CN116749867A - Vehicle turning auxiliary lighting device, control method and automobile - Google Patents
Vehicle turning auxiliary lighting device, control method and automobile Download PDFInfo
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- CN116749867A CN116749867A CN202311062483.3A CN202311062483A CN116749867A CN 116749867 A CN116749867 A CN 116749867A CN 202311062483 A CN202311062483 A CN 202311062483A CN 116749867 A CN116749867 A CN 116749867A
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- 238000000034 method Methods 0.000 title claims abstract description 21
- 238000005286 illumination Methods 0.000 claims abstract description 112
- 238000011217 control strategy Methods 0.000 claims abstract description 44
- 238000006073 displacement reaction Methods 0.000 claims abstract description 20
- 230000002829 reductive effect Effects 0.000 claims description 5
- 230000002441 reversible effect Effects 0.000 claims description 3
- 230000001276 controlling effect Effects 0.000 description 11
- 230000000694 effects Effects 0.000 description 8
- 238000005192 partition Methods 0.000 description 8
- 238000004590 computer program Methods 0.000 description 7
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
- B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
- B60Q1/02—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments
- B60Q1/04—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights
- B60Q1/06—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights adjustable, e.g. remotely-controlled from inside vehicle
- B60Q1/08—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights adjustable, e.g. remotely-controlled from inside vehicle automatically
- B60Q1/12—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights adjustable, e.g. remotely-controlled from inside vehicle automatically due to steering position
- B60Q1/122—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights adjustable, e.g. remotely-controlled from inside vehicle automatically due to steering position with electrical actuating means
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
- B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
- B60Q1/02—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments
- B60Q1/04—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights
- B60Q1/06—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights adjustable, e.g. remotely-controlled from inside vehicle
- B60Q1/08—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights adjustable, e.g. remotely-controlled from inside vehicle automatically
- B60Q1/085—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights adjustable, e.g. remotely-controlled from inside vehicle automatically due to special conditions, e.g. adverse weather, type of road, badly illuminated road signs or potential dangers
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D25/00—Control of light, e.g. intensity, colour or phase
- G05D25/02—Control of light, e.g. intensity, colour or phase characterised by the use of electric means
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Lighting Device Outwards From Vehicle And Optical Signal (AREA)
Abstract
The application discloses a vehicle turning auxiliary lighting device, a control method and an automobile, which belong to the field of intelligent control of an electronic lighting system of an automobile electrical appliance, and comprise the following steps: the auxiliary lighting unit comprises a plurality of LED light sources and a fan-shaped lens module; the image acquisition unit is used for acquiring an external light environment and images in the illumination range of each auxiliary illumination unit, and identifying the images to obtain effective information; the angular displacement identification unit comprises an angle sensor for identifying the rotation angle of the front wheel of the automobile; the LED driving unit is used for driving each LED light source in each auxiliary lighting unit; the MCU micro-control unit is respectively connected with the image acquisition unit, the angular displacement identification unit and the LED driving unit and is used for determining an auxiliary illumination control strategy and driving corresponding LED light sources in corresponding auxiliary illumination units according to the auxiliary illumination control strategy. The auxiliary lighting device is applied to auxiliary lighting when a vehicle turns and flexibly regulates and controls the brightness of the auxiliary lighting.
Description
Technical Field
The application relates to a vehicle turning auxiliary lighting device, a control method and an automobile, and belongs to the field of intelligent control of an electronic lighting system of an automobile.
Background
Driving under poor night light environment, the automotive head lamp is often delayed from the rotation direction of the front wheel of the automobile, for example: the wheels have rotated but the body has not changed significantly. The phenomenon can cause blind areas of vision, and when traveling, pedestrians or obstacles are found, the phenomenon that the vehicle is decelerated or braked often cannot avoid the vehicle, so that unnecessary traffic accidents are most likely to be caused.
At present, when auxiliary illumination is carried out through the turning auxiliary illumination device in the field, but when the turning auxiliary illumination device is used, attention needs to be paid, and opposite traveling vehicles and pedestrians cannot be affected, namely, the sight of people in an auxiliary illumination area needs to be avoided, and the opposite traveling vehicles or pedestrians cannot be enabled to generate glaring feeling. To solve this problem, the prior art proposes to mechanically fix the auxiliary illumination source, and to rotate the reflector by a stepping motor for turning auxiliary illumination. However, the turning auxiliary lighting device has a plurality of problems, such as easy wear and periodical maintenance and repair of the stepping motor after long-term use, untimely influence of the stepping motor, and service life of the stepping motor, and most importantly, the turning auxiliary lighting device cannot avoid traveling and pedestrians in an auxiliary lighting area.
Disclosure of Invention
The application aims to provide a vehicle turning auxiliary lighting device, a control method and an automobile, which can carry out auxiliary lighting when a vehicle turns, and can flexibly regulate and control the brightness of light according to the road surface condition in the influence range of the auxiliary lighting when the auxiliary lighting is carried out.
