An intelligent tunnel safety monitoring and early warning device based on image recognition

Abstract

The present invention relates to an intelligent monitoring and early warning device for tunnel safety based on image recognition, comprising a first detection component and a second detection component. The second detection component is arranged at the connection between two adjacent segment units, and the first detection component is arranged at the inner ring of the corresponding segment unit and can collect whether cracks appear on the inner wall of the tunnel through a camera. The second detection component is in contact with the inner wall of the tunnel, and the lining structure can transmit the displacement applied to its outer ring wall along its circumference to the end. The displacement is detected by the sensor at the end to determine whether the tunnel lining structure has deformed. After the sensor detects the displacement, it simultaneously drives the first detection components on both sides to start monitoring the inner wall of the tunnel, thereby realizing intelligent monitoring and early warning. The lining can simultaneously monitor the deformation displacement of two adjacent segment units, and its plate body is arranged corresponding to the segments in the segment unit, and can sense and detect displacement damage occurring at the connection between any segment of the segment unit, making the monitoring of lining deformation more accurate.

Description

Technical Field

[0001] The present invention relates to the technical field of tunnel safety monitoring, and in particular to an intelligent tunnel safety monitoring and early warning device based on image recognition. Background Art

[0002] With the development of tunnel engineering construction, shield tunneling has become the mainstream tunnel construction method due to its high degree of mechanization, small construction disturbance, strong adaptability to complex geological conditions, safe and fast construction, etc. It is widely used in urban subways, railway tunnels and cross-river or cross-sea underwater tunnels.

[0003] Tunnels experience structural deformation over years of use. Continuous monitoring of tunnel deformation during operation is crucial for safe operation. In shield tunnels, deformation of the lining structure inevitably leads to segment displacement. High-pressure bending damage to segment joints can cause cracks in the segments and even break bolts connecting them, damaging the joints between adjacent segments. Prompt detection and treatment of structural deformation are crucial to ensure safe tunnel operation.

[0004] The information disclosed in this background technology section is only intended to deepen the understanding of the overall background technology of the present disclosure and should not be regarded as an admission or any form of suggestion that the information constitutes the prior art known to those skilled in the art. Summary of the Invention

[0005] The present invention provides an intelligent tunnel safety monitoring and early warning device based on image recognition, which can effectively solve the problems in the background technology.

[0006] In order to achieve the above object, the technical solution adopted by the present invention is:

[0007] An intelligent tunnel safety monitoring and early warning device based on image recognition includes a first detection component and a second detection component arranged corresponding to a plurality of segment units along the length of the tunnel. The first detection component and the second detection component are both arranged along the circumference of the tunnel. The second detection component is arranged corresponding to the connection between two adjacent segment units. The first detection component is arranged on the inner circle of the segment unit, and the second detection component is connected to the two first detection components on both sides of the first detection component.

[0008] The first detection assembly includes a guide rail, a carrier, and a camera. The guide rail is arranged along the circumference of the segment unit and close to the inner wall thereof. The camera is mounted on the carrier and arranged toward the inner wall of the segment unit. The carrier is slidably connected to the guide rail.

[0009] The second detection assembly includes a lining plate attached to the inner wall of the tube unit. The lining plate is formed by splicing a plurality of plates along the circumference of the tube unit. A sensor is provided at the end of the lining plate to detect the circumferential displacement of the lining plate.

[0010] Furthermore, the plate bodies constituting the lining plates are adapted to the inner walls of the tube segment units being set as arc plates, and the lining plates include top plates, adjacent plates and standard plates. The top plates are set corresponding to the capping blocks in the tube segment units, the adjacent plates are located on both sides of the top plates and respectively correspond to the adjacent blocks in the tube segment units, and there are multiple standard plates corresponding to the standard blocks in the tube segment units.

[0011] Furthermore, a first connection surface is provided at both ends of the top plate, a second connection surface and a third connection surface are provided at both ends of the adjacent plate, and a fourth connection surface is provided at one end of the standard plate connected to the adjacent plate;

[0012] The top plate and the adjacent plate are connected by snapping together through the first connection surface and the second connection surface, and the adjacent plate and the standard plate are connected by snapping together through the third connection surface and the fourth connection surface.

