CN108569191A - A kind of pixel type self-adapted car headlamp control system based on DLP - Google Patents
A kind of pixel type self-adapted car headlamp control system based on DLP Download PDFInfo
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- CN108569191A CN108569191A CN201710255961.0A CN201710255961A CN108569191A CN 108569191 A CN108569191 A CN 108569191A CN 201710255961 A CN201710255961 A CN 201710255961A CN 108569191 A CN108569191 A CN 108569191A
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- Prior art keywords
- chip
- dlp
- led
- light source
- control system
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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
- B60Q1/076—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 by electrical means including means to transmit the movements, e.g. shafts or joints
-
- 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
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/50—Circuit arrangements for operating light-emitting diodes [LED] responsive to malfunctions or undesirable behaviour of LEDs; responsive to LED life; Protective circuits
-
- 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
- B60Q2400/00—Special features or arrangements of exterior signal lamps for vehicles
- B60Q2400/20—Multi-color single source or LED matrix, e.g. yellow blinker and red brake lamp generated by single lamp
Abstract
The invention belongs to automobile lamp control technology fields, and in particular to a kind of pixel type self-adapted car headlamp control system based on DLP, including：For acquiring the image processor of external image；MCU chip receives the CAN message that image processor is sent, and CAN message is parsed and calculated；DLP controls chip, receives the control information that MCU chip calculates；Dmd chip, receives the control information of DLP control chips, and changes the angle of the tiny mirror of its internal micromirror matrix according to the control information；LED light source component；LED drive chip receives the pwm signal that MCU chip is sent and drives the bright of LED light source component or go out and brightness；LED light source component is sent out on uniform beam to the inside micromirror matrix of dmd chip, is projected after the inside micromirror matrix reflection of dmd chip by matching lens outside.Control accuracy of the present invention is high, and be swift in response sensitive and good compatibility.
Description
Technical field
The present invention relates to automobile lamp control technology field, before especially a kind of pixel type self-adapted car based on DLP
Illuminator control system.
Background technology
With the continuous improvement of people's living standards, automobile has become the daily walking-replacing tool of thousands of families, but
It is with the continuous improvement of automobile utilization rate, traffic accident incidence is also riseing year by year.The number grasped in recent years according to Ministry of Communications
According to analysis, the probability that traffic accident occurs for Chinese night is 1.5 times of daytime, and 60% major motor vehicle death by accident is happened at night
Between, the night traffic accident of wherein 30%-40% is derived from abuse distance light and underlit.Therefore, many car light factories of recent domestic
Start the research for being dedicated to automobile active safety technology with research institution.Wherein, it relates generally to carry AFS in car light field
Before the automobile of (Adaptive Front-lighting System, AFS) or ADB (Adaptive Driving Beam) function
Illuminator.
Traditional Adaptive Mechanical headlamp Adjustment precision is low, and there is abrasion during adjusting.Matrix form headlamp
Due to the LED main light source limited amounts of LED light source matrix, the control accuracy of angle and dark space to light is low, and resolution ratio is relatively low.
Pixel type adaptive front lamp based on DLP is that one of AFS and ADB functions is integrated and upgraded, this is mainly
DLP technologies are relied on to realize.DLP (Digital Light Processing) is a revolutionary character of projection and display information
New method, by the high DMD micro mirror elements of one piece of reflectivity (Digital Micromirror Device), by right
The control of micro mirror angle, changes the reflection angle of light in its internal micromirror matrix, to form dark space in specified region, keeps away
Exempt from dazzling.Meanwhile and maintain most light on road surface, in addition to there is specific region existing for other vehicles, these regions are logical
Light type dynamic shielding is crossed, ensure that the peak use rate of night lights, effectively raises driving at night safety.
But the prior art only proposes and realizes the problem of automobile lamp brightness and dark space adjust by DLP technologies,
Less to the research of control strategy, Control system architecture is often more complex, and integrated level is low, and circuit structure is complicated, and controls essence
Spend it is low, can not accurately control car light light regulating transmission angle and dark space size.
Invention content
The purpose of the present invention is overcome in the prior art control system circuit it is complicated, the low problem of control accuracy, and
A kind of control accuracy of research and design is high, is shone before sensitive and good compatibility the pixel type self-adapted car based on DLP that is swift in response
Lamp control system and control method.
