Defrosting control method and system for outside rear-view mirror of vehicle and medium

Abstract

The invention provides a defrosting control method and system for a vehicle outside rear-view mirror and a medium, and relates to the technical field of vehicle control. The method comprises the steps that when it is detected that a vehicle is in an intelligent defrosting mode, current vehicle environment information is obtained, and the vehicle environment information comprises temperature information and humidity information; according to the vehicle environment information, whether the vehicle is in an easy-to-frost state or not is determined; if the external vehicle-mounted camera is in the easy frosting state, whether frost is formed on the surface of the external vehicle-mounted camera or not is determined, and when frost is formed, first heating power for enabling frost and snow on the surface of the external vehicle-mounted camera to disappear is determined; determining second heating power for enabling frost and snow on the surface of the outside rear-view mirror to disappear according to the first heating power; and the heating power of the outside rear-view mirror is adjusted according to the second heating power, so that the outside rear-view mirror is defrosted. According to the method provided by the invention, the defrosting accuracy and convenience of the outside rear-view mirror are improved, so that the safety of vehicle driving is improved.

Description

Technical Field

[0001] The present application relates to the field of vehicle control technology, and in particular to a defrosting control method, system and medium for a vehicle exterior rearview mirror. Background Art

[0002] Vehicle exterior rearview mirrors are reflectors installed on the left and right sides of the vehicle, usually located in front of the door, designed to help the driver observe the situation behind and to the sides of the vehicle, especially when changing lanes, overtaking or reversing.

[0003] In order to improve driving safety, the exterior rearview mirror usually includes a heating system to heat and defrost when the exterior rearview mirror surface is frosted or covered with frost and snow, so as to avoid safety problems caused by the driver's field of vision being blocked. In the related art, the exterior rearview mirror is generally defrosted by manually controlling the heating system of the exterior rearview mirror, but this method cannot perform precise defrosting control, causing inconvenience in use, and will distract the driver's attention, affecting driving safety.

[0004] Therefore, there is a need for a defrosting control scheme for vehicle exterior rearview mirrors that can improve the accuracy and convenience of defrosting the exterior rearview mirrors, thereby improving the safety of vehicle driving. Summary of the invention

[0005] The embodiments of the present application provide a defrost control method, system and medium for a vehicle exterior rearview mirror, which can improve the accuracy and convenience of defrosting the exterior rearview mirror, thereby improving the safety of vehicle driving.

[0006] In a first aspect, an embodiment of the present application provides a defrosting control method for an exterior rearview mirror of a vehicle, comprising:

[0007] When it is detected that the vehicle is in the intelligent defrost mode, current vehicle environment information is obtained, where the vehicle environment information includes temperature information and humidity information;

[0008] determining, based on the vehicle environment information, whether the vehicle is in a frosting-prone state;

[0009] If the camera is in a frosting prone state, determining whether frost is formed on the surface of the external vehicle camera, and if frost is formed, determining a first heating power to make the frost and snow on the surface of the external vehicle camera disappear; and determining a second heating power to make the frost and snow on the surface of the exterior rearview mirror disappear according to the first heating power;

[0010] The heating power of the exterior rearview mirror is adjusted according to the second heating power to defrost the exterior rearview mirror.

[0011] In a possible implementation manner, determining whether frost is formed on the surface of the external vehicle-mounted camera includes:

[0012] Acquire the lens images captured by the external vehicle-mounted camera in real time;

[0013] According to the lens parameters corresponding to the external vehicle-mounted camera, the lens picture is standardized to obtain a standardized picture, wherein the lens parameters are obtained by pre-calibrating the external vehicle-mounted camera;

[0014] The standardized image is tested for clarity to determine whether frost is formed on the surface of the external vehicle-mounted camera.

[0015] In a possible implementation manner, before determining whether frost is formed on the surface of the external vehicle-mounted camera, the method includes:

[0016] Determining whether a heating system of the exterior rearview mirror is turned on;

[0017] If it is not turned on, controlling the heating system to turn on and adjust to the lowest heating gear;

[0018] If it is turned on, the step of determining whether frost is formed on the surface of the external vehicle camera is performed.

[0019] In a possible implementation manner, determining the first heating power for eliminating frost and snow on the surface of the external vehicle-mounted camera includes:

[0020] Determining a current heating power of the external vehicle-mounted camera;

[0021] According to the current heating power and the preset power difference, gradually increasing the heating power of the external vehicle camera until it is detected that the frost and snow on the surface of the external vehicle camera disappear;

[0022] The first heating power is determined according to the minimum heating power at which frost and snow on the surface of the external vehicle-mounted camera are detected to disappear.

[0023] In a possible implementation manner, determining the second heating power for eliminating frost and snow on the surface of the exterior rearview mirror according to the first heating power includes:

[0024] Determining a target power adjustment value corresponding to the vehicle environment information according to a preset correspondence relationship between the environment information and the power adjustment value, wherein the correspondence between the environment information and the power adjustment value is obtained by calibrating the external vehicle camera and the exterior rearview mirror respectively under different temperature and humidity conditions;

[0025] Determining a second heating power for eliminating frost and snow on the surface of the exterior rearview mirror according to the first heating power and the target power adjustment value;

[0026] Among them, when the vehicle is in the vehicle environment information, the temperature rise of the external vehicle camera under the first heating power per unit time is the same as the temperature rise of the exterior rearview mirror under the second heating power.

[0027] In a possible implementation manner, adjusting the heating power of the exterior rearview mirror according to the second heating power includes:

[0028] heating the exterior rearview mirror according to the second heating power;

[0029] After the preset heating time, the heating power of the exterior rearview mirror is adjusted to 0.

