A dangerous rock body identification device based on infrared thermal imaging and laser vibration measurement

Abstract

This invention provides a dangerous rock mass identification device based on infrared thermal imaging and laser vibration measurement, including a data acquisition component, a dangerous rock mass identification module, a device shell, a power supply module, a control module, and a support structure. The device shell consists of an upper protective housing and a lower gimbal. The data acquisition component, dangerous rock mass identification module, velocity sensor, power supply module, and control module are installed inside the protective housing. The data acquisition component includes an optical lens, an infrared lens, and a laser vibration meter. The power supply module provides power to the data acquisition component, dangerous rock mass identification module, control module, and gimbal. This invention can achieve accurate identification of dangerous rock masses using multiple technologies and has waterproof and dustproof functions, thus solving the problems of existing instruments having limited functionality, low efficiency, and unsuitability for field scenarios.

Description

Technical Field

[0001] This utility model relates to the field of slope dangerous rock mass monitoring and early warning technology, specifically a dangerous rock mass identification device based on infrared thermal imaging and laser vibration measurement. Background Technology

[0002] Landslides, a common geological hazard affecting people's lives and property, are characterized by their wide distribution, high risk, and suddenness. Early identification of unstable rock masses and landslide monitoring and early warning have always been key aspects of geological disaster prevention and control. Rock mass control includes methods such as removal, reinforcement, interception, and monitoring, involving large-scale engineering projects and high costs. Stable rock masses often appear "dangerous but are actually safe," while truly dangerous rock masses are often overlooked. Therefore, rock mass identification is a prerequisite for rock mass remediation; accurately identifying potentially unstable rock masses is essential for efficient landslide prevention. Current methods for identifying unstable rock masses require manual on-site surveys and experience-based judgment, which are inefficient, inaccurate, and difficult to access in most areas. Therefore, developing a remote, rapid, and accurate method for identifying unstable rock masses is of great significance for rockfall prevention and control.

[0003] Water conservancy and hydropower projects are mostly located in mountainous areas, where the investigation of dangerous rock masses often covers a wide area with dense vegetation. For slopes in large-scale, highly vegetated areas, current traditional instruments are limited in function, inefficient, and have poor rain and dust protection, making them unsuitable for rapid investigation of dangerous rock masses on large-scale slopes in the field. There is a lack of a highly integrated dangerous rock mass identification device that can be used in field scenarios to search for dangerous rock mass occurrence areas and to qualitatively and quantitatively determine the stability of dangerous rock masses. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a dangerous rock mass identification device based on infrared thermal imaging and laser vibration measurement, which can use multiple technologies to achieve accurate identification of dangerous rock masses and has waterproof and dustproof functions, so as to solve the problems of existing instruments having single functions, low efficiency and unsuitability for field scenarios.

[0005] To solve the above-mentioned technical problems, the embodiments of this utility model provide the following technical solutions: A device for identifying unstable rock masses based on infrared thermal imaging and laser vibration measurement includes a data acquisition component, an unstable rock mass identification module, a device housing, a power supply module, a control module, and a support structure. The device housing is divided into an upper protective shell and a lower pan-tilt unit. The data acquisition component, unstable rock mass identification module, velocity sensor, power supply module, and control module are installed inside the protective shell. The data acquisition component includes an optical lens, an infrared lens, and a laser vibration meter. The power supply module provides power to the data acquisition component, unstable rock mass identification module, control module, and pan-tilt unit. Among them, the optical lens is used to capture high-definition optical images of the slope; the infrared lens is used to capture infrared images of the unstable rock formation; the laser vibrometer can collect the vibration time history curves of potential unstable rock masses; and the velocity sensor is installed inside the instrument to monitor the vibration time history curves of the instrument itself.

[0006] Preferably, the control module is a microcontroller.

[0007] Preferably, the dangerous rock mass identification module includes a DSP processor, a data storage chip, and an external interface, wherein the DSP processor is electrically connected to the data storage chip and the external interface.

[0008] Preferably, a flip cover is provided on the protective housing in front of the data acquisition component. When the flip cover is opened, it forms a rain shelter at a 90° angle with the side of the protective housing, and its length is adjustable.

[0009] Preferably, a heat dissipation grille is provided on the protective housing on the rear side of the data acquisition component.

[0010] Preferably, the gimbal has a structure that allows for 360° horizontal rotation and 60° vertical rotation.

[0011] Preferably, the support structure is connected to the gimbal by bolts.

[0012] Preferably, the support structure is a tripod.

