Train rim lubrication control method, device and equipment and medium

Abstract

The invention discloses a train rim lubrication control method, device and equipment and a medium. Route information, broadcast information and real-time speed of a train are obtained, the route information comprises station position coordinates, curve position coordinates and straightway position coordinates, whether the train enters a station or not is judged according to the broadcast information and the real-time speed, if it is judged that the train enters the station, initial position coordinates of the train are calibrated according to the station position coordinates, and the train is calibrated according to the initial position coordinates. The method comprises the steps of calibrating initial position coordinates of a train to obtain calibrated initial position coordinates, determining real-time position coordinates of the train according to the calibrated initial position coordinates and the real-time train speed, and generating a rim lubrication control instruction according to the real-time position coordinates, the curve position coordinates and the straightway position coordinates. By the adoption of the scheme, errors generated when the train is positioned can be calibrated, so that the real-time position of the train is accurately positioned, and accurate control over the rim lubricating system is achieved.

Description

Technical Field

[0001] This invention relates to the field of rail transit technology, and in particular to a method, device, equipment and medium for controlling lubrication of train wheel flanges. Background Technology

[0002] Currently, most domestic rail transit vehicles are equipped with wheel flange lubrication devices. The purpose of these devices is to spray lubricating oil / grease to reduce wheel wear while ensuring adequate wheel-rail adhesion for operation. Since the friction between the wheel and rail differs on curves and straight sections, wheel flange lubrication systems must differentiate between these sections and apply different spraying strategies. Generally, because the wheelset experiences greater contact force with the rail and more severe wear when turning, the wheel flange lubrication device sprays more frequently on curves than on straight sections, thereby extending the service life of the wheelset.

[0003] In existing technologies, acceleration sensors are typically installed on train bogies to detect whether the train is running on a curve or a straight track. When the train's speed is greater than zero, lubrication of the track is performed based on the sensor's detection results. However, the sensors have limited detection accuracy, and the feedback information from the bogies to the track has a certain degree of error, making it impossible to precisely control the lubrication of the wheel flanges.

[0004] Therefore, how to provide a solution to the above-mentioned technical problems is a technical problem that needs to be solved by those in the relevant technical field. Summary of the Invention

[0005] To address the aforementioned technical problems, this invention provides a train wheel flange lubrication control method, device, equipment, and medium, which can calibrate errors generated during train positioning, thereby accurately locating the real-time position of the train and achieving precise control of the wheel flange lubrication system.

[0006] This invention provides a method for controlling lubrication of train wheel flanges, comprising: Obtain train route information, broadcast information, and real-time train speed; the route information includes the coordinates of station locations, curve locations, and straight sections. Determine whether a train is entering the station based on broadcast information and real-time train speed; If so, the initial position coordinates of the train are calibrated based on the station position coordinates to obtain the calibrated initial position coordinates; The real-time position coordinates of the train are determined based on the calibrated initial position coordinates and the real-time speed. Based on the real-time position coordinates, curve position coordinates, and straight section position coordinates, generate wheel flange lubrication control commands.

[0007] Preferably, the method further includes: Determine whether the train's broadcast message has been received; If so, proceed with the steps to obtain the train's route information, broadcast information, and real-time speed.

[0008] Preferably, the method further includes: Obtain information on the opening and closing of train doors; and The decision to allow a train to enter the station is based on broadcast information, real-time train speed, and door opening / closing information.

[0009] Preferably, the method further includes: Obtain information on the opening and closing of the platform screen doors at the station; and The decision to allow a train to enter the station is based on broadcast information, real-time train speed, door opening / closing information, and platform screen door opening / closing information.

[0010] Preferably, based on the real-time position coordinates, the curve position coordinates, and the straight section position coordinates, a flange lubrication control command is generated, including: The train's position is determined as either a curve or a straight section based on its real-time position coordinates, curve position coordinates, and straight section position coordinates. If the train is located on a curve, a curve wheel flange lubrication control command will be generated. If the train is on a straight track, a straight track wheel flange lubrication control command will be generated.