To achieve the above object, a first aspect of the present application provides a vehicle turning auxiliary lighting device, comprising:
the auxiliary lighting units are used for carrying out auxiliary lighting when the vehicle turns, and each auxiliary lighting unit comprises a plurality of LED light sources and a fan-shaped lens module used for controlling the lighting angle and the lighting area of each LED light source;
the image acquisition unit is used for acquiring an external light environment and images in the illumination range of each auxiliary illumination unit, and identifying the images to obtain effective information, wherein the effective information comprises whether obstacles exist in the illumination range of each auxiliary illumination unit;
the angular displacement identification unit comprises an angle sensor for identifying the rotation angle of the front wheel of the automobile;
the LED driving units are connected with the auxiliary lighting units and are used for driving the LED light sources in the auxiliary lighting units;
the MCU micro-control unit is respectively connected with the image acquisition unit, the angular displacement identification unit and the LED driving unit and is used for determining an auxiliary illumination control strategy according to the external light environment and the effective information acquired by the image acquisition unit and the rotation angle of the front wheel of the automobile acquired by the angular displacement identification unit and controlling the LED driving unit to drive corresponding LED light sources in corresponding auxiliary illumination units according to the auxiliary illumination control strategy, wherein the auxiliary illumination control strategy comprises an LED light source switch control strategy and an LED light source brightness control strategy.
In one embodiment, the vehicle turning auxiliary lighting device includes: a left auxiliary lighting unit for auxiliary lighting when the vehicle turns left and a right auxiliary lighting unit for auxiliary lighting when the vehicle turns right, the left auxiliary lighting unit and the right auxiliary lighting unit being integrated inside a left headlamp assembly and inside a right headlamp assembly of the vehicle, respectively.
In one embodiment, the auxiliary lighting unit comprises: the LED lamp comprises 16 LED light sources and a fan-shaped lens module, wherein the fan-shaped lens module comprises 16 subareas, the angle of each subarea is 4 degrees, and the positions of the subareas respectively correspond to the positions of the LED light sources.
In one embodiment, the auxiliary lighting unit has an illumination range of 64-degree fan-shaped illumination area and an effective illumination radius of 25 meters.
In one embodiment, the image acquisition unit includes: the two cameras are integrated with photoresistors, are respectively used for acquiring images in the illumination range of the left auxiliary illumination unit and images in the illumination range of the right auxiliary illumination unit, and are both arranged at the position of a vehicle recorder of the vehicle.
In one embodiment, the MCU micro-control unit is specifically configured to: when the vehicle is detected to be in a non-reverse gear state and a low beam or a high beam is started, determining an LED light source switch control strategy according to the external light environment acquired by the image acquisition unit and the front wheel rotation angle of the automobile acquired by the angular displacement identification unit;
the LED light source switch control strategy comprises the following steps: judging whether the external light environment acquired by the image acquisition unit is smaller than a preset value and whether the rotation angle of the front wheels of the automobile is larger than the preset value, if so, judging that the automobile needs auxiliary illumination, and controlling the LED driving unit to drive the corresponding LED light source in the auxiliary illumination unit according to the rotation angle of the front wheels of the automobile so that the auxiliary illumination unit projects a fan-shaped illumination area to the corresponding angle of the turning direction of the automobile.
In one embodiment, the MCU is further configured to determine, after determining that the vehicle needs auxiliary illumination, a light-to-dark control strategy of the LED light source according to the external light environment acquired by the image acquisition unit;
the LED light source brightness control strategy comprises the following steps: and controlling the LED driving unit to drive each LED light source in the auxiliary lighting unit with preset power according to the numerical value of the external light environment.
In one embodiment, the MCU is further configured to determine, after determining that the vehicle needs auxiliary illumination, a light-to-dark control strategy of the LED light source according to the effective information acquired by the image acquisition unit;
the LED light source brightness control strategy comprises the following steps: judging whether an obstacle exists in the illumination range of the auxiliary illumination unit according to the effective information, if so, identifying the type of the obstacle, and adjusting the brightness of the corresponding LED light source in the auxiliary illumination unit according to the type of the obstacle, so that the auxiliary illumination unit projects a flawed sector illumination area to the corresponding angle of the turning direction of the vehicle;
the types of the obstacles comprise driving, pedestrians and other obstacles, when the obstacle is identified as the driving or the pedestrian, the brightness of each LED light source corresponding to the obstacle angle in the auxiliary lighting unit is reduced, and when the obstacle is identified as the other obstacle, the brightness of each LED light source corresponding to the obstacle angle in the auxiliary lighting unit is improved.
