Brake pad life prediction method and device, electronic equipment and storage medium

Abstract

The application provides a brake pad life prediction method and device, electronic equipment and a storage medium. For a target brake pad to be predicted, the current brake pad pressure of the target brake pad is first obtained. If the brake pad pressure is greater than a preset pressure threshold, the current vehicle speed of the vehicle where the target brake pad is located is further obtained, and the current input power and wear rate of the target brake pad are determined according to the brake pad pressure and the vehicle speed. Finally, the remaining wear amount of the target brake pad is calculated according to the input power, the wear rate and the abradable amount of the target brake pad. Based on the application, the wear state of the vehicle brake pad can be evaluated and predicted, so that the EMU operation and maintenance unit can timely master the actual wear condition of the EMU brake pad, thereby effectively managing the inventory and reducing resource waste.

Description

Technical Field

[0001] This invention relates to the field of software technology, and more specifically, to a method, apparatus, electronic device, and storage medium for predicting brake pad life. Background Technology

[0002] The brake pads used in the braking system of high-speed trains need to have their remaining thickness measured periodically during use, and when they reach the wear limit, they need to be replaced with new ones. This work is currently done manually.

[0003] Because of the large number of brake pads and their installation location under the train, inspection requires a significant amount of manpower. Furthermore, the maintenance units of the high-speed trains struggle to monitor the wear and tear of the brake pads, hindering their ability to efficiently organize spare parts and resulting in waste of warehouse space and resources. Summary of the Invention

[0004] In view of this, to solve the above problems, the present invention provides a method, apparatus, electronic device, and storage medium for predicting brake pad life, the technical solution of which is as follows:

[0005] A method for predicting brake pad life, the method comprising:

[0006] Obtain the current brake pressure of the target brake pad to be predicted;

[0007] If the brake pad pressure is greater than a preset pressure threshold, the current vehicle speed of the vehicle where the target brake pad is located is obtained, and the current input power and wear rate of the target brake pad are determined based on the brake pad pressure and the vehicle speed.

[0008] The remaining wear of the target brake pad is calculated based on the input power, the wear rate, and the wearable amount corresponding to the target brake pad.

[0009] Preferably, determining the current input power and wear rate of the target brake pad based on the brake pad pressure and the vehicle speed includes:

[0010] Determine the coefficient of friction that matches the brake pad pressure and the vehicle speed;

[0011] The current input power of the target brake pad is calculated based on the brake pad pressure, the vehicle speed, and the friction coefficient.

[0012] Determine the wear rate that matches the input power.

[0013] Preferably, calculating the current remaining wear of the target brake pad based on the input power, the wear rate, and the wearability of the target brake pad includes:

[0014] Calculate the current wear of the target brake pad based on the input power and the wear rate;

[0015] obtaining a current cumulative abrasion amount of the target brake pad by time-integrating the abrasion amount;

[0016] calculating a current residual abrasion amount of the target brake pad using the corresponding abradable amount of the target brake pad and the cumulative abrasion amount.

[0017] Preferably, the method further comprises:

[0018] obtaining a current input energy of the target brake pad by time-integrating the input power.

[0019] Preferably, the method further comprises:

[0020] obtaining a current cumulative usage mileage of the target brake pad by time-integrating the vehicle speed.

[0021] Preferably, the method further comprises:

[0022] in response to a reset instruction, clearing the residual abrasion amount and the cumulative usage mileage, and determining a new target brake pad.

[0023] Preferably, the method further comprises:

[0024] calculating a current residual abrasion ratio of the target brake pad according to the abradable amount and the residual abrasion amount, and outputting the residual abrasion ratio.

[0025] A brake pad life prediction device, the device comprising:

[0026] a pressure acquisition module configured to acquire a current brake pad pressure of a target brake pad to be predicted;

[0027] a first calculation module configured to, if the brake pad pressure is greater than a preset pressure threshold, acquire a current vehicle speed of a vehicle in which the target brake pad is located, and determine a current input power and a wear rate of the target brake pad according to the brake pad pressure and the vehicle speed;

[0028] a second calculation module configured to calculate a current residual abrasion amount of the target brake pad according to the input power, the wear rate, and a corresponding abradable amount of the target brake pad.

[0029] An electronic device, comprising at least one memory and at least one processor; the memory stores an application program, and the processor invokes the application program stored in the memory, and the application program is used to implement the brake pad life prediction method.

[0030] A storage medium stores computer program code that, when executed, implements the brake pad life prediction method.

