CN103419709A - AFS (Atomic Fluorescence Spectroscopy) system and method for dimming full-LED (Light-Emitting Diode) matrix - Google Patents

AFS (Atomic Fluorescence Spectroscopy) system and method for dimming full-LED (Light-Emitting Diode) matrix Download PDF

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CN103419709A
CN103419709A CN2013103594755A CN201310359475A CN103419709A CN 103419709 A CN103419709 A CN 103419709A CN 2013103594755 A CN2013103594755 A CN 2013103594755A CN 201310359475 A CN201310359475 A CN 201310359475A CN 103419709 A CN103419709 A CN 103419709A
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led
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姚纪荣
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JIANGSU TONGMING GAOKE AUTOMOBILE ELECTRICAL APPLIANCES Co Ltd
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JIANGSU TONGMING GAOKE AUTOMOBILE ELECTRICAL APPLIANCES Co Ltd
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Abstract

The invention relates to an AFS (Atomic Fluorescence Spectroscopy) system and method for dimming a full-LED (Light-Emitting Diode) matrix. The AFS system comprises a main ECU (Electronic Control Unit), a first power ECU, a second power ECU, a first LED light unit and a second LED light unit, wherein the main ECU is used for realizing acquisition and receiving of traveling signals, calculating the received relevant signals, and respectively outputting control signals to the first power ECU and the second power ECU lastly; and the first LED light unit and the second LED light unit are used for turning on different LED lamp beads according to output power control signals of the first power ECU and the second power ECU respectively, and overlapping to form an entire light shape which is accordant with a light grading standard. According to the AFS system for dimming the full-LED matrix, a high-power LED light source matrix is adopted instead of the conventional mechanical adjusting way, so that self-adaptive illumination can be realized only through power control; and a series of problems caused by the precision and abrasion of a mechanical adjusting device are solved, and a self-adaptive front illumination system with high precision, high efficiency and long service life is realized.

