Polariscope control method and device, vehicle body controller and storage medium

Abstract

The invention provides a polariscope control method and device, an automobile body controller and a storage medium, and belongs to the technical field of automobiles. The method comprises the following steps: starting a polariscope lifting function of the vehicle under the condition that the vehicle meets a function starting condition; under the condition that the lifting function of the polariscope is started, illumination information of the vehicle and front vehicle information are obtained, the illumination information is used for indicating the external illumination intensity of the vehicle, and the front vehicle information is used for indicating the vehicle distribution condition of the road section in front of the vehicle; under the condition that the illumination information indicates that the external illumination intensity of the vehicle is larger than the first threshold value and the front vehicle information indicates that an opposite vehicle exists in the front road section of the vehicle, a polariscope of the vehicle is controlled to turn downwards. According to the technical scheme, the driving potential safety hazard caused by the fact that a driver needs to leave a steering wheel with one hand when manually putting down the polariscope is solved, and the driving safety is improved.

Description

Technical Field

[0001] The present application relates to the field of automobile technology, and in particular to a control method and device for a polarizer, a vehicle body controller, and a storage medium. Background Art

[0002] When driving at night, if an oncoming vehicle in front of the driver's vehicle suddenly turns on its high beam, the strong light emitted by the high beam will suddenly shine directly onto the driver, causing the driver to be blinded for a short period of time. In this case, the vehicle driven by the driver is very likely to have a traffic accident.

[0003] In the related art, in order to ensure the driving safety of the driver when the high beam is suddenly illuminated, a polarizer is usually installed on the roof of the vehicle. The polarizer is made of polarized material, and its material properties can eliminate and filter out most of the scattered light in the light beam, so that the light can be normally projected into the human eye to form an image, making the things seen by the driver clearer and more natural, and reducing the impact of the high beam on the driving field of vision when driving.

[0004] However, the above solution requires the driver to manually lower the polarized filter from the ceiling when the high beam is on. This process requires the driver to take one hand off the steering wheel, which means that the driver's attention needs to be distracted to operate. This poses a great driving safety hazard and further reduces the driver's driving experience. Summary of the invention

[0005] The embodiments of the present application provide a control method and device for polarized lenses, a vehicle body controller, and a storage medium, which solve the potential driving safety hazard caused by the driver needing to take one hand off the steering wheel when manually lowering the polarized lenses, thereby improving driving safety. The technical solution is as follows:

[0006] In one aspect, a method for controlling a polarizer is provided, which is applied to a vehicle, and the method comprises:

[0007] When the vehicle meets the function activation condition, activating the polarizer lifting function of the vehicle;

[0008] When the polarizer lifting function is turned on, obtaining illumination information of the vehicle and information of the vehicle ahead, wherein the illumination information is used to indicate the external illumination intensity of the vehicle, and the vehicle ahead information is used to indicate the distribution of vehicles on the road ahead of the vehicle;

[0009] When the illumination information indicates that the external illumination intensity of the vehicle is greater than a first threshold and the front vehicle information indicates that there is an oncoming vehicle on the road ahead of the vehicle, the polarizer of the vehicle is controlled to flip downward.

[0010] On the other hand, a control device for polarizers is provided, which is configured in a vehicle, and the device comprises:

[0011] An activation module, used for activating the polarizer lifting function of the vehicle when the vehicle meets the function activation condition;

[0012] an acquisition module, used to acquire illumination information of the vehicle and information of the vehicle ahead when the polarizer lifting function is turned on, wherein the illumination information is used to indicate the external illumination intensity of the vehicle, and the vehicle ahead information is used to indicate the distribution of vehicles on the road ahead of the vehicle;

[0013] The control module is used to control the polarizer of the vehicle to flip downward when the illumination information indicates that the external illumination intensity of the vehicle is greater than a first threshold and the front vehicle information indicates that there is an oncoming vehicle on the road ahead of the vehicle.

[0014] In some embodiments, the function activation condition includes at least one of the following:

[0015] The light intensity in the environment where the vehicle is located is less than a second threshold;

[0016] The display mode of the vehicle is night mode;

[0017] The vehicle's lights come on.

[0018] In some embodiments, the acquisition module is used to acquire lighting information of the vehicle through a light sensor installed on the inside of the front windshield of the vehicle when the polarizer lifting function is turned on; to acquire an image of the road ahead of the vehicle through the vehicle's front-view camera; and to acquire the distance between the vehicle and other vehicles on the road ahead through the vehicle's millimeter-wave radar.

[0019] In some embodiments, the control module is used to perform image recognition on the image of the road section ahead to obtain a vehicle recognition result of the image of the road section ahead when the lighting information indicates that the external light intensity of the vehicle is greater than a first threshold; when the vehicle recognition result indicates that there is an oncoming vehicle on the road ahead of the vehicle, if the distance between the vehicle and the oncoming vehicle continues to decrease, control the polarizer of the vehicle to flip downward.

[0020] In some embodiments, the apparatus further comprises:

[0021] The adjustment module is used to obtain the eye position of the driver of the vehicle through the driver monitoring system of the vehicle; based on the eye position of the driver, adjust the descent height of the polarizer so that the lateral center line of the polarizer is aligned with the line of sight of the driver.

[0022] In some embodiments, the vehicle is equipped with a sun visor, the upper end of the sun visor is connected to the roof of the vehicle, and the lower end of the sun visor is connected to the polarizer;

[0023] The adjustment module is used to determine the flip angle of the sun visor based on the eye position of the driving object; according to the flip angle, the sun visor is controlled to flip downward to drive the lowering height of the polarizer to change.

[0024] In some embodiments, the adjustment module is also used to obtain the eye position of the driver of the vehicle through the driver monitoring system of the vehicle; based on the eye position of the driver, adjust the flip angle of the polarizer so that the plane where the polarizer is located is perpendicular to the line of sight of the driver.

