Subway tunnel crack monitoring device

Abstract

The utility model discloses a subway tunnel crack monitoring device, which relates to the field of monitoring devices and comprises a casing, a laser indicator used for providing reference marks, a high-speed optical anti-shake camera module and array type LED (light-emitting diode) lamps used for supplementing light. A supporting structure for the high-speed optical anti-shake camera module, the laser indicator and the array type LED lamps is arranged in the machine shell, and open holes are formed in the positions, corresponding to the laser indicator and the high-speed optical anti-shake camera module, of the top of the machine shell. The protective shell prevents stones from impacting the laser indicator, the high-speed optical anti-shake camera module and the array type LED lamp, prevents damage, prevents dust from entering, improves stability, ensures that the protective shell is clean and tidy, prevents a detection structure from being influenced, improves detection accuracy, omits manual cleaning, saves time and labor, omits arrangement of reference objects in a subway tunnel, and is low in cost and convenient to use. And high identification accuracy is ensured, and the crack detection device is arranged on the subway train to replace manual inspection.

Description

TECHNICAL FIELD

[0001] The utility model relates to monitoring device field, especially in a subway tunnel crack monitoring device. BACKGROUND

[0002] In the subway tunnel construction and operation period, due to segment assembly load and subway train load, cracks will be generated on the segment surface, and the existence of cracks will reduce the carrying capacity of the tunnel lining structure, and further affect the safety of the tunnel, so it is necessary to monitor the cracks of the tunnel lining structure. The monitoring index of the surface crack of the tunnel lining is the length and width of the crack. Since the subway train cannot patrol and monitor the tunnel lining structure during operation, the available time for patrolling and monitoring the cracks after the train is out of operation is short, and the efficiency and accuracy of manual patrol are low.

[0003] Chinese patent CN111562348B discloses a tunnel top crack detection device, which comprises a vehicle frame, a first support device, a second support device and a detection device arranged on the vehicle frame. The first support device and the second support device have the same structure and are arranged along the moving direction of the vehicle frame. The first support device comprises an outer cylinder, an inner support rod, an elastic support device, a support frame and an arc plate. The elastic support device is arranged between the outer cylinder and the inner support rod to elastically support the inner support rod. The detection height of the detection device can be adjusted according to the fluctuation of the tunnel to avoid the influence of the height change between the track and the tunnel top on the detection result, and the detection accuracy is higher.

[0004] Chinese patent application CN115681700A discloses a tunnel top crack detection device, which comprises a vehicle frame. An installation assembly for installing tracks of different widths is arranged inside the vehicle frame. A first electric push rod is arranged at the center of the top of the vehicle frame. A support rod is arranged in the output end of the first electric push rod through a spring. A support frame is arranged at the top of the support rod. A stabilizing mechanism is arranged on the first electric push rod to stabilize the whole device. A contact mechanism is arranged on the support frame to position the top of the tunnel. A detection mechanism is arranged on one side of the support frame to detect the cracks of the tunnel. The contact mechanism is positioned with the two ends and the center of the arc of the tunnel by using the principle of three-point arc, which enhances the stability and determines the size of the tunnel arc. The camera swings around the center of the tunnel, making the movement of the camera more stable.

[0005] The current tunnel lining crack monitoring device can collect the lining surface crack image and locate the crack area. Subsequently, the crack features are extracted by manual or image recognition technology. In this process, the crack geometric feature extraction is realized by image processing technology, and the crack features are counted in pixel units.

[0006] The above patent and prior art also have the following defects:

[0007] It is necessary for a person to use a collection device to patrol the tunnel, which is more troublesome. Some use automatic cars or track cars to patrol, and after collecting images, it is necessary to convert the pixel unit features into actual sizes, which requires laying fixed length reference objects at the shooting part or converting through camera parameters. The latter is less applicable in the case of low image frame occupied by cracks and high measurement accuracy requirements. The former has a high cost of laying reference objects in the subway tunnel. After a long time of using the existing monitoring device, dust accumulates on the surface, causing the monitoring device to be inaccurate, reducing the accuracy of collection, and it is more troublesome and time-consuming to clean the dust.

