TBM rock slag catalog image automatic acquisition device based on high-speed camera shooting

Abstract

The utility model discloses a TBM rock slag catalog image automatic acquisition device based on high-speed camera shooting. The TBM rock slag catalog image automatic acquisition device comprises a TBM cutter head, a TBM slag discharging belt conveyor, a high-speed camera and a camera fixing support. A TBM cutterhead capable of achieving rotary cutting is installed at the end of the TBM deslagging belt conveyor, the camera fixing support is installed on the side, close to the TBM cutterhead, of the TBM deslagging belt conveyor, and the high-speed camera is installed on the camera fixing support, arranged above the starting end of the TBM deslagging belt conveyor and used for collecting orthoimages of rock slag on the TBM deslagging belt conveyor in real time. Rock slag image data are collected in real time through the high-speed camera, manual intervention is not needed, the data collecting and processing time is greatly shortened, meanwhile, the device can work continuously, the idle time of manual operation is effectively shortened, massive training samples are accumulated for rock slag image recognition and geological analysis, the precision of a machine learning model is improved, and the working efficiency is improved. And intelligence and automation of geological logging of the rock slag are promoted.

Description

Technical Field

[0001] This utility model belongs to the field of TBM rock debris recording technology, specifically relating to an automatic image acquisition device for TBM rock debris recording based on high-speed cameras. Background Technology

[0002] Rock debris, as a direct product of TBM rock breaking during tunneling, contains rich geological information. Geological logging of rock debris at different tunnel stations is crucial for understanding the geological conditions of the tunneling process. This is especially true for shield tunneling, where the surrounding rock is obscured by the cutterhead and shield. As with drill-and-blast excavation, geological personnel cannot comprehensively, intuitively, and in detail observe and record engineering geological phenomena and information such as lithological changes, weathering degree, structural features and development, and groundwater exposure and flow rate as they can with drill-and-blast methods. Therefore, fully extracting the geological information from the rock debris is particularly critical. To conduct a comprehensive study of the debris samples, it is essential to first obtain images of the rock debris at each tunnel station. During TBM tunneling, rock debris is transported to an external stockpile via high-speed conveyor belts and mixed and piled up. This stockpile, being an aggregate of rock debris from a certain length of tunnel section, cannot accurately reflect the geological information of a specific station. Furthermore, excessive height or unevenness of the stockpile can lead to significant differences in geological features reflected in images of the same debris from different angles and ranges. Acquiring images of rock debris from conveyor belts also faces various challenges, including the high speed of the conveyor belts, the difficulty in capturing clear images, and the low efficiency of manual acquisition. Therefore, developing a device to automate the batch acquisition of TBM rock debris logging images, while ensuring the resolution and clarity of the acquired images, and combining this with TBM tunneling information to obtain rock debris logging images for all stations along the entire tunnel section, has significant practical value. Utility Model Content

[0003] In view of the problems existing in the prior art, this utility model provides an automatic image acquisition device for TBM rock debris logging based on a high-speed camera. A high-speed camera installed above the TBM muck conveyor belt acquires real-time orthophotos of the rock debris on the belt conveyor. Through a control module, data processing module, and information matching module, the device automatically matches the image time information with the real-time tunneling station number, and finally stores the rock debris image data containing the station number information, thus realizing the automated acquisition of geological logging images of tunnel rock debris.

[0004] To solve the above problems, the technical solution provided by this utility model is as follows:

[0005] This utility model embodiment provides an automatic image acquisition device for TBM rock slag recording based on high-speed camera, including TBM cutter head (1), TBM slag conveyor belt (2), high-speed camera (3) and camera fixing bracket (4); the end of the TBM slag conveyor belt (2) is equipped with a rotatable cutting TBM cutter head (1), the camera fixing bracket (4) is installed on the side of the TBM slag conveyor belt (2) near the TBM cutter head (1), the high-speed camera (3) is installed on the camera fixing bracket (4), and the high-speed camera (3) is set above the starting end of the TBM slag conveyor belt (2) for real-time acquisition of orthophotos of rock slag on the TBM slag conveyor belt (2).

[0006] A preferred embodiment of this utility model further includes a control module, a data processing module, an information matching module, a storage module, and a TBM tunneling station information system. The high-speed camera (3) is installed above the starting end of the TBM's muck conveyor belt and is used to collect orthophotos of rock debris on the TBM's muck conveyor belt (2) in real time. The control module is connected to the high-speed camera (3) via a signal and is used to control the shooting frequency of the high-speed camera (3) and store image data. The data processing module extracts the timestamp of the image and is connected to the control module via a signal. It is used to process image data and extract time information. The information matching module is connected to the data processing module and the TBM tunneling station information system via a signal and is used to match the corresponding station information according to the time information. The storage module is used to store rock debris images containing station information.

