Automobile door opening early warning control method

Abstract

The invention discloses an automobile door opening early warning control method which comprises the steps that motion information of objects around an automobile is collected through a sensor, the door opening collision risk level is judged based on the motion information of the objects around the automobile, and door opening early warning is conducted in a corresponding early warning mode based on the door opening collision risk level. The method has the advantages that early warning is carried out in multiple modes after the collision risk is detected, the early warning effect is improved, meanwhile, multiple operation measures are designed, and the collision risk existing in door opening is reduced.

Description

Technical Field

[0001] The invention relates to the field of automobile door opening early warning control, and in particular to an automobile door opening early warning control method for reducing the occurrence of door opening accidents. Background Art

[0002] With the continuous development of related technologies, the cost of key components such as sensors and chips will gradually decrease, which will help improve the safety of the entire automotive market, reduce the accident rate caused by opening car doors, and protect the lives and property of more passengers and pedestrians.

[0003] In the prior art, "door opening kill" incidents occur frequently due to improper door opening. Door opening kill refers to the situation of the vehicle behind the vehicle when the occupants open the door rashly without observing the vehicle, resulting in the open door colliding with a passing vehicle or pedestrian, thereby causing an accident.

[0004] In order to solve the problem of door-opening collision, the existing technology often uses a door-opening warning system to warn the vehicle. The conventional solution includes using the radar or camera behind the vehicle to collect moving objects behind the vehicle to determine whether there is a risk of collision. If there is a risk of collision, a collision warning will be issued, and a warning reminder of the collision will be issued by voice. However, this method of the existing technology has the following defects: 1. The warning method is too simple and may be ignored by the occupants in the car; 2. The defects such as door-opening collision cannot be effectively avoided by warning methods such as sound alone. The operating measures after detecting the risk of door-opening collision are too simple and cannot reduce the occurrence of collisions. Summary of the invention

[0005] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a car door opening warning control method and system, which can issue warnings in multiple ways after detecting the risk of collision, thereby improving the effect of the warning and designing multiple operating measures to reduce the collision risk when opening the door.

[0006] In order to achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a car door opening warning control method, including collecting the movement information of objects around the vehicle through sensors and judging the door opening collision risk level based on the movement information of objects around the vehicle, and using corresponding warning methods to perform door opening warning based on the door opening collision risk level.

[0007] Based on the door opening collision risk level, the corresponding warning method is used to warn the door opening, and the door opening is restricted according to the door opening warning level.

[0008] According to the collision risk level, the corresponding level of warning is issued by adjusting the lighting status of the indicator light and / or the volume of the prompt sound.

[0009] The warning method includes using one or more warning methods including lighting, sound, vibration, projection, and head-up display to send door opening warning information to the occupants in the vehicle.

[0010] Restricting the opening of the door according to the door warning level includes: when it is judged that the current door opening collision risk level is greater than the set threshold, the door is locked through the automatic door locking function to prohibit the door from opening.

[0011] Restricting the opening of the vehicle doors also includes: controlling whether the vehicle doors enter the segmented opening mode according to the collision risk level, and when in the segmented opening mode, controlling the vehicle doors to open in segments in sequence.

[0012] In the segmented opening mode, a first limit position is set. When the door is opened, the door must first pass through the first limit position before it can be opened to the fully open position.

[0013] A first limit position unlocking module is provided, which is automatically or manually unlocked after reaching the first limit position. After the unlocking module is unlocked, the door is allowed to continue opening, otherwise the door opening is restricted to the first limit position.

[0014] The first limit position is configured to be within 30% of the full opening of the door.

[0015] Before the vehicle door opens to the first limit position, resistance is limited on the vehicle door to slow down the door opening speed.

[0016] The advantages of the present invention are: after detecting the risk of collision, early warning is issued in a variety of ways to improve the effect of early warning, and a variety of operational measures are designed to reduce the risk of collision when opening the door. Effective prevention of "door opening" accidents: by timely detecting objects around the vehicle and issuing early warnings, the risk of collision with pedestrians, bicycles, electric vehicles, etc. caused by sudden door opening is greatly reduced, protecting the life and property of all traffic participants on the road. Reduce the risk of side collisions: not only protects vulnerable traffic groups such as pedestrians, but also avoids collisions with vehicles driving next to it when the vehicle opens the door, reducing the possibility of vehicle damage and personal injury. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The following is a brief description of the contents expressed in the drawings of the present invention and the symbols in the drawings:

[0018] Figure 1 The figure is a principle flow chart of the door opening warning method of the present invention. DETAILED DESCRIPTION

[0019] The specific implementation of the present invention will be further explained in detail below by describing the optimal embodiment with reference to the accompanying drawings.