A second aspect of the present application provides a control method applied to the vehicle turning auxiliary lighting device according to the first aspect of the present application or any one of the embodiments of the first aspect of the present application, including:
s100, judging whether a vehicle has started a dipped headlight or a high beam, if so, executing a step S200;
s200, detecting an external light environment through the image acquisition unit and sending the external light environment to the MCU micro-control unit;
s300, detecting the rotation angle of the front wheel of the automobile through the angular displacement identification unit, and sending the rotation angle of the front wheel of the automobile to the MCU;
s400, judging whether auxiliary illumination is carried out or not through the MCU micro-control unit according to the external light environment and the rotation angle of the front wheels of the automobile, if yes, executing a step S500, otherwise, returning to the step S100;
s500, detecting effective information through the image acquisition unit, sending the effective information to the MCU micro-control unit, and determining an auxiliary lighting control strategy through the MCU micro-control unit according to the external light environment, the effective information and the rotation angle of the front wheels of the automobile;
s600, driving the corresponding LED light sources in the corresponding auxiliary lighting units through the LED driving units according to the auxiliary lighting control strategy, and carrying out auxiliary lighting on the turning direction of the vehicle.
A third aspect of the present application provides an automobile comprising: the vehicle turning auxiliary lighting device according to the first aspect of the application or any one of the embodiments of the first aspect of the application.
From the above, the application provides a vehicle turning auxiliary lighting device, a control method and an automobile, wherein when a vehicle turning is detected, the vehicle turning auxiliary lighting device can flexibly regulate and control the brightness of a road surface within the irradiation range of an auxiliary lighting unit according to a control command output by an MCU micro-control unit, and the effect of avoiding influencing opposite driving or pedestrian vision is realized while auxiliary lighting is provided. In addition, the MCU micro-control unit and the LED driving unit are used for controlling the auxiliary lighting unit, so that the control precision is high, the reaction speed is high, the stability is good, a stepping motor is not required to be arranged, and the service life of the device is greatly prolonged.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments or the description of the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a block diagram of a turning auxiliary lighting device for a vehicle according to an embodiment of the present application;
fig. 2 is a schematic structural diagram of an auxiliary lighting unit according to an embodiment of the present application;
FIG. 3 is a schematic view of an auxiliary lighting unit for a right-hand turn of a vehicle with no driving on the opposite side;
FIG. 4 is a schematic illumination diagram of an auxiliary illumination unit for a right-hand turn of a vehicle and a traveling opposite thereto according to an embodiment of the present application;
fig. 5 is a schematic illumination diagram of an auxiliary illumination unit when a vehicle is traveling in a curve and no traveling is performed on the surface, which is provided by the embodiment of the application;
fig. 6 is a schematic illumination diagram of an auxiliary illumination unit when a vehicle is traveling on a curve and is traveling opposite to the curve according to an embodiment of the present application;
FIG. 7 is a flowchart of a control method according to an embodiment of the present application;
in the figure: 010-sector lens module; 020-LED light source; a-vehicle low beam/high beam illumination area; b-the vehicle turning auxiliary lighting unit irradiates the area; c-driving/pedestrian area.
Detailed Description
In the following description, for purposes of explanation and not limitation, specific details are set forth such as the particular system architecture, techniques, etc., in order to provide a thorough understanding of the embodiments of the present application. It will be apparent, however, to one skilled in the art that the present application may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present application with unnecessary detail.
It should be understood that the terms "comprises" and/or "comprising," when used in this specification and the appended claims, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
It is also to be understood that the terminology used in the description of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in this specification and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application, but the present application may be practiced in other ways other than those described herein, and persons skilled in the art will readily appreciate that the present application is not limited to the specific embodiments disclosed below.
Example 1
The embodiment of the application provides a vehicle turning auxiliary lighting device, as shown in fig. 1, which comprises:
the auxiliary lighting units are used for auxiliary lighting when the vehicle turns, and each auxiliary lighting unit comprises a plurality of LED light sources (also called LED lamp beads) and a fan-shaped lens module used for controlling the lighting angle and lighting area of each LED light source;
the image acquisition unit is used for acquiring an external light environment and images in the illumination range of each auxiliary illumination unit, and identifying the images to obtain effective information, wherein the effective information comprises whether obstacles exist in the illumination range of each auxiliary illumination unit;
the angular displacement identification unit comprises an angle sensor for identifying the rotation angle of the front wheel of the automobile;
the LED driving units are connected with the auxiliary lighting units and are used for driving the LED light sources in the auxiliary lighting units;
the MCU micro-control unit is respectively connected with the image acquisition unit, the angular displacement identification unit and the LED driving unit and is used for determining an auxiliary illumination control strategy according to the external light environment and the effective information acquired by the image acquisition unit and the rotation angle of the front wheel of the automobile acquired by the angular displacement identification unit and controlling the LED driving unit to drive corresponding LED light sources in corresponding auxiliary illumination units according to the auxiliary illumination control strategy, wherein the auxiliary illumination control strategy comprises an LED light source switch control strategy and an LED light source brightness control strategy.
