A displacement measuring device based on machine vision

Abstract

The present invention relates to the technical field of detection and measurement devices, and proposes a displacement measuring device based on machine vision, comprising a base, a switching component, a cleaning component and a heat dissipation component. The bottom of the base is fixedly connected to four fixed legs evenly distributed in a rectangular array. By setting structures such as the switching component, efficient and stable detection of slope displacement is achieved. The use of two main and backup visual detection cameras ensures that during a long detection process, even if the main camera needs to be cooled due to excessive operating temperature, the backup camera can immediately take over to ensure the continuity and accuracy of the detection. When the temperature is too high, the main camera will automatically shut down and move to the vicinity of the heat dissipation hole for cooling, effectively avoiding damage to the equipment due to long-term high-temperature operation and significantly extending the service life of the camera. The operation of the entire device is managed by an intelligent controller, which can automatically switch between the main and backup cameras according to the internal temperature of the camera, greatly reducing manual intervention and improving work efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of detection and measurement devices, and in particular to a displacement measurement device based on machine vision. Background Art

[0002] At present, under the action of external loads such as the slope's own weight, vibration or earthquake, the slope surface often cracks, settles, displaces and even becomes unstable and damaged. Therefore, it is necessary to monitor the deformation of the slope. The damage of the slope is generally not sudden. There is always a considerable period of deformation development before the damage. By measuring the deformation of the slope, we can not only predict the instability and sliding of the slope, but also use the dynamic change law of deformation to test the correctness of the slope management design.

[0003] The authorization announcement in the prior art is: CN 113067973 B, and the name is: A machine vision camera for slope deformation monitoring, including a base plate, the four corners of the bottom of the base plate are vertically rotatably connected to rollers, and a support mechanism, an adjustment mechanism and a detection mechanism are arranged above the base plate from bottom to top. The detection mechanism includes a fixed frame, and a support seat is horizontally slidably connected above the fixed frame.

[0004] Although the patent uses a protective mechanism to protect the camera, it does not take into account that when inspecting the slope, the equipment usually needs to run continuously for a long time. The closed structure is set and only holes are opened at the bottom. During the long-term operation, the heat continuously generated in the equipment cannot be effectively dissipated, which will affect the service life of the equipment. Furthermore, the device does not have any backup detection equipment to replace the main equipment when problems occur. During the maintenance process, there will be a measurement window period, and the damage to the slope during this time cannot be measured. Therefore, this device has the problem of not being able to operate and monitor for a long time.

[0005] In addition, during heavy rainfall, because there is no supporting structure, rainwater will flow into the interior of the monitoring device through the filter at the bottom, causing damage to the monitoring and measuring device. As a result, detection cannot be carried out during the process where slope damage is most likely to occur, so there is a problem of poor waterproofness. Summary of the Invention

[0006] The present invention proposes a displacement measuring device based on machine vision, which solves the problems in the related art of being unable to perform detection for a long time and having poor waterproofness.

[0007] The technical solutions of the present invention are as follows:

[0008] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a displacement measuring device based on machine vision, comprising a base, a switching assembly, a cleaning assembly, and a heat dissipation assembly, wherein the bottom of the base is fixedly connected to four fixed legs evenly distributed in a rectangular array, the top of the base is fixedly connected to a protective shell, the switching assembly comprises a mounting plate, the mounting plate is fixedly connected to the top of the base, a motor mounting seat is fixedly connected to one side of the mounting plate, a servo motor is mounted on the top of the motor mounting seat, and the output end of the servo motor is fixedly connected to a synchronous shaft via a coupling;

[0009] The top of the base is fixedly connected to two symmetrically arranged limit brackets, a horizontal groove is provided inside the limit bracket, a first slider is slidably connected inside the horizontal groove, a vertical groove is provided inside the limit bracket, and a second slider is slidably connected inside the vertical groove, the top of the base is fixedly connected to two symmetrically arranged support blocks, the top of the support block is fixedly connected to an axle frame, a rotating shaft is rotatably installed inside the axle frame, and a synchronous belt is provided between the rotating shaft and the synchronous shaft through a synchronous wheel sleeve.

