Temperature detection method, device and equipment for brake disc in vehicle, medium and product

Abstract

The embodiment of the invention provides a temperature detection method and device for a brake disc in a vehicle, equipment, a medium and a product, and relates to the technical field of vehicles. The method comprises the steps that first temperature information collected by a wheel speed sensor corresponding to a brake disc of a vehicle is obtained; vehicle information of the vehicle is obtained; wherein the first temperature information indicates the temperature of a wheel speed sensor corresponding to a brake disc of the vehicle; according to the first temperature information, the temperature value range of the brake disc is determined; second temperature information of the brake disc is determined according to the vehicle information; wherein the second temperature information indicates the estimated temperature value of the brake disc; and if it is determined that the second temperature information is within the temperature value range, it is determined that the second temperature information is the brake disc temperature of the brake disc. Hardware cost can be saved, and the accuracy of the temperature detection method of the brake disc is improved.

Description

Technical Field

[0001] The present application relates to the field of vehicle technology, and in particular to a method, device, equipment, medium and product for detecting the temperature of a brake disc in a vehicle. Background Art

[0002] At present, the braking system of a vehicle mainly converts the kinetic energy of the vehicle into heat energy through the engagement between the brake disc and the brake pad to achieve vehicle deceleration, which causes the temperature of the brake disc of the vehicle to continue to rise. When the temperature of the brake disc is too high, it may affect the braking performance of the vehicle and bring certain safety hazards.

[0003] Therefore, real-time detection of the temperature of the vehicle's brake disc to avoid the impact of excessively high brake disc temperature on the vehicle's braking performance, thereby causing safety hazards, has become a technical problem that needs to be solved urgently.

[0004] In one possible implementation, a temperature sensor (eg, a thermocouple) may be separately installed on the brake disc of the vehicle, so that the temperature of the brake disc can be detected in real time by the temperature sensor. This implementation adds extra workload and increases the hardware cost of the vehicle. Summary of the invention

[0005] The embodiments of the present application provide a method, device, equipment, medium and product for detecting the temperature of a brake disc in a vehicle, which can save hardware costs and improve the accuracy of the method for detecting the temperature of the brake disc.

[0006] In a first aspect, an embodiment of the present application provides a method for detecting the temperature of a brake disc in a vehicle, comprising:

[0007] Acquire first temperature information collected by a wheel speed sensor corresponding to a brake disc of a vehicle; and acquire vehicle information of the vehicle; wherein the first temperature information indicates a temperature of the wheel speed sensor corresponding to the brake disc of the vehicle;

[0008] Determining a temperature range of the brake disc according to the first temperature information;

[0009] Determining second temperature information of the brake disc according to the vehicle information; wherein the second temperature information indicates an estimated temperature value of the brake disc;

[0010] If it is determined that the second temperature information is within the temperature value range, then the second temperature information is determined to be the brake disc temperature of the brake disc.

[0011] In a possible implementation manner, the brake disc and a wheel speed sensor corresponding to the brake disc of the vehicle have distance information between them; and determining a temperature value range of the brake disc according to the first temperature information includes:

[0012] Retrieving a first preset mapping relationship under the distance information; wherein the first preset mapping relationship is a correspondence between the first temperature information and the temperature value range;

[0013] A temperature value range of the brake disc is determined according to the first temperature information and the retrieved first preset mapping relationship.

[0014] In a possible implementation manner, the first temperature information is a value range of the temperature of a wheel speed sensor corresponding to a brake disc of the vehicle.

[0015] In a possible implementation, the method further includes:

[0016] Collecting the distance information between the brake disc and the wheel speed sensor corresponding to the brake disc;

[0017] Acquire a first temperature of the brake disc at different times, and acquire a second temperature of a wheel speed sensor corresponding to the brake disc at different times;

[0018] Based on the first temperature at different times and the second temperature at different times, a first preset mapping relationship under the distance information is established.

[0019] In a possible implementation, the vehicle information includes vehicle calibration parameters and first driving parameters of the vehicle during braking, and the vehicle calibration parameters are parameters corresponding to the vehicle model information and the current driving scenario of the vehicle.

[0020] In a possible implementation, obtaining vehicle information of the vehicle includes:

[0021] Determine the current driving scene of the vehicle and the vehicle model information;

[0022] According to the second preset mapping relationship, the vehicle calibration parameters corresponding to the vehicle model information and the current driving scene of the vehicle are determined; wherein the second preset mapping relationship is the correspondence between the vehicle model information, the driving scene, and the vehicle calibration parameters.

[0023] In a possible implementation manner, determining the second temperature information of the brake disc according to the vehicle information includes:

[0024] Determine first heat information of the vehicle during driving according to the vehicle calibration parameter; and determine second heat information of the vehicle during driving according to the first driving parameter; wherein the first heat information indicates the heat dissipated during the process of generating torque between the brake disc and the brake pad; and the second heat information indicates the heat generated during the process of generating torque between the brake disc and the brake pad;

[0025] The second temperature information is determined after a difference calculation is performed on the second heat information and the first heat information.

[0026] In a possible implementation manner, the vehicle information includes a second driving parameter of the vehicle during braking, an ambient temperature, and second temperature information obtained at a previous moment; determining the second temperature information of the brake disc according to the vehicle information includes:

[0027] The second driving parameter, the ambient temperature, and the second temperature information obtained at the last moment are input into a preset model to obtain the second temperature information of the brake disc.

[0028] In a possible implementation manner, if it is determined that the second temperature information is within the temperature value range, determining that the second temperature information is the brake disc temperature of the brake disc includes:

[0029] If it is determined that the second temperature information is within the preset value interval in the temperature value range, then the second temperature information is determined to be the brake disc temperature of the brake disc; wherein the maximum value of the preset value interval is the maximum value of the temperature value range minus the first preset value, and the minimum value of the preset value interval is the minimum value of the temperature value range plus the second preset value.

[0030] In a possible implementation, the method further includes:

[0031] If it is determined that the second temperature information is within the temperature value range and the second temperature information is outside the preset value interval, a first prompt information is generated and issued; wherein the first prompt information indicates that there is a possibility of failure of the wheel speed sensor and / or that there is a possibility of error in the calculation process of the second temperature information.

[0032] In a possible implementation, the method further includes:

[0033] If it is determined that the second temperature information is outside the temperature value range, the second temperature information is determined to be an erroneous temperature, a second prompt message is generated and issued, and the step of obtaining the first temperature information collected by the wheel speed sensor corresponding to the brake disc of the vehicle is repeated; wherein the second prompt message indicates that the wheel speed sensor has a fault, and / or that the calculation process of the second temperature information is wrong.