[0025] In some embodiments, the control module is further used to control the polarizer of the vehicle to flip upward to retract the polarizer if the lighting information indicates that the external lighting intensity of the vehicle is not greater than the first threshold within a preset time period.

[0026] In some embodiments, the control module is further used to control the speaker of the vehicle to issue a sound reminder; and control the lights of the vehicle to issue a light reminder.

[0027] In another aspect, a vehicle body controller is provided, wherein the vehicle body controller includes a main control module, the main control module includes a processor and a memory, the memory is used to store at least one computer program, and the at least one computer program is loaded and executed by the processor to implement the control method of the polarizer in the embodiment of the present application.

[0028] On the other hand, a computer-readable storage medium is provided, which is used to store at least one computer program, and the at least one computer program is loaded and executed by a processor to implement the control method of the polarizer in the embodiment of the present application.

[0029] On the other hand, a computer program product is provided, including a computer program, wherein the computer program is executed by a processor to implement the control method of the polarizer in the embodiment of the present application.

[0030] The embodiment of the present application provides a method for controlling polarized mirrors. During driving, the polarized mirror lifting function can be automatically turned on when the vehicle meets the function activation conditions. After being turned on, the function can accurately and timely detect whether there is an oncoming vehicle with high beams on in the road ahead of the vehicle based on the vehicle's lighting information and the information of the vehicle in front. Then, the polarized mirror can be automatically lowered when the oncoming vehicle with high beams on is detected, without the driver having to manually lower the polarized mirror, thereby solving the driving safety hazard caused by the driver needing to take one hand off the steering wheel when manually lowering the polarized mirror, and improving driving safety. In addition, due to the visual persistence phenomenon of the human eye, the function can sense the high beam status of the oncoming vehicle earlier, so that the polarized mirror can be lowered more quickly, greatly reducing the probability of the driver being instantly blinded by the strong light of the high beam, and further improving driving safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0032] Figure 1 is a schematic diagram of an implementation environment of a method for controlling a polarizer provided in an embodiment of the present application;

[0033] Figure 2 is a flow chart of a method for controlling a polarizer according to an embodiment of the present application;

[0034] Figure 3 is a flow chart of another method for controlling a polarizer according to an embodiment of the present application;

[0035] Figure 4 is a schematic diagram of a polarizer lifting function interface provided according to an embodiment of the present application;

[0036] Figure 5 is a schematic structural diagram of a polarizer provided according to an embodiment of the present application;

[0037] Figure 6 is a schematic diagram of a control process of a polarizer provided according to an embodiment of the present application;

[0038] Figure 7 is a block diagram of a control device for a polarizer provided according to an embodiment of the present application;

[0039] Figure 8 is a block diagram of another polarizer control device provided according to an embodiment of the present application;

[0040] Fig. 9 It is a structural schematic diagram of a vehicle body controller provided according to an embodiment of the present application. DETAILED DESCRIPTION

[0041] In order to make the objectives, technical solutions and advantages of the present application clearer, the implementation methods of the present application will be further described in detail below with reference to the accompanying drawings.

[0042] In this application, the terms "first", "second", etc. are used to distinguish identical or similar items with substantially the same effects and functions. It should be understood that there is no logical or temporal dependency between "first", "second", and "nth", nor are there any limitations on quantity and execution order.

[0043] In the present application, the term "at least one" means one or more, and the term "plurality" means two or more.

[0044] It should be noted that the information (including but not limited to user device information, user personal information, etc.), data (including but not limited to data used for analysis, stored data, displayed data, etc.) and signals involved in this application are all 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 of relevant countries and regions.

[0045] Figure 1 Schematic diagram of the implementation environment of a polarizer control method provided in accordance with an embodiment of the present application. Figure 1 The implementation environment includes: a light sensor 101, a front-view camera 102, a millimeter-wave radar 103, a body controller 104, and a polarizer 105. The light sensor 101, the front-view camera 102, the millimeter-wave radar 103, the body controller 104, and the polarizer 105 are all located in the vehicle 100.

[0046] In some embodiments, according to the purpose of the vehicle 100, the vehicle 100 may be a car, a bus, a truck, a taxi, etc. According to the power source of the vehicle 100, the vehicle 100 may be a fuel vehicle and a new energy vehicle, including a gasoline vehicle, a pure electric vehicle, a plug-in hybrid vehicle, a fuel cell electric vehicle, etc.

[0047] In some embodiments, the light sensor 101 is located on the inner side of the front windshield of the vehicle 100, and is used to detect the external light intensity of the vehicle 100. The front-view camera 102 is used to capture the image of the road section in front of the vehicle 100, and the millimeter wave radar 103 can be a millimeter wave sensor for detecting distance information. The millimeter wave radar 103 can emit millimeter waves, and when the millimeter waves encounter obstacles (such as the vehicle in front), they will be reflected back. The millimeter wave radar 103 receives the reflected waves and calculates the distance between the vehicle 101 and the obstacle based on the time difference between emission and reception and the propagation speed of the millimeter waves in the air.

[0048] Optionally, the forward-looking camera 102 and the millimeter-wave radar 103 can be installed on the front bumper of the vehicle 100, on the upper inner side of the front windshield, near the front wheels, etc. The embodiment of the present application does not limit the number and installation positions of the forward-looking cameras 102 and the millimeter-wave radar 103.

[0049] In an embodiment of the present application, the body controller 104 is capable of obtaining lighting information collected by the lighting sensor 101 of the vehicle 100, and the front vehicle information collected by the front camera 102 and the millimeter-wave radar 103, and controlling the polarizer 105 to flip downward when the lighting information indicates that the external light intensity is greater than a first threshold and the front vehicle information indicates that there is an oncoming vehicle on the road ahead.

[0050] Figure 2 is a flow chart of a method for controlling a polarizer according to an embodiment of the present application, the method being executed by a vehicle body controller, such as Figure 2 As shown, the control method of the polarizer includes the following steps:

[0051] 201. When the vehicle meets the function activation conditions, the body controller activates the vehicle's polarized mirror lifting function.

