A method of detecting foreign matter in a brake pole shoe and related components

Abstract

The application discloses a brake pole shoe foreign matter detection method and related components, and relates to the field of rail transit. The working state of a magnetic rail brake and the distance between brake pole shoes in the magnetic rail brake and a rail are determined, and then whether the bottom of the brake pole shoes has foreign matter is automatically judged according to the working state of the magnetic rail brake and the distance between the brake pole shoes and the rail. Therefore, manual checking is no longer needed, the efficiency of foreign matter detection is greatly improved, the limitations of human eyesight are overcome, and the accuracy of foreign matter detection is improved.

Description

Technical Field

[0001] This invention relates to the field of rail transportation, and in particular to a method for detecting foreign objects in brake pole shoes and related components. Background Technology

[0002] Currently, rail vehicle braking methods are mainly divided into adhesion braking and non-adhesion braking. The braking force generated by adhesion braking is limited by the vehicle's adhesion conditions, which represent the limit of wheel-rail braking. When a vehicle is traveling at high speed or requires rapid braking, non-adhesion braking is usually configured to improve the vehicle's braking capacity, enabling high-speed rail vehicles to meet the requirements for rapid and safe stopping. Magnetic rail braking is a type of non-adhesion braking. Magnetic rail braking involves magnetic rail brakes installed on the rail vehicle adhering to the track, relying on the friction generated by the rail vehicle sliding on the track for braking.

[0003] The environment near the track is usually open and complex. When magnetic track braking is applied, the magnetic track brake has a strong electromagnetic attraction, which makes it easy for metallic impurities on or near the track surface to adhere to the bottom of the brake shoes in the magnetic track brake. As the rail vehicle runs for a long time, too many foreign objects will accumulate on the bottom of the brake shoes, affecting the normal friction braking between the brake shoes and the track. In severe cases, this will lead to a significant reduction in the braking performance of the rail vehicle, which in turn will greatly reduce the safety of the rail vehicle. Currently, it is still necessary to manually check whether there are foreign objects on the bottom of the brake shoes. This is not only inefficient, but also has the limitations of human eyes. Generally speaking, the accuracy of judgment by human eyes is not high.

[0004] In view of the above-mentioned technical problems, finding a way to overcome these technical problems is a problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0005] The purpose of this invention is to provide a method and related components for detecting foreign objects in brake pole shoes. Based on the current working state of the magnetic track brake and the distance between the brake pole shoes and the track, the method automatically determines whether there are foreign objects at the bottom of the brake pole shoes, eliminating the need for manual inspection. This greatly improves the efficiency of foreign object detection and overcomes the limitations of human visual judgment, thereby increasing the accuracy of foreign object detection.

[0006] To address the aforementioned technical problems, this invention provides a method for detecting foreign objects in brake pole shoes, applicable to rail vehicles, wherein the rail vehicle includes a magnetic rail brake, and the method includes:

[0007] Determine the current operating state of the magnetic track brake, which includes a brake release state and a brake application state;

[0008] Determine the distance between the brake pole shoe in the magnetic track brake and the track;

[0009] Based on the current working state of the magnetic track brake and the distance between the brake shoe and the track, determine whether there are foreign objects at the bottom of the brake shoe.

[0010] Preferably, a distance detection device is provided between adjacent brake pole shoes to determine the distance between the brake pole shoes in the magnetic track brake and the track, including:

[0011] Obtain the distance between the distance detection module and the track as detected by each of the distance detection modules;

[0012] Based on the current operating state of the magnetic track brake and the distance between the brake shoe and the track, determine whether there are foreign objects at the bottom of the brake shoe, including:

[0013] The presence of foreign objects at the bottom of the brake shoe is determined based on the current operating state of the magnetic track brake and the distance between each distance detection module and the track.

[0014] Preferably, determining whether there are foreign objects at the bottom of the brake shoe based on the current operating state of the magnetic track brake and the distance between the brake shoe and the track includes:

[0015] If the current working state of the magnetic track brake is the braking application state, determine whether the distance is not less than the first preset distance;

[0016] If so, it is determined that there is a foreign object at the bottom of the brake shoe;

[0017] If not, it is determined that there are no foreign objects at the bottom of the brake shoe.