[0007] In a preferred embodiment of this utility model, the control module further includes an image quality detection unit, which is used to monitor the sharpness and exposure effect of the acquired image in real time, and automatically adjust the shooting parameters of the high-speed camera when necessary.

[0008] In a preferred embodiment of this utility model, the information matching module includes a time synchronization unit, which is used to calibrate the time information of the high-speed camera with the tunneling stationing system of the TBM to ensure the accuracy of stationing matching.

[0009] In a preferred embodiment of this utility model, the storage module further includes a data backup unit for redundant storage of the collected rock debris image data to prevent data loss.

[0010] Compared with existing technologies, this utility model provides an automatic image acquisition device for TBM rock debris recording based on high-speed cameras, which has the following beneficial effects:

[0011] (1) Improved work efficiency: Real-time acquisition of rock debris image data via high-speed camera eliminates the need for manual intervention, greatly reducing data acquisition and processing time. Furthermore, the device can operate continuously, effectively reducing idle time for manual operation.

[0012] (2) Improved data accuracy: The equipment uses a high-resolution high-speed camera to collect images and combines them with the automatic matching of time and station number information to ensure the accuracy of the data and reduce errors that may be caused by human operation.

[0013] (3) Enhanced safety: It avoids the need for people to approach the high-speed belt conveyor to take pictures or observe, reducing the safety risks at the construction site, especially in complex or dangerous tunnel construction environments.

[0014] (4) Data traceability: The image data stored in the system corresponds one-to-one with the station information, providing a clear basis for subsequent geological analysis and verification of tunneling records, which greatly enhances the traceability and reliability of the data.

[0015] (5) High adaptability: The high-speed camera and control module have good adjustability and can adjust parameters according to different tunneling conditions and belt conveyor characteristics to ensure stable operation under various construction conditions.

[0016] (6) Accumulating massive amounts of data for rock debris image recognition: By continuously and automatically acquiring rock debris images through high-speed cameras, the system can generate a large number of high-quality rock debris image datasets. These data provide rich training samples for subsequent rock debris image recognition, classification, and geological analysis, which helps to improve the accuracy and reliability of machine learning models and promotes the intelligent and automated development of rock debris geological logging. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of an automatic image acquisition device for TBM rock debris recording based on high-speed camera, provided in an embodiment of this application.

[0019] Figure 2 This is a diagram illustrating the final exported rock debris logging image provided in the embodiments of this application.

[0020] Attached reference numerals: 1. TBM cutterhead; 2. TBM slag discharge conveyor belt; 3. High-speed camera; 4. Camera mounting bracket. Detailed Implementation

[0021] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application. The terms "upper," "lower," "front," "rear," "left," and "right," etc., used when describing the installation position or direction of the structure or components in this embodiment are based on the orientation shown in the accompanying drawings. They are merely for convenience of description, used to distinguish the relative positions of various components or directions, and do not represent the orientation of the device or functional component in this embodiment during use.

[0022] like Figure 1 As shown, this utility model embodiment provides an automatic image acquisition device for TBM rock debris recording based on a high-speed camera, including a TBM cutterhead 1, a TBM slag discharge conveyor 2, a high-speed camera 3, and a camera mounting bracket 4. A rotatable cutting TBM cutterhead 1 is installed at the end of the TBM slag discharge conveyor 2. The camera mounting bracket 4 is installed on the side of the TBM slag discharge conveyor 2 near the TBM cutterhead 1. The high-speed camera 3 is mounted on the camera mounting bracket 4 and positioned above the starting end of the TBM slag discharge conveyor 2 for real-time acquisition of orthophotos of the rock debris on the TBM slag discharge conveyor 2. The camera mounting bracket 4 has an adjustable angle mounting structure, enabling precise alignment according to the height and width of the TBM slag discharge conveyor 2 to ensure image orthophoto accuracy.

[0023] An automatic image acquisition device for TBM rock debris recording based on high-speed cameras also includes a control module, a data processing module, an information matching module, a storage module, and a TBM tunneling station information system. The high-speed camera 3 is positioned above the starting end of the TBM's muck discharge conveyor belt 2 to acquire orthophotos of the rock debris on the conveyor belt in real time. The high-speed camera 3 has high frame rate and high resolution performance, capable of adapting to the high-speed operation of the conveyor belt. The control module is connected to the high-speed camera 3 via a signal connection and is used to control the shooting frequency and store image data of the high-speed camera 3. In this embodiment, the control module is connected to the high-speed camera 3 to control the working status of the high-speed camera, including starting, stopping, adjusting the shooting frequency, shutter speed, and exposure time to ensure the stability and clarity of image acquisition.

[0024] The data processing module extracts the timestamps from the images. Connected to the control module via signals, it receives image data from a high-speed camera and extracts the time information of the captured images. The information matching module, connected to the data processing module and the TBM's tunneling station information system via signals, matches corresponding station information based on the time information. The storage module stores rock debris images containing station information, and also stores orthophoto data of rock debris containing station information, facilitating subsequent geological logging and analysis. Figure 2 .

