Steel rail contour acquisition device based on structured light scanning

Abstract

The utility model relates to a steel rail contour acquisition device based on structured light scanning. The steel rail contour acquisition device comprises two structured light scanners, a telescopic bracket and an acquisition controller, the two structured light scanners are respectively connected with an adjusting flange, and the two adjusting flanges are respectively arranged at the two ends of the telescopic bracket; the telescopic support is mounted on the acquisition controller and arranged above a steel rail, and the two structured light scanners are arranged above the inner side of the steel rail and enable laser rays to be perpendicular to the steel rail; an industrial personal computer and a scanner controller are arranged in the acquisition controller, steel rail contour data are stored in the industrial personal computer in real time, and the acquisition controller is externally connected with a power supply and an encoder signal. The modular disassembly-type LED lamp has the advantages of modular disassembly, light weight and portability; the device can be carried on any platform, is provided with a plurality of adaptive devices, can automatically collect steel rail contour data only by supplying power to the detection device, inputting coding meter signals and remotely controlling through devices such as a tablet personal computer, and is high in practical value.

Description

Technical Field

[0001] The utility model belongs to the technical field of automatic detection devices, is applied to the rail transportation industry, and particularly relates to a rail profile acquisition device based on structured light scanning. Background Art

[0002] At present, my country's railway operating mileage has exceeded 160,000 kilometers. Rails are an important component of the railway system and are in direct contact with train wheels. To ensure the safe operation of the railway system, rail damage detection is one of the most important inspection items for railway operation and maintenance departments.

[0003] With the continuous development of high-speed and heavy-load railways, rail wear has become an increasingly serious problem. Traditionally, rail profile measurements have mostly been performed using rail wear gauges. These are lightweight and easy to carry, but require manual contact measurement, which is prone to human error and has low detection efficiency. With the rapid development of computer and vision technologies, non-contact measurement technology has been widely used. Currently, contour measurement systems based on line structured light have been extensively researched and applied in the industrial field, offering the advantages of high precision and efficiency. For rail profile detection, there are also full-section rail measurement systems based on line structured light. However, since these acquisition devices involve technical fields such as industrial design, structured light scanning, and wireless communication control, they are typically large and complex in structure, making them inconvenient to transport and disassemble. Therefore, it is necessary to design a lightweight, modular rail profile acquisition device. Summary of the Invention

[0004] In order to solve the technical problems existing in the known technology, the utility model provides a rail profile acquisition device based on structured light scanning, which has the characteristics of lightweight, modular, disassembly and assembly. It is mainly used for collecting rail profile point cloud data and rail profile detection. It can obtain point cloud data of the top surface and the inner side of the rail for analyzing rail wear.

[0005] The utility model includes the following technical solutions:

[0006] A rail profile acquisition device based on structured light scanning comprises two structured light scanners, a telescopic bracket, and an acquisition controller. The two structured light scanners are each connected to an adjustment flange, mounted on either end of the telescopic bracket. The telescopic bracket is mounted on the acquisition controller and positioned above the rail. The two structured light scanners are positioned above the inner side of the rail, with their laser beams perpendicular to the rail. The acquisition controller houses an industrial computer and scanner controller, storing rail profile data in real time. The acquisition controller receives external power and encoder signals. The laser beams of the structured light scanners completely cover the top and inner side of the rail, acquiring point cloud data of the rail profile, including the top surface, inner side of the rail head, rail waist, and rail base.

[0007] Furthermore, the acquisition controller includes a WIFI communication module, an industrial computer, and two scanner controllers, each of which controls a structured light scanner; a mounting platform for horizontally mounting a telescopic bracket is provided in the middle of the acquisition controller.

[0008] Furthermore, the industrial computer is connected to two scanner controllers via two gigabit network ports respectively, and the scanner controller is connected to the structured light scanner via a dedicated data line.

[0009] Furthermore, an encoder signal input interface and a power input interface are provided on the side wall below the installation platform. The acquisition controller triggers the structured light scanner to continuously and evenly acquire rail profile data by receiving the signal from the encoder.