Optionally, the vehicle turning auxiliary lighting device includes: a left auxiliary lighting unit for auxiliary lighting when the vehicle turns left and a right auxiliary lighting unit for auxiliary lighting when the vehicle turns right, the left auxiliary lighting unit automatically responding when the vehicle turns left, the right auxiliary lighting unit automatically responding when the vehicle turns right. In one embodiment, the left auxiliary lighting unit and the right auxiliary lighting unit are integrated within a left headlamp assembly and a right headlamp assembly of the vehicle, respectively.
Optionally, as shown in fig. 2, the auxiliary lighting unit includes: 16 LED light sources 020 and a fan-shaped lens module 010 with a certain angle, wherein the fan-shaped lens module 010 comprises 16 subareas, the angle of each subarea is 4 degrees, and the positions of the subareas respectively correspond to the positions of the LED light sources 020. Alternatively, other numbers of LED light sources 020 and the corresponding zoned fan lens modules 010 may be provided according to the vehicle model and actual requirements, which is not limited herein.
In one embodiment, when the auxiliary lighting unit includes 16 LED light sources 020, the illumination range is a sector-shaped illumination area of 64 degrees at maximum, and the effective illumination radius is 25 meters. In order to accurately control the illumination angle and the regional illumination, the LED lens module (namely the sector lens module 010) with 16 regions is matched, so that the illumination ranges of various different light type angles are output in the sector illumination area with the maximum of 64 degrees by controlling the on and off of different LED light sources 020, and the follow-up driving/pedestrian avoidance effect similar to the ADB function is realized according to different auxiliary illumination control strategies.
Optionally, the image acquisition unit includes: the two cameras integrated with the photoresistors are respectively used for acquiring images in the illumination range of the left auxiliary illumination unit and images in the illumination range of the right auxiliary illumination unit, and the two cameras are arranged at the position of a vehicle recorder of a vehicle or can be arranged at other positions, and the position is not limited.
In one embodiment, two cameras respectively detect images in the angles of 10-74 degrees of left and right of the vehicle, judge whether an obstacle exists in the illumination range of the auxiliary illumination unit and whether the obstacle is a driving obstacle, a pedestrian obstacle or other obstacles through image comparison and image processing technologies, and feed the obtained effective information back to the MCU micro-control unit to provide basic data for the main control MCU micro-control unit so that the MCU micro-control unit can output accurate control instructions to control light of the auxiliary illumination unit.
Optionally, the angular displacement identification unit is installed on the steering wheel rotating shaft, identifies the rotating angle of the front wheel of the automobile by detecting the steering wheel rotating angle and converting, and feeds back the obtained rotating angle of the front wheel of the automobile to the MCU micro-control unit.
In an embodiment, the angular displacement identification unit may further include a detection module, configured to detect a driving speed and a driving parameter of the vehicle, such as whether a dipped headlight or a high beam is turned on, and feed back the obtained driving parameter of the vehicle to the MCU.
Optionally, the LED driving unit, that is, the LED driving circuit, may be implemented by using a driver chip TLD7002-16ES dedicated to automotive LEDs, where the chip may drive 16-channel LED light sources, each channel of LED light source may implement a dimming control precision from 0 milliamp (mA) to 76.5mA, and the control of each channel is not affected by each other. The chip has high control precision, a large number of single-chip driving channels, high influence speed, support of LIN/CAN communication protocol, and built-in CAN bus transceiver, reduces the cost of peripheral electronic components and reduces development difficulty.
In one embodiment, when the turning auxiliary lighting device comprises a left auxiliary lighting unit and a right auxiliary lighting unit, the LED driving circuit comprises a left turning LED driving circuit and a right turning LED driving circuit, and at this time, the LED driving circuit comprises 2 (pcs) special driving chips TLD7002-16ES for the vehicle standard class LEDs, which respectively control the left auxiliary lighting unit and the right auxiliary lighting unit, and each group of auxiliary lighting units further comprises 16 channels of LED light sources. All driving chips TLD7002-16ES special for 2pcs vehicle-standard LEDs are connected to a CAN bus, so that a CAN bus control mode is realized.
Optionally, the MCU micro-control unit adopts SAK-TC222L-16F133F AC, the chip meets the vehicle-standard level requirements, and the multi-core architecture is based on up to three independent 32-bit TriCore CPUs, so that extremely high safety standards are met, and meanwhile, the performance is greatly improved. The LIN/CAN bus communication protocol is supported, and the rapid development of products CAN be performed based on development tools.