[0052] In the embodiment of the present application, the polarizer lifting function refers to the function that the polarizer installed on the vehicle can automatically lift (or flip or similarly change position). Since the driver may need to use the polarizer during driving, in order to allow the driver to concentrate on driving, the body controller can automatically activate the vehicle's polarizer lifting function when it detects that the vehicle meets the function activation conditions, thereby eliminating the need for the driver to manually activate the polarizer lifting process. By activating this function, the polarizer can be lifted, flipped, etc., so that when the driver suddenly encounters high beams, most of the scattered light in the light beam can be eliminated and filtered out, so that the light can be normally projected into the human eye for imaging, reducing the impact of high beams on the driving field of vision while driving, and improving the driver's field of vision clarity and driving safety.

[0053] 202. When the polarizer lifting function is turned on, the body controller obtains the vehicle's lighting information and the vehicle ahead information. The lighting information is used to indicate the external lighting intensity of the vehicle, and the vehicle ahead information is used to indicate the vehicle distribution on the road ahead of the vehicle.

[0054] In the embodiment of the present application, the illumination information is information collected by the illumination sensor and other equipment on the vehicle and transmitted to the body controller, which is used to indicate the illumination intensity of the external environment in which the vehicle is located. The vehicle information ahead refers to information acquired by the millimeter wave radar and camera on the vehicle and provided to the body controller, which is used to indicate the distribution of vehicles on the road ahead of the vehicle, including whether there are vehicles, the number of vehicles, the relative positions of vehicles (such as ahead, opposite, etc.), and the distance between vehicles.

[0055] After the polarizer lifting function is turned on, the body controller will establish a communication connection with the corresponding sensor. For lighting information, the lighting sensor will sense the light intensity outside the vehicle in real time, and convert the collected light signal into an electrical signal, which is then processed and transmitted to the body controller in the form of a digital signal. For information about the vehicle in front, the millimeter-wave radar transmits millimeter-wave signals and receives reflected signals, and calculates the distance, speed, angle and other information of the vehicle in front by analyzing the time delay and frequency change of the signal; the camera captures the image of the road ahead, uses image recognition algorithms to detect and identify vehicles, and determines the distribution of vehicles in front, etc. This information will also be transmitted to the body controller.

[0056] 203. When the illumination information indicates that the external illumination intensity of the vehicle is greater than a first threshold and the front vehicle information indicates that there is an oncoming vehicle on the road ahead of the vehicle, the body controller controls the polarizer of the vehicle to flip downward.

[0057] In the embodiment of the present application, the first threshold is a pre-set light intensity numerical standard, which serves as one of the bases for the body controller to determine whether it is necessary to control the action of the polarizer. The first threshold can be 10,000 candela. After receiving the lighting information and the vehicle information ahead, the body controller will analyze and judge the information. It will compare the light intensity value in the lighting information with the pre-set first threshold, and at the same time check whether the vehicle information ahead indicates that there is an oncoming vehicle in the road ahead of the vehicle. When the two conditions that the light intensity is greater than the first threshold and there is an oncoming vehicle in the road ahead are met at the same time, it indicates that there is an oncoming vehicle with high beam lights on in the road ahead of the vehicle. Therefore, the body controller can send a command to the driving device (such as a servo motor) of the polarizer to flip the polarizer downward to adjust the angle of the polarizer to better filter the glare from the lights of the oncoming vehicle ahead and the strong light from the outside, thereby improving the driver's field of vision and driving safety.

[0058] The embodiment of the present application provides a method for controlling polarized mirrors. During driving, the polarized mirror lifting function can be automatically turned on when the vehicle meets the function activation conditions. After being turned on, the function can accurately and timely detect whether there is an oncoming vehicle with high beams on in the road ahead of the vehicle based on the vehicle's lighting information and the information of the vehicle in front. Then, the polarized mirror can be automatically lowered when the oncoming vehicle with high beams on is detected, without the driver having to manually lower the polarized mirror, thereby solving the driving safety hazard caused by the driver needing to take one hand off the steering wheel when manually lowering the polarized mirror, and improving driving safety. In addition, due to the visual persistence phenomenon of the human eye, the function can sense the high beam status of the oncoming vehicle earlier, so that the polarized mirror can be lowered more quickly, greatly reducing the probability of the driver being instantly blinded by the strong light of the high beam, and further improving driving safety.

[0059] Figure 3 is a flow chart of another method for controlling a polarizer according to an embodiment of the present application, the method being executed by a vehicle, such as Figure 3 As shown, the control method of the polarizer includes the following steps:

[0060] 301. When the vehicle meets the conditions for activating the function, the polarizer lifting function of the vehicle is activated.

[0061] In the embodiment of the present application, step 301 is the same as the above-mentioned step 201 and will not be described again here.

[0062] In some embodiments, the function activation condition includes at least one of the following:

[0063] (1) The light intensity in the environment where the vehicle is located is less than the second threshold. The second threshold is a specific numerical standard of light intensity that is pre-set. It is a limit value used to determine whether the light intensity in the environment where the vehicle is located meets the conditions for opening the polarizer lifting function. The second threshold can be 7000 candela. The vehicle is equipped with a light sensor that can monitor the light intensity of the vehicle's surrounding environment in real time. The vehicle control system will continuously read the electrical signal transmitted by the light sensor and convert it into a corresponding light intensity value. Then, this value is compared with the pre-set second threshold. If the detected light intensity value is less than the second threshold, the body controller will determine that the vehicle is in a low-light driving environment similar to nighttime. In this environment, the use of high beams by oncoming vehicles may cause strong glare to the driver, which may affect driving safety. Therefore, the body controller will believe that the vehicle's polarizer may be needed at present, and will turn on the polarizer lifting function so that the polarizer can be used in time to reduce the glare effect when needed, providing better visual protection for the driver.

