Brake fluid high temperature early warning method, device and equipment and vehicle

Abstract

The embodiment of the invention provides a brake fluid high temperature early warning method, device and equipment and a vehicle, and relates to the technical field of vehicle braking. The method comprises the steps that the real-time temperature of a brake caliper in a vehicle at the current moment is determined; according to the real-time temperature of the brake caliper, the temperature variation of brake fluid in the vehicle is determined; according to the temperature variation of the brake fluid, the temperature of the brake fluid at the next moment is determined; and high-temperature early warning processing is conducted according to the temperature of the brake fluid at the next moment. The method is used for achieving the effect of improving the accuracy of high-temperature early warning of the brake fluid in the vehicle.

Description

Technical Field

[0001] The present application relates to the field of vehicle braking technology, and in particular to a brake fluid high temperature early warning method, device, equipment and vehicle. Background Art

[0002] During vehicle driving, it is necessary to monitor the temperature of the brake fluid in the vehicle in real time to prevent the brake fluid from vaporizing when the temperature is too high, thereby causing the vehicle's brake system to fail and affecting vehicle driving safety.

[0003] In the prior art, whether the temperature of the brake fluid is too high is determined based on the temperature of the brake disc in the vehicle, so as to issue a high temperature warning.

[0004] However, in the above method, there is a certain physical distance and heat conduction path between the position of the brake fluid and the brake disc. Therefore, the temperature of the brake disc cannot directly and accurately reflect the temperature of the brake fluid, which leads to the disadvantage of excessive high temperature warning in the vehicle, affecting vehicle performance. Summary of the invention

[0005] The embodiments of the present application provide a brake fluid high temperature warning method, device, equipment and vehicle to solve the technical problem that the vehicle has an excessive high temperature warning due to a certain physical distance and heat conduction path between the position of the brake fluid and the brake disc.

[0006] In a first aspect, an embodiment of the present application provides a brake fluid high temperature warning method, comprising:

[0007] Determine the real-time temperature of the brake caliper in the vehicle at the current moment; and determine the temperature change of the brake fluid in the vehicle according to the real-time temperature of the brake caliper; wherein the temperature change represents the temperature change of the brake fluid in the current time period;

[0008] determining the temperature of the brake fluid at a next moment according to the temperature change of the brake fluid;

[0009] A high temperature warning process is performed according to the temperature of the brake fluid at the next moment.

[0010] In a possible implementation manner, determining the temperature change of the brake fluid in the vehicle according to the real-time temperature of the brake caliper includes:

[0011] The temperature change of the brake fluid is determined according to the real-time temperature of the brake disc and the real-time temperature of the brake caliper in the vehicle.

[0012] In a possible implementation manner, determining the temperature change of the brake fluid according to the real-time temperature of the brake disc and the real-time temperature of the brake caliper in the vehicle includes:

[0013] The temperature change of the brake fluid is determined according to the driving speed and ambient temperature of the vehicle, the real-time temperature of the brake disc, and the real-time temperature of the brake caliper.

[0014] In a possible implementation manner, determining the temperature change of the brake fluid according to the driving speed and ambient temperature of the vehicle, the real-time temperature of the brake disc, and the real-time temperature of the brake caliper includes:

[0015] Determine a first coefficient corresponding to the driving speed and a second coefficient, a third coefficient and a fourth coefficient of the vehicle; wherein the first coefficient is a convection heat transfer coefficient between a brake caliper and air in the vehicle at the current driving speed; the second coefficient is a heat radiation coefficient of a brake disc in the vehicle to a brake caliper; the third coefficient is a heat radiation coefficient of a brake caliper in the vehicle to an environment in which the vehicle is located; and the fourth coefficient is an average heat capacity of a brake caliper in the vehicle;

[0016] The temperature change amount of the brake fluid is determined according to the ambient temperature, the real-time temperature of the brake disc, the real-time temperature of the brake caliper, the first coefficient, the second coefficient, the third coefficient, and the fourth coefficient.

[0017] In a possible implementation manner, determining the first coefficient corresponding to the driving speed and the second coefficient, the third coefficient, and the fourth coefficient of the vehicle includes:

[0018] According to at least one preset driving speed, a brake disc in the vehicle in a target state is cooled to obtain a first temperature set, a second temperature set and a third temperature set corresponding to each of the preset driving speeds; wherein the target state indicates that the temperature of the brake disc reaches the maximum allowable temperature; the first temperature set includes the temperature of the brake disc at each collection moment; the second temperature set includes the temperature of the brake caliper in the vehicle at each collection moment; and the third temperature set includes the ambient temperature of the environment in which the vehicle is located at each collection moment;

[0019] According to each of the preset driving speeds and the first temperature set, the second temperature set and the third temperature set corresponding to each of the preset driving speeds, a first coefficient corresponding to the driving speed and a second coefficient, a third coefficient and a fourth coefficient of the vehicle are determined.

[0020] In a possible implementation, determining the first coefficient corresponding to the driving speed and the second coefficient, the third coefficient, and the fourth coefficient of the vehicle according to each of the preset driving speeds and the first temperature set, the second temperature set, and the third temperature set corresponding to each of the preset driving speeds includes:

[0021] Determining a set of changes corresponding to the preset driving speed according to the second temperature set corresponding to the preset driving speed; wherein the set of changes includes a temperature change of the brake fluid between every two adjacent moments in the brake disc cooling process corresponding to the preset driving speed;

[0022] Performing fitting processing on the preset driving speed and the first temperature set, the second temperature set, the third temperature set and the variation set corresponding to the preset driving speed to obtain an initial first coefficient corresponding to the preset driving speed and a second coefficient, a third coefficient and a fourth coefficient of the vehicle;

[0023] Linear fitting processing is performed on each of the preset driving speeds and the initial first coefficient corresponding to each of the preset driving speeds to obtain the first coefficient corresponding to the driving speed.

