A vehicle-mounted mobile measuring device for strip line inspection

Abstract

This utility model relates to a vehicle-mounted mobile measurement device for strip line inspection, comprising a housing, a panoramic camera, and a cross-sectional laser scanner. The panoramic camera is mounted on the top of the housing, and the cross-sectional laser scanner is embedded in the side. The housing is assembled from an integrated aluminum frame, a top plate, and a bottom plate. The integrated aluminum frame is seamlessly connected by four side walls and a transverse vibration isolation layer. The cross-sectional laser scanner is mounted on the transverse vibration isolation layer, and an inertial measurement unit and a circuit board assembly are mounted on the bottom plate below the transverse vibration isolation layer. The housing is equipped with a heat dissipation structure capable of forming convection. This utility model, through its integrated structural design, combines the advantages of high rigidity, strong vibration isolation, and efficient heat dissipation, significantly improving the accuracy and reliability of vehicle-mounted mobile measurement in strip line inspection tasks. It provides an ideal platform for long-term, long-distance field vehicle-mounted mobile measurement, improving operational efficiency and overall data quality.

Description

Technical Field

[0001] This utility model belongs to the technical field of vehicle-mounted mobile measuring devices, and specifically relates to a vehicle-mounted mobile measuring device for strip line detection. Background Technology

[0002] In the fields of transportation, power, and communications, rapid and accurate detection and measurement of linear infrastructure such as railways, highways, tunnels, and power transmission lines are crucial for ensuring their safe operation and maintenance. Vehicle-mounted mobile measurement technology, as an efficient solution, integrates various high-precision sensors, such as inertial navigation systems, laser scanners, and panoramic cameras, onto a mobile platform, enabling the rapid acquisition of geospatial information along the route.

[0003] However, existing vehicle-mounted mobile measurement devices still face several prominent technical challenges in practical applications. First, mutual interference easily occurs between the core sensors within the device. In particular, the high-speed rotation of the cross-sectional laser scanner lens generates significant high-frequency vibrations during operation. These vibrations are transmitted through the device structure to the highly vibration-sensitive inertial measurement unit, introducing severe measurement noise and reducing the positioning and attitude accuracy of the inertial navigation system, ultimately affecting the overall data accuracy. Second, the device faces severe structural stability and heat dissipation issues during long-term operation in a vehicle environment. Traditional frame structures are prone to deformation under the continuous vibration and impact of vehicle movement, affecting the mounting reference and relative position of each sensor. Simultaneously, the device integrates multiple heat-generating units such as an industrial control computer and a laser scanner, resulting in significant heat accumulation in the enclosed space. Insufficient heat dissipation efficiency leads to excessively high operating temperatures for components, accelerating equipment aging and causing sensor measurement drift, severely limiting the device's ability to operate continuously and stably for extended periods.

[0004] Currently, related devices typically employ simple layered layouts and additional damping pads to attempt to alleviate vibration and heat dissipation problems, but the effects are limited. These methods struggle to fundamentally achieve efficient vibration isolation and often sacrifice the overall structural rigidity or heat dissipation efficiency, creating a contradiction between vibration suppression, structural stability, and efficient heat dissipation.

[0005] Therefore, there is an urgent need for an innovative integrated structural design that can simultaneously meet the stringent requirements of high rigidity, strong vibration isolation, and efficient heat dissipation, thereby providing a stable and reliable working environment for high-precision sensors and ensuring that the vehicle-mounted mobile measurement system can still acquire accurate and reliable measurement data under complex working conditions. Utility Model Content

[0006] This utility model provides a vehicle-mounted mobile measuring device for strip line detection to solve the technical problems existing in the prior art. It solves the problems of large vibration interference, poor heat dissipation and insufficient structural stability in the prior art. It has the characteristics of integrating three major functions: high rigidity, efficient vibration isolation and active heat dissipation.