[0064] (2) The vehicle's display mode is night mode. Among them, night mode is one of the vehicle's display modes. In night mode, the vehicle's display device will adjust the display parameters, such as reducing the screen brightness, changing the color contrast, etc., to reduce the stimulation of light to the driver's eyes, adapt to the darker environment at night, and avoid visual interference. It is also an indicator that the vehicle may be driving at night. The vehicle's display mode switching can be triggered by two methods: automatic and manual. In automatic mode, the body controller will determine whether to switch to night mode based on information such as light sensor data and time; in manual mode, the driver switches by operating the relevant buttons or menus in the car according to actual feelings. When the display mode is switched to night mode, the display system will adjust the display parameters, such as reducing the screen backlight intensity and changing the color scheme, so that the displayed content is clearer and less dazzling in the night environment. After the body controller detects that the display mode has changed to night mode, it will think that the vehicle is most likely driving at night. There is also a risk of glare from oncoming vehicles turning on their high beams. Therefore, the body controller will think that the vehicle's polarized mirror may be needed at present, and will turn on the polarized mirror lifting function so that the polarized mirror can be used in time to reduce the impact of glare when needed, providing better visual protection for the driver.

[0065] (3) The vehicle's headlights are turned on. Headlights are devices used for lighting and signaling on vehicles. At night or in low-light environments, turning on the headlights is an important guarantee for vehicle driving safety, and their status can serve as an important indicator of the vehicle's driving environment and the driver's operating intentions. The driver can manually turn on the headlights by operating the headlight control switch in the vehicle, or the vehicle's automatic lighting control system automatically triggers the headlights to turn on when the ambient light intensity detected by the light sensor is lower than a certain level. When the body controller detects that the headlights are on, it can be considered that the vehicle may be in a low-light environment, that is, similar to a nighttime driving state, and there is a potential risk of interference with the high beams of oncoming vehicles. Therefore, the body controller will believe that the vehicle's polarized mirror may be needed at the moment, and will turn on the polarized mirror lifting function so that the polarized mirror can be used in time to reduce glare when needed, providing better visual protection for the driver.

[0066] Optionally, Figure 4 is a schematic diagram of a polarizer lifting function interface provided according to an embodiment of the present application. Figure 4 As shown, in order to meet the needs of users, three soft switches (or hard switches) are designed on the vehicle's large screen, namely, open, close and AUTO (automatic). Three different switches can meet the needs of users to realize the manual switch and automatic switch of the polarizer lifting function.

[0067] 302. When the polarizer lifting function is turned on, the body controller obtains the vehicle's lighting information through the light sensor installed on the inside of the vehicle's front windshield.

[0068] In an embodiment of the present application, the light sensor is a device that can sense light intensity and is installed on the inside of the front windshield of the vehicle. After the polarizer lifting function is turned on, the body controller will establish a communication connection with the light sensor. The light sensor will sense the light intensity outside the vehicle in real time, and convert the collected light signals into electrical signals, which are then processed and transmitted to the body controller in the form of digital signals. The body controller parses and processes these digital signals, converts them into corresponding light intensity values, and thus obtains the lighting information of the vehicle. By continuously monitoring the lighting information, the body controller can understand the light changes in the vehicle's environment and provide a basis for subsequent decision-making.

[0069] 303. The body controller obtains an image of the road ahead of the vehicle through the vehicle's front-view camera.

[0070] In the embodiment of the present application, the front-view camera is installed in front of the vehicle and is used to capture images of the road ahead of the vehicle. After the polarizer lifting function is turned on, the body controller will establish a communication connection with the front-view camera. The front-view camera can capture images of the road ahead of the vehicle in real time and send them to the body controller. The front road image refers to the image of the road area ahead of the vehicle, which contains visual information of various objects such as roads, traffic signs, other vehicles, pedestrians, etc.

[0071] 304. The body controller obtains the distance between the vehicle and other vehicles on the road ahead through the vehicle's millimeter wave radar.

[0072] In the embodiment of the present application, the millimeter wave radar is a radar operating in the millimeter wave frequency band, which detects target objects by transmitting and receiving millimeter wave signals. After the polarizer lifting function is turned on, the body controller will establish a communication connection with the millimeter wave radar. The millimeter wave radar can measure information such as the distance, speed and angle between the vehicle and other vehicles in the road ahead, and transmit it to the body controller.

[0073] When the polarizer lifting function is turned on, the body controller obtains light information in real time through the light sensor, allowing the body controller to accurately judge the external light conditions. The image of the road ahead obtained by the front-view camera and the distance between the vehicle and other vehicles on the road ahead are obtained through the millimeter-wave radar. This allows the body controller to accurately understand the distribution of vehicles on the road ahead of the vehicle, so that the vehicle controller can subsequently accurately judge whether there are oncoming vehicles with high beams on the road ahead based on this information, thereby improving the intelligence and safety of driving.

[0074] 305. When the illumination information indicates that the external illumination intensity of the vehicle is greater than a first threshold, image recognition is performed on the image of the road section ahead to obtain a vehicle recognition result of the image of the road section ahead.

[0075] In the embodiment of the present application, the vehicle body controller continuously receives illumination information from the illumination sensor, and compares the illumination intensity value therein with a pre-set first threshold value. When the illumination intensity is detected to be greater than the first threshold value, it indicates that the external light is strong, and there may be strong reflection or glare problems. At this time, the vehicle body controller analyzes and identifies the image of the road ahead transmitted by the front camera, and obtains the vehicle recognition result of the image of the road ahead. Among them, the vehicle recognition result can indicate whether there are vehicles on the road ahead, the number of vehicles, the direction of travel of the vehicles, and other information.

[0076] 306. When the vehicle identification result indicates that there is an oncoming vehicle on the road ahead of the vehicle, if the distance between the vehicle and the oncoming vehicle continues to decrease, the body controller controls the polarizing mirror of the vehicle to flip downward.

