Portable acquisition device of tunnel model

Abstract

The application discloses a portable acquisition device of a tunnel model, which is used for acquiring images in a tunnel. The portable acquisition device comprises a backpack body, a first side of the backpack body is connected with a human body, a support frame is arranged on a second side of the backpack body which is away from the human body, a plurality of image acquisition devices are arranged on the support frame, and cameras of the image acquisition devices are directed to the direction of a tunnel wall. A synchronous control module is detachably connected with the backpack body, the synchronous control module is arranged on the same side of the support frame, an input end of the synchronous control module is electrically connected with a control module, a plurality of output ends of the synchronous control module are respectively electrically connected with the plurality of image acquisition devices, and a terminal module is used for receiving image information of the plurality of image acquisition devices. The portable acquisition device can acquire image units in the tunnel while walking, can enter the tunnel together with the human body, does not need to be transported alone, saves acquisition time, and improves acquisition efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of tunnel simulation test, in particular to a portable acquisition device for a tunnel model. Background Art

[0002] At present, with the development of subways, railways, and highways, the excavation and construction of tunnels are gradually increasing. However, since most tunnels are located inside rock and soil, they are affected by many external factors and may cause hidden dangers such as cracking and deformation. In order to ensure the long-term operation of tunnels, internal tunnel modeling research is essential.

[0003] Different tunnels have different internal conditions, and pictures of different tunnels need to be collected for modeling research. Currently, all pictures are taken manually, which is time-consuming. When the overlap rate of the pictures cannot be guaranteed, it will affect the subsequent modeling and the accuracy of tunnel modeling. If the pictures are collected by equipment, the existing equipment is large-scale equipment, and the transportation process is time-consuming and labor-intensive, which prolongs the collection time, resulting in low collection efficiency, and thus affecting the efficiency of subsequent modeling. Summary of the Invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art or related art.

[0005] In view of this, the present invention provides a portable acquisition device for a tunnel model. Through the setting of a support frame, multiple image collectors are set on the support frame. The staff can carry the support frame and collect image units in the tunnel while walking according to actual conditions. The portable acquisition device can enter the tunnel with the person and does not need to be transported separately, saving acquisition time and thus improving acquisition efficiency.

[0006] Specifically, the following technical solutions are included:

[0007] The present invention provides a portable acquisition device for a tunnel model, which is used for acquiring images inside a tunnel. The portable acquisition device comprises:

[0008] A backpack body, wherein a first side of the backpack body is in contact with a human body;

[0009] A support frame is provided on a second side of the backpack body facing away from the human body, and a plurality of image collectors are provided on the support frame, wherein the cameras of the image collectors face toward the tunnel wall;

[0010] a synchronization control module, detachably connected to the backpack body, the synchronization control module being disposed on the same side as the support frame, the input end of the synchronization controller being electrically connected to the control module, and the multiple output ends of the synchronization controller being electrically connected to the multiple image collectors;

[0011] The terminal module is used to receive image information from a plurality of image collectors.

[0012] Optionally, the portable collection device further includes:

[0013] A power-off control module, wherein a plurality of the power-off control modules are arranged at the output end of the synchronization control module, and are used to connect or disconnect the electrical connection between the output end and the image collector.

[0014] Optionally, a receiving iron sheet is provided in the output end of the synchronization control module, and a through hole is provided on the receiving iron sheet. The power-off control module includes:

[0015] A housing is provided on one side of the output end of the synchronous control module, the housing corresponds to the output end, a connecting hole is provided on the housing, a cylindrical knob is provided in the connecting hole, a portion of the cylindrical knob is located inside the housing, a gear is provided on one end of the cylindrical knob located inside the housing, and the cylindrical knob is provided perpendicular to the synchronous control module;

[0016] A connecting iron sheet is provided with connecting teeth at one end, the connecting teeth are engaged with the gear, one end of the connecting iron sheet away from the connecting teeth matches the through hole, and the connecting iron sheet is arranged perpendicular to the receiving iron sheet.

[0017] Optionally, the support frame is annular, and the axis of the support frame is perpendicular to the backpack body.

[0018] Optionally, a track is provided on the support frame, and the track is located on the side of the support frame away from the backpack body, or the track is located on the outer periphery of the support frame, and the image collector is connected to the track through an electric slider, and the electric slider is communicatively connected to the control module.