[0034] In a possible implementation, the method further includes:

[0035] If it is determined that the second temperature information is greater than a preset threshold, it is determined that the brake disc is overheated, and a third prompt information is generated and issued;

[0036] The third prompt information indicates that the brake disc is overheated.

[0037] In a second aspect, an embodiment of the present application provides a temperature detection device for a brake disc in a vehicle, comprising:

[0038] an acquisition unit, configured to acquire first temperature information collected by a wheel speed sensor corresponding to a brake disc of a vehicle; and acquire vehicle information of the vehicle; wherein the first temperature information indicates a temperature of the wheel speed sensor corresponding to the brake disc of the vehicle;

[0039] a first determining unit, configured to determine a temperature value range of the brake disc according to the first temperature information;

[0040] A second determining unit is used to determine second temperature information of the brake disc according to the vehicle information; wherein the second temperature information indicates an estimated temperature value of the brake disc;

[0041] The third determining unit is configured to determine that the second temperature information is the brake disc temperature of the brake disc if it is determined that the second temperature information is within the temperature value range.

[0042] In a possible implementation manner, the brake disc and a wheel speed sensor corresponding to the brake disc of the vehicle have distance information between them; the first determination unit is used to:

[0043] Retrieving a first preset mapping relationship under the distance information; wherein the first preset mapping relationship is a correspondence between the first temperature information and the temperature value range;

[0044] A temperature value range of the brake disc is determined according to the first temperature information and the retrieved first preset mapping relationship.

[0045] In a possible implementation manner, the first temperature information is a value range of the temperature of a wheel speed sensor corresponding to a brake disc of the vehicle.

[0046] In a possible implementation manner, the device further includes a relationship establishing unit, configured to:

[0047] Collecting the distance information between the brake disc and the wheel speed sensor corresponding to the brake disc;

[0048] Acquire a first temperature of the brake disc at different times, and acquire a second temperature of a wheel speed sensor corresponding to the brake disc at different times;

[0049] Based on the first temperature at different times and the second temperature at different times, a first preset mapping relationship under the distance information is established.

[0050] In a possible implementation, the vehicle information includes vehicle calibration parameters and first driving parameters of the vehicle during braking, and the vehicle calibration parameters are parameters corresponding to the vehicle model information and the current driving scenario of the vehicle.

[0051] In a possible implementation, the acquisition unit is configured to:

[0052] Determine the current driving scene of the vehicle and the vehicle model information;

[0053] According to the second preset mapping relationship, the vehicle calibration parameters corresponding to the vehicle model information and the current driving scene of the vehicle are determined; wherein the second preset mapping relationship is the correspondence between the vehicle model information, the driving scene, and the vehicle calibration parameters.

[0054] In a possible implementation manner, the second determining unit is configured to:

[0055] Determine first heat information of the vehicle during driving according to the vehicle calibration parameter; and determine second heat information of the vehicle during driving according to the first driving parameter; wherein the first heat information indicates the heat dissipated during the process of generating torque between the brake disc and the brake pad; and the second heat information indicates the heat generated during the process of generating torque between the brake disc and the brake pad;

[0056] The second temperature information is determined after a difference calculation is performed on the second heat information and the first heat information.

[0057] In a possible implementation manner, the vehicle information includes a second driving parameter of the vehicle during braking, an ambient temperature, and second temperature information obtained at a previous moment; in this case, the second determination unit is used to:

[0058] The second driving parameter, the ambient temperature, and the second temperature information obtained at the last moment are input into a preset model to obtain the second temperature information of the brake disc.

[0059] In a possible implementation manner, the third determining unit is configured to:

[0060] If it is determined that the second temperature information is within the preset value interval in the temperature value range, then the second temperature information is determined to be the brake disc temperature of the brake disc; wherein the maximum value of the preset value interval is the maximum value of the temperature value range minus the first preset value, and the minimum value of the preset value interval is the minimum value of the temperature value range plus the second preset value.

[0061] In a possible implementation manner, the third determining unit is further configured to:

[0062] If it is determined that the second temperature information is within the temperature value range and the second temperature information is outside the preset value interval, a first prompt information is generated and issued; wherein the first prompt information indicates that there is a possibility of failure of the wheel speed sensor and / or that there is a possibility of error in the calculation process of the second temperature information.

[0063] In a possible implementation manner, the third determining unit is further configured to:

[0064] If it is determined that the second temperature information is outside the temperature value range, the second temperature information is determined to be an erroneous temperature, a second prompt message is generated and issued, and the step of obtaining the first temperature information collected by the wheel speed sensor corresponding to the brake disc of the vehicle is repeated; wherein the second prompt message indicates that the wheel speed sensor has a fault, and / or that the calculation process of the second temperature information is wrong.

[0065] In a possible implementation, the device is also used for:

[0066] If it is determined that the second temperature information is greater than a preset threshold, it is determined that the brake disc is overheated, and a third prompt information is generated and issued;

[0067] The third prompt information indicates that the brake disc is overheated.

[0068] In a third aspect, an embodiment of the present application provides a computer device, including: a memory, a processor;

[0069] The memory stores computer-executable instructions;

[0070] 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.

[0071] 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.

[0072] In a fifth aspect, an embodiment of the present application provides a computer program product, including a computer program, which, when executed by a processor, implements the above first aspect and / or various possible implementation methods of the first aspect.

[0073] The temperature detection method, device, equipment, medium and product of the brake disc in the vehicle provided by the embodiment of the present application can obtain the first temperature information collected by the wheel speed sensor corresponding to the brake disc of the vehicle, and determine the temperature value range of the brake disc according to the first temperature information. At the same time, the vehicle information of the vehicle is obtained, and the second temperature information of the brake disc is determined according to the vehicle information, that is, the temperature value of the brake disc is determined. At this time, when it is determined that the second temperature information is within the temperature value range, it can be determined that the second temperature information is the brake disc temperature of the brake disc. This implementation method can use the information that has been collected or stored by the vehicle to realize the temperature detection of the brake disc, avoid using a separate temperature sensor to detect the temperature of the brake disc, not only save the installation process of the temperature sensor, but also reduce the hardware cost of the vehicle. At the same time, in the above implementation method, the temperature value range of the brake disc is determined by the first temperature information collected by the wheel speed sensor, and the estimated temperature value of the brake disc is detected according to the temperature value range of the brake disc, thereby improving the accuracy of temperature detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0074] 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.