[0008] Therefore, the present application provides a subway tunnel crack monitoring device to meet the needs. Practical new type

[0009] The purpose of the present application is to provide a subway tunnel crack monitoring device. The protective shell prevents the laser pointer, the high-speed optical anti-shake camera module and the array LED lamp from being damaged and prevents dust from entering, thereby improving stability. The cleaning gear drives the cleaning rod to move periodically in the reverse direction, the cleaning rod cleans the dust on the protective shell, ensures the cleanliness of the protective shell, prevents the detection structure from being affected, improves detection accuracy, saves manual cleaning, saves time and effort, eliminates the need to lay reference objects in the subway tunnel, has a low cost, ensures high identification accuracy, and enables the crack detection device to be laid on the subway train to replace manual inspection.

[0010] To achieve the above purpose, the present application provides the following technical scheme: a subway tunnel crack monitoring device, comprising a shell, a laser pointer for providing reference marks, a high-speed optical anti-shake camera module and an array LED lamp for supplementing light, the shell is provided with a support structure for the high-speed optical anti-shake camera module, the laser pointer and the array LED lamp, the top of the shell is provided with an opening corresponding to the laser pointer and the high-speed optical anti-shake camera module, and the bottom of the shell is provided with a standard size SD card socket for inserting an external storage device and a control system access port;

[0011] The protective assembly and the adjusting assembly are arranged on the shell, the protective assembly comprises a protective shell, a cleaning rod, a cleaning gear and two cleaning gear rings, the protective shell is fixedly installed on the shell, the cleaning rod is arranged on the surface of the protective shell, the cleaning gear is fixedly installed on the cleaning rod, and the two cleaning gear rings are located on the two sides of the cleaning gear and are engaged with the cleaning gear, the teeth on the cleaning gear rings are provided with notches at equal intervals, and the teeth of the two cleaning gear rings are staggered.

[0012] The protection assembly further comprises a driving unit, the driving unit comprises a rotating vane, when the rotating vane rotates, the two cleaning gear rings can be driven to rotate.

[0013] Preferably, an adjusting assembly is arranged on the shell, the adjusting assembly comprises a support frame, a rotating shaft, an adjusting belt piece and an adjusting rod, the rotating shaft is rotatably connected to the support frame, the adjusting belt piece comprises an adjusting driving pulley, an adjusting driven pulley and an adjusting belt, the adjusting driving pulley is fixedly installed on the adjusting rod, the adjusting driven pulley is fixedly installed on the rotating shaft, and the adjusting belt is connected between the adjusting driving pulley and the adjusting driven pulley.

[0014] Preferably, the driving unit further comprises a rotating disc, a rotating sleeve, a driving belt piece, a driving shaft, a driving gear and a driving gear ring, the rotating vane can drive the rotating disc to rotate, the rotating sleeve is fixedly installed on the rotating disc, the rotating sleeve can drive the driving shaft to rotate through the driving belt piece, the driving gear is fixedly installed on the driving shaft, the two cleaning gear rings are fixedly installed on the driving gear ring, the driving gear is engaged with the driving gear ring, the driving belt piece comprises a driving driving pulley, a driving driven pulley and a driving belt, the driving driving pulley is fixedly installed on the rotating sleeve, the driving driven pulley is fixedly installed on the driving shaft, and the driving belt is connected between the driving driving pulley and the driving driven pulley, the diameter of the driving driving pulley is greater than that of the driving driven pulley.

[0015] Preferably, the protection assembly further comprises a retaining ring, the rotating shaft is rotatably connected to the protection shell, the cleaning gear and the cleaning rod are both fixedly installed on the rotating shaft, the retaining ring is fixedly installed on the two cleaning gear rings, the rotating shaft is rotatably connected to the retaining ring, the protection shell is arranged in a semicircular shape, the cleaning rod is matched with the protection shell, a plurality of brushes are fixedly installed on the side of the cleaning rod close to the protection shell, and the protection shell is transparent.

