A railway sound barrier vibration test system for high-speed moving scene
By combining 2D+3D detection methods with a central processing unit's data processing system, the problem of detecting high-speed railway sound barriers in high-speed moving scenarios has been solved, achieving efficient and reliable detection of surface defects and dynamic displacement, and reducing safety hazards.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ENERGY SAVING & ENVIRONMENTAL PROTECTION & OCCUPATIONAL SAFETY & HEALTH RES INST OF CHINA ACAD OF RAILWAY SCI CORP LTD
- Filing Date
- 2025-07-23
- Publication Date
- 2026-07-07
AI Technical Summary
The current inspection of high-speed railway sound barriers mainly relies on manual methods, which are inefficient and easily affected by subjective factors. It is difficult to detect the apparent defects and dynamic displacement defects of the sound barriers in high-speed moving scenarios, which poses safety hazards.
The 2D+3D detection method is adopted. The high-density image scanning of the 2D module and the 3D image are used to obtain the three-dimensional information of the sound barrier. The coordinate information is compared to determine whether the sound barrier has undergone dynamic displacement. The data is then processed and analyzed by the central processing unit.
It enables high-speed dynamic detection of visible surface defects and dynamic displacement defects of sound barriers in high-speed moving scenarios, improving detection efficiency and reliability, and reducing subjective errors of manual inspection.
Smart Images
Figure CN224471577U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a vibration testing system for railway sound barriers in high-speed moving scenarios, belonging to the fields of railway, sound barrier, and machine vision technology. Background Technology
[0002] In my country, high-speed railway construction typically employs sound barriers to reduce noise impact on the surrounding environment. As outdoor structures, high-speed railway sound barriers are constantly exposed to natural environmental factors such as wind, frost, rain, and snow. Their structural components may exhibit visible defects such as rust, corrosion, panel detachment or bulging, and aging and failure of rubber strips. Furthermore, due to the close proximity of high-speed railway sound barriers to the track center, transient pulsating wind loads from high-speed trains significantly affect the sound barriers. Under the long-term, high-frequency action of these pulsating forces, sound barriers are highly susceptible to bolt or connector loosening and detachment, and panel separation and damage.
[0003] Currently, the inspection of high-speed railway sound barriers mainly relies on manual methods such as visual inspection and hammer tapping. These methods are limited and inefficient. Furthermore, manual inspection is easily influenced by subjective factors, potentially overlooking defects in the structure of sound barrier components. This can lead to the barrier panels loosening and detaching after repeated aerodynamic impacts, posing a significant safety hazard. If the loosening reaches a certain level, the sound barrier and other components may be drawn into the train body by the strong airflow generated when vehicles pass, causing a major accident.
[0004] With the development of machine vision technology and the improvement of camera hardware technology, high-frequency cameras are gradually being used to replace manual inspection in railway inspection. Machine vision, with its advantages of non-contact, good repeatability, and dynamic detection, has gradually become the preferred inspection system solution for high-speed inspection. In places where it is difficult or impossible to inspect manually, machine vision combined with image recognition technology can be used for detection and judgment.
[0005] Therefore, providing a vibration testing system for railway sound barriers in high-speed moving scenarios, employing a 2D+3D detection method, utilizes high-density image scanning of the 2D module to detect visible surface defects of the sound barrier, and obtains three-dimensional information of the sound barrier through 3D images. By comparing the obtained coordinate information, it is determined whether the sound barrier has undergone dynamic displacement. Achieving high-speed dynamic detection of defects such as surface defects and dynamic displacement of sound barriers in high-speed moving scenarios has become an urgent technical challenge to be solved in this field. Utility Model Content
[0006] The purpose of this invention is to provide a vibration testing system for railway sound barriers in high-speed moving scenarios. It adopts a 2D+3D detection method, using high-density image scanning of the 2D module to detect visible defects in the sound barrier, and obtaining three-dimensional information of the sound barrier through 3D images. By comparing the obtained coordinate information, it is determined whether the sound barrier has undergone dynamic displacement, thus realizing high-speed dynamic detection of defects such as visible defects and dynamic displacement of the sound barrier in high-speed moving scenarios.