[0024] In a possible implementation manner, the temperature change of the brake fluid is ;in, is the duration of the current time period, is the ambient temperature, is the real-time temperature of the brake disc, is the real-time temperature of the brake caliper, is the second coefficient, is the third coefficient, is the first coefficient corresponding to the driving speed, is the fourth coefficient.

[0025] In a possible implementation manner, determining the temperature of the brake fluid at the next moment according to the temperature change of the brake fluid includes:

[0026] The temperature of the brake fluid at the next moment is determined according to the real-time temperature of the brake caliper and the temperature change of the brake fluid.

[0027] In a possible implementation manner, the temperature of the brake fluid at the next moment is ;in, is the real-time temperature of the brake caliper, is the temperature change of the brake fluid.

[0028] In a second aspect, an embodiment of the present application provides a brake fluid high temperature warning device, comprising:

[0029] A first determination module is used to determine the real-time temperature of the brake caliper in the vehicle at the current moment; and determine the temperature change of the brake fluid in the vehicle according to the real-time temperature of the brake caliper; wherein the temperature change represents the temperature change of the brake fluid in the current time period;

[0030] A second determination module, used to determine the temperature of the brake fluid at a next moment according to the temperature change of the brake fluid;

[0031] The early warning module is used to perform high temperature early warning processing according to the temperature of the brake fluid at the next moment.

[0032] In a possible implementation manner, the first determination module is specifically configured to determine the temperature change of the brake fluid according to the real-time temperature of the brake disc and the real-time temperature of the brake caliper in the vehicle.

[0033] In a possible implementation manner, the first determination module is specifically configured to determine the temperature change of the brake fluid according to the driving speed and ambient temperature of the vehicle, the real-time temperature of the brake disc, and the real-time temperature of the brake caliper.

[0034] In a possible implementation manner, the first determination module is specifically used to: determine a first coefficient corresponding to the driving speed and a second coefficient, a third coefficient and a fourth coefficient of the vehicle; wherein the first coefficient is the convection heat transfer coefficient between the brake caliper and the air in the vehicle at the current driving speed; the second coefficient is the thermal radiation coefficient of the brake disc in the vehicle to the brake caliper; the third coefficient is the thermal radiation coefficient of the brake caliper in the vehicle to the environment in which the vehicle is located; the fourth coefficient is the average heat capacity of the brake caliper in the vehicle; and determine the temperature change of the brake fluid based on the ambient temperature, the real-time temperature of the brake disc, the real-time temperature of the brake caliper, the first coefficient, the second coefficient, the third coefficient and the fourth coefficient.

[0035] In a possible implementation manner, the first determination module is further specifically used to: cool the brake disc in the vehicle in a target state according to at least one preset driving speed to obtain a first temperature set, a second temperature set and a third temperature set corresponding to each of the preset driving speeds; wherein the target state indicates that the temperature of the brake disc reaches the maximum allowable temperature; the first temperature set includes the temperature of the brake disc at each collection moment; the second temperature set includes the temperature of the brake caliper in the vehicle at each collection moment; the third temperature set includes the ambient temperature of the environment in which the vehicle is located at each collection moment; and determine the first coefficient corresponding to the driving speed and the second coefficient, the third coefficient and the fourth coefficient of the vehicle according to each of the preset driving speeds and the first temperature set, the second temperature set and the third temperature set corresponding to each of the preset driving speeds.

[0036] In a possible implementation manner, the first determination module is further specifically used to: determine a set of variation quantities corresponding to the preset driving speed based on a second temperature set corresponding to the preset driving speed; wherein the set of variation quantities includes the temperature variation quantity of the brake fluid between every two adjacent moments in the brake disc cooling process corresponding to the preset driving speed; perform fitting processing on the preset driving speed and the first temperature set, the second temperature set, the third temperature set and the set of variation quantities corresponding to the preset driving speed to obtain an initial first coefficient corresponding to the preset driving speed and a second coefficient, a third coefficient and a fourth coefficient of the vehicle; perform linear fitting processing on each of the preset driving speeds and the initial first coefficient corresponding to each of the preset driving speeds to obtain a first coefficient corresponding to the driving speed.

[0037] In a possible implementation manner, the temperature change of the brake fluid is ;in, is the duration of the current time period, is the ambient temperature, is the real-time temperature of the brake disc, is the real-time temperature of the brake caliper, is the second coefficient, is the third coefficient, is the first coefficient corresponding to the driving speed, is the fourth coefficient.

[0038] In a possible implementation manner, the second determination module is specifically configured to determine the temperature of the brake fluid at a next moment according to the real-time temperature of the brake caliper and the temperature change of the brake fluid.

[0039] In a possible implementation manner, the temperature of the brake fluid at the next moment is ;in, is the real-time temperature of the brake caliper, is the temperature change of the brake fluid.

[0040] In a third aspect, an embodiment of the present application provides an electronic device, including: a memory, a processor;

[0041] The memory stores computer-executable instructions;

[0042] The processor executes the computer-executable instructions stored in the memory, so that the processor executes the above first aspect and / or various possible implementations of the first aspect.

