Defogging method, device and equipment for rearview mirror of vehicle and storage medium

Abstract

The invention relates to the field of vehicle accessories, in particular to a vehicle rearview mirror demisting method, device and equipment and a storage medium. The front face of the rearview mirror shell is provided with a window, a demisting area is formed between the window and the lens, an air outlet is formed between the lens and the shell, a power unit is arranged in the rearview mirror shell, airflow generated by the power unit is output to the demisting area through the air outlet, the back face of the shell is provided with an air inlet, and the air inlet is communicated with the demisting area. The air inlet is provided with a switch unit, the switch unit is used for controlling opening and closing of the air inlet, the air inlet is communicated to the demisting area through the air outlet, and the method comprises the steps that the speed of the vehicle is detected, and the rearview mirror demisting mode of the vehicle is determined based on the speed of the vehicle; and respectively controlling the power unit and the switch unit to enter the corresponding rearview mirror demisting mode.

Description

Technical Field

[0001] The present disclosure relates to the field of vehicle accessories, and more specifically, to a vehicle rearview mirror defogger method, device, equipment and storage medium. Background Art

[0002] In the wet and rainy season, defogger of the rearview mirror becomes particularly important. When the rainfall is heavy, a layer of water mist is easily condensed on the surface of the rearview mirror, which seriously affects the driver's vision clarity and increases the potential safety hazard during driving. Especially when turning, changing lanes or reversing, the blurred vision may lead to misjudgment and cause traffic accidents. Therefore, ensuring that the rearview mirror is clear and fog-free is an indispensable part of ensuring driving safety.

[0003] However, although the existing rearview mirror defogger method can solve the problem to a certain extent, it also has obvious defects. For example, many vehicles are equipped with a rearview mirror heating function, which increases the mirror surface temperature through electric heating wires to evaporate the water mist. However, this method has limited effect in extremely cold or humid environments, and the heating process may take some time to completely remove the water mist. Therefore, finding a more efficient defogger method is still an urgent problem to be solved in the field of automotive safety. Summary of the invention

[0004] An object of the present disclosure is to provide a vehicle rearview mirror defogger method, which can solve the problem of low defogger efficiency of rearview mirror heating.

[0005] According to a first aspect of the present disclosure, a vehicle rearview mirror defogger method is provided, wherein a rearview mirror housing has a window on the front side, a defogger area is formed between the window and the lens, an air outlet is provided between the lens and the housing, a power unit is provided inside the rearview mirror housing, an airflow generated by the power unit is output to the defogger area through the air outlet, an air inlet is provided on the back side of the housing, a switch unit is provided on the air inlet, the switch unit is used to control the opening and closing of the air inlet, and the air inlet is connected to the defogger area through the air outlet, the method comprises:

[0006] Detecting the speed of a vehicle and determining a rearview mirror defog mode for the vehicle based on the speed of the vehicle

[0007] The power unit and the switch unit are controlled respectively to enter the corresponding rearview mirror defog mode.

[0008] Optionally, the power unit is connected to a steering mechanism inside the housing, the power unit is driven by the steering mechanism to turn, an air flow channel is formed between the switch unit and the air outlet, and the air flow channel includes an upper channel and a lower channel located at upper and lower sides of the lens;

[0009] The step of determining a rearview mirror defog mode of the vehicle based on the speed of the vehicle includes:

[0010] When the speed is less than or equal to a first speed threshold, determining that the rearview mirror defog mode is a first defog mode;

[0011] The respectively controlling the power unit and the switch unit to enter the corresponding rearview mirror defog mode includes:

[0012] The switch unit is controlled to be closed, and the output end of the power unit is driven by the steering mechanism to face the upper channel or the lower channel and generate airflow, so as to enter the first defogger mode.

[0013] Optionally, the method further comprises:

[0014] Detecting the first rainfall amount in the scene where the vehicle is located;

[0015] The step of determining a rearview mirror defog mode of the vehicle based on the speed of the vehicle further includes:

[0016] A rearview mirror defog mode of the vehicle is determined according to the first rainfall amount and the speed of the vehicle.

[0017] Optionally, determining a rearview mirror defog mode of the vehicle according to the first rainfall and the speed of the vehicle includes:

[0018] When the speed is greater than the first speed threshold, determining a second rainfall corresponding to the speed of the vehicle, wherein the second rainfall represents: when the power unit is not started, the airflow output from the rearview mirror outlet corresponding to the speed of the vehicle realizes the maximum rainfall that the rearview mirror defogger function can cope with;

[0019] When the first rainfall is greater than the second rainfall, determining that the rearview mirror defog mode is the second defog mode;

[0020] When the first rainfall is less than or equal to the second rainfall, determining that the rearview mirror defog mode is a third defog mode;

[0021] The method of respectively controlling the power unit and the switch unit to enter the corresponding rearview mirror defog mode further includes:

[0022] Controlling the switch unit to open, the input end of the power unit is driven by the steering mechanism toward the switch unit and generates airflow, so as to enter the second demisting mode;

[0023] The switch unit is controlled to be turned on and the power unit does not generate airflow, so as to enter the third defog mode.

[0024] Optionally, a heating unit is provided in the air outlet channel for heating the airflow in the air outlet channel, and the determining the defog mode of the rearview mirror of the vehicle according to the first rainfall and the speed of the vehicle further includes:

[0025] When the power unit is started, a third rainfall amount is determined, wherein the third rainfall amount represents: the speed of the vehicle and the airflow output from the rearview mirror air outlet generated by the power unit, so as to achieve a maximum rainfall amount that a rearview mirror defogger function can cope with;

[0026] When the first rainfall is greater than the third rainfall, determining that the rearview mirror defog mode is a fourth defog mode;

[0027] When the first rainfall is less than or equal to the third rainfall and greater than the second rainfall, the rearview mirror defog mode is determined to be the second defog mode

[0028] The method of respectively controlling the power unit and the switch unit to enter the corresponding rearview mirror defog mode further includes:

[0029] The switch unit and the heating unit are controlled to be turned on, and the input end of the power unit is driven by the steering mechanism to face the switch unit and generate airflow, so as to enter the fourth demisting mode.