[0018] Preferably, after determining that there is a foreign object at the bottom of the brake shoe, the method further includes:

[0019] Determine whether the brake shoe has been found to have a foreign object at the bottom of the brake shoe a preset number of times in the braking state before the current determination that the brake shoe has a foreign object at the bottom;

[0020] If so, the control prompt module will issue a prompt.

[0021] Preferably, determining whether there are foreign objects at the bottom of the brake shoe based on the current operating state of the magnetic track brake and the distance between the brake shoe and the track includes:

[0022] If the current working state of the magnetic track brake is the brake release state, determine whether the distance is not greater than the second preset distance;

[0023] If so, it is determined that there is a foreign object at the bottom of the brake shoe;

[0024] If not, it is determined that there are no foreign objects at the bottom of the brake shoe.

[0025] Preferably, before determining the current operating state of the magnetic track brake, the method further includes:

[0026] Determine whether the braking function of the magnetic track brake is normal.

[0027] If so, proceed to the step of determining the current working state of the magnetic track brake;

[0028] If not, the control prompt module will issue a prompt.

[0029] Preferably, the rail vehicle further includes a cleaning device, and the brake pads are multiple; after determining that there is a foreign object on the bottom of the brake pad, the device further includes:

[0030] When the current working state of the magnetic track brake is determined to be the brake release state, the cleaning device is controlled to clean the bottom of the brake shoe.

[0031] Preferably, the cleaning device includes a controllable valve and a compressed air pipe disposed at the bottom of the brake shoe. One end of the controllable valve is connected to the main air duct of the rail vehicle, and the other end is connected to each of the compressed air pipes respectively. Each of the compressed air pipes is provided with a ventilation hole.

[0032] Controlling the cleaning device to clean the bottom of the brake pole shoe includes:

[0033] The controllable valve is controlled to open within a preset time period so that compressed air in the main air duct can clean the bottom of the brake shoe through the compressed air pipeline.

[0034] Preferably, after the cleaning device cleans the bottom of the brake shoe, the method further includes:

[0035] Based on the distance between the brake shoe and the track, determine whether there are foreign objects at the bottom of the brake shoe;

[0036] If so, the control prompt module will issue a prompt.

[0037] To address the aforementioned technical problems, the present invention also provides a foreign object detection device for brake pole shoes, comprising:

[0038] Memory, used to store computer programs;

[0039] A processor, configured to execute the computer program to implement the steps of the brake pole shoe foreign object detection method as described in any of the preceding claims.

[0040] To solve the above-mentioned technical problems, the present invention also provides a rail vehicle, including a magnetic track brake and a foreign object detection device for the brake pole shoe as described above, wherein the magnetic track brake is connected to the foreign object detection device for the brake pole shoe.

[0041] This invention provides a method for detecting foreign objects in brake pads. By determining the current working state of the magnetic track brake and the distance between the brake pads and the track, the method automatically determines whether there are foreign objects at the bottom of the brake pads. This eliminates the need for manual inspection, thus greatly improving the efficiency of foreign object detection and overcoming the limitations of human visual judgment, thereby increasing the accuracy of foreign object detection.

[0042] Based on this, the present invention also provides a rail vehicle and a foreign object detection device for brake pole shoes, which have the same beneficial effects as the above methods. Attached Figure Description

[0043] To more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the prior art and embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0044] Figure 1 A flowchart of a method for detecting foreign objects in a brake pole shoe provided in an embodiment of the present invention;

[0045] Figure 2 This is a structural diagram of a magnetic track brake provided in an embodiment of the present invention;

[0046] Figure 3 A structural diagram of a foreign object detection system for brake pole shoes provided in an embodiment of the present invention;

[0047] Figure 4 A structural diagram of a rail vehicle provided in an embodiment of the present invention;

[0048] Figure 5 This is a structural diagram of a foreign object detection device for brake pads provided in an embodiment of the present invention. Detailed Implementation

[0049] The core of this invention is to provide a method and related components for detecting foreign objects in brake pole shoes. Based on the current working state of the magnetic track brake and the distance between the brake pole shoes and the track, the method automatically determines whether there are foreign objects at the bottom of the brake pole shoes, eliminating the need for manual inspection. This greatly improves the efficiency of foreign object detection and overcomes the limitations of human visual judgment, thereby increasing the accuracy of foreign object detection.

