Deformation monitoring device based on photogrammetry

Abstract

The utility model provides a deformation monitoring device based on photogrammetry, and relates to the technical field of bridge pier deformation monitoring, a mark comprises a mounting seat fixed on a bridge pier and a plurality of high-precision industrial cameras used for monitoring the displacement of the mark, and one side of the mounting seat is inserted with a lifting box capable of longitudinally lifting. A pressure cavity is formed in the lifting box, an altitude sensor used for monitoring the elevation settlement amount of the bridge pier is arranged in the pressure cavity, a mounting frame is fixedly connected into the lifting box, the arranged pressure sensor can detect the contact pressure between the mounting base and the bridge pier in real time, and it is guaranteed that after the mounting base is fixed, the height of the bridge pier is adjusted. And the connection firmness strength between the mounting seat and the pier can be directly judged through the reading of the pressure sensor.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge pier monitoring, in particular to a variable monitoring device based on photogrammetry. Background Art

[0002] Bridge piers are the intermediate supporting structures in bridges with two or more spans, except for the abutments at both ends that connect to the embankment. During the construction process of bridge piers, due to the special construction location, such as rivers, the bottom of the piers is relatively soft. Therefore, in order to ensure the stability of the piers, it is necessary to monitor the settlement and horizontal displacement of the piers in real time during the construction process.

[0003] Therefore, a settlement observation device in the prior art has a publication number of CN211042181U. When settlement monitoring is required, a driving component drives the baffle to move so that the baffle opens the observation port, and the monitoring personnel hold the monitoring camera and carry out normal monitoring operations through the observation port. The device is convenient, simple, quick and labor-saving to use, which is beneficial to improving the settlement monitoring operation effect. When the monitoring operation is completed, the driving component is controlled to reversely drive the baffle to move and reset and cover the observation port again, so that the observation mark can be protected again.

[0004] However, when the camera takes pictures, in order to ensure image clarity, it needs to consider factors such as air humidity, temperature, and brightness. As a result, the shooting interval time period is not fixed. Therefore, once the monitored object sinks, personnel cannot observe it in time and take corresponding remedial measures. Utility Model Content

[0005] The utility model aims to solve the problems existing in the prior art and proposes a deformation monitoring device based on photogrammetry.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a deformation monitoring device based on photogrammetry, the mark includes a mounting seat for fixing on the bridge pier and a plurality of high-precision industrial cameras for monitoring the displacement of the mark, a lifting box for longitudinal lifting is plugged into one side of the mounting seat, a pressure chamber is arranged in the lifting box, an altitude sensor for monitoring the elevation of the bridge pier is arranged in the pressure chamber, a mounting frame is fixedly connected in the lifting box, and a first monitoring part for monitoring the displacement of the bridge pier in the X-axis direction and a second monitoring part for monitoring the displacement of the bridge pier in the Y-axis direction are arranged on the mounting frame;

[0007] The first monitoring part includes two first spring rods respectively movably connected to the side of the mounting frame, the telescopic ends of the first spring rods are connected to connecting lines that penetrate the outer wall of the lifting box and extend outward to be rotatably connected to the side of the mounting seat, and the side edges of the telescopic ends of the first spring rods are fixedly connected to infrared ranging sensors for monitoring the telescopic length of the first spring rods;

[0008] The second monitoring part includes a second spring rod fixed on the axial surface of the first spring rod cylinder body close to one end of the telescopic rod, and an angle ruler fixed in the lifting box and with the center of the circle coinciding with the rotation point of the first spring rod. The telescopic end of the second spring rod is provided with a horizontal displacement sensor, and the telescopic end is slidably connected to the surface of the angle ruler. Several of the high-precision industrial cameras are used to monitor the telescopic ends of the first spring rod and the second spring rod respectively.

[0009] Furthermore: a data processing component for data processing is also arranged in the lifting box, the data processing component includes an automatic data calculation platform for data processing, a wireless transmission controller, and a battery for power supply, and a solar panel component electrically connected to the battery is fixedly connected to the top of the lifting box.

[0010] Furthermore: the mounting seat is fixed on the bridge pier by expansion bolts, and a connecting cover is fixedly connected to the mounting seat, and a pressure sensor for monitoring the contact pressure between the bridge pier and the mounting seat is arranged in the connecting cover.

[0011] Furthermore: the infrared ranging sensor, horizontal displacement sensor, high-precision industrial camera, pressure sensor, altitude sensor, and lighting fixture are all electrically connected to the data processing component.

[0012] Furthermore: a guide rail extending longitudinally and plugged into one side of the lifting box is fixedly connected to one side of the mounting seat, and an electric telescopic rod for leveling the lifting box is fixedly connected to the guide rail.