[0011] Preferably, the injection frequency in the lubrication control command for curved wheel flanges is higher than the injection frequency in the lubrication control command for straight wheel flanges.

[0012] Preferably, the method further includes: Flange spray lubrication is performed according to the flange lubrication control command.

[0013] Another aspect of the present invention provides a train wheel flange lubrication control device, comprising: The information acquisition module is used to acquire train route information, broadcast information, and real-time train speed; among which, the route information includes station location coordinates, curve location coordinates, and straight section location coordinates; The station entry judgment module is used to determine whether a train is entering the station based on broadcast information and real-time train speed; The position calibration module is used to calibrate the initial position coordinates of the train based on the station position coordinates when the determination result of the station entry judgment module is yes, so as to obtain the calibrated initial position coordinates. The position determination module is used to determine the real-time position coordinates of the train based on the calibrated initial position coordinates and the real-time vehicle speed. The instruction generation module is used to generate wheel flange lubrication control instructions based on real-time position coordinates, curve position coordinates, and straight section position coordinates.

[0014] Another aspect of the present invention provides an electronic device, comprising: Memory, used to store computer programs; A processor is used to execute the computer program to implement the steps of the train wheel flange lubrication control method described above.

[0015] In another aspect, the present invention provides a computer-readable storage medium storing a computer program that, when executed by a processor, implements the steps of the above-described train wheel flange lubrication control method.

[0016] The present invention has at least the following beneficial effects: This invention acquires train route information, broadcast information, and real-time train speed. The route information includes station location coordinates, curve location coordinates, and straight-line location coordinates. Based on the broadcast information and real-time train speed, it determines whether the train has entered a station. If the train has entered a station, its initial position coordinates are calibrated based on the station location coordinates to obtain calibrated initial position coordinates. Based on the calibrated initial position coordinates and the real-time train speed, the train's real-time position coordinates are determined. Finally, based on the real-time position coordinates, curve location coordinates, and straight-line location coordinates, wheel flange lubrication control commands are generated. Using the solution of this application, errors generated during train positioning can be calibrated, thereby accurately locating the train's real-time position and achieving precise control of the wheel flange lubrication system. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 A schematic flowchart of a train wheel flange lubrication control method provided in an embodiment of the present invention; Figure 2 This is a schematic diagram of a train wheel flange lubrication control device provided in an embodiment of the present invention. Detailed Implementation

[0019] The core of this invention is to provide a method, device, equipment and medium for controlling the lubrication of train wheel flanges, which can calibrate the errors generated during train positioning, thereby accurately locating the real-time position of the train and realizing precise control of the wheel flange lubrication system.

[0020] 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.

[0021] One embodiment of the present invention provides a method for controlling the lubrication of train wheel flanges; please refer to [link to relevant documentation]. Figure 1 The method includes: Step S110: Obtain the train's route information, broadcast information, and real-time speed; wherein, the route information includes the coordinates of the station location, the coordinates of the curve location, and the coordinates of the straight section location.

[0022] In this embodiment of the invention, the CCU (Central Control Unit) pre-stores all route information for the entire train line, including station location coordinates, curve location coordinates, and straight section location coordinates. In specific implementations, it may also include information such as the distance between stations. Simultaneously, the CCU monitors broadcast information and obtains the train's real-time speed.

[0023] Step S120: Determine whether the train is entering the station based on the broadcast information and real-time train speed. If yes, proceed to step S130.

[0024] In this embodiment of the invention, the train receives a broadcast announcement when it enters a station. Specifically, in fully automatic broadcasting, the ATC (Automatic Train Control) sends the announcement; in semi-automatic or manual broadcasting, the driver manually sets the broadcast announcement via the HMI (Human Machine Interface) in the driver's cab. After receiving the broadcast announcement, the CCU (Center Control Unit) can identify the station the train will stop at. Since the broadcast announcement usually occurs some time before the train's arrival, whether the train has entered the station also requires a combined judgment based on the train's real-time speed. That is, the train is considered to have entered the station only when the broadcast announcement is received and the train's real-time speed is zero.