[0050] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0051] Please refer to Figure 1 , Figure 1 A flowchart of a foreign object detection method for brake pole shoes provided in this embodiment of the invention, applied to a rail vehicle, the rail vehicle including a magnetic rail brake, the method includes the following steps:

[0052] S11: Determine the current operating state of the magnetic track brake, which includes the brake release state and the brake application state;

[0053] S12: Determine the distance between the brake pole shoe in the magnetic track brake and the track;

[0054] S13: Determine whether there are foreign objects at the bottom of the brake pads based on the current working status of the magnetic track brake and the distance between the brake pads and the track.

[0055] In specific implementation, the execution entity for steps S11, S12, and S13 is the magnetic track brake processor. The processor performs these steps in real time. For example, it can perform these steps according to a preset cycle, or it can perform these steps when the working state of the magnetic track brake changes. Regarding determining the current working state of the magnetic track brake in step S11, this can be achieved by receiving a signal from the magnetic track brake. Based on this signal, the processor can determine the current working state of the magnetic track brake, but this method is not limited to the above. The working states of the magnetic track brake include a brake release state and a brake application state. In the brake application state, the processor controls the electromagnet coil in the magnetic track brake to be energized, causing the brake shoes in the magnetic track brake to contact the track, thereby applying braking force through the sliding friction between the brake shoes and the track. Conversely, in the brake release state, the processor controls the electromagnet coil in the magnetic track brake to be de-energized, causing the brake shoes in the magnetic track brake to separate from the track under the traction of the spring.

[0056] Regarding step S12, it should be noted that there is no particular limitation on the number of brake shoes in a magnetic track brake. Typically, a magnetic track brake has multiple brake shoes. Determining the distance between the brake shoes and the track can be done by determining the distance between any one or more brake shoes and the track. Specifically, determining the distance between the brake shoes and the track can be achieved using a distance sensor, as detailed in the following embodiments.

[0057] In step S13, based on the current operating state of the magnetic track brake and the distance between the brake shoe and the track, it is determined whether there are foreign objects at the bottom of the brake shoe. The execution order of determining the current operating state of the magnetic track brake in step S11 and determining the distance between the brake shoe and the track in step S12 is not particularly limited; step S11 can precede step S12, or vice versa. Furthermore, the method for determining whether there are foreign objects at the bottom of the brake shoe based on the distance between the brake shoe and the track varies depending on the operating state of the magnetic track brake. Specific explanations can be found in the following embodiments.

[0058] The foreign object detection method for brake pads provided in this embodiment determines the current working state of the magnetic track brake and the distance between the brake pads and the track. Based on the current working state of the magnetic track brake and the distance between the brake pads and the track, it automatically determines whether there are foreign objects at the bottom of the brake pads, eliminating the need for manual inspection. This greatly improves the efficiency of foreign object detection and overcomes the limitations of human visual judgment, thus increasing the accuracy of foreign object detection.

[0059] Based on the above embodiments:

[0060] In a preferred embodiment, a distance detection device is provided between adjacent brake pole shoes to determine the distance between the brake pole shoes in the magnetic track brake and the track, including:

[0061] Obtain the distance between the distance detection module and the track as detected by each distance detection module;

[0062] Based on the current operating status of the magnetic track brake and the distance between the brake shoe and the track, determine whether there are any foreign objects at the bottom of the brake shoe, including:

[0063] The presence of foreign objects at the bottom of the brake shoe is determined based on the current operating status of the magnetic track brake and the distance between each distance detection module and the track.

[0064] It should be noted that distance detection devices are installed between adjacent brake shoes. These devices can be installed between all adjacent brake shoes or between some adjacent brake shoes; the number of these devices is not limited. The type of distance detection device is also not limited; for example, it can be an ultrasonic ranging device, a laser ranging device, etc. The specific ranging method used by a particular distance detection device is also not particularly limited. Typically, the distance between each distance detection module and the track differs from the distance between the brake shoes and the track. However, the positions of the distance detection modules between adjacent brake shoes can be manually set. Therefore, the distance between the brake shoes and the track can be indirectly represented by the distance between the distance detection modules and the track. Of course, the distance detected by a single distance detection module can only represent the distance between the two brake shoes adjacent to that module and the track. Therefore, as a preferred embodiment, distance detection devices are installed between all adjacent brake shoes.

