Target image displacement measurement system based on multistage relay

Abstract

The utility model discloses a multi-stage relay-based target image displacement measurement system, which comprises a plurality of groups of cameras and targets arranged in pairs, the cameras and the targets are arranged at the position of an area to be monitored by virtue of a mounting bracket below, and a signal transmitting module is arranged in each camera and is in communication connection with a mobile terminal. The cameras are arranged in a multi-stage relay sequence mode according to spatial positions, the first-stage camera is installed at a shooting starting point through an installation support below the first-stage camera, the next-stage camera is installed in an effective shooting range of the upper-stage camera, and a target corresponding to the upper-stage camera is vertically and fixedly installed above the upper end face of the next-stage camera. The target corresponding to the last stage of camera is vertically and fixedly installed in the effective shooting range of the stage of camera independently through the installation support. The slope displacement monitoring device is more suitable for slope displacement monitoring, the overall displacement deformation condition of the slope can be better measured, and the stability and safety of the slope prone to landslide are better guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of slope displacement monitoring, in particular to a target image displacement measurement system based on multi-level relay. Background Art

[0002] Slope landslide and collapse accidents often threaten the life and property safety of residents living below the slope. Therefore, in areas prone to slope collapse, it is necessary to monitor whether the slope is unstable.

[0003] Displacement is a key parameter for slope monitoring. At present, the main means of displacement monitoring include GNSS, total station, target image method, connecting pipe, etc. Among them, GNSS is the most widely used, but its solution frequency is low, and the measurement accuracy is greatly affected by the test environment. The displacement accuracy of eight-hour solution is generally at the centimeter level. The total station has high accuracy and can realize multi-point automatic measurement when equipped with special software, but the total station is an optical precision instrument and is not suitable for long-term placement in the field environment. The connecting pipe is suitable for monitoring vertical displacement and has a large measurement range, but the measurement accuracy is easily affected by the air in the pipe, and the system maintenance is difficult.

[0004] The target image method has a higher measurement accuracy, which can reach the millimeter level, and the measurement frequency can reach more than 10Hz, so it is currently widely used. The target image method measures displacement, usually by setting a target on one side of the area to be measured and a camera on the other side. The camera is set directly opposite the target and is equipped with a signal transmission module and connected to a mobile terminal. In this way, when the displacement between the target and the camera changes, the target image captured by the camera will produce corresponding deformation. The greater the displacement, the greater the degree of deformation, and thus it can realize real-time monitoring of whether the ground has been displaced and the size of the displacement.

[0005] When measuring displacement using the target image method, the target needs to be within the effective shooting range of the camera, and the distance between the two is limited. Therefore, at present, the displacement measurement system using the target image method is usually only applicable to places with short distances and regular areas, such as bridge deck deformation monitoring and lock chamber deformation monitoring. When used for slope displacement monitoring, since the slope area is usually large, it is generally necessary to set up multiple pairs of targets and cameras in pairs for monitoring and detection. However, for this method, the plane deformation of all targets is in different reference systems, and the deformation data measured by the camera is the relative change of the corresponding target position. Since different targets are independent of each other, the data measured by different targets are not correlated, and the data are not interoperable. The deformation measured by each camera cannot be directly compared, so it is impossible to directly judge the deformation development direction of the slope based on the monitoring data, which limits its application in displacement monitoring of large deformable bodies.

[0006] Therefore, how to design a solution that utilizes the measurement principle of the target image method and is more suitable for slope displacement monitoring has become a problem that needs to be considered and solved by technical personnel in this field. Utility Model Content

[0007] In view of the deficiencies of the above-mentioned prior art, the technical problem to be solved by the present invention is: how to provide a target image displacement measurement system based on multi-level relay that is suitable for slope displacement monitoring and can better obtain the overall displacement and deformation of the slope, so as to better ensure the stability and safety of slopes prone to landslide.

[0008] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0009] A target image displacement measurement system based on multi-level relay includes multiple groups of cameras and targets arranged in pairs, wherein the cameras and targets are both installed at the position of the area to be monitored by relying on the mounting bracket below, and a signal transmitting module is installed in the camera and is connected to the mobile terminal for communication. The system is characterized in that the cameras are arranged in a multi-level relay sequence according to the spatial position, the first-level camera is installed at the shooting starting point by relying on the mounting bracket below, the next-level camera is installed within the effective shooting range of the previous-level camera, the target corresponding to the previous-level camera is vertically fixedly installed above the upper end surface of the next-level camera, and the target corresponding to the last-level camera is vertically fixedly installed alone by relying on the mounting bracket within the effective shooting range of the camera of that level.