[0030] Optionally, a heating unit is provided in the air outlet channel for heating the airflow in the air outlet channel, and the determining of the rearview mirror defog mode of the vehicle according to the first rainfall and the speed of the vehicle includes:

[0031] When the speed is less than or equal to the first speed threshold, a fourth rainfall is determined, wherein the fourth rainfall represents: when the switch unit is closed, the output end of the power unit is driven by the steering mechanism toward the upper channel or the lower channel and generates airflow, the airflow generated by the power unit realizes the maximum rainfall that the rearview mirror defogger function can cope with;

[0032] When the first rainfall is less than or equal to the fourth rainfall, determining that the rearview mirror defog mode is the first defog mode;

[0033] When the first rainfall is greater than the fourth rainfall, determining the rearview mirror defog mode to be the fifth defog mode;

[0034] The method of respectively controlling the power unit and the switch unit to enter the corresponding rearview mirror defog mode further includes:

[0035] The switch unit is controlled to be closed, the heating unit is controlled to be turned on, and the output end of the power unit is driven by the steering mechanism to face the upper channel or the lower channel and generate airflow to enter the fifth defogger mode.

[0036] Optionally, a temperature detection module is provided in the rearview mirror for detecting the temperature of the heating unit;

[0037] The method further comprises:

[0038] When the temperature of the heating unit is greater than a first temperature threshold, controlling the heating unit to stop heating the airflow in the air outlet channel;

[0039] When the temperature of the heating unit is lower than a second temperature threshold, the heating unit is controlled to heat the airflow in the air outlet channel.

[0040] According to a second aspect of the present disclosure, a vehicle rearview mirror defogger is provided, wherein a rearview mirror housing has a window on the front side, a defogger area is formed between the window and the lens, an air outlet is provided between the lens and the housing, a power unit is provided inside the rearview mirror housing, an airflow generated by the power unit is output to the defogger area through the air outlet, an air inlet is provided on the back side of the housing, a switch unit is provided on the air inlet, the switch unit is used to control the opening and closing of the air inlet, the air inlet is connected to the defogger area through the air outlet, and the device comprises:

[0041] A detection module, used for detecting a speed of a vehicle and determining a rearview mirror defog mode of the vehicle based on the speed of the vehicle;

[0042] The control module is used to control the power unit and the switch unit respectively to enter the corresponding rearview mirror defog mode.

[0043] According to a third aspect of the present disclosure, a vehicle electronic device is provided, comprising a processor and a memory, wherein the memory stores computer instructions, and when the computer instructions are executed by the processor, the steps of any one of the methods described in the first aspect are implemented.

[0044] According to a fourth aspect of the present disclosure, there is provided a storage medium on which computer instructions are stored. When the computer instructions are executed by a processor, the steps of any one of the methods described in the first aspect are implemented.

[0045] One technical effect of the present disclosure is that a vehicle rearview mirror defogger method is provided, which can determine the defogger mode of the vehicle rearview mirror based on the speed of the vehicle, thereby controlling the switch unit and the power unit to work to achieve different defogger modes. In this way, when the switch unit is turned on and the vehicle is moving forward, the airflow entering from the air inlet and the airflow generated by the power unit accelerate the evaporation of water mist on the mirror surface to achieve the defogger effect. At the same time, the airflow can cover the mirror surface to effectively prevent rain from continuing to fall on the mirror surface. At the same time, different working modes can be set for different vehicle speeds to improve the defogger efficiency.

[0046] Other features and advantages of the embodiments of the present disclosure will become apparent from the following detailed description of exemplary embodiments of the present disclosure with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] The accompanying drawings, which constitute a part of the specification, illustrate embodiments of the present disclosure and, together with the description, serve to explain the principles of the embodiments of the present disclosure.

[0048] Figure 1 is a schematic structural diagram of a rearview mirror defog system according to an embodiment;

[0049] Figure 2 is a schematic structural diagram of a rearview mirror defog system according to an embodiment;

[0050] Figure 3 is a flow chart of a vehicle rearview mirror defogger method according to one embodiment;

[0051] Figure 4 The figure is a schematic structural diagram of a vehicle rearview mirror defogger according to an embodiment. DETAILED DESCRIPTION

[0052] Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. It should be noted that the relative arrangement of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention unless otherwise specifically stated.

[0053] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.

[0054] Techniques and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the techniques and equipment should be considered part of the specification.

[0055] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not limiting. Therefore, other examples of the exemplary embodiments may have different values.

[0056] It should be noted that like reference numerals and letters refer to similar items in the following figures, and therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0057] In the embodiment of the present application, the specific structure of the vehicle rearview mirror can be as follows: Figure 1 As shown, in Figure 1 In the embodiment, a power unit 3 is arranged inside the housing 1, a viewing window is provided on the front of the housing, and an air outlet 11 and an air outlet 12 are arranged between the lens 2 of the rearview mirror and the housing 1. The rearview mirror also includes an air inlet on the back of the housing.

[0058] In this embodiment, the power unit 3 can be an air source or an air pump. The airflow with a set flow rate provided by the power unit 3 can be transported to the air outlet through the air flow channel inside the shell 1, and further output from the air outlet 11 to the defog area. The power unit 3 can also input the airflow outside the shell 1 from the air inlet into the shell 1, thereby improving the defog efficiency on the mirror side of the lens 2.

[0059] The front of the shell 1 is on the same side as the front of the rearview mirror, and the back of the shell 1 is on the same side as the back of the rearview mirror. The front of the shell 1 has a window, and the lens 2 is arranged in the shell 1, and the mirror side of the lens 2 faces the channel of the window, so that the user can observe the field of view image captured on the lens 2 through the window.

