Lane change safety light assisted prompting system, method and vehicle

Abstract

This invention belongs to the field of automotive active safety and discloses a lane change safety lighting assistance system, method, and vehicle. The system includes an interactive control system and a light projection system. The interactive control system monitors in real time whether there are other road users passing behind the vehicle on the side of the direction in which the vehicle is about to change lanes. If so, it generates a lane-change prohibition image to remind the driver. The light projection system projects the lane-change prohibition image onto the road surface in front of the vehicle. This invention effectively reminds the driver not to change lanes by monitoring in real time whether there are other road users on the side of the direction in which the vehicle is about to change lanes, and automatically projects a lane-change prohibition image onto the road surface visible to the driver, thereby improving lane change safety.

Description

[0001] This application is a divisional application of Chinese patent application CN202010130541.1, filed on 2020-02-28, entitled "A Lane Change Safety Light Assistance System, Method and Vehicle". Technical Field

[0002] This invention relates to a lane change safety light assist system, method, and vehicle, belonging to the field of automotive active safety. Background Technology

[0003] Traditional car signal lights have warning functions to ensure driving safety, such as indicating the outline, braking reminder, turning reminder, reversing reminder, and fog and severe weather warning. Under normal traffic conditions and weather conditions, they can basically guarantee driving safety.

[0004] Currently, when changing lanes or turning, drivers first activate their turn signals, then visually inspect the direction in which they intend to change lanes or turn for other road users. If other road users are seen, they wait; if no other road users are seen or noticed, they then change lanes or turn. Turning is, in principle, also considered a lane change.

[0005] As is well known, when a vehicle changes lanes, a blind spot exists on the side of the direction from which the vehicle is to change lanes. For example, when changing lanes to the right, as the front of the vehicle tilts to the right, the reflective surfaces of the right-side rearview mirror and the interior rearview mirror gradually tilt from approximately directly behind to facing the left rear. After tilting to a certain angle, the area that was originally directly behind on the right cannot be seen through the rearview mirror, creating a blind spot and making it impossible to promptly spot other road users in that area. If a lane change is performed at this time, there is a safety hazard of colliding with other road users on the side of the direction from which the vehicle is to change lanes.

[0006] Currently, there is no effective technical means to overcome this safety hazard. Summary of the Invention

[0007] The purpose of this invention is to provide a lane change safety light assist prompt system, method and vehicle that monitors in real time whether there are other traffic participants on the side of the direction to be changed. If there are, it automatically projects a lane change prohibition image onto the road surface visible to the driver, so as to effectively prompt the driver not to change lanes and improve lane change safety.

[0008] To achieve the above objectives, the first aspect of the present invention provides a lane change safety light assist prompting system, including an interactive control system and a light projection system; the interactive control system is used to monitor in real time whether there are other traffic participants passing by on the side and rear of the vehicle on the side where the vehicle is about to change lanes, and if so, generates a lane change prohibition image to remind the driver of the vehicle; the light projection system is used to project the lane change prohibition image onto the road surface in front of the vehicle.

[0009] Furthermore, if there are other road users passing behind the vehicle on the side of the direction the vehicle is about to change lanes, the interactive control system also generates a prohibited crossing image for highlighting a section of lane line on the side of the direction the vehicle is about to change lanes, and the light projection system is used to project the prohibited crossing image onto the area where the lane line is located.

[0010] Furthermore, if there are other traffic participants passing behind the vehicle on the side of the direction in which the vehicle is about to change lanes, the interactive control system also generates a roadblock image to form a virtual obstacle, and the light projection system is used to project the roadblock image onto the inside of the lane line on the side of the direction in which the vehicle is about to change lanes.

[0011] Furthermore, the interactive control system includes a sensing unit, an information acquisition unit, an interactive control unit, and an image generation unit; the sensing unit is used to detect other traffic participants to the side and rear of the side of the vehicle where it is about to change lanes in real time; the information acquisition unit is used to acquire the detection information of the sensing unit; the interactive control unit is used to determine whether there are other traffic participants passing to the side and rear of the side of the vehicle where it is about to change lanes based on the detection information; the image generation unit is used to generate the prohibited lane change image, or simultaneously generate the prohibited lane change image and the prohibited crossing image, or simultaneously generate the prohibited lane change image, the prohibited crossing image, and the roadblock image.