[0013] Furthermore, the first connecting surface and the second connecting surface have the same structure, both comprising a first plane segment and a first arc segment, and the third connecting surface and the fourth connecting surface both comprising a second plane segment and a second arc segment;

[0014] The centers of the first arc surface segment and the second arc surface segment are both set toward the inside and close to the outer circle of the tube segment unit, and extend to the inner wall of the tube segment unit through the first plane segment and the second plane segment respectively.

[0015] Furthermore, the central angle of the top plate and the central angle of the first arc surface segment are complementary to each other, and the central angle of the adjacent plate and the central angle of the second arc surface segment are complementary to each other.

[0016] Furthermore, the connecting ends of the two adjacent standard plates are respectively provided with a first locking surface and a second locking surface, and the first locking surface and the second locking surface have the same structure, including a straight line segment and an arc segment, and the arc segment is close to the outer wall of the standard plate and its center is facing inward, and the central angle of the standard plate is complementary to the central angle of the arc segment.

[0017] Furthermore, a bracket is provided on the inner side of the lining plate, and a first elastic member is provided on the side of the bracket facing the tube unit. The bracket presses the lining plate against the inner wall of the tube unit through the first elastic member.

[0018] Furthermore, both ends of the first detection component and the second detection component are respectively arranged on bases on both sides of the tunnel bottom surface, and the bases are arranged along the length direction of the tunnel;

[0019] A second elastic member is provided at one end of the lining plate where the sensor is provided, and the second elastic member is located between the end of the lining plate and the base.

[0020] The beneficial effects of the present invention are:

[0021] In the present invention, the first detection component is arranged on the inner circle of the corresponding pipe segment unit, and can collect whether there are cracks on the inner wall of the tunnel through a camera. The second detection component is in contact with the inner wall of the tunnel. The lining structure can transmit the displacement applied to its outer ring wall along its circumference to the end. The displacement is detected by the sensor at the end to determine whether the tunnel lining structure is deformed. After the sensor detects the displacement, it simultaneously drives the first detection components on both sides to start monitoring the inner wall of the tunnel, thereby realizing intelligent monitoring and early warning.

[0022] The liner can monitor the deformation and displacement of two adjacent segment units at the same time, and its plate body is set corresponding to the segments in the segment unit, which can sense and detect the displacement damage at the connection of any segment in the segment unit, making the monitoring of liner deformation more accurate. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0024] Figure 1 This is a schematic diagram of the installation of the intelligent monitoring and early warning device in an embodiment of the present invention;

[0025] Figure 2 This is a schematic diagram of the structure of a monitoring and early warning device in an embodiment of the present invention;

[0026] Figure 3 Schematic diagram of the structure of the first detection component and the second detection component in an embodiment of the present invention;

[0027] Figure 4 for Figure 3 A magnified view of the local structure at point A;

[0028] Figure 5 for Figure 3 A magnified view of the local structure at point B in the middle;

[0029] Figure 6 Schematic diagram of the connection between two adjacent standard plates in an embodiment of the present invention;

[0030] Figure 7Schematic diagram of the connection between the top plate and the adjacent plate in an embodiment of the present invention;

[0031] Figure 8 for Figure 7 A magnified view of the local structure at point C in the middle;

[0032] Figure 9 Schematic diagram of the connection between the adjacent plate and the standard plate in an embodiment of the present invention;

[0033] Figure 10 for Figure 9 A magnified view of the local structure at point D in the middle;

[0034] Figure 11 A monitoring diagram of the camera in the first detection component.

[0035] Figure numerals: 1. pipe segment unit; 11. capping block; 12. adjacent block; 13. standard block; 2. first detection component; 21. guide rail; 22. carrier; 23. camera; 3. second detection component; 31. lining plate; 32. sensor; 33. top plate; 331. first connecting surface; 332. first plane segment; 333. first arc segment; 34. adjacent plate; 341. second connecting surface; 342. third connecting surface; 343. second plane segment; 344. second arc segment; 35. standard plate; 351. fourth connecting surface; 352. first engaging surface; 353. second engaging surface; 354. straight line segment; 355. arc segment; 36. bracket; 37. first elastic member; 38. second elastic member; 4. base. DETAILED DESCRIPTION

[0036] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0037] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly attached to the other element or there may be an intermediate element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation methods.