[0020] In this solution, the vehicle-mounted sensor identifies the risk of vehicle collision when the door is opened, and then multiple measures are taken to avoid or reduce the occurrence of collision accidents, thereby reducing the occurrence of door-opening accidents as much as possible, improving vehicle safety, reducing accidents, and improving active safety. The specific solution is as follows:

[0021] A car door opening warning control method includes collecting movement information of objects around the vehicle through a sensor and judging the door opening collision risk level based on the movement information of objects around the vehicle, and using a corresponding warning method to perform door opening warning based on the door opening collision risk level.

[0022] When the vehicle is parked, this solution uses on-board sensors to detect moving objects behind the vehicle, judge the collision risk after the current door is opened, and issue corresponding door opening warnings and protection measures based on the different door opening collision risk levels identified through analysis.

[0023] The vehicle-mounted sensors involved in identifying the collision risk level in this solution include ultrasonic sensors and radar sensors.

[0024] Radar sensor: Usually installed on the side of the vehicle, such as near the door or the rearview mirror. It continuously emits electromagnetic waves and receives the reflected signals. When an object approaches the vehicle, the time and intensity of the reflected signal will change, and the radar can judge the distance, speed and direction of the object based on this.

[0025] Ultrasonic sensor: Generally installed on the side skirts or door edges of the vehicle. It measures the distance between the object and the vehicle by emitting ultrasonic waves and receiving echoes. Ultrasonic sensors have high accuracy in short-distance detection.

[0026] Data processing and analysis determine the collision risk level, and based on the identification, determine whether there is a collision risk and the corresponding collision risk level. Among them:

[0027] Sensor signal processing: The data collected by the sensor is transmitted to the vehicle's electronic control unit (ECU). The ECU filters, amplifies and digitizes the data to remove noise and interference and extract useful information.

[0028] Object recognition and tracking: The ECU uses specific algorithms to identify and track detected objects. Identifying detected objects may include distinguishing different types of objects such as pedestrians, bicycles, motorcycles and other vehicles, and determining their movement trajectories and speed changes.

[0029] Risk assessment: Based on the distance, speed, direction of the object and the vehicle's own status (such as vehicle speed, door status, etc.), the ECU conducts risk assessment and determines the risk level based on the risk assessment. Then, it provides risk warning and real-time protection measures for the door opening action based on the risk level.

[0030] like Figure 1 As shown, this solution uses the ECU to determine that the collision risk is a level one collision risk when the detected surrounding objects move toward the vehicle and the distance is greater than 3m; when it is detected that the surrounding objects move toward the vehicle and the distance is between 1-3m, it is determined that the collision risk is a level two collision risk; when it is detected that the surrounding objects move toward the vehicle and the distance is less than 1m, it is determined that the collision risk is a level three collision risk.

[0031] According to the first, second and third level collision risks, three warning modes of mild warning, severe warning and serious warning are set respectively, and corresponding protection measures are designed according to the levels to minimize the occurrence of door opening collision accidents.

[0032] In this solution, the corresponding warning method is used to warn the door opening based on the door opening collision risk level, and the door opening is restricted according to the door opening warning level.

[0033] In this embodiment, the door opening warning uses the method of adjusting the lighting state of the indicator light and / or the volume of the prompt sound according to the collision risk level to issue a warning of the corresponding level. The warning method includes using one or more warning methods of light, sound, vibration, projection, and head-up display to issue door opening warning information to the occupants in the vehicle.

[0034] The first-level collision risk adopts mild warning measures, the second-level collision risk adopts the second-level warning measures, and the third-level collision risk adopts the third-level warning measures. Among them:

[0035] Mild warning: When an object is detected at a relatively long distance but tends to approach from behind, the dashboard indicator light flashes or a slight warning sound is emitted to alert the occupants. In this solution, the relatively long distance is generally longer than 3m or even 5m. Although the distance is relatively long and tends to approach, it is far enough to give people time to react, thereby reducing the occurrence of collisions.

[0036] Moderate warning: As the object approaches from behind, the warning level increases, the indicator light turns solid and the warning sound becomes louder, prompting the occupants to prepare to open the door and observe further. If the door is not opened after the risk changes from a mild warning and the object continues to approach, a severe warning will be issued when the distance reaches a certain distance, such as less than 3m from the vehicle.