[0019] Optionally, the image collector is fixedly connected to the electric slider via a bracket, the bracket includes a spherical head and a clamping assembly connected to each other, one end of the spherical head away from the clamping assembly is fixedly connected to the electric slider, and the clamping assembly is used to clamp the image collector.

[0020] Optionally, the clamping assembly includes:

[0021] The first clamping plate includes a first transverse plate and a first vertical plate arranged perpendicular to the first transverse plate, wherein an end of the first transverse plate facing away from the first vertical plate is provided with a receiving groove;

[0022] The second splint includes a second horizontal plate and a second vertical plate arranged perpendicular to the second horizontal plate. The second horizontal plate is arranged in the accommodating groove. One end of the second horizontal plate is away from the second vertical plate and is fixedly connected to the bottom of the accommodating groove through an elastic member. The image collector is arranged between the first vertical plate and the second vertical plate.

[0023] Optionally, the spherical holder comprises:

[0024] A base is fixedly connected with the electric slide block, and a groove is arranged on an end of the base away from the electric slide block for accommodating a rotating sphere, and part of the rotating sphere protrudes from the base;

[0025] A connecting seat is arranged at an end of the rotating sphere protruding from the groove, and an end of the connecting seat away from the rotating sphere is fixedly connected with the clamping assembly.

[0026] Optionally, the portable acquisition device further comprises:

[0027] A support seat is arranged below the backpack body, and the support seat comprises a vertical part and a horizontal part arranged perpendicularly to the vertical part, the vertical part is located directly below the backpack body, one side of the vertical part is aligned with the first side of the backpack body, the other side of the vertical part protrudes from the second side of the backpack body, the horizontal part extends towards the second side, and the support frame is fixedly connected with the part of the vertical part protruding from the second side.

[0028] Optionally, the portable acquisition device further comprises:

[0029] An illumination module is connected with an end of the horizontal part away from the vertical part, and a light-emitting part of the illumination module faces the plurality of image acquisition devices.

[0030] The portable acquisition device for tunnel modeling provided by the embodiment of the application is used for image acquisition in a tunnel, and comprises a backpack body and a support frame arranged on one side of the backpack body, a plurality of image acquisition devices are arranged on the support frame, a control module is connected with the plurality of image acquisition devices through a synchronous control module, and synchronous image acquisition of the plurality of image acquisition devices is controlled, different overlap rates of different tunnels can be acquired according to different requirements of tunnel modeling, and a more accurate tunnel model can be acquired, in use, each part is placed in the backpack body, the portable acquisition device can go to a tunnel to be acquired and modeled together with a worker, transportation time is reduced, and acquisition efficiency is improved, the portable acquisition device is directly assembled after arriving at the scene, the structure is simple, assembly is convenient, and acquisition efficiency is further improved, three-dimensional modeling of the tunnel is performed according to acquired images, tunnel working conditions are simulated after tunnel modeling is simulated, damage of the tunnel and the like are acquired, and disasters can be avoided in advance.

[0031] The above description is only a summary of the technical scheme of the application, in order to more clearly understand the technical means of the application, the specific embodiments of the application can be implemented according to the content of the description, and in order to make the above and other purposes, characteristics and advantages of the application more obvious and easy to understand, the following specific embodiments of the application are described. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0033] Figure 1 is a schematic diagram of a portable acquisition device for a tunnel model according to an embodiment of the present invention;

[0034] Figure 2 A side view of a portable acquisition device for a tunnel model according to an embodiment of the present invention;

[0035] Figure 3 is a schematic diagram of a synchronization control module according to an embodiment of the present invention;

[0036] Figure 4 is an internal schematic diagram of a power-off control module according to an embodiment of the present invention;

[0037] Figure 5 is a schematic diagram of a bracket according to one embodiment of the present invention;

[0038] Figure 6 is a schematic diagram of a clamping assembly according to one embodiment of the present invention;

[0039] Figure 7 is a schematic diagram of a spherical pan / tilt head according to an embodiment of the present invention;

[0040] Figure 8 is a schematic diagram of a lighting module according to an embodiment of the present invention;

[0041] Figure 9 Schematic diagram of the overlap rate of an image collector according to an embodiment of the present invention.

