A control method for a multi-eye vehicle lamp superimposed lighting system

Abstract

The present invention relates to the field of vehicle light control technology, and in particular to a control method for a multi-eye vehicle light superimposed lighting system, wherein the multi-eye vehicle light superimposed lighting system comprises: a vehicle light, which is used to project a light beam according to a control requirement, and the projected light beam comprises a vehicle width indication light band, a lane width indication light band, and a minimum braking distance light band; a sensor, which is used to obtain image information of a road; and a processing module, which is used to analyze the image information of the road, and then generate a control signal according to a preset control rule, and drive the vehicle light to project the light beam through the control signal. The present invention prompts whether the vehicle is passing the current driving lane through the vehicle width indication light band, the lane width indication light band, and the minimum braking distance light band, so as to facilitate novice drivers to make corresponding driving decisions in advance, improve the safety of novice drivers driving, thereby reducing the occurrence of vehicle damage and personal injury, and avoiding a chain reaction, resulting in more serious traffic congestion and safety problems.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle lamp control, and in particular to a control method for a multi-eye vehicle lamp superimposed lighting system. Background Art

[0002] Headlights are a tool for vehicles to illuminate the road at night, and are also a tool for issuing various vehicle driving signals.

[0003] When complex road conditions arise, such as when the through lane is encroached upon, novice drivers, lacking driving experience, face a significant challenge in determining whether their vehicle can safely pass. In these situations, a lack of experience and confidence can lead to confusion and anxiety. This psychological state can slow drivers' reactions and lead to errors in judgment, increasing the risk of accidents, such as scrapes or collisions with other vehicles. These accidents not only cause vehicle damage and injuries, but can also trigger a chain reaction, leading to even more severe traffic congestion and safety issues. Therefore, improvements are necessary. Summary of the Invention

[0004] The purpose of the present invention is to address the deficiencies of the existing technology and provide a control method for a multi-eye headlight superimposed lighting system, which prompts the vehicle whether the current lane can be passed through the vehicle width indication light band, the lane width indication light band and the minimum braking distance light band. When it is judged that the vehicle can pass through, the novice driver is guided to continue driving along the current lane, thereby reducing the judgment time of the novice driver when passing through complex roads; when it is judged that the vehicle cannot pass through, the novice driver is prompted to change lanes or brake in advance, thereby improving the safety of the novice driver's driving, thereby reducing the occurrence of vehicle damage and personal injury, and avoiding triggering a chain reaction that leads to more serious traffic congestion and safety problems.

[0005] To achieve the above-mentioned object, the present invention provides a control method for a multi-headlight superimposed lighting system, wherein the multi-headlight superimposed lighting system comprises:

[0006] Headlights, used to project light beams according to control requirements, including vehicle width indicator light strips, lane width indicator light strips, and minimum braking distance light strips;

[0007] Sensors for acquiring image information of the road;

[0008] A processing module is used to analyze the image information of the road and then generate a control signal according to a preset control rule, and drive the headlight to project a light beam through the control signal;

[0009] The control method further comprises the following steps:

[0010] S1, obtaining image information of the road through sensors;

[0011] S2. Analyze the image information of the road through the processing module, then generate a control signal according to the preset control rules, and drive the vehicle lights to project a light beam through the control signal;

[0012] The preset control rules include:

[0013] Let the vehicle width of the vehicle be W1, and the lane width of the vehicle's travel be W2. Among them, W1 is set according to the characteristics of the actual vehicle type and model, and W2 is obtained after the processing module analyzes the image information on the road;

[0014] When W1 < W2, it is judged that it can pass, and the vehicle lights are controlled to project the vehicle width width indication light band and the lane width width indication light band;

[0015] When W1 ≥ W2, it is judged that it cannot pass, and the current vehicle speed of the vehicle is obtained through the sensor. The minimum braking distance L is evaluated according to the current vehicle speed of the vehicle, and then the corresponding minimum braking distance light band is projected by controlling the vehicle lights according to the value of the minimum braking distance L.