[0007] This utility model includes the following technical solution: a vehicle-mounted mobile measuring device for strip line detection, comprising a housing, a panoramic camera, and a cross-sectional laser scanner; the panoramic camera is mounted on the top of the housing, and the cross-sectional laser scanner is embedded in the side; the housing is assembled from an integrated aluminum keel, a top plate, and a bottom plate, the integrated aluminum keel being seamlessly connected by four side walls and a transverse vibration isolation layer; the cross-sectional laser scanner is mounted on the transverse vibration isolation layer, and an inertial measurement unit and a circuit board assembly are mounted on the bottom plate below the transverse vibration isolation layer; the housing is provided with a heat dissipation structure capable of forming convection. When the cross-sectional laser scanner is working, the lens rotates at a speed of 200 rpm, generating high-frequency vibration noise that increases inertial navigation measurement errors; therefore, it is placed in the upper space. Other components are installed in a planar distribution structure on the bottom layer, ensuring efficient heat dissipation while facilitating subsequent maintenance and repair.

[0008] Furthermore, the top plate and bottom plate are fastened to the integrated aluminum keel with 18 M3 screws respectively, forming an outer shell that serves as a load-bearing structure.

[0009] Furthermore, the integrated aluminum keel is formed by rotary drilling from the top and bottom surfaces of a single aluminum ingot to create two layers of installation space. The sidewalls are seamlessly formed without screws, which can avoid structural deformation caused by long-term vibration and enhance the overall strength and stability of the load-bearing structure. A transverse vibration isolation layer is retained in the middle of the aluminum ingot, which can suppress the impact of high-frequency vibration during the high-speed rotation of the cross-section laser scanner lens on the deformation of the load-bearing structure.

[0010] Furthermore, the cross-sectional laser scanner is fastened to the transverse vibration isolation layer with four M8 quick-release screws, and a limiting groove is provided to fix the repeated installation position; the inertial measurement unit is fastened to the base plate with four M5 quick-release screws, and a limiting groove is provided to fix the repeated installation position; the GNSS navigation board is installed on the base plate with four M3 screws.

[0011] Furthermore, the average thickness of the integrated aluminum keel is 10mm, and the average thickness of the transverse vibration isolation layer is 15mm.

[0012] Furthermore, the cross-sectional laser scanner has several eaves-style heat dissipation windows on its left and right side walls, and these eaves-style heat dissipation windows are arranged vertically.

[0013] Furthermore, the eaves-type heat dissipation window is a heat dissipation window with a downward-curved eaves to prevent raindrops and moisture from entering the device.

[0014] Furthermore, a reverse cooling fan is installed inside the left sidewall of the cross-sectional laser scanner, and a forward cooling fan is installed inside the right sidewall; both the forward and reverse cooling fans are mounted on the eaves-type heat dissipation windows. During operation, air enters the interior through the left heat dissipation window, carries the heat dissipated by the equipment, and then exits through the right heat dissipation window, forming a transverse gas convection channel. Cool air forms a circulation channel inside, accelerating the air-cooling effect.

[0015] Furthermore, a mesh-type heat dissipation window is provided at the center of the circuit board assembly on the base plate. A forward-facing cooling fan is installed inside the mesh-type heat dissipation window and is located on the side close to the cross-section laser scanner. This allows the heat generated by the equipment to be dissipated in a timely manner, ensuring a suitable operating temperature and thus further guaranteeing measurement accuracy.

[0016] Furthermore, the top plate is provided with several heat dissipation vents, which are distributed on both sides of the panoramic camera.

[0017] Furthermore, the panoramic camera is mounted on the outside of the top plate of the housing using four M8 quick-release screws, allowing for quick assembly and disassembly according to different testing requirements. Specifically, a Ladybug panoramic camera is used.