Description

The AFS system and method for a kind of full LED matrix light modulation
Technical field
The invention belongs to the technical field of automotive lighting, in particular, the present invention relates to the AFS system and method for a kind of full LED matrix light modulation.
Background technology
Along with social development and progress, the ambient environment of running car become and become increasingly complex.The speed limit of different roads is different, the illumination on road surface is different, pedestrian's density is different, the environment difference of weather condition, makes the head lamp that only has traditionally dipped beam and two kinds of light illumination modes of distance light, can't meet the growing driving safety needs of people.A kind of adaptive forward lighting systems for this reason, the AFS system is arisen at the historic moment, and this system can be adjusted light-configuration mode automatically according to ambient environment, and larger illumination zone and illumination distances is provided, the illumination dead angle that also can improve head lamp simultaneously.Existing AFS technology all realizes computing by electronic control unit and drives actuating unit to carry out the light adjusting.The regulating mechanism of light adopts stepping motor to carry out the adjusting of above-below direction, and the horizontal steering mechanism that adopts stepping motor to form is realized the left and right directions adjusting of light.Due to the mode that has adopted mechanical adjustment, inevitably there is mechanical wear, thus high for material requirements, also very high to manufacture process requirement; And its service life is generally also not high enough on millions of inferior left and right, degree of regulation, the failure rate caused thus is just very high.
CN102642499A discloses a kind of car headlamp intelligence and has turned to the AFS control system, and described system, based on Fuzzy Neural-network Control, is divided into hardware system and the large class of software system two.Hardware system comprises master controller, actr and sensor assembly.Although described control system realized car headlamp and realized Based Intelligent Control, because the direction of light and angle etc. still need mechanical actuating mechanism to regulate, still inevitably there are wear problem and degree of regulation problem.
Summary of the invention
In order to solve above-mentioned technical matters of the prior art, the object of the present invention is to provide the AFS system and method for a kind of full LED matrix light modulation.
To achieve these goals, the present invention has adopted following technical scheme:
The AFS system of a kind of full LED matrix light modulation, comprise main ECU, the first power ECU, the second power ECU, a LED light group and the 2nd LED light group, it is characterized in that: a described LED light group consists of reflector group, a plurality of LED module group, baffle and PC set of lenses; Similarly, described the 2nd LED light group consists of reflector group, a plurality of LED module group, baffle and PC set of lenses; Described main ECU is used for realizing collection and the reception of train signal, and the coherent signal received is carried out to computing, finally outputs a control signal to respectively the first power ECU and the second power ECU; Described the first power ECU sends the output power signal according to the control signal of main ECU output to each LED lamp pearl in a LED light group; Described the second power ECU is controlled the horsepower output of each LED lamp pearl in the 2nd LED light group according to the control signal of main ECU output; A described LED light group and the 2nd LED light group are lighted different LED lamp pearls according to the output power signal of the first power ECU and the second power ECU respectively, and described different LED lamp pearl produces reflection on described a plurality of reflectors, through baffle and PC set of lenses, light emission is gone out successively again, thereby stack forms the whole light shape that meets the light photometric standards.
Wherein, described LED module group is that the irregular matrix be comprised of plurality of LEDs lamp pearl is arranged, and described matrix is arranged by m horizontal LED lamp pearl and n vertical arrangement LED lamp pearl and formed; Wherein horizontally the irradiating angle of every, LED lamp pearl should be less than (1.5 π)/m, and initial 0 position should be evenly distributed on the position of (2 π)/m; The irradiating angle that vertical arrangement LED lamp pearl is every should be less than (1.2 π)/n, and initial 0 position should be evenly distributed on the position of π/n; The overlapping region of adjacent LED lamp pearl: left and right is less than π/4 sectorial areas, is less than up and down π/8 sectorial areas, the total overlapping region ∑ Δ of light≤2 π; Wherein m and n are integer, and m >=4, n >=3.
