Side backward visual safety method for intelligent electronic rearview mirror

Abstract

The invention relates to the technical field of vehicle safety, and provides an intelligent electronic rearview mirror side backward visual safety method which comprises the steps that S101, whether a vehicle is in a lane changing mode or not is judged based on the current speed and the steering signal state of the vehicle; s102, outputting a corresponding control instruction according to a judgment result; s103, adjusting the magnification of a wide-angle lens of the intelligent electronic rearview mirror to adapt to the lane changing requirement; s104, generating a real-time enhanced side backward image based on the adjusted lens parameters, the scheme of the embodiment of the invention aims to enhance the safety and definition of the side backward view in the lane changing process of the vehicle, ensure that a driver can still have an optimal view angle under the conditions of different vehicle speeds and steering lamp signals, and improve the driving safety of the vehicle. Particularly, the problem of narrow short-distance view under complex conditions of high speed, low speed and the like is solved.

Description

Technical Field

[0001] This application relates to the technical field of vehicle safety, and particularly to an intelligent electronic rearview mirror side-rear visibility safety method. Background Art

[0002] An intelligent electronic rearview mirror is an automotive device that utilizes advanced electronic technology, integrates multiple functions, and provides a more convenient and safe driving experience for drivers. The external camera, like a visual sensor, converts light into an electrical signal and then quickly transmits the image information to the in-vehicle display through a data transmission line. Some intelligent electronic rearview mirrors also use image processing algorithms to optimize and analyze the captured images, such as enhancing image clarity in adverse weather conditions, detecting and identifying objects such as vehicles, pedestrians, and obstacles; Currently, for the technologies and measures of vehicles to obtain a clear rear-side view and improve driving safety, some electronic rearview mirror side-rear visibility safety methods are used. Among them, the electronic rearview mirror side-rear visibility safety method mainly provides a wider field of view and clear rear-side images by using a wide-angle camera and image processing technology, helping the driver better grasp the vehicle's surrounding environment. The system can dynamically adjust the image display and enhance safety during lane changes and reverse driving.

[0003] Regarding the problem of how to adjust the magnification of the wide-angle lens of an intelligent electronic rearview mirror according to the vehicle speed and steering signal status, the existing solutions may not be perfect enough, especially in the case of a narrow field of view during a close-range lane change; for example, when driving at a low speed or starting to turn on the turn signal to prepare for a lane change, if the lens magnification cannot be adjusted in a timely manner according to the actual situation, it may cause the driver to fail to obtain sufficient information to accurately judge the situation of the adjacent lane, thereby affecting driving safety and smoothness; Therefore, improving this function is one of the important directions to enhance the overall performance of intelligent electronic rearview mirrors. Summary of the Invention

[0004] In view of this, the embodiments of the present disclosure provide an intelligent electronic rearview mirror side-rear visibility safety method, which at least partially solves the problem that when driving at a low speed or starting to turn on the turn signal to prepare for a lane change, if the lens magnification cannot be adjusted in a timely manner according to the actual situation, it may cause the driver to fail to obtain sufficient information to accurately judge the situation of the adjacent lane, thereby affecting driving safety and smoothness; Therefore, improving this function is one of the important directions to enhance the overall performance of intelligent electronic rearview mirrors. Therefore, the following describes an intelligent electronic rearview mirror side-rear visibility safety method of the present invention, including: S101: Determine whether it is in the lane change mode based on the current vehicle speed and steering signal status; S102: Output corresponding control instructions according to the judgment result; S103: Adjust the magnification of the wide - angle lens of the intelligent electronic rearview mirror to meet the lane - changing requirements; S104: Generate a real - time enhanced side - rear image based on the adjusted lens parameters.

[0005] In a specific embodiment, determine whether the lane - changing mode is activated based on the following formula: , where is the current speed of the vehicle, is the minimum speed threshold for triggering the lane - changing mode, is the steering signal status coefficient, is a system constant; If C > Th, it is determined that the vehicle enters the lane - changing mode; Adjust the initial magnification of the wide - angle lens to according to the lane - changing mode; At the same time, reduce the lens field of view to adapt to the observation of close - range targets.