[0043] In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium, in which computer-executable instructions are stored. When the computer-executable instructions are executed by a processor, they are used to implement the first aspect above and / or various possible implementations of the first aspect.

[0044] In a fifth aspect, an embodiment of the present application provides a computer program product, which includes a computer program. When the computer program is executed by a processor, it implements the above first aspect and / or various possible implementation methods of the first aspect.

[0045] In a sixth aspect, an embodiment of the present application provides a vehicle, comprising the electronic device described in the third aspect, for implementing the first aspect and / or various possible implementations of the first aspect as described above.

[0046] The brake fluid high temperature warning method, device, equipment and vehicle provided in the embodiments of the present application monitor the real-time temperature of the brake caliper in the vehicle to determine the temperature change of the brake fluid in the vehicle during the current time period, and determine the temperature of the brake fluid at the next moment based on the temperature change of the brake fluid, and determine whether high temperature warning processing is required by judging the temperature of the brake fluid at the next moment; further, by monitoring the real-time temperature of the brake caliper in the vehicle, accurate brake fluid high temperature warning is performed, thereby improving the accuracy of the vehicle's brake fluid high temperature warning and ensuring the vehicle's driving performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0048] Figure 1 A schematic diagram of an application scenario provided for this application;

[0049] Figure 2 A schematic diagram of a process for early warning of high temperature of brake fluid provided in an embodiment of the present application;

[0050] Figure 3 A schematic diagram of a process flow of a high temperature warning method for a brake system provided in an embodiment of the present application;

[0051] Figure 4 A schematic flow chart of another brake fluid high temperature warning method provided in an embodiment of the present application;

[0052] Figure 5 A schematic flow chart of another brake fluid high temperature warning method provided in an embodiment of the present application;

[0053] Figure 6 A schematic diagram of the structure of a brake fluid high temperature warning device provided in an embodiment of the present application;

[0054] Figure 7 A schematic diagram of the structure of an electronic device provided in an embodiment of the present application.

[0055] The above drawings have shown clear embodiments of the present application, which will be described in more detail later. These drawings and text descriptions are not intended to limit the scope of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0056] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present application. Instead, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims.

[0057] During vehicle driving, it is necessary to monitor the temperature of the brake fluid in the vehicle in real time to prevent the brake fluid from vaporizing when the temperature is too high, thereby causing the vehicle's brake system to fail and affecting vehicle driving safety.

[0058] In one example, based on the temperature of the brake disc in the vehicle, it is determined whether the temperature of the brake fluid is too high to issue a high temperature warning.

[0059] However, in the above method, there is a certain physical distance and heat conduction path between the position of the brake fluid and the brake disc. Therefore, the temperature of the brake disc cannot directly and accurately reflect the temperature of the brake fluid, which leads to the disadvantage of excessive high temperature warning in the vehicle, affecting vehicle performance.

[0060] In response to the above technical problems, this application proposes the following technical concept: by monitoring the real-time temperature of the brake caliper in the vehicle, determine the temperature change of the brake fluid in the vehicle during the current time period, and determine the temperature of the brake fluid at the next moment based on the temperature change of the brake fluid, and determine whether a high temperature warning is required by judging the temperature of the brake fluid at the next moment. In this way, it is possible to solve the technical problem in the prior art that the vehicle has an excessive high temperature warning due to a certain physical distance and heat conduction path between the position of the brake fluid and the brake disc.

[0061] Figure 1 A schematic diagram of an application scenario provided by this application. Figure 1As shown, the specific application scenario of the present application includes an electronic device 101, a brake disc 102 and a brake caliper 103 in a vehicle. The electronic device 101 collects the real-time temperature of the brake caliper 103 through a temperature sensor, determines the temperature of the brake fluid at the next moment, and then determines whether to perform high temperature warning processing.

[0062] The technical solution of the present application and how the technical solution of the present application solves the above-mentioned technical problems are described in detail below with specific embodiments. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments. The embodiments of the present application will be described below in conjunction with the accompanying drawings.

[0063] Figure 2 A schematic diagram of a brake fluid high temperature warning method provided in an embodiment of the present application is shown in FIG. Figure 2 As shown, the method includes:

[0064] 201. Determine the real-time temperature of the brake caliper in the vehicle at the current moment; and determine the temperature change of the brake fluid in the vehicle according to the real-time temperature of the brake caliper; wherein the temperature change represents the temperature change of the brake fluid in the current time period.

[0065] Exemplarily, the execution subject of this embodiment may be an electronic device in a vehicle. For ease of description, the electronic device is referred to as the device below. The device is a physical device or a virtual device for executing the brake fluid high temperature warning method. The device determines the real-time temperature of the brake caliper in the vehicle at the current moment by using a temperature sensor that collects the temperature of the brake caliper, and calculates and processes the real-time temperature of the brake caliper based on the brake fluid temperature calculation module in the device to obtain the temperature change of the brake fluid in the vehicle within the current time period, that is, from the current moment to the next moment, that is, the temperature change of the brake fluid. It is worth adding that in actual applications, the temperature of the brake fluid in the vehicle is similar to the temperature of the brake caliper, and it can be considered that the brake fluid temperature is the same as the brake caliper temperature. Figure 3 A schematic diagram of a high temperature warning method for a brake system provided in an embodiment of the present application is shown in FIG. Figure 3 As shown, the real-time temperature of the brake fluid at the current moment can be used to calculate the real-time temperature of the brake fluid based on the brake fluid temperature calculation module to obtain the temperature change of the brake fluid in the current time period.