[0031] Compared with the prior art, the present application has the following beneficial effects:

[0032] The present application provides a brake pad life prediction method, device, electronic equipment and storage medium. For a target brake pad to be predicted, the current brake pad pressure of the target brake pad is first obtained. If the brake pad pressure is greater than a preset pressure threshold, the current vehicle speed of the vehicle where the target brake pad is located is further obtained, and the current input power and wear rate of the target brake pad are determined according to the brake pad pressure and the vehicle speed. Finally, the remaining wear amount of the target brake pad is calculated according to the input power, the wear rate and the wear amount of the target brake pad. Based on the present application, the wear state of the brake pad can be evaluated and predicted, so that the actual wear condition of the brake pad of the motor train unit can be grasped in time by the motor train unit operation and maintenance unit, thereby effective inventory management can be performed and resource waste can be reduced. BRIEF DESCRIPTION OF DRAWINGS

[0033] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or prior art description will be briefly introduced. Obviously, the drawings in the following description are only embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of the provided drawings.

[0034] Figure 1 A method flowchart of the brake pad life prediction method provided by the embodiment of the present application is provided.

[0035] Figure 2 A part of the method flowchart of the brake pad life prediction method provided by the embodiment of the present application is provided.

[0036] Figure 3 Another part of the method flowchart of the brake pad life prediction method provided by the embodiment of the present application is provided.

[0037] Figure 4 Another method flowchart of the brake pad life prediction method provided by the embodiment of the present application is provided.

[0038] Figure 5 Still another method flowchart of the brake pad life prediction method provided by the embodiment of the present application is provided.

[0039] Figure 6 A structure schematic diagram of the brake pad life prediction device provided by the embodiment of the present application is provided. DETAILED DESCRIPTION

[0040] 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, and 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.

[0041] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0042] See Figure 1 , Figure 1 This is a flowchart of a brake pad life prediction method provided in an embodiment of the present invention. The brake pad life prediction method includes the following steps:

[0043] S10: Obtain the current brake pressure of the target brake pad to be predicted.

[0044] In this embodiment of the invention, the target brake pad is the brake pad used in the EMU braking system that is to be subject to lifespan prediction. In practical applications, the brake pad pressure of the target brake pad can be obtained using a brake cylinder pressure sensor or a force sensor, which is the pressure on one side of the target brake pad.

[0045] It should be noted that the brake cylinder pressure sensor can collect the actual brake cylinder pressure (i.e., the actual air pressure) of the vehicle (i.e., the EMU), and then convert the brake cylinder pressure into the corresponding brake pad pressure; while the force sensor can directly collect the brake pad pressure. Considering that different vehicle models are different, either the actual air pressure signal or the sensor's electrical signal can be input, as long as it corresponds to the brake pad pressure. This embodiment of the invention does not limit this.

[0046] It should also be noted that the above vehicle models are used to distinguish different vehicle types. Different basic braking parameters (such as brake pad pressure) can be regarded as different vehicle models, while the same basic braking parameters can be regarded as the same vehicle model.

[0047] S20, if the brake pad pressure is greater than the preset pressure threshold, obtain the current vehicle speed of the vehicle where the target brake pad is located, and determine the current input power and wear rate of the target brake pad based on the brake pad pressure and vehicle speed.

[0048] In this embodiment of the invention, the brake pad pressure can be used to determine whether the vehicle's air brake is in an applied state. Specifically, if the brake pad pressure is greater than a preset pressure threshold, it is determined that the air brake is in an applied state; conversely, if the brake pad pressure is not greater than the preset pressure threshold, it is determined that the air brake is not in an applied state.

[0049] Further, if the air brake is in the applied state, the brake pad pressure and the integral permission signal are outputted to realize the prediction of the subsequent residual wear amount. If the air brake is in the unapplied state, the brake pad pressure and the integral permission signal are not outputted, and the prediction of the subsequent residual wear amount is not performed.

[0050] Further, if the air brake is in the applied state, the brake pad pressure and the integral permission signal are outputted to realize the prediction of the subsequent residual wear amount. If the air brake is in the unapplied state, the brake pad pressure and the integral permission signal are not outputted, and the prediction of the subsequent residual wear amount is not performed.

[0051] Further, according to the bench test data of the brake pad, the data provided by the brake pad supplier and the like, a brake pad basic wear database is established, and the current input power and the current wear rate of the target brake pad are determined by using the brake pad pressure and the vehicle speed.

[0052] In the implementation process, the step S20 of "determining the current input power and the wear rate of the target brake pad according to the brake pad pressure and the vehicle speed" can adopt the following steps, and the method flow chart is as shown in the figure: Figure 2

[0053] S201, determining the friction coefficient matched with the brake pad pressure and the vehicle speed.