Wherein, described main ECU selects the MCU of 9S12 kernel, and model is MC9S12DJ128; Wherein, the CAN signals of vehicles is carried out to difference shaping decoding, then input in main ECU, then described main ECU calculates the angle of illumination, and control signal is transported in described the first power ECU and the second power ECU.
Wherein, described the first power ECU and the second power ECU are selected from the MCU of 9S08 kernel, and model is MC9S08DZ60; Wherein, the control signal of described main ECU enters described the first power ECU and the second power ECU after the shaping of LIN bus interface circuit; Described the first power ECU and the second power ECU carry out light type combination adjustment to a described LED light group and the 2nd LED light group respectively, and export corresponding control level, and then complete the adjustment of irradiating the light type.
Technical scheme of the present invention has following beneficial effect compared to existing technology:
The AFS system of full LED matrix of the present invention light modulation, combine AFS technology and LED light source Matrix Technology, utilized the high-power LED light source matrix, substituted existing mechanical adjustment mode, only by power, controls and just can realize the self adaptation illumination; Thereby solved the precision due to mechanic adjustment unit, the series of problems that wearing and tearing cause, realized the adaptive forward lighting systems of a kind of high precision, high efficiency, high life.
The accompanying drawing explanation
Fig. 1 is the structured flowchart of the AFS system of full LED matrix of the present invention light modulation.
Fig. 2 is the circuit diagram of main ECU in the AFS system of the described full LED matrix of embodiment 1 light modulation.
Fig. 3 is the CAN bus interface circuit figure of embodiment 1 described main ECU.
Fig. 4 is described the first power ECU of embodiment 1 and the described MCU circuit diagram of the second power ECU.
Fig. 5 is described the first power ECU of embodiment 1 and the described LIN bus interface circuit of the second power ECU figure.
Fig. 6 is the blast structural representation of the described LED light group of embodiment 1 and the 2nd LED light group.
The specific embodiment
26S Proteasome Structure and Function below with reference to specific embodiment to the AFS system of full LED matrix of the present invention light modulation is further elaborated, and to help those skilled in the art, inventive concept of the present invention, technical scheme is had to more complete, accurate and deep understanding.
Embodiment 1
As shown in accompanying drawing 1,6, the AFS system of the described full LED matrix of the present embodiment light modulation, comprise main ECU101, the first power ECU104, the second power ECU105, a LED light group 106 and the 2nd LED light group 107; A described LED light group 106 consists of reflector group 20, a plurality of LED module group 10, baffle 30 and PC set of lenses 40 and reflector adapter plate 60, LED mounting bracket 50 and PC lens holder plate 70; Similarly, described the 2nd LED light group 107 is by consisting of reflector group 20, a plurality of LED module group 10, baffle 30 and PC set of lenses 40 and reflector adapter plate 60, LED mounting bracket 50 and PC lens holder plate 70; And described LED module group is that the irregular matrix be comprised of plurality of LEDs lamp pearl is arranged, described matrix is arranged by m horizontal LED lamp pearl and n vertical arrangement LED lamp pearl and is formed; Wherein horizontally the irradiating angle of every, LED lamp pearl should be less than (1.5 π)/m, and initial 0 position should be evenly distributed on the position of (2 π)/m; The irradiating angle that vertical arrangement LED lamp pearl is every should be less than (1.2 π)/n, and initial 0 position should be evenly distributed on the position of π/n; The overlapping region of adjacent LED lamp pearl: left and right is less than π/4 sectorial areas, is less than up and down π/8 sectorial areas, the total overlapping region ∑ Δ of light≤2 π; Wherein m and n are integer, and m >=4, n >=3.Described main ECU101 is used for realizing collection and the reception of train signal, and the coherent signal received is carried out to computing, finally outputs a control signal to respectively the first power ECU104 and the second power ECU105.Described the first power ECU104 sends the output power signal according to the control signal of main ECU output to each LED lamp pearl in a LED light group 106; Described the second power ECU105 is controlled the horsepower output of each LED lamp pearl in the 2nd LED light group 107 according to the control signal of main ECU output.A described LED light group 106 and the 2nd LED light group 107 are lighted different LED lamp pearls according to the output power signal of the first power ECU104 and the second power ECU105 respectively, and described different LED lamp pearl produces reflection on described a plurality of reflectors, through baffle and PC set of lenses, light emission is gone out successively again, thereby stack forms the whole light shape that meets the light photometric standards.