[0010] Preferably, a fixed gear is fixedly sleeved on the outer circumference of the rotating shaft, a rotating rod is movably hinged between the first slider and the second slider, a rotating gear is fixedly connected to the outer circumference of the rotating rod, the rotating gear and the fixed gear are meshed and connected, a camera fixing plate 1 is fixedly connected between the two first sliders, and a camera fixing plate 2 is fixedly connected between the two second sliders.

[0011] Preferably, the cleaning assembly includes a fixed rack, which is fixedly connected to the limiting bracket. Visual detection cameras are installed on the top of the camera fixing plate 1 and the camera fixing plate 2, and heat dissipation grids and lenses are respectively provided on both sides of the visual detection cameras.

[0012] Preferably, a reciprocating screw is installed for internal rotation in one of the visual inspection cameras, a sliding gear is provided on the outer peripheral surface of the reciprocating screw through a one-way bearing sleeve, the sliding gear is meshed and connected with the fixed rack, a rotating block is movably assembled on the outer peripheral surface of the reciprocating screw, one side of the rotating block is fixedly connected to a connecting rod, a cleaning brush is provided on one side of the connecting rod, and the cleaning brush is in contact with the heat dissipation grille.

[0013] Preferably, the heat dissipation assembly includes a rainwater collecting block, which is fixedly connected to the top of the protective shell. A cavity is provided inside the protective shell, an inclined plate is fixedly connected to the inner wall of the cavity, and a drainage hole is provided inside the rainwater collecting block.

[0014] Preferably, an output shaft is rotatably installed inside the rainwater collecting block, and a second gear is fixedly sleeved on the outer circumference of the output shaft. A connecting shaft is rotatably installed inside the rainwater collecting block, and a first gear and a connecting rod are respectively fixedly sleeved on the outer circumference of the connecting shaft, and a float is provided at one end of the connecting rod.

[0015] Preferably, the interior of the protective shell is provided with a plurality of heat dissipation holes evenly distributed in a rectangular array, and the interior of the protective shell is rotatably installed with a plurality of rotating blocks evenly distributed in a rectangular array, a louver fan is fixedly sleeved on the outer circumference of the rotating block, and the louver fan is located on one side of the heat dissipation hole, and a synchronous connecting wheel is fixedly sleeved on the outer circumference of the rotating block, and a synchronous belt three is commonly sleeved on the outer circumference of several of the synchronous connecting wheels, and a synchronous belt two is commonly provided between one of the rotating blocks and the output shaft through a synchronous wheel sleeve.

[0016] Preferably, a temperature control device and a controller are provided inside one of the visual inspection cameras, a buzzer and an alarm light are respectively installed on the top of the protective shell, and the temperature control device, servo motor, buzzer, alarm light and lens are all electrically connected to the controller.

[0017] The working principle and beneficial effects of the present invention are:

[0018] 1. The present invention realizes efficient and stable detection of slope displacement by setting up structures such as switching components. The use of two visual detection cameras, a main and a backup, ensures that during a long detection process, even if the main camera needs to be cooled due to excessive operating temperature, the backup camera can immediately take over to ensure the continuity and accuracy of the detection. When the temperature is too high, the main camera will automatically shut down and move to the vicinity of the heat dissipation hole to cool down, effectively avoiding damage to the equipment due to long-term high-temperature operation and significantly extending the service life of the camera. The operation of the entire device is managed by an intelligent controller, which can automatically switch between the main and backup cameras according to the internal temperature of the camera, greatly reducing manual intervention and improving work efficiency.