[0012] Furthermore, the light projection system includes an image acquisition unit, a light source driving unit, and a projection unit; the image acquisition unit is used to receive the lane change prohibition image, or simultaneously receive the lane change prohibition image and the crossing prohibition image, or simultaneously receive the lane change prohibition image, the crossing prohibition image, and the roadblock image; the light source driving unit is adapted to adjust the driving current of the projection light source according to the lighting mode fed back by the image generation unit; the projection unit is used to project the lane change prohibition image, or simultaneously project the lane change prohibition image and the crossing prohibition image, or simultaneously project the lane change prohibition image, the crossing prohibition image, and the roadblock image.

[0013] Furthermore, it also includes an infrared supplementary lighting unit, which is adapted to provide supplementary lighting to the rear side of the vehicle on the side where it is about to change lanes when the ambient light is dark.

[0014] The second aspect of the present invention provides a lane change safety light assist prompt method, comprising the following steps: (1) determining whether there are other traffic participants passing by on the side rear of the vehicle in the direction of lane change, and if so, proceeding to the next step; (2) generating a lane change prohibition image to remind the driver of the vehicle and projecting it onto the road surface in front of the vehicle.

[0015] Furthermore, in step (2), an image of a lane line that is prohibited from being crossed is simultaneously generated to highlight the lane line on the side of the lane change direction, and then projected onto the area where the lane line is located.

[0016] Furthermore, in step (2), a roadblock image for forming a virtual obstacle is generated and projected onto the inside of the lane line on the side of the direction to be changed.

[0017] A third aspect of the present invention provides a vehicle comprising a lane change safety light assist system as described in any of the technical solutions of the first aspect, and adapted to execute the lane change safety light assist method as described in any of the technical solutions of the second aspect through the lane change safety light assist system.

[0018] The present invention provides a real-time monitoring system to detect whether other road users are passing behind the vehicle on the side of the lane change direction. If so, a lane-change prohibition image is projected onto the road surface in front of the vehicle, prompting the driver not to change lanes from the driver's direct frontal view. To enhance the warning effect, a lane-crossing prohibition image can also be projected in the area of ​​the lane line on the side of the lane change direction, further emphasizing that crossing the lane line is prohibited from the driver's side view. To further enhance the warning effect, a road barrier image can also be projected inside the lane line on the side of the lane change direction, providing a strong visual impact to the driver through virtual obstacles, further warning against lane changes. This significantly improves lane-change safety and effectively avoids collisions.

[0019] Other features and advantages of the embodiments of the present invention will be described in detail in the following detailed description section. Attached Figure Description

[0020] The accompanying drawings are provided to further illustrate embodiments of the present invention and form part of the specification. They are used together with the following detailed description to explain the embodiments of the present invention, but do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of an embodiment of the system of the present invention; Figure 2 This is a schematic diagram of another embodiment of the system of the present invention; Figure 3 This is a schematic diagram illustrating the working principle of an embodiment of the system of the present invention; Figure 4 This is a schematic diagram illustrating the working principle of the projection unit in one embodiment of the system of the present invention; Figure 5 This is a schematic diagram of a lane change prohibition image in one embodiment of the system / method of the present invention. Figure 1 ; Figure 6 This is a schematic diagram of a lane change prohibition image in one embodiment of the system / method of the present invention. Figure 2 ; Figure 7 This is a schematic diagram of a lane change prohibition image in one embodiment of the system / method of the present invention. Figure 3 ; Figure 8 This is a schematic diagram of a lane change prohibition image in one embodiment of the system / method of the present invention. Figure 4 ; Figure 9 This is a schematic diagram of a lane change prohibition image in one embodiment of the system / method of the present invention. Figure 5 ; Figure 10 This is a schematic diagram of a lane change prohibition image in one embodiment of the system / method of the present invention. Figure 6 ; Figure 11 This is a schematic diagram of a lane change prohibition image in one embodiment of the system / method of the present invention. Figure 7 ; Figure 12 This is a schematic diagram of a lane change prohibition image in one embodiment of the system / method of the present invention. Figure 8 ; Figure 13 Projection effect in one embodiment of the system / method of the present invention Figure 1 ; Figure 14 Projection effect in one embodiment of the system / method of the present invention Figure 2 ; Figure 15 This is a flowchart of the first embodiment of the method of the present invention; Figure 16 This is a flowchart of the second embodiment of the method of the present invention; Figure 17 This is a flowchart of the third embodiment of the method of the present invention; Figure 18 This is a flowchart of the fourth embodiment of the method of the present invention.

