A three-dimensional displacement monitoring instrument and its monitoring visualization system

Abstract

The present invention relates to the technical field of three-dimensional displacement monitoring, and specifically to a three-dimensional displacement monitor and a monitoring visualization system thereof, comprising a tripod and a high-speed camera. The present invention monitors the temperature and humidity changes through a temperature and humidity sensor, and cooperates with the start-up of an atomizer to work, thereby adaptively adjusting the temperature and humidity values ​​of the working area of ​​the monitor, and improving environmental adaptability. The arranged air guide can change and accelerate the flow direction and flow rate of the regional airflow while performing local shading of the monitor, thereby improving the uniformity of the temperature in the area where the monitor is located, and improving the accuracy of three-dimensional displacement data acquisition, and providing effective data support for subsequent image generation and identification. The present invention continuously captures in a short time through a high-speed camera, and tracks the displacement and strain of each pixel point within a field of view, establishes a 3D digital image, and accurately collects and measures the three-dimensional displacement data of an operation object.

Description

Technical Field

[0001] The invention relates to the technical field of three-dimensional displacement monitoring, in particular to a three-dimensional displacement monitoring instrument and a monitoring visualization system thereof. Background Art

[0002] A 3D displacement and strain meter is a device used to measure the displacement and strain of an object in three-dimensional space. It mainly uses digital image correlation technology to accurately measure the displacement and strain of each pixel on the surface of an object. This type of meter usually includes a high-resolution camera, image processing software, and necessary hardware equipment, and can achieve real-time monitoring and analysis of the deformation of the surface of an object without contacting the object being measured.

[0003] Three-dimensional displacement and strain measuring instruments are widely used in many fields. Among them, in the field of civil engineering, they are mainly used for health monitoring and safety assessment of structures such as bridges and buildings. The three-dimensional displacement monitor is used to continuously take pictures and compare the bridge or building structure within a predetermined time and location to determine whether the structure has deformed. However, in this process, because the monitored objects are mostly outdoors or in natural environments, when using a three-dimensional displacement monitor for monitoring, it is necessary to pay attention to the adverse effects of changes in the monitoring area environment, such as thermal expansion and contraction of the internal components of the monitor due to changes in temperature or humidity, and a decrease in the insulation resistance to ground of the internal bridge or amplifier of the monitor, resulting in a large zero drift and making the system unstable. Summary of the invention

[0004] In order to address the deficiencies of the prior art, the present invention provides a three-dimensional displacement monitor, thereby solving the problem that the prior displacement monitor is difficult to avoid the negative interference caused by changes in environmental factors, increases the limitations of the monitor's use occasions and the amount of error in collected data.

[0005] The technical solution adopted by the present invention to solve its technical problem is a three-dimensional displacement monitor, which includes a tripod and a high-speed camera. The tripod legs are telescopic structures, and the telescopic cavities of the tripod legs are filled with inert gas. The high-speed camera is arranged on the tripod. In addition, it also includes a base, which is fixedly installed on the upper part of the tripod by means of a hinge. Two sections of rods are symmetrically installed at both ends of the base by means of a hinge. The two sections of rods are telescopic structures, and a monitoring platform is fixedly installed at the telescopic ends of the two sections of rods, and the high-speed camera is installed on the monitoring platform.

[0006] Preferably, a compensation cylinder is installed in the middle of the monitoring platform by means of rotational fit, and the high-speed camera is installed on the upper end of the compensation cylinder by means of hinged connection.

[0007] Preferably, a heating wire for temperature compensation in a low-temperature environment is provided on the inner side of the compensation cylinder, grooves are provided circumferentially on the middle outer wall of the compensation cylinder, a clamping bolt is installed in the middle of the monitoring platform by threaded fitting, and the end of the clamping bolt is fitted with the groove.

[0008] Preferably, a shielding rod is slidably mounted in the middle of the monitoring platform, the shielding rod is located on one side of the high-speed camera, a backlight panel is rotatably mounted on the upper end of the shielding rod, and the backlight panel is located above the high-speed camera.

[0009] Preferably, dust removal holes are evenly opened in the middle of the monitoring platform, a dust removal pipe is movably installed in the dust removal hole, and the air flow outlet end of the dust removal pipe is tilted to point toward the lens part of the high-speed camera.

[0010] Preferably, the multiple legs of the tripod are connected together with a reinforcing strut by a hinged manner, a laser sensor and a socket for mounting the laser sensor are provided at the middle and lower part of the tripod, a plurality of elastic claws are circumferentially provided on the socket, and the plurality of claws are slidably inserted on the reinforcing strut in a contracted state, and a receiver for receiving the light source of the laser sensor is provided at the installation ground position below the tripod.

