Locomotive brake shoe detection device based on image recognition

Abstract

The utility model discloses a locomotive brake shoe detection device based on image recognition, and relates to the technical field of locomotive brake unit safety detection. Comprising a base; the bottom end of the sliding rail is fixedly connected with the top end of the base; through arrangement of the fixing device, movement of the sliding seat on the sliding rail and cooperation of the insertion rod and the positioning hole, the position of the recognition device can be accurately adjusted, it is ensured that the camera can be aligned with the key part of the locomotive brake shoe for image acquisition, the detection accuracy is improved, and through cooperation of the clamping seat and the rotating rod and rotation adjustment of the driving rod, the detection accuracy is improved. The recognition device can be adjusted at multiple angles, adapts to the mounting positions and angles of different locomotive brake shoes, completely covers a detection area, is tight and reliable in connection among all parts, cannot generate vibration due to the running of a locomotive and cannot deviate due to the shaking of the connecting part of the whole device, can stably work for a long time, and reduces the maintenance cost and the downtime.

Description

Technical Field

[0001] The utility model relates to the technical field of safety detection of locomotive brake units, in particular to a locomotive brake shoe detection device based on image recognition. Background Art

[0002] With the continuous development of the railway transportation industry, the safe operation of locomotives is of paramount importance. As a key component of the locomotive braking system, the condition of locomotive brake shoes directly affects the braking performance and driving safety of the locomotive. Traditional locomotive brake shoe inspection methods rely primarily on manual inspections, which are not only inefficient but also prone to missed inspections and false detections.

[0003] In recent years, image recognition technology has been widely used in various fields. In terms of locomotive brake shoe detection, detection devices based on image recognition have the advantages of fast detection speed, high accuracy, and real-time monitoring, and have become a research hotspot. However, existing locomotive brake shoe detection devices based on image recognition still have some problems in practical applications. On the one hand, the existing detection devices are not flexible enough in position adjustment and angle adjustment, making it difficult to accurately align the key parts of the locomotive brake shoe for image acquisition, affecting the accuracy of the detection. On the other hand, under different lighting conditions, the quality of image acquisition is difficult to guarantee and is easily interfered by external factors, reducing the stability of the detection. In addition, the existing detection devices are easily affected by vibration during the operation of the locomotive, resulting in loose connections between the various components and offsets, affecting the reliability of the detection results, and increasing maintenance costs and downtime.

[0004] In order to solve the above problems, the utility model proposes a locomotive brake shoe detection device based on image recognition, which aims to improve the accuracy, stability and reliability of detection, reduce maintenance costs and downtime, and provide strong guarantee for the safe operation of locomotives. Utility Model Content

[0005] The top end of the sliding panel also is connected with the upper end of the sliding panel, and the bottom end of the sliding panel is connected with the upper end of the sliding panel.

[0006] Preferably, the inner wall of the sliding seat is slidably connected to the outer wall of the slide rail, a positioning hole is formed in the wall of the slide rail, the outer wall of the insertion rod is slidably connected to the inner wall of the positioning hole, and the top end of the push spring is fixedly connected to the outer wall of the sliding block. The sliding seat moves on the slide rail to adjust the position of the identification device. When the sliding seat moves to the appropriate position, the insertion rod is released. The insertion rod, under the action of the push spring, moves back to the positioning hole in the slide rail wall, thereby fixing the position of the sliding seat and completing the adjustment of the identification device on the slide rail.

[0007] Preferably, the end of the return spring away from the limiting rod is fixedly connected to the outer wall of the card holder, and the outer wall of the limiting rod is slidably connected to the inner wall of the limiting tooth. Pulling the limiting rod out of contact with the limiting tooth allows the card holder to rotate on the rotating rod, completing the direction adjustment of the identification device. Under the action of the return spring, the limiting rod inserts into the limiting tooth, achieving locking.

[0008] Preferably, a drive rod is rotatably connected to the inner wall of the top of the holder, and a latch is slidably connected to the outer wall of the holder. A limit hole is defined in the wall of the drive rod, and the outer wall of the latch is slidably connected to the inner wall of the limit hole. The drive rod can rotate on the holder, thereby driving the fixed frame of the recognition device to rotate, thereby adjusting the recognition angle of the recognition device.