[0021] Explanation of reference numerals in the attached figures Projection light source 1; First illumination optical element 2; Second illumination optical element 3; Third illumination optical element 4; Digital micromirror 5; Imaging optical system 6; Heat dissipation system 7; No lane change image 8; No crossing image 9; Roadblock image 10; Lane line 11. Detailed Implementation

[0022] The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of the present invention.

[0023] like Figure 1As shown, one embodiment of the lane change safety light assist system of the present invention includes an interactive control system and a light projection system. The interactive control system is used to monitor in real time whether there are other traffic participants passing by on the side and rear of the vehicle in the direction of the lane change. If so, it generates a lane change prohibition image to remind the driver of the vehicle. The light projection system is used to project the lane change prohibition image onto the road surface in front of the vehicle. Specifically, lane change situations mainly include changing lanes to the left adjacent lane when overtaking, changing lanes to the right adjacent lane when overtaking, turning left, and turning right. Especially for roads where pedestrians and vehicles or motor vehicles and non-motorized vehicles share the road, when changing lanes, drivers must pay attention not only to whether there are motor vehicles approaching from the side and rear, but also to whether there are non-motorized vehicles and pedestrians. That is, on complex roads where pedestrians and vehicles intertwine, drivers must constantly observe the road conditions in multiple directions, which can easily lead to mental fatigue and decreased attention. Most importantly, there are blind spots for drivers when changing lanes, making it easy to overlook vehicles or pedestrians that are actually present. In this embodiment, an interactive control system automatically monitors other traffic participants to the side and rear of the vehicle on the side where the vehicle is about to change lanes. This reduces the driver's mental burden from frequent multi-directional checks and effectively compensates for blind spots, allowing for timely detection of other traffic participants to the side and rear of the vehicle on the side where the vehicle is about to change lanes. Once the interactive control system detects other traffic participants, it automatically generates a "no lane change" image to remind the driver not to change lanes. The light projection system projects this image onto the road surface in front of the vehicle, making it easy for the driver to see and immediately suspend the lane change. After other traffic participants have passed, the interactive control system no longer detects them, the "no lane change" image disappears, and the lane change can then proceed, greatly improving lane change safety.

[0024] The lane change prohibition sign includes text and / or graphic elements; the text may include phrases such as "Lane change prohibited," "Left turn prohibited," and "Right turn prohibited," etc. Figure 10-12 As shown, it could also be other text with a similar meaning; the graphic part could include a lane change or turn arrow with a slash, visually indicating that changing the driving direction is not allowed, such as... Figure 5-9 As shown. The text portion is clear and unambiguous, indicating that vehicles are prohibited from changing lanes to ensure the safety of other road users. The graphic portion can flash dynamically and can consist of multiple graphics arranged in a row, giving the driver a strong visual impact.

[0025] The icons in the above graphics can have various display effects such as dynamic fade-in, fade-out, flashing, sliding in and sliding out, which are used to soften the visual senses of drivers and other traffic participants, have a better visual impact, and are easy to attract the attention of the driver of the vehicle.