[0030] In a possible implementation manner, determining whether the vehicle is in a frosting-prone state according to the vehicle environment information includes:

[0031] Determining whether the vehicle environment information is within a preset frosting-prone temperature and humidity range; if within the preset frosting-prone temperature and humidity range, determining that the vehicle is in a frosting-prone state; if not within the preset frosting-prone temperature and humidity range, determining that the vehicle is not in a frosting-prone state;

[0032] or,

[0033] Acquire the frosting temperature and humidity conditions obtained by pre-calibration of the exterior rearview mirror, wherein the frosting temperature and humidity conditions are obtained based on the ambient temperature and humidity when frost forms on the surface of the exterior rearview mirror, as well as preset temperature thresholds and humidity thresholds; determine whether the vehicle environmental information meets the frosting temperature and humidity conditions; if so, determine that the vehicle is in a frosting-prone state; if not, determine that the vehicle is not in a frosting-prone state.

[0034] In a second aspect, an embodiment of the present application provides a vehicle body domain controller, including:

[0035] An acquisition module, used to acquire current vehicle environment information when detecting that the vehicle is in an intelligent defrost mode, wherein the vehicle environment information includes temperature information and humidity information;

[0036] A processing module is used to determine whether the vehicle is in a frosting-prone state based on the vehicle environmental information; if in a frosting-prone state, determine whether frost is formed on the surface of an external vehicle camera, and when frost is formed, determine a first heating power to make the frost and snow on the surface of the external vehicle camera disappear; and determine a second heating power to make the frost and snow on the surface of an exterior rearview mirror disappear based on the first heating power; and adjust the heating power of the exterior rearview mirror based on the second heating power to defrost the exterior rearview mirror.

[0037] In a third aspect, an embodiment of the present application provides another vehicle body domain controller, comprising: a processor, and a memory communicatively connected to the processor;

[0038] Memory is used to store computer executable instructions;

[0039] The processor is used to execute the computer-executable instructions stored in the memory, so that the processor executes the above-mentioned first aspect and / or various possible implementations of the first aspect.

[0040] In a fourth aspect, an embodiment of the present application provides a defrost control system for an exterior rearview mirror of a vehicle, comprising: an exterior rearview mirror, an external vehicle-mounted camera, and a vehicle body domain controller as described in the third aspect;

[0041] The vehicle body domain controller is respectively connected to the exterior rearview mirror and the external vehicle camera for communication, and both the exterior rearview mirror and the external vehicle camera include a heating system.

[0042] In a fifth aspect, an embodiment of the present application provides a computer-readable storage medium, in which computer execution instructions are stored. When the computer execution instructions are executed by a processor, they are used to implement the above-mentioned first aspect and / or various possible implementation methods of the first aspect.

[0043] In a sixth aspect, an embodiment of the present application provides a computer program product, including a computer program, which, when executed by a processor, is used to implement the above-mentioned first aspect and / or various possible implementation methods of the first aspect.

[0044] The embodiment of the present application provides a defrosting control method, system and medium for the exterior rearview mirror of a vehicle, and provides an automated intelligent defrosting control solution. When the vehicle is detected to be in the intelligent defrosting mode, the body domain controller can preliminarily determine whether the vehicle is in a frosting-prone state through the current vehicle environment information, and when the vehicle is in a frosting-prone state, it can determine whether the exterior rearview mirror is frosted through the state of the external vehicle camera, thereby improving the accuracy of determining the frosting state of the exterior rearview mirror. If frost is formed on the surface of the external vehicle camera, it can be determined that frost is formed on the surface of the exterior rearview mirror. The first heating power that makes the frost and snow on the surface of the external vehicle camera disappear can be determined through the state change of the external vehicle camera, and then the second heating power that makes the frost and snow on the surface of the exterior rearview mirror disappear can be equivalently determined. The exterior rearview mirror can be controlled to be heated according to the second heating power, and the exterior rearview mirror can be defrosted. Through such a setting, the state of the external vehicle-mounted camera can be used to determine whether the exterior rearview mirror is frosted, and when frosted, the heating power required to make the frost and snow on the surface of the exterior rearview mirror disappear can be determined equivalently, so that accurate intelligent defrost control can be performed without the need for manual operation, thereby improving the accuracy and convenience of exterior rearview mirror defrosting and thus improving the safety of vehicle driving. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] 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.

[0046] Figure 1 A system architecture diagram of an embodiment of the present application;

[0047] Figure 2 A flowchart of a defrosting control method for a vehicle exterior rearview mirror according to an embodiment of the present application;

[0048] Figure 3 This is a schematic diagram of the structure of a vehicle body domain controller according to an embodiment of the present application;

[0049] Figure 4 This is a schematic diagram of the structure of a vehicle body domain controller according to another embodiment of the present application.

[0050] 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

[0051] 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.

[0052] The terms "first", "second", "third", "fourth", etc. (if any) in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0053] In the technical solution of this application, the collection, storage, use, processing, transmission, provision and disclosure of information such as financial data or user data involved shall comply with the provisions of relevant laws and regulations and shall not violate public order and good morals.

[0054] It should be noted that in the embodiments of the present application, certain software, components, models and other existing solutions in the industry may be mentioned, and they should be regarded as exemplary. Their purpose is only to illustrate the feasibility of implementing the technical solution of the present application, but it does not mean that the applicant has or will necessarily use the solution.

[0055] It should also be noted that the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data used for analysis, stored data, displayed data, etc.) involved in this application are all information and data authorized by the user or fully authorized by all parties, and the collection, use and processing of relevant data must comply with relevant laws, regulations and standards, and provide corresponding operation entrances for users to choose to authorize or refuse.