[0016] Preferably, a bottom plate is fixedly installed on the protection shell, the support frame is fixedly installed on the bottom plate, a support rod is fixedly installed on the bottom plate, an installation plate is fixedly installed on the support rod, an installation hole is formed in the installation plate, the driving gear ring is rotatably connected to the rotating vane, a support block is fixedly installed on the bottom plate, the driving shaft is rotatably connected to the support block, the rotating sleeve is rotatably connected to the support rod, a guide cone disc is fixedly installed on the bottom plate, the adjusting rod is rotatably connected to the guide cone disc, the guide cone disc is provided with avoiding holes corresponding to the driving belt piece and the adjusting belt piece, a plurality of connecting blocks are fixedly installed on the rotating vane, and the connecting blocks are fixedly installed with the rotating disc.

[0017] Preferably, the laser pointer is provided with a laser emitting part and an optical part, the laser emitting part comprises a positive power interface and a negative power interface, and further comprises a laser diode for emitting a laser beam, the laser pointer is provided with a collimating lens for collimating the divergent laser beam emitted by the laser diode, and further provided with a pump focusing lens for adjusting light intensity, the laser pointer is further provided with a potassium titanyl phosphate crystal, a beam expander lens and an infrared filter, the infrared filter, the collimating lens, the beam expander lens, the potassium titanyl phosphate crystal, the pump focusing lens and the laser diode are arranged in sequence in a pointer housing, and the positive power interface and the negative power interface are arranged on the pointer housing.

[0018] Preferably, the high-speed optical anti-shake camera module is provided with a gyroscope sensor, a driving coil, a position sensor, an electromagnetic coil, a front lens, a VC microcomputer and an optical compensation lens, and the front lens, the optical compensation lens, the electromagnetic coil, the position sensor, the driving coil, the gyroscope sensor and the VC microcomputer are arranged in sequence in a camera housing.

[0019] In conclusion, the technical effects and advantages of the utility model are as follows:

[0020] 1、The protective shell prevents the laser pointer, the high-speed optical anti-shake camera module and the array type LED lamp from being impacted by stones, prevents damage, prevents dust from entering, improves stability, periodically reversely moves the cleaning rod driven by the cleaning gear, the cleaning rod cleans the dust on the protective shell, ensures that the protective shell is clean, prevents the detection structure from being affected, improves detection accuracy, and saves manual cleaning, time and effort;

[0021] 2、The laser pointer is used to replace the fixed-size reference object mark at the position of the crack, the reference scale with a fixed distance is provided in the collected crack image, a scale reference is provided for extracting the crack length and width in image post-processing, the high-speed optical anti-shake camera module enables the crack image to be captured under the motion condition, the reference object is not needed to be laid in the subway tunnel, the cost is low, the identification accuracy is ensured to be high, the crack detection device is laid on the subway train to replace manual inspection;

[0022] 3、The pointing positions of the laser pointer, the high-speed optical anti-shake camera module and the array type LED lamp for supplementing light can be adjusted, so that the pointing positions are aligned with the tunnel side wall, the detection accuracy is improved, the requirement for the installation position is reduced, and the operation difficulty of the adjustment angle is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or prior art description will be briefly introduced. Obviously, the drawings in the following description only constitute some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative effort on the basis of these drawings.

[0024] Figure 1 It is a schematic view of the three-dimensional structure of the present application.

[0025] Figure 2 It is a schematic view of the structure of the driving unit, connecting block and mounting plate in the present application.

[0026] Figure 3 It is a schematic view of the structure of the protective shell, cleaning gear ring and retaining ring in the present application.

[0027] Figure 4 It is a schematic view of the structure of the present application Figure 3 It is an enlarged view of part A in the present application.

[0028] Figure 5 It is an enlarged view of part B in the present application Figure 3 It is an enlarged view of part B in the present application.

