Subway vibration high-efficiency test platform
By using elastic clamps and photoelectric conversion modules on both sides of the subway track and track slab, the problems of difficult fixing of sensing optical fibers and poor testing accuracy were solved, achieving high efficiency and high precision in subway vibration testing.
Patent Information
- Application Number
- CN202511215175.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-28
- Publication Date
- 2025-11-18
AI Technical Summary
In subway vibration testing, fixing the sensing fiber is difficult, resulting in time-consuming and labor-intensive construction, poor testing accuracy, and difficulty in stably transmitting vibration signals.
The sensing optical cable is installed on both sides of the subway track and track slab using elastic clamping components. The signal is processed using a tunable laser light source and photoelectric conversion module to ensure effective transmission and accurate monitoring of vibration signals.
It enables rapid installation and disassembly of sensing optical cables, improving the efficiency and accuracy of subway vibration testing and ensuring the accurate transmission and processing of vibration signals.
Smart Images
Figure CN120970796A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of subway vibration testing, in particular to a subway vibration efficient testing platform. BACKGROUND
[0002] During subway operation, the track and track board are under great stress, and the track and track board will vibrate during subway operation. If the vibration is too large, it will affect the safety of subway operation. In addition, such vibration will affect the foundation and transmit vibration through the foundation, which may cause adverse effects on surrounding buildings, plants and crowds, therefore, vibration testing is needed.
[0003] During the vibration testing of the subway, sensing optical fibers can be used for vibration monitoring, but the fixing of the sensing optical fibers is difficult, time-consuming and laborious, which makes it difficult for the vibration of the track and track board to be stably transmitted to the sensing optical fibers, resulting in poor testing accuracy, which needs to be improved. SUMMARY
[0004] The technical problem solved by the present application is to provide a subway vibration efficient testing platform to test subway vibration and improve testing efficiency and accuracy.
[0005] To solve the above technical problems, one technical solution adopted by the present application is to provide a subway vibration efficient testing platform, comprising: a sensing optical cable, a first optical fiber joint box, a second optical fiber joint box, a light source, an optical-electric conversion module and a signal processing unit, the sensing optical cable is arranged on one side or both sides of the track and track board of the subway through elastic clamping members, the first optical fiber joint box is arranged at the front end of the sensing optical cable, the second optical fiber joint box is arranged at the tail end of the sensing optical cable, the light source is provided with a first multi-core communication optical cable between the first optical fiber joint box, the optical-electric conversion module is provided with a second multi-core communication optical cable between the second optical fiber joint box, the optical-electric conversion module is connected with the signal processing unit for signal transmission and processing.
[0006] In a preferred embodiment of the present application, the light source uses a tunable laser light source.
[0007] In a preferred embodiment of the present application, the elastic clamping member comprises a C-shaped fixing part and an arc-shaped elastic sheet, the arc-shaped elastic sheets are oppositely arranged at the two ends of the opening of the C-shaped fixing part to elastically clamp the sensing optical cable.
[0008] In a preferred embodiment of the present application, the arc-shaped elastic sheet end is provided with an outwardly turned circular arc guide part, and the distance between the two circular arc guide parts is less than the outer diameter of the sensing optical cable.
[0009] In a preferred embodiment of the present application, the C-shaped fixing part, the arc-shaped elastic sheet and the circular arc guiding part adopt an integrated stainless steel sheet bending structure.
[0010] In a preferred embodiment of the present application, the C-shaped fixing part is provided with a screw extending to the back side.
[0011] In a preferred embodiment of the present application, the track and the track plate of the subway are provided with screw holes corresponding to the screw.
[0012] In a preferred embodiment of the present application, the sensing optical cable extends along the length direction of the track of the subway.
[0013] In a preferred embodiment of the present application, the sensing optical cable is distributed on one side of the track and both sides of the track plate of the subway.
[0014] In a preferred embodiment of the present application, the sensing optical cable is provided with at least one sensing optical fiber.
[0015] The present application has the beneficial effect that the subway vibration efficient test platform provided by the present application can quickly install the sensing optical cable on one side or both sides of the track and the track plate of the subway through the elastic clamping piece, is simple and convenient to operate, and can effectively transmit the vibration of the track and the track plate to the sensing optical cable through the elastic clamping piece, so as to ensure that the sensing optical fiber in the sensing optical cable can sense the vibration of the track and the track plate, then transmit the optical signal of the sensing optical fiber to the photoelectric conversion module through the second multi-core communication optical cable, and finally process the signal through the signal processing unit to realize the test of the subway vibration, thereby improving the test efficiency and precision. BRIEF DESCRIPTION OF DRAWINGS
[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor. Figure 1 is a structure diagram of a preferred embodiment of the subway vibration efficient test platform of the present application; Figure 2 is Figure 1 a structure diagram of the elastic clamping piece; Figure 3 is a working principle diagram of a preferred embodiment of the subway vibration efficient test platform of the present application. DETAILED DESCRIPTION
[0017] The technical solutions in the embodiments of the present application will be clearly and completely described below. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope of the present application.
[0018] Please refer to Figures 1-3 The embodiments of the present application include: As Figure 1 The subway vibration efficient test platform shown in the figure is used for vibration test of the subway, and comprises a sensing optical cable 4, a first optical fiber joint box 5, a second optical fiber joint box 6, a light source 9, an optical-electric conversion module 11 and a signal processing unit 10. The sensing optical cable 4 is arranged on one side or both sides of a track 2 and a track plate 1 of the subway through elastic clamping members 3. The sensing optical cable 4 extends along the length direction of the track 2 of the subway to perform vibration test on a section of the track 2 and the track plate 1.