[0016] Preferably, the vehicle lights include a first vehicle light and a second vehicle light respectively arranged at both ends of the vehicle head;

[0017] Both the first vehicle light and the second vehicle light include a light source and a lens integrated lens;

[0018] The light source includes multiple groups of first array lamps, and the multiple groups of first array lamps are arranged along the vehicle width direction;

[0019] The lens integrated lens includes multiple groups of first array lenses, and the multiple groups of first array lenses correspond to the multiple groups of first array lamps one by one;

[0020] The multiple groups of first array lamps respectively project multiple first light screens through the multiple groups of first array lenses. The first light screens are strip-shaped, and the multiple first light screens are arranged in sequence in the vehicle width direction, and a longitudinal warning light band is formed by partial overlap between two first light screens;

[0021] The longitudinal warning light band includes a reference light band and a lane spacing light band. Among them, the two longitudinal warning light bands closest to the vehicle center line are the reference light bands. The reference light band of the first vehicle light and the reference light band of the second vehicle light are combined to form the vehicle width width indication light band, and the width of the vehicle width width indication light band is equal to the vehicle width W1;

[0022] All the light bands in the longitudinal warning light band except the reference light band are lane spacing light bands. The multiple lane spacing light bands of the first vehicle light and the multiple lane spacing light bands of the second vehicle light are combined to form the lane width width indication light band, and the width of the lane width width indication light band is equal to the lane width W2.

[0023] Preferably, each group of first array lamps includes multiple first lamp beads arranged in sequence from high to low;

[0024] Each group of first array lenses includes a plurality of first lenses arranged in descending order;

[0025] Each first lamp bead projects a first light block onto the lane through the corresponding plurality of first lenses;

[0026] The plurality of first light blocks are respectively arranged in sequence in the direction away from the vehicle and irradiate to form a first light curtain.

[0027] Preferably, the plurality of first light blocks of the first light curtain are divided into distant light blocks and near light blocks,

[0028] The preset control rule further includes:

[0029] When W1 < W2 and the value of W2 is blocked by an obstacle and further reduced, after controlling each group of first array lamps to flash for 2 seconds, turn off the first lamp beads corresponding to some distant light blocks to reduce the projection range of some lane spacing light bands, so as to prompt that there is an obstacle in the lane; then, through maintaining the complete lane spacing light band, prompt the actual width of the lane width indication light band after the lane is blocked by the obstacle.

[0030] Preferably, the light source further includes multiple groups of second array lamps, and the multiple groups of second array lamps are arranged along the vehicle height direction;

[0031] The lens integrated lens further includes multiple second array lenses, and the multiple groups of second array lenses correspond to the multiple groups of second array lamps one by one;

[0032] The multiple groups of second array lamps respectively project multiple second light curtains through the multiple groups of second array lenses. The second light curtains are strip-shaped, and the multiple second light curtains are respectively arranged in sequence in the vehicle driving direction and irradiate, and partial overlap between two second light curtains forms a minimum braking distance light band.

[0033] Preferably, the multiple minimum braking distance light bands are respectively projected at the first distance, the second distance, the third distance, the fourth distance and the fifth distance in front of the vehicle. The first distance is L1, the second distance is L2, the third distance is L3, the second distance is L4, and the fifth distance is L5, and L1 < L2 < L3 < L4 < L5;

[0034] When L ≤ L1, control the second array lamps to project the minimum braking distance light band at L1;

[0035] When L1 < L ≤ L2, control the second array lamps to project the minimum braking distance light band at L2;

[0036] When L2 < L ≤ L3, control the second array lamps to project the minimum braking distance light band at L3;

[0037] When L3 < L ≤ L4, control the second array of lamps to project the light band of the minimum braking distance at L4;

[0038] When L4 < L ≤ L5, control the second array of lamps to project the light band of the minimum braking distance at L5;

[0039] When L5 < L, control the second array of lamps to project the light bands of the minimum braking distances at L1, L2, L3, L4, and L5 simultaneously.

[0040] Preferably, the evaluation formula for the minimum braking distance L is:

[0041] L = (k × V , , , , , ,

[0052] ,

[0051] ,

[0050] ,

[0049] ,

[0054] ,

[0053] × T) / (μ × W),

[0042] where k is defined as an adjustment factor, which is a constant determined according to the performance of the vehicle and the braking system, and its value ranges from 0.1 to 1;

[0043] The speed of the vehicle is taken as V, and the unit of the vehicle speed is km / h. The calculation unit of V is m / s, and the integer value of V is taken for calculation;

[0044] The road surface friction coefficient is μ, and the road surface friction coefficient is between 0.1 and 1;

[0045] The vehicle weight is taken as W, and W takes the vehicle weight value of the current vehicle; <00​​​​​​​​​​​​​​​​​​​​​​​​The processing module compares the acquired image information of the driver's face with a preset face database to match the value of an additional factor T;

[0055] The processing module analyzes the image information of the road type to match the value of a preset road surface friction coefficient μ.