[0029] Figure 6 It is a schematic view of the structure of the adjusting belt member and adjusting rod in the present application.

[0030] Figure 7 It is a schematic view of the structure of the supporting frame, machine shell and protective shell in the present application.

[0031] Figure 8 It is a schematic view of the structure of the laser pointer, high-speed optical anti-shake camera module and machine shell in the present application.

[0032] Figure 9 It is a schematic view of the structure of the laser diode, pump focusing lens, potassium titanium phosphate crystal and beam expander lens in the present application.

[0033] Figure 10 It is a schematic view of the structure of the gyroscope sensor, driving coil and position sensor in the present application.

[0034] In the figure: 1, laser pointer; 1-1, laser diode; 1-2, positive power supply interface; 1-3, negative power supply interface; 1-4, pump focusing lens; 1-5, potassium titanyl phosphate crystal; 1-6, beam expander lens; 1-7, collimating lens; 1-8, infrared filter; 2, high-speed optical image stabilization camera module; 2-1, gyroscope sensor; 2-2, drive coil; 2-3, position sensor; 2-4, electromagnetic coil; 2-5, front lens; 2-6, VC microcomputer; 2-7, optical compensation lens; 3, housing; 4, array LED fill light; 5, SD card socket; 6, control system access port; 7, protection assembly; 7-1, protective shell; 7-2, cleaning rod; 7-3, cleaning gear; 7-4, cleaning gear ring; 7-5, retaining ring; 8, adjustment assembly; 8-1, support frame; 8-2, adjustment belt piece; 8-3, adjustment rod; 9, drive unit; 9-1, rotating blade; 9-2, rotating disc; 9-3, rotating sleeve; 9-4, drive belt piece; 9-5, drive gear; 9-6, drive gear ring; 10, bottom plate; 11, support rod; 12, guide cone disc; 13, connecting block; 14, mounting plate. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0036] Embodiment 1: Referring to Figures 1-10 A subway tunnel crack monitoring device is shown, which comprises a housing 3, a laser pointer 1 for providing a reference mark, a high-speed optical image stabilization camera module 2, and an array LED light 4 for supplementing light. The housing 3 is provided with a support structure for the high-speed optical image stabilization camera module 2, the laser pointer 1 and the array LED light 4. The housing 3 is provided with an opening at the top corresponding to the laser pointer 1 and the high-speed optical image stabilization camera module 2. The housing 3 is provided with a standard size SD card socket 5 and a control system access port 6 at the bottom for inserting an external storage device.

[0037] The shell 3 is provided with a protection assembly 7 and an adjusting assembly 8, the protection assembly 7 comprises a protection shell 7-1, a cleaning rod 7-2, a cleaning gear 7-3 and two cleaning gear rings 7-4, the protection shell 7-1 is fixedly installed on the shell 3, the cleaning rod 7-2 is arranged on the surface of the protection shell 7-1, the cleaning gear 7-3 is fixedly installed on the cleaning rod 7-2, and the two cleaning gear rings 7-4 are located on the two sides of the cleaning gear 7-3 and are in meshing connection with the cleaning gear 7-3, the teeth on the cleaning gear ring 7-4 are provided with notches at equal intervals, and the teeth of the two cleaning gear rings 7-4 are staggered.

[0038] The protection assembly 7 further comprises a driving unit 9, the driving unit 9 comprises a rotating blade 9-1, when the rotating blade 9-1 rotates, the two cleaning gear rings 7-4 can be driven to rotate.

[0039] The device is fixed on the subway train, so that the device is on the windward side, the protection shell 7-1 prevents the laser pointer 1, the high-speed optical anti-shake camera module 2 and the array type LED lamp 4 from being hit by stones and being damaged, prevents dust from entering, improves stability, and in the process of subway train operation, the airflow blows the rotating blade 9-1, the rotating blade 9-1 rotates to drive the cleaning gear ring 7-4 to rotate, the two cleaning gear rings 7-4 rotate alternately to drive the cleaning gear 7-3 to rotate, the cleaning gear 7-3 rotates alternately in the opposite direction, the cleaning gear 7-3 drives the cleaning rod 7-2 to move periodically in the opposite direction, the cleaning rod 7-2 cleans the dust on the protection shell 7-1, ensures that the protection shell 7-1 is clean, prevents the detection structure from being affected, and improves the detection accuracy.