[0019] 2. The present invention realizes the automatic cleaning function of the heat dissipation system through the setting of structures such as the cleaning component, so that the rotation of the sliding gear can drive the reciprocating screw to rotate, and then drive the rotating block to move back and forth up and down. The connecting rod also drives the cleaning brush to perform a reciprocating cleaning action on the heat dissipation grid, effectively removing dust and impurities adsorbed on the surface of the heat dissipation grid, significantly improving the heat dissipation effect of the main visual inspection camera, and ensuring that it can maintain an efficient and stable operating state for a longer period of time.

[0020] 3. The present invention is optimized for rainy days and other environmental conditions that are prone to slope damage through the configuration of heat dissipation components and other structures. Through the design of the rainwater collection block and the inclined plate, rainwater can be effectively guided and slowly fall into the cavity. At the same time, when the amount of rainwater is small, the drainage hole can quickly drain the rainwater. When the rainfall increases to exceed the drainage speed, the rising water level inside the device will trigger a series of mechanical linkages, including the rotation of the float, the connecting rod, and the first and second gears, which in turn drives the rotating block to rotate through the output shaft and the synchronous belt. The rotating block will also drive all rotating blocks to rotate synchronously through the synchronous belt, and finally drive the louver fan downward to close the heat dissipation hole, effectively preventing rainwater from intruding into the interior of the device, avoiding potential damage risks, and ensuring the continuous and stable operation of the device under adverse weather conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 is a side sectional view of the present invention;

[0024] Figure 3 It is a schematic diagram of the overall structure of the present invention from another perspective;

[0025] Figure 4 Schematic diagram of the internal structure of the present invention;

[0026] Figure 5 It is a schematic diagram of the internal structure of the present invention;

[0027] Figure 6 This is an internal structure diagram from another perspective of the present invention;

[0028] Figure 7 It is an enlarged view of the mark A of the present invention;

[0029] Figure 8 It is a schematic structural diagram of the heat dissipation assembly of the present invention;

[0030] Figure 9 Schematic diagram of the internal structure of the heat dissipation assembly of the present invention;

[0031] Figure 10 It is an enlarged view of the label B of the present invention.

[0032] In the figure: 1. Base; 2. Protective shell;

[0033] 3. Switching assembly; 301. Mounting plate; 302. Limiting bracket; 303. Horizontal slot; 304. Vertical slot; 305. Second slider; 306. First slider; 307. Support block; 308. Shaft bracket; 309. Rotating shaft; 310. Synchronous belt 1; 311. Servo motor; 312. Synchronous shaft; 313. Fixed gear; 314. Rotating gear; 315. Rotating rod; 316. Camera fixing plate 1; 317. Camera fixing plate 2;

[0034] 4. Cleaning assembly; 41. Visual inspection camera; 42. Fixed rack; 43. Sliding gear; 44. Reciprocating screw; 45. Rotating block; 46. Connecting rod; 47. Cleaning brush; 48. Heat dissipation grid; 49. Lens;

[0035] 5. Heat dissipation assembly; 501. Rainwater collection block; 502. Inclined plate; 503. Drain hole; 504. Heat dissipation hole; 505. Louver; 506. Float; 507. Linkage rod; 508. First gear; 509. Second gear; 510. Output shaft; 511. Rotating block; 512. Synchronous belt 2; 513. Synchronous pulley; 514. Synchronous belt 3;

[0036] 6. Buzzer;

[0037] 7. Warning light; 8. Fixed legs. DETAILED DESCRIPTION

[0038] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0039] Example 1

[0040] like Figures 1 to 10 As shown, this embodiment proposes a displacement measurement device based on machine vision, including a base 1, a switching component 3, a cleaning component 4 and a heat dissipation component 5. The bottom of the base 1 is fixedly connected to four fixed legs 8 evenly distributed in a rectangular array, and the top of the base 1 is fixedly connected to a protective shell 2. The switching component 3 includes a mounting plate 301, which is fixedly connected to the top of the base 1. A motor mounting seat is fixedly connected to one side of the mounting plate 301. A servo motor 311 is installed on the top of the motor mounting seat. The output end of the servo motor 311 is fixedly connected to a synchronous shaft 312 via a coupling.