[0038] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this invention pertains. The terms used in this specification of the present invention are for the purpose of describing specific embodiments only and are not intended to limit the present invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0039] like Figures 1 to 11 The image recognition-based intelligent monitoring and early warning device for tunnel safety shown in the figure includes a first detection component 2 and a second detection component 3 arranged corresponding to a number of segment units 1 in the length direction of the tunnel. The first detection component 2 and the second detection component 3 are both arranged along the circumference of the tunnel. The second detection component 3 is arranged corresponding to the connection between two adjacent segment units 1. The first detection component 2 is arranged corresponding to the segment unit 1 on its inner circle, and the second detection component 3 is connected to the two first detection components 2 on both sides thereof; the first detection component 2 includes a guide rail 21, a carrier 22 and a camera 23. The guide rail 21 is arranged along the circumference of the segment unit 1 and close to its inner wall. The camera 23 is installed on the carrier 22 and is arranged toward the inner wall of the segment unit 1. The carrier 22 is slidably connected to the guide rail 21; the second detection component 3 includes a lining plate 31 that is in contact with the inner wall of the segment unit 1. The lining plate 31 is spliced together by a number of plates along the circumference of the segment unit 1. A sensor 32 is arranged at the end of the lining plate 31 to detect the circumferential displacement of the lining plate 31.

[0040] The tunnel safety intelligent monitoring and early warning device disclosed in the present application is set up corresponding to the pipe segment unit 1 in the tunnel, wherein the first detection component 2 is set up in the inner circle of the tunnel and can collect whether there are cracks on the inner wall of the tunnel through the camera 23. The second detection component 3 is set in contact with the inner wall of the tunnel. When the lining structure of the shield tunnel is deformed, the spatial position of the inner wall of its pipe segment unit 1 will displace with the deformation and transmit the displacement to the lining 31. The lining 31 structure can transmit the displacement applied to its outer ring wall along its circumference to the end of the lining 31. The displacement of the lining 31 is detected by the sensor 32 at the end of the lining 31 to determine whether the tunnel lining structure has been deformed.

[0041] During the specific monitoring process of the above-mentioned device, when the lining plate 31 located at the connection between two adjacent segment units 1 is displaced and detected by the sensor 32, the displacement information will be transmitted to the control unit and simultaneously drive the carrier 22 and camera 23 of the first detection components 2 on both sides to take pictures of the inner wall of the secondary lining inside the segment unit 1, perform crack identification and analysis on the collected pictures, and further determine the degree of damage to the structure of the segment unit 1.

[0042] like Figure 11 As shown, the ends of two adjacent segments are fixedly connected by bolts. The destruction process of the segment joint will eventually break the connecting bolts at the ends. During the destruction process, cracks will be generated on the inner wall of the secondary lining inside the segment unit 1. The reciprocating motion of the camera 23 in the first detection component 2 on the guide rail 21 can continuously monitor the generation and development of the cracks and issue an early warning.

[0043] The lining plate 31 is simultaneously fitted with the inner walls of the two adjacent segment units 1, and can simultaneously monitor the deformation displacement of the two adjacent segment units 1. After the sensor 32 detects the displacement, it simultaneously drives the first detection components 2 on both sides to start monitoring the inner wall of the tunnel, realizing intelligent monitoring and early warning, and avoiding the first detection component 2 from continuously monitoring and collecting images and performing unnecessary monitoring and collection.

[0044] In this application, if Figure 3 As shown, the plate bodies constituting the lining plate 31 are all adapted to the inner wall of the tube segment unit 1 being set as an arc plate. The lining plate 31 includes a top plate 33, an adjacent plate 34 and a standard plate 35. The top plate 33 is set corresponding to the capping block 11 in the tube segment unit 1, the adjacent plates 34 are located on both sides of the top plate 33 and are respectively set corresponding to the adjacent blocks 12 in the tube segment unit 1, and multiple standard plates 35 are set corresponding to the standard blocks 13 in the tube segment unit 1.

[0045] The plates in the liner 31 structure are arranged in a one-to-one correspondence with the segments in the segment unit 1, and can sense and detect displacement damage occurring at any segment connection of the segment unit 1, making the monitoring of the deformation of the liner 31 more accurate.