[0040] First, the subway train control system feedback parameters are connected to the built-in processor through the control system interface 6. The processor controls the shutter speed of the high-speed optical anti-shake camera module 2 according to the train operation speed to take photos, controls the same train forward distance when taking each photo, and stores the time of taking photos, train speed, and location information in the SD storage card inserted into the SD card slot 5. The laser pointer 1 emits two parallel light beams, forming two bright spots with constant distance in the shooting plane for size reference of the photographed image. The array type LED lamp 4 provides light to the tunnel lining surface to compensate for the insufficient light in the tunnel and the impact on the photographed image. The collected crack image with laser markers is segmented, that is, the crack main area and laser markers are separated from the image background by setting a gray threshold value. The processed image first extracts the pixel length of the laser marker center distance marked by the parallel laser beam, and then calculates the scale of the pixel length and the actual distance of the laser marker. The geometric features of the crack image, including length, width, and area, are extracted to obtain the pixel characteristics of the features. Finally, the actual size of the crack geometric features is obtained by scaling through the scale. The laser pointer 1 is used to replace the fixed size reference object at the position of the crack. The collected crack image has a fixed distance reference scale, which provides a scale reference for extracting the length and width of the crack in the image post-processing. The high-speed optical anti-shake camera module 2 can capture crack images under motion conditions, eliminating the need for setting reference objects in the subway tunnel, reducing costs, and ensuring high identification accuracy. The crack detection device is placed on the subway train to replace manual inspection.

[0041] Embodiment 2, refer to Figures 1-10 As shown in the figure, different from the above embodiment, the casing 3 is provided with an adjusting assembly 8. The adjusting assembly 8 includes a support frame 8-1, a rotating shaft, an adjusting belt piece 8-2, and an adjusting rod 8-3. The rotating shaft is rotatably connected to the support frame 8-1. The adjusting belt piece 8-2 includes an adjusting driving pulley, an adjusting driven pulley, and an adjusting belt. The adjusting driving pulley is fixedly installed on the adjusting rod 8-3. The adjusting driven pulley is fixedly installed on the rotating shaft. The adjusting belt is connected between the adjusting driving pulley and the adjusting driven pulley.

[0042] When the orientation angle of the laser pointer 1, the high-speed optical anti-shake camera module 2 and the array LED lamp 4 for supplementing light needs to be adjusted, the adjusting lever 8-3 is rotated, the adjusting lever 8-3 drives the adjusting driving pulley to rotate, the adjusting driving pulley drives the adjusting belt to rotate, the adjusting belt drives the adjusting driven pulley to rotate, the adjusting driven pulley drives the rotating shaft to rotate, the rotating shaft drives the shell to rotate, the shell drives the laser pointer 1, the high-speed optical anti-shake camera module 2 and the array LED lamp 4 for supplementing light to rotate, so that the pointing position of the laser pointer 1, the high-speed optical anti-shake camera module 2 and the array LED lamp 4 for supplementing light is adjusted, and the laser pointer 1, the high-speed optical anti-shake camera module 2 and the array LED lamp 4 for supplementing light are aligned with the side wall of the tunnel, the detection accuracy is improved, the requirement for the installation position is reduced, and the operation difficulty of the adjusting angle is reduced.