[0042] in, Figures 1 to 9 The corresponding relationship between the reference numerals and component names is as follows:

[0043] 10 backpack body, 20 support frame, 201 track, 30 synchronization control module, 301 input end, 302 output end, 303 receiving iron sheet, 40 power off control module, 401 shell, 402 connecting iron sheet, 403 cylindrical knob, 404 gear, 50 bracket, 501 spherical pan head, 5011 base, 5012 connecting seat, 5013 rotating sphere, 502 clamping assembly, 5021 first horizontal plate, 5022 first vertical plate, 5023 second horizontal plate, 5024 second vertical plate, 5025 accommodating groove, 5026 elastic member, 60 support seat, 601 vertical portion, 602 horizontal portion, 70 lighting module, 80 image collector, 90 electric slider. DETAILED DESCRIPTION

[0044] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0045] Before further describing the embodiments of the present invention in detail, the directional terms involved in the embodiments of the present invention, such as "upper part", "lower part" and "side part", do not limit the scope of protection of the present invention.

[0046] To make the technical solutions and advantages of the present invention more clear, the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

[0047] Figure 1 is a schematic diagram of a portable acquisition device for a tunnel model according to an embodiment of the present invention; Figure 2 A side view of a portable acquisition device for a tunnel model according to an embodiment of the present invention; Figure 3 FIG. 4 is a schematic diagram of a synchronization control module according to an embodiment of the present invention.

[0048] like Figures 1 to 3 As shown, one embodiment of the present invention provides a portable acquisition device for a tunnel model, which is used to acquire images inside the tunnel. The portable acquisition device includes:

[0049] The backpack body 10 has a first side connected to the human body;

[0050] The support frame 20 is provided on the second side of the backpack body 10 away from the human body. The support frame 20 is provided with a plurality of image collectors 80, and the cameras of the image collectors 80 face the tunnel wall.

[0051] The synchronous control module 30 is detachably connected to the backpack body 10. The synchronous control module 30 is arranged on the same side as the support frame 20. The input end 301 of the synchronous controller 30 is electrically connected to the control module, and the multiple output ends 302 of the synchronous controller 30 are respectively electrically connected to the multiple image collectors 80.

[0052] Among them, the portable acquisition device includes a backpack body 10 and a support frame 20 arranged on one side of the backpack body 10. A plurality of image collectors 80 are provided on the support frame 20. The control module is connected to the plurality of image collectors 80 through the synchronization control module 30 to control the synchronous image acquisition of the plurality of image collectors 80. It can obtain different overlapping rates of different tunnels according to different requirements of tunnel modeling, and thus obtain a more accurate tunnel model. When in use, the various components are first placed in the backpack body 10. The portable acquisition device can go to the tunnel to be collected and modeled with the staff, reducing transportation time and improving acquisition efficiency. After arriving at the site, the entire portable acquisition device can be directly assembled. It has a simple structure and is easy to assemble, which further improves the acquisition efficiency. The tunnel is three-dimensionally modeled according to the acquired image. After simulating the tunnel modeling, the tunnel working conditions are simulated in other software to obtain tunnel damage and other conditions, which helps to avoid disasters in advance.

[0053] It should be noted that the image collector 80 is usually a smartphone. By controlling the simultaneous shooting of multiple smartphones through the synchronization control module 30, images of the tunnel inner wall at different positions in the same time period can be obtained. At the same time, the images collected by two adjacent image collectors have a certain overlap rate, which is more conducive to the accuracy of tunnel modeling.

[0054] Furthermore, the backpack body 10 includes a main body and a backpack strap disposed on a first side of the main body (which may also be provided with a handle), and the synchronization controller 30 is disposed on a side of the main body facing away from the backpack strap, i.e., a second side of the main body. The main body has a storage space for accommodating some disassembled parts, making it easier for staff to carry them simultaneously. The synchronization controller 30 is detachably connected to the backpack body 10. A hard plate with bolt holes can be provided on the second side of the main body, and the synchronization controller 30 is detachably connected to the main body via bolts; alternatively, the detachable connection can be achieved via connecting grooves and connecting protrusions, which will not be given as examples here.

[0055] Among them, the terminal module is usually a notebook or a mobile phone, which communicates with multiple image collectors 80 to obtain real-time image information of multiple image collectors 80 (similar to video communication). Then, according to the situation of the terminal module, the control module controls the synchronous shooting of multiple image collectors 80. That is to say, when the real-time position of the image collected by each image collector 80 meets the modeling requirements, the control module controls the multiple image collectors 80 to shoot the current position and collect tunnel image information at the current position, which is helpful for subsequent tunnel modeling.