[0010] Furthermore, the signal inputted by the encoder signal input interface is first connected to the industrial computer, and then synchronously triggers two structured light scanners to collect rail profile data.

[0011] Furthermore, the WIFI communication module connects the acquisition controller to a desktop computer, laptop computer, tablet computer or smart phone, thereby remotely controlling the acquisition of the device.

[0012] Furthermore, the mounting platform and the telescopic bracket can be quickly assembled or disassembled through a quick buckle.

[0013] Furthermore, the adjusting flange can adjust the angle between it and the telescopic bracket.

[0014] Furthermore, the acquisition controller is installed on a mobile platform or a mobile cart moving along the track, and an encoder is installed on the mobile platform or the mobile cart.

[0015] Furthermore, the collection device is suitable for rails of 43kg / m to 75kg / m.

[0016] The advantages and positive effects of this utility model are:

[0017] 1. This device is modular and lightweight, making it portable. The two structured light scanners weigh approximately 3 kg, the bracket approximately 2 kg, and the acquisition controller no more than 15 kg, for a total weight of no more than 20 kg.

[0018] 2. The utility model can be mounted on any platform and is compatible with a wide range of devices. It only needs to power the detection equipment and input the encoder signal. It can be remotely controlled by devices such as tablet computers to realize automatic collection of rail profile data. It has obvious practical value in the rail transit detection industry.

[0019] 3. The utility model has strong adaptability and a wide range of applications; by adjusting the bracket length and flange angle, it can be applied to various types of rails from 43kg / m to 75kg / m.

[0020] 4. The utility model has high precision and high efficiency. The accuracy of the collected point cloud is better than 0.1mm, and the scanning frequency is up to 3000Hz, that is, up to 3000 rail contours can be collected per second. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is the overall three-dimensional structural diagram of the utility model;

[0022] Figure 2 This is a three-dimensional diagram of the utility model after being equipped with a mobile platform;

[0023] In the figure, 1-structured light scanner; 2-adjustment flange; 3-telescopic bracket; 4-acquisition controller; 5-power input interface; 6-encoder signal input interface; 7-installation platform; 8-mobile platform. DETAILED DESCRIPTION

[0024] In order to further disclose the content, features and effects of the present invention, the following examples are given and described in detail with reference to the accompanying drawings. In the description of the following embodiments, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like, indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing this patent and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting this patent.

[0025] In the description of the following embodiments, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," "connected," and "set" should be understood in a broad sense. For example, they may refer to fixed connection or set, detachable connection or set, or integral connection or set. Those skilled in the art will understand the specific meanings of the above terms in this patent based on specific circumstances.

[0026] Example: See attached Figure 1-2 A rail profile acquisition device based on structured light scanning includes two structured light scanners 1, a telescopic bracket 3 and an acquisition controller 4; and is suitable for rails of 43kg / m to 75kg / m.

[0027] The two structured light scanners 1 are each connected to an adjustment flange 2, mounted at either end of a telescopic bracket 3. The adjustment flanges 2 can adjust the angle between them and the bracket 3. The bracket 3 is mounted on a collection controller 4 and positioned above the rail. The two structured light scanners 1 are positioned above the inside of the rail, with their laser beams perpendicular to the rail. The collection controller 4 houses an industrial computer and scanner controller, which stores rail profile data in real time. The collection controller 4 receives external power and encoder signals. The laser beam of the structured light scanner 1 completely covers the top and inside of the rail, capturing point cloud data of the rail profile, including the top, inside of the rail head, rail waist, and rail base.

[0028] The acquisition controller 4 includes a Wi-Fi communication module, an industrial computer, and two scanner controllers, each of which controls a structured light scanner 1. A mounting platform 7 is located in the center of the acquisition controller 4 for horizontally mounting the telescopic bracket 3. The mounting platform 7 and the telescopic bracket 3 are quickly assembled and disassembled using quick-release buckles. The industrial computer is connected to the two scanner controllers via two Gigabit Ethernet ports, and the scanner controllers are connected to the structured light scanner 1 via dedicated data cables.