[0013] The beneficial effects of the above-mentioned technical solution of this utility model are as follows: This invention can accurately identify dangerous rock masses using a variety of technologies and has waterproof and dustproof functions, thus solving the problems of existing instruments having limited functions, low efficiency, and being unsuitable for field scenarios. Attached Figure Description

[0014] Figure 1 This is a front view of a dangerous rock mass identification device based on infrared thermal imaging and laser vibration measurement according to an embodiment of the present invention; Figure 2 This is a schematic diagram of the data acquisition component structure of this utility model; Figure 3 This is a top view of the flip-top structure of the device according to an embodiment of the present invention; Figure 4 This is a diagram of the entire device after the flip cover of the device in an embodiment of this utility model is opened.

[0015] The diagram shows: 1-Data acquisition component, 2-Dangerous rock mass identification module, 3-Velocity sensor, 4-Power supply module, 5-Control module, 6-Pan-Tilt unit, 7-Heat dissipation grid, 8-Support structure, 9-Optical lens, 10-Infrared lens, 11-Laser vibrometer, 12-Flip cover, 13-Protective housing. Detailed Implementation

[0016] To make the technical problems, technical solutions and advantages of this utility model clearer, a detailed description will be given below in conjunction with the accompanying drawings and specific embodiments.

[0017] like Figure 1 As shown, this utility model proposes a dangerous rock mass identification device based on infrared thermal imaging and laser vibration measurement. The entire device is deployed within a 500m range from the slope to be measured and includes a data acquisition component 1, a dangerous rock mass identification module 2, a device shell, a power supply module 4, a control module 5, and a support structure 8. The device shell is divided into an upper protective shell 13 and a lower pan-tilt unit 6. The data acquisition component 1, the dangerous rock mass identification module 2, the velocity sensor 3, the power supply module 4, and the control module 5 are installed inside the protective shell 13. The power supply module 4 supplies power to the data acquisition component 1, the dangerous rock mass identification module 2, the control module 5, and the pan-tilt unit 6. The power supply module 4 includes a battery, which is located at the bottom inside the device shell. The data acquisition component 1 is located at the upper part of the shell, while the dangerous rock mass identification module 2, the power supply module 4, and the control module 5 are arranged parallel to each other at the bottom and separated from the data acquisition component 1 by a baffle.

[0018] like Figure 2 As shown, the data acquisition component 1 on the upper part of the unstable rock mass identification module 2 includes an optical lens 9, an infrared lens 10, and a laser vibrometer 11. The optical lens 9 is used to capture high-definition optical images of the slope; the infrared lens 10 is used to capture infrared images of the unstable rock mass occurrence area; and the laser vibrometer 11 can acquire the vibration time history curve of potential unstable rock masses. The three components, optical lens 9, infrared lens 10, and laser vibrometer 11, are activated sequentially to conduct slope inspections at different scales, from general surveys to detailed surveys to refined detection, ensuring the accuracy of unstable rock mass inspections. The unstable rock mass identification module 2 includes a DSP processor, a data storage chip, and an external interface. The DSP processor is electrically connected to the data storage chip and the external interface. The DSP processor processes signals (optical signals, infrared signal lights) related to rock mass identification. The data storage chip caches real-time acquired image / signal data. The external interface communicates with the data acquisition components (optical lens, infrared lens, laser vibrometer), the control module, and the velocity sensor, covering three types of interfaces: image, analog signal, and digital command.

[0019] Velocity sensor 3 is installed inside the instrument to monitor the instrument's own vibration time history curve. Velocity sensor 3 is bonded to the rear side of the protective housing 13 inside the device, ensuring that the monitored data represents the device's own vibration, and that the vibration acquisition direction is consistent with the laser vibration measurement direction. Laser vibrometer 11 acquires the vibration time history curve of the potential unstable rock mass, and the monitored data represents the relative vibration between the instrument and the rock mass. Velocity sensor 3 works in conjunction with laser vibrometer 11 to filter out the instrument's own vibration and obtain the true vibration time history curve of the unstable rock mass.

[0020] In this embodiment, the control module 5 is a microcontroller. It controls the lens focusing and shooting of the data acquisition component 1, and controls the gimbal 6 to achieve horizontal and vertical rotation of the device casing.

[0021] In this embodiment, a flip cover 12 is provided on the protective housing 13 in front of the data acquisition component 1. When the flip cover 12 is opened, it forms a rain shelter at a 90° angle with the side of the protective housing 13, and its length is adjustable. The top of the housing has a slot that matches the width of the flip cover, allowing the flip cover to be freely pushed and pulled to adjust its length. Figure 3 As shown. When the data acquisition component 1 is activated, open the flip cover 12 and lift it to a 90° angle with the side of the protective housing 13. The flip cover 12 has a gap, and the upper part of the housing has a groove 14 of the same size. Align the gap of the flip cover with the groove of the housing, and the rectangular fixing buckle passes through the gap. Figure 4 Insert the hinged cover 12 into the groove to secure it, ensuring normal operation of the instrument in low-intensity outdoor rainfall conditions. The complete device with the hinged cover 12 open is shown in the diagram below. Figure 4 As shown.