[0043] Embodiment 3, refer to Figures 1-10 As shown in the figure, different from the above-mentioned embodiments, the driving unit 9 further comprises a rotating disc 9-2, a rotating sleeve 9-3, a driving belt piece 9-4, a driving shaft, a driving gear 9-5 and a driving gear ring 9-6, the rotating blade 9-1 can drive the rotating disc 9-2 to rotate, the rotating sleeve 9-3 is fixedly installed on the rotating disc 9-2, the rotating sleeve 9-3 can drive the driving shaft to rotate through the driving belt piece 9-4, the driving gear 9-5 is fixedly installed on the driving shaft, the two cleaning gear rings 7-4 are fixedly installed on the driving gear ring 9-6, the driving gear 9-5 is engaged with the driving gear ring 9-6, the driving belt piece 9-4 comprises a driving driving pulley, a driving driven pulley and a driving belt, the driving driving pulley is fixedly installed on the rotating sleeve 9-3, the driving driven pulley is fixedly installed on the driving shaft, and the driving belt is connected between the driving driving pulley and the driving driven pulley. The diameter of the driving driving pulley is greater than that of the driving driven pulley.

[0044] When the rotating blade 9-1 rotates, the rotating disc 9-2 is driven to rotate, the rotating disc 9-2 drives the rotating sleeve 9-3 to rotate, the rotating sleeve 9-3 drives the driving driving pulley to rotate, the driving driving pulley drives the driving belt to rotate, the driving belt drives the driving driven pulley to rotate, the driving driven pulley drives the driving shaft to rotate, the driving shaft drives the driving gear 9-5 to rotate, the driving gear 9-5 drives the driving gear ring 9-6 to rotate, the driving gear ring 9-6 drives the driving gear ring 9-6 to rotate, the driving gear 9-5 drives the cleaning gear ring 7-4 to rotate, the cleaning gear ring 7-4 drives the two cleaning gear rings 7-4 to rotate alternately, drives the cleaning gear 7-3 to rotate, the cleaning gear 7-3 rotates alternately in the opposite direction, and the cleaning gear 7-3 drives the cleaning rod 7-2 to move periodically in the opposite direction.

[0045] Embodiment 4, refer to Figures 1-10As shown, unlike the above-mentioned embodiments, the protection assembly 7 further comprises a baffle 7-5, a rotating shaft is rotatably connected to the protection shell 7-1, the cleaning gear 7-3 and the cleaning rod 7-2 are both fixedly installed on the rotating shaft, the baffle 7-5 is fixedly installed on the two cleaning gear rings 7-4, the rotating shaft is rotatably connected to the baffle 7-5, the protection shell 7-1 is provided in a semicircular shape, the cleaning rod 7-2 cooperates with the protection shell 7-1, a plurality of brushes are fixedly installed on the side of the cleaning rod 7-2 close to the protection shell 7-1, and the protection shell 7-1 is provided in a transparent manner.

[0046] The baffle 7-5 prevents the dust cleaned down from accumulating on the cleaning gear ring 7-4.

[0047] Embodiment 5, refer to Figures 1-10 As shown, unlike the above-mentioned embodiments, the protection shell 7-1 is fixedly installed with a bottom plate 10, the support frame 8-1 is fixedly installed on the bottom plate 10, the bottom plate 10 is fixedly installed with a support rod 11, the support rod 11 is fixedly installed with a mounting plate 14, the mounting plate 14 is provided with mounting holes, the driving gear ring 9-6 is rotatably connected to the rotating blade 9-1, the bottom plate 10 is fixedly installed with a support block, the driving shaft is rotatably connected to the support block, the rotating sleeve 9-3 is rotatably connected to the support rod 11, the bottom plate 10 is fixedly installed with a guide cone disc 12, the adjusting rod 8-3 is rotatably connected to the guide cone disc 12, the guide cone disc 12 is provided with avoiding holes corresponding to the driving belt piece 9-4 and the adjusting belt piece, the rotating blade 9-1 is fixedly installed with a plurality of connecting blocks 13, and the connecting blocks 13 are fixedly installed with the rotating disc 9-2.

[0048] The support block supports the driving shaft and the driving gear 9-5, the guide cone disc 12 supports the adjusting rod 8-3, and meanwhile, the guide cone disc 12 guides the airflow of the rotating blade 9-1 and the dust cleaned down by the cleaning rod 7-2 to be discharged.

