1. The utility model provides a fixed point formula steel box girder crack development observation device which characterized in that includes:

the mounting auxiliary assembly (1) is detachably mounted at a specific position on the steel box girder;

the frame body component (2) is connected to the installation auxiliary component (1);

the image acquisition module (3) is arranged on the frame body component (2) and is matched with the specific posture adjustment of the frame body component (2) to realize the image acquisition of a target monitoring position;

the data processing module is arranged on the steel box girder and is electrically connected with one or more image acquisition modules (3), the data processing module extracts crack characteristics of time-sequence image information of cracks of the steel box girder, which is acquired by the image acquisition modules (3), and builds a time-sequence crack development data set and early warning information based on the extracted crack characteristics, and the data processing module is in wireless communication connection with an external user side so as to realize signal transmission of the crack development data set and the early warning information.

2. The fixed-point steel box girder crack development observation device according to claim 1, wherein the image acquisition module (3) comprises an industrial camera (31) and a light emitting unit (32), and the light emitting unit (32) is circumferentially arranged around the industrial camera (31) to form a uniform circumferential illumination assistance.

3. The fixed-point steel box girder crack growth observation device according to claim 2, wherein the image acquisition accuracy of the industrial camera (31) is equal to or greater than 0.01 mm.

4. The fixed-point steel box girder crack growth observation device according to claim 1, wherein the installation auxiliary assembly (1) comprises an installation auxiliary housing (11) and a magnet (12), one side of the installation auxiliary housing (11) is connected with the frame assembly (2), the other side of the installation auxiliary housing is connected with the magnet (12), and the magnet (12) is attached to a specific position on the steel box girder.

5. The fixed-point steel box girder crack development observation device according to claim 1, wherein the frame body assembly (2) is of a link structure and comprises a plurality of link units (21) connected with each other, and an included angle between adjacent link units (21) can be adjusted, so that the extension state of the frame body assembly (2) can be adjusted, and the image acquisition posture adjustment of the image acquisition module (3) can be realized.

6. The fixed-point steel box girder crack development observation device according to claim 5, wherein adjacent link units (21) are hinged to each other, and an included angle adjusting unit is provided between the adjacent link units (21), and the included angle adjusting unit is an electric cylinder type adjusting unit or a gear type adjusting unit.

7. The fixed-point steel box girder crack growth observation device according to claim 6, wherein the cylinder type adjusting unit is provided on the current link unit (21), and the output end of the cylinder type adjusting unit is connected to the previous or subsequent link unit (21), thereby realizing the adjustment of the included angle between the adjacent link units (21).

8. The fixed-point steel box girder crack development observation device according to claim 6, wherein the gear type adjusting unit comprises a first gear provided on the current link unit (21), a second gear provided on the previous or subsequent link unit (21), and a servo motor in transmission connection with the first gear, the first gear is engaged with the second gear, and the adjustment of the included angle between the adjacent link units (21) is realized by driving the first gear through the servo motor.

9. The fixed-point steel box girder crack growth observation device according to claim 1, wherein the crack characteristics include crack length, crack width and crack inclination angle.

10. The fixed-point steel box girder crack development observation device according to claim 1, wherein the data processing module comprises a microprocessor, and further comprises a RAM, a ROM and a wireless signal transceiver electrically connected with the microprocessor through a bus.

Background

The large-span bridge steel box girder has the characteristics of high strength and good stability, can be widely applied to road and bridge construction in recent years, and is also the main section form in bridge engineering in China at present. However, in the process of increasing transportation demand, more and more overloaded vehicles have serious influence on the application effect of the steel box girder, and the fatigue crack problem is the most serious. If the bridge is not detected and repaired in time, the normal operation of the bridge is influenced, and the bridge collapse accident can be caused.