The technical solution adopted by the present invention to solve the technical problems is：
A kind of pixel type self-adapted car headlamp control system based on DLP, which is characterized in that including：
Image processor, described image processor are connect with CAN bus, are used for collection vehicle external image；
MCU chip, the MCU chip receives the CAN message that described image processor is sent, and is solved to CAN message
Analysis and calculating；
DLP controls chip, and the DLP controls chip receives the control information that the MCU chip calculates；
Dmd chip, the dmd chip receive the control information of DLP control chips, and change inside it according to the control information
The angle of the tiny mirror of micromirror matrix；
LED light source component；
LED drive chip, the LED drive chip receive the pwm signal that the MCU chip is sent and drive LED light source
Component bright is gone out and brightness；
The LED light source component is sent out on uniform beam to the inside micromirror matrix of the dmd chip, by dmd chip
The reflection of inside micromirror matrix after projected by matching lens outside.
Further, the LED light source component includes LED main light sources, poly- lens and amendment lens.
Further, the DLP controls chip sends unlatching and the pass that the enabled orders of LED control the LED drive chip
It closes.
Further, the temperature information of itself is fed back to MCU by the LED drive chip by DLP control chips in real time
Chip, the duty ratio for the pwm pulse signal that the MCU chip is sent out according to the high high adjustment of temperature of LED drive chip, to adjust
The electric current of LED drive chip ensures the safety of LED drive chip.
Further, CAN message is sent to MCU chip by described image processor by CAN transceiver.
Compared with the existing technology, the present invention apparently has the advantages that：
1, the pixel type self-adapted car headlamp control system control method based on DLP of the invention is simple, integrated level
Height, circuit structure is simple, and control accuracy is high, is swift in response sensitive.
2, external to be communicated using CAN bus, good compatibility, inside is communicated using IIC Integration Bus, can be read and be write online
Enter data, realization method is simple.
3, with complete circuit protection mechalusm, the brightness of the duty cycle adjustment LED main light sources by adjusting pwm signal,
Protect circuit.
Description of the drawings
The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.
Fig. 1 is a kind of schematic diagram of pixel type self-adapted car headlamp control system based on DLP of the present invention；
Fig. 2 be dmd chip micro mirror "ON" and "off" state under light reflectogram.
In figure：1, image processor, 2, CAN transceiver, 3, MCU chip, 4, DLP control chip, 5, LED drive chip,
6, LED light source component, 7, dmd chip, 8, match lens outside.
Specific implementation mode
In conjunction with the accompanying drawings, the present invention is further explained in detail.These attached drawings are simplified schematic diagram, only with
Illustration illustrates the basic structure of the present invention, therefore it only shows the composition relevant to the invention.
A kind of pixel type self-adapted car headlamp control system based on DLP of the present invention as Figure 1-Figure 2
Specific embodiment, including：Image acquisition device, light source driving units, control unit and execution unit.Wherein, light source driving units
Including one piece of LED drive chip 5 and LED light source component 6, LED light source component 6 includes LED main light sources, poly- lens and corrects saturating
Mirror.Image acquisition device is connected in CAN bus, for acquiring external image, and external image is sent out by the form of CAN message
Give control unit, control unit mainly controls chip 4 by one piece of DLP and one piece of MCU chip 3 forms, DLP control chip 4 with
It is connected using iic bus between MCU chip 3, is connected using CAN bus between MCU chip 3 and image processor 1 i.e. host computer,
Signal is transmitted by CAN transceiver 2.Execution unit mainly by one piece of dmd chip 7 and it is outer formed with lens 8, dmd chip 7 and
DLP is connected between controlling chip 4 using multiple signals line.The light that LED main light sources are sent out is by poly- lens and corrects lens
Refraction, forms uniform beam corresponding with 7 micromirror matrix of dmd chip, and uniform beam is transmitted to the micromirror matrix of dmd chip 7
It on speculum and reflects, the light of reflection forms required upper beam shape through being emitted outside with lens 8.