[0060] The air outlet 11 and the air outlet 12 between the lens 2 and the housing 1 can be connected to the power unit 3. When the power unit 3 is in operation, it can drive the airflow inside the housing 1 to be output from the housing 1 through the air outlet, and the power unit 3 can input the airflow outside the housing 1 into the housing 1 through the air inlet. The airflow direction is shown in FIG. Figure 1 As indicated by the arrow.

[0061] A demisting area is formed between the lens 2 and the window, and the openings of the air outlet 11 and the air outlet 12 are facing the demisting area. The airflow output from the air outlet shell 1 can enter the demisting area. The demisting area is close to the mirror side of the lens 2, so the mirror side of the lens 2 can be demisted by the airflow flowing in the demisting area, thereby improving the demisting efficiency of the lens 2.

[0062] In this embodiment, a switch unit 7 is also provided at the air inlet for controlling the opening and closing of the air inlet. The switch unit may be a grille or other device. When the switch unit is turned on, Figure 1 As shown in FIG. 1 , the air inlet and the air outlet are connected to form a passage, and the airflow on the back of the rearview mirror housing can be discharged from the air outlet through the passage. When the switch unit is closed, as shown in FIG. Figure 2 As shown in the dotted box in FIG, the air inlet is completely closed.

[0063] The present application embodiment provides a vehicle rearview mirror defog method, which can be applied to vehicles. Figure 3 As shown, the method includes steps S11-S12.

[0064] Step S11, detecting the speed of the vehicle, and determining the defog mode of the rearview mirror of the vehicle based on the speed of the vehicle.

[0065] In an embodiment of the present application, a speed sensor or an inertial sensor may also be provided in the vehicle to measure the speed of the vehicle. After determining the speed of the vehicle, the defog mode of the vehicle rearview mirror may be determined based on the speed. In this embodiment, a plurality of defog modes of the rearview mirror may be pre-stored, and these defog modes correspond to different working states of the switch unit and the power unit. For example, when the vehicle speed is relatively fast, it may be determined that the defog mode of the vehicle corresponds to the defog mode with the switch unit turned on. When the vehicle is moving forward, natural wind will enter the air inlet, and the airflow will be output through the air outlet and blown to the defog area. At the same time, the faster the vehicle speed is, the greater the relative airflow speed will be. When the vehicle speed is relatively low, it may be determined that the defog mode of the vehicle corresponds to the defog mode with the power unit turned on, and the defog of the mirror is achieved by the airflow generated by the power unit.

[0066] Step S12, respectively controlling the power unit and the switch unit to enter the corresponding rearview mirror defog mode.

[0067] After the defog mode is determined, the power unit and the switch unit can be controlled to work according to the working state corresponding to the defog mode to enter the mode and realize the defog function of the rearview mirror.

[0068] In this example, a vehicle rearview mirror defogger method is provided, which can determine the defogger mode of the vehicle rearview mirror based on the speed of the vehicle, thereby controlling the switch unit and the power unit to work to achieve different defogger modes. In this way, when the switch unit is turned on and the vehicle is moving forward, the airflow entering from the air inlet and the airflow generated by the power unit accelerate the evaporation of the water mist on the mirror surface to achieve the defogger effect. At the same time, the airflow can be covered on the mirror surface to effectively prevent rain from continuing to fall on the mirror surface. At the same time, different working modes can be set for different vehicle speeds to improve the defogger efficiency.

[0069] In one example of the present embodiment, the power unit is connected to the steering mechanism inside the shell, the power unit is turned under the drive of the steering mechanism, an air flow channel is formed between the switch unit and the air outlet, and the air flow channel includes an upper channel and a lower channel located on the upper and lower sides of the lens; based on the speed of the vehicle, the rearview mirror defog mode of the vehicle is determined, including: when the speed is less than or equal to the first speed threshold, the rearview mirror defog mode is determined to be the first defog mode; the power unit and the switch unit are controlled separately to enter the corresponding rearview mirror defog mode, including: controlling the switch unit to be closed, the output end of the power unit is driven by the steering mechanism toward the upper channel or the lower channel and generates airflow to enter the first defog mode.

[0070] In this embodiment, a steering mechanism is also provided inside the housing, which is connected to the power unit and can drive the power unit to turn. The direction of the power unit can be referred to as Figure 1 and Figure 2 ,in, Figure 1 The input end of the power unit faces the switch unit. Figure 2 The input end of the middle power unit faces the upper airway, and the output end faces the lower airway.

[0071] In one example, the first speed threshold of the vehicle can be the airflow output from the air inlet to the air outlet caused by natural wind when the car is moving, which is the minimum vehicle speed threshold that can achieve the defogger function. When the vehicle speed is less than or equal to the first speed threshold, the air volume of the air inlet opened by the switch unit cannot meet the defogger function. Therefore, at this time, the vehicle can be allowed to enter the preset first defogger mode, so that the switch unit is closed, and the output end of the power unit is driven by the steering mechanism to face the upper channel or the lower channel, and generate airflow.

[0072] For example, the status of the switch unit and the power unit can be as follows Figure 2 As shown, in this example, the output end of the power unit faces the upper channel. At this time, since the switch unit is closed, the inside of the shell is relatively closed. When the power unit generates airflow, the negative pressure at its input end will cause the air outlet 12 to start to inlet air. At the same time, the air outlet 11 still discharges air, forming a circulating airflow path inside the rearview mirror. The specific airflow direction is as follows: Figure 2 As shown, based on this, the airflow output from the air outlet 11 to the demisting area will re-enter the shell from the air outlet 12, that is, the airflow direction in the demisting area is downward, which can accelerate the water mist on the mirror surface to flow downward and achieve a quick demisting effect.