[0075] Figure 1 A schematic flow chart of a method for detecting the temperature of a brake disc in a vehicle provided in an embodiment of the present application;

[0076] Figure 2 A schematic flow chart of another method for detecting the temperature of a brake disc in a vehicle provided in an embodiment of the present application;

[0077] Figure 3 A schematic diagram of the positions of a brake disc and a wheel speed sensor provided in an embodiment of the present application;

[0078] Figure 4 A schematic diagram of a temperature detection system for a brake disc in a vehicle provided in an embodiment of the present application;

[0079] Figure 5 A schematic diagram of the structure of a temperature detection device for a brake disc in a vehicle provided in an embodiment of the present application;

[0080] Figure 6 A schematic diagram of the structure of another brake disc temperature detection device in a vehicle provided in an embodiment of the present application;

[0081] Figure 7 A schematic diagram of the structure of a computer device provided in an embodiment of the present application.

[0082] 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

[0083] 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.

[0084] At present, the braking system of a vehicle mainly converts the kinetic energy of the vehicle into heat energy through the engagement between the brake disc and the brake pad (or brake drum) to achieve vehicle deceleration, which causes the temperature of the brake disc of the vehicle to continue to rise. When the temperature of the brake disc is too high, it is easy to reduce the friction coefficient between the brake disc and the brake pad of the vehicle, thereby affecting the braking performance of the vehicle and bringing certain safety hazards.

[0085] Therefore, real-time detection of the temperature of the vehicle's brake disc to avoid the impact of excessively high brake disc temperature on the vehicle's braking performance, thereby causing safety hazards, has become a technical problem that needs to be solved urgently.

[0086] In one possible implementation, a separate temperature sensor (e.g., a thermocouple) may be installed on each brake disc of the vehicle, so that the temperature of the brake disc can be detected in real time by the temperature sensor. This implementation requires reserving a location for the temperature sensor in the vehicle and installing the temperature sensor on the brake disc, which not only adds extra workload but also adds extra cost.

[0087] The temperature detection method of the brake disc in a vehicle provided by the present application can estimate the temperature of the brake disc through vehicle information and a predetermined temperature estimation method. At the same time, the existing wheel speed sensor in the vehicle is used to estimate the temperature range of the brake disc, and when it is determined that the estimated temperature is within the temperature range, the brake disc temperature of the brake disc is determined. At this time, the brake disc temperature can be accurately determined without adding an additional temperature sensor, thereby solving the above technical problems.

[0088] 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.

[0089] Figure 1 A schematic diagram of a process for detecting the temperature of a brake disc in a vehicle provided in an embodiment of the present application is shown in FIG. Figure 1 As shown, the method includes:

[0090] S101. Acquire first temperature information collected by a wheel speed sensor corresponding to a brake disc of a vehicle; and acquire vehicle information of the vehicle.

[0091] The first temperature information indicates the temperature of a wheel speed sensor corresponding to a brake disc of the vehicle.

[0092] In one example, the wheel speed sensor corresponding to the brake disc can be installed in the wheel hub unit, or on the gear of the brake disc (or brake drum), or on the gear of the vehicle's drive shaft, etc. There is no limitation on the location of the wheel speed sensor corresponding to the brake disc, which is subject to what can be implemented.

[0093] At this time, the first temperature information can be determined by acquiring the data collected by the wheel speed sensor corresponding to the brake disc of the vehicle. At this time, the first temperature information can indicate the specific temperature value corresponding to the wheel speed sensor, for example, the first temperature information can be 50 degrees, or 100 degrees, etc. Alternatively, the first temperature information can also indicate the temperature level corresponding to the wheel speed sensor, so that the temperature value range corresponding to the wheel speed sensor can be determined according to the temperature level. For example, if the temperature level indicated by the first temperature information is 3, then the temperature value range corresponding to the temperature level 3 can be determined, for example, the temperature value range corresponding to the temperature level 3 is 130-150 degrees, etc. The content indicated by the first temperature information is not specifically limited here, and it is subject to what can be implemented.

[0094] In one example, the vehicle information of the vehicle may indicate the following information: vehicle calibration parameters, vehicle driving parameters, vehicle temperature information, etc. The vehicle calibration parameters may include but are not limited to: the mass of the brake disc, the surface area of ​​the brake disc, the thickness of the brake disc, the specific heat capacity, the convective heat transfer coefficient, the thermal conductivity, the density, the convective heat transfer coefficient, etc.; the vehicle driving parameters may include but are not limited to: the total mass of the vehicle, the height of the vehicle, the driving speed of the vehicle, the braking time of the vehicle, etc.; the vehicle temperature information may indicate the ambient temperature, the second temperature information of the brake disc determined last time, etc.

[0095] At this time, part of the vehicle information that is pre-calibrated or stored can be obtained from the memory, and other vehicle information can be determined according to the sensors installed in the vehicle. For example, the brake disc mass, brake disc surface area, brake disc thickness, the brake disc second temperature information determined last time, specific heat capacity, convection heat transfer coefficient, thermal conductivity, density, etc. can be obtained from the memory, and the vehicle mass, vehicle height, vehicle speed, vehicle braking time, etc. can be determined according to the sensor.

[0096] S102: Determine a temperature range of the brake disc according to the first temperature information.

[0097] In one example, if the first temperature information indicates a specific temperature value, then the temperature error range can be determined based on the distance between the brake disc and the wheel speed sensor, and the temperature value range of the brake disc can be determined based on the temperature error range and the specific temperature value indicated by the first temperature information.

[0098] In another example, if the first temperature information indicates a temperature level, then the temperature value range corresponding to the wheel speed sensor can be determined based on the temperature level indicated by the first temperature information, and the temperature value range of the brake disc can be determined based on the temperature value range corresponding to the wheel speed sensor and the distance between the brake disc and the wheel speed sensor.

[0099] S103: Determine second temperature information of the brake disc according to the vehicle information.

[0100] The second temperature information indicates an estimated temperature value of the brake disc.

[0101] S104: If it is determined that the second temperature information is within the temperature value range, determine that the second temperature information is the brake disc temperature of the brake disc.

[0102] It can be seen from the above description that the embodiment of the present application can obtain the first temperature information collected by the wheel speed sensor corresponding to the brake disc of the vehicle, and determine the temperature value range of the brake disc according to the first temperature information. At the same time, the vehicle information of the vehicle is obtained, and the second temperature information of the brake disc is determined according to the vehicle information, that is, the temperature value of the brake disc is determined. At this time, when it is determined that the second temperature information is within the temperature value range, it can be determined that the second temperature information is the brake disc temperature of the brake disc. This implementation method can use the information that has been collected or stored by the vehicle to realize the temperature detection of the brake disc, avoid using a separate temperature sensor to detect the temperature of the brake disc, not only save the installation process of the temperature sensor, but also reduce the hardware cost of the vehicle. At the same time, in the above implementation method, the temperature value range of the brake disc is determined by the first temperature information collected by the wheel speed sensor, and the estimated temperature value of the brake disc is detected according to the temperature value range of the brake disc, thereby improving the accuracy of temperature detection.