[0011] Preferably, a plurality of vertical poles are arranged in the middle of the tripod, the vertical poles are staggered with the legs of the tripod, and a slip ring is installed on the upper ends of the plurality of vertical poles. The upper part of the tripod passes through the middle cavity of the slip ring, and an atomizer ring is rotatably installed at the outer contour position of the slip ring, and an atomizer for humidity regulation is fixedly installed on the atomizer ring.

[0012] Preferably, the atomizer is located below the horizontal plane where the monitoring platform is located, the inner ring surface of the atomizer ring is provided with a gear ring, an atomizer motor is fixedly installed on the slip ring, an atomizer gear is fixedly installed on the output shaft of the atomizer motor, and the atomizer gear is meshed with the gear ring, an atomizer flow channel connected to the atomizer output port is provided on the inner side of the atomizer ring, a plurality of atomizer rods are evenly installed on the outer ring surface of the atomizer ring, the atomizer rods are connected to the atomization flow channel, and atomizer holes are evenly opened on the atomizer rods.

[0013] Preferably, the atomizer rod is arranged on the outside of the atomizer ring in an incomplete circular contour path, and several atomizer rods are interrupted and discontinuous on both sides of the atomizer position. The atomizer rod includes a horizontal portion and an inclined portion. The horizontal portion of the atomizer rod is fixedly connected to the atomizer ring, and the inclined portion of the atomizer ring extends obliquely away from the axis of the atomizer ring. The monitoring platform is located on the inner side of the surrounding contour of the atomizer rod. Air guide plates are provided at the inclined portion and the horizontal portion of the atomizer rod, and there is a discontinuity between two adjacent air guide plates, and several air guide plates are arranged obliquely in the shape of badminton feathers.

[0014] The present invention also provides a three-dimensional displacement monitoring visualization system, which includes a lighting system and an image display and processing controller used in conjunction with a high-speed camera.

[0015] Beneficial effects of the present invention:

[0016] (1) The two monitoring platforms arranged relatively to each other in the present invention can respectively control the installation orientation of the two high-speed cameras and the temperature of the working area, thereby enriching the diversity of data collection occasions and improving the accuracy of continuous three-dimensional displacement monitoring data.

[0017] (2) The present invention monitors the temperature and humidity changes through the temperature and humidity sensor, and cooperates with the atomizer to start working, so as to adaptively adjust the temperature and humidity values ​​of the working area of ​​the monitor to improve the environmental adaptability. The air guide plate can change and accelerate the direction and velocity of the regional airflow while partially shading the monitor, thereby improving the uniformity of the temperature in the area where the monitor is located and improving the accuracy of the three-dimensional displacement data collection, providing effective data support for subsequent image generation and identification.

[0018] (3) The present invention uses a high-speed camera to continuously capture images in a short period of time, and tracks the displacement and strain of each pixel point within the field of view to establish a 3D digital image, thereby accurately collecting and measuring the three-dimensional displacement data of the operating object. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0020] Figure 1 It is a schematic diagram of the overall connection structure of the present invention.

[0021] Figure 2 for Figure 1 main view.

[0022] Figure 3 for Figure 1 Side view of.

[0023] Figure 4 Schematic diagram of the spatial arrangement of the atomizer rod and the atomizer sheet (partially shown) in the present invention.

[0024] Figure 5 It is a schematic diagram of the positional relationship between the monitoring platform and the atomization ring in the present invention.

[0025] Figure 6 Schematic diagram of the positional relationship between the monitoring platform and the high-speed camera in the present invention.

[0026] In the figure: 1. tripod; 2. high-speed camera; 3. base; 4. two-section rod; 40. temperature and humidity sensor; 5. monitoring platform; 51. compensation tube; 52. groove; 53. tightening bolt; 54. shielding rod; 55. backlight plate; 56. dust removal pipe; 11. reinforcement support rod; 12. laser sensor; 13. holder; 14. receiver; 6. vertical pole; 61. slip ring; 62. atomizer ring; 63. atomizer; 64. gear ring; 65. atomizer motor; 66. atomizer gear; 67. atomizer rod; 68. air guide plate. DETAILED DESCRIPTION

[0027] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0028] The embodiment of the present invention provides a three-dimensional displacement monitor, which solves the problem that the existing displacement monitor is difficult to avoid the negative interference caused by changes in environmental factors, increases the limitations of the use occasions of the monitor and the amount of error in collected data.