[0029] The side wall below the mounting platform 7 is provided with an encoder signal input interface and a power input interface. The acquisition controller 4 triggers the structured light scanners 1 by receiving the encoder signal, enabling continuous and uniform acquisition of rail profile data. The signal input from the encoder signal input interface is first connected to the industrial computer, which then synchronously triggers the two structured light scanners 1 to acquire rail profile data.

[0030] The WIFI communication module connects the acquisition controller 4 to a desktop computer, laptop, tablet computer or smart phone, thereby remotely controlling the acquisition of the device. Through the WIFI communication module, a tablet computer or other device can be used to remotely log in to the industrial computer for convenient control.

[0031] The acquisition controller 4 is mounted on a mobile platform 8 or a mobile car moving along the track, and the mobile platform 8 (in this example Figure 2 When the mobile platform 8 or the mobile trolley moves, the encoder inputs a uniform pulse signal to the device through the encoder, triggering the structured light scanner 1 to collect uniform rail profile data.

[0032] Although the preferred embodiments of the present invention have been described above, the present invention is not limited to the above-mentioned specific embodiments. The above-mentioned specific embodiments are merely illustrative and not restrictive. Under the guidance of the present invention, those skilled in the art can devise various forms without departing from the spirit of the present invention and the scope of protection of the claims. All such forms fall within the scope of protection of the present invention.

Claims

1. A rail profile acquisition device based on structured light scanning, characterized by: The system comprises two structured light scanners, a telescopic bracket and an acquisition controller; the two structured light scanners are respectively connected to an adjustment flange, and the two adjustment flanges are respectively installed at both ends of the telescopic bracket; the telescopic bracket is installed on the acquisition controller and arranged above the rail, and the two structured light scanners are arranged above the inner side of the rail and the laser line is perpendicular to the rail; the acquisition controller is equipped with an industrial computer and a scanner controller, and the rail profile data is stored in real time in the industrial computer. The acquisition controller is connected to the power supply and encoder signal from the outside.

2. The rail profile acquisition device based on structured light scanning according to claim 1, characterized in that: The acquisition controller includes a WIFI communication module, an industrial computer, and two scanner controllers. The two scanner controllers respectively control a structured light scanner. A mounting platform for horizontally mounting a telescopic bracket is provided in the middle of the acquisition controller.

3. The rail profile acquisition device based on structured light scanning according to claim 2, characterized in that: The industrial computer is connected to the two scanner controllers via two gigabit network ports respectively, and the scanner controller is connected to the structured light scanner via a dedicated data line.

4. The rail profile acquisition device based on structured light scanning according to claim 2, characterized in that: An encoder signal input interface and a power input interface are provided on the side wall below the installation platform.

5. The rail profile acquisition device based on structured light scanning according to claim 4, characterized in that: The signal input from the encoder signal input interface is first connected to the industrial computer, and then synchronously triggers two structured light scanners to collect rail profile data.

6. The rail profile acquisition device based on structured light scanning according to claim 2, characterized in that: The WIFI communication module connects the acquisition controller to a desktop computer, laptop computer, tablet computer or smart phone.

7. The rail profile acquisition device based on structured light scanning according to claim 2, characterized in that: The installation platform and the telescopic bracket can be quickly assembled or disassembled through a quick buckle.

8. The rail profile acquisition device based on structured light scanning according to claim 1, characterized in that: The adjusting flange can adjust the angle between it and the telescopic bracket.

9. The rail profile acquisition device based on structured light scanning according to claim 1, characterized in that: The acquisition controller is installed on a mobile platform or a mobile car moving along the track.

10. The rail profile acquisition device based on structured light scanning according to any one of claims 1 to 9, characterized in that: The collecting device is suitable for steel rails of 43kg / m to 75kg / m.

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