Therefore, the importance of the bridge crack detection technology is more obvious, and sufficient attention needs to be paid to the crack development condition at important positions. The current detection aiming at fatigue cracks is roughly divided into 2 types of nondestructive detection and destructive detection. In nondestructive testing, the most common ultrasonic flaw detection method has the defects of manpower and financial resources waste, high door entry difficulty, small flexibility, low relative precision and the like, and cannot be applied to fixed-point and long-term crack development observation of the steel box girder.

CN208282727U discloses a measuring tool for measuring cracks in steel box girders, comprising: the device comprises a measuring device, a first locking device, a second locking device and a limiting device. The two end measuring scales are hinged, so that the crack length can be measured quickly and visually according to the crack rotating angle, and the working efficiency is improved; the magnet temporary fixing measuring device is utilized, observation and recording are facilitated, and manpower and material resources are saved. According to the technical scheme, the crack development observation of the steel box girder is difficult to realize by adopting a manual measurement mode.

Disclosure of Invention

The invention aims to overcome the defects in the prior art and provide the fixed-point steel box girder crack development observation device, a new idea of fixed-point steel box girder crack development observation is conceived based on a visual technology, crack monitoring of a region difficult to observe on a steel box girder in the prior art is solved, and observation precision is improved.

The purpose of the invention can be realized by the following technical scheme:

the invention aims to protect a fixed-point steel box girder crack development observation device, which comprises an installation auxiliary assembly, a frame body assembly, an image acquisition module and a data processing module, wherein the fixed-point steel box girder crack development observation device specifically comprises:

the mounting auxiliary assembly is detachably mounted at a specific position on the steel box girder;

the frame body assembly is connected to the installation auxiliary assembly;

the image acquisition module is arranged on the frame body assembly and is matched with the specific posture adjustment of the frame body assembly to realize the image acquisition of a target monitoring position;

the data processing module is arranged on the steel box girder and is electrically connected with one or more image acquisition modules, the data processing module extracts crack characteristics of time-series image information of cracks of the steel box girder acquired by the image acquisition modules, and constructs time-series crack development data sets and early warning information based on the extracted crack characteristics, and the data processing module is in wireless communication connection with an external user side so as to realize signal transmission of the crack development data sets and the early warning information.

Furthermore, the image acquisition module comprises an industrial camera and a light-emitting unit, wherein the light-emitting unit is arranged around the industrial camera in a surrounding mode to form uniform surrounding type illumination assistance.

Further, the image acquisition precision of the industrial camera is greater than or equal to 0.01 mm.

Further, the installation auxiliary assembly comprises an installation auxiliary shell and a magnet, one side of the installation auxiliary shell is connected with the frame body assembly, the other side of the installation auxiliary shell is connected with the magnet, and the magnet is adsorbed at a specific position on the steel box girder.

Further, the support body assembly is of a connecting rod type structure and comprises a plurality of connecting rod units which are connected with each other, and included angles between the adjacent connecting rod units can be adjusted, so that the extension state of the support body assembly is adjusted, and the image acquisition posture adjustment of the image acquisition module is realized.

Furthermore, the adjacent connecting rod units are hinged, an included angle adjusting unit is arranged between the adjacent connecting rod units, and the included angle adjusting unit is an electric cylinder type adjusting unit or a gear type adjusting unit.

Furthermore, the electric cylinder type adjusting unit is arranged on the current connecting rod unit, and the output end of the electric cylinder type adjusting unit is connected to the front or rear connecting rod unit, so that the included angle between the adjacent connecting rod units can be adjusted.

Further, the electric cylinder type adjusting unit is a servo electric cylinder.

Furthermore, the gear type adjusting unit comprises a first gear arranged on the current connecting rod unit, a second gear arranged on the previous or the next connecting rod unit and a servo motor in transmission connection with the first gear, wherein the first gear is meshed with the second gear, and the adjustment of the included angle between the adjacent connecting rod units is realized by driving the first gear through the servo motor.

Further, the crack characteristics include crack length, crack width, crack inclination angle.

Furthermore, the data processing module comprises a microprocessor, and further comprises a RAM, a ROM and a wireless signal transceiver which are electrically connected with the microprocessor through a bus.