[0025] Step S130: The initial position coordinates of the train are calibrated according to the station position coordinates to obtain the calibrated initial position coordinates.

[0026] In this embodiment of the invention, when it is determined that the train has entered the station, the position coordinates of the station to which the train will stop can be obtained based on the identified station information and the obtained position coordinates of each station. Then, the initial position coordinates of the train are calibrated to correct the errors generated during train positioning and improve the accuracy of train positioning.

[0027] It is understood that this invention divides the train's operating route into several sections, with each section's endpoint being a station, and each section's starting point being the end point of the previous section. When the train stops at any station, the CCU assigns the train new initial position coordinates. Since the position coordinates of each station are fixed and accurate, errors generated during train positioning can be calibrated within each section, thereby improving the accuracy of train positioning.

[0028] Step S140: Determine the real-time position coordinates of the train based on the calibrated initial position coordinates and the real-time speed.

[0029] In this embodiment of the invention, when the train leaves the current station and starts again, the CCU can calculate the real-time position coordinates of the train more accurately by performing an integral calculation on the real-time speed of the train and combining it with the calibrated initial position coordinates.

[0030] Step S150: Generate wheel flange lubrication control commands based on real-time position coordinates, curve position coordinates, and straight section position coordinates.

[0031] In this embodiment of the invention, the CCU compares the real-time position coordinates of the train with the obtained position coordinates of the curves and straight sections of the track, thereby generating corresponding wheel flange lubrication control commands and achieving precise control of the wheel flange lubrication system.

[0032] As described above, the train flange lubrication control method provided in this embodiment of the invention acquires train track information, broadcast information, and real-time train speed. The track information includes station location coordinates, curve location coordinates, and straight-line location coordinates. Based on the broadcast information and real-time train speed, it determines whether the train has entered a station. If the train has entered a station, its initial position coordinates are calibrated based on the station location coordinates to obtain calibrated initial position coordinates. Based on the calibrated initial position coordinates and real-time train speed, the train's real-time position coordinates are determined. Finally, based on the real-time position coordinates, curve location coordinates, and straight-line location coordinates, a flange lubrication control command is generated. Using the solution of this application, errors generated during train positioning can be calibrated, thereby accurately locating the train's real-time position and achieving precise control of the flange lubrication system.

[0033] Furthermore, in the above embodiments, the method further includes: Determine whether the train's broadcast message has been received; If so, proceed to step S110.

[0034] In this embodiment of the invention, the CCU monitors the broadcast station information in real time. Since the ATC or driver's cab only sends broadcast station information when the train is running on a regular line, when the CCU receives the broadcast station information, it can determine that the train is running on a regular line, at which point wheel flange spray lubrication is required.

[0035] It should be noted that when vehicles are running on informal tracks such as depots, test tracks, or standby tracks, the wheel flange lubrication system does not require wheel flange spray lubrication. Existing wheel flange lubrication control methods cannot identify these situations. However, the train wheel flange lubrication control method provided by this invention can distinguish between formal and informal tracks, thereby achieving precise control of the wheel flange lubrication system.

[0036] Furthermore, in the above embodiments, the method further includes: Obtain information on the opening and closing of train doors; and The decision to allow a train to enter the station is based on broadcast information, real-time train speed, and door opening / closing information.

[0037] In this embodiment of the invention, since station announcements typically occur some time before the train arrives at the station, if the train needs to temporarily stop due to a malfunction at this time, relying solely on the announcement information and real-time speed to determine whether the train has arrived at the station may lead to misjudgments. Therefore, combining the train's door opening and closing information to jointly determine whether the train has arrived at the station can eliminate the interference of train malfunctions on the location determination. It is understood that in this embodiment, the train is only considered to have arrived at the station when the station announcement information is received, the train's real-time speed is zero, and the train doors are open.