[0041] The top of the base 1 is fixedly connected to two symmetrically arranged limit brackets 302, the interior of the limit bracket 302 is provided with a horizontal groove 303, the interior of the horizontal groove 303 is slidably connected to a first slider 306, the interior of the limit bracket 302 is provided with a vertical groove 304, the interior of the vertical groove 304 is slidably connected to a second slider 305, the top of the base 1 is fixedly connected to two symmetrically arranged support blocks 307, the top of the support block 307 is fixedly connected to an axis frame 308, the interior of the axis frame 308 is rotatably installed with a rotating shaft 309, the rotating shaft 309 and the synchronous shaft 312 are jointly provided with a synchronous belt 310 through a synchronous wheel 513, and by switching The arrangement of components 3 and other structures enables efficient and stable detection of slope displacement. The use of two visual inspection cameras 41, a main and a backup, ensures that during a long inspection process, even if the main camera needs to be cooled due to excessive operating temperature, the backup camera can immediately take over to ensure the continuity and accuracy of the inspection. When the temperature is too high, the main camera will automatically shut down and move to the vicinity of the heat dissipation hole 504 for cooling, effectively avoiding damage to the equipment due to long-term high-temperature operation and significantly extending the service life of the camera. The operation of the entire device is managed by an intelligent controller, which can automatically switch between the main and backup cameras according to the internal temperature of the camera, greatly reducing manual intervention and improving work efficiency.

[0042] like Figures 1 to 10 As shown, a fixed gear 313 is fixedly sleeved on the outer circumference of the rotating shaft 309, a rotating rod 315 is movably hinged between the first slider 306 and the second slider 305, a rotating gear 314 is fixedly connected to the outer circumference of the rotating rod 315, the rotating gear 314 and the fixed gear 313 are meshed and connected, a camera fixing plate 1 316 is fixedly connected between the two first sliders 306, and a camera fixing plate 2 317 is fixedly connected between the two second sliders 305.

[0043] In this embodiment, to detect slope displacement in real time, the device is first securely mounted at a suitable position and angle using its four fixing legs 8 at its base. The device then begins operation, with the primary visual inspection camera 41, mounted on camera mounting plate 1 316, activated. Its lens 49 accurately locates the slope and subsequently monitors its deformation in real time. The specific techniques for positioning and measurement are well-known and will not be elaborated upon here.

[0044] During the long detection process, the internal temperature of the main visual detection camera 41 will gradually increase. When the temperature exceeds the preset safety threshold, the temperature control device inside the camera, model ISOTMP35, will send a signal to the controller. The controller then starts the servo motor 311, and the servo motor 311 drives the synchronous shaft 312 to rotate, and then drives the two rotating shafts 309 to rotate synchronously through the synchronous belt 310. The rotation of the rotating shaft 309 drives the fixed gear 313 to rotate, and the fixed gear 313 then drives the rotating gear 314 engaged with it to rotate around the fixed shaft as the center. The rotation of the rotating gear 314 further drives the rotating rod 315 to rotate, so that the second slider 305 at one end of the rotating rod 315 moves back and forth up and down along the direction of the vertical groove 304, while the first slider 306 at the other end of the rotating rod 315 moves back and forth left and right along the direction of the horizontal groove 303.

[0045] During this process, the camera fixing plate 1 316 first moves backward. After the movement is completed, the camera fixing plate 2 317 moves downward to the original position of the camera fixing plate 1 316. At this time, the controller turns off the servo motor 311 and simultaneously starts the visual inspection camera 41 on the camera fixing plate 2 317 to take over the main visual inspection camera 41 for real-time inspection. The main visual inspection camera 41 is turned off and moved to a position close to the heat dissipation hole 504 for cooling to ensure its service life. When the temperature control device detects that the internal temperature of the main visual inspection camera 41 has dropped to an appropriate range, it will send a signal to the controller, and the controller will start the servo motor 311 again, repeating the above action to move the main visual inspection camera 41 back to the work station and continue the inspection, thereby ensuring the stability of long-term inspection.

