monochrome camera 303, requiring a magnification of 1.0; in order to maximize the reception of light from the output end of the fiber optic image bundle 2... To ensure efficient and precise beam splitting by the beam splitter 302, the relay coupling lens group 301 adopts a dual telecentric lens group structure based on object-side telecentricity and image-side telecentricity. Furthermore, considering subsequent processing and assembly, the object distance and back cutoff of the relay coupling lens group 301 are no less than 10mm. The beam splitter 302 can be one of a linear graded filter, an acousto-optic tunable filter, or a prism-grating-prism type. The monochrome camera 303 can be the Daheng Imaging ME2P-1840-21U3M. The embedded processing system 304 can be the FIREFLY ROC-RK3588-RT development board.

[0056] The end face of the split fiber bundle of the fiber image bundle 2 is the incident end. The image information is incident from the fisheye objective lens 101 to the end face of the split fiber bundle. After being bundled in the combined fiber bundle, it is incident to the beam splitter 302 through the relay coupling lens group 301 and finally imaged on the detector of the black and white camera 303.

[0057] like Figure 1As shown, the vertical displacement platform 4 includes an observation tripod 401, a stepper motor 402, a synchronous belt module 403, a fixed bracket 404, and a limit switch 405. The fixed bracket 404 is the working end of the vertical displacement platform 4. The observation tripod 401 is erected on a ground platform and should be adjusted to be perpendicular to the horizontal plane using a level. The synchronous belt module 403 includes a conveyor belt, synchronous pulleys, and a vertical support. The vertical support is fixedly connected to the observation tripod 401 and extends downhole. The conveyor belt is connected to the vertical support via two synchronous pulleys. The stepper motor 402 is fixedly connected to the observation tripod 401, and its output end is connected to a synchronous pulley. The stepper motor 402 drives the conveyor belt to move via the synchronous pulley. The conveyor belt is connected to the observation housing 104 via the fixed bracket 404, and a limit hole is provided on the observation housing 104. The vertical support passes through the limit hole. The limit switch 405 is located at the bottom of the vertical support to prevent the observation housing 104 from mechanically overtraveling.

[0058] The vertical displacement platform 4 can be selected from the RXP40 series of Chengdu Liandong Ruixin Technology Co., Ltd.

[0059] For safety reasons, choose a stepper motor with a brake, such as the 57 stepper motor, to prevent damage to the equipment from falling due to sudden power failure.

[0060] This embodiment also provides an in-situ spectral flexible imaging panoramic observation method for soil profiles, including the following steps:

[0061] Step 1: Excavate a cylindrical deep well in the region of interest, fix the panoramic observation module 1 to the working end of the vertical displacement platform 4, and set the vertical displacement platform 4 along the soil profile below the well.

[0062] Step 2: According to the requirements, collect the location of the soil profile in the well, move the working end of the vertical displacement platform 4 up / down, and at the same time move the panoramic observation module 1 to the location where the soil profile image information needs to be collected;

[0063] The formula for determining the moving speed v of the working end of the vertical displacement platform 4, which moves upward / downward, is as follows:

[0064] v=PixelNumber×PixelSize×FrameRate×10 -3 (mm / s);

[0065] In the formula, PixelNumber represents the number of pixels swept by the monochrome camera 303 in a single frame, PixelSize represents the detector pixel size of the monochrome camera 303, and FrameRate represents the frame rate of the monochrome camera 303.

[0066] Step 3: Acquire full-view spatial image information of the underground soil profile at the current location through the panoramic observation module 1, and transmit the full-view spatial image information of the underground soil profile to the fine beam splitting and embedded processing module 3 for embedding processing through the fiber optic image transmission bundle 2. The transmission optical path is as follows: Figure 4 As shown, the soil multi-parameter inversion map is obtained.

[0067] During the image information acquisition process, the vertical displacement platform 4 pushes and sweeps from top to bottom (or from bottom to top) at a certain speed to achieve continuous full-view observation of the soil profile.

[0068] The image sequence received by the detector of the black and white camera 303 is interpreted and reconstructed in real time by the embedded processing system 304 to generate a hyperspectral image cube of a soil profile at a specific depth and with full view.

[0069] The above description is merely a specific embodiment of the present invention and a comparison of the effects of the specific embodiments with relevant comparative examples. However, the scope of protection of the present invention is not limited thereto. Any changes or substitutions within the technical scope disclosed in the present invention should be covered within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A flexible in-situ spectral imaging and panoramic observation device for soil profiles, characterized in that: It includes a panoramic observation module (1), an optical fiber image transmission bundle (2), a fine beam splitting and embedded processing module (3), and a vertical displacement platform (4); The vertical displacement platform (4) is set along the underground soil profile, and the working end can move up and down along the underground soil profile; The surround view observation module (1) is connected to the working end of the vertical displacement platform (4) and is used to collect full-view spatial image information of the underground soil profile; The signal input end of the optical fiber image transmission bundle (2) is connected to the signal output end of the panoramic observation module (1) to receive and transmit full-view spatial image information of the underground soil profile; The input end of the fine beam splitting and embedded processing module (3) is connected to the signal output end of the optical fiber image transmission bundle (2) to receive full-view spatial image information of the underground soil profile and perform embedded processing to obtain multi-parameter inversion mapping of the soil.

