CN112937423A - Height adjusting method of self-adaptive front lighting system - Google Patents
Height adjusting method of self-adaptive front lighting system Download PDFInfo
- Publication number
- CN112937423A CN112937423A CN202110263838.XA CN202110263838A CN112937423A CN 112937423 A CN112937423 A CN 112937423A CN 202110263838 A CN202110263838 A CN 202110263838A CN 112937423 A CN112937423 A CN 112937423A
- Authority
- CN
- China
- Prior art keywords
- line
- whole vehicle
- zero point
- inclination
- light
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 26
- 230000003044 adaptive effect Effects 0.000 claims description 11
- 238000007689 inspection Methods 0.000 claims description 2
- 238000011161 development Methods 0.000 abstract description 4
- 230000000007 visual effect Effects 0.000 abstract description 4
- 230000001133 acceleration Effects 0.000 description 4
- 238000004364 calculation method Methods 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Images
Classifications
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lighting Device Outwards From Vehicle And Optical Signal (AREA)
Abstract
The invention discloses a height adjusting method of a self-adaptive front lighting system, which comprises the following steps: calculating to obtain a longitudinal gradient signal through a finished automobile sensor signal; the AFS control unit acquires a longitudinal gradient signal of the whole vehicle in real time through a CAN network of the whole vehicle; the AFS control unit analyzes the longitudinal gradient signal of the whole vehicle to obtain the longitudinal inclination angle information of the whole vehicle body, the AFS execution unit is driven to automatically adjust the inclination of a vertical dimming zero point line of a dimming cut-off line relative to a reference line by inquiring a relation table of the longitudinal inclination angle of the whole vehicle body and the vertical dimming zero point inclination of the dimming cut-off line, and the light height of the headlamp is changed along with the change of the inclination of the vertical dimming zero point line of the dimming cut-off line so as to increase the lighting visual field. The height sensor does not need to be added, the development cost of the AFS system is greatly reduced, and the real-time performance is better.
Description
Technical Field
The invention relates to the technical field of an adaptive front lighting system (AFS), in particular to a height adjusting method of the AFS.
Background
An Adaptive Front-lighting System (AFS) is an electromechanical integrated System capable of automatically adjusting the tilt angle of the optical axis of the headlights of a vehicle according to the steering wheel angle, the speed, the pitch state of the vehicle body, and other relevant signals.
The AFS system is divided into a left-right horizontal adjusting function and a height adjusting function of the headlamp, and actively adjusts the illumination angle of the headlamp so as to increase the visual field of a driver, guarantee driving safety and meet the requirements of regulations and safety. As shown in fig. 1, the conventional AFS system height adjustment method is as follows: the AFS controller unit acquires a power supply through a whole vehicle wire harness, judges the height difference of a front axle and a rear axle through signals of a front axle and a rear axle of a vehicle body, and calculates the pitching gradient state of the whole vehicle so as to obtain a longitudinal gradient signal of the whole vehicle, outputs different voltage signals through logic operation on the longitudinal gradient signal and other signals of the whole vehicle so as to control a motor actuator, and realizes the function of automatically adjusting the height of headlamp light.
Disclosure of Invention
The invention aims to provide a height adjusting method of a self-adaptive front lighting system, which does not need to increase a height sensor, greatly reduces the development cost of an AFS (automatic front lighting system) and has better real-time property.
To achieve the above object, the present invention provides a method for adjusting the height of an adaptive front lighting system, comprising the steps of:
(S1) calculating to obtain a longitudinal gradient signal through a finished automobile sensor signal;
(S2) the AFS control unit acquires a power supply through a finished automobile wire harness and acquires a finished automobile longitudinal gradient signal in real time through a finished automobile CAN network;
(S3) the AFS control unit analyzes the longitudinal gradient signal of the whole vehicle to obtain the longitudinal inclination angle information of the whole vehicle body, the AFS execution unit is driven to automatically adjust the inclination of the light and shade cut-off line vertical light adjusting zero point line relative to the reference line by inquiring a relation table of the longitudinal inclination angle of the whole vehicle body-the light and shade cut-off line vertical light adjusting zero point inclination, and the light height of the headlamp is changed along with the change of the light and shade cut-off line vertical light adjusting zero point line inclination so as to increase the lighting visual field;
the light and shade cut-off line vertical dimming zero point is arranged in the vertical gradient range of the dipped light and shade cut-off line, the light and shade cut-off line vertical dimming zero point is positioned below the reference axis, and the gradient between the initial state light and shade cut-off line vertical dimming zero point line and the reference axis is-a, a is greater than 0; the reference axis is parallel to the road surface, and the light and shade cut-off line vertical direction dimming zero point line refers to a straight line passing through the reference center and the light and shade cut-off line vertical direction dimming zero point.