[0066] 202. Determine the temperature of the brake fluid at the next moment according to the temperature change of the brake fluid.

[0067] For example, in combination Figure 3, based on the brake fluid temperature calculation module, based on the preset calculation formula, or the deep learning model, the temperature change of the brake fluid is calculated and processed, and the temperature of the brake fluid at the next moment can be determined for processing. It is worth noting that when determining the real-time temperature of the brake caliper in the vehicle at the current moment, the temperature of the brake caliper at the previous moment can also be calculated by the calculation method in this embodiment to obtain the temperature change of the brake fluid between the previous moment and the current moment, and further calculate the temperature of the brake fluid in the vehicle at the current moment, that is, the real-time temperature of the brake caliper in the vehicle at the current moment.

[0068] 203. Perform high temperature warning processing according to the temperature of the brake fluid at the next moment.

[0069] For example, in combination Figure 3 The device judges and analyzes the temperature of the brake fluid at the next moment based on the preset high-temperature warning strategy. For example, if the temperature of the brake fluid at the next moment is greater than the preset temperature, a high-temperature warning process is performed, and an alarm message in audio or text form can be generated to remind the occupants in the vehicle that the brake fluid temperature in the current vehicle is too high; if the temperature of the brake fluid at the next moment is less than or equal to the preset temperature, no alarm process is performed or the alarm is released.

[0070] In the present embodiment, a brake fluid high temperature warning method is provided, which determines the temperature change of the brake fluid in the vehicle within the current time period by monitoring the real-time temperature of the brake caliper in the vehicle, and determines the temperature of the brake fluid at the next moment based on the temperature change of the brake fluid. By judging the temperature of the brake fluid at the next moment, it is determined whether a high temperature warning process is required; further, by monitoring the real-time temperature of the brake caliper in the vehicle, a brake fluid high temperature warning is accurately performed, thereby improving the accuracy of the vehicle's brake fluid high temperature warning and ensuring the vehicle's driving performance.

[0071] Figure 4 A schematic diagram of another brake fluid high temperature warning method provided in an embodiment of the present application is shown in FIG. Figure 4 As shown, the method includes:

[0072] 301. Determine the real-time temperature of the brake caliper in the vehicle at the current moment.

[0073] Exemplarily, this step may refer to step 201 and will not be described in detail here.

[0074] 302. Determine the temperature change of the brake fluid according to the real-time temperature of the brake disc and the real-time temperature of the brake caliper in the vehicle.

[0075] For example, in combination Figure 3The device determines the real-time temperature of the brake disc at the current moment based on the brake disc temperature calculation module or the brake disc temperature sensor, and calculates and processes the real-time temperature of the brake disc and the determined real-time temperature of the brake caliper based on the brake fluid temperature calculation module to obtain the temperature change of the brake fluid.

[0076] In one example, step 302 includes: determining a temperature change of the brake fluid according to a driving speed and an ambient temperature of the vehicle, a real-time temperature of the brake disc, and a real-time temperature of the brake caliper.

[0077] Specifically, combined Figure 3 The device determines the real-time temperature of the brake disc at the current moment based on the brake disc temperature calculation module or the brake disc temperature sensor, and determines the vehicle's current speed and the ambient temperature of the vehicle's environment based on the vehicle speed sensor and the ambient temperature sensor; based on the brake fluid temperature calculation module, according to a preset calculation formula, the vehicle's current speed and ambient temperature, the determined real-time temperature of the brake disc, and the real-time temperature of the brake caliper are calculated and processed to obtain the temperature change of the brake fluid.

[0078] 303. Determine the temperature of the brake fluid at the next moment according to the real-time temperature of the brake caliper and the temperature change of the brake fluid.

[0079] In one example, the temperature of the brake fluid at the next moment ;in, is the real-time temperature of the brake caliper, is the temperature change of the brake fluid.

[0080] Exemplarily, the device calculates and processes the determined real-time temperature of the brake caliper and the temperature change of the brake fluid by a preset calculation method based on the brake fluid temperature calculation module to obtain the temperature of the brake fluid at the next moment; specifically, the formula , real-time temperature of the brake caliper and brake fluid temperature change Calculate and process to get the temperature of the brake fluid at the next moment .

[0081] 304. Perform high temperature warning processing according to the temperature of the brake fluid at the next moment.

[0082] Exemplarily, this step may refer to step 203 and will not be described in detail here.

[0083] In this embodiment, based on the above embodiment, by calculating and processing the vehicle's driving speed and ambient temperature at the current moment, the determined real-time temperature of the brake disc, and the real-time temperature of the brake caliper, the temperature of the brake fluid at the next moment can be accurately obtained, and then the brake fluid high temperature warning processing can be accurately performed.

[0084] Figure 5 A schematic diagram of a flow chart of another brake fluid high temperature warning method provided in an embodiment of the present application, such as Figure 5 As shown, the method includes:

[0085] 401. Determine the real-time temperature of a brake caliper in a vehicle at a current moment.

[0086] Exemplarily, this step may refer to step 201 and will not be described in detail here.