[0056] It should be noted that the tunnel image information finally collected is uniformly transmitted to the 3D reconstruction software, which can be Metashape, RealityCapture, COLMAP, Bundler, or VisualSFM. These softwares all provide different functions and features, and users can choose the appropriate software according to their needs. In this embodiment, Metashape software is often used. Metashape software has the following advantages: easy to use, even without any experience, users can quickly learn how to use it; high precision, using advanced computer vision technology, and can generate high-precision 3D reconstruction models; multi-platform support, Metashape software can run on Windows, MacOS, and Linux; efficient processing capability, Metashape software supports multi-core CPU acceleration, and can generate 3D reconstruction models of large-scale data in a relatively short time; multiple output formats, Metashape software supports output of multiple file formats, including OBJ, PLY, VRML, DXF, etc., which allows users to easily import data into other software for subsequent analysis and processing. In summary, Metashape software is an easy-to-use and powerful 3D reconstruction software suitable for users in different fields to perform 3D modeling and reconstruction work.

[0057] In a feasible embodiment, the portable collection device further includes:

[0058] The power-off control module 40 , wherein multiple power-off control modules 40 are provided at the output end 302 of the synchronization control module 30 , and are used to connect or disconnect the electrical connection between the output end and the image collector 80 .

[0059] Among them, the control module and multiple image collectors 80 are connected or disconnected through the power-off control module 40. That is to say, there are 8 output terminals 302 in the drawings of this embodiment (the number of output terminals 302 can be increased or decreased as needed, and this application only uses 8 output terminals 302 as an example for explanation), that is, 8 image collectors 80 are connected. Usually, during the acquisition process, it is sometimes not necessary to use 8 image collectors 80 at the same time. At this time, it is necessary to turn off several groups of image collectors 80 and use other image collectors 80 for acquisition, which is similar to the situation of separate switches for multiple sockets.

[0060] Figure 4 FIG. 4 is an internal schematic diagram of a power-off control module according to an embodiment of the present invention.

[0061] In one possible implementation, Figure 4 As shown, a receiving iron sheet 303 is provided in the output end 301 of the synchronous control module 30, and a through hole is provided on the receiving iron sheet 303. The power-off control module 40 includes:

[0062] The housing 401 is provided on one side of the output terminal 302 of the synchronous control module 30. The housing 401 corresponds to the output terminal 302. The housing 401 is provided with a connection hole. A cylindrical knob 403 is provided in the connection hole. Part of the cylindrical knob 403 is located inside the housing 401. A gear 404 is provided on one end of the cylindrical knob 403 located inside the housing 401. The cylindrical knob 403 is arranged perpendicular to the synchronous control module 30.

[0063] The connecting iron sheet 402 has a connecting tooth at one end, which meshes with the gear 404 . The end of the connecting iron sheet 402 away from the connecting tooth matches the through hole. The connecting iron sheet 402 is vertically arranged to the receiving iron sheet 303 .

[0064] Among them, the connecting iron sheet 402 is set perpendicular to the axis of the cylindrical knob 403. When the cylindrical knob 403 is rotated counterclockwise, the cylindrical knob 403 drives the gear 404 to rotate, and the gear 404 drives the connecting iron sheet 402 where the connecting teeth are located to move downward, and the connecting iron sheet 402 is inserted into the through hole of the receiving iron sheet 303 to realize the connection of the circuit metal plate. Conversely, when the cylindrical knob 403 is rotated clockwise, the cylindrical knob 403 drives the gear 404 to rotate, and the gear 404 drives the connecting iron sheet 402 where the connecting teeth are located to move upward, and the connecting iron sheet 402 is pulled out from the through hole of the receiving iron sheet 303 to realize the disconnection of the circuit metal plate, thereby realizing the on and off of each image collector 80. Furthermore, the multiple output terminals 302 are connected in parallel, so that the connection and disconnection of each output terminal 302 does not affect the connection and disconnection of other output terminals 302 with the image collector 80. The synchronization control module 30 can be rechargeable or have a replaceable battery to provide power for the synchronization control module 30.

[0065] It should be noted that a warning light can also be provided on the housing 401. When the connecting iron sheet 402 is inserted into the through-hole of the receiving iron sheet 303, the circuit is connected, and the power from the synchronous control module 30 is also transferred to the warning light. The warning light illuminates, indicating that the output terminal 302 is connected, and the image collector 80 on the output terminal 302 can be controlled by the control module. When the connecting iron sheet 402 is removed from the through-hole, the circuit is disconnected, and the indicator light goes off, and the image collector 80 on the output terminal 302 cannot be controlled by the control module. Alternatively, a switch can be used to individually control each output terminal 302. Any method that can achieve independent control of multiple output terminals 302 is suitable and will not be described here.