Optionally, the MCU micro-control unit is specifically configured to: when the vehicle is detected to be in a non-reverse gear state and a low beam or a high beam is started, determining an LED light source switch control strategy according to the external light environment acquired by the image acquisition unit and the front wheel rotation angle of the automobile acquired by the angular displacement identification unit;
the LED light source switch control strategy comprises the following steps: judging whether the external light environment acquired by the image acquisition unit is smaller than a preset value and whether the rotation angle of the front wheel of the automobile is larger than the preset value, if so, judging that the automobile needs auxiliary illumination, and controlling the LED driving unit to drive the corresponding LED light source 020 in the auxiliary illumination unit according to the rotation angle of the front wheel of the automobile, so that the auxiliary illumination unit projects a fan-shaped illumination area to the corresponding angle of the turning direction of the automobile, wherein when the fan-shaped lens module 010 comprises 16 subareas and the angle of each subarea is 4 degrees, the projection angle of the fan-shaped illumination area is 64 degrees at most.
In one embodiment, the angular displacement recognition unit determines whether there is a left-turn or right-turn behavior of the vehicle by:
if the left-turning or right-turning offset angle delta phi of the front wheels of the vehicle is identified to be less than or equal to 10 degrees, the turning angle of the vehicle is judged to be smaller, and the value of the turning angle is fed back to the MCU micro-control unit: 0x00. The safety hidden trouble existing in the running of the vehicle at the curve is small, and the function of turning auxiliary lighting units of the vehicle is not required to be started;
if the left-turning or right-turning offset angle delta phi of the front wheels of the vehicle is identified to be more than 10 degrees, the turning angle of the vehicle is determined to be larger, and the value of the MCU is fed back to the value of the MCU: 0xff. The method indicates that potential safety hazards exist in the running or turning of the vehicle curve in the moment, and the function of the auxiliary lighting unit of the vehicle curve needs to be started; it should be noted that the actual area (angle) illuminated by the vehicle curve auxiliary lighting unit is related to the vehicle front wheel offset angle.
Further, when the vehicle front wheel turns left or right by an offset angle ΔΦ >10 ° and the external light environment E is less than or equal to 50 lux (lx), the LED light sources 020 of the corresponding partitions in the auxiliary lighting unit are controlled to be turned on or off according to the steering wheel angle, specifically, the steering angle of most of the front wheels is 45 ° when the steering wheel is in a dead state, the condition that the steering deviation of the front wheels is within ±10° is not considered, the steering angle of the front wheels is 45 ° -10 ° =35° in a range to be considered, and the corresponding vehicle turning auxiliary unit irradiates an angle of 64 °, namely 16 partitions, so that the output light type angle of the vehicle turning auxiliary lighting unit is correspondingly increased or decreased by 1 partition when the front wheels of the vehicle are changed by 35 ° +.16+.2.19 °. When the output light type angle is increased by 1 partition, the LED light sources 020 of the corresponding partition are controlled to be turned on, and when the output light type angle is decreased by 1 partition, the LED light sources 020 of the corresponding partition are controlled to be turned off.
In one embodiment, if the external light environment (road illuminance) E >50lx, the value is fed back to the MCU micro control unit: 0x03. The ambient light environment is good, and additional turning auxiliary light supplementing is not needed, namely: the auxiliary lighting unit is not required to be started; if the external light environment E is less than or equal to 50lx, the ambient light environment is insufficient, and additional turning auxiliary light supplementing is needed.
Optionally, the MCU is further configured to determine, after determining that the vehicle needs auxiliary illumination, a control policy of light and dark of the LED light source according to the external light environment acquired by the image acquisition unit;
the LED light source brightness control strategy comprises the following steps: and controlling the LED driving unit to drive each LED light source in the auxiliary lighting unit with preset power according to the numerical value of the external light environment.
In one embodiment, if the ambient light environment E <25lx (reference road illumination standard: average illuminance E >20lx on expressway), the value is fed back to MCU micro control unit: 0x01. Indicating that the ambient light environment is dim, some channels in the LED driving circuit drive the corresponding LED light sources 020 to output 100% power; if the external light environment E epsilon [25lx,50lx ], feeding back to the MCU micro control unit value: 0x02. Indicating that the ambient light environment is not good, some channels drive the corresponding LED light sources 020 to 50% output.
Optionally, the MCU is further configured to determine, after determining that the vehicle needs auxiliary illumination, a control policy of light and dark of the LED light source according to the effective information acquired by the image acquisition unit;
the LED light source brightness control strategy comprises the following steps: judging whether an obstacle exists in the illumination range of the auxiliary illumination unit according to the effective information, if so, identifying the type of the obstacle, and adjusting the brightness of the corresponding LED light source 020 in the auxiliary illumination unit according to the type of the obstacle, so that the auxiliary illumination unit projects a flawed sector illumination area to the corresponding angle of the turning direction of the vehicle;
wherein, the types of the obstacle include driving, pedestrian and other obstacles, when the obstacle is identified as driving or pedestrian, the brightness of each LED light source 020 corresponding to the obstacle angle in the auxiliary lighting unit is reduced, and when the obstacle is identified as other obstacle, the brightness of each LED light source 020 corresponding to the obstacle angle in the auxiliary lighting unit is improved.