[0065] The following embodiments provide a detailed explanation of how to determine whether there are foreign objects at the bottom of the brake shoe based on the current working state of the magnetic track brake and the distance between each distance detection module and the track.

[0066] This embodiment provides a specific method for determining the distance between the brake pole shoe and the track in a magnetic track brake. By setting a distance detection device between adjacent brake pole shoes, the distance between the distance detection module and the track detected by each distance detection module is obtained, and then the distance is used to indirectly characterize the distance between the brake pole shoe and the track. This embodiment is relatively easy to implement.

[0067] As a preferred embodiment, determining whether there are foreign objects at the bottom of the brake pads based on the current operating state of the magnetic track brake and the distance between the brake pads and the track includes:

[0068] If the magnetic track brake is currently in the braking application state, determine whether the distance is not less than the first preset distance;

[0069] If so, it is determined that there is a foreign object at the bottom of the brake shoe;

[0070] If not, then it is determined that there are no foreign objects at the bottom of the brake shoe.

[0071] In specific implementation, the first preset distance should be greater than the distance between the brake shoe and the track when there are no foreign objects at the bottom of the brake shoe and the magnetic track brake is in the braking state. In practical applications, the first preset distance should be reasonably selected. The specific judgment method when the magnetic track brake is in the braking release state can be seen in the following embodiments. The specific method for obtaining the distance between the brake shoe and the track can be seen in the specific description of the above embodiments, which will not be repeated here.

[0072] This embodiment provides a specific method for determining whether there is a foreign object at the bottom of the brake shoe when the magnetic track brake is in the braking application state. The method determines whether there is a foreign object at the bottom of the brake shoe by judging whether the distance is not less than a first preset distance. The implementation is relatively simple.

[0073] In response to certain extreme situations in practical applications, such as when there are stubborn foreign objects on the brake shoes that are difficult to clean using the cleaning device on the rail vehicle, the following embodiments provide a detailed description of the cleaning device. The rail vehicle driver should be promptly notified that some brake shoes require manual cleaning and maintenance.

[0074] In a preferred embodiment, after determining that there is a foreign object at the bottom of the brake shoe, the method further includes:

[0075] Determine whether the brake shoe has been found to contain foreign objects at the bottom for a preset number of consecutive times before the brake is applied.

[0076] If so, the control prompt module will issue a prompt.

[0077] It should be noted that after determining that there is a foreign object at the bottom of the brake shoe while braking is applied, the brake shoe should be disconnected. Before this determination, should there be a preset number of consecutive determinations of foreign objects at the bottom of the brake shoe while braking is applied? This is because a preset number of consecutive determinations of foreign objects at the bottom of the brake shoe while braking is applied indicates that the cleaning of the bottom of the brake shoe during the braking release state has not achieved the desired effect. In other words, the foreign object on the brake shoe is relatively stubborn or happens to be in the cleaning blind spot of the cleaning device. Therefore, a prompt should be issued to the driver of the rail vehicle in a timely manner.

[0078] Furthermore, the specific implementation of the prompt module is not limited; it can be a display in the driver's cab, or an audible alarm, etc. The content of the prompts on the display is also not limited; for example, it could indicate the presence of a foreign object requiring manual handling. Of course, anything that effectively alerts the driver is acceptable, and the settings can be customized according to actual needs in practical applications.

[0079] This embodiment provides a method to deal with certain extreme situations in practical applications. When foreign objects on the brake shoes are stubborn or happen to be in the cleaning blind spot of the cleaning device, the driver of the rail vehicle is promptly alerted that some brake shoes need to be manually cleaned and maintained, thus improving the adaptability of the method to extreme situations.

[0080] As a preferred embodiment, determining whether there are foreign objects at the bottom of the brake pads based on the current operating state of the magnetic track brake and the distance between the brake pads and the track includes:

[0081] If the magnetic track brake is currently in the brake release state, determine whether the distance is not greater than the second preset distance;

[0082] If so, it is determined that there is a foreign object at the bottom of the brake shoe;

[0083] If not, then it is determined that there are no foreign objects at the bottom of the brake shoe.