[0010] Thus, in this application, each camera is arranged in a multi-level relay sequence, and the targets corresponding to each level of camera are installed on the next level camera to form a relay target. In this way, the target position of the previous level is exactly the position of the camera of the next level. Therefore, after each camera shoots the corresponding target to obtain the displacement and deformation between the two, they can be connected in series in space to obtain the displacement and deformation within the entire area. Therefore, by using relay targets, the interconnection of data between each target is realized to achieve the docking and interactive correlation of spatial positions. After summarizing the monitoring data, the overall displacement and deformation of the (slope) within the monitored area can be obtained. It can be better applied to slope displacement monitoring to ensure its stability and safety.

[0011] Furthermore, the target as a whole is in the shape of a vertically arranged rectangular plate, and at least one side surface is set to red and forms a shooting side.

[0012] In this way, it is more convenient to shoot and calculate deformation.

[0013] Furthermore, the targets corresponding to the cameras at each level are installed according to the set azimuth angles.

[0014] In this way, targets at all levels can be installed at fixed angles, making it easy to calculate deformation and achieve overall interoperability of detection within the area.

[0015] Furthermore, the target is mounted on a corresponding camera or a mounting bracket by means of a dividing plate below.

[0016] In this way, it is convenient to adjust the target to the required installation azimuth angle by means of the indexing plate. The indexing plate itself is an existing device, which has an angle adjustment knob, and can directly adjust the azimuth angle of the upper mounting component. The specific structure is not described in detail here.

[0017] Furthermore, an azimuth sensor is also provided on the upper surface of the target, and the azimuth sensor is communicatively connected to the mobile terminal.

[0018] In this way, it can better assist in judging whether the target azimuth angle is installed in place. More importantly, during the monitoring process, when the ground deformation causes the target azimuth angle to change, the magnitude of the azimuth change can be detected and better brought into the calculation to obtain the overall change of the regional terrain.

[0019] As an arrangement mode, the shooting starting point is located at one side of the area to be monitored, and the target corresponding to the last-stage camera is located at the other side of the area to be monitored.

[0020] This method is suitable for situations where the area to be monitored (slope) is in the shape of a long and narrow strip.

[0021] As another arrangement, the shooting starting point is located adjacent to one side of the center position of the area to be monitored, two second-level cameras are arranged back to back at the center position, and the next-level cameras spread outward in a circular distribution in turn, and the targets corresponding to the last-level cameras are located around the edge of the area to be monitored.

[0022] This method is suitable for situations where the overall area (slope) to be monitored is large and relatively regular.

[0023] Furthermore, the area to be monitored is a slope area that is prone to landslide. Of course, during implementation, it can also be used in other areas that require deformation and displacement monitoring.

[0024] In summary, the utility model is more suitable for slope displacement monitoring, can better measure the overall displacement and deformation of the slope, and better ensure the stability and safety of the slope prone to landslide. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the overall layout structure of the system in Example 1, and the figure is the front view direction.

[0026] Figure 2 for Figure 1 Schematic diagram of the structure of a separate camera and the target above.

[0027] Figure 3 This is a schematic diagram of the overall layout structure of the system in Example 2, and the figure is a top view. DETAILED DESCRIPTION

[0028] The utility model is further described in detail below in conjunction with specific implementation methods.

[0029] Example 1: See Figure 1-2 A target image displacement measurement system based on multi-level relay includes a plurality of cameras 1 and targets 2 arranged in pairs, wherein the cameras 1 and the targets 2 are both installed on the slope to be monitored by means of a mounting bracket 3 below, a signal transmitting module is installed in the camera 1 and is communicatively connected with a mobile terminal (not shown in the figure), wherein the cameras 1 are arranged in a multi-level relay sequence according to the spatial position, the first-level camera is installed at the shooting starting point 4 by means of the mounting bracket below, the next-level camera is installed within the effective shooting range of the previous-level camera, the target corresponding to the previous-level camera is vertically fixedly installed above the upper end surface of the next-level camera, and the target corresponding to the last-level camera is vertically fixedly installed within the effective shooting range of the camera of that level by means of the mounting bracket alone.

[0030] Thus, in this application, each camera is arranged in a multi-level relay sequence, and the targets corresponding to the cameras at each level are installed on the cameras at the next level to form relay targets. In this way, the target position of the previous level is exactly the position of the camera at the next level. Therefore, after each camera shoots the corresponding target to obtain the displacement deformation between the two, they can be connected in series in space to obtain the displacement deformation within the entire area. Therefore, by using relay targets, the interconnection of data between each target is realized to achieve the docking and interactive association of spatial positions. After the monitoring data is summarized, the overall displacement deformation of the (slope) within the monitored area can be obtained. It can be better applied to slope displacement monitoring to ensure its stability and safety. During implementation, each camera shoots the corresponding target to obtain the target image deformation, which is then converted into the spatial displacement deformation between the two. This belongs to the existing target image method displacement measurement technology and will not be introduced in detail here.