[0018] Furthermore, the housing also includes vertical heat dissipation channels that connect the upper and lower layers of the housing and are located on the side panel opposite the cross-sectional laser scanner. During operation, air enters the interior through the upper left heat dissipation window and exits downwards through the lower bottom mesh heat dissipation window, forming a vertical gas convection channel. This ensures that the heat generated by all components is dissipated in a timely manner, achieving the optimal operating temperature and ensuring stable measurement accuracy.

[0019] Furthermore, the circuit board assembly includes an industrial control computer motherboard, a GNSS navigation board, a time synchronization module, power supply lines, and communication lines. All circuit board assemblies are stacked high using copper pillars to prevent short circuits caused by dust or moisture at the bottom. The industrial control computer motherboard is responsible for converting user commands into machine commands, triggering the start and stop of the cross-section laser scanner, inertial measurement unit, GNSS navigation board, and panoramic camera, and simultaneously feeding back the status of each sensor element to the user. The time synchronization module is responsible for aligning its own high-precision temperature-controlled crystal oscillator with the time input from the GNSS navigation board, and then synchronously distributing the time to other sensor elements, unifying the time reference of each sensor element. The power supply lines connect the external power interface to the circuit board assembly and each sensor element, forming a power supply channel. The communication lines connect the external display device to the circuit board assembly and each sensor element, forming a data acquisition and transmission channel.

[0020] The advantages and positive effects of this utility model are as follows: This invention employs an integrated aluminum keel as the core load-bearing structure, which is machined from a single aluminum ingot using rotary drilling, achieving seamless forming of the sidewalls. This integrated design avoids the connection weaknesses and potential deformation risks of traditional spliced ​​frames, greatly enhancing the overall structural strength and stability of the device. It provides a robust and reliable installation benchmark for high-precision sensors, fundamentally ensuring the accuracy of long-term measurement data.

[0021] This invention physically isolates the high-frequency vibrating cross-sectional laser scanner from the highly vibration-sensitive inertial measurement unit (IMU) by integrally molding a transverse vibration isolation layer in the middle of a one-piece aluminum keel. This design eliminates the need for screw connections, suppressing the impact of vibration on IMU accuracy at its structural source. It avoids the transmission of vibration through connectors, effectively suppressing the adverse effects of the scanner's high-speed rotational vibration on IMU measurement accuracy and significantly reducing measurement noise.

[0022] This invention features a multi-channel heat dissipation system composed of horizontal and vertical airflow channels. By opening heat dissipation windows on different side walls and configuring forward and reverse fans, forced gas convection is formed, thereby achieving efficient and active heat dissipation inside the device. This active heat dissipation method can efficiently dissipate the heat generated by the core sensors and electronic components (such as industrial control computers, circuit boards, etc.) inside the device in a timely manner, maintaining a suitable operating temperature, effectively preventing measurement drift or equipment failure caused by overheating, and ensuring the reliability of the device during long-term continuous operation in the field.

[0023] This invention employs a distributed structure to optimize the layout of internal components. The vibration source (laser scanner) and the sensing element (inertial measurement unit) are placed in upper and lower layers separated by a vibration isolation layer, while the panoramic camera is externally mounted. The planar distribution of internal components not only achieves the goals of vibration isolation and heat dissipation in a coordinated manner, but also makes the internal space well-organized and the wiring clear, greatly facilitating daily maintenance, troubleshooting, and component repair.

[0024] This invention employs a highly integrated structural design, innovatively combining high rigidity, efficient vibration isolation, and active heat dissipation into a single integrated structure. This successfully resolves the technical contradiction of balancing structural stability, vibration sensitivity, and thermal management in high-precision mobile measurement systems. The device exhibits excellent overall rigidity, strong vibration resistance, and high heat dissipation efficiency, providing a stable, reliable, and durable hardware platform for high-precision vehicle-mounted mobile measurement of strip lines.