[0022] In this embodiment, a heat dissipation grille 7 is provided on the protective housing 13 behind the data acquisition component 1. The heat dissipation grille 7 is fin-shaped with the grille opening facing downwards, used for heat dissipation inside the housing and to prevent water ingress.

[0023] In this embodiment, the gimbal 6 has a structure that allows for 360° horizontal rotation and 60° vertical rotation, enabling the device to rotate horizontally and vertically for remote, multi-angle inspection of unstable rock masses.

[0024] In this embodiment, the support structure 8 is connected to the gimbal 6 by bolts. The support structure 8 is a tripod, and the preferred material for the tripod is stainless steel.

[0025] The working principle of this utility model is as follows: First, the protective shell 13 of the upper part of the rock mass detection device is fixed to the lower gimbal 6 with bolts. The gimbal 6 is then fixed to the support structure 8, and the device is deployed within a 500m range of the area to be investigated. Next, the flip cover 12 is opened and fixed horizontally. The optical lens 9 is activated to acquire optical images. The dangerous rock mass identification module 2 processes the optical images, delineating potential dangerous rock mass locations based on the RGB differences between vegetation-covered areas and exposed rock areas. Then, the infrared lens 10 is adjusted to capture infrared images of the delineated potential dangerous rock mass locations. Infrared images can remove some interference from sparse vegetation and distinguish between joints with lower temperatures and rock masses with higher temperatures, obtaining the dip angle and dip direction data of the joints to determine potentially unstable rock masses. Finally, the velocity sensor 3 and the laser vibration meter 11 are turned on to collect vibration time history curves of the unstable rock mass and the stable bedrock with potential instability risk, respectively. At the same time, the vibration time history curve of the device itself is collected. The data is processed by frequency domain filtering and differential processing to obtain the real vibration data of the rock mass. The time domain dynamic indexes of the bedrock and unstable rock are calculated, the relative differences of the indexes are compared, and the stability of the unstable rock mass is judged.

[0026] In this embodiment, a heat dissipation vent is provided on the rear side of the device housing for heat exchange between the device interior and the external environment. Furthermore, heat dissipation fins are arranged inside the housing to assist in heat dissipation and extend the device's service life.

[0027] The above description is the preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.

Claims

1. A device for identifying dangerous rock masses based on infrared thermal imaging and laser vibration measurement, characterized in that, The device includes a data acquisition component, a rock mass identification module, a device housing, a power supply module, a control module, and a support structure. The device housing consists of an upper protective shell and a lower gimbal. The data acquisition component, rock mass identification module, speed sensor, power supply module, and control module are installed inside the protective shell. The data acquisition component includes an optical lens, an infrared lens, and a laser vibrometer. The power supply module provides power to the data acquisition component, rock mass identification module, control module, and gimbal. Among them, the optical lens is used to capture high-definition optical images of the slope; the infrared lens is used to capture infrared images of the unstable rock formation; the laser vibrometer can collect the vibration time history curves of potential unstable rock masses; and the velocity sensor is installed inside the instrument to monitor the vibration time history curves of the instrument itself.

2. The dangerous rock mass identification device based on infrared thermal imaging and laser vibration measurement according to claim 1, characterized in that, The control module is a microcontroller.

3. The dangerous rock mass identification device based on infrared thermal imaging and laser vibration measurement according to claim 1, characterized in that, The dangerous rock mass identification module includes a DSP processor, a data storage chip, and an external interface. The DSP processor is electrically connected to the data storage chip and the external interface.

4. The dangerous rock mass identification device based on infrared thermal imaging and laser vibration measurement according to claim 1, characterized in that, A flip cover is provided on the protective housing in front of the data acquisition component. When the flip cover is opened, it forms a rain shelter at a 90° angle with the side of the protective housing, and its length is adjustable.

5. The dangerous rock mass identification device based on infrared thermal imaging and laser vibration measurement according to claim 1, characterized in that, A heat dissipation grille is provided on the protective housing behind the data acquisition component.

6. The dangerous rock mass identification device based on infrared thermal imaging and laser vibration measurement according to claim 1, characterized in that, The gimbal has a structure that allows for 360° horizontal rotation and 60° vertical rotation.

7. The dangerous rock mass identification device based on infrared thermal imaging and laser vibration measurement according to claim 1, characterized in that, The support structure is connected to the gimbal by bolts.

8. The dangerous rock mass identification device based on infrared thermal imaging and laser vibration measurement according to claim 7, characterized in that, The support structure is a tripod.

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