[0073] In this embodiment, the lower side of the housing may further be provided with a guide groove ( Figure 2 (not shown) to accelerate the discharge of water mist.

[0074] In another example, the output end of the power unit can also be oriented toward the lower channel, so that the airflow direction of the defogging area inside the housing and on the mirror surface is the same as that of the lower channel. Figure 2 In this case, the defog function on the mirror surface is mainly achieved by accelerating the evaporation of water mist through airflow and forming an air mold to prevent rainwater from falling onto the mirror surface. At the same time, this method can also accelerate the drainage of rainwater at the air outlet 12 to avoid backflow.

[0075] In an example of this embodiment, the method also includes: detecting a first rainfall amount in a scene where the vehicle is located; determining a rearview mirror defog mode of the vehicle based on the speed of the vehicle, and also includes: determining a rearview mirror defog mode of the vehicle based on the first rainfall amount and the speed of the vehicle.

[0076] In this embodiment, a rain sensor may be provided on the vehicle, and the rain sensor may be used to detect the amount of rain in the environment and scene where the vehicle is located. The automobile rain sensor determines the amount of rain by measuring the size and number of raindrops on the windshield. When the windshield is dry, the sensor will be initialized and record the light intensity received at this time. This is usually done when the vehicle is started or the sensor detects that there are no raindrops on the windshield for a long time. When there are raindrops on the windshield, part of the light will be scattered by the raindrops, resulting in a decrease in the light reflected back. The sensor determines whether there are raindrops falling on the windshield by comparing the difference in light intensity when it is dry and when there are raindrops. The microprocessor inside the sensor analyzes the changes in the intensity of the received light signal and determines the amount of rain according to the degree of signal attenuation. The greater the amount of rain, the less light is reflected back, and the lower the intensity of the light signal received by the sensor.

[0077] In this example, the corresponding defog mode can be determined according to the amount of rainfall and the speed of the vehicle, that is, whether it is necessary to control the power unit and the switch unit to generate additional airflow. For example, in the case of heavy rainfall, the airflow brought by the moving car may not meet the defog demand. Therefore, the power unit can be turned on to generate airflow to enhance the defog effect. In the case of light rainfall and high vehicle speed, when the airflow brought by the moving car can meet the defog demand, the power unit can be turned off and only the switch unit can be turned on to save power consumption.

[0078] In one example of the present embodiment, a heating unit is arranged in the air outlet channel, and is used to heat the airflow in the air outlet channel, and the rearview mirror defog mode of the vehicle is determined according to the first rainfall and the speed of the vehicle, including: when the speed is less than or equal to the first speed threshold, a fourth rainfall is determined, and the fourth rainfall is characterized by: when the switch unit is closed, the output end of the power unit is driven by the steering mechanism toward the upper channel or the lower channel, and an airflow is generated, and the airflow generated by the power unit realizes the maximum rainfall that the rearview mirror defog function can cope with; when the first rainfall is less than or equal to the fourth rainfall, the rearview mirror defog mode is determined to be the first defog mode; when the first rainfall is greater than the fourth rainfall, the rearview mirror defog mode is determined to be the fifth defog mode; the power unit and the switch unit are controlled respectively to enter the corresponding rearview mirror defog mode, and it also includes: controlling the switch unit to be closed, the heating unit to be opened, and the output end of the power unit to be driven by the steering mechanism toward the upper channel or the lower channel and generate airflow to enter the fifth defog mode.

[0079] In this embodiment, an air flow channel is formed between the power unit 3 and the air outlet, including an upper channel above the lens 2 and a lower channel below the lens 2. The heating unit 4 is arranged in the air flow channel, and can be specifically arranged in one of the upper channel, the lower channel, or all of them.

[0080] In this embodiment, the heating unit 4 may include a heating wire or a heating film. When the air flow is transported between the power unit 3 and the air outlet, the heating unit 4 can heat the air flow so that the air flow output from the air outlet to the defogging area is a hot air flow. The hot air flow can accelerate the evaporation of water vapor on the lens 2 and improve the defogging efficiency of the lens 2.

[0081] In this embodiment, it can be further determined that after the power unit is started, the airflow generated by the power unit can achieve the maximum rainfall of the defog function, that is, the rearview mirror defog function can be completed in what rainfall scenario after the power unit is started. In this example, the corresponding relationship between the vehicle speed and the fourth rainfall can be pre-tested and stored, so that confirmation can be made directly based on the preset relationship during the actual application process. Afterwards, it is determined whether the current rainfall is greater than the maximum rainfall that can be defogged corresponding to the current vehicle speed. In the case of greater current rainfall, the vehicle can enter the preset fifth defog mode, so that the switch unit is closed, the power unit and the heating unit are all turned on, and at the same time, the output end of the power unit is driven by the steering mechanism toward the upper channel or the lower channel to accelerate the airflow generated by the switch unit, and control the heating unit to heat the airflow, so as to improve the defog effect of the vehicle rearview mirror. In the case where the rainfall is less than or equal to the fourth rainfall and greater than the second rainfall, the first defog mode can be entered, and the heating unit is not controlled to heat the airflow to avoid wasting energy.

[0082] In an example of the present embodiment, the rearview mirror defog mode of the vehicle is determined according to a first rainfall amount and a speed of the vehicle, including: when the speed is greater than a first speed threshold, determining a second rainfall amount corresponding to the speed of the vehicle, the second rainfall amount representing: when the power unit is not started, the airflow output from the rearview mirror air outlet corresponding to the speed of the vehicle, to achieve the maximum rainfall that the rearview mirror defog function can cope with; when the first rainfall amount is greater than the second rainfall amount, determining the rearview mirror defog mode as the second defog mode; when the first rainfall amount is less than or equal to the second rainfall amount, determining the rearview mirror defog mode as the third defog mode; respectively controlling the power unit and the switch unit to enter the corresponding rearview mirror defog mode, further including: controlling the switch unit to open, the input end of the power unit is driven by the steering mechanism toward the switch unit and generates airflow, so as to enter the second defog mode; controlling the switch unit to open, the power unit does not generate airflow, so as to enter the third defog mode.