[0006] In a specific embodiment, further determine the impact of vehicle acceleration or deceleration on the wide - angle lens after entering the lane - changing mode; Set the acceleration threshold , based on the real - time acceleration a, when is satisfied, adjust the lens parameters; Increase the magnification of the wide - angle lens to to ensure capturing a wider scene; At this time, the vertical viewing angle of the lens is reduced to meet the requirements of high - speed driving.

[0007] In a specific embodiment, when the turn signal remains on for more than , trigger a further magnification control logic; The horizontal magnification of the wide - angle lens reaches to improve lane - changing safety; Set the detection distance for close - range vehicles to ; Use an ultrasonic sensor to measure the minimum safe distance in the adjacent lane as , where is the vehicle length, and adjust the lens view angle to ensure full coverage of the area within this distance.

[0008] In a specific embodiment, if the vehicle distance detection system detects an object approaching from the right and the distance , it indicates a potential collision risk; Trigger an emergency warning mechanism for the right - turn lane - changing mode; Quickly increase the focal length of the wide - angle lens to the preset maximum value, making the picture more focused on the potential threat point; The system will continue to monitor until the dangerous object leaves the blind spot, then automatically restore the normal settings and output a warning cancellation signal.

[0009] In a specific embodiment, taking into account the different driving conditions at night, the intelligent enhancement function is turned on at night; Monitor ambient light intensity Change, according to the relationship , when the light intensity is lower than the set reference intensity ; Zoom the wide-angle lens to maximum magnification to compensate for visibility loss in dim conditions and optimize image contrast; Anti-shake processing technology is added to maintain image stability and improve driver judgment.

[0010] In one embodiment, it is determined whether there are pedestrians or other static obstacles in the left / right turn lane and the minimum passing space is set. ,here It is the safe width between the side of the vehicle and the boundary of the pedestrian crossing; The distance from any point on the pedestrian path to the ground level; is the extra margin to ensure complete avoidance of collision; exist When the length is greater than or equal to the total length, the side mirror portion of the electronic display screen is made to give priority to magnifying the display ratio of the direction where the pedestrian is located; If a pedestrian intrudes, the HUD projection will prompt the driver to drive carefully.

[0011] In a specific embodiment, the vehicle dynamic positioning GPS is used to obtain the angle between the vehicle's driving direction and the target lane. , where △x and △y represent the two position vector differential components in the horizontal and vertical directions in the coordinate system respectively; According to this angle, the angle category of the upcoming turn is determined, and the camera angle solution to be called is decided; Right turn angle In the interval Within, choose an appropriate zoom-in strategy to cover all important traffic elements; In the same situation, if there is a reverse lane on the opposite side, the amplification factor should be immediately increased to , expanding the visible range to ensure smooth oncoming traffic.

[0012] In a specific embodiment, in combination with θ in the previous claim, the visual difference problem caused by relative motion during lane change is considered; Setting virtual parallax ,in Refers to the distance between the front and rear vehicles. Characterize the lateral deviation caused by uneven vehicle speed; Perform fine-tuning correction on the wide-angle lens to reduce the risk of misidentification while ensuring that the actual object is not deformed and correctly reflected to the user interface; Adjust the depth of field (DOF) of the focal plane according to the actual situation so that the clear area can completely cover the key elements within the entire area of concern. In a specific embodiment, introduce an artificial intelligence algorithm to predict the success rate of lane changes Comprehensively consider the influence of weather factors σ, such as humidity and rainfall, on the road surface friction, where x represents the input feature set including the above information; The possibility of prediction failure Set up a warning threshold ; When Trigger an alarm action; Overlay semi-transparent red and blue indicator lights on the intelligent rearview mirror to distinguish high- and low-risk scenarios for warning purposes; In addition to the sound alarm, cooperate with the vibrating steering wheel to enhance the efficiency of conveying emergency situations.

[0013] In a specific embodiment, use big data to count the frequent occurrence points of all accidents in the same type of road conditions in the past as prior knowledge to guide decision-making; Construct a probabilistic graph model , is a combination of a series of attribute variables in the historical sample dataset represents the set of problem event chains that may be encountered; Evaluate the uncertainty of the upcoming lane change section according to the Bayesian estimation principle , and according to Dynamically adjust the parameter configuration of the lens; Develop a supporting APP application to synchronously push risk level information to help vehicle owners prepare corresponding preventive measures in advance.