[0084] It should be noted that the second preset distance should be less than the distance between the brake shoe and the track under normal conditions and when the magnetic track brake is in the brake release state. Normal conditions mean that the braking function of the magnetic track brake is normal. In practical applications, the second preset distance should be reasonably selected according to the actual situation. For the specific method of obtaining the distance between the brake shoe and the track, please refer to the detailed description of the above embodiment, which will not be repeated here.

[0085] This embodiment provides a specific method for determining whether there is a foreign object at the bottom of the brake shoe when the magnetic track brake is in the brake release state. The method determines whether there is a foreign object at the bottom of the brake shoe by judging whether the distance is not greater than a second preset distance. The implementation is relatively simple.

[0086] The prerequisite for applying this method is that the braking function of the magnetic track brake is normal. Therefore, as a preferred embodiment, before determining the current working state of the magnetic track brake, the method further includes:

[0087] Determine if the braking function of the current magnetic track brake is normal;

[0088] If so, proceed to the step of determining the current working state of the magnetic track brake;

[0089] If not, the control prompt module will issue a prompt.

[0090] In specific implementation, determining whether the braking function of the current magnetic track brake is normal can be achieved by the processor receiving a signal from the magnetic track brake and judging whether the braking function is normal based on this signal. However, this method is not limited to this specific approach. Detailed explanations of the prompting module and the specific prompting content can be found in the above embodiments. In this embodiment, when the prompting module is a display, the prompting content can indicate a braking function malfunction; this is merely a preferred embodiment.

[0091] This embodiment determines whether the braking function of the magnetic track brake is normal before determining the current working state of the magnetic track brake. Only when the braking function of the magnetic track brake is normal will the step of determining the current working state of the magnetic track brake be performed, making the method more complete and applicable to a wider range.

[0092] Currently, after foreign objects are found at the bottom of the brake pads, the cleaning of these foreign objects is still done manually. This requires a lot of manpower and can only be done during certain specific time periods, usually when rail vehicles enter the station, so the cleaning efficiency is relatively low.

[0093] In a preferred embodiment, the rail vehicle further includes a cleaning device, and the brake pads are multiple; after determining that there is a foreign object on the bottom of the brake pad, the device further includes:

[0094] When the current working state of the magnetic track brake is determined to be the brake release state, the cleaning device is controlled to clean the bottom of the brake shoe.

[0095] It should be noted that determining the presence of foreign objects at the bottom of the brake shoe can be done either during the braking application state or during the braking release state. However, cleaning the bottom of the brake shoe is only permitted when the magnetic track brake is in the braking release state. Specific details regarding the cleaning device can be found in the following embodiments.

[0096] In this embodiment, after determining that there is a foreign object at the bottom of the brake shoe, when the magnetic track brake is currently in the brake release state, the processor controls the cleaning device to automatically clean the bottom of the brake shoe. This not only saves a lot of manpower, but also improves the degree of automation, thereby improving the cleaning efficiency.

[0097] Please refer to Figure 2 , Figure 2 This is a structural diagram of a magnetic track brake provided in an embodiment of the present invention.

[0098] As a preferred embodiment, such as Figure 2The cleaning device includes a controllable valve and a compressed air pipe installed at the bottom of the brake shoe. One end of the controllable valve is connected to the main air duct of the rail vehicle, and the other end is connected to each compressed air pipe. Each compressed air pipe is provided with a ventilation hole. In practical applications, the controllable valve can be a solenoid valve. Of course, this is only a preferred embodiment, and the specific type of controllable valve is not limited.

[0099] The cleaning device is controlled to clean the bottom of the brake pole shoes, including:

[0100] The controllable valve is opened within a preset time period so that compressed air in the main air duct can clean the bottom of the brake shoe through the compressed air pipeline.

[0101] In practice, the preset time can be set reasonably according to actual needs. This embodiment provides a specific implementation of the cleaning device. By controlling the opening and closing of the controllable valve, the presence of compressed air in the compressed air pipeline is controlled, and then the bottom of the brake shoe is cleaned by the compressed air. This saves a lot of manpower, improves the degree of automation, is relatively easy to implement, and cleaning by compressed air will not affect the track or brake shoe.

[0102] In practical applications, if foreign objects on the brake pads are stubborn or happen to be in the cleaning blind spot of the cleaning device, and the cleaning device fails to clean the bottom of the brake pads, it should issue a warning to the driver so that the driver can be informed that some brake pads need to be manually cleaned and maintained.