[0103] Figure 2 A schematic flow chart of another method for detecting the temperature of a brake disc in a vehicle provided in an embodiment of the present application is shown in FIG. Figure 2 As shown, the method includes:

[0104] S201. Acquire first temperature information collected by a wheel speed sensor corresponding to a brake disc of a vehicle.

[0105] The first temperature information indicates the temperature of a wheel speed sensor corresponding to a brake disc of the vehicle.

[0106] In an example, this step can refer to the content described in S101 above, and will not be described in detail here.

[0107] S202: Determine a temperature range of the brake disc according to the first temperature information.

[0108] It can be seen from the above description that the position of the wheel speed sensor corresponding to the brake disc of the vehicle is not a fixed position and has a certain distance from the brake disc.

[0109] See also Figure 3 , Figure 3 A schematic diagram of the position of a brake disc and a wheel speed sensor provided in an embodiment of the present application, such as Figure 3 As shown, after the wheel speed sensor corresponding to the brake disc of the vehicle is installed on the gear, it can have distance information between the wheel speed sensor and the brake disc.

[0110] At this time, when there is distance information between the brake disc and the wheel speed sensor corresponding to the brake disc of the vehicle, the first preset mapping relationship under the distance information can be called up, and the temperature value range of the brake disc can be determined based on the first temperature information and the called first preset mapping relationship.

[0111] The first preset mapping relationship is a corresponding relationship between the first temperature information and the temperature value range.

[0112] In one example, different distance information may correspond to different first preset mapping relationships. For example, if the brake disc and the wheel speed sensor corresponding to the brake disc of the vehicle have distance information 1, then the first preset mapping relationship under the distance information 1 is the first preset mapping relationship 1. If the brake disc and the wheel speed sensor corresponding to the brake disc of the vehicle have distance information 2, then the first preset mapping relationship under the distance information 2 is the first preset mapping relationship 2, etc. At this time, based on the distance information between the brake disc and the wheel speed sensor corresponding to the brake disc of the vehicle, a corresponding relationship identifier may be set for the first preset mapping relationship, and the first preset mapping relationship under the distance information may be called according to the relationship identifier.

[0113] At this time, the pre-set first preset mapping relationship can be called through the distance information between the brake disc and the corresponding wheel speed sensor to determine the temperature value range of the brake disc corresponding to the first temperature information, so that the determination of the temperature value range is more accurate and flexible, and can be applicable to a variety of brake discs and wheel speed sensors, with a wide range of applications.

[0114] At this time, it is necessary to pre-set a first preset mapping relationship according to the temperature correspondence between the wheel speed sensor and the brake disc at different times under the distance information. At this time, the first preset mapping relationship can be determined according to the following steps:

[0115] First, the distance information between the brake disc and the wheel speed sensor corresponding to the brake disc is collected.

[0116] At this time, the distance information may be determined as the relationship identifier corresponding to the first preset mapping relationship.

[0117] Then, the first temperature of the brake disc at different times is obtained, and the second temperature of the wheel speed sensor corresponding to the brake disc at different times is obtained.

[0118] For example, the first temperature of the brake disc at time t can be obtained, and the second temperature of the wheel speed sensor corresponding to the brake disc at time t can be obtained, the first temperature of the brake disc at time t+1 can be obtained, and the second temperature of the wheel speed sensor corresponding to the brake disc at time t+1 can be obtained, ..., the first temperature of the brake disc at time t+n can be obtained, and the second temperature of the wheel speed sensor corresponding to the brake disc at time t+n can be obtained, etc., to obtain the first temperature of the brake disc at different times and the second temperature of the wheel speed sensor corresponding to the brake disc at different times.

[0119] Finally, based on the first temperature at different times and the second temperature at different times, a first preset mapping relationship under the distance information is established.

[0120] This implementation can make the determined first preset mapping relationship match the actual scene, thereby improving the accuracy and credibility of the first preset mapping relationship.

[0121] In a possible implementation, the first temperature information is the temperature range of a wheel speed sensor corresponding to a brake disc of the vehicle. At this time, the endpoint value of the temperature range of the brake disc can be determined from a first preset mapping relationship based on the endpoint value of the temperature range of the wheel speed sensor corresponding to the first temperature information, thereby determining the temperature range of the brake disc.

[0122] In another possible implementation, the first temperature information may also be the temperature value of a wheel speed sensor corresponding to the brake disc of the vehicle. In this case, the middle value of the temperature value range of the brake disc may be determined from the first preset mapping relationship according to the temperature value of the wheel speed sensor corresponding to the first temperature information, and the temperature value range of the brake disc may be determined according to the middle value and the temperature error range. The temperature error range may be a value pre-set based on experience, for example, the temperature error range may be ±0.5 degrees, ±1 degree, ±3 degrees, etc.

[0123] S203: Acquire vehicle information of the vehicle.

[0124] In one example, the vehicle information obtained is the vehicle calibration parameters and the first driving parameters of the vehicle during the braking process, wherein the vehicle calibration parameters are parameters corresponding to the vehicle model information and the current driving scene of the vehicle. For example, the parameters corresponding to the vehicle model information may include but are not limited to: vehicle mass, brake disc mass, brake disc thickness, brake disc surface area, brake disc specific heat capacity, brake disc thermal conductivity coefficient, convection heat transfer coefficient, brake disc density, etc. The parameters corresponding to the vehicle driving scene include but are not limited to: ambient temperature, convection heat transfer coefficient, etc. At this time, the vehicle driving scene can indicate the driving environment of the vehicle, for example, the driving scene can be a sunny scene, a strong wind scene, a highway driving scene, a mountain road driving scene, etc. The first driving parameter of the vehicle during the braking process may at least include: the initial driving speed of the vehicle, the current driving speed of the vehicle, the total mass of the vehicle during driving, etc.

[0125] At this time, the vehicle calibration parameters of the vehicle can be used to determine the heat dissipated by the vehicle during the braking process. The first driving parameter of the vehicle during the braking process is used to determine the heat generated by the vehicle during the braking process. At this time, the vehicle information can be obtained through the following steps:

[0126] First, determine the current driving scenario of the vehicle and the vehicle model information.