[0026] like Figure 13As shown, in one embodiment of the lane change safety light assist system of the present invention, if there are other traffic participants passing behind the vehicle on the side of the direction in which the vehicle is about to change lanes, the interactive control system generates a lane change prohibition image 8 and a lane crossing prohibition image 9 to highlight a section of lane line on the side of the direction in which the vehicle is about to change lanes. The light projection system projects the lane crossing prohibition image 9 onto the area where the lane line 11 is located. The specific projection position may coincide with the lane line 11, or be in the adjacent area to its left or right. Figure 13 The image 9, which prohibits crossing, coincides with lane line 11. Figure 13 The diagram illustrates a scenario where the vehicle intends to change lanes or turn to the left. The interactive control system detects other road users crossing to the left rear and automatically generates a "No Lane Change" image (8) and a "No Crossing" image (9). The light projection system projects this image onto the left lane line (11), highlighting the area containing lane line 11. This serves as a side view reminder to the driver that crossing lane line 11 is prohibited. This embodiment provides simultaneous visual impact from both the driver's front and side views, emphasizing the prohibition against lane changes from multiple perspectives, thus further enhancing lane-changing safety.

[0027] like Figure 14 As shown, in one embodiment of the lane change safety light assist system of the present invention, if there are other traffic participants passing behind the vehicle on the side of the direction in which the vehicle is about to change lanes, the interactive control system generates a lane change prohibition image 8 and a roadblock image 10 for forming a virtual obstacle. The light projection system projects the roadblock image 10 onto the inside of the lane line 11 on the side of the direction in which the vehicle is about to change lanes. The specific projection position can be flush with the lane line 11 or at a certain distance from the lane line 11. Figure 13 The image of the roadblock 10 is spaced a certain distance from the lane line 11. Figure 14 The diagram illustrates a scenario where the vehicle intends to change lanes or turn to the left. The interactive control system detects another road user crossing to the left rear and automatically generates a lane-change-prohibition image 8, along with a roadblock image 10. The light projection system projects the roadblock image 10 onto the right side of the left lane line 11. The roadblock image 10 can be represented as a virtual barrier, such as a wall. This gives the driver the impression that there is a roadblock on the left, preventing passage and objectively creating a lane-change-prohibition situation. Subjectively, it also serves as a lateral visual warning to the driver not to cross the roadblock. This embodiment provides simultaneous visual impact from both the driver's frontal and lateral perspectives, emphasizing the prohibition of lane changes from multiple angles, further enhancing lane-change safety.

[0028] Of course, if there are other road users passing behind the vehicle on the side of the direction in which it is about to change lanes, the interactive control system can also generate a lane change prohibition image 8, a crossing prohibition image 9, and a roadblock image 10 at the same time. The light projection system will also project the lane change prohibition image 8, the crossing prohibition image 9, and the roadblock image 10 at the same time, which will more effectively remind the driver not to change lanes blindly and greatly improve lane change safety.

[0029] It should be noted that the "No Lane Change" image 8, "No Crossing" image 9, and "Roadblock" image 10 are all realistically projected onto the road surface and are fixed in relative position to the lane lines 11, just like icons that actually exist on the road surface, rather than virtual effects that float on the road surface or in the air. They have a strong driving experience and visual impact, which will inevitably attract the driver's attention so that they can take timely countermeasures.

[0030] like Figure 2As shown, in one embodiment of the lane change safety light assist system of the present invention, the interactive control system includes a sensing unit, an information acquisition unit, an interactive control unit, and an image generation unit. The sensing unit is used to detect other traffic participants to the side and rear of the vehicle on the side where it is about to change lanes in real time. The information acquisition unit is used to acquire the detection information of the sensing unit. The interactive control unit is used to determine whether there are other traffic participants passing to the side and rear of the vehicle on the side where it is about to change lanes based on the detection information. The image generation unit is used to generate the prohibited lane change image, or simultaneously generate the prohibited lane change image and the prohibited crossing image, or simultaneously generate the prohibited lane change image, the prohibited crossing image, and the obstacle image. Specifically, the sensing unit can be a forward-facing camera module, which can be selected as an infrared camera module. The sensing unit is installed facing the side and rear of both sides of the vehicle body. For example, a wide-angle infrared camera module can be installed at the left and right rearview mirror positions respectively, which can detect other traffic participants within a wider angle range and overcome blind spots. The sensing unit is linked to the turn signal switch or steering wheel. For example, when changing lanes to the left, activating the left turn signal automatically triggers the left-side infrared camera module to detect other road users behind the left. Alternatively, even if the left turn signal is forgotten, turning the steering wheel to the left at a certain angle will also automatically trigger the left-side infrared camera module to detect other road users behind the left. The information acquisition unit collects the detection information from the sensing unit, i.e., whether other road users exist. Simultaneously, it collects the turn signal status information or steering wheel angle information from the ECU (Electronic Control Unit) via the in-vehicle bus, so that the sensing unit and the turn signal or the sensing unit and the steering wheel can be linked. The interactive control unit first determines whether it is in a lane change or turning state based on the information from the information acquisition unit. If so, it further determines whether other road users at the corresponding positions are detected. If detected, the image generation unit generates the lane change prohibition image, or simultaneously generates the lane change prohibition image and the crossing prohibition image, or simultaneously generates the lane change prohibition image, the crossing prohibition image, and the obstacle image.