[0049] Embodiment 6, refer to Figures 1-10 As shown, unlike the above-mentioned embodiments, the laser pointer 1 is provided with a laser emitting part and an optical part, the laser emitting part comprises a positive power interface 1-2 and a negative power interface 1-3, the laser emitting part further comprises a laser diode 1-1 for emitting a laser beam, the laser pointer 1 is provided with a collimating lens 1-7 for collimating the divergent laser beam emitted by the laser diode, the laser pointer 1 is provided with a pump focusing lens 1-4 for adjusting light intensity, the laser pointer 1 is further provided with a potassium titanyl phosphate crystal 1-5, a beam expander 1-6 and an infrared filter 1-8, the infrared filter 1-8, the collimating lens 1-7, the beam expander 1-6, the potassium titanyl phosphate crystal 1-5, the pump focusing lens 1-4 and the laser diode 1-1 are arranged in the pointer housing in sequence, and the positive power interface 1-2 and the negative power interface 1-3 are arranged on the pointer housing.

[0050] The laser diode 1-1 generates a laser beam of a specific wavelength and high intensity by inputting current from a power source, the pump focusing lens 1-4 converges the pump light to increase the energy density of the light and adjust the spot size, the convergent light is converted by the potassium titanyl phosphate crystal 1-5 to convert infrared light into visible light, the beam expander 1-6 adjusts the light intensity density, the collimating lens 1-7 corrects the light beam into parallel light, and finally the infrared filter 1-8 emits laser light for indication.

[0051] Embodiment 7, refer to Figures 1-10 As shown in the figure, different from the above embodiments, the high-speed optical anti-shake camera module 2 is provided with a gyroscope sensor 2-1, a drive coil 2-2, a position sensor 2-3, an electromagnetic coil 2-4, a front lens 2-5, a VC microcomputer 2-6, and an optical compensation lens 2-7, which are arranged in the camera housing in sequence.

[0052] The gyroscope sensor 2-1 senses the train shaking and transmits a signal to the VC microcomputer 2-6 for processing, the processed signal for optical lens correction is transmitted to the drive coil 2-2 and the position sensor 2-3, the drive coil 2-2 generates an electromagnetic field according to the signal to act on the electromagnetic coil 2-4, further causing the optical compensation lens 2-7 to displace and generate a compensation displacement in the opposite direction of the train vibration, so that the light converging by the lens remains relatively stationary and filters the vibration caused by the train running, making the photographed image clearer.

[0053] Finally, it should be noted that the above only describes the preferred embodiments of the present application and is not intended to limit the present application, although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent replacement for some technical features, any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A subway tunnel crack monitoring device, comprising a housing, a laser pointer for providing a reference mark, a high-speed optical anti-shake camera module and an array LED light for supplementing light, characterized in that: The shell is internally provided with a support structure for a high-speed optical anti-shake camera module, a laser pointer and an array LED lamp, the top of the shell is provided with an opening corresponding to the laser pointer and the high-speed optical anti-shake camera module, and the bottom of the shell is provided with an SD card socket for inserting an external storage device and a control system access port. The shell is provided with a protection assembly and an adjustment assembly, the protection assembly comprises a protection shell, a cleaning rod, a cleaning gear and two cleaning gear rings, the protection shell is fixedly installed on the shell, the cleaning rod is arranged on the surface of the protection shell, the cleaning gear is fixedly installed on the cleaning rod, and the two cleaning gear rings are located on the two sides of the cleaning gear and are in meshing connection with the cleaning gear, the teeth of the cleaning gear rings are provided with notches at equal intervals, and the teeth of the two cleaning gear rings are staggered. The protection assembly further comprises a driving unit, and the driving unit comprises a rotating blade.