[0127] At this time, the current driving scene of the vehicle can be determined by determining the weather conditions and location information during the vehicle's driving process.

[0128] In one example, the vehicle model information may indicate the model of the vehicle. In this case, the vehicle model information may be determined by determining the model of the vehicle.

[0129] Then, according to the second preset mapping relationship, the vehicle calibration parameters corresponding to the vehicle model information and the current driving scene of the vehicle are determined.

[0130] Among them, the second preset mapping relationship is the correspondence between vehicle model information, driving scenario, and vehicle calibration parameters.

[0131] In one example, the second preset mapping relationship can be obtained by summarizing vehicle calibration parameters under different preset vehicle model information and / or different driving scenarios.

[0132] Then, the steps described in the following S204 to S205 are executed to determine the second temperature information of the brake disc, wherein the second temperature information indicates the estimated temperature value of the brake disc.

[0133] S204, determining first heat information of the vehicle during driving according to the vehicle calibration parameters; and determining second heat information of the vehicle during driving according to the first driving parameters.

[0134] The first heat information indicates the heat dissipated in the process of generating torque between the brake disc and the brake pad; the second heat information indicates the heat generated in the process of generating torque between the brake disc and the brake pad.

[0135] S205: Determine second temperature information after calculating the difference between the second heat information and the first heat information.

[0136] In one example, after obtaining the vehicle calibration parameters and the first driving parameters, a preset calculation formula can be obtained, and the first heat information and the second heat information of the vehicle during driving are calculated according to the preset calculation formula, and the second temperature information is determined after the difference between the second heat information and the first heat information is calculated, thereby realizing fast and accurate determination of the second temperature information.

[0137] In an example, the preset calculation formula can refer to the following formula (1) to formula (4).

[0138] m×c×ΔT=ΔQ2-ΔQ1 (1)

[0139] ΔQ2=P brk ·η (2)

[0140] ΔQ1=e·σ·A·(T1 4 -T env 4 )+h·A·(T1-T env )+γ·A·(T1-T env ) / d (3)

[0141] T2=T1+ΔT (4)

[0142] Wherein, in formula (1), m is the mass of the brake disc, c represents the specific heat capacity of the brake disc, ΔT represents the temperature change of the brake disc per unit time, ΔQ2 represents the second heat information generated per unit time, that is, the heat generated in the process of generating torque between the brake disc and the brake pad per unit time, and ΔQ1 represents the first heat information generated per unit time, that is, the heat dissipated in the process of generating torque between the brake disc and the brake pad per unit time.

[0143] In formula (2), P brk represents friction power, and η represents the efficiency coefficient of torque generating heat.

[0144] In formula (3), e represents the emissivity of the brake disc surface, σ represents the Boltzmann constant, A represents the surface area of ​​the brake disc, and T env represents the ambient temperature, h represents the convection heat transfer coefficient of the brake disc, γ represents the thermal conductivity of the brake disc, and d represents the thickness of the brake disc.

[0145] In formula (4), T1 represents the problem of the brake disc at the previous moment, ΔT represents the change of the brake disc temperature per unit time, and T2 represents the current temperature of the brake disc, that is, the second temperature information.

[0146] It can be known from the above-mentioned preset calculation formula that after calculating the first heat information (i.e., ΔQ1) and the second heat information (i.e., ΔQ2) of the vehicle during driving according to the preset calculation formula, the difference between the first heat information and the second heat information can be calculated to determine the change in the brake disc temperature per unit time, and thus the temperature of the brake disc can be determined based on the temperature of the brake disc at the previous moment and the change in the temperature of the brake disc, that is, the second temperature information can be determined.

[0147] The above preset calculation formula is not limited here, and is subject to achievable performance.

[0148] The inventors found that when determining the second temperature information according to a preset calculation formula, a large number of vehicle calibration parameters need to be set in advance. If the vehicle calibration parameters are not set in advance, the second temperature information cannot be determined, which in turn affects the scope of application of the brake disc temperature detection method.

[0149] Based on this, an embodiment of the present application also provides a preset model to estimate the brake disc temperature of the brake disc. At this time, the acquired vehicle information may include: the second driving parameter of the vehicle during driving, the ambient temperature, and the second temperature information obtained at the previous moment.

[0150] Among them, the second driving parameter may at least include: the driving speed of the vehicle at the previous moment, the driving speed of the vehicle at the current moment, the height information of the vehicle at the previous moment, the height information of the vehicle at the current moment, the total mass of the vehicle, etc.

[0151] After the vehicle information is acquired, the step described in the following S206 is executed to determine the second temperature information of the brake disc.

[0152] S206: Input the second driving parameter, the ambient temperature, and the second temperature information obtained at the last moment into a preset model to obtain the second temperature information of the brake disc.

[0153] In one example, the preset model can be a pre-trained neural network model, such as an MLP (Multi-Layer Perceptron) model, or an LSTM (Long Short-Term Memory, LSTM) model, etc. There is no limitation on the type of the preset model here, which is subject to implementation.

[0154] In one example, when training a preset model, a training data set can be constructed based on the pre-collected second driving parameter, ambient temperature, and second temperature information at various times, and the preset model can be trained based on the training data set to obtain a trained preset model.

[0155] In this implementation, the second temperature of the brake disc can be determined by a pre-trained preset model, thereby reducing the vehicle calibration parameters required to determine the second temperature information, reducing the workload, and making the brake disc temperature detection method more applicable. At the same time, determining the second temperature information by a preset model can also improve the maintainability of the brake disc temperature detection method, which helps to improve / optimize the brake disc temperature detection method according to actual needs.

[0156] S207: If it is determined that the second temperature information is within the temperature value range, determine that the second temperature information is the brake disc temperature of the brake disc.

[0157] In one example, the confidence level corresponding to the second temperature information can be determined based on the relationship between the second temperature information and the temperature value range. For example, when it is determined that the second temperature information is within the temperature value range, the confidence level corresponding to the second temperature information can be determined to be 1, and when it is determined that the second temperature information is outside the temperature value range, the confidence level corresponding to the second temperature information can be determined to be 0. At this time, the second temperature information and the confidence level can be determined as the temperature detection result of the brake disc, and the temperature detection result can be transmitted to the control system of the vehicle so that the control system of the vehicle makes a decision based on the temperature detection result. For example, the control system of the vehicle can determine whether to display the second temperature information in the instrument panel of the vehicle based on the temperature detection result. At this time, more information can be provided to assist the control system of the vehicle in making decisions, or to assist the driver of the vehicle in making decisions, etc., which not only improves the accuracy and reliability of the decision, but also improves the performance of the temperature detection method of the brake disc.