[0077] In the embodiment of the present application, the oncoming vehicle refers to a vehicle traveling in the opposite direction to the vehicle on the road. When the vehicle identification result indicates that there is an oncoming vehicle on the road ahead of the vehicle, it means that under the current strong light environment, there is a vehicle in front of the vehicle that is traveling in the opposite direction to itself. At this time, the distance between the vehicle and the oncoming vehicle transmitted by the millimeter-wave radar can be analyzed. If it is found that the distance is constantly decreasing, it means that the two vehicles are gradually approaching. Under strong light conditions, the high beam of the oncoming vehicle will cause serious glare interference to the driver of the vehicle, affecting driving safety. In order to reduce this glare, the body controller can send a command to the driving device of the polarizer (such as a servo motor) to flip the polarizer downward to adjust the angle of the polarizer to better filter the glare from the lights of the oncoming vehicle in front and the strong light from the outside, improve the driver's field of vision, and ensure driving safety.

[0078] 307. The body controller obtains the eye position of the driver of the vehicle through the driver monitoring system of the vehicle.

[0079] In the embodiment of the present application, the driver monitoring system (DMS) is a system installed on the vehicle for real-time monitoring of the driver's status and behavior. It usually includes cameras, sensors and other equipment, which can capture information such as the driver's facial features, eye movements, head posture, etc., and then analyze whether the driver is in a state of fatigue, distraction, etc., and can also obtain data such as the driver's eye position. After controlling the polarizer to flip down, the vehicle's driver monitoring system can determine the current driver's eye position and transmit it to the body controller.

[0080] 308. The vehicle body controller adjusts the lowering height of the polarizer based on the eye position of the driver so that the lateral center line of the polarizer is aligned with the driver's line of sight.

[0081] In an embodiment of the present application, after obtaining the eye position of the driving object, the body controller will calculate the height to which the polarizer needs to be lowered according to preset rules and algorithms. Specifically, it will analyze the relationship between the eye position and the current position of the polarizer, and determine the distance the polarizer needs to move in the vertical direction in order to make the lateral center line of the polarizer flush with the driving object's line of sight. Then, the body controller will send an instruction to a drive device (such as a servo motor) that controls the lifting and lowering of the polarizer. After receiving the instruction, the drive device will drive the polarizer to drop a corresponding height in the vertical direction as required. During the descent of the polarizer, the body controller will continuously monitor the position of the polarizer and compare it with the eye position of the driving object. When the polarizer drops to a certain height, so that the lateral center line of the polarizer is aligned in the vertical direction with the driving object's line of sight obtained by calculation, the body controller will issue a stop instruction to stop the polarizer from falling.

[0082] By flipping the polarizer down and adjusting it to a height where the lateral center line of the polarizer is flush with the driver's line of sight, the polarizer can effectively cover the driver's field of vision, thereby effectively filtering out glare from the driver's line of sight, providing the driver with a clear field of vision, and further improving driving safety and comfort.

[0083] In some embodiments, the vehicle is equipped with a sun visor, the upper end of the sun visor is connected to the roof of the vehicle, and the lower end of the sun visor is connected to the polarizer. Accordingly, the body controller adjusts the descending height of the polarizer based on the eye position of the driving object, including: determining the flip angle of the sun visor based on the eye position of the driving object; and controlling the sun visor to flip downward according to the flip angle to drive the descending height of the polarizer to change.

[0084] Among them, the sun visor is usually located in front of the top of the driver and co-pilot seats. Its main function is to block the sunlight from the front or side of the vehicle, reduce the interference of sunlight on the driver's vision, and improve driving safety and comfort. When the vehicle's sun visor is designed and installed, its upper end is fixedly connected to the roof of the vehicle through a suitable connection method. This connection method allows the sun visor to flip around the connection point as the axis. The lower end of the sun visor is connected to the polarizer, and the polarizer is installed on the back of the sun visor. For example, Figure 5 Schematic diagram of the structure of a polarizer provided according to an embodiment of the present application. Figure 5As shown, the lower end of the sun visor is connected to the polarizer through the motor shaft and the bearing. This installation method not only saves the occupied area of ​​the polarizer in the car, but also can use the flipping of the sun visor to control the position of the polarizer, that is, the body controller can control the descending height of the polarizer by controlling the angle of the sun visor to flip downward. Accordingly, after obtaining the eye position information of the driving object, the body controller will calculate the angle to which the sun visor needs to be flipped according to the preset logic and algorithm to make the position of the polarizer reach a suitable descending height to meet the driver's vision requirements. For example, when the driver's eye position is low, it may be necessary to flip the sun visor to a larger angle to make the polarizer drop more; conversely, when the driver's eye position is high, the flipping angle of the sun visor can be reduced accordingly. The body controller will comprehensively consider factors such as the eye position, the installation structure of the sun visor and the polarizer, and accurately calculate the required flipping angle. After the body controller determines the flipping angle of the sun visor, it will send a command to the driving device (such as a servo motor) that controls the flipping of the sun visor. After receiving the command, the drive device drives the sun visor to flip down to a corresponding angle around the connection point with the ceiling as required. As the sun visor flips, the polarizer connected to the lower end of the sun visor will also drop down and adjust to a height suitable for the driver's line of sight, so that the polarizer can filter light more effectively and provide the driver with a clear field of vision.

[0085] It should be noted that adjusting the lowering height of the polarizer refers to adjusting the height to which the polarizer is to be lowered, for example, adjusting the height to which the polarizer is to be lowered from 2 cm to 3 cm.