[0029] like Figures 1 to 3 As shown, a preferred embodiment of the present invention proposes a three-dimensional displacement monitor, including a tripod 1 and a high-speed camera 2. The legs of the tripod 1 are telescopic structures, and the telescopic cavities of the legs of the tripod 1 are filled with inert gas. The high-speed camera 2 is arranged on the tripod 1. In addition, it also includes a base 3, which is fixedly installed on the upper part of the tripod 1 by a hinged manner. Two-section rods 4 are symmetrically installed at both ends of the base 3 by a hinged manner. The two-section rods 4 are telescopic structures. A monitoring platform 5 is fixedly installed at the telescopic end of the two-section rod 4, and the high-speed camera 2 is installed on the monitoring platform 5.

[0030] The monitor of the present invention adopts the VIC-3D high-speed measurement system, which includes two highly integrated high-speed cameras 2 and has the relevant advantages of 3D digital images. By continuously capturing in a short period of time and tracking the displacement and strain of each pixel point within the field of view, the three-dimensional displacement monitoring and measurement of the working object are carried out. The stable support characteristics of the tripod 1 can provide a stable fulcrum for the capture of the high-speed camera 2, reducing the monitoring error. At the same time, the two-way extension and relatively independent articulated rotation positioning of the two two-section rods 4 can be used to enable the two high-speed cameras 2 under monitoring to monitor the three-dimensional displacement deformation from different directions or height positions, enriching the diversity of data collection and improving the accuracy of monitoring data measurement.

[0031] Further, such as Figure 6As shown, a compensation cylinder 51 is installed in the middle of the monitoring platform 5 by means of rotational cooperation, the high-speed camera 2 is installed on the upper end of the compensation cylinder 51 by means of hinged connection, a heating wire is provided on the inner side of the compensation cylinder 51 for temperature compensation in a low temperature environment, a groove 52 is provided circumferentially on the middle outer wall of the compensation cylinder 51, a tightening bolt 53 is installed in the middle of the monitoring platform 5 by means of threaded cooperation, and the end of the tightening bolt 53 is fitted with the groove 52, a temperature and humidity sensor 40 is fixedly installed on the second-section rod 4, and the temperature and humidity sensor 40 is located below the compensation cylinder 51.

[0032] The two compensating cylinders 51 arranged opposite to each other can respectively control the installation orientation of the two high-speed cameras 2 and regulate the temperature of the working area. When the monitor is used in a low-temperature environment, the heating wire is started to work to compensate for the temperature of the working area of ​​the high-speed camera 2, thereby reducing the problem of decreased signal transmission rate of electronic components in the high-speed camera 2 and its auxiliary components caused by the low-temperature environment. By using the temperature and humidity sensor 40, temperature and humidity monitoring and early warning operations can be carried out simultaneously, enriching the diversity of data collection occasions and improving the accuracy of continuous three-dimensional displacement monitoring data.

[0033] Further, such as Figure 5 and Figure 6 As shown, a shielding rod 54 is slidably installed in the middle of the monitoring platform 5, and the shielding rod 54 is located on one side of the high-speed camera 2. A backlight plate 55 is installed on the upper end of the shielding rod 54 by rotational cooperation, and the backlight plate 55 is located above the high-speed camera 2.

[0034] The backlight panel 55 provided in the present invention can be manually adjusted in height and angle after the high-speed camera 2 is installed, thereby avoiding internal heating or lens flare caused by the high-speed camera 2 being exposed to additional light during operation, thereby improving the service life of the high-speed camera 2 and the stability and clarity of the high-speed camera 2 when shooting.

[0035] Further, such as Figure 6 As shown, dust removal holes are evenly opened in the middle of the monitoring platform 5, and a dust removal pipe 56 is movably installed in the dust removal hole, and the air flow outlet end of the dust removal pipe 56 is tilted to point to the lens part of the high-speed camera 2.

[0036] Air flow is introduced into the dust removal pipe 56 through an external air source, and self-cleaning of the lens area of ​​the high-speed camera 2 can be achieved by air blowing, thereby reducing or avoiding the phenomenon of decreased lens sensitivity or obstruction of the field of view caused by the adhesion of suspended dust in the monitoring environment, and improving the stability of continuous operation of the monitor.

[0037] Further, such as Figure 1 and Figure 3As shown, the multiple legs of the tripod 1 are connected together with a reinforcement rod 11 by a hinged manner, and a laser sensor 12 and a holder 13 for mounting the laser sensor 12 are provided at the middle and lower part of the tripod 1. A plurality of elastic claws are circumferentially arranged on the holder 13, and the plurality of claws are slidably inserted into the reinforcement rod 11 in a contracted state, and a receiver 14 for receiving the light source of the laser sensor 12 is provided at the installation ground position below the tripod 1.