[0013] Further: the side of the lifting box is embedded with a rolling connection with a card ball for the connecting line to pass through.

[0014] Further: a lighting fixture is arranged in the lifting box.

[0015] Compared with the prior art, the advantages and positive effects of the utility model are:

[0016] 1. In the utility model, the settlement height of the bridge pier can be measured in real time by setting an altitude sensor, and the displacement of the bridge pier along the X-axis direction can be obtained in real time by setting a connecting line and a first spring rod, using an infrared ranging sensor and a high-precision industrial camera, and the displacement of the bridge pier along the Y-axis direction can be obtained in real time by setting a second spring rod, an angle ruler and a high-precision industrial camera, and the above-mentioned detection parts are all arranged in a relatively closed lifting box, so that they will not be affected by the external environment when shooting images.

[0017] 2. In the present invention, the pressure sensor can detect the contact pressure between the mounting seat and the bridge pier in real time, ensuring that after the mounting seat is fixed, the connection strength between the mounting seat and the bridge pier can be directly determined by the reading of the pressure sensor. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A three-dimensional structural schematic diagram of a deformation monitoring device based on photogrammetry is proposed for the utility model;

[0019] Figure 2 The utility model proposes a deformation monitoring device based on photogrammetry Figure 1 A schematic cross-sectional structure diagram of ;

[0020] Figure 3 for Figure 2 The enlarged view of point A in the middle;

[0021] Figure 4 for Figure 2 Enlarged view of point B in the middle.

[0022] Legend: 1. Mounting base; 2. Solar panel assembly; 3. Connecting cover; 4. Pressure sensor; 5. Lifting box; 6. Connecting wire; 7. Electric telescopic rod; 8. Guide rail; 9. Lighting fixture; 10. Pressure chamber; 11. Altitude sensor; 12. Data processing assembly; 13. Mounting frame; 14. First spring rod; 15. Second spring rod; 16. Card ball; 17. Infrared ranging sensor; 18. Horizontal displacement sensor; 19. High-precision industrial camera; 20. Angle ruler. DETAILED DESCRIPTION

[0023] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0024] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments of the following disclosure.

[0025] like Figure 1-4 As shown, a deformation monitoring device based on photogrammetry includes a mounting base 1 for fixing on a bridge pier and a plurality of high-precision industrial cameras 19 for monitoring displacement of a mark. A lifting box 5 for longitudinal lifting is plugged into one side of the mounting base 1. A pressure chamber 10 is arranged in the lifting box 5. An altitude sensor 11 for monitoring the elevation of the bridge pier is arranged in the pressure chamber 10. A mounting frame 13 is fixedly connected in the lifting box 5. The mounting frame 13 is provided with a first monitoring part for monitoring displacement in the X-axis direction of the bridge pier and a second monitoring part for monitoring displacement in the Y-axis direction of the bridge pier.

[0026] Specific:

[0027] The mounting base 1 is fixed on the bridge pier, so when the bridge pier sinks, the mounting base 1 and the lifting box 5 will be driven to sink at the same time. Therefore, the height of the lifting box 5 measured by the altitude sensor 11 is the height of the bridge pier.

[0028] The first monitoring part includes two first spring rods 14 movably connected to the side of the mounting frame 13, and the telescopic ends of the first spring rods 14 are connected to the connecting wires 6 that penetrate the outer wall of the lifting box 5 and extend outward to be rotatably connected to the side of the mounting seat 1. The side of the telescopic end of the first spring rod 14 is fixedly connected to an infrared ranging sensor 17 for monitoring the telescopic length of the first spring rod 14;

[0029] Specific:

[0030] The displacement in the X-axis direction is the extension direction of two adjacent bridge piers. Therefore, when the bridge pier is displaced along the X-axis direction, the connecting line 6 will drive the telescopic end of the first spring rod 14 to lengthen, thereby realizing the movement of the infrared distance sensor 17 at the telescopic end of the first spring rod 14. The displacement of the telescopic end of the first spring rod 14 can be measured in real time by the infrared distance sensor 17, thereby determining the displacement of the bridge pier along the X-axis direction, that is, determining whether the bridge pier is displaced.

[0031] In addition, the first spring rod 14 is connected to the mounting bracket 13 via a universal joint.

[0032] The second monitoring part includes a second spring rod 15 fixed on the axial surface of the cylinder body of the first spring rod 14 near one end of the telescopic rod, and an angle ruler 20 fixed in the lifting box 5 and having its center coincident with the rotation point of the first spring rod 14. The telescopic end of the second spring rod 15 is provided with a horizontal displacement sensor 18, and the telescopic end is slidably connected to the surface of the angle ruler 20. A number of high-precision industrial cameras 19 are respectively used to monitor the telescopic ends of the first spring rod 14 and the second spring rod 15.