Specifically, MCU chip 3 is sent to by CAN message after the acquisition of image processor 1 external image, MCU chip 3 is right
CAN message sends result to DLP control chips 4 after carrying out parsing and algorithm process, and DLP controls chip 4 according to result of calculation
Dmd chip 7 is controlled, the control to vehicle front lighting lamplight type is executed by dmd chip 7, dmd chip 7 is by changing in it
The angle of the tiny mirror of portion's micromirror matrix realizes the "on" and "off" of eyeglass.As shown in Fig. 2, at the eyeglass of dmd chip 7
When "On" state, the light of LED light source is gone out via specified light path and by lens reflecting.Conversely, when the mirror of dmd chip 7
When piece is in "Off" state, the light of LED light source, which will be reflected to non-designated optical path area, to be gone out by lens reflecting,
Thus it can reach the automatic purpose for changing light type.Dmd chip 7 reflects the light of needs to DLP throwings by changing the angle of micro mirror
The projection lens of lighting system, the outer lens across car light after refractor reflects emit, and form required vapour
Vehicle upper beam shape, is finally reached abblendbar purpose.
DLP controls the opening and closing that chip 4 controls LED drive chip 5 by sending the enabled orders of LED.LED drives core
Piece 5 is by the pwm signal transmitted by reception control unit, it can be achieved that adjusting to 6 brightness of LED light source component.LED drive chip
Its temperature information is controlled the duty that 4 Real-time Feedback of chip passes through adjusting pwm signal to MCU chip 3, MUC chips by 5 by DLP
Than the electric current for adjusting LED chip, to ensure the safety of LED chip.
Headlamp control system using the present invention, distance light, dipped beam, AFS, ADB anti-glare light function can be by one
Lamp is realized, and has higher headlamp resolution ratio.
Specifically, in the present embodiment, 2 model TJA1041A of CAN transceiver, 3 model of MCU chip
TMS320F28023, DLP control 4 model DLPC120 of chip, 5 model TPS92602 of LED drive chip.
Control method using the control system of the pixel type adaptive front lamp based on DLP of the present embodiment is：
1, it is powered on to control unit, 3 each module initialization of MCU chip；
2, DLP controls chip 4 and initializes；
3, after the completion of above-mentioned initialization, control unit self-test, self-test content includes：Whether operating voltage meet the requirements, MCU
Whether whether normal, LED light source component 6 the temperature of chip 3 and DLP control chip 4 communications meets the requirements；
4, after control unit power-on self-test passes through, according to the control command of image processor 1, to the micro mirror of dmd chip 7
Matrix is adjusted control.The light that the micromirror matrix reflection of dmd chip 7 needs throws the projection lens of lighting system to DLP, passes through
It passes through the outer lens of car light to emit after refractor refraction, forms required headlamp irradiation light shape.
For the ordinary skill in the art, specific embodiment has only carried out example in conjunction with attached drawing to the present invention
Property description, it is clear that the present invention specific implementation be not subject to the restrictions described above, as long as use the present invention methodology and skill
Art scheme carry out various unsubstantialities improvement, or it is not improved by the present invention design and technical solution directly apply to it
Its occasion, within protection scope of the present invention.
Claims (5)
1. a kind of pixel type self-adapted car headlamp control system based on DLP, which is characterized in that including：
Image processor (1), described image processor (1) are connect with CAN bus, are used for collection vehicle external image；
MCU chip (3), the MCU chip (3) receive the CAN message that described image processor (1) is sent, and to CAN message into
Row parsing and calculating；
DLP controls chip (4), and the DLP control chips (4) receive the control information that the MCU chip (3) calculates；
Dmd chip (7), the dmd chip (7) receive the control information of DLP control chips (4), and change according to the control information
The angle of the tiny mirror of its internal micromirror matrix；
LED light source component (6)；
LED drive chip (5), the LED drive chip (5) receives the pwm signal that the MCU chip (3) sends, and drives
LED light source component (6) bright is gone out and brightness；
The LED light source component (6) sends out on uniform beam to the inside micromirror matrix of the dmd chip (7), by DMD cores
It is projected after the inside micromirror matrix reflection of piece (7) by matching lens (8) outside.
2. the pixel type self-adapted car headlamp control system according to claim 1 based on DLP, which is characterized in that
The LED light source component (6) includes LED main light sources, poly- lens and amendment lens.
3. the pixel type self-adapted car headlamp control system according to claim 1 based on DLP, which is characterized in that
The DLP control chips (4) send the opening and closing that the enabled orders of LED control the LED drive chip (5).