[0014] In this way, each newly proposed dependent patent can better solve the problem of narrow vision in close-range lane changes, and at the same time has certain creativity and technological innovation points.

[0015] The embodiments of the present disclosure provide an intelligent electronic rearview mirror side and rear view safety method. The purpose of this solution is to enhance the safety and clarity of the side and rear view during vehicle lane changes, ensuring that the driver can still have an optimal viewing angle under different vehicle speeds and turn signal conditions, especially to solve the problem of narrow close-range vision in complex situations such as high speed and low speed. During vehicle driving, lane change operations are relatively common but potentially risky behaviors. When a driver intends to change lanes, the side and rear view conditions of the vehicle play a crucial role in driving safety: In order to effectively ensure that the driver can have an optimal viewing angle under various vehicle speed conditions and different turn signal states, this application is committed to enhancing the safety and clarity of the side and rear vision during vehicle lane changes. Through the solutions in the embodiments, it focuses on solving the problem of narrow close-range vision in complex situations such as high speed and low speed, enabling the driver to clearly and accurately grasp all-round information about the side and rear of the vehicle during lane change operations, greatly enhancing the safety during lane change and effectively reducing the incidence of traffic accidents. Brief Description of the Drawings

[0016] In order to more clearly illustrate the technical solutions of the exemplary embodiments of the present disclosure, the following will briefly introduce the drawings required for use in the embodiments. It should be understood that the following drawings only show some embodiments of the present disclosure, and thus should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other relevant drawings can also be obtained based on these drawings.

[0017] Figure 1 It is a flowchart of a method for side and rear visual safety of an intelligent electronic rearview mirror. Detailed Embodiments

[0018] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including a..." does not exclude the existence of additional identical elements in the process, method, article or device including the said element.

[0019] Next, with reference to the drawings, a method for side and rear visual safety of an intelligent electronic rearview mirror of the present invention and each step will be described, and the specific manner in which it solves the problem of narrow vision during close-range lane change will be analyzed. In this process, meticulous regulation based on the current vehicle speed and turn signal state is the core means; In this process, first, it is determined whether the vehicle enters a situation that requires special attention to the side conditions (i.e., preparing to change lanes) based on the current vehicle speed and the status of the turn signal. If it is determined according to the algorithm analysis that this period belongs to the situation where a lane change operation is being considered or has been initiated, the system will further generate corresponding operation control commands. These commands will be specifically used to adjust the intelligent device installed on the vehicle body - namely, the rearview mirror device with an electronically wide-angle lens with a focus adjustment function. This stage mainly involves the selection and setting of optical properties such as the magnification and focal length of the wide-angle lens, aiming to make the imaging quality reach the best state that not only meets the requirements of driving safety regulations but also satisfies the user's intuitive visual habits. Aiming at the problem that traditional mechanically fixed-specification rearview mirrors cannot dynamically adjust the viewing angle, and the potential safety hazards brought when the vehicle is in a specific speed range, especially when performing short-distance and high-frequency lane change operations, this method can evaluate and automatically optimize the imaging effect in real time.