[0056] The defrost control method, system and medium for the vehicle exterior rearview mirror of the present application can be used in the field of vehicle control technology, and can also be used in any field other than the field of vehicle control technology, such as the field of defrost control technology, etc. The application field of the defrost control method, system and medium for the vehicle exterior rearview mirror of the present application is not limited.

[0057] The defrost control method, system and medium for the vehicle's exterior rearview mirrors of the present application can be applied to scenarios where the vehicle is driving in environments such as autumn and winter and in cold regions where the exterior rearview mirrors are prone to frost. The defrost control method, system and medium for the vehicle's exterior rearview mirrors of the present application can be applied to any scenario involving defrosting of the vehicle's exterior rearview mirrors.

[0058] Vehicle exterior mirrors are reflectors installed on the left and right sides of the vehicle, usually located in front of the door, to help the driver observe the situation behind and to the side of the vehicle, especially when changing lanes, overtaking or reversing. In order to improve driving safety, exterior mirrors usually include a heating system to heat and defrost when the exterior mirror surface is frosted or covered with frost and snow, avoiding safety problems caused by the driver's field of vision being blocked.

[0059] In the related art, the defrosting operation of the exterior rearview mirror is generally performed by manually controlling the heating system of the exterior rearview mirror. That is, when the driver feels that the surface of the exterior rearview mirror cannot provide a clear view due to frost, the driver manually inputs the exterior rearview mirror heating command, and the heating system of the exterior rearview mirror heats the exterior rearview mirror after receiving the command.

[0060] However, this method often has a heating delay and cannot perform precise defrosting control, causing inconvenience in use, and will distract the driver's attention and affect driving safety.

[0061] Based on the above technical problems, the inventive concept of the present application is: how to provide a defrost control solution for vehicle exterior rearview mirrors that can improve the accuracy and convenience of defrosting the exterior rearview mirrors, thereby improving the safety of vehicle driving.

[0062] The embodiments of the present application provide a defrost control method, system and medium for the vehicle's exterior rearview mirrors. When the current vehicle environmental information is used to preliminarily determine that the vehicle is in a frosting-prone state, the state of an external vehicle-mounted camera can be used to equivalently determine whether the exterior rearview mirror is frosted, and when frosted, the heating power required to eliminate frost and snow on the surface of the exterior rearview mirror can be equivalently determined, thereby performing accurate intelligent defrost control without the need for manual operation, thereby improving the accuracy and convenience of exterior rearview mirror defrosting and thus improving the safety of vehicle driving.

[0063] 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.

[0064] Figure 1 This is a system architecture diagram of an embodiment of the present application, such as Figure 1 As shown, the body domain controller can be connected to the T-BOX for communication, and the T-BOX can upload the vehicle positioning information to the cloud platform in real time, and download the ambient temperature and ambient humidity determined by the cloud platform based on the vehicle positioning information. After the vehicle is started, the body domain controller detects whether the vehicle is in the intelligent defrosting mode at a time interval T, and when the vehicle is in the intelligent defrosting mode, uses the T-BOX to obtain the current vehicle environment information, namely, temperature information and humidity information; according to the vehicle environment information, it is determined whether the vehicle is in a frosting-prone state; if it is not in a frosting-prone state, the heating power of the exterior rearview mirror is controlled to be 0, and the exterior rearview mirror is not heated; if it is in a frosting-prone state, it is determined whether frost is formed on the surface of the external vehicle camera. When no frost is formed, the exterior rearview mirror is controlled to maintain the current heating power; when frost is formed, the first heating power is determined to make the frost and snow on the surface of the external vehicle camera disappear; according to the first heating power, the second heating power is determined to make the frost and snow on the surface of the exterior rearview mirror disappear; according to the second heating power, the heating power of the exterior rearview mirror is adjusted to defrost the exterior rearview mirror.

[0065] Figure 2 This is a flow chart of a defrosting control method for a vehicle exterior rearview mirror according to an embodiment of the present application. This embodiment uses the body domain controller as the execution subject to illustrate the defrosting control method for the vehicle exterior rearview mirror. Figure 2 As shown, the defrosting control method of the vehicle exterior rearview mirror may include the following steps:

[0066] S201: When it is detected that the vehicle is in the intelligent defrost mode, current vehicle environment information is obtained.

[0067] In this embodiment, the vehicle environment information includes temperature information and humidity information.

[0068] In this embodiment, after the vehicle is started, the body domain controller can periodically perform defrost control. First, it can periodically detect whether the vehicle is in the intelligent defrost mode, and when it is detected that the vehicle is in the intelligent defrost mode, it obtains the current vehicle environment information. The specific detection period can be flexibly set by those skilled in the art according to actual conditions. For example, the detection period can be 10 minutes or 15 minutes, and no limitation is made here.

[0069] In this embodiment, if the vehicle is not in the smart defrost mode, the vehicle's exterior mirror heating only executes the manually set exterior mirror heating command, that is, the exterior mirror will be heated only when the driver manually inputs the exterior mirror heating command.

[0070] In this embodiment, after the vehicle is started, it can enter the intelligent defrost mode by default. The on-board display screen can provide a soft switch for the driver to manually turn on / off the intelligent defrost mode. After turning off the intelligent defrost mode, the single rearview mirror heating gear and time can be selected and triggered for execution.

[0071] In this embodiment, the current vehicle environment information may be the ambient temperature and humidity of the current location of the vehicle. The vehicle body domain controller may be connected to the T-BOX for communication, and utilize the T-BOX to obtain the temperature and humidity information of the current area of ​​the vehicle from the cloud platform in real time. Of course, if the vehicle is provided with a temperature and humidity sensor, and the temperature and humidity sensor is reliable (with high detection accuracy), the temperature and humidity information may also be obtained using the temperature and humidity sensor.