4. the pixel type self-adapted car headlamp control system according to claim 1 based on DLP, which is characterized in that
The temperature information of itself is controlled chip (4) by DLP in real time and feeds back to MCU chip (3) by the LED drive chip (5), described
The duty ratio for the pwm pulse signal that MCU chip (3) is sent out according to the high high adjustment of LED drive chip (5) temperature, to adjust LED
The electric current of driving chip (5) ensures the safety of LED drive chip (5).
5. the pixel type self-adapted car headlamp control system according to claim 1 based on DLP, which is characterized in that
CAN message is sent to MCU chip (3) by described image processor (1) by CAN transceiver (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201710255961.0A CN108569191A (en) | 2017-04-19 | 2017-04-19 | A kind of pixel type self-adapted car headlamp control system based on DLP |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710255961.0A CN108569191A (en) | 2017-04-19 | 2017-04-19 | A kind of pixel type self-adapted car headlamp control system based on DLP |
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| CN201710255961.0A Pending CN108569191A (en) | 2017-04-19 | 2017-04-19 | A kind of pixel type self-adapted car headlamp control system based on DLP |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111591207A (en) * | 2020-05-14 | 2020-08-28 | 大茂伟瑞柯车灯有限公司 | Control method for realizing projection effect of automobile headlamp based on Pixel-LED |
| CN114056224A (en) * | 2020-08-07 | 2022-02-18 | 比亚迪股份有限公司 | Control method of vehicle headlamp and vehicle |
| CN117432969A (en) * | 2023-12-19 | 2024-01-23 | 保定来福汽车照明集团沧州有限公司 | Dynamic DLP miniature projection lamp for automobile |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2006602A1 (en) * | 2007-06-18 | 2008-12-24 | Zumtobel Lighting GmbH | Lighting device with two usable optical path lengths |
| US20150160454A1 (en) * | 2013-12-09 | 2015-06-11 | Texas Instruments Incorporated | Multiple Illumination Sources for DMD Lighting Apparatus and Methods |
| CN104972959A (en) * | 2014-04-08 | 2015-10-14 | 福特全球技术公司 | Vehicle headlamp system |
| CN105182661A (en) * | 2015-08-26 | 2015-12-23 | 南京先进激光技术研究院 | Single DMD projection device with white light source |
| CN106043104A (en) * | 2016-07-20 | 2016-10-26 | 上海小糸车灯有限公司 | LiFi-and-DLP-based automotive illumination system and vehicle illumination signal device hereof |
| CN206884861U (en) * | 2017-04-19 | 2018-01-16 | 常州星宇车灯股份有限公司 | A kind of pixel type self-adapted car headlamp control system based on DLP |
-
2017
- 2017-04-19 CN CN201710255961.0A patent/CN108569191A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2006602A1 (en) * | 2007-06-18 | 2008-12-24 | Zumtobel Lighting GmbH | Lighting device with two usable optical path lengths |
| US20150160454A1 (en) * | 2013-12-09 | 2015-06-11 | Texas Instruments Incorporated | Multiple Illumination Sources for DMD Lighting Apparatus and Methods |
| CN104972959A (en) * | 2014-04-08 | 2015-10-14 | 福特全球技术公司 | Vehicle headlamp system |
| CN105182661A (en) * | 2015-08-26 | 2015-12-23 | 南京先进激光技术研究院 | Single DMD projection device with white light source |
| CN106043104A (en) * | 2016-07-20 | 2016-10-26 | 上海小糸车灯有限公司 | LiFi-and-DLP-based automotive illumination system and vehicle illumination signal device hereof |
| CN206884861U (en) * | 2017-04-19 | 2018-01-16 | 常州星宇车灯股份有限公司 | A kind of pixel type self-adapted car headlamp control system based on DLP |
Non-Patent Citations (1)
| Title |
|---|
| 姜兆华;吴宾初;潘涌;安博言;骆公序;张伟;: "DMD数字微镜驱动控制系统分析及其应用", 应用激光, no. 03 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111591207A (en) * | 2020-05-14 | 2020-08-28 | 大茂伟瑞柯车灯有限公司 | Control method for realizing projection effect of automobile headlamp based on Pixel-LED |
| CN114056224A (en) * | 2020-08-07 | 2022-02-18 | 比亚迪股份有限公司 | Control method of vehicle headlamp and vehicle |
| CN117432969A (en) * | 2023-12-19 | 2024-01-23 | 保定来福汽车照明集团沧州有限公司 | Dynamic DLP miniature projection lamp for automobile |
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