[0038] Furthermore, in the above embodiments, the method further includes: Obtain information on the opening and closing of the platform screen doors at the station; and The decision to allow a train to enter the station is based on broadcast information, real-time train speed, door opening / closing information, and platform screen door opening / closing information.

[0039] In this embodiment of the invention, when the train is an urban rail vehicle or a subway vehicle, the station platform is equipped with platform screen doors. When the train enters the station, the platform screen doors open in conjunction with the train doors. Therefore, whether a train has entered the station can be determined by combining the information from the opening and closing of the platform screen doors, thereby further eliminating interference from train malfunctions in determining the location. It is understood that in this embodiment, the train is only considered to have entered the station when a broadcast announcement is received, the train's real-time speed is zero, the train doors are open, and the station's platform screen doors open in conjunction.

[0040] Optionally, in the above embodiments, step S150 specifically includes: The train's position is determined as either a curve or a straight section based on its real-time position coordinates, curve position coordinates, and straight section position coordinates. If the train is located on a curve, a curve wheel flange lubrication control command will be generated. If the train is on a straight track, a straight track wheel flange lubrication control command will be generated.

[0041] In this embodiment of the invention, the CCU compares the real-time position coordinates of the train with the obtained position coordinates of the curve and the straight section of the track to determine whether the train is currently on a curve or a straight section, and generates curve wheel flange lubrication control commands and straight section wheel flange lubrication control commands respectively, that is, applying different injection strategies to curves and straight sections respectively.

[0042] Furthermore, in the above embodiments, the injection frequency in the curve wheel flange lubrication control command is higher than the injection frequency in the straight wheel flange lubrication control command.

[0043] In this embodiment of the invention, since the wheelset has a greater contact force with the track and more severe wear when the train turns, the wheel flange lubrication system sprays at a higher frequency on curves than on straight sections, which can extend the service life of the wheelset.

[0044] Optionally, in the above embodiments, the method further includes: Flange spray lubrication is performed according to the flange lubrication control command.

[0045] In this embodiment of the invention, after the CCU generates the flange lubrication control command, it sends it to the flange lubrication control system, and the flange lubrication control system performs corresponding flange spray lubrication according to the received flange lubrication control command.

[0046] Another aspect of the present invention provides a train wheel flange lubrication control device, which can be referred to in conjunction with the method described above.

[0047] Please see Figure 2 The device includes: The information acquisition module 210 is used to acquire train route information, broadcast information, and real-time train speed; among which, the route information includes station location coordinates, curve location coordinates, and straight section location coordinates; The station entry judgment module 220 is used to determine whether a train is entering the station based on broadcast information and real-time train speed. The position calibration module 230 is used to calibrate the initial position coordinates of the train based on the station position coordinates when the determination result of the station entry judgment module is yes, so as to obtain the calibrated initial position coordinates. The position determination module 240 is used to determine the real-time position coordinates of the train based on the calibrated initial position coordinates and the real-time vehicle speed. The instruction generation module 250 is used to generate wheel flange lubrication control instructions based on real-time position coordinates, curve position coordinates, and straight section position coordinates.

[0048] As described above, the train flange lubrication control device provided in this embodiment of the invention acquires train track information, broadcast information, and real-time train speed. The track information includes station location coordinates, curve location coordinates, and straight-line location coordinates. Based on the broadcast information and real-time train speed, it determines whether the train has entered the station. If the train has entered the station, its initial position coordinates are calibrated based on the station location coordinates to obtain calibrated initial position coordinates. Based on the calibrated initial position coordinates and real-time train speed, the train's real-time position coordinates are determined. Finally, based on the real-time position coordinates, curve location coordinates, and straight-line location coordinates, a flange lubrication control command is generated. Using the solution of this application, errors generated during train positioning can be calibrated, thereby accurately locating the train's real-time position and achieving precise control of the flange lubrication system.