[0037] Severe warning: If the object behind is very close and dangerous, a strong alarm will sound, and you can consider locking the door temporarily to prevent you from opening it rashly. Severe warning is usually when the distance to the vehicle is very close, such as 1m, and there will be a risk of collision if the door is opened. Therefore, a stronger alarm will be used to issue a warning. At the same time, the door can be locked through the automatic locking function, and unlocking the door will be delayed, thereby reducing the occurrence of accidents.

[0038] When the vehicle is parked or stationary, the user's intention to open the door is collected. The user's intention to open the door can be judged through the sensor on the door handle inside the car. When the intention to open the door is detected, the sensor at the rear of the vehicle collects the object at the rear of the vehicle and the moving state of the object, and judges the moving object at the rear of the vehicle and the distance of the object from the rear of the vehicle to judge the collision risk. When the distance from the rear of the vehicle to the rear of the vehicle is greater than 3m, the distance to the door will be greater than 4m or even more, so the risk is low at this time, and so on, 1-3m and within 1m are divided into different risk levels.

[0039] In the case of mild, moderate and medium warning, in addition to warnings issued by indicator lights and alarm sounds, reminders can also be given in a variety of and intuitive ways. The diverse and intuitive prompting methods include: in addition to the existing light and sound warnings, more diverse prompting methods are added, such as seat vibration, steering wheel vibration, head-up display (HUD) projection, etc. These methods can more directly attract the attention of drivers and passengers, especially in noisy environments or when the driver is not paying attention, to ensure that the warning information is effectively conveyed. At the same time, a more intuitive display method is used, such as displaying the position, movement trajectory and relative relationship of the rear object to the door in a graphical and animated form on the central control display or rearview mirror, so that users can see it at a glance.

[0040] At the three warning levels of mild, moderate and severe, visual and auditory warnings are used to warn of collision risks before opening the door, so as to give warnings to people who open the door in the car, so that people in the car can actively pay attention to the collision risks, and encourage people who open the door to actively pay attention to the door opening risks, pay attention to avoidance, and reduce collisions. Among them:

[0041] Visual warning: Instrument panel indicator light: When the system detects a potential risk, the indicator light on the instrument panel will light up to alert the driver. The indicator light may use different colors and flashing patterns to indicate different levels of risk. Rearview mirror warning light: Some vehicles have warning lights on the rearview mirror. When there is danger, the warning light will flash to attract the attention of the driver and passengers.

[0042] Auditory warning: beep or voice prompt: The system will issue a beep or voice prompt to inform the occupants that it is dangerous to open the door. The voice prompt can be more specific about the dangerous situation, such as "Please note that there is a pedestrian approaching on the left."

[0043] According to different risk levels, the volume of the alarm sound in the warning information is adjusted. In the case of mild, moderate and severe warnings, the corresponding warning sounds increase in turn, and the alarm sound is the loudest in the case of severe warnings.

[0044] The alarm sound only serves as a reminder for the person opening the door. The person opening the door is required to actively pay attention to the vehicle when opening the door under the warning sound or reminder information. However, this method relies on the active thinking of the person opening the door. When the person opening the door is distracted or does not notice the warning information, prompt sound, etc. for other reasons, it may still lead to a door-opening collision accident caused by rashly opening the door. Therefore, on the basis of issuing a warning method, this solution is designed with protection measures to achieve passive protection, passively improve the door opening safety when opening the door, and reduce door opening collision accidents.

[0045] The protection measures include preventing door opening, delaying door opening, opening the door in sections and increasing the door opening resistance, so as to reduce the risk of collision caused by faster and larger door opening due to smaller door opening resistance.

[0046] Among them: Prevent door opening: In high-risk situations, the system may automatically prevent the door from opening to prevent a collision.

[0047] Delayed door opening: If the risk is low, the system may suggest delaying the door opening and automatically locking it. Wait until the danger is gone before opening the door. For example, the system displays a countdown on the dashboard to remind the occupants to wait for a while before opening the door, thereby reducing the risk of collision.

[0048] In the case of a collision risk, the door opening is restricted according to the door warning level. The restriction is a protective measure, including: when it is judged that the current door opening collision risk level is greater than the set threshold, the door is locked through the automatic door locking function and the door is prohibited from opening. When it is judged that the collision risk after opening the door is high according to the data collected by the sensor, the door is prohibited from opening and the vehicle is actively kept in a locked state, that is, the vehicle door is kept in a locked state through the automatic locking function to avoid collisions caused by opening the door. After recognizing that the collision risk has decreased, the automatic locking function is released to unlock the door and open the door. At this time, the door is allowed to open, thereby avoiding the door from opening when the collision risk after opening the door is high. When the risk level is divided into mild, moderate and severe levels, when it is judged that the vehicle is in the third level collision risk, the corresponding warning reminder is severe, which means that the collision risk after opening the door is extremely high. Therefore, you should avoid opening the door at this time, and use the automatic locking function or the door lock controller to keep or control the door lock to prevent the door from being opened until the collision level becomes smaller, that is, the third level collision risk becomes the second level collision risk. At this time, the door lock is cancelled, the door lock is unlocked, and the user in the car is allowed to open the door. At this time, the corresponding alarm information is still issued according to the collision warning corresponding to the second level collision risk to remind the user.