[0007] The above-mentioned objective of this utility model is achieved through the following technical solution:
[0008] A vibration testing system for railway sound barriers in high-speed moving scenarios is characterized by comprising a control and data processing system, a pulse coding system, a first 3D module, a second 3D module, and a 2D module; the control and data processing system is connected to the first 3D module, the second 3D module, and the 2D module respectively; and the pulse coding system is connected to the first 3D module, the second 3D module, and the 2D module respectively.
[0009] Preferably, the control and data processing system includes: a central processing unit, a data storage unit, a data analysis module, and a communication module; the central processing unit is responsible for controlling and coordinating the operation of the entire system and is connected to the data storage unit, the data analysis module, and the communication module; the communication module is used to transmit data from the pulse coding system, the first 3D module, the second 3D module, and the 2D module acquisition module to the central processing unit; the data storage unit is used to store detection data, the data analysis module is used to process and analyze the detection data, and the data storage unit is connected to the data analysis module through a high-speed data interface.
[0010] Preferably, the pulse coding system mainly consists of a pulse encoder and a pulse decoder, used to accurately obtain the moving speed and position of the detection vehicle, and to coordinate with the 2D module and the 3D module to perform synchronous sampling at equal intervals; the pulse encoder is connected to the pulse decoder via a cable.
[0011] Preferably, the pulse encoder is installed on the first wheelset (front wheels) of the first compartment of the inspection vehicle; the pulse decoder is used to receive the output signal of the pulse encoder, decode these signals into usable data, and then transmit them to the central processing unit; the pulse decoder is directly installed on the central processing unit through a socket.
[0012] Preferably, the first 3D module includes a first laser, a lidar, and a first 3D camera; the first 3D module fixture is attached to the inside of the window glass above the wheelset of the first compartment of the inspection vehicle by suction cup; the first laser, lidar, and first 3D camera are respectively connected to a pulse decoder; the first laser and the first 3D camera are both connected to a central processing unit to acquire, transmit, and store the three-dimensional information of the sound barrier, and the lidar is connected to the central processing unit to trigger the shooting.
[0013] Preferably, the first 3D module is installed at the position closest to the two front and rear wheelsets.
[0014] Preferably, the second 3D module includes a second laser and a second 3D camera; the second 3D module fixture is attached to the inside of the window glass above the wheelset of the second compartment of the inspection vehicle by suction cup; the second laser and the second 3D camera are respectively connected to a pulse decoder; the second laser and the second 3D camera are both connected to a central processing unit to acquire, transmit and save the three-dimensional information of the sound barrier.
[0015] Preferably, the second 3D module is installed at the position closest to the two front and rear wheelsets.
[0016] Preferably, the 2D module includes a 2D line scan camera and a laser light source; the 2D module is attached to the inside of the window glass above the wheelset of the second compartment of the inspection vehicle by suction cup; the 2D line scan camera and the laser light source are respectively connected to a pulse decoder; both the 2D line scan camera and the laser light source are connected to a central processing unit to acquire, transmit and save the appearance information of the sound barrier.
[0017] Another objective of this invention is to provide a vibration testing method for railway sound barriers in high-speed moving scenarios.
[0018] The above-mentioned objective of this utility model is achieved through the following technical solution:
[0019] A vibration testing method for railway sound barriers in high-speed moving scenarios, comprising the following steps:
[0020] (1) System initialization
[0021] Start the testing vehicle and initialize the control and data processing system; the host computer software initializes the system to ensure that all modules work normally and synchronously, including the pulse code system, the first 3D module, the second 3D module and the 2D module; the central processing unit performs a self-test and confirms that the connection status and function of each module are normal.
[0022] (2) Data Acquisition
[0023] The pulse coding system generates pulse signals in real time as the detection vehicle moves. The pulse decoder receives and decodes the signals from the pulse encoder to generate vehicle speed and position data, which is then transmitted to the central processor via the communication module.