[0009] Preferably, the identification device includes a mounting bracket, a camera fixedly connected to the outer wall of the mounting bracket, a fill light symmetrically fixedly connected to the top of the mounting bracket, and a baffle rotatably connected to the outer wall of the mounting bracket. The outer wall of the mounting bracket is fixedly connected to the outer wall of the drive rod, and the outer wall of the mounting bracket is slidably connected to the inner wall of the holder. The camera is used to capture images of the locomotive brake shoe and transmit them to an external industrial computer for analysis and judgment via the Internet of Things. The fill light provides illumination for image capture in low light conditions. The baffle is made of acrylic and does not affect the camera's recording. The baffle provides a certain degree of protection to prevent debris and foreign objects from splashing and damaging the camera and fill light during locomotive operation.

[0010] By collecting and labeling data in both laboratory and field environments, we obtain a large number of high-quality image datasets of train brake shoe closed and unclosed states. These datasets are stored on an external industrial computer and cleaned and pre-processed using professional image processing algorithms.

[0011] The closed state of the HXD2 locomotive's brake shoe is detected by a camera. For a dataset of images of train brake shoe closed and unclosed states, a deep learning model for detecting the closed state of train brake shoes is established based on deep learning algorithms for target detection, such as Faster R-CNN, YOLOv5, and RetinaNet, combined with network structures such as convolutional neural networks (CNN) and residual networks (ResNet). Target tracking technology is used to determine the position of the train brake shoe in real time. The model structure and parameters, including loss function, optimizer, and learning rate, are optimized based on actual application requirements. A GPU cluster is used to train and verify the model, enabling real-time image detection and rapid judgment and alarm of the closed state of the train brake shoe. The detection results are transmitted using IoT technology to enable remote monitoring and analysis of the data.

[0012] The judgment situation is as follows: when the locomotive is running at a speed of 3-5km / h, it is determined whether the brake shoes are locked abnormally; when the locomotive is running at a low speed, if the number of brake shoes locked is greater than 16 or all brake shoes are locked during driving, the alarm module will not be triggered, and it will be determined that the driver is braking during driving, which is a normal driving braking operation. If the number of brake shoes locked is less than 16 during driving, the alarm module will be triggered, and an abnormal prompt will be given to the staff, and the vehicle model and license plate will be identified and detected. The video will be stored in real time and can be played back for viewing.

[0013] The beneficial effects of the utility model are as follows:

[0014] 1. The utility model can accurately adjust the position of the identification device by setting a fixing device, moving the sliding seat on the slide rail, and cooperating with the insertion rod and the positioning hole, ensuring that the camera can be aimed at the key parts of the locomotive brake shoe for image acquisition, thereby improving the accuracy of detection. The cooperation between the card seat and the rotating rod and the rotation adjustment of the driving rod enable the identification device to be adjusted at multiple angles to adapt to the installation position and angle of different locomotive brake shoes, fully covering the detection area. The connection between the various components is tight and reliable, and there will be no vibration due to the running of the locomotive, and no shaking at the connection of the overall device will cause deviation. It can work stably for a long time, reducing maintenance costs and downtime.

[0015] 2. This new system uses a recognition device, camera, and fill light to obtain clear brake shoe images under varying lighting conditions, ensuring accurate detection. Furthermore, the protective barrier reduces interference from external factors on image acquisition, ensuring detection stability.

[0016] 3. The utility model collects and transmits brake shoe images through an identification device, and uses the Internet of Things technology to send the detection results to realize remote monitoring and analysis of data. It can record the train number, entry time, specific position of the brake wheels and the number of brake wheels of the brake-engaging locomotive. If the number of brake shoes locked is greater than 16 or all brake shoes are locked during driving, the alarm module will not be triggered, and it will be determined that the driver is braking during driving, which is a normal driving braking operation. If the number of brake shoes locked is less than 16 during driving, the alarm module will be triggered to prompt the staff of the abnormality. The entire process does not require human visual inspection of the image record, which reduces the workload of the staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is the main view of the utility model;

[0018] Figure 2 It is a structural diagram of the fixing device of the utility model;

[0019] Figure 3 It is a structural diagram of the identification device of the utility model;

[0020] Figure 4 This utility model Figure 2 A magnified view of the structure at point A.