[0056] Advantages of the present invention: The present invention uses the vehicle width width indication light band, the lane width width indication light band, and the minimum braking distance light band to prompt whether the current driving lane of the vehicle can pass. When it is judged that it can pass, it guides novice drivers to continue driving along the current driving lane, reducing the judgment time for novice drivers when passing through complex roads; when it is judged that it cannot pass, it prompts novice drivers to change the driving lane in advance or brake in advance, improving the driving safety of novice drivers, thereby reducing the occurrence of vehicle damage and personal injuries, and avoiding triggering a chain reaction, resulting in more serious traffic congestion and safety problems. BRIEF DESCRIPTION OF THE DRAWINGS

[0057] Figure 1 It is a schematic flowchart of the control method for the multi-eye vehicle lamp superimposed lighting system of the present invention.

[0058] Figure 2 It is a schematic structural diagram when W1 < W2, then it is judged that it can pass, and the vehicle lamp is controlled to project the vehicle width width indication light band and the lane width width indication light band.

[0059] Figure 3 It is a schematic structural diagram of the first light curtain.

[0060] Figure 4 It is a schematic structural diagram when W1 < W2 and the value of W2 is further reduced by being blocked by an obstacle, and after controlling the first array of lamps to flash for 2 seconds, some of the first lamp beads corresponding to the distant light blocks are turned off.

[0061] Figure 5 It is a schematic structural diagram of the first array lens and the first array of lamps.

[0062] Figure 6 It is a schematic structural diagram when L5 < L, then the second array of lamps is controlled to project the minimum braking distance light bands at L1, L2, L3, L4, and L5 simultaneously.

[0063] Figure 7 It is a schematic structural diagram of the second array lens and the second array of lamps.

[0064] Reference signs include:

[0065] 1. Headlight; 11. First headlight; 12. Second headlight; 13. Light source; 131. First array lamp; 1311. First lamp bead; 132. Second array lamp; 14. Lens integrated lens; 141. First array lens; 1411. First lens; 1412. First cutting portion; 1413. First condenser; 142. Second array lens; 1421. Second cutting portion; 1422. Second condenser; 15. First light curtain; 151. First light block; 152. Far light block; 153. Near light block; 16. Longitudinal warning light strip; 161. Reference light strip; 162. Lane spacing light strip; 17. Second light curtain; 2. Vehicle width indication light strip; 3. Lane width indication light strip; 4. Minimum braking distance light strip. DETAILED DESCRIPTION

[0066] The present invention is described in detail below with reference to the accompanying drawings.

[0067] like Figures 1 to 5 As shown, a control method of a multi-headlight superimposed lighting system of the present invention, the multi-headlight superimposed lighting system includes:

[0068] The headlight 1 is used to project a light beam according to control requirements. The projected light beam includes a vehicle width indicator light strip 2, a lane width indicator light strip 3 and a minimum braking distance light strip 4.

[0069] Sensors are used to obtain image information of the road.

[0070] The processing module is used to analyze the image information of the road, and then generate a control signal according to a preset control rule, and drive the headlight 1 to project a light beam through the control signal.

[0071] The control method comprises the following steps:

[0072] S1. Obtain road image information through sensors.

[0073] S2. Analyze the image information of the road through the processing module, and then generate a control signal according to a preset control rule, and drive the headlight 1 to project a light beam through the control signal.

[0074] The preset control rules include:

[0075] Assume that the vehicle width is W1 and the lane width is W2, where W1 is set according to the characteristics of the actual vehicle type and model, and W2 is obtained by analyzing the image information on the road by the processing module.

[0076] When W1 < W2, it is determined that it can pass, and the vehicle lamp 1 is controlled to project the vehicle width width indication light band 2 and the lane width width indication light band 3. The vehicle width width indication light band 2 and the lane width width indication light band 3 are used to indicate that the current driving lane of the vehicle can pass, guiding novice drivers to continue driving along the current driving lane and reducing the judgment time of novice drivers when passing through complex roads.