Further, the microprocessor is an ARM architecture processor or an x86 architecture processor.

Further, the microprocessor is electrically connected with the servo electric cylinder and the servo motor.

Compared with the prior art, the invention has the following technical advantages:

1. fixed point type steel box girder crackle development observation device among this technical scheme can be through normally working in the dark surrounds from taking the light source, and the accessible adjustment support body subassembly position adapts to any observation position, the precision that adopts the high accuracy camera can reach 0.01mm and above precision theoretically, the crack image that the camera was gathered passes through the data processing module of USB line transmission to the box girder inside, carry out real-time data calculation through the treater, and can be with crack development condition will be transmitted to the user end by wireless network, the task of automatic real-time analysis calculation crack development condition under the dark surrounds has been realized, manpower and materials have been saved greatly, can play important role in future steel box girder health monitoring.

2. The output end of the included angle adjusting unit in the technical scheme is connected to the front or rear connecting rod unit, so that the included angle between the adjacent connecting rod units is adjusted, the included angle adjusting units are all servo-controlled, the optimal shooting precision of the industrial camera is realized by adjusting and matching the included angle between the connecting rod units through the microprocessor, and the characteristic of steel box girder cracks is reflected to the maximum extent.

Drawings

Fig. 1 is a schematic structural view of a fixed-point steel box girder crack development observation device in the technical scheme;

fig. 2 is another angle structure diagram of the fixed-point steel box girder crack development observation device in the technical scheme;

fig. 3 is a schematic view of the overall concept of the present solution.

In the figure: 1. installation auxiliary assembly, 2, support body subassembly, 3, image acquisition module, 21, link unit, 31, industry camera, 32, luminescence unit.

Detailed Description

The invention is described in detail below with reference to the figures and specific embodiments.

Example 1

The fixed-point steel box girder crack development observation device in the embodiment comprises an installation auxiliary assembly 1, a frame body assembly 2, an image acquisition module 3, a data processing module and a matched mobile power supply or fixed wiring power supply, and is shown in fig. 1 and 2.

The installation auxiliary assembly 1 is detachable installs the specific position on the steel box girder, and installation auxiliary assembly 1 is including installation auxiliary housing 11 and magnet 12, one side and the support body subassembly 2 of installation auxiliary housing 11 are connected, the opposite side with magnet 12 is connected, magnet 12 adsorbs the specific position on the steel box girder. During specific implementation, the auxiliary assembly 1 can enable the steel box girder crack development observation device to be inverted on the lower surface of the steel box girder or to be laterally erected on the surface of a steel box girder web, and all-weather observation of a specific site which cannot be achieved by a conventional observation means is realized.

The holder assembly 2 in this embodiment is connected to the installation assisting assembly 1. Support body subassembly 2 is the connecting rod formula structure, including a plurality of connecting rod units 21 of interconnect, and the contained angle between adjacent connecting rod unit 21 can be adjusted to this extension state of adjusting support body subassembly 2 realizes that the image acquisition gesture of image acquisition module 3 is adjusted. The adjacent connecting rod units 21 are hinged, and an included angle adjusting unit is arranged between the adjacent connecting rod units 21 and is an electric cylinder type adjusting unit. The electric cylinder type adjusting unit is arranged on the current connecting rod unit 21, and the output end of the electric cylinder type adjusting unit is connected to the previous or next connecting rod unit 21, so that the included angle between the adjacent connecting rod units 21 is adjusted. The electric cylinder type adjusting unit is a servo electric cylinder, the optimal shooting precision of the industrial camera 31 is realized through the adjustment and matching of the microprocessor to the included angle between the connecting rod units 21, and the characteristic of steel box girder cracks is reflected to the maximum extent. In specific implementation, the connecting rod unit 21 may be formed by a light high-strength linear array hole, which is formed by a rod body made of carbon fiber material and provided with linear array holes.