[0083] When the speed of the vehicle is greater than the first speed threshold, that is, when the airflow output from the rearview mirror air outlet generated by the vehicle moving forward can realize the defog function, the maximum rainfall that the airflow output from the rearview mirror air outlet brought by the vehicle moving forward can effectively cope with when the power unit is not started and only the switch unit is turned on can be determined according to the real-time speed of the vehicle, that is, the rearview mirror defog function can be completed under a certain rain scene at a specific speed. In this example, the corresponding relationship between the vehicle speed and the second rainfall can be pre-tested and stored, so that the second rainfall can be directly confirmed based on the vehicle speed and the preset relationship during the actual application process. Afterwards, it is determined whether the current rainfall is greater than the maximum rainfall that can be defogged corresponding to the current vehicle speed. When the current rainfall is greater, the vehicle can be allowed to enter the preset second defog mode, so that the switch unit and the power unit are all turned on, and the input end of the power unit is directed toward the switch unit to accelerate the airflow generated by the switch unit and improve the defog effect of the vehicle rearview mirror. When it is less than or equal to, the vehicle can be allowed to enter the preset third defog mode, so that the switch unit is turned on and the power unit is turned off. The power unit can be not controlled to generate airflow, and only the airflow generated by natural wind can be used for defog to avoid wasting energy. In addition, in the third defogger mode, it is also possible to pre-test the direction in which the power unit has the least resistance to the airflow caused by the vehicle speed, thereby controlling it to face the position with the least resistance in the third defogger mode and reducing the resistance as much as possible.

[0084] In one example of the present embodiment, a heating unit is arranged in the air outlet channel to heat the air flow in the air outlet channel, and the rearview mirror defog mode of the vehicle is determined according to the first rainfall and the speed of the vehicle. It also includes: when the power unit is started, a third rainfall is determined, and the third rainfall represents: the speed of the vehicle and the air flow output from the rearview mirror air outlet generated by the power unit, so as to realize the maximum rainfall that the rearview mirror defog function can cope with; when the first rainfall is greater than the third rainfall, the rearview mirror defog mode is determined to be the fourth defog mode; when the first rainfall is less than or equal to the third rainfall and greater than the second rainfall, the rearview mirror defog mode is determined to be the second defog mode, and the power unit and the switch unit are controlled respectively to enter the corresponding rearview mirror defog mode, and it also includes: controlling the switch unit and the heating unit to be turned on, and the input end of the power unit is driven by the steering mechanism toward the switch unit and generates airflow to enter the fourth defog mode.

[0085] In this embodiment, after the power unit is started, it can be further determined that at the current vehicle speed, after the power unit is started, the maximum rainfall that can be achieved by the airflow generated by the power unit and the airflow brought by the vehicle speed to achieve the defog function, that is, at a specific vehicle speed, after the power unit is started, the rearview mirror defog function can be completed under what rainfall scenario. In this example, the corresponding relationship between the vehicle speed and the third rainfall can be pre-tested and stored, so that the third rainfall can be directly confirmed based on the vehicle speed and the preset relationship during the actual application process. Afterwards, it is determined whether the current rainfall is greater than the maximum rainfall that can be defogged corresponding to the current vehicle speed. In the case of greater current rainfall, the vehicle can enter the preset fourth defog mode, so that the switch unit, the power unit and the heating unit are all turned on, and the input end of the power unit is directed toward the switch unit to accelerate the airflow generated by the switch unit, and control the heating unit to heat the airflow, so as to improve the defog effect of the vehicle rearview mirror. In the case where the rainfall is less than or equal to the third rainfall and greater than the second rainfall, the second defog mode can be entered, and the heating unit is not controlled to heat the airflow to avoid wasting energy.

[0086] The rearview mirror is provided with a temperature detection module for detecting the temperature of the heating unit; the method also includes: when the temperature of the heating unit is greater than a first temperature threshold, controlling the heating unit to stop heating the airflow in the air outlet channel; when the temperature of the heating unit is less than a second temperature threshold, controlling the heating unit to heat the airflow in the air outlet channel.

[0087] In this embodiment, the temperature detection module may include a temperature sensor or a thermistor, and the temperature sensor is arranged near the heating unit and can monitor the heating temperature of the heating unit. In this embodiment, the first temperature threshold may be the upper temperature limit for normal operation of the heating unit, and the second temperature threshold may be a lower temperature value for safe operation, which can be set based on actual conditions. When the temperature of the heating unit is greater than the first temperature threshold, it means that there may be a safety risk if the heating unit continues to heat, so the heating unit can be controlled to temporarily stop working. It is cooled by airflow. When the temperature of the heating unit is less than the second temperature threshold, the heating unit continues to be controlled.

[0088] In one example, when the temperature of the heating unit is greater than a first temperature threshold, the power unit can be synchronously controlled to stop working to reduce safety risks. In another example, the temperature detection module can also synchronously monitor the temperature of the power unit, and control the power unit to stop working when the temperature of the power unit is greater than a threshold.

[0089] In this example, a temperature detection module may also be provided in the rearview mirror to detect the temperature of the heating unit and determine whether it is necessary to control the operation of the heating unit based on the temperature of the heating unit to avoid safety risks caused by overheating of the heating unit.

[0090] like Figure 4 As shown, the embodiment of the present application also provides a vehicle rearview mirror defogger 100, the front side of the rearview mirror shell has a window, a defogger area is formed between the window and the lens, an air outlet is arranged between the lens and the shell, a power unit is arranged inside the rearview mirror shell, the airflow generated by the power unit is output to the defogger area through the air outlet, the back side of the shell has an air inlet, the air inlet is provided with a switch unit, the switch unit is used to control the opening and closing of the air inlet, the air inlet is connected to the defogger area through the air outlet, the device includes: a detection module 101, used to detect the speed of the vehicle, and based on the speed of the vehicle, determine the rearview mirror defogger mode of the vehicle; a control module 102, used to control the power unit and the switch unit respectively to enter the corresponding rearview mirror defogger mode.