[0077] When W1 ≥ W2, it is determined that it cannot pass, and the current vehicle speed of the vehicle is obtained through a sensor. The minimum braking distance L is evaluated according to the current vehicle speed of the vehicle, and then the vehicle lamp 1 is controlled to project the corresponding minimum braking distance light band 4 according to the value of the minimum braking distance L. The minimum braking distance light band 4 is used to indicate that the current driving lane of the vehicle cannot pass through, facilitating novice drivers to change the driving lane in advance or brake in advance.

[0078] The vehicle width width indication light band 2, the lane width width indication light band 3, and the minimum braking distance light band 4 are used to indicate whether the current driving lane of the vehicle can pass. When it is determined that it can pass, novice drivers are guided to continue driving along the current driving lane, reducing the judgment time of novice drivers when passing through complex roads; when it is determined that it cannot pass, novice drivers are prompted to change the driving lane in advance or brake in advance, improving the driving safety of novice drivers, thereby reducing the occurrence of vehicle damage and personal injuries and avoiding triggering a chain reaction, resulting in more serious traffic congestion and safety problems.

[0079] As Figures 2 to 4 shown, the vehicle lamp 1 of this embodiment includes a first vehicle lamp 11 and a second vehicle lamp 12 respectively arranged at both ends of the vehicle head.

[0080] Both the first vehicle lamp 11 and the second vehicle lamp 12 include a light source 13 and a lens integrated lens 14. Among them, the light source 13 is an LED lamp bead.

[0081] The light source 13 includes multiple groups of first array lamps 131, and the multiple groups of first array lamps 131 are arranged along the vehicle width direction.

[0082] The lens integrated lens 14 includes multiple groups of first array lenses 141, and the multiple groups of first array lenses 141 correspond to the multiple groups of first array lamps 131 one by one.

[0083] The multiple groups of first array lamps 131 respectively project multiple first light screens 15 through the multiple groups of first array lenses 141. The first light screens 15 are strip-shaped, and the multiple first light screens 15 are arranged in sequence in the vehicle width direction, and partial overlap between two first light screens 15 forms a longitudinal warning light band 16.

[0084] The longitudinal warning light strips 16 include a reference light strip 161 and a lane spacing light strip 162. The two longitudinal warning light strips 16 closest to the vehicle's centerline are the reference light strips 161. The reference light strips 161 of the first headlight 11 and the reference light strips 161 of the second headlight 12 combine to form the vehicle width indicator light strip 2. The width of the vehicle width indicator light strip 2 is equal to the vehicle width W1. The vehicle width indicator light strip 2 provides a visual reminder to novice drivers of the vehicle's width.

[0085] Except for the reference light strip 161, all other longitudinal warning light strips 16 are lane spacing light strips 162. The multiple lane spacing light strips 162 of the first headlight 11 and the multiple lane spacing light strips 162 of the second headlight 12 combine to form the lane width indicator light strip 3, whose width is equal to the lane width W2. By simultaneously projecting the vehicle width indicator light strip 2 and the lane width indicator light strip 3 onto the ground, novice drivers are intuitively informed of the vehicle's width and the width of the current lane, helping to reduce confusion and anxiety for novice drivers in complex road conditions. This helps novice drivers better master driving skills and safety knowledge, reducing traffic accidents and congestion caused by misjudgment.

[0086] In this embodiment, each group of the first array lamps 131 includes a plurality of first lamp beads 1311 arranged in descending order.

[0087] Each group of first array lenses 141 includes a plurality of first lenses 1411 arranged in descending order.

[0088] Each first lamp bead 1311 projects a first light block 151 toward the lane through a corresponding plurality of first lenses 1411 .

[0089] The plurality of first light blocks 151 are sequentially arranged in a direction away from the vehicle to form a first light curtain 15 , so that the first light curtain 15 is projected onto the road surface.

[0090] Preferably, first cutting portions 1412 are provided on both sides of each group of first array lenses 141, and the first cutting portions 1412 are used to bring adjacent sides of each group of first array lenses 141 closer to each other, thereby achieving partial overlap between the two first light curtains 15 to form a longitudinal warning light strip 16.