[0086] For example, Figure 6 FIG. 1 is a schematic diagram of a control process of a polarizer provided according to an embodiment of the present application. Figure 6 As shown, the user can set the automatic start mode for the polarizer lifting function on the vehicle's large onboard screen. In this way, when the vehicle driving environment is night driving, the body controller can automatically turn on the polarizer lifting function, and obtain the external light intensity of the vehicle through the light sensor, and obtain the vehicle distribution situation of the road section in front of the vehicle through the front-view camera and the millimeter-wave radar. Then, when it is determined based on this information that there is an oncoming vehicle with high beam lights on the road section in front of the vehicle, it can immediately issue an instruction to the servo motor 2 to control the polarizer to flip down. In addition, the body controller can also obtain the driver's eye position transmitted by the driver monitoring system of the vehicle, and then determine the flip angle of the sun visor based on the eye position, and issue an instruction to the servo motor 1 to control the sun visor to flip down according to the flip angle. Since the lower end of the sun visor is connected to the polarizer, the lowering height of the polarizer can be adjusted by controlling the angle at which the sun visor flips downward, so that the lateral center line of the polarizer is flush with the line of sight of the driving object.

[0087] In some embodiments, after controlling the polarizer of the vehicle to flip downward, the body controller can also adjust the flip angle of the polarizer. Accordingly, the body controller obtains the eye position of the driving object of the vehicle through the driver monitoring system of the vehicle; based on the eye position of the driving object, the body controller adjusts the flip angle of the polarizer so that the plane where the polarizer is located is perpendicular to the line of sight of the driving object. After receiving the eye position information of the driving object, the body controller calculates the angle to which the polarizer needs to be adjusted according to the preset logic and algorithm. It analyzes the relationship between the eye position and the current position and angle of the polarizer, and determines the angle and direction of the polarizer that needs to be rotated around its installation axis in order to make the plane where the polarizer is located perpendicular to the line of sight of the driving object. Then, the control system sends an instruction to the driving device (such as a servo motor) of the polarizer, and the driving device drives the polarizer to flip according to the instruction and adjust its angle. During the flipping process of the polarizer, the body controller continuously monitors the angle of the polarizer and compares it with the ideal angle calculated according to the eye position of the driving object. When the polarizer flips to the point where its plane is perpendicular to the driver's line of sight calculated by calculation, the body controller will issue a stop command to stop the polarizer flipping. At this point, the polarizer is at an optimal angle, which can most effectively filter out glare from the driver's line of sight, providing the driver with a clear and comfortable field of vision, helping to improve driving safety and driving experience.

[0088] In some embodiments, after controlling the polarized mirror of the vehicle to flip down, the vehicle body controller can also perform the following operations:

[0089] (1) Control the vehicle's speakers to issue a sound reminder. The sound reminder is used to remind the driver of the oncoming vehicle to turn off the high beam. After the polarizer is flipped down, the body controller will also send a command to the vehicle's audio system. After receiving the command, the audio system controls the speakers to issue a pre-set sound pattern, such as a beep of a specific frequency, to attract the attention of the oncoming vehicle driver and make him turn off the high beam as soon as possible.

[0090] (2) Control the vehicle's lights to issue a light reminder. A light reminder refers to sending a warning or reminder message to the driver or other vehicle users by controlling the lights to light up, flash, or change the color of the lights. Here, the light reminder is used to remind the driver of the oncoming vehicle to turn off the high beam. After the polarizer is flipped down, the body controller will also send an instruction to the light control system. Based on the received instructions, the light control system controls the corresponding lights (such as flashing headlights, etc.) to send a light reminder signal to attract the attention of the oncoming vehicle driver and make him turn off the high beam as soon as possible.

[0091] By controlling the vehicle to issue sound reminders and / or light reminders, drivers of oncoming vehicles can be reminded in time to turn off their high beams, thereby reducing the interference of glare caused by high beams on the driver's vision to a certain extent, reducing the risk of misjudgment and improper operation due to obstructed vision, effectively improving driving safety at night or in low-light environments, and reducing the probability of traffic accidents.

[0092] In some embodiments, after the vehicle's polarized mirror is controlled to flip downward, if the illumination information indicates that the vehicle's external illumination intensity is not greater than a first threshold value within a preset time period, the body controller can control the vehicle's polarized mirror to flip upward to retract the polarized mirror. After the polarized mirror is flipped downward, the body controller continues to receive illumination information from the illumination sensor. The body controller compares the received illumination intensity value with the first threshold value and records the time when the illumination intensity is not greater than the first threshold value. If the external illumination intensity is always less than the first threshold value within the preset time period, it means that the current light conditions are good and the polarized mirror is no longer required to be in a flipped downward working state to filter light. Therefore, the body controller sends a new instruction to the driving device of the polarized mirror to drive the polarized mirror to flip upward to return it to its initial position or retracted state. This can reduce the obstruction of the driver's field of view by the polarized mirror, while also saving energy and reducing unnecessary wear of the polarized mirror.

[0093] The embodiment of the present application provides a method for controlling polarized mirrors. During driving, the polarized mirror lifting function can be automatically turned on when the vehicle meets the function activation conditions. After being turned on, the function can accurately and timely detect whether there is an oncoming vehicle with high beams on in the road ahead of the vehicle based on the vehicle's lighting information and the information of the vehicle in front. Then, the polarized mirror can be automatically lowered when the oncoming vehicle with high beams on is detected, without the driver having to manually lower the polarized mirror, thereby solving the driving safety hazard caused by the driver needing to take one hand off the steering wheel when manually lowering the polarized mirror, and improving driving safety. In addition, due to the visual persistence phenomenon of the human eye, the function can sense the high beam status of the oncoming vehicle earlier, so that the polarized mirror can be lowered more quickly, greatly reducing the probability of the driver being instantly blinded by the strong light of the high beam, and further improving driving safety.

[0094] Figure 7 is a block diagram of a polarizer control device provided according to an embodiment of the present application. The device is used to execute the steps of the polarizer control method described above, see Figure 7 , the device comprises:

[0095] The activation module 701 is used to activate the polarizer lifting function of the vehicle when the vehicle meets the function activation condition;

[0096] The acquisition module 702 is used to acquire the illumination information of the vehicle and the information of the vehicle ahead when the polarizer lifting function is turned on. The illumination information is used to indicate the external illumination intensity of the vehicle, and the information of the vehicle ahead is used to indicate the distribution of vehicles on the road ahead of the vehicle.