Further, -a is a calibration value.
Further, the relation table of the trim angle of the whole vehicle body-the cut-off line of the light modulation zero inclination vertically comprises the following contents:
if the trim angle of the whole vehicle body is smaller than-b, the AFS control unit drives the AFS execution unit to adjust the height of the headlamp light upwards, and the inclination of a light and shade cutoff line to a light adjusting zero point in the vertical direction is-a + c;
if the longitudinal inclination angle of the whole vehicle body is larger than b, the AFS control unit drives the AFS execution unit to adjust the height of the headlamp light downwards, and the inclination of a light and shade cut-off line to a light adjusting zero point in the vertical direction is-a-d;
if the longitudinal inclination angle of the whole vehicle body is more than or equal to-b and less than or equal to b, the zero position line is not adjusted;
wherein the trim angle of the whole vehicle body is negative when inclining downwards and positive when inclining upwards; the value range of b is 3% -6%; the value range of c is 0 to 0.5 percent; the value range of d is 0 to 1.5 percent.
Further, a is 1%.
Further, b is 5%.
Further, d is 1.5%.
Further, c is 0.5%.
Further, the AFS execution unit is a direct current motor.
Further, the relation table of the longitudinal inclination angle of the whole vehicle body-the light and shade cut-off line vertical to the light adjusting zero point gradient is obtained through factory test calibration of the whole vehicle.
Compared with the prior art, the invention has the following advantages:
the height adjusting method of the self-adaptive front lighting system fully excavates the existing signals of the vehicle body for developing the whole vehicle subsystem, realizes the same function, and has small calculation amount, good real-time performance and high accuracy; the automatic adjustment of the light in the regulation range is realized according to the longitudinal gradient signal value of the whole vehicle, the cost can be reduced while the related regulation performance requirements are met, the problem that the development cost of an AFS (automatic fuel supply) system is too high is solved, the popularization and the utilization of the system in more vehicle types are facilitated, and the driving safety of a user is improved.
Drawings
FIG. 1 is a flow chart of a conventional FS system height adjustment method;
FIG. 2 is a flow chart of a method of height adjustment for the adaptive front lighting system of the present invention;
fig. 3 is a schematic view of the structure of the zero point position, the reference line and the low beam cutoff line of the vehicle headlamp.
Detailed Description
The following further describes embodiments of the present invention with reference to the drawings.
The vertical inclination of the low-beam cut-off line G should be maintained in the range specified in GB-47855.2.6.1.2: -0.5% to-2.5% (h <0.8m), the low beam cutoff G being below the optical axis. Wherein, -0.5% represents the upper limit low beam cutoff line G1 of the low beam cutoff line G, and-2.5% represents the lower limit low beam cutoff line G2 of the low beam cutoff line G, and the cutoff line vertical dimming zero point line G is arranged in the vertical inclination range of the low beam cutoff line G and is arranged according to the actual situation.