[0031] like Figure 2As shown, in one embodiment of the lane change safety light assist system of the present invention, the light projection system includes an image acquisition unit, a light source driving unit, and a projection unit; the image acquisition unit is used to receive the lane change prohibition image, or simultaneously receive the lane change prohibition image and the cross-traffic prohibition image, or simultaneously receive the lane change prohibition image, the cross-traffic prohibition image, and the road barrier image, the specific image(s) received depends on the output result of the image generation unit; the light source driving unit is adapted to adjust the driving current of the projection light source according to the lighting mode fed back by the image generation unit; the projection unit is used to project the lane change prohibition image, or simultaneously project the lane change prohibition image and the cross-traffic prohibition image, or simultaneously project the lane change prohibition image, the cross-traffic prohibition image, and the road barrier image, the specific image(s) projected depends on the output result of the image acquisition unit. Specifically, as shown... Figure 4 As shown, the projection unit includes a projection light source 1, a first illumination optical element 2, a second illumination optical element 3, a third illumination optical element 4, a digital micromirror 5, an imaging optical system 6, and a heat dissipation system 7. The dashed lines represent light rays. The light emitted from the projection light source 1 is calibrated sequentially by the first illumination optical element 2, the second illumination optical element 3, and the third illumination optical element 4 before being projected onto the digital micromirror 5. The digital micromirror 5 selectively directs the light rays into the imaging optical system 6 according to the desired image. The imaging optical system 6 outputs the final image light pattern. During operation, the heat dissipation system 7 continuously removes the heat generated by the system, preventing high-temperature operation. Figure 3 As shown, the light source driving unit controls the driving current of the projection light source 1 corresponding to the current lighting mode based on different lighting modes fed back by the image generation unit. Simultaneously, based on the high-speed shutdown signal fed back by the digital micromirror 5 control system, it controls the projection light source 1 to perform a corresponding shutdown action. For example, when the image generation unit feeds back a near-beam lighting mode, the light source driving unit controls the driving current of the projection light source 1 to be 1.4A; when the image generation unit feeds back a high-beam lighting mode, the light source driving unit controls the driving current of the projection light source 1 to be 5A. Figure 3 In the diagram, the thick black lines at the bottom represent the road surface the vehicle is traveling on, the circles represent the wheels, and the lines connecting the wheels represent the vehicle's outline. The diagram shows the sensing range of the sensing unit and the projection area of ​​the projection unit, where the sensing range is the road surface in front of the vehicle, and the projection area is also the road surface in front of the vehicle.

[0032] In some embodiments of the lane change safety lighting assist system of the present invention, the lighting projection system with the projection unit as its core can be installed in the vehicle's headlights or taillights, etc., and can be installed simultaneously in the lights on both sides of the vehicle, or on one side. Of course, the lighting projection system is not limited to being installed in the front and rear lights, and can also be installed in any other location other than where the lights are located. During nighttime driving, the lighting projection system can provide basic nighttime lighting for the vehicle. In addition, the ground or wall in front of the lighting projection system can be used as a screen to project text or patterns. When the lighting projection system is installed in the side mirrors of the vehicle or on both sides of the vehicle, it can further enable interaction between the vehicle and the driver, passengers, or pedestrians during passenger pick-up and drop-off, thereby achieving a richer driving experience.