[0038] When the tripod 1 is installed, the receiver 14 is synchronously installed on the working environment platform or the ground. When the monitor is performing three-dimensional displacement monitoring, the laser sensor 12 is started to work, and the change in the spatial position of the tripod 1 itself is judged by the change in the light source signal received by the receiver 14, thereby reducing the monitoring error of the monitor during operation and improving data accuracy.

[0039] Further, such as Figures 2 to 5 As shown, a plurality of vertical poles 6 are arranged in the middle of the tripod 1, and the vertical poles 6 are staggered with the legs of the tripod 1, and a slip ring 61 is installed on the upper ends of the plurality of vertical poles 6. The upper part of the tripod 1 passes through the middle cavity of the slip ring 61, and an atomizer ring 62 is rotatably installed at the outer contour position of the slip ring 61, and an atomizer 63 for humidity adjustment is fixedly installed on the atomizer ring 62.

[0040] By monitoring the temperature and humidity changes through the temperature and humidity sensor 40 and starting the atomizer 63 to work, the temperature and humidity values ​​of the working area of ​​the monitor can be adaptively adjusted to improve environmental adaptability.

[0041] Further, such as Figures 2 to 5 As shown, the atomizer 63 is located below the horizontal plane where the monitoring platform 5 is located, the inner ring surface of the atomizer ring 62 is provided with a gear ring 64, an atomizer motor 65 is fixedly installed on the slip ring 61, an atomizer gear 66 is fixedly installed on the output shaft of the atomizer motor 65, and the atomizer gear 66 is meshed with the gear ring 64, an atomizer flow channel connected to the output port of the atomizer 63 is provided on the inner side of the atomizer ring 62, and a plurality of atomizer rods 67 are evenly installed on the outer ring surface of the atomizer ring 62. 7 is connected with the atomizing flow channel, and atomizing holes are evenly opened on the atomizing rod 67. The atomizing rod 67 is arranged on the outer side of the atomizing ring 62 in an incomplete circular contour path. A plurality of atomizing rods 67 are interrupted and discontinuous on both sides of the atomizer 63. The atomizing rod 67 includes a horizontal portion and an inclined portion. The horizontal portion of the atomizing rod 67 is fixedly connected to the atomizing ring 62, and the inclined portion of the atomizing ring 62 extends obliquely away from the axis of the atomizing ring 62. The monitoring platform 5 is located on the inner side of the surrounding contour of the atomizing rod 67.

[0042] In order to improve the uniformity and stability of the temperature and humidity in the area monitored by the monitor, when the temperature and humidity adjustment operation is required, the atomizing motor 65 is started to work, and the atomizing gear 66 is driven to rotate by the atomizing motor 65, and then the atomizing ring 62 is driven to rotate through the meshing action between the atomizing gear 66 and the gear ring 64. At this time, the atomized droplets generated by the atomizer 63 are evenly dispersed into the atomizing rod 67 from the atomizing flow channel position inside the atomizing rod 67, and discharged outward from the atomizing hole on the atomizing rod 67. Along with the rotation of the atomizing ring 62, the atomizing rod 67 rotates synchronously, so that the overflowing atomized droplets are evenly dispersed to the spatial position where the monitor is located, and timely adaptive compensation is made for the temperature and humidity in the environment to meet the environmental factors requirements in the displacement monitoring process. At the same time, along with the rotation of the atomizing rod 67, the air flow in the area where the monitor is located can also be increased, further enhancing the area and adjustment efficiency of the temperature and humidity adjustment area.

[0043] Further, such as Figures 2 to 5 As shown, the inclined portion and the horizontal portion of the atomizing rod 67 are both provided with air guide plates 68 , the distance between two adjacent air guide plates 68 is discontinuous, and a plurality of air guide plates 68 are arranged obliquely in the shape of badminton feathers.