[0054] In the embodiment of the present application, according to the bench test results of the installed brake pad, the early application situation or the brake pad manufacturer, a characteristic parameter library of brake pad friction is established, and the friction coefficient corresponding to different brake pad pressures and vehicle speeds is recorded in the characteristic parameter library of brake pad friction.

[0055] In this regard, according to the current brake pad pressure of the target brake pad and the current vehicle speed of the vehicle, the characteristic parameter library of brake pad friction is queried, and the friction coefficient under the corresponding working condition can be obtained.

[0056] S202, calculating the current input power of the target brake pad according to the brake pad pressure, the vehicle speed and the friction coefficient.

[0057] In the embodiment of the present application, the brake pad pressure and the friction coefficient can be used to calculate the braking force received by the target brake pad, and then the current input power of the target brake pad is calculated according to the vehicle speed and other parameters. For details, refer to the following formula (1):

[0058] Input power = brake pad pressure * friction coefficient * vehicle speed * coefficient (1)

[0059] Wherein, the above coefficient is an adjustment parameter related to the vehicle, and is a preset value.

[0060] S203, determining the wear rate matched with the input power.

[0061] ​In the embodiment of the present application, according to the test results of the column-mounted gate blade rack, the early application situation or the gate blade manufacturer, a characteristic parameter library of gate blade wear is established, and the characteristic parameter library records the wear coefficients corresponding to different input powers.

[0062] To this end, according to the current input power of the target gate blade, the characteristic parameter library of gate blade wear is queried, and the corresponding wear rate can be obtained.

[0063] S30, according to the input power, the wear rate and the wearable amount corresponding to the target gate blade, the current residual wear amount of the target gate blade is calculated.

[0064] In the embodiment of the present application, according to the current input power and the wear rate of the target gate blade, the cumulative wear amount of the target gate blade can be calculated by using the integral method, and then the difference between the preset wearable amount of the target gate blade and the cumulative wear amount is taken as the current residual wear amount of the target gate blade and is output.

[0065] It should be noted that the wearable amount corresponding to the target gate blade and the residual wear amount can be output in the form of thickness (unit: mm).

[0066] In the specific implementation process, the step S30 of calculating the current residual wear amount of the target gate blade according to the input power, the wear rate and the wearable amount corresponding to the target gate blade can adopt the following steps, and the method flow chart is as shown in Figure 3

[0067] S301, according to the input power and the wear rate, the current wear amount of the target gate blade is calculated.

[0068] In the embodiment of the present application, the current wear amount of the target gate blade is the wear amount per unit time, which can be calculated by the wear rate and the input power, and specifically can refer to the following formula (2):

[0069] Wear amount = wear rate * input power (2)

[0070] S302, the current cumulative wear amount of the target gate blade is obtained by time integration of the wear amount.

[0071] In the embodiment of the present application, the wear amount integrator can be set to continuously accumulate the current wear amount of the target gate blade according to time, and the wear amount is integrated according to time by the integral method, so as to obtain the current cumulative wear amount of the target gate blade.

[0072] It should be noted that when the integral permission signal does not exist, the time integration of the wear amount is not continued, that is, the wear amount at this time is not accumulated into the cumulative wear amount.

[0073] S303, the current residual wear amount of the target gate blade is calculated by using the wearable amount corresponding to the target gate blade and the cumulative wear amount.​

[0074] In the embodiment of the present application, the difference between the preset abradable amount of the target brake pad and the accumulated abraded amount can be used as the current residual abraded amount of the target brake pad, and of course, the residual abraded amount can be further corrected based on the field operation data to obtain the final residual abraded amount, and the final residual abraded amount is outputted.

[0075] On this basis, in order to comprehensively evaluate the target brake pad, the brake pad life prediction method provided by the embodiment of the present application can further include the following steps:

[0076] The current input energy of the target brake pad is obtained by time integration of the input power.

[0077] In the embodiment of the present application, an input power integrator can be provided to continuously accumulate the current input power of the target brake pad according to time, and the input power is integrated according to time by integration method, so as to obtain the current input energy of the target brake pad.

[0078] In some embodiments, in order to obtain the use mileage of the target brake pad in the vehicle in time, the brake pad life prediction method provided by the embodiment of the present application can further include the following steps, and the method flow chart is as shown in Figure 4

[0079] S40, the current accumulated use mileage of the target brake pad is obtained by time integration of the vehicle speed.