[0031] The target 2 is in the shape of a vertically arranged rectangular plate as a whole, and at least one side surface is set to be red and forms a shooting side.

[0032] In this way, it is more convenient to shoot and calculate deformation.

[0033] Among them, the targets 2 corresponding to the cameras at each level are installed according to the set azimuth angles.

[0034] In this way, targets at all levels can be installed at fixed angles, making it easy to calculate deformation and achieve overall interoperability of detection within the area.

[0035] The target 2 is mounted on a corresponding camera or mounting bracket by means of a dividing plate 5 below.

[0036] In this way, it is convenient to adjust the target to the required installation azimuth angle by means of the indexing plate. The indexing plate itself is an existing device, which has an angle adjustment knob, and can directly adjust the azimuth angle of the upper mounting component. The specific structure is not described in detail here.

[0037] Among them, an azimuth sensor 6 is also arranged on the upper surface of the target 2, and the azimuth sensor is communicatively connected with the mobile terminal.

[0038] In this way, it can better assist in judging whether the target azimuth angle is installed in place. More importantly, during the monitoring process, when the ground deformation causes the target azimuth angle to change, the magnitude of the azimuth change can be detected and better brought into the calculation to obtain the overall change of the regional terrain.

[0039] In this embodiment, the shooting starting point 4 is located on one side of the slope to be monitored, and the target corresponding to the last-stage camera is located on the other side of the slope to be monitored.

[0040] This method is suitable for situations where the slope to be monitored is in the shape of a long and narrow strip.

[0041] Embodiment 2: Compared with Embodiment 1, the difference between this embodiment and Embodiment 1 is that the arrangement structure of each level of camera 1 and the corresponding target 2 is different, and the rest of the structure is the same, see Figure 3 In this embodiment, the shooting starting point 4 is located adjacent to one side of the center position of the slope to be monitored. Two second-level cameras are arranged back to back at the center position. The next-level cameras spread outward in a circular distribution in turn. The targets corresponding to the last-level cameras are located around the edge of the slope to be monitored.

[0042] This method is suitable for situations where the overall area of ​​the slope to be monitored is large and relatively regular.

Claims

1. A target image displacement measurement system based on multi-stage relay, comprising a plurality of sets of cameras and targets arranged in pairs, wherein the cameras and targets are both installed at the position of the area to be monitored by means of the mounting bracket below, and a signal transmitting module is installed in the camera and is connected to the mobile terminal for communication, characterized in that: The cameras are arranged in a multi-level relay sequence according to their spatial positions. The first-level camera is installed at the shooting starting point by relying on the mounting bracket below, the next-level camera is installed within the effective shooting range of the previous-level camera, the target corresponding to the previous-level camera is vertically fixedly installed above the upper end surface of the next-level camera, and the target corresponding to the last-level camera is vertically fixedly installed alone by relying on the mounting bracket within the effective shooting range of the camera of this level.

2. The target image displacement measurement system based on multi-stage relay as claimed in claim 1, characterized in that: The target is in the shape of a vertically arranged rectangular plate as a whole, and at least one side surface is set to be red and forms a shooting side.

3. The target image displacement measurement system based on multi-stage relay as claimed in claim 1, characterized in that: The targets corresponding to cameras at each level are installed according to the set azimuth angles.

4. The target image displacement measurement system based on multi-stage relay as claimed in claim 3, characterized in that: The target is mounted on the corresponding camera or mounting bracket with a dividing plate below.

5. The target image displacement measurement system based on multi-stage relay as claimed in claim 3, characterized in that: An azimuth sensor is also provided on the upper surface of the target, and the azimuth sensor is communicatively connected to the mobile terminal.

6. The target image displacement measurement system based on multi-stage relay as claimed in claim 1, characterized in that: The shooting starting point is located at one side of the area to be monitored, and the target corresponding to the last-stage camera is located at the other side of the area to be monitored.

7. The target image displacement measurement system based on multi-stage relay as claimed in claim 1, characterized in that: The shooting starting point is located adjacent to one side of the center position of the monitored area. Two second-level cameras are arranged back to back at the center position. The next-level cameras spread outward in a circular distribution in turn. The targets corresponding to the last-level cameras are located around the edge of the monitored area.

8. The target image displacement measurement system based on multi-stage relay as claimed in claim 1, characterized in that: The area to be monitored is an area of ​​slopes that are prone to landslide.

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