[0091] A first condenser lens 1413 is disposed between the first lamp bead 1311 and the first lens 1411. The light emitted by the first lamp bead 1311 is focused and angled by the first condenser lens 1413, and then projected onto the lane through the first lens 1411 to form a first light curtain 15 and a first light block 151. This not only sharpens the edge contours of the first light curtain 15 and the first light block 151, thereby making the longitudinal warning light strip 16 more visible, but also makes the position of the projected first light curtain 15 more precise, facilitating partial overlap of the two first light curtains 15.

[0092] As shown Figure 4 in the figure, the multiple first light blocks 151 of the first light curtain 15 in this embodiment are divided into distant light blocks 152 and near light blocks 153.

[0093] The preset control rule further includes:

[0094] When W1 < W2 and the value of W2 is blocked by an obstacle and further reduced, after controlling each group of first array lamps 131 to flash for 2 seconds, turn off the first lamp beads 1311 corresponding to some of the distant light blocks 152 to reduce the projection range of some of the lane spacing light bands 162, so as to indicate that there is an obstacle in the lane; then prompt the actual width of the lane width indicating light band 3 after the lane is blocked by the obstacle by maintaining the complete lane spacing light band 162. Realize reminding novice drivers to improve driving concentration and slow down when passing through the section blocked by the obstacle.

[0095] As shown Figure 6-Figure 7 in the figure, the light source 13 in this embodiment further includes multiple groups of second array lamps 132, and the multiple groups of second array lamps 132 are arranged along the vehicle height direction.

[0096] The lens integrated lens 14 further includes multiple second array lenses 142, and the multiple groups of second array lenses 142 correspond to the multiple groups of second array lamps 132 one by one.

[0097] The multiple groups of second array lamps 132 respectively project multiple second light curtains 17 through the multiple groups of second array lenses 142, and the second light curtains 17 are in a strip shape. The multiple second light curtains 17 are respectively arranged and irradiated in sequence along the vehicle driving direction, and partial overlap between two second light curtains 17 forms a minimum braking distance light band 4.

[0098] Preferably, the second array lens 142 is a convex lens, and second cutting parts 1421 are provided at both ends of each group of second array lenses 142. Through the second cutting parts 1421, the adjacent sides of each group of second array lenses 142 are close to each other, and two second array lamps 132 respectively project two partially overlapping second light curtains 17 through the convex lens surfaces on the close sides of the two groups of second array lenses 142, so as to realize partial overlap between two second light curtains 17 to form a minimum braking distance light band 4.

[0099] A second condenser 1422 is provided between the second array lamp 132 and the second array lens 142. The light emitted by the second array lamp 132 is condensed and the angle is adjusted through the second condenser 1422, and then projects the second light curtain 17 forward through the second array lens 142. On the one hand, the edge contour of the second light curtain 17 is clearer, so that the minimum braking distance light band 4 is more obvious. On the other hand, the position where the second light curtain 17 is projected is more accurate, which is convenient for partial overlap of two second light curtains 17.

[0100] In this embodiment, multiple minimum braking distance light bands 4 are respectively projected at the first distance, the second distance, the third distance, the fourth distance, and the fifth distance in front of the vehicle. The first distance is L1, the second distance is L2, the third distance is L3, the second distance is L4, and the fifth distance is L5, where L1 < L2 < L3 < L4 < L5. The specific values of L1, L2, L3, L4, and L5 can be specifically set according to different vehicle models. In this embodiment, L1 is taken as 3 meters, L2 is taken as 5 meters, L3 is taken as 8 meters, L4 is taken as 13 meters, and L5 is taken as 18 meters for illustration.

[0101] When L ≤ L1, the second array of lamps 132 is controlled to project the minimum braking distance light band 4 at L1.

[0102] When L1 < L ≤ L2, the second array of lamps 132 is controlled to project the minimum braking distance light band 4 at L2.

[0103] When L2 < L ≤ L3, the second array of lamps 132 is controlled to project the minimum braking distance light band 4 at L3.

[0104] When L3 < L ≤ L4, the second array of lamps 132 is controlled to project the minimum braking distance light band 4 at L4.

[0105] When L4 < L ≤ L5, the second array of lamps 132 is controlled to project the minimum braking distance light band 4 at L5.