[0046] For further information, see Figures 7 to 10 As shown, a first connecting surface 331 is provided at both ends of the top plate 33, a second connecting surface 341 and a third connecting surface 342 are respectively provided at both ends of the adjacent plate 34, and a fourth connecting surface 351 is provided at one end of the standard plate 35 connected to the adjacent plate 34; the top plate 33 and the adjacent plate 34 are connected by the first connecting surface 331 and the second connecting surface 341, and the adjacent plate 34 and the standard plate 35 are connected by the third connecting surface 342 and the fourth connecting surface 351.

[0047] The structural principle of the connection end between the top plate 33 and the adjacent plate 34 is the same as the structural principle of the connection end between the adjacent plate 34 and the standard plate 35. While facilitating the splicing of the plates in the lining 31, it is also beneficial to transmit the radial displacement borne by the lining 31 along the circumference of the lining 31 itself, and finally transmit the displacement of any plate of the lining 31 to the sensor 32 at the end of the lining 31.

[0048] As a preferred embodiment of the above-mentioned plate end connection structure, the first connecting surface 331 and the second connecting surface 341 have the same structure, both comprising a first planar segment 332 and a first arcuate segment 333. The third connecting surface 342 and the fourth connecting surface 351 both comprise a second planar segment 343 and a second arcuate segment 344. The centers of the first arcuate segment 333 and the second arcuate segment 344 are both located inward and close to the outer circumference of the segment unit 1. They extend through the first planar segment 332 and the second planar segment 343 to the inner wall of the segment unit 1, respectively. The central angle of the top plate 33 is complementary to that of the first arcuate segment 333, and the central angle of the adjacent plate 34 is complementary to that of the second arcuate segment 344.

[0049] See respectively Figure 7 and Figure 9 As shown, in the connection structure between the top plate 33 and the adjacent plate 34, the central angle α of the top plate 33 and the central angle β of the first arc surface segment 333 are complementary, that is, α+β=90°; the central angle δ of the adjacent plate 34 and the central angle θ of the second arc surface segment 344 are complementary, that is, δ+θ=90°.

[0050] See further Figure 8 and Figure 10 As shown, f2 and f4 are the sum of the force displacement directions of the top plate 33 and the adjacent plate 34, respectively; f1 and f3 are the force directions of the ends of the top plate 33 and the adjacent plate 34 acting on the adjacent plates, respectively; F1 and F2 respectively represent the resultant force directions applied by the end of the top plate 33 to the end of the adjacent plate 34, and the resultant force directions applied by the adjacent plate 34 to the end of the standard plate 35, so that the resultant force direction is tangentially parallel to the ends of the several arc plates of the lining plate 31, thereby realizing the transmission of the force deformation displacement of the several plates of the lining plate 31 in the circumferential direction of the lining plate 31.

[0051] In the lining plate 31 structure, the connection end surface structure between the standard plates 35 and the standard plates 35 is the same as the connection structure between the top plate 33 and the adjacent plate 34; specifically, the connection ends of the two adjacent standard plates 35 are respectively provided with a first locking surface 352 and a second locking surface 353, and the first locking surface 352 and the second locking surface 353 have the same structure, including a straight line segment 354 and an arc segment 355, and the arc segment 355 is close to the outer wall of the standard plate 35 and its center is facing inward, and the central angle of the standard plate 35 and the central angle of the arc segment 355 are complementary to each other.

[0052] In the present application, a bracket 36 is provided on the inner side of the liner 31, and a first elastic member 37 is provided on the side of the bracket 36 facing the segment unit 1. The bracket 36 presses the liner 31 against the inner wall of the segment unit 1 through the first elastic member 37. The bracket 36 provides flexible support to the liner 31 through the first elastic member 37, ensuring that the liner 31 is firmly attached to the segment unit 1 without affecting the transmission of the displacement of the liner 31.

[0053] like Figure 3 As shown, the ends of the first detection assembly 2 and the second detection assembly 3 are respectively mounted on bases 4 on either side of the tunnel floor, with the bases 4 extending along the length of the tunnel. A second elastic member 38 is mounted on the end of the lining plate 31 where the sensor 32 is located, and is positioned between the end of the lining plate 31 and the base 4. The second elastic member 38 supports the end of the lining plate 31, facilitating the sensor 32 to detect displacement of the lining plate 31.