[0158] In one example, based on the relationship between the second temperature information and the temperature value range, the number of confidence levels corresponding to the determined second temperature information can be 2, such as 1 and 0 as mentioned above, or more. The number of confidence levels of the determined second temperature information is not limited here and is based on meeting actual needs.

[0159] In one example, assuming that the number of confidences corresponding to the second temperature information is greater than 2, then a preset value interval can be set within the temperature value range so that the second temperature information can correspond to multiple confidences. For example, when it is determined that the second temperature information is within the preset value interval, the confidence corresponding to the second temperature information can be determined to be 1; when it is determined that the second temperature information is outside the preset value interval and within the temperature value range, the confidence corresponding to the second temperature information can be determined to be 2; when it is determined that the second temperature information is outside the temperature value range, the confidence corresponding to the second temperature information can be determined to be 3. At this time, a confidence of 1 indicates that the second temperature information is accurate, a confidence of 2 indicates that the accuracy of the second temperature information is poor, and a confidence of 3 indicates that the second temperature information is inaccurate.

[0160] At this time, if it is determined that the second temperature information is within the preset value interval in the temperature value range, the second temperature information is determined to be the brake disc temperature of the brake disc. The maximum value of the preset value interval is the maximum value of the temperature value range minus the first preset value, and the minimum value of the preset value interval is the minimum value of the temperature value range plus the second preset value. For example, if the temperature value range is 100-130 degrees and the first preset value is 10, then the preset value interval is 110-120 degrees.

[0161] Here, the first preset value can be determined according to the width of the temperature value range, for example, the first preset value can be 10% of the width of the temperature value range. For example, the first preset value can be that the temperature value range is 100-130 degrees, then the width of the temperature value range is 30, and at this time, the first preset value can be determined to be 3. The value of the first preset value is not limited here, and it is based on meeting actual needs.

[0162] If it is determined that the second temperature information is within the temperature value range and outside the preset value interval, a first prompt information is generated and issued, wherein the first prompt information indicates that the wheel speed sensor may fail and / or that the calculation process of the second temperature information may be wrong.

[0163] At this time, the display style of the first prompt information can be a yellow exclamation mark, a yellow flashing signal, or a flashing yellow text message (for example, the text message can be a temperature detection error), etc. The display style of the first prompt information is not limited here, subject to what can be implemented.

[0164] This implementation can provide a timely warning before the wheel speed sensor completely fails and / or before the calculation process of the second temperature information is completely erroneous, so that the driver can perform maintenance on the vehicle in a timely manner after receiving the first prompt information, thereby avoiding safety accidents caused by temperature detection errors.

[0165] S208. If it is determined that the second temperature information is outside the temperature range, the second temperature information is determined to be an erroneous temperature, a second prompt message is generated and issued, and the step of obtaining the first temperature information collected by the wheel speed sensor corresponding to the brake disc of the vehicle is repeated.

[0166] The second prompt information indicates that the wheel speed sensor fails and / or that the calculation process of the second temperature information is wrong.

[0167] In one example, the display style of the second prompt information is different from the display style of the first prompt information. In this case, the display style of the second prompt information can be a red exclamation mark, a red flashing signal, or a flashing red text message, etc. At the same time, a voice message can be generated and played according to the second prompt information. For example, the voice message can be a whistle or "fault", etc. The display style of the second prompt information is not limited here. At this time, the driver can be reminded of the potential safety hazard of the vehicle through the conspicuous and effective second prompt information, so that the driver can maintain the vehicle nearby, or stop and wait for maintenance personnel, etc., thereby avoiding safety accidents caused by incorrect temperature detection of the brake disc.

[0168] In one example, the display position of the second prompt information may be the same as the display position of the first prompt information. Here, there is no limitation on the display position of the first prompt information (or the second prompt information), which is subject to what can be implemented.

[0169] In one example, by repeatedly executing the step of obtaining first temperature information collected by a wheel speed sensor corresponding to a brake disc of a vehicle to determine second temperature information of the brake disc, misjudgment can be avoided by means of multiple detections.

[0170] S209: If it is determined that the second temperature information is greater than the preset threshold, it is determined that the brake disc is overheated, and a third prompt information is generated and issued.

[0171] The third prompt information indicates that the brake disc is overheating.

[0172] At this time, the display style of the third prompt information can be a red thermometer, a red temperature mark, etc., and the display style of the third prompt information is not limited here. Among them, the display style and display position of the third prompt information are different from the above-mentioned second prompt information (or first prompt information).

[0173] This implementation can use the third prompt information to inform the driver of brake disc overheating, so that the driver can adjust his decision (for example, change from regular braking to indirect braking) to avoid the braking performance of the vehicle being affected by brake disc overheating, thereby causing safety hazards.

[0174] Figure 4 A schematic diagram of a temperature detection system for a brake disc in a vehicle provided in an embodiment of the present application is shown in FIG. Figure 4 As shown, the system may include a temperature indication module, a temperature estimation module, and a temperature evaluation and decision module. The temperature indication module is used to obtain first temperature information collected by a wheel speed sensor corresponding to a brake disc of a vehicle, and to retrieve a first preset mapping relationship under distance information between the brake disc and the wheel speed sensor corresponding to the brake disc of the vehicle, so as to determine a temperature value range of the brake disc according to the first temperature information and the first preset mapping relationship.

[0175] At the same time, the temperature estimation module obtains the vehicle information of the vehicle, and determines the second temperature information of the brake disc based on the vehicle information. Afterwards, the temperature value range and the second temperature information of the brake disc can be sent to the temperature evaluation and decision module, so that the temperature evaluation and decision module evaluates and makes decisions based on the temperature value range and the second temperature information to output the brake disc temperature, and / or prompt information (for example, the first prompt information, the second prompt information and the third prompt information mentioned above, etc.). For example, if it is determined that the second temperature information is within the temperature value range, the second temperature information is determined to be the brake disc temperature of the brake disc, and the brake disc temperature is output. For another example, if it is determined that the second temperature information is outside the temperature value range, a second prompt information, etc. can be generated and issued.

[0176] Figure 5 A schematic diagram of a temperature detection device for a brake disc in a vehicle provided in an embodiment of the present application is shown in FIG. Figure 5 As shown, the temperature detection device 500 of the brake disc in the vehicle includes:

[0177] The acquisition unit 501 is used to acquire first temperature information collected by a wheel speed sensor corresponding to a brake disc of a vehicle; and acquire vehicle information of the vehicle; wherein the first temperature information indicates the temperature of the wheel speed sensor corresponding to the brake disc of the vehicle.