[0049] When it is judged that the collision risk at this time is a moderate collision risk, a collision may or may not occur when opening the door at this time. Since the distance to the vehicle at this time is neither close nor far, it is a moderate collision risk. As long as you pay attention to the vehicle behind when opening the door, there will be no collision risk. However, if the user is not careful when opening the door, there will be a collision risk. Therefore, when there is a moderate collision risk, the door opening can be delayed. That is, when it is judged that this time is in the second-level collision risk, it is in the moderate warning correspondingly. In the moderate warning, in order to avoid a collision, the door opening can be delayed at this time. In the moderate warning, the door opening can be delayed by counting down after automatic locking. That is, when in the moderate warning, the door locks are locked and countdown is performed through the car instrument. The door locks are unlocked after the countdown ends, thereby avoiding the collision risk caused by directly opening the door at moderate risk. The system displays a countdown on the instrument panel, prompting people in the car to wait for a while before opening the door, thereby reducing the risk of collision.

[0050] In this embodiment, no matter what door opening collision risk level the vehicle is in, the door opening is designed as a segmented opening mode. The door is opened to the first restricted position before it is allowed to open to the second restricted position, the third restricted position and finally to the fully open position. This segmented door opening method can greatly reduce the risk of collision. Because the vehicle door opening method is the biggest inducement for the risk of door opening collision, if the door is opened slowly, there will generally be no collision. Most of the door opening collision accidents are caused by the user in the car opening the door to a large degree in a short period of time or directly opening the door to the full open. If the door can be restricted to avoid opening the door to the maximum at one time, the risk of door opening collision can be greatly reduced.

[0051] Specifically, whether the door enters the segmented opening mode is controlled according to the collision risk level. When in the segmented opening mode, the door is controlled to open in segments in sequence. Regardless of the risk mode the vehicle is in, the segmented door opening mode is adopted. In the segmented opening mode, a first restricted position is set. When the door is opened, the door must first pass through the first restricted position before it can be opened to the fully open position. A first restricted position unlocking module is set. After reaching the first restricted position, the first restricted position unlocking module is automatically or manually unlocked. After the unlocking module is unlocked, the door is allowed to continue to open, otherwise it is restricted to the door opening to the first restricted position.

[0052] The first limit position is configured to be less than 30% of the full opening of the door. The door is slightly open, which can warn passing vehicles that the door is about to open. In addition, it can also limit the opening of the door for passengers in the car, thereby avoiding the maximum risk of the door being opened instantly. Generally, the first limit position is set between 10%-20% of the full opening of the door. This opening is not large, which can provide a reminder to passing vehicles that the door is about to open, and give prompts to the people in the car, effectively reducing accidents caused by excessive instantaneous door opening.

[0053] The first limit position is a position between the door closing and fully opening. In order to realize the unlocking and control of the door when it is opened to the first limit position, an unlocking module is provided. For electric doors, the door is driven to open by a motor or provided with power assistance by a motor. The motor drives the door to open or provides a power assistance to open the door through a driving mode, so as to realize automatic door opening or provide a power assistance when opening the door manually. The door can be opened with a relatively light force. In this mode, a first limit position is set to limit the door to the first opening position when opening, and the door is allowed to continue to open after reaching the first opening position. At this time, the unlocking module may include a timer and / or a touch sensor, which determines whether the current door opening reaches the first limit position by detecting the position of the motor through in-position detection or the encoder detecting the rotation position of the motor. When the first limit position is reached, the motor controlling the door stops working and the timer starts timing. After timing for a period of time, the motor is resumed. At this time, the door can be temporarily paused at the first limit position for a period of time before continuing to open, thereby avoiding the risk of collision when the door is opened in an instant; the touch sensor starts by the door opening user. When the first limit position is reached, the door motor stops running, and the door cannot be opened any further. The user only needs to manually trigger the touch sensor. When the touch sensor detects the touch signal, the motor controller is used to control the motor to continue opening, thereby achieving the purpose of opening the door in stages.