[0097] The control module 703 is used to control the vehicle's polarizer to flip downward when the illumination information indicates that the external illumination intensity of the vehicle is greater than a first threshold and the front vehicle information indicates that there is an oncoming vehicle on the road ahead of the vehicle.

[0098] In some embodiments, the function activation condition includes at least one of the following:

[0099] The light intensity in the environment where the vehicle is located is less than a second threshold;

[0100] The vehicle's display mode is night mode;

[0101] The vehicle's lights come on.

[0102] In some embodiments, the acquisition module 702 is used to obtain the vehicle's lighting information through a light sensor installed on the inside of the vehicle's front windshield when the polarizer lifting function is turned on; to obtain the image of the road ahead of the vehicle through the vehicle's front-view camera; and to obtain the distance between the vehicle and other vehicles on the road ahead through the vehicle's millimeter-wave radar.

[0103] In some embodiments, the control module 703 is used to perform image recognition on the image of the road section ahead when the lighting information indicates that the external lighting intensity of the vehicle is greater than a first threshold value to obtain a vehicle recognition result of the image of the road section ahead; when the vehicle recognition result indicates that there is an oncoming vehicle on the road ahead of the vehicle, if the distance between the vehicle and the oncoming vehicle continues to decrease, control the vehicle's polarizer to flip downward.

[0104] In some embodiments, Figure 8 is a block diagram of another polarizer control device provided according to an embodiment of the present application. Figure 8 , the device further comprises:

[0105] The adjustment module 704 is used to obtain the eye position of the driver of the vehicle through the driver monitoring system of the vehicle; based on the eye position of the driver, adjust the lowering height of the polarizer so that the lateral center line of the polarizer is aligned with the line of sight of the driver.

[0106] In some embodiments, the vehicle is equipped with a sun visor, the upper end of the sun visor is connected to the roof of the vehicle, and the lower end of the sun visor is connected to the polarizer;

[0107] The adjustment module 704 is used to determine the flip angle of the sun visor based on the eye position of the driver; and control the sun visor to flip downward according to the flip angle.

[0108] In some embodiments, the adjustment module 704 is also used to obtain the eye position of the driver of the vehicle through the driver monitoring system of the vehicle; based on the eye position of the driver, adjust the flip angle of the polarizer so that the plane where the polarizer is located is perpendicular to the line of sight of the driver.

[0109] In some embodiments, the control module 703 is further used to control the vehicle's polarizer to flip upward to retract the polarizer if the lighting information indicates that the external lighting intensity of the vehicle is not greater than a first threshold within a preset time period.

[0110] In some embodiments, the control module 703 is also used to control the speaker of the vehicle to issue a sound reminder; and control the lights of the vehicle to issue a light reminder.

[0111] The embodiment of the present application provides a control device for polarized mirrors, which can automatically turn on the polarized mirror lifting function when the vehicle meets the function activation conditions during driving. After being turned on, the function can accurately and timely detect whether there is an oncoming vehicle with high beams on in the road ahead of the vehicle based on the vehicle's lighting information and the information of the vehicle in front, and then automatically lower the polarized mirrors when the oncoming vehicle with high beams on is detected, without the driver having to manually lower the polarized mirrors, thereby solving the driving safety hazard that exists when the driver needs to take one hand off the steering wheel when manually lowering the polarized mirrors, and improving driving safety. In addition, due to the visual persistence phenomenon of the human eye, the function can sense the high beam status of the oncoming vehicle earlier, so that the polarized mirrors can be lowered more quickly, greatly reducing the probability of the driver being instantly blinded by the strong light of the high beams, and further improving driving safety.

[0112] It should be noted that: the polarizer control device provided in the above embodiment is only illustrated by the division of the above functional modules when running the application program. In actual application, the above functions can be assigned to different functional modules as needed, that is, the internal structure of the device is divided into different functional modules to complete all or part of the functions described above. In addition, the polarizer control device provided in the above embodiment and the polarizer control method embodiment belong to the same concept, and the specific implementation process is detailed in the method embodiment, which will not be repeated here.

[0113] Fig. 9 It is a structural schematic diagram of a vehicle body controller provided according to an embodiment of the present application.

[0114] Generally, the vehicle body controller 900 includes: a main control module 901, a CAN interface 902, a hard-line input interface 903 and a hard-line output interface 904. The main control module 901 is connected to the CAN interface 902, the hard-line input interface 903 and the hard-line output interface 904 respectively.

[0115] The main control module 901 generally includes a processor and a memory. Among them, the processor may include one or more processing cores, such as a 4-core processor, a 9-core processor, etc. The processor may be implemented in at least one hardware form of DSP (Digital Signal Processing), FPGA (Field-Programmable Gate Array), and PLA (Programmable Logic Array). The processor may also include a main processor and a coprocessor. The main processor is a processor for processing data in the awake state, also known as a CPU (Central Processing Unit); the coprocessor is a low-power processor for processing data in the standby state. In some embodiments, the processor may be integrated with a GPU (Graphics Processing Unit), which is responsible for rendering and drawing the content to be displayed on the vehicle display screen. In some embodiments, the processor may also include an AI (Artificial Intelligence) processor, which is used to process computing operations related to machine learning. The memory may include one or more computer-readable storage media, which may be non-transitory. The memory may also include a high-speed random access memory and a non-volatile memory, such as one or more disk storage devices and flash storage devices. In some embodiments, the non-transitory computer-readable storage medium in the memory is used to store at least one computer program, and the at least one computer program is used to be executed by the processor to implement the control method of the polarizer provided in the method embodiment of the present application.

[0116] The CAN interface 902 may include a power CAN interface, a motor CAN interface, and a diagnostic CAN interface, wherein the power CAN interface is used to communicate with a power system module of the vehicle, the motor CAN interface is used to communicate with a motor controller of the vehicle, and the diagnostic CAN interface is used to communicate with a diagnostic device.