[0103] In a preferred embodiment, after the cleaning device cleans the bottom of the brake pads, it further includes:

[0104] Determine whether there are foreign objects at the bottom of the brake shoe based on the distance between the brake shoe and the track;

[0105] If so, the control prompt module will issue a prompt.

[0106] It should be noted that the determination of whether there are foreign objects at the bottom of the brake shoe based on the distance between the brake shoe and the track is carried out in the brake release state. The specific determination method can be found in the above embodiment, and will not be repeated here. The description of the prompt module and the prompt content can be found in the above embodiment.

[0107] In this embodiment, after the cleaning device cleans the bottom of the brake pads, it again determines whether there are foreign objects on the bottom of the brake pads, and then decides whether to issue a reminder to the driver based on the judgment result, so as to remind the driver that some brake pads need to be manually cleaned and maintained, thus improving the adaptability of the method.

[0108] Please refer to Figure 4, Figure 4 The present invention provides a structural diagram of a rail vehicle, which includes a magnetic track brake 41 and a foreign object detection device 42 for the brake pole shoes. The magnetic track brake 41 is connected to the foreign object detection device 42 for the brake pole shoes.

[0109] Please refer to Figure 3 , Figure 3 This invention provides a structural diagram of a foreign object detection system for brake pole shoes, applicable to rail vehicles, including magnetic track brakes. The system includes:

[0110] The working state determination unit 31 is used to determine the current working state of the magnetic track brake, which includes the brake release state and the brake application state.

[0111] Distance determination unit 32 is used to determine the distance between the brake pole shoe in the magnetic track brake and the track;

[0112] The foreign object detection unit 33 is used to determine whether there is a foreign object at the bottom of the brake shoe based on the current working state of the magnetic track brake and the distance between the brake shoe and the track.

[0113] Since the embodiments of the system and rail vehicle parts correspond to the embodiments of the method parts, please refer to the description of the embodiments of the method parts for the embodiments of the system and rail vehicle parts, and they will not be repeated here.

[0114] Please refer to Figure 5 , Figure 5 This is a structural diagram of a foreign object detection device for brake pedal shoes provided in an embodiment of the present invention. The foreign object detection device for brake pedal shoes includes:

[0115] Memory 20 is used to store computer programs;

[0116] The processor 21 is used to execute a computer program to implement the steps of the foreign object detection method for brake shoe as described in the above embodiments.

[0117] The foreign object detection device for brake pads provided in this embodiment may include, but is not limited to, smartphones, tablets, laptops, or desktop computers.

[0118] The processor 21 may include one or more processing cores, such as a quad-core processor or an octa-core processor. The processor 21 may be implemented using at least one of the following hardware forms: Digital Signal Processor (DSP), Field-Programmable Gate Array (FPGA), or Programmable Logic Array (PLA). The processor 21 may also include a main processor and a coprocessor. The main processor, also known as the central processing unit, is used to process data in the wake-up state; the coprocessor is a low-power processor used to process data in the standby state. In some embodiments, the processor 21 may integrate a GPU, which is responsible for rendering and drawing the content to be displayed on the screen. In some embodiments, the processor 21 may also include an Artificial Intelligence (AI) processor, which handles computational operations related to machine learning.

[0119] The memory 20 may include one or more computer-readable storage media, which may be non-transitory. The memory 20 may also include high-speed random access memory and non-volatile memory, such as one or more disk storage devices or flash memory devices. In this embodiment, the memory 20 is used to store at least the following computer program 201, which, after being loaded and executed by the processor 21, is capable of implementing the relevant steps of the brake shoe foreign object detection method disclosed in any of the foregoing embodiments. In addition, the resources stored in the memory 20 may also include an operating system 202 and data 203, and the storage method may be temporary or permanent storage. The operating system 202 may include Windows, Unix, Linux, etc. The data 203 may include, but is not limited to, data related to the brake shoe foreign object detection method.

[0120] In some embodiments, the brake shoe foreign object detection device may further include a display screen 22, an input / output interface 23, a communication interface 24, a power supply 25, and a communication bus 26.

[0121] Those skilled in the art will understand that Figure 5 The structure shown does not constitute a limitation on the foreign object detection device for brake pole shoes and may include more or fewer components than shown.

[0122] Finally, the present invention also provides an embodiment corresponding to a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, it implements the steps described in the above method embodiments.