[0178] The first determining unit 502 is used to determine a temperature value range of the brake disc according to the first temperature information.

[0179] The second determining unit 503 is used to determine second temperature information of the brake disc according to the vehicle information; wherein the second temperature information indicates an estimated temperature value of the brake disc.

[0180] The third determining unit 504 is configured to determine that the second temperature information is the brake disc temperature of the brake disc if it is determined that the second temperature information is within the temperature value range.

[0181] Figure 6 A schematic diagram of the structure of another brake disc temperature detection device in a vehicle provided in an embodiment of the present application, such as Figure 6 As shown, the temperature detection device 600 of the brake disc in the vehicle includes:

[0182] The acquisition unit 601 is used to acquire first temperature information collected by a wheel speed sensor corresponding to a brake disc of a vehicle; and acquire vehicle information of the vehicle; wherein the first temperature information indicates the temperature of the wheel speed sensor corresponding to the brake disc of the vehicle.

[0183] The first determining unit 602 is used to determine a temperature value range of the brake disc according to the first temperature information.

[0184] The second determining unit 603 is used to determine second temperature information of the brake disc according to the vehicle information; wherein the second temperature information indicates an estimated temperature value of the brake disc.

[0185] The third determining unit 604 is configured to determine that the second temperature information is the brake disc temperature of the brake disc if it is determined that the second temperature information is within the temperature value range.

[0186] In a possible implementation manner, the brake disc and the wheel speed sensor corresponding to the brake disc of the vehicle have distance information between them; the first determination unit 602 is used to:

[0187] Retrieving a first preset mapping relationship under the distance information; wherein the first preset mapping relationship is a correspondence between the first temperature information and the temperature value range;

[0188] A temperature value range of the brake disc is determined according to the first temperature information and the retrieved first preset mapping relationship.

[0189] In a possible implementation manner, the first temperature information is a value range of the temperature of a wheel speed sensor corresponding to a brake disc of the vehicle.

[0190] In a possible implementation manner, the device further includes a relationship establishing unit 605, configured to:

[0191] Collecting the distance information between the brake disc and the wheel speed sensor corresponding to the brake disc;

[0192] Acquire a first temperature of the brake disc at different times, and acquire a second temperature of a wheel speed sensor corresponding to the brake disc at different times;

[0193] Based on the first temperature at different times and the second temperature at different times, a first preset mapping relationship under the distance information is established.

[0194] In a possible implementation, the vehicle information includes vehicle calibration parameters and first driving parameters of the vehicle during braking, where the vehicle calibration parameters are parameters corresponding to the vehicle model information and the current driving scenario of the vehicle.

[0195] In a possible implementation, the acquiring unit 601 is configured to:

[0196] Determine the current driving scene of the vehicle and the vehicle model information;

[0197] According to the second preset mapping relationship, the vehicle calibration parameters corresponding to the vehicle model information and the current driving scene of the vehicle are determined; wherein the second preset mapping relationship is the correspondence between the vehicle model information, the driving scene, and the vehicle calibration parameters.

[0198] In a possible implementation manner, the second determining unit 603 is configured to:

[0199] Determine first heat information of the vehicle during driving according to the vehicle calibration parameters; and determine second heat information of the vehicle during driving according to the first driving parameters; wherein the first heat information indicates the heat dissipated during the process of generating torque between the brake disc and the brake pad; and the second heat information indicates the heat generated during the process of generating torque between the brake disc and the brake pad;

[0200] After performing a difference calculation on the second heat information and the first heat information, the second temperature information is determined.

[0201] In a possible implementation manner, the vehicle information includes a second driving parameter of the vehicle during braking, an ambient temperature, and second temperature information obtained at a previous moment; at this time, the second determining unit 603 is used to:

[0202] The second driving parameter, the ambient temperature, and the second temperature information obtained at the last moment are input into the preset model to obtain the second temperature information of the brake disc.

[0203] In a possible implementation manner, the third determining unit 604 is configured to:

[0204] If it is determined that the second temperature information is within the preset value interval in the temperature value range, the second temperature information is determined to be the brake disc temperature of the brake disc; wherein the maximum value of the preset value interval is the maximum value of the temperature value range minus the first preset value, and the minimum value of the preset value interval is the minimum value of the temperature value range plus the second preset value.

[0205] In a possible implementation manner, the third determining unit 604 is further configured to:

[0206] If it is determined that the second temperature information is within the temperature value range and the second temperature information is outside the preset value interval, a first prompt information is generated and issued; wherein the first prompt information indicates that there is a possibility of failure of the wheel speed sensor and / or that there is a possibility of error in the calculation process of the second temperature information.

[0207] In a possible implementation manner, the third determining unit 604 is further configured to:

[0208] If it is determined that the second temperature information is outside the temperature value range, the second temperature information is determined to be an erroneous temperature, a second prompt message is generated and issued, and the step of obtaining the first temperature information collected by the wheel speed sensor corresponding to the brake disc of the vehicle is repeated; wherein the second prompt message indicates that the wheel speed sensor has a fault, and / or that the calculation process of the second temperature information is wrong.

[0209] In a possible implementation, the device is also used for:

[0210] If it is determined that the second temperature information is greater than a preset threshold, it is determined that the brake disc is overheated, and a third prompt information is generated and issued;

[0211] The third prompt information indicates that the brake disc is overheating.

[0212] The temperature detection device for the brake disc in a vehicle provided in this embodiment can execute the method provided in the above method embodiment, and its implementation principle and technical effect are similar, so this embodiment will not be described in detail here.

[0213] Figure 7 This is a schematic diagram of the structure of a computer device provided in an embodiment of the present application. Figure 7 As shown, the computer device 700 provided in this embodiment includes: at least one processor 701 and a memory 702. Optionally, the computer device 700 also includes a communication component 703. The processor 701, the memory 702 and the communication component 703 are connected via a bus 704.

[0214] In a specific implementation process, at least one processor 701 executes the computer-executable instructions stored in the memory 702, so that at least one processor 701 executes the above method.

[0215] The specific implementation process of the processor 701 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.

[0216] 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. 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.

[0217] The memory may include a high-speed memory (Random Access Memory, RAM), and may also include a non-volatile memory (Non-volatile Memory, NVM), such as at least one disk memory.

[0218] The bus may be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, or an Extended Industry Standard Architecture (EISA) bus, etc. The bus may be divided into an address bus, a data bus, a control bus, etc. For ease of representation, the bus in the drawings of the present application is not limited to only one bus or one type of bus.