[0025] The control module also includes an image quality detection unit, used to monitor the sharpness and exposure of acquired images in real time, and automatically adjust the shooting parameters of the high-speed camera when necessary. The information matching module includes a time synchronization unit, used to calibrate the time information of the high-speed camera with the TBM's tunneling stationing system to ensure accurate stationing matching. The storage module also includes a data backup unit, used to redundantly store the acquired rock debris image data to prevent data loss.

[0026] like Figure 1 and Figure 2 As shown, this utility model also provides a method for digital logging of borehole cores based on image recognition, including the following steps:

[0027] Step 1, Equipment Installation: Select a suitable location above the TBM muck conveyor belt and install a high-speed camera, ensuring it is directly facing the center of the TBM muck conveyor belt. Adjust the camera's height and angle to ensure orthogonal image acquisition. Connect the control module to the camera and simultaneously connect it to the TBM tunneling station information system.

[0028] Step 2, Device Initialization: Start the control module and set the camera's operating parameters, including frame rate, resolution, and exposure time. Conduct a trial run using the control module's test mode, acquiring several test images to check image quality. Calibrate the camera's timestamp to ensure synchronization with the stationing system time.

[0029] Step 3, Image Acquisition: During the TBM's initial tunneling process, cameras are simultaneously activated to acquire real-time images of rock debris on the TBM's muck conveyor at a set frequency. The control module dynamically adjusts the camera's acquisition frequency based on the speed of the TBM's muck conveyor and the rock debris transport situation. The data processing module performs preliminary compression and format conversion on the acquired images to ensure efficient storage.

[0030] Step 4, Time Information Extraction: The data processing module extracts the timestamp from each image frame and stores it in a standard time format. Time information is embedded in the image data to facilitate subsequent station number matching.

[0031] Step 5, Station Number Matching: The information matching module receives image time information and obtains real-time station number data from the tunneling station number system. Based on the synchronization relationship between timestamps and station number information, it matches the station number corresponding to each image. The matching results are verified to ensure the accuracy of station number association.

[0032] Step 6, Data Storage: Store the matched image data and stationing information to the storage module. Enable the data backup unit for redundant storage of important data. Regularly check the status of the storage device to ensure data integrity and security.

[0033] Step 7, Data Export: Batch edit the large number of stored rock debris images, add text above the images indicating the tunnel name and corresponding station number, and finally export the edited images to the computer.

[0034] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An automatic image acquisition device for TBM rock debris recording based on high-speed cameras, characterized in that, It includes a TBM cutterhead (1), a TBM slag conveyor belt (2), a high-speed camera (3), and a camera mounting bracket (4); the TBM slag conveyor belt (2) is equipped with a rotatable cutting TBM cutterhead (1) at its end, the camera mounting bracket (4) is installed on the side of the TBM slag conveyor belt (2) near the TBM cutterhead (1), the high-speed camera (3) is installed on the camera mounting bracket (4), and the high-speed camera (3) is set above the starting end of the TBM slag conveyor belt (2) for real-time acquisition of orthophotos of rock slag on the TBM slag conveyor belt (2).

2. The automatic image acquisition device for TBM rock debris recording based on high-speed camera according to claim 1, characterized in that, It also includes a control module, a data processing module, an information matching module, a storage module, and a TBM tunneling station information system. The high-speed camera (3) is set above the starting end of the TBM's muck conveyor belt and is used to collect orthophotos of rock debris on the TBM's muck conveyor belt (2) in real time. The control module is connected to the high-speed camera (3) via a signal and is used to control the shooting frequency of the high-speed camera (3) and store image data. The data processing module extracts the timestamp of the image and is connected to the control module via a signal. It is used to process image data and extract time information. The information matching module is connected to the data processing module and the TBM tunneling station information system via a signal and is used to match the corresponding station information according to the time information. The storage module is used to store rock debris images containing station information.

3. The automatic image acquisition device for TBM rock debris recording based on high-speed camera according to claim 2, characterized in that, The control module also includes an image quality detection unit, which is used to monitor the sharpness and exposure effect of the acquired images in real time and automatically adjust the shooting parameters of the high-speed camera when necessary.

4. The automatic image acquisition device for TBM rock debris recording based on high-speed camera according to claim 2, characterized in that, The information matching module includes a time synchronization unit, which is used to calibrate the time information of the high-speed camera with the tunneling stationing system of the TBM to ensure the accuracy of stationing matching.

5. The automatic image acquisition device for TBM rock debris recording based on high-speed camera according to claim 2, characterized in that, The storage module also includes a data backup unit for redundant storage of the collected rock debris image data to prevent data loss.

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