[0123] It is understood that if the methods in the above embodiments are implemented as software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and executes all or part of the steps of the methods described in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0124] It should also be noted that, in this specification, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0125] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A method for detecting foreign objects in brake pole shoes, characterized in that, Applied to a rail vehicle, the rail vehicle including a magnetic rail brake, the method includes: Determine the current operating state of the magnetic track brake, which includes a brake release state and a brake application state; Determine the distance between the brake pole shoe in the magnetic track brake and the track; Based on the current working state of the magnetic track brake and the distance between the brake shoe and the track, determine whether there are foreign objects at the bottom of the brake shoe.

2. The method for detecting foreign objects in the brake pads as described in claim 1, characterized in that, A distance detection module is provided between adjacent brake pole shoes to determine the distance between the brake pole shoes in the magnetic track brake and the track, including: Obtain the distance between the distance detection module and the track as detected by each of the distance detection modules; Based on the current operating state of the magnetic track brake and the distance between the brake shoe and the track, determine whether there are foreign objects at the bottom of the brake shoe, including: The presence of foreign objects at the bottom of the brake shoe is determined based on the current operating state of the magnetic track brake and the distance between each distance detection module and the track.

3. The method for detecting foreign objects in the brake pad shoe as described in claim 1, characterized in that, Based on the current operating state of the magnetic track brake and the distance between the brake shoe and the track, determine whether there are foreign objects at the bottom of the brake shoe, including: If the current working state of the magnetic track brake is the braking application state, determine whether the distance is not less than the first preset distance; If so, it is determined that there is a foreign object at the bottom of the brake shoe; If not, it is determined that there are no foreign objects at the bottom of the brake shoe.

4. The method for detecting foreign objects in the brake pads as described in claim 3, characterized in that, After determining that there is a foreign object at the bottom of the brake shoe, the procedure further includes: Determine whether the brake shoe has been found to have a foreign object at the bottom of the brake shoe a preset number of times in the braking state before the current determination that the brake shoe has a foreign object at the bottom; If so, the control prompt module will issue a prompt.

5. The method for detecting foreign objects in the brake pads as described in claim 1, characterized in that, Based on the current operating state of the magnetic track brake and the distance between the brake shoe and the track, determine whether there are foreign objects at the bottom of the brake shoe, including: If the current working state of the magnetic track brake is the brake release state, determine whether the distance is not greater than the second preset distance; If so, it is determined that there is a foreign object at the bottom of the brake shoe; If not, it is determined that there are no foreign objects at the bottom of the brake shoe.

6. The method for detecting foreign objects in the brake pads as described in claim 1, characterized in that, Before determining the current operating state of the magnetic track brake, the process also includes: Determine whether the braking function of the magnetic track brake is normal. If so, proceed to the step of determining the current working state of the magnetic track brake; If not, the control prompt module will issue a prompt.

7. The method for detecting foreign objects in the brake pad shoe as described in any one of claims 1 to 6, characterized in that, The rail vehicle also includes a cleaning device, and there are multiple brake pads. After determining that there is a foreign object on the bottom of the brake pad, the system further includes: When the current working state of the magnetic track brake is determined to be the brake release state, the cleaning device is controlled to clean the bottom of the brake shoe.

8. The method for detecting foreign objects in the brake pad shoe as described in claim 7, characterized in that, The cleaning device includes a controllable valve and a compressed air pipe disposed at the bottom of the brake shoe. One end of the controllable valve is connected to the main air duct of the rail vehicle, and the other end is connected to each of the compressed air pipes. Each of the compressed air pipes is provided with a ventilation hole. Controlling the cleaning device to clean the bottom of the brake pole shoe includes: The controllable valve is controlled to open within a preset time period so that compressed air in the main air duct can clean the bottom of the brake shoe through the compressed air pipeline.

9. A foreign object detection device for brake pads, characterized in that, include: Memory, used to store computer programs; A processor, configured to execute the computer program to implement the steps of the brake pole shoe foreign object detection method as described in any one of claims 1 to 8.

10. A rail vehicle, characterized in that, It includes a magnetic track brake and a foreign object detection device for the brake pole shoe as described in claim 9, wherein the magnetic track brake is connected to the foreign object detection device for the brake pole shoe.

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