[0219] The present application also provides a computer program product, including a computer program, which implements the above method when executed by a processor.

[0220] The present application also provides a computer-readable storage medium, in which computer-executable instructions are stored. When a processor executes the computer-executable instructions, the above method is implemented.

[0221] 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 (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), 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.

[0222] 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 a component of the processor. The processor and the readable storage medium can be located in an application specific integrated circuit (Application Specific Integrated Circuits, referred to as: ASIC). Of course, the processor and the readable storage medium can also exist in the device as discrete components.

[0223] The division of units is only a logical function division, and there may be other divisions in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be an indirect coupling or communication connection through some interface, device or unit, which can be electrical, mechanical or other forms.

[0224] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0225] In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0226] 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.

[0227] Those skilled in the art can understand that all or part of the steps of implementing the above-mentioned method embodiments can be completed by hardware related to 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; and the aforementioned storage medium includes: ROM, RAM, disk or optical disk and other media that can store program codes.

[0228] 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 method for detecting the temperature of a brake disc in a vehicle, characterized in that: include: Acquiring first temperature information collected by a wheel speed sensor corresponding to a brake disc of the vehicle; and obtaining vehicle information of the vehicle; wherein the first temperature information indicates the temperature of a wheel speed sensor corresponding to a brake disc of the vehicle; Determining a temperature range of the brake disc according to the first temperature information; Determining second temperature information of the brake disc according to the vehicle information; wherein the second temperature information indicates an estimated temperature value of the brake disc; If it is determined that the second temperature information is within the temperature value range, then the second temperature information is determined to be the brake disc temperature of the brake disc.

2. The method according to claim 1, characterized in that The brake disc and a wheel speed sensor corresponding to the brake disc of the vehicle have distance information between them; and according to the first temperature information, determining a temperature range of the brake disc includes: Retrieving a first preset mapping relationship under the distance information; wherein the first preset mapping relationship is a correspondence between the first temperature information and the temperature value range; A temperature value range of the brake disc is determined according to the first temperature information and the retrieved first preset mapping relationship.

3. The method according to claim 2, characterized in that The first temperature information is a value range of the temperature of a wheel speed sensor corresponding to a brake disc of the vehicle.

4. The method according to claim 2, characterized in that: The method further comprises: Collecting the distance information between the brake disc and the wheel speed sensor corresponding to the brake disc; Acquire a first temperature of the brake disc at different times, and acquire a second temperature of a wheel speed sensor corresponding to the brake disc at different times; Based on the first temperature at different times and the second temperature at different times, a first preset mapping relationship under the distance information is established.

5. The method according to claim 1, characterized in that The vehicle information includes vehicle calibration parameters and first driving parameters of the vehicle during braking. The vehicle calibration parameters are parameters corresponding to the vehicle model information and the current driving scene of the vehicle.

6. The method according to claim 5, characterized in that Obtaining vehicle information of the vehicle, including: Determine the current driving scene of the vehicle and the vehicle model information; According to the second preset mapping relationship, the vehicle calibration parameters corresponding to the vehicle model information and the current driving scene of the vehicle are determined; wherein the second preset mapping relationship is the correspondence between the vehicle model information, the driving scene, and the vehicle calibration parameters.

7. The method according to claim 5, characterized in that Determining second temperature information of the brake disc according to the vehicle information includes: Determine first heat information of the vehicle during driving according to the vehicle calibration parameter; and determine second heat information of the vehicle during driving according to the first driving parameter; wherein the first heat information indicates the heat dissipated during the process of generating torque between the brake disc and the brake pad; and the second heat information indicates the heat generated during the process of generating torque between the brake disc and the brake pad; The second temperature information is determined after a difference calculation is performed on the second heat information and the first heat information.

8. The method according to claim 1, characterized in that The vehicle information includes a second driving parameter of the vehicle during braking, an ambient temperature, and second temperature information obtained at the last moment; Determining second temperature information of the brake disc according to the vehicle information includes: The second driving parameter, the ambient temperature, and the second temperature information obtained at the last moment are input into a preset model to obtain the second temperature information of the brake disc.

9. The method according to any one of claims 1 to 8, characterized in that If it is determined that the second temperature information is within the temperature value range, determining that the second temperature information is the brake disc temperature of the brake disc includes: If it is determined that the second temperature information is within the preset value interval in the temperature value range, then the second temperature information is determined to be the brake disc temperature of the brake disc; wherein the maximum value of the preset value interval is the maximum value of the temperature value range minus the first preset value, and the minimum value of the preset value interval is the minimum value of the temperature value range plus the second preset value.

10. The method according to claim 9, characterized in that The method further comprises: If it is determined that the second temperature information is within the temperature value range and the second temperature information is outside the preset value interval, a first prompt information is generated and issued; wherein the first prompt information indicates that there is a possibility of failure of the wheel speed sensor and / or that there is a possibility of error in the calculation process of the second temperature information.

11. The method according to any one of claims 1 to 8, characterized in that The method further comprises: If it is determined that the second temperature information is outside the temperature value range, the second temperature information is determined to be an erroneous temperature, a second prompt message is generated and issued, and the step of obtaining the first temperature information collected by the wheel speed sensor corresponding to the brake disc of the vehicle is repeated; wherein the second prompt message indicates that the wheel speed sensor has a fault, and / or that the calculation process of the second temperature information is wrong.

12. The method according to any one of claims 1 to 8, characterized in that The method further comprises: If it is determined that the second temperature information is greater than a preset threshold, it is determined that the brake disc is overheated, and a third prompt information is generated and issued; The third prompt information indicates that the brake disc is overheated.

13. A temperature detection device for a brake disc in a vehicle, characterized in that: include: an acquisition unit, configured to acquire first temperature information collected by a wheel speed sensor corresponding to a brake disc of the vehicle; and obtaining vehicle information of the vehicle; wherein the first temperature information indicates the temperature of a wheel speed sensor corresponding to a brake disc of the vehicle; a first determining unit, configured to determine a temperature value range of the brake disc according to the first temperature information; A second determining unit is used to determine second temperature information of the brake disc according to the vehicle information; wherein the second temperature information indicates an estimated temperature value of the brake disc; The third determining unit is configured to determine that the second temperature information is the brake disc temperature of the brake disc if it is determined that the second temperature information is within the temperature value range.

14. A computer 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 12.

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

16. A computer program product, comprising a computer program, wherein when the computer program is executed by a processor, the method according to any one of claims 1 to 12 is implemented.

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