[0020] By integrating the vehicle dynamics model and traffic flow patterns, and combining deep learning algorithms to analyze the real-time road condition data stream (including elements such as surrounding obstacles and the moving trajectories of other vehicles). When it is detected that the vehicle is about to perform a lane change action, the algorithm can accurately capture the critical moment, such as starting to monitor from the moment the turn signal is turned on and continuously tracking until the change is completed or the intention is cancelled; once it is confirmed as a valid request, the corresponding parameter adjustment program will be immediately started to quickly adapt to different lane change scenarios. Specifically, at a relatively high driving speed, in order to ensure sufficient far-end coverage and not miss potential risk sources, the system will make the camera work in a relatively small but efficient viewing angle range, while keeping the overall picture stable and clear, expanding the area of the observation window in the distance; while in a relatively low-speed environment for making decisions on minor offset change paths, it tends to adopt a larger magnification scale to make up for the potentially lost important information, especially paying attention to small transportation tools such as cyclists and non-motor vehicles that quickly appear and briefly exist in the blind area near the vehicle itself. This can significantly alleviate the problem of observation loss caused by the limitations of the curvature design of conventional reflective surfaces. At the same time, by increasing the frame rate of the images output by the camera component, a more smooth and coherent animation sequence is generated for human perception and judgment, and image processing technical means are synchronously applied to eliminate moiré and glare interference phenomena to improve night recognition. Finally, the augmented reality (AR) module superimposes and annotates the corrected real-space information on the display interface and feeds it back to the driver for reference, comprehensively improving the travel safety index; Among them, traditional rearview mirrors have limited fields of view. Especially when changing lanes at close range, it is difficult to comprehensively observe the situation on the side and rear. The core innovation of this intelligent electronic rearview mirror's side and rear visibility safety method lies in dynamically and intelligently adjusting the wide-angle lens of the rearview mirror based on the current vehicle speed and the status of the turn signal to solve the problem of narrow fields of view when changing lanes at close range.

[0021] Precise Judgment and Basic Adjustment of Lane Change Mode: Lane Change Mode Judgment: Through the formula Precisely judge whether the lane change mode is activated, where is the current speed of the vehicle, is the minimum speed threshold for triggering the lane change mode, is the steering signal status coefficient, which is 1 when the turn signal is on and 0 when it is off, is a system constant. When C > Th, it is determined that the lane change mode is entered. This judgment method comprehensively considers the vehicle speed and the steering signal, can accurately identify the driver's lane change intention, and is more reliable than relying on a single factor for judgment; Basic Adjustment of the Lens: Once it is determined that the lane change mode is entered, the system will adjust the initial magnification of the wide-angle lens to , and at the same time reduce the lens field of view. This is done to focus attention on the close area behind and to the side of the vehicle during lane change, so that the driver can more clearly observe close targets, such as a vehicle closely following behind or a suddenly emerging pedestrian, etc., effectively solving the problem of narrow close-range vision and greatly improving the perception ability of close-range dangers during lane change.

[0022] Adaptive Adjustment of the Lens under Changing Driving States: Adjustment under the Influence of Acceleration: After entering the lane change mode, the system further judges the impact of vehicle acceleration or deceleration on the wide-angle lens, and sets the acceleration threshold , when the real-time acceleration satisfies , adjust the lens parameters, increase the magnification of the wide-angle lens to , and at the same time reduce the vertical viewing angle of the lens. This adjustment method takes into account that when the vehicle is accelerating, a broader scene capture ability is needed to deal with potential rapidly approaching dangers, such as a vehicle approaching rapidly from behind. By increasing the magnification and adjusting the viewing angle, it can not only ensure capturing potential dangers in the distance but also maintain attention on the close area, achieving an optimized field of view that takes into account both the near and far.

[0023] Adjustment when the Turn Signal is Continuously On: When the turn signal remains on for more than , trigger a further magnification control logic, and the horizontal magnification of the wide-angle lens reaches to improve lane change safety. At the same time, set the detection distance for close vehicles to , and use the ultrasonic sensor to measure the minimum safe distance in the adjacent lane as (where (the vehicle length), adjust the lens angle of view to ensure full coverage of the area within this distance. This adjustment mechanism further enhances the ability to observe the areas within the short distance and the specific safety distance in the case where the turn signal is turned on for a long time, that is, when the vehicle may be in a complex lane-changing scenario, providing more comprehensive safety protection for the driver.

[0024] Emergency adjustment in case of potential collision danger: If the vehicle distance detection system detects an object approaching from the right and the distance , indicating potential collision danger, for the right-turn lane-changing mode, an emergency warning mechanism is triggered. The system will quickly increase the focal length of the wide-angle lens to the preset maximum value, making the picture more focused on the potential threat point, continuously monitoring until the dangerous object leaves the blind area and then automatically restoring the normal settings and outputting a warning cancellation signal. This lens adjustment in an emergency can instantly direct the driver's attention to the most critical potential danger point, buying more response time for the driver and effectively reducing the collision risk.