[0066] The receiving iron sheet 303 is a metal structure that connects the circuit of the output terminal 302. Due to the through hole, even if the image collector 80 is inserted, the control module cannot control the image collector 80. Therefore, each output terminal 302 is equipped with a separate power-off control module 40. When the connecting iron sheet 402 is inserted into the through hole, the circuit is connected, thereby realizing the connection and control between the control module and the image collector 80. Furthermore, the connection between the output terminal 302 and the image collector 80 can also be controlled by electric contact. This will not be repeated here.

[0067] In a feasible embodiment, the support frame 20 is annular, and the axis of the support frame 20 is perpendicular to the backpack body 10 .

[0068] Among them, the support frame 20 is set in a circular ring shape, which can facilitate the installation of multiple smartphones (image collectors 80) in 360°, which is more conducive to multi-directional collection of multiple smartphones, improves the comprehensiveness of tunnel image collection, and thus improves the reliability of subsequent analysis and research on the tunnel model obtained by collecting images.

[0069] It should be noted that the annular support frame 20 is arranged around the backpack body 10, which can improve the balance and stability of the annular frame when in use. At the same time, when the staff carries the portable collection device, the pressure applied is more balanced, which is less likely to cause local fatigue of the staff.

[0070] Furthermore, the axis of the support frame 20 is perpendicular to the backpack body 10 , which means that the deflection angle of the support frame 20 toward the backpack body 10 or away from the backpack body 10 does not exceed 5°.

[0071] In a feasible embodiment, a track 201 is provided on the support frame 20, and the track 201 is located on the side of the support frame 20 away from the backpack body 10, or the track 201 is located on the outer periphery of the support frame 20, and the image collector 80 is connected to the track 201 through the electric slider 90, and the electric slider 90 is communicatively connected to the control module.

[0072] Among them, a track 201 is provided on the support frame 20, and multiple smartphones are set in the track 201 through the electric slider 90. In this way, according to different conditions in the tunnel, the smartphone (image collector) can be moved to the required position along the circular track 201, and the image collected by the image collector 80 is observed through the terminal module, and the electric slider 90 is controlled to move through the control module to adjust the specific position of the image collector 80, so as to realize the collection of tunnel internal images at different angles in different tunnels, thereby improving the applicability of the portable collection device. At the same time, different overlap rates can be achieved under different requirements to obtain better modeling effects, such as Figure 9 As shown, the thick dotted line portion on the annular portion is the overlap ratio achieved by two adjacent image collectors 80 . Different overlap ratios can be obtained by adjusting different positions of the image collectors 80 according to different needs.

[0073] It should be noted that if Figure 9 As shown, the overlap rate refers to the overlapping part of the images collected by two adjacent image collectors 80. Different overlap rate settings can collect images in different ranges and obtain the required images for different tunnel modeling. The setting is based on the specific requirements of the 3D reconstruction software and will not be repeated here.

[0074] Among them, the electric slider 90 can be powered by a battery. A receiver is provided on the electric slider 90, and a transmitter is provided on the control module. The receiver receives the transmission signal of the transmitter, and then controls each electric slider 90 through the control module to drive the image collector 80 to move on the track 201. The control of the electric slider 90 is a mature technology and is not the focus of protection in this application, so it will not be described in detail.

[0075] Furthermore, the track 201 is located on the side of the support frame 20 away from the backpack body 10, or the track 201 is located on the periphery of the support frame 20, which can make the camera of the image collector 80 face the tunnel wall, which is more conducive to collecting images in the tunnel.

[0076] Figure 5 Schematic diagram of a bracket according to one embodiment of the present invention.

[0077] In one possible implementation, Figure 5 As shown, the image collector 80 is fixedly connected to the electric slider 90 via a bracket 50. The bracket 50 includes a spherical pan-tilt head 501 and a clamping assembly 502 that are connected to each other. The end of the spherical pan-tilt head 501 away from the clamping assembly 502 is fixedly connected to the electric slider 90. The clamping assembly 502 is used to clamp the image collector 80.