[0046] Example 2

[0047] like Figures 1 to 10 As shown, based on the same concept as the above-mentioned embodiment 1, this embodiment also proposes that the cleaning component 4 includes a fixed rack 42, the fixed rack 42 is fixedly connected to the limit bracket 302, and the top of the camera fixing plate 1 316 and the camera fixing plate 2 317 are both installed with a visual inspection camera 41, and a heat dissipation grid 48 and a lens 49 are respectively provided on both sides of the visual inspection camera 41. Through the setting of the cleaning component 4 and other structures, the automatic cleaning function of the heat dissipation system is realized, so that the rotation of the sliding gear 43 can drive the reciprocating screw 44 to rotate, and then drive the rotating block 45 to move up and down, and also drive the cleaning brush 47 to reciprocate and clean the heat dissipation grid 48 through the connecting rod 46, thereby effectively removing dust and impurities adsorbed on the surface of the heat dissipation grid 48, significantly improving the heat dissipation effect of the main visual inspection camera 41, and ensuring that it can maintain an efficient and stable operating state for a longer time.

[0048] like Figures 1 to 10As shown, a reciprocating screw 44 is installed in a rotating manner inside one of the visual inspection cameras 41, and a sliding gear 43 is provided on the outer peripheral surface of the reciprocating screw 44 through a one-way bearing sleeve. The sliding gear 43 is meshed with a fixed rack 42, and a rotating block 45 is movably assembled on the outer peripheral surface of the reciprocating screw 44. A connecting rod 46 is fixedly connected to one side of the rotating block 45, and a cleaning brush 47 is provided on one side of the connecting rod 46. The cleaning brush 47 is in contact with the heat dissipation grille 48.

[0049] In this embodiment, when the main inspection camera moves backward due to excessive internal temperature, it drives the sliding gear 43 to move with it. During this process, the sliding gear 43 begins to rotate under the action of the fixed rack 42. As the sliding gear 43 rotates, the reciprocating screw 44 fixed on its outer circumference also rotates, thereby driving the rotating block 45 to move back and forth along the direction of the reciprocating screw 44. During the reciprocating movement of the rotating block 45, it drives the cleaning brush 47 through the connecting rod 46 to reciprocate and clean the heat dissipation grille 48 provided on the back of the visual inspection camera 41, effectively removing dust and impurities adsorbed on the surface of the heat dissipation grille 48, thereby ensuring the heat dissipation effect of the main visual inspection camera 41 and extending its service life.

[0050] Example 3

[0051] like Figures 1 to 10 As shown, based on the same concept as the above-mentioned embodiments 1 and 2, this embodiment further proposes that the heat dissipation component 5 includes a rainwater collecting block 501, which is fixedly connected to the top of the protective shell 2, and a cavity is opened inside the protective shell 2, and an inclined plate 502 is fixedly connected to the inner wall of the cavity, and a drainage hole 503 is opened inside the rainwater collecting block 501. Through the arrangement of the heat dissipation component 5 and other structures, it is optimized especially for environmental conditions such as rainy days that are prone to cause slope damage. Through the design of the rainwater collecting block 501 and the inclined plate 502, rainwater can be effectively guided and slowly fall into the cavity. At the same time, when the amount of rainwater is small, the drainage hole 503 can quickly discharge the rainwater. When the rainfall increases to exceed the discharge speed, the rising water level inside the device will trigger a series of mechanical linkages, including the rotation of the float 506, the connecting rod 507, and the first gear 508 and the second gear 509, and then drive the rotating block 511 to rotate through the output shaft 510 and the synchronous belt. The rotating block 45 will also drive all the rotating blocks 511 to rotate synchronously through the synchronous belt, and finally drive the louver fan 505 to close the heat dissipation hole 504 downward, effectively preventing rainwater from intruding into the interior of the device, avoiding potential damage risks, and ensuring the continuous and stable operation of the device under severe weather conditions.