[0025] Intelligent enhancement in night and low-light environments: Considering the different driving conditions at night, the intelligent enhancement function is turned on at night to monitor the ambient light intensity change. According to the relationship , when the light is lower than the set reference intensity, that is , the wide-angle lens is magnified to the maximum multiple to compensate for the loss of visibility in the dim condition, and the image contrast is optimized. The anti-shake processing technology is added to maintain the stability of the picture. In night or low-light environments, the visibility of traditional rearview mirrors is greatly reduced. However, this method significantly improves the driver's ability to observe the situation on the side and rear in such harsh environments through intelligent lens adjustment and image processing technology, enabling the driver to clearly judge the surrounding environment as in the daytime and effectively reducing the safety hazards of lane-changing at night.

[0026] Pedestrian and static obstacle detection and reminder: Confirm whether there are pedestrians or other static obstacles on the left / right turn lanes, set the minimum passing space , as the safety width between the side of the vehicle body and the boundary of the crosswalk, as the distance from any point on the pedestrian walkway to the ground plane, is the additional margin), when is greater than or equal to the total length, the side-view mirror part in the electronic display preferentially enlarges the display ratio of the direction where the pedestrian is located; if a pedestrian intrudes, the driver is reminded to drive carefully through HUD projection. This technology can timely detect potential pedestrian or static obstacle risks when the vehicle turns or changes lanes, and through the enlarged display and reminder functions, attract the driver's attention, avoid the occurrence of collision accidents, and improve the safety of the vehicle in complex traffic environments.

[0027] Optimization of Camera Angle Based on Vehicle Dynamic Positioning: Using vehicle dynamic positioning GPS to obtain the angle between the vehicle's own driving direction and the target lane ( and represent the differential components of two position vectors along the horizontal and vertical directions in the coordinate system respectively), determine the angle category of the upcoming turn based on this angle, decide the camera angle scheme to be called, and for a right turn angle in the interval , select an appropriate magnification strategy to cover all important traffic elements; if an oncoming reverse lane is detected, immediately increase the magnification factor to , expand the visible range to ensure smooth passing of oncoming vehicles. By using vehicle dynamic positioning information, the system can intelligently adjust the camera angle and magnification strategy according to different driving directions and angles, ensuring that the driver can obtain the best field of view in various turning and passing scenarios, improving driving safety and convenience.

[0028] Visual Difference Correction during Lane Change: Combining the above angle , consider the visual difference problem caused by relative motion during lane change, set a virtual parallax ( refers to the distance between the front and rear vehicles, characterizes the lateral deviation caused by uneven vehicle speed), perform fine-tuning correction on the wide-angle lens to reduce the risk of misidentification while ensuring that the actual object is not deformed and correctly reflected to the user interface, adjust the depth of field DOF according to the actual situation so that the clear area can completely cover the key elements within the entire area of concern. This technology effectively solves the problem of object misjudgment caused by visual difference during lane change, ensures that the image seen by the driver is real and accurate, improves the accuracy of the driver's judgment of the surrounding environment, and further enhances the safety of lane change.

[0029] Artificial Intelligence Algorithm Prediction and Warning: Introduce an artificial intelligence algorithm to predict the success rate of lane change , comprehensively consider the influence of weather factors etc. on the road surface friction ( represents the input feature set including the above information), set a warning threshold for the possibility of prediction failure , when , trigger an alarm action, superimpose semi-transparent red and blue indicator lights on the intelligent rearview mirror to distinguish high and low risk scenarios for warning. In addition to the sound alarm, cooperate with vibrating the steering wheel to enhance the efficiency of conveying emergency situations. Through the artificial intelligence algorithm, the system can predict the risk of lane change in advance and issue various forms of alarms in a timely manner when the risk is high, reminding the driver to operate carefully, greatly reducing the accident rate during lane change, and providing more comprehensive safety protection for the driver.