In the present embodiment, described main ECU selects the MCU of 9S12 kernel, and model is MC9S12DJ128, its circuit diagram as Fig. 2 201 as shown in; Wherein, the CAN signals of vehicles is carried out to difference shaping decoding, then, by the main ECU of interface circuit 301 input shown in Fig. 3, then described main ECU calculates the angle of illumination, and control signal is transported in described the first power ECU and the second power ECU.And as shown in Figure 4, described the first power ECU and the second power ECU are selected from the MCU of 9S08 kernel, model is MC9S08DZ60, and its circuit diagram is as shown in 401.Wherein, the control signal of described main ECU enters described the first power ECU and the second power ECU after LIN bus interface circuit 402 shapings as shown in Figure 5; Described the first power ECU and the second power ECU carry out light type combination adjustment to a described LED light group and the 2nd LED light group respectively, and export corresponding control level, and then complete the adjustment of irradiating the light type.
In this enforcement, utilize described AFS system to carry out the method for self adaptation light modulation, comprise the following steps:
1) the first power ECU and the first power ECU power on and do not need main ECU to send instructions, initiatively self check;
2) the first power ECU comprises that with the first power ECU power-on self-test content whether each LED lamp pearl is normal, whether whether normal, the far and near switching of each electronic switch is normal, whether communicate by letter normal;
3), after the first power ECU and the first power ECU power-on self-test, carry out the lamp pearl and drive and to light, the order of lighting be followed successively by under, internally, centering, externally, centering; Its main purpose is to allow the driver carry out visually-perceptible and artificial judgment to system;
When 4) the first power ECU and the second power ECU can not proper communications, the light type controls as dipped beam C mode of operation;
5) main ECU power-on self-test, main measured power ECU1, power ECU2 communications status, faulty condition, mode of operation;
6), when arbitrary power ECU breaks down, alerting signal output should be arranged, but in system, failure-free ECU should work on;
7) when entering the distance light pattern, the horsepower output of the first power ECU, the second power ECU can suitably improve, and the scope of raising should be between 0~100%.
Wherein, main ECU calculates the angle of illumination, and key step has:
1) road surface degree of dip: calculate and identify vehicle suspension front and back coordinate (Xq, Yq) and terminal point coordinate (Xh, Yh) over the ground, slope K;
2) turn condition of vehicle: calculate the central coordinate of circle (A, B) of turn inside diameter circle, the radius R feature;
After completing feature extraction, train signal is sampled, train signal comprises the parameters such as corner acceleration/accel, the speed of a motor vehicle, acceleration/accel, anterior and posterior height sensor, brake and windscreen wiper of vehicle;
Afterwards, calculate respectively horizontal direction (H) illumination angle and vertical direction (V) illumination angle of a LED light group, a LED light group; Then main MCU by these adjustment amounts respectively by being sent to described the first power ECU and the second power ECU after the shaping of LIN bus interface circuit; Described the first power ECU and the second power ECU carry out light type combination adjustment to a described LED light group and the 2nd LED light group respectively, and export corresponding control level, and then complete the adjustment of irradiating the light type.Wherein, the operation frequency of described main MCU is not less than 20 times/second.
For the ordinary skill in the art; specific embodiment just is exemplarily described the present invention by reference to the accompanying drawings; obviously specific implementation of the present invention is not subject to the restrictions described above; as long as adopted the improvement of the various unsubstantialities that method of the present invention design and technical scheme carry out; or without improving, design of the present invention and technical scheme are directly applied to other occasion, all within protection scope of the present invention.