[0078] The image collector 80 is fixedly connected with the electric sliding block 90 through the support 50, wherein the support 50 comprises a spherical holder 501 and a clamping assembly 502, the image collector 80 is clamped through the clamping assembly 502, the image collector 80 is convenient to clamp and take off, the detachability is improved, and then in the non-working state, the portable collecting device can realize the volume minimization as far as possible, and the disassembled parts can be placed in the backpack body, so that the portable collecting device can be conveniently carried.

[0079] It should be noted that through the spherical holder 501, the image collector 80 can move along the circumference of the track to collect images in different directions in the tunnel, and the image collector 80 can also rotate in a fixed direction to improve the multi-angle of the tunnel collection pictures and the accuracy of the tunnel collection pictures. Figure 5 The reciprocating swing along the X and Y directions of the middle.

[0080] Figure 6 The schematic view of the clamping assembly according to one embodiment of the present application.

[0081] In a feasible embodiment, as shown in Figure 6 The clamping assembly 502 comprises:

[0082] A first clamping plate comprising a first horizontal plate 5021 and a first vertical plate 5022 arranged perpendicularly to the first horizontal plate 5021, and a receiving groove 5025 is arranged on one end of the first horizontal plate 5021 away from the first vertical plate 5022.

[0083] A second clamping plate comprising a second horizontal plate 5023 and a second vertical plate 5024 arranged perpendicularly to the second horizontal plate 5023, the second horizontal plate 5023 is arranged in the receiving groove 5025, one end of the second horizontal plate 5023 away from the second vertical plate 5024 is fixedly connected with the bottom of the receiving groove 5025 through an elastic member 5026, and the image collector 80 is arranged between the first vertical plate 5022 and the second vertical plate 5024.

[0084] The image collector 80 is clamped through the first clamping plate and the second clamping plate, the image collector 80 is convenient to clamp and take off, the detachability is improved, and then in the non-working state, the portable collecting device can realize the volume minimization as far as possible, and the disassembled parts can be placed in the backpack body 10, so that the portable collecting device can be conveniently carried.

[0085] It should be noted that the first clamping plate includes a first horizontal plate 5021 and a first vertical plate 5022, the first horizontal plate 5021 is provided with a receiving groove 5025, the second clamping plate includes a second horizontal plate 5023 and a second vertical plate 5024, the second horizontal plate 5023 is arranged in the receiving groove 5025, the first horizontal plate 5021 and the second horizontal plate 5023 are connected through the elastic element 5026, usually the elastic element 5026 is a tension spring, generally a plurality of tension springs are arranged, so as to improve the tightening degree of the first vertical plate 5022 and the second vertical plate 5024 on the image collector 80. Further, a rubber strip is arranged on the side of the first vertical plate 5022 and the second vertical plate 5024 facing the image collector 80, so as to avoid damage of the first clamping plate and the second clamping plate to the image collector 80.

[0086] Figure 7 A schematic view of a spherical holder according to an embodiment of the application;

[0087] In one possible implementation, as shown in Figure 7 The spherical holder 501 includes:

[0088] The base 5011 is fixedly connected with the electric sliding block 90, and the base 5011 is provided with a groove on the end away from the electric sliding block 90, for accommodating the rotating sphere 5013, and part of the rotating sphere 5013 protrudes from the base 5011.

[0089] The connecting seat 5012 is arranged at the end of the rotating sphere 5013 protruding from the groove, and the end of the connecting seat 5012 away from the rotating sphere 5013 is fixedly connected with the clamping assembly 502.

[0090] The spherical holder 501 includes the base 5011, the base 5011 is provided with the groove, the rotating sphere 5013 is arranged in the groove, at least part of the rotating sphere 5013 protrudes from the groove and is connected with the connecting seat 5012, the end of the connecting seat 5012 away from the rotating sphere 5013 is connected with the clamping assembly 502, through the arrangement of the rotating sphere 5013, the image collector 80 can rotate itself when being at a certain fixed position of the track 201, so as to expand the collection angle of the image collector 80 and improve the accuracy of tunnel image collection, which is helpful to improve the accuracy of subsequent tunnel modeling.

[0091] It should be noted that a plurality of avoiding grooves are arranged at the circumferential position of the groove on the base 5011, which has an avoiding effect on the connecting seat 5012 when the connecting seat 5012 rotates with the rotating sphere 5013, so as to expand the rotating angle range of the connecting seat 5012 driving the image collector 80.