[0033] like Figure 3 As shown, in one embodiment of the lane change safety light assist system of the present invention, an infrared supplementary light unit is also included. The infrared supplementary light unit is connected to the sensing unit. When the ambient light is relatively dark, such as at night, the infrared supplementary light unit is activated to illuminate the rear side of the vehicle on the side where it is about to change lanes, and then the sensing unit detects it to improve the detection accuracy of other traffic participants.

[0034] To achieve a prominent prompting effect, the images may be displayed in ways including but not limited to the following: 1. Flashing effect; the flashing frequency can be adjusted arbitrarily.

[0035] 2. Variable rhythm flashing effect: The flashing speed and slow frequency can be combined arbitrarily to form a variable rhythm flashing effect. For example, three fast flashes followed by a long period of silence can be used as a display cycle, or three fast flashes followed by three slow flashes can be used as a display cycle.

[0036] 3. Breathing effect / fade-in / fade-out effect: The duration of each of the four phases of a breathing cycle can be adjusted separately, including the time for the icon to gradually appear, the time for the icon to remain lit, the time for the icon to gradually disappear, and the time for the icon to remain off.

[0037] 4. Adaptively change the dynamic frequency. For the various flashing or breathing effects mentioned above, the flashing speed can be adaptively adjusted according to the level of urgency of the warning. For example, a very urgent warning can use a fast flashing frequency, while a warning that is not so urgent can be adaptively adjusted to a slow flashing frequency.

[0038] 5. Flowing water effect: The image gradually appears / disappears in a specified direction.

[0039] 6. Animation effects, such as animation effects of a little person running, and effects of rotating / enlarging / shrinking images.

[0040] 7. Stereoscopic / 3D effect.

[0041] like Figure 15 As shown, one embodiment of the lane change safety light assist prompt method of the present invention includes the following steps: S101 Determine whether there are other traffic participants passing behind the side of the vehicle in the direction of the lane change; if yes, proceed to step S102; if no, repeat this step; S102 Generate a lane change prohibition image to remind the driver of the vehicle and project it onto the road surface in front of the vehicle. The specific implementation process of this method is similar to that disclosed in the above embodiment of the lane change safety light assist prompt system, and will not be repeated here.

[0042] like Figure 16 As shown, in one embodiment of the lane change safety light assist prompt method of the present invention, the method includes the following steps: S201 determining whether there are other traffic participants passing behind the side of the vehicle in the direction of the lane change; if yes, proceeding to steps S202 and S203; if no, repeating this step; S202 generating a lane change prohibition image to remind the driver of the vehicle and projecting it onto the road surface in front of the vehicle; S203 generating a lane line prohibition image to highlight a section of lane line on the side of the direction of the lane change and projecting it onto the area where the lane line is located. The specific implementation process of this method is similar to that disclosed in the above embodiment of the lane change safety light assist prompt system, and will not be repeated here.

[0043] like Figure 17 As shown, in one embodiment of the lane change safety light assist prompting method of the present invention, the method includes the following steps: S301 determining whether there are other traffic participants passing behind the vehicle on the side of the direction in which the vehicle is to change lanes; if yes, proceeding to steps S302 and S303; if no, repeating this step; S302 generating a lane change prohibition image to remind the driver of the vehicle and projecting it onto the road surface in front of the vehicle; S303 generating a road barrier image to form a virtual obstacle and projecting it onto the inside of the lane line on the side of the direction in which the vehicle is to change lanes. The specific implementation process of this method is similar to that disclosed in the above embodiment of the lane change safety light assist prompting system, and will not be repeated here.