[0054] Those skilled in the art will appreciate that the present invention is not limited to the foregoing embodiments. The foregoing embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An intelligent tunnel safety monitoring and early warning device based on image recognition, characterized in that: It includes a first detection assembly and a second detection assembly arranged corresponding to a plurality of segment units in the longitudinal direction of the tunnel. The first detection assembly and the second detection assembly are both arranged along the circumference of the tunnel. The second detection assembly is arranged corresponding to the connection between two adjacent segment units. The first detection assembly is arranged corresponding to the segment unit at its inner circle, and the second detection assembly is connected to the two first detection assemblies on both sides of the first detection assembly. The first detection assembly includes a guide rail, a carrier, and a camera. The guide rail is arranged along the circumference of the segment unit and close to the inner wall thereof. The camera is mounted on the carrier and arranged toward the inner wall of the segment unit. The carrier is slidably connected to the guide rail. The second detection assembly includes a lining plate attached to the inner wall of the tube segment unit, the lining plate is formed by splicing a plurality of plates along the circumference of the tube segment unit, and a sensor is provided at the end of the lining plate to detect the circumferential displacement of the lining plate; The lining plate is simultaneously attached to the inner walls of two adjacent segment units, and when the sensor detects displacement, the two first detection components located on both sides thereof are simultaneously driven to start monitoring the inner wall of the tunnel; The plate bodies constituting the lining plate are all adapted to the inner wall of the tube segment unit being set as an arc plate. The lining plate includes a top plate, an adjacent plate and a standard plate. The top plate is set corresponding to the capping block in the tube segment unit. The adjacent plates are located on both sides of the top plate and respectively correspond to the adjacent blocks in the tube segment unit. A plurality of standard plates are set corresponding to the standard blocks in the tube segment unit. A first connecting surface is provided at both ends of the top plate, a second connecting surface and a third connecting surface are provided at both ends of the adjacent plate, and a fourth connecting surface is provided at one end of the standard plate connected to the adjacent plate; The top plate and the adjacent plate are connected by snapping together through the first connecting surface and the second connecting surface, and the adjacent plate and the standard plate are connected by snapping together through the third connecting surface and the fourth connecting surface; The connecting ends of the two adjacent standard plates are respectively provided with a first locking surface and a second locking surface. The first locking surface and the second locking surface have the same structure, including a straight line segment and an arc segment. The arc segment is close to the outer wall of the standard plate and its center is facing inward. The central angle of the standard plate and the central angle of the arc segment are complementary to each other.

2. The tunnel safety intelligent monitoring and early warning device based on image recognition according to claim 1 is characterized in that: The first connecting surface and the second connecting surface have the same structure, both comprising a first plane segment and a first arcuate segment, and the third connecting surface and the fourth connecting surface both comprise a second plane segment and a second arcuate segment; The centers of the first arc surface segment and the second arc surface segment are both set toward the inside and close to the outer circle of the tube segment unit, and extend to the inner wall of the tube segment unit through the first plane segment and the second plane segment respectively.

3. The tunnel safety intelligent monitoring and early warning device based on image recognition according to claim 2 is characterized in that: The central angle of the top plate and the central angle of the first arc surface segment are complementary to each other, and the central angle of the adjacent plate and the central angle of the second arc surface segment are complementary to each other.

4. The tunnel safety intelligent monitoring and early warning device based on image recognition according to claim 1 is characterized in that: A bracket is provided on the inner side of the lining plate, and a first elastic member is provided on the side of the bracket facing the tube unit. The bracket presses the lining plate tightly against the inner wall of the tube unit through the first elastic member.

5. The tunnel safety intelligent monitoring and early warning device based on image recognition according to claim 1 is characterized in that: The two ends of the first detection component and the second detection component are respectively arranged on bases on both sides of the tunnel bottom surface, and the bases are arranged along the length direction of the tunnel; A second elastic member is provided at one end of the lining plate where the sensor is provided, and the second elastic member is located between the end of the lining plate and the base.

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