[0092] Furthermore, at one end of the rotating sphere 5013, distal from the connecting seat 5012, an insert fixing bolt (not shown) is provided on the outer wall of the base 5011. This bolt secures the rotating sphere 5013, preventing the image collector 80 from rotating after the angle is adjusted, which could affect the accuracy of tunnel image acquisition. To adjust the angle of the image collector 80, the insert fixing bolt is loosened. Once the rotation angle of the image collector 80 is adjusted, the insert fixing bolt is tightened to secure the rotating sphere 5013, ensuring the fixed rotation angle of the image collector 80. The rotating sphere 5013 can also be communicatively connected to a control module, which controls the rotation of the rotating sphere 5013 and, in turn, drives the rotation of the image collector 80. This communication control is similar to the control of the electric slider 90 and is a mature technology, so it will not be described in detail here.

[0093] It should be noted that the image collector 80 on the support frame 20 can be adjusted according to different conditions in the tunnel. On the one hand, the position of the image collector 80 on the track 201 is adjusted by the electric slider 90, and on the other hand, the angle between the image collector 80 itself and the support frame 20 (track 201) is adjusted by the spherical pan / tilt 501 (mainly Figure 5 By cooperating with the two, the angle at which the image collector 80 collects images in the tunnel can be adjusted at any time, so that the portable collection device can achieve different tunnel overlap rates under different requirements.

[0094] The connection between the base 5011 of the spherical head 501 and the electric slider 90 can be vertically set (angled) or concentrically set, which can be selected according to the range of adjustment required.

[0095] In a feasible embodiment, the portable collection device further includes:

[0096] The support seat 60 is arranged below the backpack body 10. The support seat 60 includes a vertical portion 601 and a horizontal portion 602 arranged perpendicular to the vertical portion 601. The vertical portion 601 is located directly below the backpack body 10. One side of the vertical portion 601 is aligned with the first side of the backpack body 10, and the other side of the vertical portion 601 protrudes from the second side of the backpack body 10. The horizontal portion 602 extends toward the second side, and the support frame 20 is fixedly connected to the portion of the vertical portion 601 protruding from the second side.

[0097] The support base 60 is typically made of metal and facilitates supporting the backpack body 10 on the ground within a tunnel. The support base 60 allows the support frame 20 to be detachably secured thereto, ensuring that the axis of the support frame 20 is substantially perpendicular to the backpack body 10, thereby ensuring the stability of the support frame 20. The provision of the support base 60 not only facilitates the subsequent installation and removal of the portable acquisition device but also facilitates the installation and fixation of the support frame 20, improving its stability and, consequently, the clarity and accuracy of images captured by the image acquisition device 80.

[0098] Figure 8 FIG. 1 is a schematic diagram of a lighting module according to an embodiment of the present invention.

[0099] In one possible implementation, Figure 8 As shown, the portable collection device also includes:

[0100] The lighting module 70 is connected to one end of the horizontal portion 602 away from the vertical portion 601 , and the light-emitting portion of the lighting module 70 faces the multiple image collectors 80 .

[0101] Among them, the lighting module 70 is arranged at one end of the horizontal part 602 away from the vertical part 601, so that the light-emitting part of the lighting module 70 can be basically upward, toward the multiple image collectors 80. Turning on the lighting module 70 in the tunnel helps the image collector 80 to collect images with clarity, thereby improving the accuracy of subsequent tunnel modeling.

[0102] It should be noted that the lighting module 70 is an LED lamp, the turning on and off of the LED lamp can be controlled separately, and it can be an ordinary battery-powered LED lamp. This is existing technology and will not be described in detail here.

[0103] Furthermore, the components of the portable collection device of the present application are all detachably connected, which makes assembly and disassembly easy and convenient, thereby improving portability; due to the detachable connection, each component can be replaced individually if damaged, which can save the cost of replacing components.

[0104] It should be noted that, when using the portable acquisition device of the tunnel model of the present application, before entering the tunnel, the various components are disassembled from the backpack body 10 and loaded into the backpack body 10. After the staff enters the tunnel, the various components are assembled on the backpack body 10 to form a usable portable acquisition device. Then, according to the actual shape of the tunnel and the needs of the three-dimensional reconstruction software, the position of the image collector 80 on the track 201 and the direction of its own camera are adjusted to collect images in the tunnel. After all the images are input into the three-dimensional reconstruction software, the three-dimensional reconstruction software performs three-dimensional modeling of the tunnel. After simulating the tunnel modeling, other software simulates the tunnel working conditions and stress conditions, and then obtains the damage of the tunnel, which helps to avoid disasters in advance.