In one embodiment, if no traffic, pedestrian, or other obstacle is detected within the illumination range of the vehicle auxiliary illumination system and the other vehicle auxiliary illumination unit on condition is satisfied, a 64 ° fan-shaped illumination area is projected toward the vehicle turning direction. If it is detected that there are traveling and pedestrians in the irradiation range of the auxiliary lighting unit and the starting condition of the auxiliary lighting unit of other vehicles is satisfied, the incomplete sector irradiation area is projected to the turning direction of the vehicle, namely: the power of the LED light source 020 in the area which affects the driving and the pedestrian is reduced to 20 percent. And the turning auxiliary lighting device adjusts the on-off and the bright and dark states of 16 LED light sources 020 in the fan-shaped lighting area in real time according to the real-time turning condition of the vehicle and the relative positions (angles) of the traveling vehicle and the traveling vehicle, thereby achieving the effective avoiding effect and being similar to the ADB function. When other static obstacles (non-people) exist in the irradiation range of the auxiliary lighting unit and the starting condition of the auxiliary lighting unit of the other vehicle is met, the LED light source 020 is highlighted and irradiated on the partition obstacle with 100% power output, so that a reminding effect is achieved. Fig. 3, fig. 4, fig. 5, and fig. 6 are schematic diagrams of avoiding effects when no traffic, no pedestrian, and no traffic or no pedestrian exist during a vehicle turning, wherein, a vehicle dipped headlight/high beam irradiates a region a, and a vehicle turning auxiliary illuminating unit irradiates a region B, and when a traffic/pedestrian is detected in the illuminating region, the brightness of the LED light source 020 corresponding to the angle of the traffic/pedestrian region C is reduced, so as to realize zone avoiding of the traffic/pedestrian.
Further, the LED light source brightness control strategy is determined according to the driving speed. Specifically, the traveling speed has a certain relationship with the irradiation area (angle) of the auxiliary illumination unit. When the vehicle is traveling fast, the auxiliary irradiation area (angle) is required to be smaller than that in the case of low-speed traveling. The auxiliary irradiation area (angle) to the vehicle tends to be maximum when the vehicle is in a stationary state.
In one embodiment, when the driving speed V is less than or equal to 30 kilometers per hour (km/h), the auxiliary lighting unit outputs light to illuminate the subarea of which the maximum angle is less than 1 subarea part; conversely, when the driving speed V is more than 30km/h, the subarea of which the maximum angle of the output light type of the vehicle turning auxiliary lighting system is less than 1 can be turned off or dimmed.
Optionally, the MCU may set the light and dark control strategies of the LED light sources according to the external light environment, the effective information, and the vehicle running speed, and may comprehensively consider any one or a combination of three factors including the external light environment, the effective information, and the vehicle running speed to determine the light and dark control strategies of the LED light sources, which is not limited herein. Finally, the MCU micro-control unit sends out corresponding control instructions according to the auxiliary lighting control strategy to drive some LED light source points in the LED matrix to emit light (including adjusting brightness), so that the aim of auxiliary lighting for turning of the vehicle is fulfilled.
Optionally, the MCU is connected to the vehicle overall system through a CAN bus, and CAN turn on or off the vehicle turning auxiliary lighting device function through a key/knob.
From the above, the embodiment of the application provides the vehicle turning auxiliary lighting device, which can flexibly regulate and control the brightness of the road surface within the irradiation range of the auxiliary lighting unit according to the control command output by the MCU micro-control unit when the vehicle turning is detected, and can provide auxiliary lighting while avoiding influencing the sight of the opposite traveling or pedestrians so as to realize the avoidance effect. In addition, the MCU micro-control unit and the LED driving unit are used for controlling the auxiliary lighting unit, so that the control precision is high, the reaction speed is high, the stability is good, a stepping motor is not required to be arranged, and the service life of the device is greatly prolonged.
Example two
An embodiment of the present application provides a control method applied to the vehicle turning auxiliary lighting device according to any one of the first embodiment, as shown in fig. 7, including:
s100, judging whether a vehicle has started a dipped headlight or a high beam, if so, executing a step S200;
s200, detecting an external light environment through the image acquisition unit and sending the external light environment to the MCU micro-control unit;
s300, detecting the rotation angle of the front wheel of the automobile through the angular displacement identification unit, and sending the rotation angle of the front wheel of the automobile to the MCU;
s400, judging whether auxiliary illumination is carried out or not through the MCU micro-control unit according to the external light environment and the rotation angle of the front wheels of the automobile, if yes, executing a step S500, otherwise, returning to the step S100;
s500, detecting effective information through the image acquisition unit, sending the effective information to the MCU micro-control unit, and determining an auxiliary lighting control strategy through the MCU micro-control unit according to the external light environment, the effective information and the rotation angle of the front wheels of the automobile;
s600, driving the corresponding LED light sources in the corresponding auxiliary lighting units through the LED driving units according to the auxiliary lighting control strategy, and carrying out auxiliary lighting on the turning direction of the vehicle.