[0072] S202: Determine whether the vehicle is in a frosting-prone state based on vehicle environment information.

[0073] In this embodiment, when the external environment temperature is low and the humidity is high, the vehicle (exterior rearview mirror) is in a state prone to frost. Therefore, whether the vehicle is in a state prone to frost can be determined based on whether the vehicle environment information meets the conditions of low temperature and high humidity.

[0074] S203: If the mirror is not in a frosting-prone state, the heating power of the exterior rearview mirror is controlled to be 0, and the exterior rearview mirror is not heated.

[0075] In this embodiment, if the vehicle is not in a frosting-prone state, the exterior rearview mirrors will not frost during driving, and there is no need to heat the exterior rearview mirrors. The heating power of the exterior rearview mirrors can be controlled to 0 to avoid unnecessary energy consumption.

[0076] S204: If the camera is in a frosting-prone state, determine whether frost is formed on the surface of the external vehicle camera.

[0077] In this embodiment, if the vehicle is not in a frosting-prone state, it is necessary to further determine whether the exterior rearview mirror is frosted at this time, thereby improving the accuracy of determining the frosting state of the exterior rearview mirror, so as to perform accurate defrost control later, avoiding unnecessary energy consumption while maintaining a clear field of view of the exterior rearview mirror.

[0078] In this embodiment, the images collected by the camera can be used to detect whether frost is formed on the surface of the exterior rearview mirror. However, since the field of view of the exterior rearview mirror needs to be complete to ensure safe driving, the camera cannot be set on the surface of the exterior rearview mirror, and a camera specially set up facing the exterior rearview mirror will increase the cost of the vehicle. Therefore, this embodiment does not add a camera outside the existing vehicle, but uses the existing external vehicle-mounted camera on the vehicle, and uses the state of the external vehicle-mounted camera to determine whether the exterior rearview mirror is frosted, which ensures the accuracy of the frost judgment while not increasing the cost of the vehicle.

[0079] In this embodiment, the external vehicle camera can be an existing external camera system of the vehicle, such as a surround camera system, an anti-theft camera system, an electronic exterior rearview mirror, etc., as long as it is a camera device installed outside the vehicle. Preferably, the external vehicle camera is preferably a left or right camera or an electronic exterior rearview mirror that is closest to the environment.

[0080] In this embodiment, since the external vehicle camera and the exterior rearview mirror are both located outside the vehicle and the lens surfaces are both made of glass, the frosting conditions are similar. Therefore, if frost forms on the surface of the external vehicle camera, frost will also form on the surface of the exterior rearview mirror. Whether the exterior rearview mirror is in a frosted state can be equivalently determined based on the state change of the external vehicle camera.

[0081] S205: When no frost is formed, the exterior rearview mirrors are controlled to maintain the current heating power.

[0082] In this embodiment, when there is no frost formed on the surface of the external vehicle-mounted camera, there is also no frost formed on the surface of the exterior rearview mirror, and the exterior rearview mirror can be controlled to maintain the current heating power.

[0083] S206: When frost is formed, determine a first heating power that causes frost and snow on the surface of the external vehicle-mounted camera to disappear.

[0084] In this embodiment, when frost forms on the surface of the external vehicle camera, the heating power of the external vehicle camera can be gradually increased until the frost and snow on the surface of the external vehicle camera disappears. At this time, the heating power of the vehicle camera is the first heating power.

[0085] S207: Determine a second heating power for eliminating frost and snow on the surface of the exterior rearview mirror according to the first heating power.

[0086] In this embodiment, technical personnel in this field can pre-calibrate the respective heating powers of the external vehicle camera and the exterior rearview mirror when they achieve the same heating effect under various temperature and humidity conditions, and obtain a corresponding relationship table of the heating powers under various temperature and humidity conditions. After determining the first heating power, by searching the corresponding relationship table, the heating power equivalent to the first heating power under the vehicle environmental information can be determined, that is, the second heating power that makes the frost and snow on the surface of the exterior rearview mirror disappear.

[0087] S208: Adjust the heating power of the exterior rearview mirror according to the second heating power to defrost the exterior rearview mirror.

[0088] In this embodiment, the current heating power of the exterior rearview mirror is adjusted to the second heating power to heat the exterior rearview mirror, so that frost and snow on the surface of the exterior rearview mirror can be eliminated, thereby defrosting the exterior rearview mirror.

[0089] In this embodiment, when the vehicle is detected to be in the intelligent defrosting mode, the body domain controller can preliminarily determine whether the vehicle is in a frosting-prone state through the current vehicle environment information, and when the vehicle is in a frosting-prone state, it can determine whether the exterior rearview mirror is frosted through the state of the external vehicle camera, thereby improving the accuracy of determining the frosting state of the exterior rearview mirror. If frost is formed on the surface of the external vehicle camera, it can be determined that frost is formed on the surface of the exterior rearview mirror, and the first heating power that makes the frost and snow on the surface of the external vehicle camera disappear can be determined through the state change of the external vehicle camera, and then the second heating power that makes the frost and snow on the surface of the exterior rearview mirror disappear can be determined equivalently, and the exterior rearview mirror can be controlled to heat according to the second heating power, so that the exterior rearview mirror can be defrosted. Through such a setting, an automated intelligent defrosting control scheme is provided, which can use the state of the external vehicle camera to equivalently determine whether the exterior rearview mirror is frosted, and when frosted, it can equivalently determine the heating power that makes the frost and snow on the surface of the exterior rearview mirror disappear, and perform accurate intelligent defrosting control without manual operation, thereby improving the accuracy and convenience of defrosting the exterior rearview mirror, thereby improving the safety of vehicle driving.