[0087] 402. Determine a first coefficient corresponding to the driving speed and a second coefficient, a third coefficient and a fourth coefficient of the vehicle; wherein the first coefficient is the convection heat transfer coefficient between the brake caliper in the vehicle and the air at the current driving speed; the second coefficient is the thermal radiation coefficient of the brake disc in the vehicle to the brake caliper; the third coefficient is the thermal radiation coefficient of the brake caliper in the vehicle to the environment in which the vehicle is located; and the fourth coefficient is the average heat capacity of the brake caliper in the vehicle.

[0088] Exemplarily, based on the device, according to the current driving speed of the vehicle, the first coefficient corresponding to the driving speed is determined from the preset coefficient module, that is, the convection heat transfer coefficient between the brake caliper in the vehicle and the air at the current driving speed, and the second coefficient, third coefficient and fourth coefficient of the vehicle are determined from the preset coefficient module, wherein the second coefficient is the thermal radiation coefficient of the brake disc to the brake caliper in the vehicle; the third coefficient is the thermal radiation coefficient of the brake caliper in the vehicle to the environment in which the vehicle is located; and the fourth coefficient is the average heat capacity of the brake caliper in the vehicle.

[0089] In one example, step 402 includes the following steps:

[0090] The first step of step 402 is to cool the brake disc in the vehicle in a target state according to at least one preset driving speed to obtain a first temperature set, a second temperature set and a third temperature set corresponding to each preset driving speed; wherein the target state represents that the temperature of the brake disc reaches the maximum allowable temperature; the first temperature set includes the temperature of the brake disc at each collection moment; the second temperature set includes the temperature of the brake caliper in the vehicle at each collection moment; and the third temperature set includes the ambient temperature of the environment in which the vehicle is located at each collection moment.

[0091] The second step of step 402 is to determine the first coefficient corresponding to the driving speed and the second coefficient, third coefficient and fourth coefficient of the vehicle according to each preset driving speed and the first temperature set, second temperature set and third temperature set corresponding to each preset driving speed.

[0092] For example, when determining each coefficient, it is necessary to calibrate the coefficient in advance. When the temperature of the brake disc of the vehicle reaches the maximum allowable temperature, that is, when the brake disc is in the target state, the brake disc is cooled at a plurality of preset driving speeds, and data is collected to obtain the temperature of the brake disc at each collection moment during the cooling process of the brake disc corresponding to each preset driving speed, that is, the first temperature set, and the temperature of the brake caliper in the vehicle at each collection moment, that is, the second temperature set, and the ambient temperature of the environment in which the vehicle is located at each collection moment, that is, the third temperature set. For each preset driving speed, the first temperature set, the second temperature set, and the third temperature set corresponding to each preset driving speed are respectively fitted and calculated to obtain the first coefficient corresponding to the current driving speed and the second coefficient, the third coefficient, and the fourth coefficient of the vehicle.

[0093] In one example, the second step of step 402 includes:

[0094] Step 1: Determine a set of changes corresponding to the preset driving speed based on a second temperature set corresponding to the preset driving speed; wherein the set of changes includes the temperature change of the brake fluid between every two adjacent moments of the brake disc cooling process corresponding to the preset driving speed.

[0095] Step 2: Fitting the preset driving speed and the first temperature set, second temperature set, third temperature set and variation set corresponding to the preset driving speed to obtain the initial first coefficient corresponding to the preset driving speed and the second coefficient, third coefficient and fourth coefficient of the vehicle.

[0096] Step 3: Perform linear fitting processing on each preset driving speed and the initial first coefficient corresponding to each preset driving speed to obtain the first coefficient corresponding to the driving speed.

[0097] Specifically, for each preset driving speed, the temperature and time in the second temperature set corresponding to the preset driving speed are calculated and processed to obtain the temperature change of the brake fluid between every two adjacent moments in the brake disc cooling process corresponding to the preset driving speed; based on a preset fitting algorithm such as least squares fitting, each preset driving speed and the first temperature set, second temperature set, third temperature set and change set corresponding to each preset driving speed are fitted to obtain the initial first coefficient corresponding to each preset driving speed and the second coefficient, third coefficient and fourth coefficient of the vehicle; based on a preset linear fitting algorithm, all preset driving speeds and the initial first coefficients corresponding to all preset driving speeds are linearly fitted to obtain a function between the preset driving speed and the initial first coefficient, and then the first coefficient corresponding to the driving speed is calculated according to the current driving speed.

[0098] For example, a brake disc temperature sensor is installed in a vehicle. The user drives the vehicle to perform continuous acceleration and braking to make the brake disc temperature rise to the maximum allowable temperature. The vehicle is driven at different speeds to cool the brake disc and record the brake disc temperature-time, brake caliper temperature-time and other data. When the brake disc temperature cools to below 50°C, the temperature measurement is stopped. The temperature change of the brake fluid is measured. This formula, in which The preset driving speed The duration between two adjacent moments of the corresponding brake disc cooling process, The ambient temperature at each moment measured during the brake disc cooling process, The real-time temperature of the brake disc at each moment measured during the brake disc cooling process. The real-time temperature of the brake caliper at each moment measured during the brake disc cooling process. is the second coefficient, is the third coefficient, The preset driving speed The corresponding initial first coefficient is, is the fourth coefficient; based on is the measured data, a set of multidimensional arrays, is an unknown constant. By using the least squares fitting method, we can solve A, B, D, and the , for different preset driving speeds Next and corresponding Do linear fitting to solve different Corresponding , which can be calculated based on the current driving speed , determine the driving speed The corresponding first coefficient .