Optionally, the control manner further includes: prior to step S100, the vehicle turn assist lighting function is turned on by a key/knob.
Optionally, the control manner further includes: after step S600, the process returns to step S100.
Therefore, according to the control method provided by the embodiment of the application, when the vehicle turns, the road surface brightness in the irradiation range of the auxiliary lighting unit can be flexibly regulated and controlled according to the control command output by the MCU micro-control unit, the auxiliary lighting is provided, the influence on the sight of the opposite traveling crane or pedestrian is avoided, and the avoidance effect is realized.
Example III
The embodiment of the application also provides an automobile, which comprises the vehicle turning auxiliary lighting device according to any one of the first embodiment.
From the above, the embodiment of the application provides an automobile, which is provided with an auxiliary lighting device for turning a vehicle, and can flexibly regulate and control the brightness of a road surface within the irradiation range of an auxiliary lighting unit according to the output control command of an MCU micro-control unit when the turning of the vehicle is detected, so that the auxiliary lighting is provided, and meanwhile, the influence on the sight of an opposite traveling vehicle or a pedestrian is avoided, and the avoiding effect is realized.
It should be appreciated that the above-described integrated modules/units, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored in a computer-readable storage medium. Based on such understanding, the present application may implement all or part of the flow of the method of the above embodiment, or may be implemented by instructing related hardware by a computer program, where the computer program may be stored in a computer readable storage medium, and the computer program may implement the steps of each of the method embodiments described above when executed by a processor. The computer program comprises computer program code, and the computer program code can be in a source code form, an object code form, an executable file or some intermediate form and the like. The computer readable medium may include: any entity or device capable of carrying the computer program code described above, a recording medium, a U disk, a removable hard disk, a magnetic disk, an optical disk, a computer Memory, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), an electrical carrier signal, a telecommunications signal, a software distribution medium, and so forth. The content of the computer readable storage medium can be appropriately increased or decreased according to the requirements of the legislation and the patent practice in the jurisdiction.
It will be apparent to those skilled in the art that, for convenience and brevity of description, only the above-described division of the functional units and modules is illustrated, and in practical application, the above-described functional distribution may be performed by different functional units and modules according to needs, i.e. the internal structure of the apparatus is divided into different functional units or modules to perform all or part of the above-described functions. The functional units and modules in the embodiment may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit, where the integrated units may be implemented in a form of hardware or a form of a software functional unit. In addition, the specific names of the functional units and modules are only for distinguishing from each other, and are not used for limiting the protection scope of the present application. The specific working process of the units and modules in the above system may refer to the corresponding process in the foregoing method embodiment, which is not described herein again.
It should be noted that, the method and the details thereof provided in the foregoing embodiments may be combined into the apparatus and the device provided in the embodiments, and are referred to each other and are not described in detail.
The above embodiments are only for illustrating the technical solution of the present application, and are not limiting; although the application has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present application, and are intended to be included in the scope of the present application.
Claims (10)
1. A vehicle turning auxiliary lighting device, characterized by comprising:
the auxiliary lighting units are used for carrying out auxiliary lighting when the vehicle turns, and each auxiliary lighting unit comprises a plurality of LED light sources and a fan-shaped lens module used for controlling the lighting angle and the lighting area of each LED light source;
the image acquisition unit is used for acquiring an external light environment and images in the illumination range of each auxiliary illumination unit, and identifying the images to obtain effective information, wherein the effective information comprises whether obstacles exist in the illumination range of each auxiliary illumination unit;
the angular displacement identification unit comprises an angle sensor for identifying the rotation angle of the front wheel of the automobile;
the LED driving units are connected with the auxiliary lighting units and are used for driving the LED light sources in the auxiliary lighting units;
the MCU micro-control unit is respectively connected with the image acquisition unit, the angular displacement identification unit and the LED driving unit and is used for determining an auxiliary illumination control strategy according to the external light environment and the effective information acquired by the image acquisition unit and the rotation angle of the front wheel of the automobile acquired by the angular displacement identification unit and controlling the LED driving unit to drive corresponding LED light sources in corresponding auxiliary illumination units according to the auxiliary illumination control strategy, wherein the auxiliary illumination control strategy comprises an LED light source switch control strategy and an LED light source brightness control strategy.
2. The vehicle turning facilitation lighting apparatus as defined in claim 1 wherein the vehicle turning facilitation lighting apparatus comprises: a left auxiliary lighting unit for auxiliary lighting when the vehicle turns left and a right auxiliary lighting unit for auxiliary lighting when the vehicle turns right, the left auxiliary lighting unit and the right auxiliary lighting unit being integrated inside a left headlamp assembly and inside a right headlamp assembly of the vehicle, respectively.