Referring to fig. 2 and 3, the present embodiment discloses a method for adjusting the height of an adaptive front lighting system, comprising the following steps:
(S1) calculating to obtain a longitudinal gradient signal through a finished automobile sensor signal;
(S2) the AFS control unit acquires a power supply through a finished automobile wire harness and acquires a finished automobile longitudinal gradient signal in real time through a finished automobile CAN network;
(S3) the AFS control unit analyzes the longitudinal gradient signal of the whole vehicle to obtain the longitudinal inclination angle information of the whole vehicle body, the AFS execution unit is driven to automatically adjust the inclination of the light and shade cut-off line vertical light adjusting zero point line g relative to the reference line by inquiring a relation table of the longitudinal inclination angle of the whole vehicle body-the light and shade cut-off line vertical light adjusting zero point inclination, and the light height of the headlamp is changed along with the change of the inclination of the light and shade cut-off line vertical light adjusting zero point line g so as to increase the lighting visual field;
the cut-off line vertical dimming zero point is arranged in the vertical inclination range of the dipped beam cut-off line G, the cut-off line vertical dimming zero point is positioned below the reference axis L0, and the inclination of the cut-off line vertical dimming zero point line G and the reference axis L0 in the initial state is-a, a is greater than 0; the reference axis L0 is parallel to the road surface, and the cutoff line perpendicular to the dimming zero line g is a straight line passing through the reference center and the cutoff line perpendicular to the dimming zero point. The reference center refers to the intersection of the headlamp reference axis L0 and the lens surface. Here, the lower side of the reference axis L0 is set to be negative, and the upper side is set to be positive.
In this embodiment, the relation table of the longitudinal inclination angle of the finished vehicle body-the vertical light modulation zero inclination of the cut-off line is obtained by factory inspection and calibration of the finished vehicle.
In this embodiment, -a is a calibration value. The value a is taken in the range of the vertical inclination of the low beam cutoff G depending on the actual conditions of the respective host plant.
In this embodiment, the relation table of the vehicle body pitch angle-cut-off line vertical to the dimming zero point includes the following contents:
if the trim angle of the whole vehicle body is smaller than-b, the AFS control unit drives the AFS execution unit to adjust the height of the headlamp light upwards, and the inclination of a light and shade cutoff line to a light adjusting zero point in the vertical direction is-a + c;
if the longitudinal inclination angle of the whole vehicle body is larger than b, the AFS control unit drives the AFS execution unit to adjust the height of the headlamp light downwards, and the inclination of a light and shade cut-off line to a light adjusting zero point in the vertical direction is-a-d;
if the longitudinal inclination angle of the whole vehicle body is more than or equal to-b and less than or equal to b, the zero position line is not adjusted;
wherein the trim angle of the whole vehicle body is negative when inclining downwards and positive when inclining upwards; the value range of b is 3% -6%; the value range of c is 0 to 0.5 percent; the value range of d is 0 to 1.5 percent. The value ranges of b, c and d are general ranges, but more specific value ranges are determined according to chassis design values of different vehicle types. Optionally, a is 1%. (ii) a b is 5%; d is 1.5%; c is 0.5%.
In the present embodiment, the AFS executing unit is a dc motor. The life requirement of the dc motor cannot be adjusted too frequently.
According to the real-vehicle acquisition and analysis of the longitudinal gradient signal, the gradient tangent value interval of the longitudinal gradient signal is [ -25%, 25% ], the precision is 1%, namely the corresponding gradient [ -14 degrees, 14 degrees ], the precision is 0.57 degrees, and therefore, the precision can meet the regulation requirements in the longitudinal gradient signal range of the whole vehicle.
In this embodiment, in step (S1), the method for calculating the longitudinal gradient signal may adopt a gradient estimation method based on acceleration sensing information and a gradient estimation method based on longitudinal dynamics, which are disclosed in a paper "algorithm for real-time identification of longitudinal gradient of vehicle dynamics and acceleration sensing signal" commonly applied by the national key laboratory of automobile safety and energy conservation at the university of qinghua and the general institute of automotive engineering research, changan automobile sharps ltd. However, when the vehicle is driven, since the vehicle is subjected to an inertial force and has a pitching motion, and an acceleration signal contains a large amount of noise in a complex road condition such as a bumpy road, it is impossible to directly calculate a gradient value using acceleration sensing information. At this time, if the slope value is calculated by using the vehicle longitudinal dynamics, the accuracy is high. The paper integrates the two methods, introduces confidence factors, calculates the confidence factors under different working conditions according to respective application characteristics, further calculates the initial value of the gradient, and then obtains the final gradient value through generalized hysteresis filtering processing. The longitudinal gradient identification method is used as a key parameter of the ramp working condition and applied to a real vehicle controller, but is not applied to an AFS system. In some embodiments, the longitudinal slope signal may also be obtained by other algorithms.