2. The subway tunnel crack monitoring device according to claim 1, characterized in that: The shell is provided with an adjustment assembly, the adjustment assembly comprises a support frame, a rotating shaft, an adjustment belt piece and an adjustment rod, the rotating shaft is rotatably connected to the support frame, the adjustment belt piece comprises an adjustment driving pulley, an adjustment driven pulley and an adjustment belt, the adjustment driving pulley is fixedly installed on the adjustment rod, the adjustment driven pulley is fixedly installed on the rotating shaft, and the adjustment belt is connected between the adjustment driving pulley and the adjustment driven pulley.

3. The subway tunnel crack monitoring device according to claim 2, characterized in that: The driving unit further comprises a rotating disc, a rotating sleeve, a driving belt piece, a driving shaft, a driving gear and a driving gear ring, the rotating blade can drive the rotating disc to rotate, the rotating sleeve is fixedly installed on the rotating disc, the driving belt piece can drive the driving shaft to rotate through the rotating sleeve, the driving gear is fixedly installed on the driving shaft, the two cleaning gear rings are fixedly installed on the driving gear ring, the driving gear is in meshing connection with the driving gear ring, the driving belt piece comprises a driving driving pulley, a driving driven pulley and a driving belt, the driving driving pulley is fixedly installed on the rotating sleeve, the driving driven pulley is fixedly installed on the driving shaft, and the driving belt is connected between the driving driving pulley and the driving driven pulley, and the diameter of the driving driving pulley is greater than that of the driving driven pulley.

4. The subway tunnel crack monitoring device according to claim 3, characterized in that: The protection assembly further comprises a retaining ring, the rotating shaft is rotatably connected to the protection shell, the cleaning gear and the cleaning rod are fixedly installed on the rotating shaft, the retaining ring is fixedly installed on the two cleaning gear rings, the rotating shaft is rotatably connected to the retaining ring, the protection shell is in a semicircular shape, the cleaning rod is matched with the protection shell, a plurality of brushes are fixedly installed on the side of the cleaning rod close to the protection shell, and the protection shell is transparent.

5. The subway tunnel crack monitoring device according to claim 4, characterized in that: The protective shell is fixedly installed with a bottom plate, the support frame is fixedly installed on the bottom plate, the bottom plate is fixedly installed with a support rod, the support rod is fixedly installed with a mounting plate, the mounting plate is provided with a mounting hole, the driving gear ring is rotationally connected to the rotating blade, the bottom plate is fixedly installed with a support block, a driving shaft is rotationally connected to the support block, a rotating sleeve is rotationally connected to the support rod, the bottom plate is fixedly installed with a guide cone disc, the adjusting rod is rotationally connected to the guide cone disc, the guide cone disc is provided with an avoiding hole corresponding to the driving belt piece and the adjusting belt piece, the rotating blade is fixedly installed with a plurality of connecting blocks, and the connecting blocks are fixedly installed with the rotating disc.

6. The subway tunnel crack monitoring device of claim 1, wherein: The laser pointer is provided with a laser emitting part and an optical part, the laser emitting part comprises a positive power supply interface and a negative power supply interface, the laser emitting part further comprises a laser diode for emitting a laser beam, the laser pointer is provided with a collimating lens for collimating the divergent laser beam emitted by the laser diode, the laser pointer is provided with a pump focusing lens for adjusting light intensity, the laser pointer is further provided with a potassium titanyl phosphate crystal, a beam expander lens and an infrared filter, the infrared filter, the collimating lens, the beam expander lens, the potassium titanyl phosphate crystal, the pump focusing lens and the laser diode are arranged in the laser pointer housing in sequence, and the positive power supply interface and the negative power supply interface are arranged on the laser pointer housing.

7. The subway tunnel crack monitoring device of claim 1, wherein: The high-speed optical anti-shake camera module is provided with a gyroscope sensor, a driving coil, a position sensor, an electromagnetic coil, a front lens, a VC microcomputer and an optical compensation lens, and the front lens, the optical compensation lens, the electromagnetic coil, the position sensor, the driving coil, the gyroscope sensor and the VC microcomputer are arranged in the camera housing in sequence.

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