[0030] Big data - assisted decision - making: Using big data to statistically analyze the frequent accident points under the same type of road conditions in the past as prior knowledge to guide decision - making, and constructing a probabilistic graph model ( is a combination of a series of attribute variables in the historical sample dataset, and represents the set of problem event chains that may be encountered), and evaluating the uncertainty of the upcoming lane - changing section according to the Bayesian estimation principle and according to dynamically adjust the parameter configuration of the lens, develop a corresponding APP - side application program, and synchronously push risk - level information to help vehicle owners prepare corresponding preventive measures in advance. The application of big data enables the system to draw on historical experience, evaluate and predict the lane - changing risks of different sections, so as to adjust the parameters of the rear - view mirror lens in advance, provide more targeted vision optimization for drivers. At the same time, the risk - pushing function on the APP side allows drivers to understand the potential risks during the journey before departure, make full preparations, and further improve driving safety.

[0031] Although the embodiments of the present application have been shown and described above, it can be understood that the above - mentioned embodiments are exemplary and should not be construed as limiting the present application. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above - mentioned embodiments within the scope of the present application.

[0032] In the description of this specification, the descriptions referring to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0033] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" can explicitly or implicitly include at least one of such features. In the description of the present application, "a plurality" means two or more unless otherwise specifically defined.

[0034] Any process or method description represented in a flowchart or otherwise described herein can be understood to represent a module, segment, or portion of code including one or more executable instructions for implementing a specific logical function or process. And the scope of the preferred embodiments of the present application includes additional implementations, where functions may be performed in a substantially simultaneous manner or in an order opposite to that shown or discussed, according to the functions involved, rather than in the order shown or discussed.

[0035] The logic and / or steps represented in a flowchart or otherwise described herein, for example, can be considered a sequenced list of executable instructions for implementing a logical function, and can be embodied specifically in any computer-readable medium for use by or in connection with an instruction execution system, apparatus, or device, such as a computer-based system, a system including a processor, or other systems that can fetch and execute instructions from the instruction execution system, apparatus, or device.

[0036] It should be understood that various parts of the present application can be implemented by hardware, software, firmware, or a combination thereof. In the above embodiments, multiple steps or methods can be implemented by software or firmware stored in a memory and executed by a suitable instruction execution system. All or part of the steps of the method in the above embodiments can be completed by a program instructing relevant hardware. The program can be stored in a computer-readable storage medium. When the program is executed, it includes one or a combination of the steps of the method embodiments.

[0037] In addition, each functional unit in various embodiments of the present application can be integrated in a processing module, or each unit can exist physically alone, or two or more units can be integrated in a module. The above integrated module can be implemented in the form of hardware or in the form of a software functional module. When the above integrated module is implemented in the form of a software functional module and sold or used as an independent product, it can also be stored in a computer-readable storage medium. The storage medium can be a read-only memory, a magnetic disk, an optical disk, etc.

[0038] The above is only the specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art within the technical scope disclosed in the present application can easily think of various changes or substitutions, and these should all be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A smart electronic rearview mirror side rear visual safety method, characterized in that: include: S101: determining whether the vehicle is in a lane change mode based on the current speed and turn signal status of the vehicle; S102: Outputting corresponding control instructions according to the judgment result; S103: Adjust the magnification of the wide-angle lens of the smart electronic rearview mirror to adapt to lane change requirements; S104: Generate a real-time enhanced side rearward image based on the adjusted lens parameters.

2. The method for side rear visual safety of an intelligent electronic rearview mirror according to claim 1, characterized in that: Whether the lane change mode is activated is determined based on the following formula: ,in is the current speed of the vehicle, The minimum speed threshold for triggering the lane change mode. is the turn signal state coefficient, is a system constant; If C>Th, it is determined to enter the lane change mode; Adjust the initial magnification of the wide-angle lens to ; At the same time, the lens field of view is reduced to adapt to the observation of close-range targets.

3. The method for side rear visual safety of an intelligent electronic rearview mirror according to claim 2, characterized in that: Further determine the impact of vehicle acceleration or deceleration on the wide-angle lens after entering the lane change mode; Setting the acceleration threshold , based on the real-time acceleration a, when When adjusting the lens parameters; Increase the wide-angle lens magnification to , ensuring that a wider scene is captured; At this time, the vertical viewing angle of the lens is reduced to meet the needs of high-speed driving.