[0025] This invention, through its integrated structure and highly reliable design, significantly improves the overall performance of the vehicle-mounted mobile measurement device in complex vehicle environments, providing an ideal platform for long-term, long-distance field vehicle-mounted mobile measurement. Its superior vibration isolation capability ensures that the measurement accuracy of the inertial measurement unit does not deteriorate due to accumulated errors when the vehicle is continuously traveling on different road conditions. Its efficient multi-channel heat dissipation system guarantees that the internal temperature remains controllable even after continuous operation for several hours or longer, avoiding interruptions or data quality degradation caused by overheating. This high stability and reliability enable this invention to efficiently and effectively complete continuous inspection tasks on large-scale strip lines such as railways, highways, rivers, and pipelines, significantly improving operational efficiency and overall data quality. It has positive practical value and industrial significance for promoting the advancement of infrastructure inspection technology. Attached Figure Description

[0026] Figure 1 This is a three-dimensional structural schematic diagram of the present invention; Figure 2 This is a three-dimensional view of the internal structure of this utility model; Figure 3 This is a three-dimensional view of the underlying structure of this utility model; In the figure, 1-cross-section laser scanner; 2-panoramic camera; 3-aluminum keel; 4-eave-type heat dissipation window; 5-lateral vibration isolation layer; 6-heat dissipation fan; 7-vertical heat dissipation channel; 8-inertial measurement unit; 9-mesh heat dissipation window; 10-circuit board assembly. Detailed Implementation

[0027] To further disclose the invention content, features, and effects of this utility model, the following examples are provided in conjunction with the accompanying drawings for detailed description. In the following description of the embodiments, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this patent and simplifying the description. They do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this patent.

[0028] In the following description of the embodiments, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection or setting, a detachable connection or setting, or an integral connection or setting. Those skilled in the art can understand the specific meaning of the above terms in this patent according to the specific circumstances.

[0029] Example: See Appendix Figure 1-3 A vehicle-mounted mobile measuring device for strip line detection includes a housing, a panoramic camera 2, and a cross-sectional laser scanner 1. The panoramic camera 2 is mounted on the top of the housing, and the cross-sectional laser scanner 1 is embedded in the side. The housing is assembled from an integrated aluminum frame 3, a top plate, and a bottom plate. The integrated aluminum frame 3 is seamlessly connected by four side walls and a transverse vibration isolation layer 5. The cross-sectional laser scanner 1 is mounted on the transverse vibration isolation layer 5. An inertial measurement unit 8 and a circuit board assembly 10 are mounted on the bottom plate below the transverse vibration isolation layer 5. The housing has a heat dissipation structure that can form convection. When the cross-sectional laser scanner 1 is working, the lens rotates at a speed of 200 rpm, generating high-frequency vibration noise that will increase the inertial navigation measurement error; therefore, it is placed in the upper space. Other components are installed in a planar distribution structure on the bottom layer to ensure efficient heat dissipation and facilitate subsequent maintenance and repair.

[0030] The integrated aluminum keel 3 is machined from a single aluminum ingot by rotary drilling from both the top and bottom surfaces to create two layers of installation space. The sidewalls are seamlessly formed without screws, preventing structural deformation caused by long-term vibration and enhancing the overall strength and stability of the load-bearing structure. A transverse vibration isolation layer 5 is retained in the middle of the aluminum ingot to suppress the high-frequency vibrations from the high-speed rotation of the laser scanner 1 lens on the deformation of the load-bearing structure. The integrated aluminum keel 3 has an average thickness of 10mm, and the transverse vibration isolation layer 5 has an average thickness of 15mm.

[0031] The top and bottom plates are each secured to the integrated aluminum keel 3 with 18 M3 screws, forming a shell that serves as the load-bearing structure. The cross-sectional laser scanner 1 is secured to the transverse vibration isolation layer 5 with 4 M8 quick-release screws, and a limiting groove is provided to fix the repeated installation position. The inertial measurement unit 8 is secured to the bottom plate with 4 M5 quick-release screws, and a limiting groove is provided to fix the repeated installation position. The GNSS navigation board is mounted on the bottom plate with 4 M3 screws. The panoramic camera 2 is mounted on the outside of the top plate of the shell with 4 M8 quick-release screws, and can be quickly assembled and disassembled according to different detection requirements. The panoramic camera 2 is a Ladybug panoramic camera.