[0054] In a preferred embodiment of the present solution, before the door opens to the first limit position, the resistance of the door is limited to slow down the door opening speed. Taking an electric door or an electric power-assisted door as an example, before reaching the first limit position, the electric door opens the door slowly at a lower preset opening speed to the first limit position, and then allows the door to open to the full open position, or when the electric power-assisted door is opened, before reaching the first limit position, a small power assist, 0 power assist or reverse power assist is provided to increase the door opening resistance before the door opens to the first limit position, slow down the door opening speed, and thus reduce the risk of collision caused by rapid door opening.

[0055] Through the implementation of the above scheme, the risk of door opening collision can be greatly reduced through early warning reminders and door opening restriction positions, reducing the occurrence of "door opening kill" accidents and improving the active safety performance of the vehicle. This scheme has the following characteristics:

[0056] 1. Improve safety

[0057] 1. Effectively prevent "door opening" accidents: By timely detecting objects around the vehicle and issuing early warnings, the risk of collisions with pedestrians, bicycles, electric vehicles, etc. caused by sudden door opening is greatly reduced, protecting the lives and property of all traffic participants on the road.

[0058] 2. Reduce the risk of side collisions: It not only protects vulnerable traffic groups such as pedestrians, but also prevents the vehicle from colliding with the vehicle next to it when the vehicle door is opened, reducing the possibility of vehicle damage and personal injury.

[0059] 2. Enhance user experience

[0060] 1. Provide intuitive warning information: Whether it is the visual flashing indicator light or the audible beeping or voice prompt, the driver and passengers can quickly and clearly understand the potential dangers of opening the door, making the user feel more at ease during operation.

[0061] 2. Intelligent door control: Automatically prevents the door from opening or suggests delaying door opening in high-risk situations, avoiding accidents caused by user negligence, and also reducing the user's trouble in judging whether it is safe to open the door.

[0062] 3. Wide adaptability

[0063] 1. Applicable to various road conditions: Whether on busy city streets, narrow alleys, or in parking lots and other different scenarios, the system can work and provide users with reliable door opening warnings.

[0064] 2. Wide adaptability: Due to the flexibility of its design, it can be installed on various types of cars to meet the needs of different users.

[0065] Obviously, the specific implementation of the present invention is not limited to the above-mentioned methods. As long as various non-substantial improvements are made using the method concept and technical solution of the present invention, they are all within the protection scope of the present invention.

Claims

1. A car door opening warning control method, characterized in that: It includes collecting the movement information of objects around the vehicle through sensors and judging the risk level of door opening collision based on the movement information of objects around the vehicle, and using corresponding warning methods to issue door opening warnings based on the risk level of door opening collision.

2. A vehicle door opening warning control method as claimed in claim 1, characterized in that: Based on the door opening collision risk level, the corresponding warning method is used to warn the door opening, and the door opening is restricted according to the door opening warning level.

3. A vehicle door opening warning control method as claimed in claim 1 or 2, characterized in that: According to the collision risk level, the corresponding level of warning is issued by adjusting the lighting status of the indicator light and / or the volume of the prompt sound.

4. A vehicle door opening warning control method as claimed in claim 1 or 2, characterized in that: The warning method includes using one or more warning methods including lighting, sound, vibration, projection, and head-up display to send door opening warning information to the occupants in the vehicle.

5. A vehicle door opening warning control method as claimed in claim 1 or 2, characterized in that: Restricting the opening of the door according to the door warning level includes: when it is judged that the current door opening collision risk level is greater than the set threshold, the door is locked through the automatic door locking function to prohibit the door from opening.

6. A vehicle door opening warning control method as claimed in claim 5, characterized in that: Restricting the opening of the vehicle doors also includes: controlling whether the vehicle doors enter the segmented opening mode according to the collision risk level, and when in the segmented opening mode, controlling the vehicle doors to open in segments in sequence.

7. A vehicle door opening warning control method as claimed in claim 6, characterized in that: In the segmented opening mode, a first limit position is set. When the door is opened, the door must first pass through the first limit position before it can be opened to the fully open position.

8. A vehicle door opening warning control method as claimed in claim 7, characterized in that: A first limit position unlocking module is provided, which is automatically or manually unlocked after reaching the first limit position. After the unlocking module is unlocked, the door is allowed to continue opening, otherwise the door opening is restricted to the first limit position.

9. A vehicle door opening warning control method as claimed in any one of claims 6 to 8, characterized in that: The first limit position is configured to be within 30% of the full opening of the door.

10. A vehicle door opening warning control method according to any one of claims 6 to 8, characterized in that: Before the vehicle door opens to the first limit position, resistance is limited on the vehicle door to slow down the door opening speed.

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