[0090] In a possible implementation, the above step S202, determining whether the vehicle is in a frosting-prone state according to the vehicle environment information, may include:

[0091] S11: Determine whether the vehicle environment information is within a preset frosting-prone temperature and humidity range.

[0092] S12: If the vehicle is within the preset frosting-prone temperature and humidity range, it is determined that the vehicle is in a frosting-prone state.

[0093] S12: If the vehicle is not within the preset frosting-prone temperature and humidity range, it is determined that the vehicle is not in a frosting-prone state.

[0094] In this embodiment, the frosting temperature and humidity range can be flexibly set by those skilled in the art according to actual conditions, as long as it includes the temperature and humidity when the exterior rearview mirror is stationary or moving, etc. For example, the frosting temperature and humidity range can be broadly set to a temperature less than 10°C, a humidity greater than 50%, etc.

[0095] In this embodiment, the vehicle-mounted display screen can display the temperature and humidity range that is prone to frost formation, so that the driver can adjust the temperature and humidity range that is prone to frost formation, and the temperature and humidity range that is prone to frost formation adjusted by the driver is stored in the vehicle body domain controller.

[0096] In this embodiment, those skilled in the art may pre-set a relatively broad temperature and humidity range prone to frosting. If the acquired vehicle environment information is within the temperature and humidity range prone to frosting, it can be considered that the vehicle is in a state prone to frosting and there may be a risk of frosting on the exterior rearview mirror.

[0097] In another possible implementation, the above step S202 determines whether the vehicle is in a frosting-prone state according to the vehicle environment information, and may further include:

[0098] S21: obtaining a pre-calibrated frosting temperature and humidity condition for the exterior rearview mirror, wherein the frosting temperature and humidity condition is obtained based on the ambient temperature and humidity when frosting forms on the surface of the exterior rearview mirror, as well as a preset temperature threshold and humidity threshold.

[0099] S22: Determine whether the vehicle environment information meets the frosting temperature and humidity conditions.

[0100] S23: If the frosting temperature and humidity conditions are met, it is determined that the vehicle is in a frosting-prone state.

[0101] S24: If the frosting temperature and humidity conditions are not met, it is determined that the vehicle is not in a frosting-prone state.

[0102] In this embodiment, a person skilled in the art can perform frosting calibration on the exterior rearview mirror under different temperature and humidity conditions to obtain the critical temperature and humidity conditions when the exterior rearview mirror is frosted, and add / subtract the temperature threshold and humidity threshold on the basis of the critical temperature and humidity conditions to obtain the frosting temperature and humidity conditions.

[0103] In this embodiment, the preset temperature threshold and humidity threshold can be flexibly set by those skilled in the art according to actual conditions, and no limitation is made here.

[0104] In this embodiment, the vehicle-mounted display screen can display the frosting temperature and humidity conditions for the driver to adjust the frosting temperature and humidity conditions, and store the frosting temperature and humidity conditions adjusted by the driver in the vehicle body domain controller.

[0105] In this embodiment, a person skilled in the art may also pre-calibrate the exterior rearview mirror to obtain the frosting temperature and humidity conditions when the exterior rearview mirror surface may be frosted, and use the obtained vehicle environment information to determine whether it meets the frosting temperature and humidity conditions to accurately determine whether the vehicle is in a frosting-prone state.

[0106] In a possible implementation manner, determining whether frost is formed on the surface of the external vehicle-mounted camera in the above step S204 may include:

[0107] S31: Acquire the image captured by the external vehicle-mounted camera in real time.

[0108] S32: performing standardization processing on the lens image according to lens parameters corresponding to the external vehicle-mounted camera to obtain a standardized image, wherein the lens parameters are obtained by pre-calibrating the external vehicle-mounted camera.

[0109] S33: Perform a clarity test on the standardized image to determine whether frost is formed on the surface of the external vehicle camera.

[0110] In this embodiment, after the surface of the external vehicle camera is frosted, the details of the lens image collected by it will be lost, resulting in a decrease in clarity. Therefore, those skilled in the art can pre-calibrate the image clarity of the external vehicle camera when the surface is just beginning to be frosted to obtain a clarity threshold. When it is detected that the clarity of the standardized image is less than or equal to the clarity threshold, it can be determined that frost has formed on the surface of the external vehicle camera.

[0111] In this embodiment, since the parameters of each camera may be different, which may affect the clarity of the picture, those skilled in the art may calibrate the parameters of the external vehicle camera in advance to obtain the lens parameters corresponding to the external vehicle camera. After obtaining the lens picture collected by the external vehicle camera, the lens parameters may be used to standardize the lens picture to obtain a standardized picture, thereby improving the accuracy of frost judgment of the external vehicle camera.

[0112] In a possible implementation manner, before determining whether frost is formed on the surface of the external vehicle-mounted camera in the above step S204, the following steps may also be included:

[0113] S41: Determine whether the heating system of the exterior rearview mirror is turned on.

[0114] S42: If it is not turned on, the heating system is controlled to turn on and adjusted to the lowest heating gear.

[0115] S43: If it is turned on, the step of determining whether frost is formed on the surface of the external vehicle camera is executed.

[0116] In this embodiment, when the heating system of the exterior rearview mirror is just turned on, the exterior rearview mirror is usually not frosted yet, and the heating system can be adjusted to the lowest heating gear to reduce the energy consumption of the vehicle.

[0117] In a possible implementation manner, the above step S206 determines the first heating power for eliminating frost and snow on the surface of the external vehicle-mounted camera, which may include:

[0118] S51: Determine the current heating power of the external vehicle camera.