Claims (8)

1. the AFS system of full LED matrix light modulation, comprise main ECU, the first power ECU, the second power ECU, a LED light group and the 2nd LED light group, it is characterized in that:
LED module, baffle and PC set of lenses that a described LED light group is comprised of a plurality of reflectors, plurality of LEDs lamp pearl form; Similarly, described the 2nd LED light group is comprised of a plurality of reflectors, plurality of LEDs lamp pearl LED module, baffle and PC set of lenses form;
Described main ECU is used for realizing collection and the reception of train signal, and the coherent signal received is carried out to computing, finally outputs a control signal to respectively the first power ECU and the second power ECU; Described the first power ECU sends the output power signal according to the control signal of main ECU output to each LED lamp pearl in a LED light group; Described the second power ECU is controlled the horsepower output of each LED lamp pearl in the 2nd LED light group according to the control signal of main ECU output;
A described LED light group and the 2nd LED light group are lighted different LED lamp pearls according to the output power signal of the first power ECU and the second power ECU respectively, and described different LED lamp pearl produces reflection on described a plurality of reflectors, through baffle and PC set of lenses, light emission is gone out successively again, thereby stack forms the whole light shape that meets the light photometric standards.
2. the AFS system of full LED matrix according to claim 1 light modulation is characterized in that: described plurality of LEDs lamp pearl forms irregular matrix arranges, and described matrix arranges that horizontally LED lamp pearl and n vertical arrangement LED lamp pearl form by m; Wherein horizontally the irradiating angle of every, LED lamp pearl should be less than (1.5 π)/m, and initial 0 position should be evenly distributed on the position of (2 π)/m; The irradiating angle that vertical arrangement LED lamp pearl is every should be less than (1.2 π)/n, and initial 0 position should be evenly distributed on the position of π/n; The overlapping region of adjacent LED lamp pearl: left and right is less than π/4 sectorial areas, is less than up and down π/8 sectorial areas, the total overlapping region ∑ Δ of light≤2 π; Wherein m and n are integer, and m >=4, n >=3.
3. the AFS system of full LED matrix according to claim 2 light modulation is characterized in that: described main ECU selects the MCU of 9S12 kernel, and model is MC9S12DJ128; Wherein, the CAN signals of vehicles is carried out to difference shaping decoding, then input in main ECU, then described main ECU calculates the angle of illumination, and control signal is transported in described the first power ECU and the second power ECU.
4. the AFS system of full LED matrix according to claim 2 light modulation, it is characterized in that: described the first power ECU and the second power ECU are selected from the MCU of 9S08 kernel, and model is MC9S08DZ60; Wherein, the control signal of described main ECU enters described the first power ECU and the second power ECU after the shaping of LIN bus interface circuit; Described the first power ECU and the second power ECU carry out light type combination adjustment to a described LED light group and the 2nd LED light group respectively, and export corresponding control level, and then complete the adjustment of irradiating the light type.
5. the method for utilizing the described AFS system of claim 1-4 any one to carry out the self adaptation illumination is characterized in that comprising the following steps:
1) the first power ECU and the first power ECU power on and do not need main ECU to send instructions, initiatively self check;
2) the first power ECU comprises that with the first power ECU power-on self-test content whether each LED lamp pearl is normal, whether whether normal, the far and near switching of each electronic switch is normal, whether communicate by letter normal;
3), after the first power ECU and the first power ECU power-on self-test, carry out the lamp pearl and drive and to light, the order of lighting be followed successively by under, internally, centering, externally, centering; Its main purpose is to allow the driver carry out visually-perceptible and artificial judgment to system;
When 4) the first power ECU and the second power ECU can not proper communications, the light type controls as dipped beam C mode of operation;
5) main ECU power-on self-test, main measured power ECU1, power ECU2 communications status, faulty condition, mode of operation;
6), when arbitrary power ECU breaks down, alerting signal output should be arranged, but in system, failure-free ECU should work on;
7) when entering the distance light pattern, the horsepower output of the first power ECU, the second power ECU can suitably improve, and the scope of raising should be between 0~100%.
6. method according to claim 5 is characterized in that: utilize main ECU to calculate the angle of illumination:
1) road surface degree of dip: calculate and identify vehicle suspension front and back coordinate (Xq, Yq) and terminal point coordinate (Xh, Yh) over the ground, slope K;
2) turn condition of vehicle: calculate the central coordinate of circle (A, B) of turn inside diameter circle, the radius R feature.
7. method according to claim 6, it is characterized in that: utilize main ECU to be sampled to train signal, train signal comprises corner acceleration/accel, the speed of a motor vehicle, acceleration/accel, anterior and posterior height sensor, brake and the windscreen wiper signal of vehicle.
8. method according to claim 7, it is characterized in that: described main ECU calculates respectively horizontal direction (H) illumination angle and vertical direction (V) illumination angle of a LED light group, a LED light group; Then main MCU by these adjustment amounts respectively by being sent to described the first power ECU and the second power ECU after the shaping of LIN bus interface circuit; Described the first power ECU and the second power ECU carry out light type combination adjustment to a described LED light group and the 2nd LED light group respectively, and export corresponding control level, and then complete the adjustment of irradiating the light type.
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CN106004639A (en) * 2016-06-03 2016-10-12 上海小糸车灯有限公司 ADAS-based matrix LED headlamp system with memory function and work method thereof
CN106678744A (en) * 2016-11-10 2017-05-17 浙江吉利控股集团有限公司 Automatic light adjusting mechanism of automobile headlight
CN108569190A (en) * 2017-04-07 2018-09-25 常州星宇车灯股份有限公司 A kind of matrix LED self-adapted car headlamp control system and method
CN108650754A (en) * 2018-07-27 2018-10-12 南京泛联智能科技有限公司 The intelligent LED lamp of Discrete control
CN113074353A (en) * 2021-04-02 2021-07-06 上汽大众汽车有限公司 Matrix headlamp dimming system and light type calibration method
CN114179712A (en) * 2021-12-29 2022-03-15 东风汽车有限公司东风日产乘用车公司 Vehicle headlamp control method, electronic device, and storage medium
WO2024092620A1 (en) * 2022-11-03 2024-05-10 华域视觉科技(上海)有限公司 Adaptive front-lighting control method, and storage medium

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CN106004639A (en) * 2016-06-03 2016-10-12 上海小糸车灯有限公司 ADAS-based matrix LED headlamp system with memory function and work method thereof
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CN108650754A (en) * 2018-07-27 2018-10-12 南京泛联智能科技有限公司 The intelligent LED lamp of Discrete control
CN113074353A (en) * 2021-04-02 2021-07-06 上汽大众汽车有限公司 Matrix headlamp dimming system and light type calibration method
CN114179712A (en) * 2021-12-29 2022-03-15 东风汽车有限公司东风日产乘用车公司 Vehicle headlamp control method, electronic device, and storage medium
CN114179712B (en) * 2021-12-29 2024-03-12 东风汽车有限公司东风日产乘用车公司 Vehicle headlamp control method, electronic device, and storage medium
WO2024092620A1 (en) * 2022-11-03 2024-05-10 华域视觉科技(上海)有限公司 Adaptive front-lighting control method, and storage medium

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