[0049] Another aspect of the present invention provides an electronic device, comprising: Memory, used to store computer programs; A processor is used to execute the computer program to implement the steps of the train wheel flange lubrication control method described above.

[0050] In another aspect, the present invention provides a computer-readable storage medium storing a computer program that, when executed by a processor, implements the steps of the above-described train wheel flange lubrication control method.

[0051] The various embodiments described in this specification are presented in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. 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 that element.

[0052] 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 controlling lubrication of train wheel flanges, characterized in that, include: The system acquires train route information, broadcast information, and real-time train speed; wherein the route information includes station location coordinates, curve location coordinates, and straight section location coordinates. Determine whether the train is entering the station based on the broadcast information and the real-time vehicle speed; If so, the initial position coordinates of the train are calibrated based on the station position coordinates to obtain the calibrated initial position coordinates; The real-time position coordinates of the train are determined based on the calibrated initial position coordinates and the real-time vehicle speed. Based on the real-time position coordinates, the curve position coordinates, and the straight section position coordinates, a wheel flange lubrication control command is generated.

2. The train wheel flange lubrication control method according to claim 1, characterized in that, The method further includes: Determine whether the train's broadcast message has been received; If so, then proceed with the steps of obtaining train route information, broadcast information, and real-time train speed.

3. The train wheel flange lubrication control method according to claim 1, characterized in that, The method further includes: Obtain information on the opening and closing of train doors; and The system determines whether the train is entering the station based on the broadcast information, the real-time vehicle speed, and the door opening / closing information.

4. The train wheel flange lubrication control method according to claim 3, characterized in that, The method further includes: Obtain information on the opening and closing of the platform screen doors at the station; and The system determines whether a train is entering the station based on the broadcast information, the real-time vehicle speed, the door opening / closing information, and the platform screen door opening / closing information.

5. The train wheel flange lubrication control method according to claim 1, characterized in that, The step of generating wheel flange lubrication control commands based on the real-time position coordinates, the curve position coordinates, and the straight section position coordinates includes: The train's position is determined to be either a curve or a straight section based on the real-time position coordinates, the curve position coordinates, and the straight section position coordinates. If the train is located on a curve, a curve wheel flange lubrication control command will be generated. If the train is on a straight track, a straight track wheel flange lubrication control command will be generated.

6. The train wheel flange lubrication control method according to claim 5, characterized in that, The injection frequency in the curve wheel flange lubrication control command is higher than the injection frequency in the straight wheel flange lubrication control command.

7. The train wheel flange lubrication control method according to claim 1, characterized in that, The method further includes: Flange spray lubrication is performed according to the flange lubrication control command.

8. A train wheel flange lubrication control device, characterized in that, include: The information acquisition module is used to acquire train route information, broadcast information, and real-time train speed; wherein, the route information includes station location coordinates, curve location coordinates, and straight section location coordinates; The station entry determination module is used to determine whether the train is entering the station based on the broadcast information and the real-time train speed. The position calibration module is used to calibrate the initial position coordinates of the train based on the station position coordinates when the determination result of the station entry judgment module is yes, so as to obtain the calibrated initial position coordinates. The position determination module is used to determine the real-time position coordinates of the train based on the calibrated initial position coordinates and the real-time vehicle speed. The instruction generation module is used to generate wheel flange lubrication control instructions based on the real-time position coordinates, the curve position coordinates, and the straight section position coordinates.

9. An electronic device, characterized in that, include: Memory, used to store computer programs; A processor, configured to execute the computer program to implement the steps of the train wheel flange lubrication control method as described in any one of claims 1 to 7.

10. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a computer program that, when executed by a processor, implements the steps of the train wheel flange lubrication control method as described in any one of claims 1 to 7.

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