[0117] The hard-wire input interface 903 is used to receive hard-wire control signals. The hard-wire output interface 904 is used to send control instructions to the electronic control components of the vehicle so that the electronic control components of the vehicle perform corresponding actions. The electronic control components of the vehicle include a power management system, a motor controller, an on-board charger, etc.

[0118] The main control module 901 can communicate with the vehicle's power system module, motor controller and diagnostic equipment through the CAN interface 902, and generate control instructions based on the hard-wired control signal received by the hard-wired input interface 903 to send control instructions to the vehicle's electronic control components through the hard-wired output interface 904.

[0119] Those skilled in the art will understand that Fig. 9 The structure shown in the figure does not constitute a limitation on the vehicle body controller 900, and may include more or less components than those shown in the figure, or combine certain components, or adopt a different component arrangement.

[0120] The embodiment of the present application further provides a computer-readable storage medium, in which at least one computer program is stored, and the at least one computer program is loaded and executed by a processor of an electronic device to implement the operation performed by the electronic device in the control method of the polarizer of the above embodiment. For example, the computer-readable storage medium can be a read-only memory (ROM), a random access memory (RAM), a compact disc read-only memory (CD-ROM), a magnetic tape, a floppy disk, an optical data storage device, etc.

[0121] The embodiment of the present application further provides a computer program product, including a computer program, wherein the computer program is loaded and executed by a processor to implement the control method of the polarizer as described in the above embodiment.

[0122] A person skilled in the art will understand that all or part of the steps to implement the above embodiments may be accomplished by hardware or by instructing related hardware through a program, and the program may be stored in a computer-readable storage medium, and the above-mentioned storage medium may be a read-only memory, a disk or an optical disk, etc.

[0123] The above description is only an optional embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A method for controlling a polarizer, characterized in that: Applied to a vehicle, the method comprises: When the vehicle meets the function activation condition, activating the polarizer lifting function of the vehicle; When the polarizer lifting function is turned on, obtaining illumination information of the vehicle and information of the vehicle ahead, wherein the illumination information is used to indicate the external illumination intensity of the vehicle, and the vehicle ahead information is used to indicate the distribution of vehicles on the road ahead of the vehicle; When the illumination information indicates that the external illumination intensity of the vehicle is greater than a first threshold and the front vehicle information indicates that there is an oncoming vehicle on the road ahead of the vehicle, the polarizer of the vehicle is controlled to flip downward.

2. The method according to claim 1, characterized in that The function activation condition includes at least one of the following: The light intensity in the environment where the vehicle is located is less than a second threshold; The display mode of the vehicle is night mode; The vehicle's lights come on.

3. The method according to claim 1, characterized in that When the polarizer lifting function is turned on, obtaining the illumination information of the vehicle and the information of the vehicle ahead includes: When the polarizer lifting function is turned on, obtaining illumination information of the vehicle through an illumination sensor installed on the inner side of the front windshield of the vehicle; Acquiring an image of a road section in front of the vehicle through a front-view camera of the vehicle; The distance between the vehicle and other vehicles on the road ahead is obtained through the millimeter wave radar of the vehicle.

4. The method according to claim 3, characterized in that When the illumination information indicates that the external illumination intensity of the vehicle is greater than a first threshold and the front vehicle information indicates that there is an oncoming vehicle on the road ahead of the vehicle, controlling the polarizer of the vehicle to flip downward includes: When the illumination information indicates that the external illumination intensity of the vehicle is greater than a first threshold, performing image recognition on the road section ahead image to obtain a vehicle recognition result of the road section ahead image; When the vehicle recognition result indicates that there is an oncoming vehicle on the road ahead of the vehicle, if the distance between the vehicle and the oncoming vehicle continues to decrease, the polarizing mirror of the vehicle is controlled to flip downward.

5. The method according to claim 1, characterized in that After controlling the polarizer of the vehicle to flip downward, the method further includes: obtaining, by means of a driver monitoring system of the vehicle, an eye position of a subject driving the vehicle; Based on the eye position of the driving object, the lowering height of the polarizer is adjusted so that the lateral center line of the polarizer is aligned with the sight line of the driving object.

6. The method according to claim 5, characterized in that The vehicle is equipped with a sun visor, the upper end of the sun visor is connected to the roof of the vehicle, and the lower end of the sun visor is connected to the polarizer; The adjusting the descending height of the polarizer based on the eye position of the driving object comprises: Determining a flip angle of the sun visor based on the eye position of the driving subject; According to the flipping angle, the sun visor is controlled to flip downward to drive the lowering height of the polarizer to change.

7. The method according to claim 1, characterized in that After controlling the polarizer of the vehicle to flip downward, the method further includes: obtaining, by means of a driver monitoring system of the vehicle, an eye position of a subject driving the vehicle; Based on the eye position of the driving object, the flip angle of the polarizer is adjusted so that the plane where the polarizer is located is perpendicular to the line of sight of the driving object.

8. A control device for a polarizer, characterized in that: Configured in a vehicle, the device comprises: An activation module, used for activating the polarizer lifting function of the vehicle when the vehicle meets the function activation condition; an acquisition module, used to acquire illumination information of the vehicle and information of the vehicle ahead when the polarizer lifting function is turned on, wherein the illumination information is used to indicate the external illumination intensity of the vehicle, and the vehicle ahead information is used to indicate the distribution of vehicles on the road ahead of the vehicle; The control module is used to control the polarizer of the vehicle to flip downward when the illumination information indicates that the external illumination intensity of the vehicle is greater than a first threshold and the front vehicle information indicates that there is an oncoming vehicle on the road ahead of the vehicle.

9. A vehicle body controller, characterized in that: The vehicle body controller includes a main control module, which includes a processor and a memory, wherein the memory is used to store at least one computer program, and the at least one computer program is loaded by the processor and executed by the control method of the polarizer according to any one of claims 1 to 7.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium is used to store at least one computer program, and the at least one computer program is used to execute the control method of the polarizer according to any one of claims 1 to 7.

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