[0119] S52: gradually increase the heating power of the external vehicle camera according to the current heating power and the preset power difference, until it is detected that the frost and snow on the surface of the external vehicle camera disappear.

[0120] S53: Determine a first heating power according to a minimum heating power at which frost and snow on the surface of the external vehicle camera are detected to disappear.

[0121] In this implementation manner, those skilled in the art can flexibly set the preset power difference according to actual conditions, and no limitation is made here.

[0122] In this embodiment, after detecting that the frost and snow on the surface of the external vehicle camera have disappeared, the external vehicle camera can be heated for a period of time using the minimum heating power when the frost and snow disappears, and then the heating power of the external vehicle camera is adjusted to 0 to prevent unnecessary energy loss due to the failure to reduce the heating power of the external vehicle camera in time as the external environment changes (such as rising temperature).

[0123] In this embodiment, after determining that frost has formed on the surface of the external vehicle camera, the heating power of the external vehicle camera can be gradually increased to make the frost and snow on the surface of the external vehicle camera disappear. The minimum heating power when it is detected that the frost and snow on the surface of the external vehicle camera disappear can be considered as the first heating power that can defrost the external vehicle camera.

[0124] In a possible implementation manner, the above step S207 determines the second heating power for eliminating frost and snow on the surface of the exterior rearview mirror according to the first heating power, which may include:

[0125] S61: Determine a target power adjustment value corresponding to the vehicle environmental information according to a preset correspondence between environmental information and power adjustment values, wherein the correspondence between environmental information and power adjustment values ​​is obtained by calibrating an external vehicle camera and an exterior rearview mirror under different temperature and humidity conditions.

[0126] S62: Determine a second heating power that eliminates frost and snow on the surface of the exterior rearview mirror according to the first heating power and the target power adjustment value.

[0127] Among them, when the vehicle is in the vehicle environment information, the temperature rise of the external vehicle camera at the first heating power per unit time is the same as the temperature rise of the exterior rearview mirror at the second heating power.

[0128] In this embodiment, those skilled in the art can pre-calibrate the heating power corresponding to the external vehicle camera and the exterior rearview mirror when achieving the same heating effect under different temperature and humidity conditions. The difference in heating power between the two is the power adjustment value. By calibrating the power adjustment values ​​under different temperature and humidity conditions, the corresponding relationship between the environmental information and the power adjustment value can be obtained.

[0129] In this embodiment, under the vehicle environmental information, the temperature rise of the external vehicle camera at the first heating power per unit time is the same as the temperature rise of the exterior rearview mirror at the second heating power, that is, under the vehicle environmental information, the first heating power and the second heating power are equivalent, and can achieve the same heating effect. The first heating power can be used to eliminate frost and snow on the surface of the external vehicle camera, and the second heating power can also be used to eliminate frost and snow on the surface of the exterior rearview mirror.

[0130] In this embodiment, those skilled in the art can pre-calibrate the heating power of the external vehicle camera and the exterior rearview mirror when they achieve the same heating effect under various temperature and humidity conditions, and obtain the power adjustment value between the external vehicle camera and the exterior rearview mirror under various temperature and humidity conditions. After determining the first heating power, the target power adjustment value corresponding to the vehicle environmental information can be found according to the corresponding relationship between the environmental information and the power adjustment value, and the second heating power that makes the frost and snow on the surface of the exterior rearview mirror disappear can be accurately determined according to the first heating power and the target power adjustment value.

[0131] In a possible implementation, adjusting the heating power of the exterior rearview mirror according to the second heating power in step S208 may include:

[0132] S71: Heat the exterior rearview mirror according to the second heating power.

[0133] S72: After the preset heating time, the heating power of the exterior rearview mirror is adjusted to 0.

[0134] In this embodiment, the preset time can be flexibly set by technicians in this field according to actual conditions, and no limitation is made here, as long as the frost and snow on the surface of the exterior rearview mirror can be eliminated after the exterior rearview mirror is continuously heated for a preset time according to the second heating power.

[0135] In this embodiment, after the exterior rearview mirror is continuously heated for a preset period of time according to the second heating power, the frost and snow on the surface of the exterior rearview mirror disappears, and the heating power of the exterior rearview mirror can be adjusted to 0 to prevent unnecessary energy loss due to the failure to reduce the heating power of the exterior rearview mirror in time as the external environment changes (such as rising temperature).

[0136] The defrosting control method of the vehicle exterior rearview mirror of the present application is described below with reference to a specific embodiment.

[0137] In a specific embodiment, a driver drives a vehicle in a high-cold area, and the vehicle's body domain controller performs defrosting control on the exterior rearview mirror. The specific process is as follows:

[0138] In the first step, after the vehicle is started, the body domain controller detects whether the vehicle is in the intelligent defrost mode at a time interval T, and determines whether the vehicle is in the intelligent defrost mode at this time.

[0139] In the second step, the body domain controller obtains the temperature and humidity information of the vehicle’s current location in real time through T-BOX.

[0140] In the third step, the body domain controller determines that the temperature information and humidity information are within the preset frosting-prone temperature and humidity range, and then determines that the vehicle is in a frosting-prone state.

[0141] In the fourth step, the body domain controller determines that the heating system of the exterior rearview mirror is not turned on, so it controls the heating system to turn on and adjusts it to the lowest heating gear.

[0142] In the fifth step, the vehicle body domain controller obtains the lens image captured by the external vehicle camera in real time, and standardizes the lens image according to the lens parameters corresponding to the external vehicle camera to obtain a standardized image.