[0019] In the embodiment, the sensing optical cable 4 is distributed on one side of the track 2 and both sides of the track plate 1, as shown in the figure, a total of four sensing optical cables 4 are arranged to monitor the vibration of the track 2 and the track plate 1. Figure 1 In order to facilitate installation and dismounting of the sensing optical cable 4, as shown in the figure, the elastic clamping member 3 comprises a C-shaped fixed part 31 and an arc-shaped elastic sheet 32. The C-shaped fixed part 31 is provided with a screw 34 extending to the back side outside. The track 2 and the track plate 1 are provided with screw holes corresponding to the screw 34, so that the C-shaped fixed part 31 can be conveniently installed, fixed and dismounted, and the vibration transmission effect is good. In addition, the screw holes have small diameter and small quantity, and do not affect the structural stability of the track 2 and the track plate 1. Figure 2 The arc-shaped elastic sheet 32 is arranged opposite to the opening ends of the C-shaped fixed part 31 to elastically clamp the sensing optical cable 4, so as to avoid loosening of the sensing optical cable 4 and effectively transmit the vibration to the sensing optical cable 4, thereby improving the test precision and reducing the error. The end of the arc-shaped elastic sheet 32 is provided with a circular arc guide part 33 turned outward, which is beneficial to extrusion of the sensing optical cable 4 to enter between the arc-shaped elastic sheets 32 on both sides through the circular arc guide part 33. The spacing between the two circular arc guide parts 33 is smaller than the outer diameter of the sensing optical cable 4, so as to avoid dismounting of the sensing optical cable 4.
[0020] In the embodiment, the C-shaped fixed part 31, the arc-shaped elastic sheet 32 and the circular arc guide part 33 adopt an integrated stainless steel sheet bending structure, which is formed by bending a stainless steel sheet, has low cost, is corrosion-resistant, has long service life and can be repeatedly used.
[0021]
[0022] The first optical fiber joint box 5 is arranged at the front end of the sensing optical cable 4, and the light source 9 is arranged with the first multi-core communication optical cable 8 between the first optical fiber joint box 5, in the embodiment, the light source 9 adopts a tunable laser light source, and can send optical signals to the four sensing optical cables 4 through the first multi-core communication optical cable 8.
[0023] The second optical fiber joint box 6 is arranged at the tail end of the sensing optical cable 4, and the photoelectric conversion module 11 is arranged with the second multi-core communication optical cable 7 between the second optical fiber joint box 6, and at least one sensing optical fiber 41 is arranged in the sensing optical cable 4, the sensing optical fiber 41 senses the vibration of the outside world, and the light phase, wavelength and other light signal characteristics change.
[0024] The photoelectric conversion module 11 is connected with the signal processing unit 10, and the signal transmission and processing are carried out, the signal processing unit 10 utilizes the correlation between the change of the light signal characteristics and the vibration of the outside world, realizes the vibration monitoring, and generates real-time vibration data. The signal processing unit 10 can communicate with the mobile terminal (tablet computer or smart phone), and sends the real-time vibration data to the mobile terminal, compares the real-time vibration data with the normal vibration data in the database, judges whether the vibration of the subway is abnormal or not, and the operation is simple.
[0025] In summary, the subway vibration efficient test platform provided by the application has the advantages that the sensing optical cable is flexible in installation and dismounting, the vibration monitoring of the track and the track board of the subway can be quickly carried out, the operation simplicity is improved, and the accuracy of the test data is ensured.
[0026] The above-mentioned only for the embodiment of the application, and not therefore limit the patent range of the application, any equivalent structure or equivalent process transformation, or direct or indirect application in other related technical fields, are also included in the patent protection range of the application.
Claims
1. A high-efficiency vibration testing platform for subways, characterized in that, include: The sensing optical cable is respectively installed on one or both sides of the subway track and track slab by elastic clamps. The first fiber optic junction box is disposed at the front end of the sensing optical cable. The second fiber optic connector is located at the tail end of the sensing optical cable. A light source, wherein a first multi-core communication optical cable is provided between the light source and the first optical fiber junction box; A photoelectric conversion module, wherein a second multi-core communication optical cable is provided between the photoelectric conversion module and the second optical fiber junction box; The signal processing unit is connected to the photoelectric conversion module to transmit and process signals.
2. The high-efficiency subway vibration testing platform according to claim 1, characterized in that, The light source is a tunable laser light source.
3. The high-efficiency subway vibration testing platform according to claim 1, characterized in that, The elastic clamping component includes a C-shaped fixing part and an arc-shaped spring piece. The arc-shaped spring piece is disposed opposite to the two ends of the opening of the C-shaped fixing part to elastically clamp the sensing optical cable.
4. The high-efficiency subway vibration testing platform according to claim 3, characterized in that, The end of the arc-shaped spring is provided with an outwardly flipped arc guide, and the distance between the two arc guides is smaller than the outer diameter of the sensing optical cable.
5. The high-efficiency subway vibration testing platform according to claim 4, characterized in that, The C-shaped fixing part, the arc-shaped spring piece, and the arc-shaped guide part adopt an integrated stainless steel sheet bending structure.
6. The high-efficiency subway vibration testing platform according to claim 3, characterized in that, The C-shaped fixing part is provided with a screw that extends to the outer side of the back.
7. The high-efficiency subway vibration testing platform according to claim 6, characterized in that, The subway tracks and track slabs are provided with threaded holes corresponding to screws on their sides.
8. The high-efficiency subway vibration testing platform according to claim 1, characterized in that, The sensing optical cable extends along the length of the subway track.
9. The high-efficiency subway vibration testing platform according to claim 1, characterized in that, The sensing optical cables are distributed on one side of the subway track and on both sides of the track slab.
10. The high-efficiency subway vibration testing platform according to claim 1, characterized in that, The sensing optical cable contains at least one sensing optical fiber.