[0021] In the figure: 1. Base; 2. Rubber column; 3. Slide rail; 4. Positioning hole; 5. Fixing device; 51. Sliding seat; 52. Card seat; 53. Sliding block; 54. Insert rod; 55. Push spring; 56. Drive rod; 57. Limiting hole; 58. Latch; 59. Rotating rod; 510. Limiting tooth; 512. Limiting rod; 513. Reset spring; 6. Identification device; 61. Fixing bracket; 62. Camera; 63. Fill light; 64. Baffle. DETAILED DESCRIPTION

[0022] The present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments. The embodiments of the present invention are provided for purposes of illustration and description and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those skilled in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present invention and to enable those skilled in the art to understand the present invention and design various embodiments with various modifications suitable for specific applications.

[0023] Example:

[0024] See also Figure 1 - Figure 4The utility model provides a technical solution: a locomotive brake shoe detection device based on image recognition, comprising: a base 1; a slide rail 3, the bottom end of the slide rail 3 is fixedly connected to the top end of the base 1; a rubber column 2, the top end of the rubber column 2 is fixedly connected to the bottom end of the base 1, and the rubber column 2 is arranged at the four corners of the base 1; a fixing device 5, the outer wall and inner wall of the fixing device 5 are slidably connected to the outer wall of the slide rail 3; an identification device 6, the identification device 6 is arranged at the top end of the fixing device 5; the fixing device 5 includes a sliding seat 51, the outer wall of the sliding seat 51 is fixedly connected with a rotating rod 59, the outer wall of the rotating rod 59 is rotatably connected with a clamping seat 52, the outer wall of the clamping seat 52 is slidably connected to a limit rod 512, the outer wall of the limit rod 512 is fixedly connected to a return spring 513, the outer wall of the rotating rod 59 is fixedly connected to a limit tooth 510, the outer wall of the sliding seat 51 is symmetrically fixedly connected with a sliding block 53, the inner wall of the sliding block 53 is fixedly connected with an insertion rod 54, and the top of the insertion rod 54 is fixedly connected with a push spring 55.

[0025] The inner wall of the sliding seat 51 is slidably connected to the outer wall of the sliding rail 3. A positioning hole 4 is opened in the wall of the sliding rail 3. The outer wall of the insertion rod 54 is slidably connected to the inner wall of the positioning hole 4. The top of the push spring 55 is fixedly connected to the outer wall of the sliding block 53.

[0026] One end of the return spring 513 away from the limiting rod 512 is fixedly connected to the outer wall of the clamping seat 52 , and the outer wall of the limiting rod 512 is slidably connected to the inner wall of the limiting tooth 510 .

[0027] The top inner wall of the card holder 52 is rotatably connected to a driving rod 56 , and the outer wall of the card holder 52 is slidably connected to a latch 58 . A limiting hole 57 is provided in the wall of the driving rod 56 , and the outer wall of the latch 58 is slidably connected to the inner wall of the limiting hole 57 .

[0028] The identification device 6 includes a mounting bracket 61, a camera 62 fixedly connected to the outer wall of the mounting bracket 61, a fill light 63 symmetrically fixedly connected to the top of the mounting bracket 61, and a baffle 64 rotatably connected to the outer wall of the mounting bracket 61. The outer wall of the mounting bracket 61 is fixedly connected to the outer wall of the driving rod 56 and is slidably connected to the inner wall of the card holder 52.

[0029] Working principle:

[0030] When in use, the entire device is set on both sides of the locomotive track through the base 1, and the rubber column 2 at the bottom end of the base 1 plays a shock-absorbing and buffering role. Through the fixing device 5, when it is necessary to adjust the position, the insertion rod 54 is pulled out of the positioning hole 4, and the position of the identification device can be adjusted by pushing the sliding seat 51 to move on the slide rail 3. When the sliding seat 51 moves to the appropriate position, the insertion rod 54 is released. The insertion rod 54 moves and resets under the action of the push spring 55, so that the insertion rod 54 is inserted into the positioning hole 4 in the wall of the slide rail 3, thereby fixing the position of the sliding seat 51, thereby adjusting the identification position 6;