4. The method for side rear visual safety of an intelligent electronic rearview mirror according to claim 3, characterized in that: When the turn signal is kept on for more than , triggering further amplification and regulation logic; The horizontal magnification of the wide-angle lens reaches , improve lane change safety; For close-range vehicles, the detection distance is set to ; The minimum safe distance between adjacent lanes measured by ultrasonic sensors is ,in is the length of the vehicle, adjust the lens angle to ensure full coverage of the area within this distance.

5. The method for side rear visual safety of an intelligent electronic rearview mirror according to claim 4, characterized in that: If the vehicle distance detection system detects an object approaching from the right , indicating a potential collision hazard; Triggering the emergency warning mechanism in the right lane change mode; Rapidly increase the focal length of the wide-angle lens to the preset maximum value, so that the image is more focused on potential threat points; The system will continue to monitor until the dangerous object leaves the blind spot, then automatically restore the normal settings and output a warning cancellation signal.

6. The method for side rear visual safety of an intelligent electronic rearview mirror according to claim 5, characterized in that: Considering the different driving conditions at night, the intelligent enhancement function is turned on at night; Monitor ambient light intensity Change, according to the relationship , when the light intensity is lower than the set reference intensity ; Zoom the wide-angle lens to maximum magnification to compensate for visibility loss in dim conditions and optimize image contrast; Anti-shake processing technology is added to maintain image stability.

7. The method for side rear visual safety of an intelligent electronic rearview mirror according to claim 6, characterized in that: Check whether there are pedestrians or other static obstacles in the left / right turn lane and set the minimum passing space ,here It is the safe width between the side of the vehicle and the boundary of the pedestrian crossing; The distance from any point on the pedestrian path to the ground level; is the extra margin to ensure complete avoidance of collision; exist When the length is greater than or equal to the total length, the side mirror portion of the electronic display screen is made to give priority to magnifying the display ratio of the direction where the pedestrian is located; If a pedestrian intrudes, the HUD projection will prompt the driver to drive carefully.

8. The method for side rear visual safety of an intelligent electronic rearview mirror according to claim 7, characterized in that: Use vehicle dynamic positioning GPS to obtain the angle between the vehicle's driving direction and the target lane , where △x and △y represent the two position vector differential components in the horizontal and vertical directions in the coordinate system respectively; According to this angle, the angle category of the upcoming turn is determined, and the camera angle solution to be called is decided; Right turn angle In the interval Within, choose an appropriate zoom-in strategy to cover all important traffic elements; In the same situation, if there is a reverse lane on the opposite side, the amplification factor should be immediately increased to , expand the visible range.

9. The method for side rear visual safety of an intelligent electronic rearview mirror according to claim 8, characterized in that: In combination with the preceding claim , considering the visual difference problem caused by relative motion during lane change; Setting virtual parallax ,in Refers to the distance between the front and rear vehicles. Characterizes the lateral deviation caused by uneven vehicle speed; Fine-tune the wide-angle lens to reduce the risk of misrecognition while ensuring that real objects are not deformed and are correctly reflected in the user interface; Adjust the focal plane depth DOF according to actual conditions so that the clear area can completely cover the key elements in the entire area of ​​interest.

10. The method for side rear visual safety of an intelligent electronic rearview mirror according to claim 9, characterized in that: Introducing artificial intelligence algorithms to predict lane change success rates Comprehensively consider the influence of weather factors σ, such as humidity and rainfall, on road surface friction, where x represents the input feature set including the above information; The probability of prediction failure Establishing warning thresholds ;when When the alarm action is triggered; A translucent red and blue indicator light is superimposed on the smart rearview mirror to distinguish between high-risk and low-risk scenarios; In addition to the sound alarm, the steering wheel vibrates to enhance the efficiency of emergency communication; Among them, big data is used to count the frequency points of all accidents under the same type of road conditions in the past as prior knowledge to guide decision-making; Building a probabilistic graphical model , It is a series of attribute variable combinations in the historical sample data set It indicates the set of problem event chains that may be encountered; Evaluate the uncertainty of the upcoming road change section based on the Bayesian estimation principle , and according to Dynamically adjust lens parameter configuration.

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