The height adjusting method of the self-adaptive front lighting system fully excavates the existing signals of the vehicle body for developing the whole vehicle subsystem, realizes the same function, and has small calculation amount, good real-time performance and high accuracy; the automatic adjustment of the light in the regulation range is realized according to the longitudinal gradient signal value of the whole vehicle, the cost can be reduced while the related regulation performance requirements are met, the problem that the development cost of an AFS (automatic fuel supply) system is too high is solved, the popularization and the utilization of the system in more vehicle types are facilitated, and the driving safety of a user is improved.
The foregoing detailed description of the preferred embodiments of the invention has been presented. It should be understood that numerous modifications and variations could be devised by those skilled in the art in light of the present teachings without departing from the inventive concepts. Therefore, the technical solutions available to those skilled in the art through logic analysis, reasoning and limited experiments based on the prior art according to the concept of the present invention should be within the scope of protection defined by the claims.
Claims (9)
1. A method of height adjustment for an adaptive front lighting system, comprising the steps of:
(S1) calculating to obtain a longitudinal gradient signal through a finished automobile sensor signal;
(S2) the AFS control unit acquires a power supply through a finished automobile wire harness and acquires a finished automobile longitudinal gradient signal in real time through a finished automobile CAN network;
(S3) the AFS control unit analyzes the longitudinal gradient signal of the whole vehicle to obtain the longitudinal gradient information of the body of the whole vehicle, the AFS execution unit is driven to automatically adjust the inclination of a light and shade cut-off line vertical light adjusting zero point line (g) relative to a reference line by inquiring a relation table of the longitudinal gradient of the body of the whole vehicle and the inclination of the light and shade cut-off line vertical light adjusting zero point line, and the height of the headlamp light changes along with the change of the inclination of the light and shade cut-off line vertical light adjusting zero point line (g) so as to increase the;
wherein, the cut-off line vertical dimming zero point is arranged in the vertical gradient range of the dipped beam cut-off line (G), the cut-off line vertical dimming zero point is positioned below the reference axis (L0), and the gradient of the cut-off line vertical dimming zero point line (G) and the reference axis (L0) in the initial state is-a, a > 0; the reference axis (L0) is parallel to the road surface, and the cut-off line vertical dimming zero line (g) refers to a straight line passing through the reference center and the cut-off line vertical dimming zero point.
2. The method for adjusting the height of an adaptive front lighting system according to claim 1, wherein-a is a calibration value.
3. The method for adjusting the height of an adaptive front lighting system according to claim 1 or 2, wherein the table of the relationship between the trim angle of the vehicle body and the vertical inclination of the dimming zero point of the cutoff line specifically comprises the following steps:
if the trim angle of the whole vehicle body is smaller than-b, the AFS control unit drives the AFS execution unit to adjust the height of the headlamp light upwards, and the inclination of a light and shade cutoff line to a light adjusting zero point in the vertical direction is-a + c;
if the longitudinal inclination angle of the whole vehicle body is larger than b, the AFS control unit drives the AFS execution unit to adjust the height of the headlamp light downwards, and the inclination of a light and shade cut-off line to a light adjusting zero point in the vertical direction is-a-d;
if the longitudinal inclination angle of the whole vehicle body is more than or equal to-b and less than or equal to b, the zero position line is not adjusted;
wherein the trim angle of the whole vehicle body is negative when inclining downwards and positive when inclining upwards; the value range of b is 3% -6%; the value range of c is 0 to 0.5 percent; the value range of d is 0 to 1.5 percent.
4. The method of claim 3, wherein a is 1%.
5. The method of claim 4, wherein b is 5%.
6. The method for height adjustment of an adaptive front lighting system according to claim 4 or 5, wherein d-1.5%.
7. The method of claim 6, wherein c is 0.5%.
8. The height adjustment method of an adaptive front lighting system according to claim 1, 2, 4, 5 or 7, wherein the AFS executing unit is a DC motor.