[0024] (3) Data processing and analysis
[0025] The central processing unit receives data from the pulse coding system, the first 3D module, the second 3D module, and the 2D module. The data analysis module processes and analyzes the three-dimensional data and two-dimensional images in real time. By comparing the coordinate information and the images, it determines whether the sound barrier has dynamic displacement, apparent defects, or other flaws.
[0026] (4) Recording of test results
[0027] If an abnormality is detected in the sound barrier, the alarm information will be archived and displayed through the host computer software to remind relevant personnel to conduct a review. After the inspection is completed, the system will automatically generate an inspection record, and the data analysis results and the original 2D and 3D data will be stored in the data storage unit, and an equipment operation log record will be generated.
[0028] Preferably, in step (2), the first 3D module: after the lidar detects the presence of a sound barrier at the location of the line through ranging, it transmits a trigger signal to the central processing unit. The first laser and the first 3D camera work together to capture a three-dimensional image of the sound barrier, scan the sound barrier and obtain three-dimensional data, which is then transmitted to the central processing unit through the communication module.
[0029] Preferably, in step (2), the second 3D module, the second laser and the second 3D camera work together to capture a three-dimensional image of the sound barrier, and the data is transmitted to the central processing unit through the communication module.
[0030] Preferably, in step (2), the 2D module: a 2D line scan camera captures images of the apparent defects of the sound barrier, a laser light source provides illumination, and the acquired image data is transmitted to the central processing unit through a communication module.
[0031] Beneficial effects:
[0032] This utility model discloses a vibration testing system for railway sound barriers in high-speed moving scenarios. It adopts a 2D+3D detection method. The high-density image scanning of the 2D module is used to detect visible defects in the sound barrier. The 3D image is used to obtain the three-dimensional information of the sound barrier. The obtained coordinate information is compared to determine whether the sound barrier has undergone dynamic displacement. This enables high-speed dynamic detection of defects such as visible defects and dynamic displacement of the sound barrier in high-speed moving scenarios.
[0033] The present invention will be further described below with reference to specific embodiments and accompanying drawings, but this does not imply any limitation on the scope of protection of the present invention. Attached Figure Description
[0034] Figure 1 This is a schematic diagram of the vibration testing system for railway sound barriers used in high-speed moving scenarios in Embodiment 1 of this utility model;
[0035] Figure 2 This is a schematic diagram of the sensor arrangement in the vibration testing system for railway sound barriers used in high-speed moving scenarios in Embodiment 1 of this utility model.
[0036] Main component names:
[0037] 1. Pulse code system; 2. Control and data processing system
[0038] 3 First 3D Module 3-1 First Laser
[0039] 3-2 LiDAR 3-3 First 3D Camera
[0040] 4. Second 3D Module 4-1 Second Laser
[0041] 4-2 Second 3D Camera 5 2D Module
[0042] 5-1 2D line scan camera with 6 sound barriers Detailed Implementation
[0043] Unless otherwise specified, all components used in the following embodiments are conventional components available on the market in this field, all connections are conventional connections, all programs are conventional programs, and all detection methods are conventional detection methods.
[0044] Example 1
[0045] like Figure 1 The diagram shown is a structural schematic of a railway sound barrier vibration testing system for high-speed moving scenarios in Embodiment 1 of this utility model; as shown... Figure 2 The diagram shows the sensor arrangement in a railway sound barrier vibration testing system for high-speed moving scenarios according to Embodiment 1 of this utility model. Specifically, 1 is a pulse coding system, 2 is a control and data processing system, 3 is a first 3D module, 3-1 is a first laser, 3-2 is a lidar, 3-3 is a first 3D camera, 4 is a second 3D module, 4-1 is a second laser, 4-2 is a second 3D camera, 5 is a 2D module, 5-1 is a 2D line scan camera, and 6 is a sound barrier. The railway sound barrier vibration testing system for high-speed moving scenarios in Embodiment 1 of this utility model includes a control and data processing system 2, a pulse coding system 1, a first 3D module 3, a second 3D module 4, and a 2D module 5. The control and data processing system 2 is connected to the first 3D module 3, the second 3D module 4, and the 2D module 5, respectively. The pulse coding system 1 is connected to the first 3D module 3, the second 3D module 4, and the 2D module 5, respectively.