2. The in-situ spectral flexible imaging panoramic observation device for soil profiles according to claim 1, characterized in that: The surround view observation module (1) includes four fisheye lenses (101), an illumination strip (102), a battery module (103), and an observation shell (104); The signal output ends of the four fisheye objectives (101) are connected to the signal input end of the fiber optic image bundle (2). The four fisheye objectives (101) are all anti-long-range structures and are fixedly connected to the same plane on the observation shell (104) for collecting the full field-of-view toroidal spatial image information of the soil. The horizontal field of view of each fisheye objective (101) is designed to be 100°. The output image height of each fisheye objective (101) is matched with the signal input end face of the fiber optic image bundle (2). Each of the fisheye objectives (101) has an optical modulation transfer function value greater than 0.8 at the limiting resolution of the fiber optic image bundle (2); The illumination strip (102) is connected to the side of the observation housing (104) to provide an illumination environment for the fisheye objective (101), and the illumination strip (102) is electrically connected to the battery module (103); The battery module (103) is fixedly connected to the observation shell (104); The observation shell (104) is connected to the working end of the vertical displacement platform (4).

3. The in-situ spectral flexible imaging panoramic observation device for soil profiles according to claim 2, characterized in that: The lighting strip (102) includes a flexible PCB substrate, multiple LED beads, and a diffusion homogenization film; The flexible PCB substrate is fixedly connected to the side of the observation shell (104), and a plurality of LED beads are uniformly connected on the flexible PCB substrate. The plurality of LED beads are electrically connected to the battery module (103). The diffusion homogenization film covers the outside of the plurality of LED beads for uniform illumination. The emission wavelength of the plurality of LED beads is 400nm-1000nm.

4. The in-situ spectral flexible imaging panoramic observation device for soil profiles according to claim 2, characterized in that, The optical fiber image bundle (2) includes four separate optical fiber bundles and a combined optical fiber bundle. The cross-sections of the four separate optical fiber bundles and the combined optical fiber bundle are all rectangular, and the arrangement is a hexagonal structure. The incident end of each of the separate optical fiber bundles is connected to a fisheye objective lens (101), and the four separate optical fiber bundles are coupled to the combined optical fiber bundle. Each of the split fiber bundles has a cross-sectional dimension of 5mm×5mm, the combined fiber bundle has a cross-sectional dimension of 10mm×10mm, the numerical aperture of the split fiber bundles and the combined fiber bundles is 0.6, and the diameter of the single fiber filament in the split fiber bundles and the combined fiber bundles is 15μm. The signal output end of the combined optical fiber bundle is connected to the input end of the fine beam splitting and embedded processing module (3).

5. The in-situ spectral flexible imaging panoramic observation device for soil profiles according to claim 1, characterized in that: In a static environment, the limiting resolution of the fiber optic image bundle (2) is 38 lp / mm.

6. The in-situ spectral flexible imaging panoramic observation device for soil profiles according to claim 1, characterized in that: The fine beam splitting and embedded processing module (3) includes a relay coupling lens group (301), a beam splitting element (302), a black and white camera (303) arranged sequentially along the optical path, and an embedded processing system (304) connected to the black and white camera (303). The relay coupling lens group (301) adopts a dual telecentric lens group structure based on object-side telecentricity and image-side telecentricity, with an object distance of not less than 10 mm and a back cutoff of not less than 10 mm.

7. The in-situ spectral flexible imaging panoramic observation device for soil profiles according to claim 6, characterized in that, The beam splitter (302) is one of a linear gradient filter, an acousto-optic tunable filter, or a prism-grating-prism type beam splitter.

8. The in-situ spectral flexible imaging panoramic observation device for soil profiles according to claim 2, characterized in that, The vertical displacement platform (4) includes an observation tripod (401), a stepper motor (402), a synchronous belt module (403), a fixed bracket (404), and a limit switch (405); the fixed bracket (404) is the working end of the vertical displacement platform (4); The observation tripod (401) is erected on a ground platform and should be adjusted to be perpendicular to the horizontal plane using a level. The synchronous belt module (403) includes a conveyor belt, synchronous pulleys and a vertical support; the vertical support is fixedly connected to the observation tripod (401) and extends downhole, and the conveyor belt is connected to the vertical support through two synchronous pulleys; The stepper motor (402) is fixedly connected to the observation stand (401), and its output end is connected to a synchronous pulley. The stepper motor (402) drives the conveyor belt to move through the synchronous pulley. The conveyor belt is connected to the observation housing (104) via a fixed bracket (404), and a limiting hole is provided on the observation housing (104), through which the vertical bracket passes. The limit switch (405) is located at the bottom of the vertical support to prevent the observation housing (104) from mechanically overtraveling.

9. A method for in-situ spectral flexible imaging panoramic observation of soil profiles, characterized in that, Using the in-situ spectral flexible imaging panoramic observation device for soil profiles as described in any one of claims 1-8 includes the following steps: Step 1: Dig a cylindrical deep well in the area of ​​interest, fix the panoramic observation module (1) to the working end of the vertical displacement platform (4), and set the vertical displacement platform (4) along the soil profile below the well. Step 2: Collect the location of the soil profile in the well according to the requirements, move the working end of the vertical displacement platform (4) up / down, and at the same time move the panoramic observation module (1) to the location where the soil profile image information needs to be collected; Step 3: Collect the full-view spatial image information of the underground soil profile at the location through the panoramic observation module (1), and transmit the full-view spatial image information of the underground soil profile to the fine beam splitting and embedded processing module (3) through the fiber optic image transmission bundle (2) for embedding processing to obtain the soil multi-parameter inversion map.

10. The in-situ spectral flexible imaging panoramic observation method for soil profiles according to claim 9, characterized in that, In step 2, the formula for determining the moving speed v of the working end of the upward / downward vertical displacement platform (4) is: v=PixelNumber×PixelSize×FrameRate×10 -3 (mm / s) In the formula, PixelNumber represents the number of pixels swept by the monochrome camera (303) in a single frame, PixelSize represents the detector pixel size of the monochrome camera (303), and FrameRate represents the frame rate of the monochrome camera (303).

Images