[0105] In the present invention, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance. The term "plurality" refers to two or more than two, unless otherwise clearly defined.

[0106] Other embodiments of the present invention will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. The present invention is intended to cover any variations, uses, or adaptations of the present invention that follow the general principles of the invention and include common knowledge or customary techniques in the art not disclosed herein. The description and examples are to be considered as illustrative only.

[0107] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A portable acquisition device for tunnel models, used for acquiring images inside tunnels, characterized in that: The portable collection device comprises: A backpack body, wherein a first side of the backpack body is in contact with a human body; A support frame is provided on a second side of the backpack body facing away from the human body, and a plurality of image collectors are provided on the support frame, wherein the cameras of the image collectors face toward the tunnel wall; a synchronization control module detachably connected to the backpack body, the synchronization control module being disposed on the same side as the support frame, the input end of the synchronization control module being electrically connected to the control module, and the multiple output ends of the synchronization control module being electrically connected to the multiple image collectors respectively; A terminal module, configured to receive image information from a plurality of image collectors; The support frame is annular, and the axis of the support frame is perpendicular to the backpack body; The support frame is provided with a track, the track is located on a side of the support frame away from the backpack body, or the track is located on the outer periphery of the support frame, the image collector is connected to the track via an electric slider, and the electric slider is in communication with the control module; The image collector is fixedly connected to the electric slider via a bracket, the bracket comprising a spherical head and a clamping assembly connected to each other, the spherical head being fixedly connected to the electric slider at one end away from the clamping assembly, and the clamping assembly being used to clamp the image collector; The clamping assembly comprises: The first clamping plate includes a first transverse plate and a first vertical plate arranged perpendicular to the first transverse plate, wherein an end of the first transverse plate facing away from the first vertical plate is provided with a receiving groove; a second clamping plate, comprising a second transverse plate and a second vertical plate arranged perpendicular to the second transverse plate, the second transverse plate being arranged in the receiving groove, one end of the second transverse plate being away from the second vertical plate being fixedly connected to the bottom of the receiving groove via an elastic member, and the image collector being arranged between the first vertical plate and the second vertical plate; The spherical head comprises: a base, the base being fixedly connected to the electric slider, the base having a groove on one end facing away from the electric slider for accommodating a rotating sphere, with a portion of the rotating sphere protruding from the base; A connecting seat is provided at one end of the rotating sphere protruding from the groove, and one end of the connecting seat away from the rotating sphere is fixedly connected to the clamping assembly.

2. The portable acquisition device for tunnel models according to claim 1, characterized in that: The portable collection device also includes: A power-off control module, wherein a plurality of the power-off control modules are arranged at the output end of the synchronization control module, and are used to connect or disconnect the electrical connection between the output end and the image collector.

3. The portable tunnel model acquisition device according to claim 2, characterized in that: The output end of the synchronous control module is provided with a receiving iron sheet, and the receiving iron sheet is provided with a through hole. The power-off control module includes: A housing is provided on one side of the output end of the synchronous control module, the housing corresponds to the output end, a connecting hole is provided on the housing, a cylindrical knob is provided in the connecting hole, a portion of the cylindrical knob is located inside the housing, a gear is provided on one end of the cylindrical knob located inside the housing, and the cylindrical knob is provided perpendicular to the synchronous control module; A connecting iron sheet is provided with connecting teeth at one end, the connecting teeth are engaged with the gear, one end of the connecting iron sheet away from the connecting teeth matches the through hole, and the connecting iron sheet is arranged perpendicular to the receiving iron sheet.

4. The portable tunnel model acquisition device according to claim 1, characterized in that: The portable collection device also includes: A support seat is arranged below the backpack body, and the support seat includes a vertical portion and a horizontal portion arranged perpendicular to the vertical portion. The vertical portion is located directly below the backpack body, one side of the vertical portion is aligned with the first side of the backpack body, and the other side of the vertical portion protrudes from the second side of the backpack body. The horizontal portion extends toward the second side, and the support frame is fixedly connected to the portion of the vertical portion protruding from the second side.

5. The portable acquisition device for tunnel models according to claim 4, characterized in that: The portable collection device also includes: An illumination module is connected to one end of the horizontal portion away from the vertical portion, and a light-emitting portion of the illumination module faces the plurality of image collectors.

Images