[0091] Optionally, the power unit is connected to a steering mechanism inside the housing, the power unit is driven to turn under the steering mechanism, and an air flow channel is formed between the switch unit and the air outlet, and the air flow channel includes an upper channel and a lower channel located on the upper and lower sides of the lens;

[0092] The determination module is also used to: when the speed is less than or equal to the first speed threshold, determine that the rearview mirror defog mode is the first defog mode; the control module is also used to control the switch unit to be closed, and the output end of the power unit to be driven by the steering mechanism toward the upper channel or the lower channel and generate airflow to enter the first defog mode.

[0093] Optionally, the device further comprises: a rainfall monitoring module, detecting a first rainfall in a scene where the vehicle is located;

[0094] The control module is also used to determine a rearview mirror defog mode of the vehicle according to the first rainfall amount and the speed of the vehicle.

[0095] Optionally, determining a rearview mirror defog mode of the vehicle according to the first rainfall amount and the speed of the vehicle includes:

[0096] When the speed is greater than the first speed threshold, a second rainfall corresponding to the speed of the vehicle is determined, where the second rainfall represents: when the power unit is not started, the airflow output from the rearview mirror outlet corresponding to the speed of the vehicle, and the maximum rainfall that can be handled by the rearview mirror defogger function;

[0097] When the first rainfall amount is greater than the second rainfall amount, determining the rearview mirror defog mode to be the second defog mode;

[0098] When the first rainfall amount is less than or equal to the second rainfall amount, determining the rearview mirror defog mode to be the third defog mode;

[0099] The power unit and the switch unit are controlled respectively to enter the corresponding rearview mirror defogger mode, and also include:

[0100] The switch unit is controlled to be turned on, and the input end of the power unit is driven by the steering mechanism toward the switch unit and generates airflow to enter the second demisting mode;

[0101] The control switch unit is turned on and the power unit does not generate airflow to enter the third defog mode.

[0102] Optionally, the heating unit is disposed in the air outlet channel to heat the airflow in the air outlet channel, and the control module is further used to:

[0103] When the power unit is started, a third rainfall amount is determined, where the third rainfall amount represents: the speed of the vehicle and the airflow output from the rearview mirror air outlet generated by the power unit, so as to achieve the maximum rainfall amount that the rearview mirror defogger function can cope with;

[0104] When the first rainfall amount is greater than the third rainfall amount, determining the rearview mirror defog mode to be the fourth defog mode;

[0105] When the first rainfall is less than or equal to the third rainfall and greater than the second rainfall, the rearview mirror defog mode is determined to be the second defog mode

[0106] The power unit and the switch unit are controlled respectively to enter the corresponding rearview mirror defogger mode, and also include:

[0107] The switch unit and the heating unit are controlled to be turned on, and the input end of the power unit is driven by the steering mechanism to face the switch unit and generate airflow to enter the fourth defogger mode.

[0108] Optionally, a heating unit is disposed in the air outlet channel, and is used to heat the airflow in the air outlet channel, and a rearview mirror defog mode of the vehicle is determined according to the first rainfall and the speed of the vehicle, including:

[0109] When the speed is less than or equal to the first speed threshold, a fourth rainfall amount is determined, and the fourth rainfall amount represents: when the switch unit is closed, the output end of the power unit is driven by the steering mechanism toward the upper channel or the lower channel, and an airflow is generated, and the airflow generated by the power unit realizes the maximum rainfall that the rearview mirror defogger function can cope with;

[0110] When the first rainfall amount is less than or equal to the fourth rainfall amount, determining the rearview mirror defog mode to be the first defog mode;

[0111] When the first rainfall amount is greater than the fourth rainfall amount, determining the rearview mirror defog mode to be the fifth defog mode;

[0112] The power unit and the switch unit are controlled respectively to enter the corresponding rearview mirror defogger mode, and also include:

[0113] The control switch unit is closed, the heating unit is turned on, and the output end of the power unit is driven by the steering mechanism to face the upper channel or the lower channel and generate airflow to enter the fifth defogger mode.

[0114] Optionally, a temperature detection module is provided in the rearview mirror for detecting the temperature of the heating unit;

[0115] The control unit is also used to:

[0116] When the temperature of the heating unit is greater than a first temperature threshold, controlling the heating unit to stop heating the airflow in the air outlet channel;

[0117] When the temperature of the heating unit is lower than the second temperature threshold, the heating unit is controlled to heat the airflow in the air outlet channel.

[0118] An embodiment of the present application also provides a vehicle electronic device, including a processor and a memory, wherein the memory stores computer instructions, and when the computer instructions are executed by the processor, any one of the above-mentioned vehicle rearview mirror defogger method embodiments is implemented, and the same technical effect can be achieved. To avoid repetition, it will not be repeated here.

[0119] An embodiment of the present application also provides a storage medium on which computer instructions are stored. When the computer instructions are executed by a processor, any one of the above-mentioned vehicle rearview mirror defogger method embodiments is implemented and the same technical effect can be achieved. To avoid repetition, they will not be repeated here.

[0120] Each embodiment in the present disclosure is described in a progressive manner, and the same or similar parts between the embodiments can be referred to each other, and each embodiment focuses on the differences from other embodiments. In particular, for the device and equipment embodiments, since they are basically similar to the method embodiments, the description is relatively simple, and the relevant parts can be referred to the partial description of the method embodiments.