[0046] The control and data processing system 2 includes: a central processing unit, a data storage unit, a data analysis module, and a communication module; the central processing unit is responsible for controlling and coordinating the operation of the entire system and is connected to the data storage unit, the data analysis module, and the communication module; the communication module is used to transmit data from the pulse coding system 1, the first 3D module 3, the second 3D module 4, and the 2D module 5 acquisition module to the central processing unit; the data storage unit is used to store detection data, and the data analysis module is used to process and analyze the detection data; the data storage unit is connected to the data analysis module through a high-speed data interface.
[0047] The software portion of the control and data processing system 2 includes two parts: lower-level computer software and upper-level computer software. The upper-level computer software is mainly used for overall system control and data processing, while the lower-level computer software is mainly used for data acquisition and transmission. It should be noted that the innovation of this utility model lies in the hardware, and the corresponding software can be developed as needed.
[0048] The host computer software functions include: system initialization, responsible for system startup and initialization, ensuring normal synchronous operation of each module; data acquisition and processing, acquiring data from each module and performing real-time processing and analysis; log recording and alarms, real-time monitoring of system status, generating logs, performing fault diagnosis, and generating alarm information; data storage and management, storing processed data in the data storage unit and performing data management and backup; and communication and remote monitoring, receiving data acquired by the pulse code system, the first 3D module, the second 3D module, and the 2D module through the communication module.
[0049] The lower-level software functions include: data acquisition and control, controlling the data acquisition of the pulse code system, 3D module, and 2D module; data packaging and transmission, packaging the acquired data and transmitting it to the upper-level computer for processing; and module status setting, monitoring the working status of each module and executing the upper-level computer's control commands for each module.
[0050] The pulse coding system 1 mainly consists of a pulse encoder and a pulse decoder, used to accurately obtain the moving speed and position of the inspection vehicle, and to coordinate with the 2D module and 3D module to perform equidistant synchronous sampling; the pulse encoder is connected to the pulse decoder via a cable; the pulse encoder is installed on the first wheel pair (front wheel) of the first compartment of the inspection vehicle; the pulse decoder is used to receive the output signal of the pulse encoder, decode these signals into usable data, and then transmit them to the central processing unit; the pulse decoder is directly installed on the central processing unit through a socket.
[0051] The first 3D module 3 includes a first laser 3-1, a lidar 3-2, and a first 3D camera 3-3; the first 3D module fixture is attached to the inside of the window glass above the wheelset of the first compartment of the inspection vehicle by suction cups; the first laser 3-1, lidar 3-2, and first 3D camera 3-3 are respectively connected to a pulse decoder; the first laser 3-1 and the first 3D camera 3-3 are both connected to a central processing unit to acquire, transmit, and store the three-dimensional information of the sound barrier; the lidar is connected to the central processing unit for triggering the shooting.
[0052] The second 3D module 4 includes a second laser 4-1 and a second 3D camera 4-2. The tooling of the second 3D module 4 is attached to the inside of the window glass above the wheelset of the second compartment of the inspection vehicle by suction cup. The second laser 4-1 and the second 3D camera 4-2 are respectively connected to a pulse decoder. Both the second laser 4-1 and the second 3D camera 4-2 are connected to the central processing unit to acquire, transmit and save the three-dimensional information of the sound barrier.
[0053] The 2D module 5 includes a 2D line scan camera 5-1 and a laser light source; the 2D module 5 is attached to the inside of the window glass above the wheelset of the second compartment of the inspection vehicle by suction cup; the 2D line scan camera 5-1 and the laser light source are respectively connected to the pulse decoder; the 2D line scan camera 5-1 and the laser light source are both connected to the central processing unit to acquire, transmit and save the appearance information of the sound barrier.