[0031] When the recognition device 6 above the card seat 52 needs to adjust the angle direction, the limit rod 512 is pulled out of contact with the limit tooth 510, so that the card seat 52 can rotate on the rotating rod 59. When the direction is adjusted, the limit rod 512 is inserted into the limit tooth 510 under the action of the return spring 513 to achieve locking. The pin 58 is pulled upward to disengage it from the limit hole 57 on the drive rod 56. At this time, the drive rod 56 can rotate on the card seat 52, thereby driving the fixing frame 61 in the recognition device 6 to rotate. When the adjustment is completed, the pin 58 is inserted into the corresponding limit hole 57, thereby completing the adjustment of the recognition angle of the recognition device 6. When the fixing device 5 is adjusted, the camera 62 on the fixing frame 61 is used to capture images of the locomotive brake shoe, the fill light 63 provides lighting for image capture when the light is insufficient, and the baffle 64 connected to the outside of the fixing frame 61 can play a certain protective role.

[0032] Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without making any creative efforts should fall within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described and explained in this utility model shall be implemented in accordance with conventional means in the field unless otherwise specified or limited.

Claims

1. A locomotive brake shoe detection device based on image recognition, characterized in that: include: Base (1); A slide rail (3), the bottom end of the slide rail (3) being fixedly connected to the top end of the base (1); A rubber column (2), the top end of the rubber column (2) is fixedly connected to the bottom end of the base (1), and the rubber column (2) is arranged at the four corners of the base (1); A fixing device (5), wherein the outer wall and the inner wall of the fixing device (5) are slidably connected to the outer wall of the slide rail (3); an identification device (6), the identification device (6) being arranged on the top of the fixing device (5); The fixing device (5) comprises a sliding seat (51), the outer wall of the sliding seat (51) is fixedly connected to a rotating rod (59), the outer wall of the rotating rod (59) is rotatably connected to a clamping seat (52), the outer wall of the clamping seat (52) is slidably connected to a limiting rod (512), the outer wall of the limiting rod (512) is fixedly connected to a return spring (513), the outer wall of the rotating rod (59) is fixedly connected to a limiting tooth (510), the outer wall of the sliding seat (51) is symmetrically fixedly connected to a sliding block (53), the inner wall of the sliding block (53) is fixedly connected to an insertion rod (54), and the top end of the insertion rod (54) is fixedly connected to a push spring (55).

2. The locomotive brake shoe detection device based on image recognition according to claim 1, characterized in that: The inner wall of the sliding seat (51) is slidably connected to the outer wall of the sliding rail (3), a positioning hole (4) is provided in the wall of the sliding rail (3), the outer wall of the insertion rod (54) is slidably connected to the inner wall of the positioning hole (4), and the top end of the pushing spring (55) is fixedly connected to the outer wall of the sliding block (53).

3. The locomotive brake shoe detection device based on image recognition according to claim 1, characterized in that: One end of the return spring (513) away from the limiting rod (512) is fixedly connected to the outer wall of the clamping seat (52), and the outer wall of the limiting rod (512) is slidably connected to the inner wall of the limiting tooth (510).

4. The locomotive brake shoe detection device based on image recognition according to claim 3, characterized in that: The top inner wall of the card seat (52) is rotatably connected to a driving rod (56), the outer wall of the card seat (52) is slidably connected to a latch (58), a limiting hole (57) is provided in the wall of the driving rod (56), and the outer wall of the latch (58) is slidably connected to the inner wall of the limiting hole (57).

5. The locomotive brake shoe detection device based on image recognition according to claim 1, characterized in that: The identification device (6) comprises a fixing frame (61), the outer wall of the fixing frame (61) is fixedly connected to a camera (62), the top of the fixing frame (61) is symmetrically fixedly connected to a fill light (63), and the outer wall of the fixing frame (61) is rotatably connected to a baffle (64).

6. The locomotive brake shoe detection device based on image recognition according to claim 5, characterized in that: The outer wall of the fixing frame (61) is fixedly connected to the outer wall of the driving rod (56), and the outer wall of the fixing frame (61) is slidably connected to the inner wall of the clamping seat (52).

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