[0121] The above describes specific embodiments of the present disclosure. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recorded in the claims can be performed in an order different from that in the embodiments and still achieve the desired results. In addition, the processes depicted in the drawings do not necessarily require the specific order or continuous order shown to achieve the desired results. In some embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0122] The embodiments of the present disclosure may be systems, methods and / or computer program products. The computer program product may include a computer-readable storage medium carrying computer-readable program instructions for causing a processor to implement various aspects of the embodiments of the present disclosure.

[0123] A computer-readable storage medium may be a tangible device that can hold and store instructions used by an instruction execution device. A computer-readable storage medium may be, for example, but not limited to, an electrical storage device, a magnetic storage device, an optical storage device, an electromagnetic storage device, a semiconductor storage device, or any suitable combination of the foregoing. More specific examples of computer-readable storage media (a non-exhaustive list) include: a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), a static random access memory (SRAM), a portable compact disk read-only memory (CD-ROM), a digital versatile disk (DVD), a memory stick, a floppy disk, a mechanical encoding device, such as a punch card or a raised structure in a groove on which instructions are stored, and any suitable combination of the foregoing. As used herein, a computer-readable storage medium is not to be interpreted as a transient signal per se, such as a radio wave or other freely propagating electromagnetic wave, an electromagnetic wave propagating through a waveguide or other transmission medium (e.g., a light pulse through a fiber optic cable), or an electrical signal transmitted through a wire.

[0124] The computer-readable program instructions described herein can be downloaded from a computer-readable storage medium to each computing / processing device, or downloaded to an external computer or external storage device via a network, such as the Internet, a local area network, a wide area network, and / or a wireless network. The network can include copper transmission cables, optical fiber transmissions, wireless transmissions, routers, firewalls, switches, gateway computers, and / or edge servers. The network adapter card or network interface in each computing / processing device receives the computer-readable program instructions from the network and forwards the computer-readable program instructions for storage in the computer-readable storage medium in each computing / processing device.

[0125] The computer program instructions for performing the operation of the embodiments of the present disclosure may be assembly instructions, instruction set architecture (ISA) instructions, machine instructions, machine-related instructions, microcode, firmware instructions, state setting data, or source code or object code written in any combination of one or more programming languages, including object-oriented programming languages ​​such as Smalltalk, C++, etc., and conventional procedural programming languages ​​such as "C" language or similar programming languages. Computer-readable program instructions may be executed completely on a user's computer, partially on a user's computer, as an independent software package, partially on a user's computer, partially on a remote computer, or completely on a remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer via any type of network including a local area network (LAN) or a wide area network (WAN), or may be connected to an external computer (e.g., using an Internet service provider to connect via the Internet). In some embodiments, an electronic circuit, such as a programmable logic circuit, a field programmable gate array (FPGA), or a programmable logic array (PLA), may be personalized by utilizing the state information of a computer-readable program instruction, and the electronic circuit may execute a computer-readable program instruction, thereby realizing various aspects of the embodiments of the present disclosure.

[0126] Various aspects of the embodiments of the present disclosure are described herein with reference to the flowcharts and / or block diagrams of the methods, devices (systems) and computer program products according to the embodiments of the present disclosure. It should be understood that each box in the flowchart and / or block diagram and the combination of each box in the flowchart and / or block diagram can be implemented by computer-readable program instructions.

[0127] These computer-readable program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing device, thereby producing a machine, so that when these instructions are executed by the processor of the computer or other programmable data processing device, a device that implements the functions / actions specified in one or more boxes in the flowchart and / or block diagram is generated. These computer-readable program instructions can also be stored in a computer-readable storage medium, and these instructions cause the computer, programmable data processing device, and / or other equipment to work in a specific manner, so that the computer-readable medium storing the instructions includes a manufactured product, which includes instructions for implementing various aspects of the functions / actions specified in one or more boxes in the flowchart and / or block diagram.

[0128] Computer-readable program instructions may also be loaded onto a computer, other programmable data processing apparatus, or other device so that a series of operating steps are performed on the computer, other programmable data processing apparatus, or other device to produce a computer-implemented process, thereby causing the instructions executed on the computer, other programmable data processing apparatus, or other device to implement the functions / actions specified in one or more boxes in the flowchart and / or block diagram.

[0129] The flowcharts and block diagrams in the accompanying drawings show the possible architecture, functions and operations of the systems, methods and computer program products according to multiple embodiments of the present disclosure. In this regard, each box in the flowchart or block diagram can represent a module, a program segment or a part of an instruction, and a part of a module, a program segment or an instruction contains one or more executable instructions for realizing the specified logical function. In some alternative implementations, the functions marked in the box can also occur in a different order from the order marked in the accompanying drawings. For example, two consecutive boxes can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each box in the block diagram and / or the flowchart, and the combination of the boxes in the block diagram and / or the flowchart can be implemented by a dedicated hardware-based system that performs the specified function or action, or can be implemented by a combination of dedicated hardware and computer instructions. It is well known to those skilled in the art that it is equivalent to implement it by hardware, implement it by software, and implement it by combining software and hardware.

[0130] The embodiments of the present disclosure have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes will be apparent to those of ordinary skill in the art without departing from the scope of the described embodiments. The selection of terms used herein is intended to best explain the principles of the embodiments, practical applications, or improvements to the technology in the market, or to enable other persons of ordinary skill in the art to understand the embodiments disclosed herein.

Claims

1. A method for defogging a vehicle rearview mirror, characterized in that: The front side of the rearview mirror housing has a window, a defogging area is formed between the window and the lens, an air outlet is provided between the lens and the housing, a power unit is provided inside the rearview mirror housing, an airflow generated by the power unit is output to the defogging area through the air outlet, an air inlet is provided on the back side of the housing, a switch unit is provided on the air inlet, the switch unit is used to control the opening and closing of the air inlet, the air inlet is connected to the defogging area through the air outlet, and the method comprises: Detecting a speed of a vehicle, and determining a rearview mirror defog mode of the vehicle based on the speed of the vehicle; The power unit and the switch unit are controlled respectively to enter the corresponding rearview mirror defog mode.