[0099] 403. Determine a temperature change of the brake fluid according to the ambient temperature, the real-time temperature of the brake disc, the real-time temperature of the brake caliper, the first coefficient, the second coefficient, the third coefficient, and the fourth coefficient.

[0100] In one example, the temperature change of the brake fluid ;in, is the duration of the current time period, is the ambient temperature, is the real-time temperature of the brake disc, is the real-time temperature of the brake caliper, is the second coefficient, is the third coefficient, is the first coefficient corresponding to the driving speed, is the fourth coefficient.

[0101] Exemplarily, based on the brake fluid temperature calculation module, the determined driving speed, ambient temperature, real-time temperature of the brake disc, real-time temperature of the brake caliper, first coefficient, second coefficient, third coefficient and fourth coefficient are calculated and processed by a preset calculation method to obtain the temperature change of the brake fluid; wherein the duration of the current time period can be determined , that is, the time interval between the current moment and the next moment, and calls the preset formula Calculate and get the temperature change of the brake fluid ,in, is the duration of the current time period, is the ambient temperature, is the real-time temperature of the brake disc, is the real-time temperature of the brake caliper, is the second coefficient, is the third coefficient, is the first coefficient corresponding to the driving speed, is the fourth coefficient.

[0102] 404. Determine the temperature of the brake fluid at the next moment according to the temperature change of the brake fluid.

[0103] Exemplarily, this step may refer to step 202 and will not be described in detail here.

[0104] 405. Perform high temperature warning processing according to the temperature of the brake fluid at the next moment.

[0105] Exemplarily, this step may refer to step 203 and will not be described in detail here.

[0106] In this embodiment, on the basis of the above embodiment, a coefficient calibration method is used to predetermine multiple coefficients required for the current temperature calculation process, and the ambient temperature, the real-time temperature of the brake disc, and the real-time temperature of the brake caliper are combined to accurately determine the temperature of the brake fluid at the next moment. Furthermore, based on the brake fluid temperature, high temperature warning processing of the brake fluid can be accurately performed to avoid excessive alarms and improve the vehicle's extreme performance.

[0107] Figure 6 A schematic diagram of a brake fluid high temperature warning device provided in an embodiment of the present application is shown in FIG. Figure 6 As shown, the device comprises:

[0108] The first determination module 501 is used to determine the real-time temperature of the brake caliper in the vehicle at the current moment; and determine the temperature change of the brake fluid in the vehicle according to the real-time temperature of the brake caliper; wherein the temperature change represents the temperature change of the brake fluid in the current time period;

[0109] A second determination module 502 is used to determine the temperature of the brake fluid at a next moment according to the temperature change of the brake fluid;

[0110] The early warning module 503 is used to perform high temperature early warning processing according to the temperature of the brake fluid at the next moment.

[0111] In a possible implementation manner, the first determination module 501 is specifically configured to determine a temperature change of the brake fluid according to a real-time temperature of a brake disc and a real-time temperature of a brake caliper in the vehicle.

[0112] In a possible implementation manner, the first determination module 501 is specifically configured to determine a temperature change of the brake fluid according to a vehicle's running speed and ambient temperature, a real-time temperature of the brake disc, and a real-time temperature of the brake caliper.

[0113] In a possible implementation, the first determination module 501 is specifically used to: determine a first coefficient corresponding to a driving speed and a second coefficient, a third coefficient and a fourth coefficient of the vehicle; wherein the first coefficient is the convection heat transfer coefficient between the brake caliper and the air in the vehicle at the current driving speed; the second coefficient is the thermal radiation coefficient of the brake disc in the vehicle to the brake caliper; the third coefficient is the thermal radiation coefficient of the brake caliper in the vehicle to the environment in which the vehicle is located; the fourth coefficient is the average heat capacity of the brake caliper in the vehicle; and determine the temperature change of the brake fluid according to the ambient temperature, the real-time temperature of the brake disc, the real-time temperature of the brake caliper, the first coefficient, the second coefficient, the third coefficient and the fourth coefficient.

[0114] In a possible implementation, the first determination module 501 is further specifically used to: cool the brake disc in the vehicle in a target state according to at least one preset driving speed to obtain a first temperature set, a second temperature set and a third temperature set corresponding to each preset driving speed; wherein the target state indicates that the temperature of the brake disc reaches the maximum allowable temperature; the first temperature set includes the temperature of the brake disc at each collection moment; the second temperature set includes the temperature of the brake caliper in the vehicle at each collection moment; the third temperature set includes the ambient temperature of the environment in which the vehicle is located at each collection moment; and determine the first coefficient corresponding to the driving speed and the second coefficient, the third coefficient and the fourth coefficient of the vehicle according to each preset driving speed and the first temperature set, the second temperature set and the third temperature set corresponding to each preset driving speed.

[0115] In a possible implementation, the first determination module 501 is further specifically used to: determine a set of variation values ​​corresponding to a preset driving speed according to a second temperature set corresponding to a preset driving speed; wherein the set of variation values ​​includes the temperature variation value of the brake fluid between every two adjacent moments in a brake disc cooling process corresponding to the preset driving speed; perform fitting processing on the preset driving speed and the first temperature set, the second temperature set, the third temperature set and the set of variation values ​​corresponding to the preset driving speed to obtain an initial first coefficient corresponding to the preset driving speed and a second coefficient, a third coefficient and a fourth coefficient of the vehicle; perform linear fitting processing on each preset driving speed and the initial first coefficient corresponding to each preset driving speed to obtain a first coefficient corresponding to the driving speed.