[0080] In the embodiment of the present application, the use mileage of the vehicle speed is integrated in time, and the current accumulated use mileage of the target brake pad, i.e. the accumulated use mileage, can be outputted in units of kilometers or ten thousand kilometers. Specifically, a mileage integrator can be provided to continuously accumulate the current vehicle speed of the vehicle according to time, and the vehicle speed is integrated according to time by integration method, so as to obtain the current accumulated use mileage of the target brake pad and output it. It should be noted that when the integration permission signal does not exist, the time integration of the vehicle speed is not continued, i.e. the vehicle speed at this time is not accumulated into the accumulated use mileage.

[0081] On this basis, in response to the updating operation of the brake pad by the staff, the brake pad life prediction method provided by the embodiment of the present application further includes the following steps:

[0082] In response to the reset instruction, the residual abraded amount and the accumulated use mileage are cleared, and a new target brake pad is determined.

[0083] In the embodiment of the present application, the reset instruction is a signal instruction manually activated by the staff after updating the brake pad by the staff. After obtaining the reset instruction, the current residual abraded amount and the accumulated use mileage of the target brake pad calculated in the early stage are cleared, and the life prediction of the brake pad updated by the staff as the target brake pad is restarted. ​

[0084] In this case, when the reset instruction appears, the remaining wear amount and the cumulative use mileage of the target brake pad are cleared and restored to the brand-new state, and the current remaining wear amount and the cumulative use mileage of another new target brake pad are predicted.

[0085] In some embodiments, to facilitate the EMU operation and maintenance unit to view the life of the target brake pad, the brake pad life prediction method provided by the embodiments of the present application can further include the following steps, and the method flow chart is shown in Figure 5

[0086] S50, according to the abradable amount and the remaining wear amount, the current remaining wear ratio of the target brake pad is calculated, and the remaining wear ratio is output.

[0087] In the embodiments of the present application, the proportion of the current remaining wear amount of the target brake pad in the abradable amount can be calculated to obtain the current remaining wear ratio of the target brake pad, and the remaining wear ratio can be output to the EMU operation and maintenance unit in the form of percentage. Thus, the wear trend of the target brake pad can be provided to the operation and maintenance company in the form of data, so as to facilitate the preparation of spare parts according to the actual wear state, improve the turnover efficiency of materials, and reduce waste.

[0088] The brake pad life prediction method provided by the embodiments of the present application can evaluate and predict the wear state of the brake pad, so that the EMU operation and maintenance unit can timely grasp the actual wear condition of the EMU brake pad, thereby effectively managing the inventory and reducing resource waste.

[0089] Based on the brake pad life prediction method provided in the above embodiments, the embodiments of the present application correspondingly provide a device for executing the above brake pad life prediction method, and a structure diagram of the device is shown in Figure 6 , which includes:

[0090] The pressure acquisition module 10 is configured to acquire the current brake pad pressure of the target brake pad to be predicted.

[0091] The first calculation module 20 is configured to acquire the current vehicle speed of the vehicle where the target brake pad is located, and determine the current input power and wear rate of the target brake pad according to the brake pad pressure and the vehicle speed, if the brake pad pressure is greater than a preset pressure threshold.

[0092] The second calculation module 30 is configured to calculate the current remaining wear amount of the target brake pad according to the input power, the wear rate and the abradable amount corresponding to the target brake pad.

[0093] Optionally, the first calculation module 20 configured to determine the current input power and wear rate of the target brake pad according to the brake pad pressure and the vehicle speed is specifically configured to:

[0094] ​determine a friction coefficient matched with the brake pad pressure and the vehicle speed; calculate an input power of the target brake pad at present according to the brake pad pressure, the vehicle speed and the friction coefficient; and determine a wear rate matched with the input power.

[0095] Optionally, the second calculation module 30 is configured to calculate the remaining wear amount of the target brake pad at present according to the input power, the wear rate and the abradable amount corresponding to the target brake pad, and specifically configured to:

[0096] calculate the wear amount of the target brake pad at present according to the input power and the wear rate; obtain the cumulative wear amount of the target brake pad at present by time integration on the wear amount; and calculate the remaining wear amount of the target brake pad at present by using the cumulative wear amount and the abradable amount corresponding to the target brake pad.

[0097] Optionally, the second calculation module 30 is further configured to:

[0098] obtain the input energy of the target brake pad at present by time integration on the input power.

[0099] Optionally, the second calculation module 30 is further configured to:

[0100] obtain the cumulative use mileage of the target brake pad at present by time integration on the vehicle speed.

[0101] Optionally, the second calculation module 30 is further configured to:

[0102] in response to a reset instruction, clear the remaining wear amount and the cumulative use mileage, and determine a new target brake pad.