[0106] When L5 < L, the second array of lamps 132 is controlled to project the minimum braking distance light bands 4 at L1, L2, L3, L4, and L5 simultaneously. By projecting the minimum braking distance light bands 4 at different positions, it is to remind novice drivers to change the driving lane in advance or brake in advance. Cultivate the driving skills of novice drivers to anticipate in advance, so as to improve the driving safety of novice drivers.

[0107] The evaluation formula for the minimum braking distance L in this embodiment is:

[0108] L = (k × V 2 × T) / (μ × W),

[0109] where k is a constant, determined according to the performance of the vehicle and the braking system, with a value range of 0.1 - 1. k is defined as an adjustment factor, used to adjust the formula according to the performance of the specific vehicle and the braking system. Different vehicles and braking systems will have different k values. The larger the k value, the worse the braking performance, and the larger the value of the minimum braking distance L. On the contrary, the smaller the k value, the better the braking performance, and the smaller the value of the minimum braking distance L. The k value increases with the increase of the W value.

[0110] The vehicle speed is V, which is expressed in kilometers per hour. V is calculated in meters per second, and is calculated using integer values ​​of V. The greater the vehicle speed, the longer the minimum braking distance L will generally be, because the vehicle requires more time and distance to decelerate to zero.

[0111] The road friction coefficient is μ, which ranges from 0.1 to 1. μ represents the degree of friction between the road surface and the wheels, which affects braking performance. A higher road friction coefficient means better braking performance and a shorter minimum braking distance, L. Conversely, a lower road friction coefficient means worse braking performance and a longer minimum braking distance, L.

[0112] The vehicle weight is W, where W is the current vehicle weight. The heavier the vehicle, the greater the inertia and the longer the minimum braking distance L. Specifically, the vehicle weight can be determined by pre-entering the vehicle's body weight and the excess weight measured by a weight sensor installed on the vehicle. This excess weight includes, but is not limited to, the weight of passengers and onboard items. Alternatively, for convenience, a total weight can be entered, which is the sum of the vehicle's body weight and the maximum load, to directly determine the vehicle weight.

[0113] T is defined as an additional factor, and the value range of T is between 1-5. The additional factor T includes but is not limited to the driver's state. For example, T=1 means that the driver is in good condition, reacts quickly and accurately. The larger the T value, the worse the driver's state, which may include fatigue, distraction or other unfavorable factors. When the T value increases, the calculated braking distance L will also increase accordingly. This is because poor driver condition may cause the driver's reaction time to be prolonged, or inappropriate braking measures to be taken in an emergency, which will require the vehicle to travel a longer distance to stop completely.

[0114] The sensors in this embodiment include a first visual camera, a second visual camera, a millimeter-wave radar, and an infrared sensor.

[0115] The sensor works as follows:

[0116] Image information of the road is acquired through a first visual camera, wherein the image information of the road includes image information of a dividing line of a same-direction lane and a road surface type.

[0117] The image information of the driver's face is obtained through the second vision camera.

[0118] Millimeter-wave radar is used to obtain the location information of vehicles, pedestrians or obstacles on the road.

[0119] Identify vehicles, pedestrians or obstacles on the road through infrared sensors.

[0120] The processing module of this embodiment evaluates the value of the lane width W2 of the vehicle based on the image information of the lane dividing line in the same direction and the position information of the vehicle, pedestrian or obstacle.

[0121] The processing module compares the obtained image information of the driver's face with a preset face database and matches the value of the additional factor T.

[0122] In the preset facial database: when T=1, it means the driver is in good condition with his eyes looking forward; when T=2, it means the driver is slightly distracted, with his head turned more than 20 degrees for more than 2 seconds or lowered for more than 2 seconds; when T=3, it means the driver is moderately distracted, with his head turned more than 35 degrees for more than 3 seconds or lowered for more than 3 seconds; when T=4, it means the driver is severely distracted, with his head turned more than 30 degrees for more than 4 seconds or lowered for more than 4 seconds; when T=5, it means the driver is tired, with his eyes closed or yawning.