[0044] The air guide piece 68 can improve the light shielding property from the periphery of the monitor in a strong light environment, thereby reducing the light and heat intensity of the monitor area, and reducing the thermal expansion and contraction of the internal components of the monitor. At the same time, the air guide piece 68 is arranged obliquely in a badminton shape. During its circumferential rotation, the circumferential rotation direction of the air guide piece 68 can be synchronously adjusted by changing the running direction of the atomizing motor 65, thereby realizing the flow direction of the airflow during the rotation process. When the air guide piece 68 rotates forward, the airflow flows in from the bottom to the top from the gap between two adjacent air guide pieces 68. Conversely, when the air guide piece 68 rotates reversely, the airflow flows out from the top to the bottom from the gap between two adjacent air guide pieces 68. At this time, by controlling the flow direction of the airflow, the airflow exchange between the upper and lower spatial positions of the area where the monitor is located can be realized, thereby improving the uniformity of the temperature in the area where the monitor is located. When performing humidity adjustment operations, by controlling the flow direction of the airflow, the efficiency and control degree of the regional temperature and humidity adjustment process can be further improved, the accuracy of three-dimensional displacement data acquisition can be improved, and effective data support can be provided for subsequent image generation and identification.

[0045] The present invention also provides a three-dimensional displacement monitoring visualization system, which includes a high-speed dedicated lighting system and an image display and processing controller used in conjunction with a high-speed camera 2. The high-speed camera 2 continuously captures images in a short period of time, and tracks the displacement and strain of each pixel point within the field of view, establishes a 3D digital image, and performs three-dimensional displacement monitoring of the operating object.

[0046] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of the present invention is defined by the attached claims and their equivalents.

Claims

1. A three-dimensional displacement monitoring instrument, characterized in that: The invention comprises a tripod (1) and a high-speed camera (2), wherein the legs of the tripod (1) are of a telescopic structure, and the telescopic cavity of the legs of the tripod (1) is filled with an inert gas, and the high-speed camera (2) is arranged on the tripod (1). In addition, the invention also comprises A base (3), the base (3) being fixedly mounted on the upper part of the tripod (1) by means of an articulation, two sections of rods (4) being symmetrically mounted on both ends of the base (3) by means of an articulation, a monitoring platform (5) being fixedly mounted on the two sections of rods (4), and a high-speed camera (2) being mounted on the monitoring platform (5); A plurality of vertical rods (6) are arranged in the middle of the tripod (1); a slip ring (61) is commonly mounted on the upper ends of the plurality of vertical rods (6); an atomizer ring (62) is rotatably mounted on the outer contour of the slip ring (61); and an atomizer (63) is fixedly mounted on the atomizer ring (62); The inner ring surface of the atomizing ring (62) is provided with a gear ring (64), an atomizing motor (65) is fixedly mounted on the slip ring (61), an atomizing gear (66) is fixedly mounted on the output shaft of the atomizing motor (65), and the atomizing gear (66) is meshed with the gear ring (64), and a plurality of atomizing rods (67) are evenly mounted on the outer ring surface of the atomizing ring (62); The atomizing rod (67) is arranged on the outside of the atomizing ring (62) in an incomplete circular contour path, and an air guide sheet (68) is provided on the atomizing rod (67), and two adjacent air guide sheets (68) are discontinuous.

2. A three-dimensional displacement monitoring device according to claim 1, characterized in that: A compensation cylinder (51) is installed in the middle of the monitoring platform (5) by means of rotational fit, and the high-speed camera (2) is installed on the upper end of the compensation cylinder (51) by means of hinged connection.

3. A three-dimensional displacement monitoring device according to claim 2, characterized in that: A heating wire for temperature compensation in a low-temperature environment is arranged on the inner side of the compensation cylinder (51).

4. A three-dimensional displacement monitoring device according to claim 1, characterized in that: A shielding rod (54) is slidably mounted in the middle of the monitoring platform (5), the shielding rod (54) is located on one side of the high-speed camera (2), a backlight plate (55) is mounted on the upper end of the shielding rod (54) in a rotationally mating manner, and the backlight plate (55) is located above the high-speed camera (2).

5. A three-dimensional displacement monitoring device according to claim 1, characterized in that: A dust removal pipe (56) is movably installed in the middle of the monitoring platform (5), and the airflow outlet end of the dust removal pipe (56) is tilted and points toward the lens portion of the high-speed camera (2).

6. The three-dimensional displacement monitoring device according to claim 1, characterized in that: The plurality of legs of the tripod (1) are connected to a reinforcing support rod (11) in a hinged manner; a laser sensor (12) and a holder (13) for mounting the laser sensor (12) are provided at the middle and lower part of the tripod (1); the holder (13) is mounted on the reinforcing support rod (11); and a receiver (14) for receiving the light source of the laser sensor (12) is provided at a mounting ground position below the tripod (1).

7. A three-dimensional displacement monitoring visualization system, characterized in that: The monitoring visualization system includes a matching high-speed dedicated lighting system and an image display and processing controller, and the visualization system is used for the three-dimensional displacement monitoring instrument as described in any one of claims 1 to 6.

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