[0033] Specific:

[0034] When the pier is displaced along the Y-axis direction, because the first spring rod 14 is movably connected to the mounting frame 13, the connecting line 6 on the pier will drive the first spring rod 14 and the second spring rod 15 to swing, and the telescopic end of the second spring rod 15 will swing on the angle ruler 20. The high-precision industrial camera 19 at the corresponding position can monitor the position of the telescopic end of the second spring rod 15 on the angle ruler 20 in real time, and the offset angle of the pier can be determined by the scale number at the corresponding position. The horizontal displacement sensor 18 can detect the displacement of the pier along the Y-axis direction in real time.

[0035] In addition, the second spring rod 15 is elastically retractable, and during the lifting and leveling process of the lifting box 5, the retractable end of the second spring rod 15 can be elastically retracted to ensure that the retractable end of the second spring rod 15 always contacts the surface of the angle ruler 20;

[0036] To summarize, the altitude sensor 11 is set to measure the settlement of the bridge pier, and the high-precision industrial camera 19 takes pictures of the expansion and contraction of the first spring rod 14 and the position of the second spring rod 15 on the angle ruler 20 at fixed intervals. The displacement of the bridge pier is determined by analyzing and judging the data of the pictures in different time periods. Because the altitude sensor 11, the first measuring part and the second measuring part are all arranged in the lifting box 5, the lid of the lifting box 5 is closed, and the altitude sensor 11, the first measuring part and the second measuring part are stored in a relatively sealed environment, and various environmental factors such as temperature, humidity, and wind speed are relatively stable.

[0037] A lighting fixture 9 is arranged in the lifting box 5 .

[0038] The infrared distance sensor 17 , the horizontal displacement sensor 18 , the high-precision industrial camera 19 , the pressure sensor 4 , the altitude sensor 11 , and the lighting fixture 9 are all electrically connected to the data processing component 12 .

[0039] A data processing component 12 for data processing is also provided in the lifting box 5. The data processing component 12 includes an automatic data calculation platform for data processing, a wireless transmission controller, and a battery for power supply. A solar panel assembly 2 electrically connected to the battery is fixedly connected to the top of the lifting box 5.

[0040] Specific:

[0041] The lighting fixture 9 can be started when the high-precision industrial camera 19 is running to ensure that the lifting box 5 is at a stable light intensity when the high-precision industrial camera 19 is in use. The battery stores the power generated by the solar panel assembly 2 and is used to power the electrical equipment in the device when the device is running. The automatic data calculation platform and wireless transmission controller can calculate the values ​​measured by the high-precision industrial camera 19, pressure sensor 4, altitude sensor 11, infrared ranging sensor 17 and horizontal displacement sensor 18, and generate a table. The generated table and data are transmitted to the terminal through the wireless transmission controller for viewing and analysis by monitoring personnel.

[0042] The mounting seat 1 is fixed on the bridge pier by expansion bolts, and a connection cover 3 is fixedly connected to the mounting seat 1 . A pressure sensor 4 for monitoring the contact pressure between the bridge pier and the mounting seat 1 is arranged in the connection cover 3 .

[0043] Specific:

[0044] The set pressure sensor 4 can measure the contact pressure between the mounting base 1 and the bridge pier in real time. When the value of the pressure sensor 4 changes, it indicates that shaking and displacement occur between the mounting base 1 and the bridge pier, which is convenient for personnel to remotely analyze the installation strength of the mounting base 1.

[0045] A guide rail 8 extending longitudinally and plugged into one side of the lifting box 5 is fixedly connected to one side of the mounting base 1 , and an electric telescopic rod 7 for leveling the lifting box 5 is fixedly connected to the guide rail 8 .

[0046] Specific:

[0047] When the lifting box 5 descends a certain distance, the lifting box 5 can be extended along the surface of the guide rail 8 by extending the electric telescopic rod 7, and the electric telescopic rod 7 cooperates with the altitude sensor 11, that is, after the lifting box 5 rises to the altitude sensor 11 and the value is reset to zero, the time of the next high-precision industrial camera 19 shooting, the value measured by the altitude sensor 11 is the distance the pier has sunk, and the values ​​read by the infrared ranging sensor 17, the horizontal displacement sensor 18 and the angle ruler 20 are the displacements of the pier along the X-axis and the Y-axis.

[0048] A locking ball 16 for the connecting line 6 to pass through is embedded in the side of the lifting box 5 and is rollingly connected.

[0049] Specific:

[0050] The locking ball 16 can change with the direction of the connecting line 6, that is, to ensure that the portion of the connecting line 6 between the first spring rod 14 and the bridge pier remains in a straight line.