[0052] like Figures 1 to 10As shown, an output shaft 510 is rotatably installed inside the rainwater collecting block 501, and a second gear 509 is fixedly sleeved on the outer circumference of the output shaft 510. A connecting shaft is rotatably installed inside the rainwater collecting block 501, and a first gear 508 and a connecting rod 507 are fixedly sleeved on the outer circumference of the connecting shaft, and a float 506 is provided at one end of the connecting rod 507.

[0053] like Figures 1 to 10 As shown, the interior of the protective shell 2 is provided with a number of heat dissipation holes 504 evenly distributed in a rectangular array, and the interior of the protective shell 2 is rotatably installed with a number of rotating blocks 511 evenly distributed in a rectangular array. A louver fan 505 is fixedly sleeved on the outer circumference of the rotating block 511, and the louver fan 505 is located on one side of the heat dissipation hole 504. A synchronous connecting wheel is fixedly sleeved on the outer circumference of the rotating block 511, and a synchronous belt three 514 is commonly sleeved on the outer circumference of several synchronous connecting wheels, and a synchronous belt two 512 is commonly sleeved between one of the rotating blocks 511 and the output shaft 510 through a synchronous wheel 513.

[0054] like Figures 1 to 10 As shown, a temperature control device and a controller are provided inside one of the visual inspection cameras 41, and a buzzer 6 and an alarm light 7 are respectively installed on the top of the protective shell 2. The temperature control device, the servo motor 311, the buzzer 6, the alarm light 7 and the lens 49 are all electrically connected to the controller.

[0055] In this embodiment, this device is specially designed to cope with environmental conditions such as rainy days that are prone to causing slope damage. When rain falls, it will first enter the cavity of the rainwater collection block 501 and slowly fall into the cavity under the guidance of the inclined plate 502. In the case of less rain, the rainwater will quickly drain out of the cavity through the carefully designed drainage holes 503.

[0056] When the rainfall increases and exceeds the drainage speed of rainwater, the water level inside the rainwater collection block 501 will rise accordingly, and the float 506 and the connecting rod 507 will start to rotate around the first gear 508. As the first gear 508 rotates, it will further drive the second gear 509 to rotate together;

[0057] The second gear 509 transmits the rotational torque to the rotating block 511 through the output shaft 510 and the second synchronous belt 512, causing it to start rotating. At the same time, during the rotation of the rotating block 45, it will drive all the rotating blocks 511 to rotate together through the third synchronous belt 514.

[0058] Finally, these rotating blocks 511 will drive the louver 505 to rotate downward, just like a closed gate, to achieve a tight closure of the heat dissipation holes 504. This design effectively prevents rainwater from intruding into the interior of the device when the rainfall is too heavy, thereby avoiding potential damage risks and ensuring the continued stable operation of the device under severe weather conditions.