[0116] In a possible implementation, the temperature change of the brake fluid is ;in, is the duration of the current time period, is the ambient temperature, is the real-time temperature of the brake disc, is the real-time temperature of the brake caliper, is the second coefficient, is the third coefficient, is the first coefficient corresponding to the driving speed, is the fourth coefficient.

[0117] In a possible implementation manner, the second determination module 502 is specifically configured to determine the temperature of the brake fluid at the next moment according to the real-time temperature of the brake caliper and the temperature change of the brake fluid.

[0118] In a possible implementation, the temperature of the brake fluid at the next moment ;in, is the real-time temperature of the brake caliper, is the temperature change of the brake fluid.

[0119] The device of this embodiment can execute the technical solution in the above method. Its specific implementation process and technical principles are the same and will not be repeated here.

[0120] Figure 7 A schematic diagram of the structure of an electronic device provided in an embodiment of the present application is shown in FIG. Figure 7 As shown, the electronic device includes: a memory 601 and a processor 602; the memory 601 is a memory for storing instructions executable by the processor 602.

[0121] The processor 602 is configured to execute the method provided in the above embodiment.

[0122] The electronic device further includes a receiver 603 and a transmitter 604. The receiver 603 is used to receive instructions and data sent by other devices, and the transmitter 604 is used to send instructions and data to external devices.

[0123] The specific implementation process of the processor can be found in the above method embodiment, and its implementation principle and technical effect are similar, so this embodiment will not be repeated here.

[0124] In the above embodiments, it should be understood that the processor may be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), etc. A general-purpose processor may be a microprocessor or any conventional processor, etc. The steps of the method disclosed in the invention may be directly implemented as being executed by a hardware processor, or may be executed by a combination of hardware and software modules in the processor.

[0125] The memory may include a high-speed memory (Random Access Memory, referred to as RAM), and may also include a non-volatile memory (NVM), such as at least one disk storage.

[0126] An embodiment of the present application also provides a chip for executing instructions, which is used to execute the technical solution of the processing method in the above embodiment.

[0127] The embodiment of the present application also provides a computer-readable storage medium, in which computer-executable instructions are stored. When the computer-executable instructions are executed on a computer, the computer executes the technical solution of the processing method of the above embodiment.

[0128] The above-mentioned readable storage medium can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory, electrically erasable programmable read-only memory, erasable programmable read-only memory, programmable read-only memory, read-only memory, magnetic memory, flash memory, magnetic disk or optical disk. The readable storage medium can be any available medium that can be accessed by a general or special-purpose computer.

[0129] An exemplary readable storage medium is coupled to a processor so that the processor can read information from the readable storage medium and write information to the readable storage medium. Of course, the readable storage medium can also be an integral part of the processor. The processor and the readable storage medium can be located in a dedicated integrated circuit. Of course, the processor and the readable storage medium can also exist in a device as discrete components.

[0130] An embodiment of the present application also provides a computer program product, which includes a computer program stored in a computer-readable storage medium. At least one processor can read the computer program from the computer-readable storage medium. When at least one processor executes the computer program, the technical solution of the processing method in the above embodiment can be implemented.

[0131] An embodiment of the present application also provides a vehicle, which includes an electronic device, in which at least one processor can read a computer program from a computer-readable storage medium, and when the at least one processor executes the computer program, the technical solution of the processing method in the above embodiment can be implemented.

[0132] If the function is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, or the part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium, including several instructions for a computer device (which can be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods of each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk, etc. Various media that can store program codes.

[0133] It should be noted that, for the aforementioned method embodiments, for the sake of simplicity, they are all expressed as a series of action combinations, but those skilled in the art should be aware that the present application is not limited by the described order of actions, because according to the present application, certain steps can be performed in other orders or simultaneously. Secondly, those skilled in the art should also be aware that the embodiments described in the specification are all optional embodiments, and the actions and modules involved are not necessarily required by the present application.

[0134] In addition, unless otherwise specified, each functional unit / module in each embodiment of the present application may be integrated into one unit / module, each unit / module may exist physically separately, or two or more units / modules may be integrated together. The above-mentioned integrated unit / module may be implemented in the form of hardware or in the form of a software program module.

[0135] Those skilled in the art will appreciate that all or part of the steps of implementing the above-mentioned method embodiments can be completed by hardware associated with program instructions. The aforementioned program can be stored in a computer-readable storage medium. When the program is executed, the steps of the above-mentioned method embodiments are executed.

[0136] Finally, it should be noted that those skilled in the art will readily conceive of other embodiments of the present invention after considering the specification and practicing the invention disclosed herein. The present invention is intended to cover any variations, uses or adaptations of the present invention, which follow the general principles of the present invention and include common knowledge or customary technical means in the art not disclosed by the present invention, are not limited to the precise structure described above and shown in the drawings, and may be modified and changed in various ways without departing from the scope thereof. The scope of the present invention is limited only by the appended claims.

Claims

1. A brake fluid high temperature warning method, characterized in that: include: Determine the real-time temperature of the brake caliper in the vehicle at the current moment; and determining the temperature change of the brake fluid in the vehicle according to the real-time temperature of the brake caliper; wherein the temperature change represents the temperature change of the brake fluid in the current time period; determining the temperature of the brake fluid at a next moment according to the temperature change of the brake fluid; A high temperature warning process is performed according to the temperature of the brake fluid at the next moment.