9. The method for adjusting the height of an adaptive front lighting system according to claim 1, 2, 4, 5 or 7, wherein the relationship table of the vertical dimming zero-point inclination of the trim angle-cutoff line of the whole vehicle body is obtained by calibration of factory inspection of the whole vehicle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110263838.XA CN112937423A (en) | 2021-03-11 | 2021-03-11 | Height adjusting method of self-adaptive front lighting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110263838.XA CN112937423A (en) | 2021-03-11 | 2021-03-11 | Height adjusting method of self-adaptive front lighting system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112937423A true CN112937423A (en) | 2021-06-11 |
Family
ID=76229156
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110263838.XA Pending CN112937423A (en) | 2021-03-11 | 2021-03-11 | Height adjusting method of self-adaptive front lighting system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112937423A (en) |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1160506A2 (en) * | 2000-05-31 | 2001-12-05 | Robert Bosch Gmbh | Vehicle headlamp of the projection type and lighting device comprising at least one such a headlamp |
| JP2010143424A (en) * | 2008-12-19 | 2010-07-01 | Koito Mfg Co Ltd | Auto-leveling system for vehicular lamp |
| JP2012101624A (en) * | 2010-11-09 | 2012-05-31 | Koito Mfg Co Ltd | Control device of lighting fixture for vehicle, lighting fixture system for vehicle, and control method of lighting fixture for vehicle |
| DE102012000453A1 (en) * | 2012-01-13 | 2012-08-02 | Daimler Ag | Method for adjusting low beam distribution of front light system of vehicle, involves controlling low beam distribution based on pitch motions of vehicle such that horizontal light-dark borders are adjusted independent of pitch motions |
| DE102011017697A1 (en) * | 2011-04-28 | 2012-10-31 | Robert Bosch Gmbh | Method for headlamp leveling at least one headlamp of a vehicle and light control device |
| CN104595856A (en) * | 2014-11-20 | 2015-05-06 | 重庆长安汽车股份有限公司 | Automobile lamp dimming mechanism |
| CN104742796A (en) * | 2015-03-13 | 2015-07-01 | 安徽天健环保车辆部件有限公司 | Automatic lamplight controller |
| CN105835754A (en) * | 2016-02-22 | 2016-08-10 | 北京工业大学 | Control device for actively adjusting pitch angle of headlamps by sensing road surface fluctuation through infrared |
| CN106828286A (en) * | 2017-02-22 | 2017-06-13 | 北京经纬恒润科技有限公司 | A kind of headlamp tilt adjustment method of vehicle, apparatus and system |
| US20170327030A1 (en) * | 2016-05-16 | 2017-11-16 | Lg Electronics Inc. | Control Device Mounted On Vehicle And Method For Controlling The Same |
| WO2018215609A1 (en) * | 2017-05-26 | 2018-11-29 | Daimler Ag | Lighting device and method for operating same |
| CN109693605A (en) * | 2017-10-24 | 2019-04-30 | 现代自动车株式会社 | By the horizontal method for compensating headlamp using deviation warning system |
| CN111775825A (en) * | 2020-06-15 | 2020-10-16 | 爱驰汽车有限公司 | Car lamp dimming system and car |
-
2021
- 2021-03-11 CN CN202110263838.XA patent/CN112937423A/en active Pending
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1160506A2 (en) * | 2000-05-31 | 2001-12-05 | Robert Bosch Gmbh | Vehicle headlamp of the projection type and lighting device comprising at least one such a headlamp |
| JP2010143424A (en) * | 2008-12-19 | 2010-07-01 | Koito Mfg Co Ltd | Auto-leveling system for vehicular lamp |
| JP2012101624A (en) * | 2010-11-09 | 2012-05-31 | Koito Mfg Co Ltd | Control device of lighting fixture for vehicle, lighting fixture system for vehicle, and control method of lighting fixture for vehicle |
| DE102011017697A1 (en) * | 2011-04-28 | 2012-10-31 | Robert Bosch Gmbh | Method for headlamp leveling at least one headlamp of a vehicle and light control device |