[0044] like Figure 18As shown, in one embodiment of the lane change safety light assist prompt method of the present invention, the method includes the following steps: S401 Determine whether there are other traffic participants passing behind the side of the vehicle on the side where the lane change direction is to be changed. If yes, proceed to steps S402, S403, and S404; if no, repeat this step. S402 Generate a lane change prohibition image to remind the driver of the vehicle and project it onto the road surface in front of the vehicle. S403 Generate a lane line prohibition image to highlight a section of lane line on the side where the lane change direction is to be changed and project it onto the area where the lane line is located. S404 Generate a roadblock image to form a virtual obstacle and project it onto the inside of the lane line on the side where the lane change direction is to be changed. The specific implementation process of this method is similar to that disclosed in the above embodiment of the lane change safety light assist prompt system, and will not be repeated here.

[0045] The vehicle embodiments of the present invention may include any of the embodiments of the lane change safety light assist warning system of the present invention described above, and may execute any of the embodiments of the lane change safety light assist warning method of the present invention described above, and have the technical effects or advantages of any of the embodiments described above, which will not be repeated here.

[0046] The optional embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the embodiments of the present invention are not limited to the specific details in the above embodiments. Within the scope of the technical concept of the embodiments of the present invention, various simple modifications can be made to the technical solutions of the embodiments of the present invention, and these simple modifications all fall within the protection scope of the embodiments of the present invention.

[0047] It should also be noted that the various specific technical features described in the above embodiments can be combined in any suitable manner without contradiction. To avoid unnecessary repetition, the embodiments of the present invention will not describe the various possible combinations separately.

[0048] Furthermore, various different implementations of the present invention can be combined arbitrarily, as long as they do not violate the spirit of the present invention, they should also be regarded as the content disclosed in the present invention.

Claims

1. A lane change safety light assist system, characterized in that, It includes an interactive control system and a light projection system; the interactive control system is used to monitor in real time whether there are other traffic participants passing by on the side and rear of the vehicle in the direction of the lane change, and if so, it generates a lane change prohibition image to remind the driver of the vehicle; the light projection system is used to project the lane change prohibition image onto the road surface in front of the vehicle. If there are other road users passing behind the vehicle on the side of the direction the vehicle is about to change lanes, the interactive control system also generates a prohibited crossing image for highlighting a section of lane line on the side of the direction the vehicle is about to change lanes, and the light projection system is used to project the prohibited crossing image onto the area where the lane line is located. The interactive control system includes a sensing unit, an information acquisition unit, an interactive control unit, and an image generation unit; The sensing unit is linked to the turn signal switch or steering wheel to detect other traffic participants to the side and rear of the vehicle on the side where it is about to change lanes. The information acquisition unit is used to acquire the detection information of the sensing unit; The interactive control unit is used to determine, based on the detection information, whether there are other traffic participants passing behind the side of the vehicle in the direction of the lane change; The image generation unit is used to generate the lane change prohibition image and the crossing prohibition image.

2. The lane change safety light assist system according to claim 1, characterized in that, The light projection system includes an image acquisition unit, a light source driving unit, and a projection unit; The image acquisition unit is used to receive the lane change prohibition image and the crossing prohibition image; The light source driving unit is adapted to adjust the driving current of the projection light source according to the illumination mode fed back by the image generation unit. The projection unit is used to project the lane-change prohibition image and the crossing prohibition image.

3. The lane change safety light assist system according to claim 1 or 2, characterized in that, It also includes an infrared supplementary lighting unit, which is adapted to provide supplementary lighting to the rear side of the vehicle on the side where it is about to change lanes when the ambient light is dark.

4. A method for assisting lane change safety lights, characterized in that, Includes the following steps: (1) In response to turning on the turn signal or turning the steering wheel, determine whether there are other traffic participants passing behind the side of the vehicle in the direction of the lane change. If so, continue to the next step. (2) Generate a lane-change prohibition image to remind the driver of the vehicle and project it onto the road surface in front of the vehicle; at the same time, generate a lane-change prohibition image to highlight the lane line on the side of the lane to be changed and project it onto the area where the lane line is located.

5. A vehicle, characterized in that, The system includes the lane change safety light assist system according to any one of claims 1-3, and is adapted to perform the lane change safety light assist method according to claim 4 through the lane change safety light assist system.

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