2. The method according to claim 1, characterized in that Determining a temperature change of brake fluid in the vehicle according to the real-time temperature of the brake caliper includes: The temperature change of the brake fluid is determined according to the real-time temperature of the brake disc and the real-time temperature of the brake caliper in the vehicle.

3. The method according to claim 2, characterized in that Determining the temperature change of the brake fluid according to the real-time temperature of the brake disc and the real-time temperature of the brake caliper in the vehicle includes: The temperature change of the brake fluid is determined according to the driving speed and ambient temperature of the vehicle, the real-time temperature of the brake disc, and the real-time temperature of the brake caliper.

4. The method according to claim 3, characterized in that Determining the temperature change of the brake fluid according to the driving speed and ambient temperature of the vehicle, the real-time temperature of the brake disc, and the real-time temperature of the brake caliper, includes: Determine a first coefficient corresponding to the driving speed and a second coefficient, a third coefficient and a fourth coefficient of the vehicle; wherein the first coefficient is a convection heat transfer coefficient between a brake caliper and air in the vehicle at the current driving speed; the second coefficient is a heat radiation coefficient of a brake disc in the vehicle to a brake caliper; the third coefficient is a heat radiation coefficient of a brake caliper in the vehicle to an environment in which the vehicle is located; and the fourth coefficient is an average heat capacity of a brake caliper in the vehicle; The temperature change amount of the brake fluid is determined according to the ambient temperature, the real-time temperature of the brake disc, the real-time temperature of the brake caliper, the first coefficient, the second coefficient, the third coefficient, and the fourth coefficient.

5. The method according to claim 4, characterized in that Determining a first coefficient corresponding to the driving speed and a second coefficient, a third coefficient, and a fourth coefficient of the vehicle includes: According to at least one preset driving speed, a brake disc in the vehicle in a target state is cooled to obtain a first temperature set, a second temperature set and a third temperature set corresponding to each of the preset driving speeds; wherein the target state indicates that the temperature of the brake disc reaches the maximum allowable temperature; the first temperature set includes the temperature of the brake disc at each collection moment; the second temperature set includes the temperature of the brake caliper in the vehicle at each collection moment; and the third temperature set includes the ambient temperature of the environment in which the vehicle is located at each collection moment; According to each of the preset driving speeds and the first temperature set, the second temperature set and the third temperature set corresponding to each of the preset driving speeds, a first coefficient corresponding to the driving speed and a second coefficient, a third coefficient and a fourth coefficient of the vehicle are determined.

6. The method according to claim 5, characterized in that According to each of the preset driving speeds and the first temperature set, the second temperature set, and the third temperature set corresponding to each of the preset driving speeds, determining a first coefficient corresponding to the driving speed and a second coefficient, a third coefficient, and a fourth coefficient of the vehicle, including: Determining a set of changes corresponding to the preset driving speed according to the second temperature set corresponding to the preset driving speed; wherein the set of changes includes a temperature change of the brake fluid between every two adjacent moments in the brake disc cooling process corresponding to the preset driving speed; Performing fitting processing on the preset driving speed and the first temperature set, the second temperature set, the third temperature set and the variation set corresponding to the preset driving speed to obtain an initial first coefficient corresponding to the preset driving speed and a second coefficient, a third coefficient and a fourth coefficient of the vehicle; Linear fitting processing is performed on each of the preset driving speeds and the initial first coefficient corresponding to each of the preset driving speeds to obtain the first coefficient corresponding to the driving speed.

7. The method according to claim 4, characterized in that The temperature change of the brake fluid ;in, is the duration of the current time period, is the ambient temperature, is the real-time temperature of the brake disc, is the real-time temperature of the brake caliper, is the second coefficient, is the third coefficient, is the first coefficient corresponding to the driving speed, is the fourth coefficient.

8. The method according to any one of claims 1 to 7, characterized in that Determining the temperature of the brake fluid at a next moment according to the temperature change of the brake fluid includes: The temperature of the brake fluid at the next moment is determined according to the real-time temperature of the brake caliper and the temperature change of the brake fluid.

9. The method according to claim 8, characterized in that The temperature of the brake fluid at the next moment ;in, is the real-time temperature of the brake caliper, is the temperature change of the brake fluid.

10. A brake fluid high temperature warning device, characterized in that: include: A first determination module is used to determine the real-time temperature of the brake caliper in the vehicle at the current moment; and determining the temperature change of the brake fluid in the vehicle according to the real-time temperature of the brake caliper; wherein the temperature change represents the temperature change of the brake fluid in the current time period; A second determination module, used to determine the temperature of the brake fluid at a next moment according to the temperature change of the brake fluid; The early warning module is used to perform high temperature early warning processing according to the temperature of the brake fluid at the next moment.

11. An electronic device, characterized in that: include: Memory, processor; The memory stores computer-executable instructions; The processor executes the computer-executable instructions stored in the memory, so that the processor performs the method according to any one of claims 1 to 9.

12. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores computer-executable instructions, which are used to implement the method according to any one of claims 1 to 9 when executed by a processor.

13. A computer program product, characterized in that The computer program product includes a computer program, and when the computer program is executed by a processor, the method according to any one of claims 1 to 9 is implemented.

14. A vehicle, characterized in that: The vehicle comprises the electronic device as claimed in claim 11.

Images