[0051] Working principle: Use expansion bolts to fix the mounting base 1 on the bridge pier. After a fixed time interval, the lighting fixture 9 lights up the inside of the lifting box 5, and uses the altitude sensor 11 to detect the longitudinal sinking of the bridge pier. Use the high-precision industrial camera 19 to shoot the expansion and contraction amount of the telescopic rod of the first spring rod 14 and the value of the infrared ranging sensor 17, and then use the high-precision industrial camera 19 at other positions to shoot the relative position of the telescopic end of the second spring rod 15 on the angle ruler 20, obtain the rotation angle of the second spring rod 15 and the value of the horizontal displacement sensor 18 on the second spring rod 15, and transmit the obtained values ​​to the terminal after being processed by the data processing component 12.

[0052] The wiring diagram of the solar panel assembly 2, pressure sensor 4, electric telescopic rod 7, lighting fixture 9, altitude sensor 11, data processing assembly 12, infrared ranging sensor 17, horizontal displacement sensor 18, and high-precision industrial camera 19 in the utility model belongs to the common knowledge in the field, and its working principle is a well-known technology. The model is selected according to the actual use. Therefore, the control method and wiring arrangement of the solar panel assembly 2, pressure sensor 4, electric telescopic rod 7, lighting fixture 9, altitude sensor 11, data processing assembly 12, infrared ranging sensor 17, horizontal displacement sensor 18, and high-precision industrial camera 19 are no longer explained in detail.

[0053] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A deformation monitoring device based on photogrammetry, the marker comprising a mounting base (1) for fixing on a bridge pier and a plurality of high-precision industrial cameras (19) for monitoring the displacement of the marker, characterized in that: A longitudinal lifting box (5) is plugged into one side of the mounting seat (1), a pressure chamber (10) is arranged inside the lifting box (5), an altitude sensor (11) for monitoring the elevation of the bridge pier is arranged inside the pressure chamber (10), a mounting frame (13) is fixedly connected inside the lifting box (5), and a first monitoring part for monitoring the displacement of the bridge pier in the X-axis direction and a second monitoring part for monitoring the displacement of the bridge pier in the Y-axis direction are arranged on the mounting frame (13); The first monitoring unit comprises two first spring rods (14) respectively movably connected to the side of the mounting frame (13); the telescopic ends of the first spring rods (14) are connected to connecting wires (6) which penetrate the outer wall of the lifting box (5) and extend outward to be rotatably connected to the side of the mounting seat (1); and the side edges of the telescopic ends of the first spring rods (14) are fixedly connected to infrared distance measuring sensors (17) for monitoring the telescopic length of the first spring rods (14); The second monitoring unit comprises a second spring rod (15) fixed on the axial surface of the cylinder body of the first spring rod (14) close to one end of the telescopic rod, and an angle ruler (20) fixed in the lifting box (5) and having its center coincident with the rotation point of the first spring rod (14); a horizontal displacement sensor (18) is provided at the telescopic end of the second spring rod (15), and the telescopic end is slidably connected to the surface of the angle ruler (20); and a plurality of high-precision industrial cameras (19) are respectively used to monitor the telescopic ends of the first spring rod (14) and the second spring rod (15).

2. The deformation monitoring device based on photogrammetry according to claim 1, characterized in that: The lifting box (5) is also provided with a data processing component (12) for data processing, the data processing component (12) comprising an automatic data calculation platform for data processing, a wireless transmission controller, and a storage battery for power supply, and the top of the lifting box (5) is fixedly connected to a solar panel component (2) electrically connected to the storage battery.

3. The deformation monitoring device based on photogrammetry according to claim 1, characterized in that: The mounting seat (1) is fixed to the bridge pier by means of expansion bolts, and a connection cover (3) is fixedly connected to the mounting seat (1), wherein a pressure sensor (4) for monitoring the contact pressure between the bridge pier and the mounting seat (1) is arranged in the connection cover (3).

4. The deformation monitoring device based on photogrammetry according to claim 1, characterized in that: A lighting fixture (9) is arranged inside the lifting box (5).

5. The deformation monitoring device based on photogrammetry according to claim 1, characterized in that: The infrared distance measuring sensor (17), the horizontal displacement sensor (18), the high-precision industrial camera (19), the pressure sensor (4), the altitude sensor (11), and the lighting fixture (9) are all electrically connected to the data processing component (12).

6. The deformation monitoring device based on photogrammetry according to claim 1, characterized in that: A guide rail (8) extending longitudinally and plugged into one side of the lifting box (5) is fixedly connected to one side of the mounting seat (1); an electric telescopic rod (7) for leveling the lifting box (5) is fixedly connected to the guide rail (8).

7. The deformation monitoring device based on photogrammetry according to claim 1, characterized in that: The lifting box (5) has a side edge embedded therein with a rolling connection having a locking ball (16) for the connecting wire (6) to pass through.

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