[0059] 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 displacement measuring device based on machine vision, characterized in that: The switch assembly comprises a base, a switching assembly, a cleaning assembly and a heat dissipation assembly. The bottom of the base is fixedly connected to four fixed legs evenly distributed in a rectangular array. The top of the base is fixedly connected to a protective shell. The switching assembly comprises a mounting plate, which is fixedly connected to the top of the base. A motor mounting seat is fixedly connected to one side of the mounting plate. A servo motor is installed on the top of the motor mounting seat. The output end of the servo motor is fixedly connected to a synchronous shaft through a coupling. The top of the mounting plate is fixedly connected to two symmetrically arranged limit brackets, a transverse groove is provided inside the limit bracket, a first slider is slidably connected inside the transverse groove, a vertical groove is provided inside the limit bracket, and a second slider is slidably connected inside the vertical groove, the top of the mounting plate is fixedly connected to two symmetrically arranged support blocks, the top of the support block is fixedly connected to an axis frame, a rotating shaft is rotatably installed inside the axis frame, and a synchronous belt 1 is provided between the rotating shaft and the synchronous shaft through a synchronous wheel sleeve; A fixed gear is fixedly sleeved on the outer circumference of the rotating shaft, a rotating rod is movably hinged between the first slider and the second slider, a rotating gear is fixedly connected to the outer circumference of the rotating rod, the rotating gear is meshed with the fixed gear, a camera fixing plate 1 is fixedly connected between the two first sliders, and a camera fixing plate 2 is fixedly connected between the two second sliders; The cleaning assembly includes a fixed rack, which is fixedly connected to the limit bracket. A main visual inspection camera and a backup visual inspection camera are respectively installed on the top of the camera fixing plate 1 and the camera fixing plate 2. A heat dissipation grid and a lens are respectively provided on both sides of the main visual inspection camera and the backup visual inspection camera. The main visual inspection camera is internally rotated and installed with a reciprocating screw, and a sliding gear is provided on the outer circumference of the reciprocating screw through a one-way bearing sleeve, and the sliding gear is meshed with the fixed rack. A rotating block is movably assembled on the outer circumference of the reciprocating screw, and one side of the rotating block is fixedly connected to a connecting rod, and one side of the connecting rod is provided with a cleaning brush, and the cleaning brush is in contact with the heat dissipation grille; when the main visual inspection camera moves backward due to excessive internal temperature, the sliding gear is driven to move accordingly, and the sliding gear starts to rotate under the action of the fixed rack, and the reciprocating screw fixed on the outer circumference of the sliding gear rotates accordingly, driving the rotating block to move up and down along the direction of the reciprocating screw, and the rotating block drives the cleaning brush through the connecting rod to clean the heat dissipation grille arranged on the back of the main visual inspection camera.

2. The displacement measuring device based on machine vision according to claim 1, characterized in that: The heat dissipation component includes a rainwater collecting block, which is fixedly connected to the top of the protective shell. A cavity is provided inside the protective shell, an inclined plate is fixedly connected to the inner wall of the cavity, and a drainage hole is provided inside the rainwater collecting block.

3. The displacement measuring device based on machine vision according to claim 2, characterized in that: An output shaft is rotatably installed inside the rainwater collecting block, and a second gear is fixedly sleeved on the outer circumference of the output shaft. A connecting shaft is rotatably installed inside the rainwater collecting block, and a first gear and a connecting rod are fixedly sleeved on the outer circumference of the connecting shaft, and a float is provided at one end of the connecting rod.

4. The displacement measuring device based on machine vision according to claim 3, characterized in that: The interior of the protective shell is provided with a plurality of heat dissipation holes evenly distributed in a rectangular array, and the interior of the protective shell is rotatably installed with a plurality of rotating blocks evenly distributed in a rectangular array, and a louver fan is fixedly sleeved on the outer circumference of the rotating block, and the louver fan is located on one side of the heat dissipation hole, and a synchronous connecting wheel is fixedly sleeved on the outer circumference of the rotating block, and a synchronous belt three is commonly sleeved on the outer circumferences of several of the synchronous connecting wheels, and a synchronous belt two is commonly provided between one of the rotating blocks and the output shaft through a synchronous wheel sleeve.

5. The displacement measuring device based on machine vision according to claim 4, characterized in that: One of the visual inspection cameras is provided with a temperature control device and a controller inside, and a buzzer and an alarm light are respectively installed on the top of the protective shell. The temperature control device, servo motor, buzzer, alarm light and lens are all electrically connected to the controller.

Images