3. The vehicle turning auxiliary lighting apparatus according to claim 1 or 2, wherein the auxiliary lighting unit includes: the LED lamp comprises 16 LED light sources and a fan-shaped lens module, wherein the fan-shaped lens module comprises 16 subareas, the angle of each subarea is 4 degrees, and the positions of the subareas respectively correspond to the positions of the LED light sources.
4. A vehicle turning auxiliary lighting device as defined in claim 3, wherein the auxiliary lighting unit has an illumination range of 64 degrees of fan-shaped illumination area and an effective illumination radius of 25 meters.
5. The vehicle turning auxiliary lighting apparatus according to claim 2, wherein the image acquisition unit includes: the two cameras are integrated with photoresistors, are respectively used for acquiring images in the illumination range of the left auxiliary illumination unit and images in the illumination range of the right auxiliary illumination unit, and are both arranged at the position of a vehicle recorder of the vehicle.
6. The vehicle turning auxiliary lighting device according to claim 1 or 2, wherein the MCU micro-control unit is specifically configured to: when the vehicle is detected to be in a non-reverse gear state and a low beam or a high beam is started, determining an LED light source switch control strategy according to the external light environment acquired by the image acquisition unit and the front wheel rotation angle of the automobile acquired by the angular displacement identification unit;
the LED light source switch control strategy comprises the following steps: judging whether the external light environment acquired by the image acquisition unit is smaller than a preset value and whether the rotation angle of the front wheels of the automobile is larger than the preset value, if so, judging that the automobile needs auxiliary illumination, and controlling the LED driving unit to drive the corresponding LED light source in the auxiliary illumination unit according to the rotation angle of the front wheels of the automobile so that the auxiliary illumination unit projects a fan-shaped illumination area to the corresponding angle of the turning direction of the automobile.
7. The vehicle turning auxiliary lighting device of claim 6, wherein the MCU micro-control unit is further configured to determine a LED light source brightness control strategy according to the ambient light environment acquired by the image acquisition unit after determining that the vehicle needs auxiliary lighting;
the LED light source brightness control strategy comprises the following steps: and controlling the LED driving unit to drive each LED light source in the auxiliary lighting unit with preset power according to the numerical value of the external light environment.
8. The vehicle turning auxiliary lighting device according to claim 6, wherein the MCU micro-control unit is further configured to determine a LED light source brightness control strategy according to the effective information acquired by the image acquisition unit after determining that the vehicle needs auxiliary lighting;
the LED light source brightness control strategy comprises the following steps: judging whether an obstacle exists in the illumination range of the auxiliary illumination unit according to the effective information, if so, identifying the type of the obstacle, and adjusting the brightness of the corresponding LED light source in the auxiliary illumination unit according to the type of the obstacle, so that the auxiliary illumination unit projects a flawed sector illumination area to the corresponding angle of the turning direction of the vehicle;
the types of the obstacles comprise driving, pedestrians and other obstacles, when the obstacle is identified as the driving or the pedestrian, the brightness of each LED light source corresponding to the obstacle angle in the auxiliary lighting unit is reduced, and when the obstacle is identified as the other obstacle, the brightness of each LED light source corresponding to the obstacle angle in the auxiliary lighting unit is improved.
9. A control method applied to the vehicle turning auxiliary lighting device according to any one of claims 1 to 8, comprising:
s100, judging whether a vehicle has started a dipped headlight or a high beam, if so, executing a step S200;
s200, detecting an external light environment through the image acquisition unit and sending the external light environment to the MCU micro-control unit;
s300, detecting the rotation angle of the front wheel of the automobile through the angular displacement identification unit, and sending the rotation angle of the front wheel of the automobile to the MCU;
s400, judging whether auxiliary illumination is carried out or not through the MCU micro-control unit according to the external light environment and the rotation angle of the front wheels of the automobile, if yes, executing a step S500, otherwise, returning to the step S100;
s500, detecting effective information through the image acquisition unit, sending the effective information to the MCU micro-control unit, and determining an auxiliary lighting control strategy through the MCU micro-control unit according to the external light environment, the effective information and the rotation angle of the front wheels of the automobile;
s600, driving the corresponding LED light sources in the corresponding auxiliary lighting units through the LED driving units according to the auxiliary lighting control strategy, and carrying out auxiliary lighting on the turning direction of the vehicle.
10. An automobile, comprising: the vehicle turning auxiliary lighting device according to any one of claims 1 to 8.
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| CN202311062483.3A CN116749867A (en) | 2023-08-23 | 2023-08-23 | Vehicle turning auxiliary lighting device, control method and automobile |
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| CN202311062483.3A CN116749867A (en) | 2023-08-23 | 2023-08-23 | Vehicle turning auxiliary lighting device, control method and automobile |
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Application publication date: 20230915 |