2. The method according to claim 1, characterized in that The power unit is connected to the steering mechanism inside the housing, the power unit is turned under the drive of the steering mechanism, an air flow channel is formed between the switch unit and the air outlet, and the air flow channel includes an upper channel and a lower channel located on the upper and lower sides of the lens; The step of determining a rearview mirror defog mode of the vehicle based on the speed of the vehicle includes: When the speed is less than or equal to a first speed threshold, determining that the rearview mirror defog mode is a first defog mode; The respectively controlling the power unit and the switch unit to enter the corresponding rearview mirror defog mode includes: The switch unit is controlled to be closed, and the output end of the power unit is driven by the steering mechanism to face the upper channel or the lower channel and generate airflow, so as to enter the first defogger mode.

3. The method according to claim 2, characterized in that The method further comprises: Detecting the first rainfall amount in the scene where the vehicle is located; The step of determining a rearview mirror defog mode of the vehicle based on the speed of the vehicle further includes: A rearview mirror defog mode of the vehicle is determined according to the first rainfall amount and the speed of the vehicle.

4. The method according to claim 3, characterized in that The step of determining a rearview mirror defog mode of the vehicle according to the first rainfall amount and the speed of the vehicle includes: When the speed is greater than the first speed threshold, determining a second rainfall corresponding to the speed of the vehicle, wherein the second rainfall represents: when the power unit is not started, the airflow output from the rearview mirror outlet corresponding to the speed of the vehicle realizes the maximum rainfall that the rearview mirror defogger function can cope with; When the first rainfall is greater than the second rainfall, determining that the rearview mirror defog mode is the second defog mode; When the first rainfall is less than or equal to the second rainfall, determining that the rearview mirror defog mode is a third defog mode; The method of respectively controlling the power unit and the switch unit to enter the corresponding rearview mirror defog mode further includes: Controlling the switch unit to open, the input end of the power unit is driven by the steering mechanism toward the switch unit and generates airflow, so as to enter the second demisting mode; The switch unit is controlled to be turned on and the power unit does not generate airflow, so as to enter the third defog mode.

5. The method according to claim 4, characterized in that A heating unit is disposed in the air outlet channel for heating the airflow in the air outlet channel, and the determining of the defog mode of the rearview mirror of the vehicle according to the first rainfall and the speed of the vehicle further includes: When the power unit is started, a third rainfall is determined, wherein the third rainfall represents: when the power unit is started, the speed of the vehicle and the airflow output from the rearview mirror air outlet generated by the power unit to achieve the maximum rainfall that the rearview mirror defogger function can cope with; When the first rainfall is greater than the third rainfall, determining that the rearview mirror defog mode is a fourth defog mode; When the first rainfall is less than or equal to the third rainfall and greater than the second rainfall, the rearview mirror defog mode is determined to be the second defog mode The method of respectively controlling the power unit and the switch unit to enter the corresponding rearview mirror defog mode further includes: The switch unit and the heating unit are controlled to be turned on, and the input end of the power unit is driven by the steering mechanism to face the switch unit and generate airflow, so as to enter the fourth demisting mode.

6. The method according to claim 3, characterized in that A heating unit is disposed in the air outlet channel, and is used to heat the airflow in the air outlet channel. The method of determining the defog mode of the rearview mirror of the vehicle according to the first rainfall and the speed of the vehicle includes: When the speed is less than or equal to the first speed threshold, a fourth rainfall is determined, wherein the fourth rainfall represents: when the switch unit is closed, the output end of the power unit is driven by the steering mechanism toward the upper channel or the lower channel and generates airflow, the airflow generated by the power unit realizes the maximum rainfall that the rearview mirror defogger function can cope with; When the first rainfall is less than or equal to the fourth rainfall, determining that the rearview mirror defog mode is the first defog mode; When the first rainfall is greater than the fourth rainfall, determining the rearview mirror defog mode to be the fifth defog mode; The method of respectively controlling the power unit and the switch unit to enter the corresponding rearview mirror defog mode further includes: The switch unit is controlled to be closed, the heating unit is controlled to be turned on, and the output end of the power unit is driven by the steering mechanism to face the upper channel or the lower channel and generate airflow to enter the fifth defogger mode.

7. The method according to claim 5 or 6, characterized in that: The rearview mirror is provided with a temperature detection module for detecting the temperature of the heating unit; The method further comprises: When the temperature of the heating unit is greater than a first temperature threshold, controlling the heating unit to stop heating the airflow in the air outlet channel; When the temperature of the heating unit is lower than a second temperature threshold, the heating unit is controlled to heat the airflow in the air outlet channel.

8. A vehicle rearview mirror defogger, characterized in that: The front side of the rearview mirror housing has a window, a defogging area is formed between the window and the lens, an air outlet is provided between the lens and the housing, a power unit is provided inside the rearview mirror housing, an airflow generated by the power unit is output to the defogging area through the air outlet, an air inlet is provided on the back side of the housing, a switch unit is provided on the air inlet, the switch unit is used to control the opening and closing of the air inlet, the air inlet is connected to the defogging area through the air outlet, and the method comprises: A detection module, used for detecting a speed of a vehicle and determining a rearview mirror defog mode of the vehicle based on the speed of the vehicle; The control module is used to control the power unit and the switch unit respectively to enter the corresponding rearview mirror defog mode.

9. A vehicle electronic device, characterized in that: The method comprises a processor and a memory, wherein the memory stores computer instructions, and when the computer instructions are executed by the processor, the steps of the method according to any one of claims 1 to 7 are implemented.

10. A storage medium, characterized in that: Computer instructions are stored thereon, and when the computer instructions are executed by a processor, the steps of the method according to any one of claims 1 to 7 are implemented.

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