[0143] In the sixth step, the vehicle body domain controller performs a clarity test on the standardized image and determines that if the clarity of the standardized image is less than a preset clarity threshold, it is determined that frost has formed on the surface of the external vehicle camera.

[0144] In the seventh step, the body domain controller gradually increases the heating power of the external vehicle camera until it detects that the frost and snow on the surface of the external vehicle camera disappear, and determines the minimum heating power when it detects that the frost and snow on the surface of the external vehicle camera disappear, that is, the first heating power.

[0145] In the eighth step, the body domain controller determines the target power adjustment value corresponding to the temperature information and humidity information of the vehicle's current location based on the correspondence between the preset environmental information and the power adjustment value; and determines the second heating power that makes the frost and snow on the surface of the exterior rearview mirror disappear based on the first heating power and the target power adjustment value.

[0146] In the ninth step, the body domain controller heats the exterior rearview mirror continuously for a preset period of time according to the second heating power, and then adjusts the heating power of the exterior rearview mirror to 0, thus ending the exterior rearview mirror defrosting process of this cycle.

[0147] Figure 3 This is a schematic diagram of the structure of a vehicle body domain controller according to an embodiment of the present application. Figure 3 As shown, the body domain controller includes: an acquisition module 31, which is used to acquire the current vehicle environment information when detecting that the vehicle is in the intelligent defrost mode, and the vehicle environment information includes temperature information and humidity information; a processing module 32, which is used to determine whether the vehicle is in a frosting-prone state according to the vehicle environment information; if it is in a frosting-prone state, determine whether frost is formed on the surface of the external vehicle camera, and when frost is formed, determine a first heating power for making the frost and snow on the surface of the external vehicle camera disappear; and determine a second heating power for making the frost and snow on the surface of the exterior rearview mirror disappear according to the first heating power; and adjust the heating power of the exterior rearview mirror according to the second heating power to defrost the exterior rearview mirror.

[0148] The vehicle body domain controller provided in the embodiment of the present application can execute the technical solution shown in the above method embodiment, and its implementation principle and beneficial effects are similar, which will not be repeated here.

[0149] Figure 4 This is a schematic diagram of the structure of a vehicle body domain controller according to an embodiment of the present application. Figure 4 As shown, the vehicle body domain controller includes: a processor 401, and a memory 402 that is communicatively connected to the processor 401; the memory 402 stores computer execution instructions; the processor 401 executes the computer execution instructions stored in the memory 402 to implement the steps of the defrost control method for the vehicle exterior rearview mirror in the above-mentioned method embodiments.

[0150] In the above-mentioned vehicle body domain controller, the memory 402 and the processor 401 are electrically connected directly or indirectly to realize data transmission or interaction. For example, these elements can be electrically connected to each other through one or more communication buses or signal lines, such as through a bus connection. The memory 402 stores computer-executable instructions for implementing the data access control method, including at least one software function module that can be stored in the memory 402 in the form of software or firmware. The processor 401 executes various functional applications and data processing by running the software programs and modules stored in the memory 402.

[0151] The memory 402 may be, but is not limited to, a random access memory (RAM), a read only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electric erasable programmable read-only memory (EEPROM), etc. The memory 402 is used to store programs, and the processor 401 executes the programs after receiving the execution instruction. Furthermore, the software programs and modules in the above-mentioned memory 402 may also include an operating system, which may include various software components and / or drivers for managing system tasks (such as memory management, storage device control, power management, etc.), and may communicate with various hardware or software components to provide an operating environment for other software components.

[0152] The processor 401 may be an integrated circuit chip having the ability to process signals. The processor 401 may be a general-purpose processor, including a central processing unit (CPU), a network processor (NP), etc. The methods, steps, and logic diagrams disclosed in the embodiments of the present application may be implemented or executed. The general-purpose processor may be a microprocessor or the processor may be any conventional processor, etc.

[0153] An embodiment of the present application also provides a defrost control system for a vehicle exterior rearview mirror, such as Figure 1 As shown, the defrost control system of the vehicle's exterior rearview mirror includes: a body domain controller, an exterior rearview mirror and an external vehicle camera. The body domain controller is communicated with the exterior rearview mirror and the external vehicle camera respectively, and the exterior rearview mirror and the external vehicle camera both include a heating system.

[0154] An embodiment of the present application further 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 steps of each method embodiment of the present application.

[0155] An embodiment of the present application further provides a computer program product, including a computer program, which implements the steps of each method embodiment of the present application when executed by a processor.

[0156] 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.

[0157] It should be further noted that, although the various steps in the flowchart are displayed in sequence according to the indication of the arrows, these steps are not necessarily executed in sequence in the order indicated by the arrows. Unless there is a clear description in this article, the execution of these steps is not strictly limited in order, and these steps can be executed in other orders. Moreover, at least a portion of the steps in the flowchart may include multiple sub-steps or multiple stages, and these sub-steps or stages are not necessarily executed at the same time, but can be executed at different times, and the execution order of these sub-steps or stages is not necessarily to be carried out in sequence, but can be executed in turn or alternately with other steps or at least a portion of the sub-steps or stages of other steps.

[0158] It should be understood that the above-mentioned device embodiments are only illustrative, and the device of the present application can also be implemented in other ways. For example, the division of units / modules in the above-mentioned embodiments is only a logical function division, and there may be other division methods in actual implementation. For example, multiple units, modules or components can be combined, or can be integrated into another system, or some features can be ignored or not executed.

[0159] 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.