[0054] The vibration testing method for railway sound barriers in high-speed moving scenarios in Embodiment 1 of this utility model has the following steps:
[0055] (1) System initialization
[0056] Start the testing vehicle and initialize the control and data processing system; the host computer software initializes the system to ensure that all modules work normally and synchronously, including the pulse code system, the first 3D module, the second 3D module and the 2D module; the central processing unit performs a self-test and confirms that the connection status and function of each module are normal.
[0057] (2) Data Acquisition
[0058] During this process, the pulse coding system generates pulse signals in real time as the detection vehicle moves. The pulse decoder receives and decodes the signals from the pulse encoder to generate vehicle speed and position data, which are then transmitted to the central processor via the communication module.
[0059] First 3D module: After the lidar detects the presence of a sound barrier at the location of the line through ranging, it transmits a trigger signal to the central processing unit. The first laser and the first 3D camera work together to capture a three-dimensional image of the sound barrier, scan the sound barrier and acquire three-dimensional data, which is then transmitted to the central processing unit through the communication module.
[0060] The second 3D module: The second laser and the second 3D camera work together to capture three-dimensional images of the sound barrier, and the data is transmitted to the central processing unit through the communication module;
[0061] 2D module: A 2D line scan camera captures images of the apparent damage to the sound barrier, a laser light source provides illumination, and the acquired image data is transmitted to the central processing unit via a communication module;
[0062] (3) Data processing and analysis
[0063] The central processing unit receives data from the pulse coding system, the first 3D module, the second 3D module, and the 2D module. The data analysis module processes and analyzes the three-dimensional data and two-dimensional images in real time. By comparing the coordinate information and the images, it determines whether the sound barrier has dynamic displacement, apparent defects, or other flaws.
[0064] (4) Recording of test results
[0065] If an abnormality is detected in the sound barrier, the alarm information will be archived and displayed through the host computer software to remind relevant personnel to conduct a review. After the inspection is completed, the system will automatically generate an inspection record, and the data analysis results and the original 2D and 3D data will be stored in the data storage unit, and an equipment operation log record will be generated.
[0066] The railway sound barrier vibration testing system in Embodiment 1 of this utility model, used in high-speed moving scenarios, adopts a 2D+3D approach. It detects defects and flaws in the two-dimensional information of the sound barrier using 2D images, and acquires the desired three-dimensional information using 3D images. The obtained coordinate information is then compared to determine whether the tested object is in a normal state. Simultaneously, a dual 3D system can be used for acquisition, placed in two separate carriages to form synchronous, out-of-position acquisition, capturing the vibration process of the sound barrier at high speeds. This integrated 2D+3D approach allows for comprehensive, multi-directional data acquisition and extraction of the entire sound barrier, greatly ensuring the high reliability of sound barrier defect detection. A front-mounted lidar triggers the system's operation; a pulse encoder mounted on the wheels sends a uniform square wave signal, which, in conjunction with the 2D and 3D modules, performs synchronous sampling at equal intervals.
[0067] In Embodiment 1 of this utility model, the railway sound barrier vibration testing system for high-speed moving scenarios can be installed at the window glass inside the test vehicle. If there are no windows above the front and rear wheelsets, the system can be installed at the location closest to the front and rear wheelsets.
[0068] The vibration testing system for railway sound barriers in high-speed moving scenarios of this utility model can conduct dynamic detection of possible surface defects and dynamic displacement under wind loads in high-speed moving scenarios. The detection items include: (1) Shaking of the barrier column and sound barrier panel: the bottom bolts of the barrier column are loose, which causes the sound barrier panel to loosen and generate peak value greater than 5mm under the impact of train wind, which is significantly greater than the standard limit for abnormal shaking; (2) Corrosion of the barrier column: the barrier column is corroded, which reduces the strength, toughness and fatigue resistance of the barrier column; (3) Visible surface defects such as cracks, damage, missing parts, rubber strip detachment, sound barrier tilting or column tilting.