On image acquisition module 3 located support body subassembly 2 in this embodiment, the specific gesture adjustment of cooperation support body subassembly 2 realizes the image acquisition of target monitoring position. The image acquisition module 3 comprises an industrial camera 31 and a light-emitting unit 32, wherein the light-emitting unit 32 is arranged around the industrial camera 31 in a surrounding manner to form uniform peripheral illumination assistance. The image acquisition accuracy of the industrial camera 31 is 0.01mm or more. In specific implementation, the light emitting unit 32 is a light emitting LED annular array capable of stepless dimming, and the brightness is adaptively adjusted by a microprocessor based on the optimal vision acquisition precision.

The data processing module in this embodiment is disposed on the steel box girder and is electrically connected to one or more of the image acquisition modules 3, the data processing module extracts crack characteristics from time-series image information of cracks of the steel box girder acquired by the image acquisition modules 3, and constructs a time-series crack development data set and early warning information based on the extracted crack characteristics, and the data processing module is in wireless communication connection with an external user side, so as to realize signal transmission of the crack development data set and the early warning information.

Crack characteristics referred to in this embodiment include crack length, crack width, and crack inclination angle. The data processing module in the embodiment comprises a microprocessor, and further comprises a RAM, a ROM and a wireless signal transceiver which are electrically connected with the microprocessor through a bus. The microprocessor in this embodiment is an ARM architecture processor or an x86 architecture processor. The microprocessor is electrically connected with the servo electric cylinder, so that the adjustment of the included angle between the connecting rod units 21 can be realized, the optimal shooting precision of the industrial camera 31 is realized through the adjustment and matching of the microprocessor to the included angle between the connecting rod units 21, and the characteristic of the crack of the steel box girder is embodied to the maximum extent.

In the process of observing the crack development of the fixed-point steel box girder, the concept schematic diagram can be simply referred to as fig. 3, and the method comprises the following steps of:

the fixed-point steel box girder crack development observation device is arranged at a specific position on the steel box girder, and time-sequence image information of the steel box girder crack is obtained;

and the time-series image information of the cracks of the steel box girder, which is acquired by the image acquisition module 3, is subjected to crack feature extraction through the data processing module, and a time-series crack development data set and early warning information are established based on the extracted crack features. Specifically, information such as the length, the width, the inclination angle of the crack is calculated through processing technologies such as an image correction algorithm, image binarization, dynamic feature point capture and the like in the prior art, a crack development data set of the specific observation region is constructed according to the time sequence information in a classified manner, a plurality of development curves can be generated according to the classification, and then the development curves are sent to an external user side in a wireless communication manner.

Aiming at the crack development information, an external user side carries out technical analysis such as machine learning, deep learning and the like to evaluate the crack development rule based on a GPU, an existing database and an existing AI algorithm, so that the overall safety condition of the bridge is monitored, the possible danger early warning is given, and the autonomous perception type operation maintenance is finally realized.

Example 2

Different from the electric cylinder type adjusting unit in embodiment 1, a gear type adjusting unit is adopted in this embodiment, and the gear type adjusting unit includes a first gear disposed on the current link unit 21, a second gear disposed on the previous or subsequent link unit 21, and a servo motor in transmission connection with the first gear, the first gear is engaged with the second gear, and the adjustment of the included angle between the adjacent link units 21 is realized by driving the first gear through the servo motor. The microprocessor is an ARM (advanced RISC machine) architecture processor or an x86 architecture processor, servo motors of the microprocessor are electrically connected, the adjustment of the included angle between the connecting rod units 21 can be realized, the optimal shooting precision of the industrial camera 31 is realized by the adjustment and matching of the microprocessor to the included angle between the connecting rod units 21, and the characteristic of steel box girder cracks is reflected to the maximum extent.

The embodiments described above are described to facilitate an understanding and use of the invention by those skilled in the art. It will be readily apparent to those skilled in the art that various modifications to these embodiments may be made, and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present invention is not limited to the above embodiments, and those skilled in the art should make improvements and modifications within the scope of the present invention based on the disclosure of the present invention.