[0032] The cross-sectional laser scanner 1 has several eaves-type heat dissipation windows 4 on its left and right side walls, arranged vertically. Each eaves-type heat dissipation window 4 has a downward-facing curved eave to prevent raindrops and moisture from entering the device. A reverse cooling fan 6 is installed inside the left side wall of the cross-sectional laser scanner 1, and a forward cooling fan 6 is installed inside the right side wall; both the forward and reverse cooling fans 6 are located on the eaves-type heat dissipation windows 4. During operation, air enters the device through the left heat dissipation window, carries the heat emitted by the device, and exits through the right heat dissipation window, forming a horizontal air convection channel. Cool air circulates internally, accelerating the air-cooling effect. Both the forward and reverse cooling fans 6 are small fans.

[0033] The circuit board assembly 10 on the base plate has a mesh-type heat dissipation window 9 at its center. A forward-facing cooling fan 6 is installed inside the mesh-type heat dissipation window 9 and positioned near the cross-section laser scanner 1. This allows the equipment's operating heat to be dissipated promptly, ensuring a suitable operating temperature and further guaranteeing measurement accuracy. The top plate has several heat dissipation vents distributed on both sides of the panoramic camera 2.

[0034] The housing also includes a vertical heat dissipation channel 7, which connects the upper and lower layers of the housing and is located on the side plate opposite the cross-section laser scanner 1. During operation, air enters the interior through the heat dissipation window on the upper left side and exits downward through the mesh heat dissipation window 9 at the bottom of the lower layer, forming a vertical gas convection channel. This ensures that the heat generated by all components is dissipated in a timely manner, establishing the optimal operating temperature and ensuring stable measurement accuracy.

[0035] The circuit board assembly 10 includes an industrial control computer motherboard, a GNSS navigation board, a time synchronization module, power supply lines, and communication lines. All circuit board assemblies 10 are stacked high using copper pillars to prevent short circuits caused by dust or moisture at the bottom. The industrial control computer motherboard is responsible for converting user commands into machine commands, triggering the start and stop of the cross-section laser scanner 1, inertial measurement unit 8, GNSS navigation board, and panoramic camera 2, and simultaneously feeding back the status of each sensor element to the user. The time synchronization module is responsible for aligning its own high-precision temperature-controlled crystal oscillator with the time input from the GNSS navigation board, and then synchronously distributing the time to other sensor elements, unifying the time reference of each sensor element. The power supply lines connect the external power interface to the circuit board assembly and each sensor element, forming a power supply channel. The communication lines connect the external display device to the circuit board assembly and each sensor element, forming a data acquisition and transmission channel.

[0036] Working principle: The installation and usage process of the above-mentioned vehicle-mounted mobile measuring device for strip line detection is as follows: First, the inertial measurement unit 8 and circuit board assembly 10 are planarly distributed on the base plate according to the design positions. The inertial measurement unit 8 is flush against the base plate and secured with four screws. The circuit board is raised by a thin copper pillar frame and secured to the base plate with screws. The power supply and communication cables between the circuit boards and between the circuit boards and the core sensor are then connected and the cables are neatly arranged and secured.

[0037] Next, the integrated aluminum keel 3 is fitted onto the base plate from the top and secured with 18 screws. The inertial measurement unit 8 and circuit board assembly 10 are then installed into the lower mounting space. The cross-sectional laser scanner 1 is positioned according to the limiting groove on the transverse vibration isolation layer 5 and secured with 4 screws. The power and communication cables between the cross-sectional laser scanner 5 and the circuit board are connected, and the cables are tidied and secured. Small cooling fans 6 are installed inside the eaves-type heat dissipation window 4, with positive blades on the left and negative blades on the right. The fan power cables are connected to form a transverse heat dissipation channel.