[0103] Optionally, the second calculation module 30 is further configured to:

[0104] calculate the remaining wear ratio of the target brake pad at present according to the abradable amount and the remaining wear amount, and output the remaining wear ratio.

[0105] It should be noted that the detailed functions of each module in the embodiments of the present application can be referred to the corresponding disclosed part of the brake pad life prediction method embodiments described above, and will not be described here.

[0106] Based on the brake pad life prediction method provided in the above embodiments, the embodiments of the present application further provide an electronic device, which comprises at least one memory and at least one processor; the memory stores an application program, and the processor invokes the application program stored in the memory, and the application program is used to realize the brake pad life prediction method.

[0107] Based on the brake pad life prediction method provided in the above embodiments, the embodiments of the present application further provide a storage medium, which stores computer program code, and the computer program code is executed to realize the brake pad life prediction method.

[0108] The above describes in detail the valve plate life prediction method, device, electronic equipment and storage medium provided by the present application. The principles and implementation manners of the present application are described by using specific examples. The above description of the embodiments is only used to help understand the method of the present application and its core idea. Meanwhile, for those skilled in the art, according to the idea of the present application, the specific implementation manners and application ranges can be changed. Therefore, the content of the specification should not be understood as a limitation of the present application.

[0109] It should be noted that each of the embodiments in the specification adopts a progressive manner for description, and each embodiment focuses on the difference from other embodiments. The same and similar parts between the embodiments can be referred to each other. For the device disclosed by the embodiments, since it corresponds to the method disclosed by the embodiments, the description is relatively simple, and the related parts can be referred to the method part.

[0110] It should also be noted that, in this document, the terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is any such actual relationship or order between the entities or operations. Moreover, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device inherently includes a series of elements, or further includes the elements inherent to the process, method, article or device. Without more limitations, the element defined by the statement "including a" does not exclude the presence of other identical elements in the process, method, article or device including the element.

[0111] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present application. Various modifications to the embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A method for predicting brake pad life, characterized in that, The method includes: Obtain the current brake pressure of the target brake pad to be predicted; If the brake pad pressure is greater than a preset pressure threshold, obtain the current vehicle speed of the vehicle where the target brake pad is located, and determine the friction coefficient that matches the brake pad pressure and the vehicle speed. The current input power of the target brake pad is calculated based on the brake pad pressure, the vehicle speed, and the friction coefficient. Determine the wear rate that matches the input power; Calculate the current wear of the target brake pad based on the input power and the wear rate; The current cumulative wear of the target brake pad is obtained by integrating the wear amount over time. The remaining wear amount of the target brake pad is calculated using the wearable amount corresponding to the target brake pad and the cumulative wear amount.

2. The method according to claim 1, characterized in that, The method further includes: The current input energy of the target brake element is obtained by integrating the input power over time.

3. The method according to claim 1, characterized in that, The method further includes: The cumulative usage mileage of the target brake pad is obtained by integrating the vehicle speed over time.

4. The method according to claim 3, characterized in that, The method further includes: In response to the reset command, the remaining wear and the cumulative mileage are cleared to zero, and a new target brake pad is determined.

5. The method according to claim 1, characterized in that, The method further includes: Based on the wearable amount and the remaining wear amount, calculate the current remaining wear percentage of the target brake pad and output the remaining wear percentage.

6. A brake pad life prediction device, characterized in that, The device includes: The pressure acquisition module is used to acquire the current brake pressure of the target brake pad to be predicted; The first calculation module is used to: if the brake pad pressure is greater than a preset pressure threshold, obtain the current vehicle speed of the vehicle where the target brake pad is located, determine the friction coefficient that matches the brake pad pressure and the vehicle speed; calculate the current input power of the target brake pad based on the brake pad pressure, the vehicle speed and the friction coefficient; and determine the wear rate that matches the input power. The second calculation module is used to calculate the current wear amount of the target brake pad based on the input power and the wear rate; to obtain the current cumulative wear amount of the target brake pad by integrating the wear amount over time; and to calculate the current remaining wear amount of the target brake pad using the wearable amount corresponding to the target brake pad and the cumulative wear amount.

7. An electronic device, characterized in that, The electronic device includes: at least one memory and at least one processor; the memory stores an application program, and the processor calls the application program stored in the memory, the application program being used to implement the brake life prediction method according to any one of claims 1-5.

8. A storage medium, characterized in that, The storage medium stores computer program code, which, when executed, implements the brake pad life prediction method according to any one of claims 1-5.

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