[0160] In the above embodiments, the description of each embodiment has its own emphasis. For the part not described in detail in a certain embodiment, please refer to the relevant description of other embodiments. The technical features of the above embodiments can be combined arbitrarily. In order to make the description concise, all possible combinations of the technical features in the above embodiments are not described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0161] Those skilled in the art will readily appreciate other embodiments of the present application after considering the specification and practicing the invention disclosed herein. The present application is intended to cover any modification, use or adaptation of the present application, which follows the general principles of the present application and includes common knowledge or customary techniques in the art that are not disclosed in the present application. The specification and examples are intended to be exemplary only, and the true scope and spirit of the present application are indicated by the appended claims.

[0162] It should be understood that the present application is not limited to the precise structures that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present application is limited only by the appended claims.

Claims

1. A defrosting control method for a vehicle exterior rearview mirror, characterized in that: include: When it is detected that the vehicle is in the intelligent defrost mode, current vehicle environment information is obtained, where the vehicle environment information includes temperature information and humidity information; determining, based on the vehicle environment information, whether the vehicle is in a frosting-prone state; If the camera is in a frosting prone state, determining whether frost is formed on the surface of the external vehicle camera, and if frost is formed, determining a first heating power to make the frost and snow on the surface of the external vehicle camera disappear; and determining a second heating power to make the frost and snow on the surface of the exterior rearview mirror disappear according to the first heating power; The heating power of the exterior rearview mirror is adjusted according to the second heating power to defrost the exterior rearview mirror.

2. The defrosting control method for a vehicle exterior rearview mirror according to claim 1, characterized in that: The step of determining whether frost is formed on the surface of the external vehicle-mounted camera includes: Acquire the lens images captured by the external vehicle-mounted camera in real time; According to the lens parameters corresponding to the external vehicle-mounted camera, the lens picture is standardized to obtain a standardized picture, wherein the lens parameters are obtained by pre-calibrating the external vehicle-mounted camera; The standardized image is tested for clarity to determine whether frost is formed on the surface of the external vehicle-mounted camera.

3. The defrosting control method for a vehicle exterior rearview mirror according to claim 2, characterized in that: Before determining whether frost is formed on the surface of the external vehicle camera, including: Determining whether a heating system of the exterior rearview mirror is turned on; If it is not turned on, controlling the heating system to turn on and adjust to the lowest heating gear; If it is turned on, the step of determining whether frost is formed on the surface of the external vehicle camera is performed.

4. The defrosting control method for a vehicle exterior rearview mirror according to any one of claims 1 to 3, characterized in that: The determining of the first heating power for eliminating frost and snow on the surface of the external vehicle-mounted camera comprises: Determining a current heating power of the external vehicle-mounted camera; According to the current heating power and the preset power difference, gradually increasing the heating power of the external vehicle camera until it is detected that the frost and snow on the surface of the external vehicle camera disappear; The first heating power is determined according to the minimum heating power at which frost and snow on the surface of the external vehicle-mounted camera are detected to disappear.

5. The defrosting control method for a vehicle exterior rearview mirror according to claim 4, characterized in that: The step of determining a second heating power for eliminating frost and snow on the surface of the exterior rearview mirror according to the first heating power comprises: Determining a target power adjustment value corresponding to the vehicle environment information according to a preset correspondence relationship between the environment information and the power adjustment value, wherein the correspondence relationship between the environment information and the power adjustment value is obtained by calibrating the external vehicle camera and the exterior rearview mirror respectively under different temperature and humidity conditions; Determining a second heating power for eliminating frost and snow on the surface of the exterior rearview mirror according to the first heating power and the target power adjustment value; Among them, when the vehicle is in the vehicle environment information, the temperature rise of the external vehicle camera under the first heating power per unit time is the same as the temperature rise of the exterior rearview mirror under the second heating power.

6. The defrosting control method for a vehicle exterior rearview mirror according to claim 5, characterized in that: The step of adjusting the heating power of the exterior rearview mirror according to the second heating power includes: heating the exterior rearview mirror according to the second heating power; After the preset heating time, the heating power of the exterior rearview mirror is adjusted to 0.

7. The defrosting control method for a vehicle exterior rearview mirror according to any one of claims 1 to 3, characterized in that: The determining, based on the vehicle environment information, whether the vehicle is in a frosting-prone state includes: Determining whether the vehicle environment information is within a preset frosting-prone temperature and humidity range; if within the preset frosting-prone temperature and humidity range, determining that the vehicle is in a frosting-prone state; if not within the preset frosting-prone temperature and humidity range, determining that the vehicle is not in a frosting-prone state; or, Acquire the frosting temperature and humidity conditions obtained by pre-calibration of the exterior rearview mirror, wherein the frosting temperature and humidity conditions are obtained based on the ambient temperature and humidity when frost forms on the surface of the exterior rearview mirror, as well as preset temperature thresholds and humidity thresholds; determine whether the vehicle environmental information meets the frosting temperature and humidity conditions; if so, determine that the vehicle is in a frosting-prone state; if not, determine that the vehicle is not in a frosting-prone state.

8. A vehicle body domain controller, characterized in that: include: A processor, and a memory communicatively connected to the processor; The memory is used to store computer-executable instructions; The processor is used to execute the computer-executable instructions stored in the memory, so that the processor executes the defrost control method for the vehicle exterior rearview mirror according to any one of claims 1 to 7.

9. A defrosting control system for a vehicle exterior rearview mirror, characterized in that: include: An exterior rearview mirror, an external vehicle camera, and a vehicle body domain controller as claimed in claim 8; The vehicle body domain controller is respectively connected to the exterior rearview mirror and the external vehicle camera for communication, and both the exterior rearview mirror and the external vehicle camera include a heating system.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores computer-executable instructions, which, when executed by a processor, are used to implement the defrost control method for a vehicle exterior rearview mirror according to any one of claims 1 to 7.

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