[0038] Finally, replace the top plate and secure it with 18 screws. Install the Ladybug panoramic camera 2 on the top plate and connect the camera module's power and communication cables. Connect the external power supply, start the measuring device, and monitor and test the operating status of each sensor component to ensure it is functioning correctly.

[0039] Although the preferred embodiments of the present invention have been described above, the present invention is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other modifications under the guidance of the present invention without departing from the spirit and scope of the claims. These modifications all fall within the protection scope of the present invention.

Claims

1. A vehicle-mounted mobile measuring device for strip line inspection, characterized in that: The device includes a housing, a panoramic camera (2), and a cross-sectional laser scanner (1). The panoramic camera (2) is located on the top of the housing, and the cross-sectional laser scanner (1) is embedded in the side. The housing is assembled from an integrated aluminum keel (3), a top plate, and a bottom plate. The integrated aluminum keel (3) is seamlessly connected by four side walls and a transverse vibration isolation layer (5). The cross-sectional laser scanner (1) is located on the transverse vibration isolation layer (5). An inertial measurement unit (8) and a circuit board assembly (10) are located on the bottom plate below the transverse vibration isolation layer (5). The housing is provided with a heat dissipation structure that can form convection.

2. The vehicle-mounted mobile measuring device for strip line detection according to claim 1, characterized in that: The integrated aluminum keel (3) is made by rotary drilling from the top and bottom surfaces of a whole aluminum ingot to create two layers of installation space; a transverse vibration isolation layer (5) is retained in the middle of the aluminum ingot.

3. The vehicle-mounted mobile measuring device for strip line detection according to claim 2, characterized in that: The average thickness of the integrated aluminum keel (3) is 10mm, and the average thickness of the transverse vibration isolation layer (5) is 15mm.

4. The vehicle-mounted mobile measuring device for strip line detection according to claim 1, characterized in that: The cross-sectional laser scanner (1) has several eaves-type heat dissipation windows (4) on its left and right side walls, and the eaves-type heat dissipation windows (4) are arranged vertically.

5. A vehicle-mounted mobile measuring device for strip line detection according to claim 4, characterized in that: The eaves-type heat dissipation window (4) is a heat dissipation window with a downward-curving eaves.

6. A vehicle-mounted mobile measuring device for strip line detection according to claim 4, characterized in that: A reverse cooling fan (6) is installed inside the side wall on the left side of the cross-section laser scanner (1), and a forward cooling fan (6) is installed inside the side wall on the right side; both the forward and reverse cooling fans (6) are installed on the eaves-type heat dissipation window (4).

7. A vehicle-mounted mobile measuring device for strip line detection according to claim 1, characterized in that: The circuit board assembly (10) on the base plate is provided with a mesh heat dissipation window (9) at the center. The mesh heat dissipation window (9) is provided with a forward cooling fan (6) and is located on the side close to the cross-section laser scanner (1).

8. A vehicle-mounted mobile measuring device for strip line detection according to claim 1, characterized in that: The top plate is provided with several heat dissipation vents, which are distributed on both sides of the panoramic camera (2).

9. A vehicle-mounted mobile measuring device for strip line detection according to claim 2, characterized in that: The outer shell is also provided with a vertical heat dissipation channel (7), which connects the upper and lower layers inside the outer shell and is located on the side plate opposite the cross-section laser scanner (1).

10. A vehicle-mounted mobile measuring device for strip line detection according to claim 1, characterized in that: The circuit board assembly (10) includes an industrial control computer motherboard, a GNSS navigation board, a time synchronization module, a power supply line and a communication line; the circuit board assembly (10) is laid out by stacking copper pillars.

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