| DE102012000453A1 (en) * | 2012-01-13 | 2012-08-02 | Daimler Ag | Method for adjusting low beam distribution of front light system of vehicle, involves controlling low beam distribution based on pitch motions of vehicle such that horizontal light-dark borders are adjusted independent of pitch motions |
| CN104595856A (en) * | 2014-11-20 | 2015-05-06 | 重庆长安汽车股份有限公司 | Automobile lamp dimming mechanism |
| CN104742796A (en) * | 2015-03-13 | 2015-07-01 | 安徽天健环保车辆部件有限公司 | Automatic lamplight controller |
| CN105835754A (en) * | 2016-02-22 | 2016-08-10 | 北京工业大学 | Control device for actively adjusting pitch angle of headlamps by sensing road surface fluctuation through infrared |
| US20170327030A1 (en) * | 2016-05-16 | 2017-11-16 | Lg Electronics Inc. | Control Device Mounted On Vehicle And Method For Controlling The Same |
| CN106828286A (en) * | 2017-02-22 | 2017-06-13 | 北京经纬恒润科技有限公司 | A kind of headlamp tilt adjustment method of vehicle, apparatus and system |
| WO2018215609A1 (en) * | 2017-05-26 | 2018-11-29 | Daimler Ag | Lighting device and method for operating same |
| CN110461651A (en) * | 2017-05-26 | 2019-11-15 | 戴姆勒股份公司 | Lighting device and its operating method |
| CN109693605A (en) * | 2017-10-24 | 2019-04-30 | 现代自动车株式会社 | By the horizontal method for compensating headlamp using deviation warning system |
| CN111775825A (en) * | 2020-06-15 | 2020-10-16 | 爱驰汽车有限公司 | Car lamp dimming system and car |
Non-Patent Citations (1)
| Title |
|---|
| 冉旭等: "基于汽车动力学与加速度传感信息的纵向坡度实时识别算法", 《机械工程学报》 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6547425B2 (en) | Automatic headlight aiming device for vehicles | |
| US6229263B1 (en) | Lighting-direction control unit for vehicle lamp | |
| US9533705B2 (en) | Vehicle steering system | |
| US20150151669A1 (en) | Method and control unit for adapting an upper headlight beam boundary of a light cone | |
| US7118238B2 (en) | Apparatus for automatically adjusting direction of light axis of vehicle headlight | |
| US20150051797A1 (en) | Method and control unit for adapting an upper headlight beam boundary of a light cone | |
| WO2013080614A1 (en) | Vehicle headlight control device and method, and vehicle headlight control system | |
| CN1241773C (en) | Automatic regulation device for headlight of vehicle | |
| CN108819831B (en) | Method and system for automatically adjusting automobile light | |
| JP3782625B2 (en) | Auto-leveling device for automotive headlamps | |
| US20040125608A1 (en) | Irradiating direction control apparatus of headlamp for vehicle | |
| CN101324310A (en) | Intelligent illuminating system of automobile headlight | |
| CN105501107A (en) | Automatic vehicle illumination control system and control method | |
| CN105711482B (en) | A kind of automatic horizontal light adjusting system and light-dimming method for car headlamp | |
| CN115805862B (en) | Self-adaptive headlamp adjusting method and related equipment | |
| JP2000085458A (en) | Automatic leveling device for automobile headlight | |
| CN110745130A (en) | Driving assistance system based on artificial intelligence | |
| JP2009248951A (en) | Auto-levelling system for vehicle lamp | |
| CN112937423A (en) | Height adjusting method of self-adaptive front lighting system | |
| KR20120136720A (en) | System for controlling beam pattern of headlamp and thereof method | |
| WO2013180113A1 (en) | Apparatus and method for detecting inclination of vehicle relative to road surface | |
| JP5192838B2 (en) | Auto leveling system for vehicle lamps | |
| JP2008247210A (en) | Auto leveling device | |
| JP3518362B2 (en) | Vehicle pitch angle calculation device | |
| US7053762B2 (en) | Projecting direction control system for vehicle headlamp |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210611 |