[0069] The above description is only a preferred embodiment of the present utility model, and therefore cannot be used to limit the scope of the present utility model. All equivalent changes and modifications made in accordance with the scope of the present utility model patent and the contents of the specification should still fall within the scope of the present utility model.
Claims
1. A vibration testing system for railway sound barriers in high-speed moving scenarios, characterized in that: It includes a control and data processing system, a pulse coding system, a first 3D module, a second 3D module, and a 2D module; the control and data processing system is connected to the first 3D module, the second 3D module, and the 2D module respectively; the pulse coding system is connected to the first 3D module, the second 3D module, and the 2D module respectively.
2. The vibration testing system for railway sound barriers in high-speed moving scenarios according to claim 1, characterized in that: The control and data processing system includes: a central processing unit, a data storage unit, a data analysis module, and a communication module; the central processing unit is responsible for controlling and coordinating the operation of the entire system and is connected to the data storage unit, the data analysis module, and the communication module; the communication module is used to transmit data from the pulse coding system, the first 3D module, the second 3D module, and the 2D acquisition module to the central processing unit; the data storage unit is used to store detection data, and the data analysis module is used to process and analyze the detection data. The data storage unit is connected to the data analysis module through a high-speed data interface.
3. The vibration testing system for railway sound barriers in high-speed moving scenarios according to claim 2, characterized in that: The pulse coding system mainly consists of a pulse encoder and a pulse decoder, used to accurately obtain the moving speed and position of the detection vehicle, and to coordinate with the 2D module and 3D module to perform synchronous sampling at equal intervals; The pulse encoder is connected to the pulse decoder via a cable.
4. The railway sound barrier vibration testing system for high-speed moving scenarios according to claim 3, characterized in that: The pulse encoder is installed on the first wheelset (front wheels) of the first compartment of the inspection vehicle; the pulse decoder is used to receive the output signal of the pulse encoder, decode these signals into usable data, and then transmit them to the central processing unit; the pulse decoder is directly installed on the central processing unit through a socket.
5. The vibration testing system for railway sound barriers in high-speed moving scenarios according to claim 4, characterized in that: The first 3D module includes a first laser, a lidar, and a first 3D camera; the first 3D module fixture is attached to the inside of the window glass above the wheelset of the first compartment of the inspection vehicle by suction cup; the first laser, lidar, and first 3D camera are respectively connected to a pulse decoder; the first laser and the first 3D camera are both connected to a central processing unit to acquire, transmit, and save the three-dimensional information of the sound barrier, and the lidar is connected to the central processing unit to trigger the shooting.
6. The railway sound barrier vibration testing system for high-speed moving scenarios according to claim 5, characterized in that: The first 3D module is installed at the position closest to the two front and rear wheelsets.
7. The vibration testing system for railway sound barriers in high-speed moving scenarios according to claim 6, characterized in that: The second 3D module includes a second laser and a second 3D camera; the tooling of the second 3D module is attached to the inside of the window glass above the wheelset of the second compartment of the inspection vehicle by suction cup; the second laser and the second 3D camera are respectively connected to a pulse decoder; the second laser and the second 3D camera are both connected to a central processing unit to acquire, transmit and save the three-dimensional information of the sound barrier.
8. The vibration testing system for railway sound barriers in high-speed moving scenarios according to claim 7, characterized in that: The second 3D module is installed at the position closest to the two front and rear wheelsets.
9. The vibration testing system for railway sound barriers in high-speed moving scenarios according to claim 8, characterized in that: The 2D module includes a 2D line scan camera and a laser light source; the 2D module is attached to the inside of the window glass above the wheelset of the second compartment of the inspection vehicle by suction cup; the 2D line scan camera and the laser light source are respectively connected to a pulse decoder; both the 2D line scan camera and the laser light source are connected to a central processing unit to acquire, transmit and save the appearance information of the sound barrier.