[0123] The processing module analyzes the image information of the road surface type and matches it with a preset road friction coefficient μ. Specifically, the road friction coefficient μ is categorized as follows: 0.7-0.9 for dry asphalt, 0.4-0.6 for wet asphalt, 0.3-0.6 for dry gravel, 0.2-0.4 for wet gravel, 0.6-0.8 for dry concrete, 0.4-0.6 for wet concrete, and 0.02-0.1 for icy and snowy roads. The processing module analyzes the image information of the road surface type and matches it to the actual road surface type, making the numerical estimate of the minimum braking distance L more accurate and realistic.

[0124] The above contents are only preferred embodiments of the present invention. For ordinary technicians in this field, according to the concept of the present invention, there may be changes in the specific implementation methods and application scopes. The contents of this specification should not be understood as limiting the present invention.

Claims

1. A control method for a multi-eye vehicle lamp superimposed lighting system, characterized in that: The multi-eye vehicle lamp superimposed lighting system includes: A vehicle lamp (1) for projecting light beams according to control requirements. The projected light beams include a vehicle width indication light band (2), a lane width indication light band (3), and a minimum braking distance light band (4); A sensor for acquiring image information of the road; A processing module for analyzing the image information of the road and then generating a control signal according to a preset control rule, and driving the vehicle lamp (1) to project a light beam through the control signal; The control method further includes the following steps: S1. Acquire the image information of the road through the sensor; S2. Analyze the image information of the road through the processing module, then generate a control signal according to a preset control rule, and drive the vehicle lamp (1) to project a light beam through the control signal; The preset control rule includes: Let the vehicle width of the vehicle be W1 and the lane width in which the vehicle is traveling be W2. Among them, W1 is set according to the characteristics of the category and model of the actual vehicle, and W2 is obtained by analyzing the image information on the road through the processing module; When W1 < W2, it is determined that it can pass, and the vehicle lamp (1) is controlled to project the vehicle width indication light band (2) and the lane width indication light band (3); When W1 ≥ W2, it is determined that it cannot pass, and the current vehicle speed of the vehicle is acquired through the sensor. The minimum braking distance L is evaluated according to the current vehicle speed of the vehicle, and then the vehicle lamp (1) is controlled to project the corresponding minimum braking distance light band (4) according to the value of the minimum braking distance L; The vehicle lamp (1) includes a first vehicle lamp (11) and a second vehicle lamp (12) respectively arranged at both ends of the vehicle head; Both the first vehicle lamp (11) and the second vehicle lamp (12) include a light source (13) and a lens integrated lens (14); The light source (13) includes multiple groups of first array lamps (131), and the multiple groups of first array lamps (131) are arranged along the vehicle width direction; The lens integrated lens (14) includes multiple groups of first array lenses (141), and the multiple groups of first array lenses (141) correspond to the multiple groups of first array lamps (131) one by one; The multiple groups of first array lamps (131) respectively project multiple first light curtains (15) through the multiple groups of first array lenses (141). The first light curtains (15) are strip-shaped, and the multiple first light curtains (15) are arranged in sequence in the vehicle width direction, and a longitudinal warning light band (16) is formed by partial overlap between two first light curtains (15); The longitudinal warning light band (16) includes a reference light band (161) and a lane spacing light band (162). Among them, the two longitudinal warning light bands (16) closest to the vehicle center line are the reference light bands (161). The reference light bands (161) of the first vehicle lamp (11) and the reference light bands (161) of the second vehicle lamp (12) are combined to form the vehicle width indication light band (2), and the width of the vehicle width indication light band (2) is equal to the vehicle width W1; Among the longitudinal warning light strips (16), except for the reference light strip (161), the others are all lane spacing light strips (162). The multiple lane spacing light strips (162) of the first vehicle lamp (11) and the multiple lane spacing light strips (162) of the second vehicle lamp (12) are combined to form a lane width indicating light strip (3), and the width of the lane width indicating light strip (3) is equal to the lane width W2; The light source (13) further includes multiple groups of second array lamps (132), and the multiple groups of second array lamps (132) are arranged along the vehicle height direction; The lens integrated lens (14) further includes multiple second array lenses (142), and the multiple groups of second array lenses (142) correspond to the multiple groups of second array lamps (132) one by one; The multiple groups of second array lamps (132) respectively project multiple second light curtains (17) through the multiple groups of second array lenses (142). The second light curtains (17) are strip-shaped, and the multiple second light curtains (17) are sequentially arranged and irradiated along the vehicle driving direction, and a part of the two second light curtains (17) overlaps to form a minimum braking distance light strip (4).

2. The control method of a multi-eye vehicle lamp superimposed lighting system according to claim 1, characterized in that: Each group of first array lamps (131) includes multiple first lamp beads (1311) arranged from high to low in sequence; Each group of first array lenses (141) includes multiple first lenses (1411) arranged from high to low in sequence; Each of the first lamp beads (1311) projects a first light block (151) onto the lane through the corresponding multiple first lenses (1411); The multiple first light blocks (151) are sequentially arranged and irradiated in the direction away from the vehicle to form a first light curtain (15).

3. The control method of a multi-eye vehicle lamp superimposed lighting system according to claim 2, characterized in that: The multiple first light blocks (151) of the first light curtain (15) are divided into a distant light block (152) and a near light block (153), The preset control rule further includes: When W1 < W2 and the value of W2 is blocked by an obstacle and further reduced, after controlling each group of first array lamps (131) to flash for 2 seconds, turn off the first lamp beads (1311) corresponding to some of the distant light blocks (152) to reduce the projection range of some of the lane spacing light strips (162) and realize the prompt that there is an obstacle in the lane; then, through maintaining the complete lane spacing light strip (162), prompt the actual width of the lane width indicating light strip (3) after the lane is blocked by the obstacle.

4. The control method of a multi-eye vehicle lamp superimposed lighting system according to claim 1, characterized in that: The multiple minimum braking distance light strips (4) are respectively projected at the first distance, the second distance, the third distance, the fourth distance, and the fifth distance in front of the vehicle. The first distance is L1, the second distance is L2, the third distance is L3, the second distance is L4, and the fifth distance is L5, where L1 < L2 < L3 < L4 < L5; When L ≤ L1, then control the second array lamp (132) to project the minimum braking distance light strip (4) at L1; When L1 < L ≤ L2, then control the second array lamp (132) to project the minimum braking distance light strip (4) at L2; When L2 < L ≤ L3, then control the second array lamp (132) to project the minimum braking distance light strip (4) at L3; When L3 < L ≤ L4, then control the second array lamp (132) to project the minimum braking distance light strip (4) at L4; When L4 < L ≤ L5, the second array of lamps (132) is controlled to project the minimum braking distance light band (4) at L5; When L5 < L, the second array of lamps (132) is controlled to project the minimum braking distance light bands (4) at L1, L2, L3, L4, and L5 simultaneously.

5. The control method of a multi-eye vehicle lamp superimposed lighting system according to claim 1, characterized in that: The evaluation formula for the minimum braking distance L is: L = (k × V 2 × T) / (μ × W), where k is defined as the adjustment factor, which is a constant determined according to the performance of the vehicle and the braking system, and its value ranges from 0.1 to 1; The speed of the vehicle is V, and the unit of V is meters per second. The integer value of V is taken for calculation; The road surface friction coefficient is μ, and the road surface friction coefficient ranges from 0.1 to 1; The vehicle weight is W, and the value of W is the vehicle weight of the current vehicle; T is defined as the additional factor, and the value range of T is between 1 and 5.

6. The control method of a multi-eye vehicle lamp superimposed lighting system according to claim 5, characterized in that: The sensor includes a first vision camera, a second vision camera, a millimeter-wave radar, and an infrared sensor; The working mode of the sensor is as follows: The image information of the road is obtained through the first vision camera, where the image information of the road includes the image information of the same-direction lane dividing line and the road surface type; The image information of the driver's face is obtained through the second vision camera; The position information of vehicles, pedestrians, or obstacles on the road is obtained through the millimeter-wave radar; Vehicles, pedestrians, or obstacles on the road are identified through the infrared sensor.

7. The control method of a multi-eye vehicle lamp superimposed lighting system according to claim 6, characterized in that: The processing module respectively evaluates the value of the lane width W2 of the vehicle's travel from the image information of the same-direction lane dividing line, the position information of vehicles, pedestrians, or obstacles; The processing module compares the obtained image information of the driver's face with the preset face database to match the value of the additional factor T; The processing module analyzes the image information of the road type to match the value of the preset road surface friction coefficient μ.

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