CN204119609U - Matrix LED car headlamp - Google Patents
Matrix LED car headlamp Download PDFInfo
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- CN204119609U CN204119609U CN201420554802.2U CN201420554802U CN204119609U CN 204119609 U CN204119609 U CN 204119609U CN 201420554802 U CN201420554802 U CN 201420554802U CN 204119609 U CN204119609 U CN 204119609U
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Abstract
The utility model is a kind of matrix LED car headlamp.It comprises main control unit, the power management module be connected with described main control unit respectively, CAN module, driver element, matrix L ED lighting unit; Described CAN module is also connected with described power management module, external image recognition system respectively; Described driver element comprises the first drive circuit, the second drive circuit that drive booster circuit, be connected with described driving booster circuit respectively; Described first drive circuit, the second drive circuit are also connected with described main control unit respectively, and described driving booster circuit is connected with described power management module; Described matrix L ED lighting unit comprises the first headlamp circuit, the second headlamp circuit, and described first headlamp circuit is connected with described first drive circuit, main control unit respectively; Described second headlamp circuit is connected with described second drive circuit, main control unit respectively.
Description
Technical field
The utility model relates to a kind of car lamp control system, particularly discloses a kind of matrix LED car headlamp.
Background technology
The headlamp of current automobile is divided into distance light+dipped beam, and distance light is in order to driver better identifies the road conditions of vehicle front on a highway, but its irradiates and also has a strong impact on oncoming drivers's sight line, is easy to cause traffic accident.Although current car headlamp all adopts the mode of dipped beam+distance light to irradiate, dipped beam is switched to by driver when having vehicle to come over there, although dipped headlights can not impact opponent vehicle driver, but it has irradiation distance not far, the defect that irradiating width is narrower, and in fact, a lot of driver does not have 100% and consciously initiatively switches to dipped headlights when meeting, this is very large on vehicle safe driving impact.
Summary of the invention
The purpose of this utility model is to solve problems of the prior art, a kind of can realization is provided dynamically to close the irradiation light being positioned at self LED of the traveling-position of opponent vehicle, make it can not cause blurred vision to the driver of meeting vehicle, and other regions still can keep the matrix LED car headlamp of irradiation distance far away and wider range of exposures.
The utility model is achieved in that a kind of matrix LED car headlamp, it is characterized in that: comprise main control unit, the power management module be connected with described main control unit respectively, CAN module, driver element, matrix L ED lighting unit; Described CAN module is also connected with described power management module, external image recognition system respectively; Described driver element comprises the first drive circuit, the second drive circuit that drive booster circuit, be connected with described driving booster circuit respectively; Described first drive circuit, the second drive circuit are also connected with described main control unit respectively, and described driving booster circuit is connected with described power management module; Described matrix L ED lighting unit comprises the first headlamp circuit, the second headlamp circuit, and described first headlamp circuit is connected with described first drive circuit, main control unit respectively; Described second headlamp circuit is connected with described second drive circuit, main control unit respectively.
The described driving booster circuit of described driver element comprises the control circuit containing the 4th control chip U4, the input filter circuit be connected with described control circuit respectively, first passage booster circuit, second channel booster circuit, output filter circuit; Described input filter circuit is connected with described first passage booster circuit, second channel booster circuit respectively; Described output filter circuit is connected with described first passage booster circuit, second channel booster circuit respectively.
Described first drive circuit, the second drive circuit are respectively BUCK reduction voltage circuit.
Described driving booster circuit comprises, 4th control chip U4, 3rd resistance R3, 4th resistance R4, 5th resistance R5, 6th resistance R6, 7th resistance R7, 8th resistance R8, 9th resistance R9 the tenth resistance R10, 11 resistance R11, second resistance R12, 13 resistance R13, 14 resistance R14, 15 resistance R15, 16 resistance R16, 17 resistance R17, 18 resistance R18, 19 resistance R19, 20 resistance R20, 21 resistance R21, 22 resistance R22, 11 electric capacity C11, 12 electric capacity C12, 13 electric capacity C13, 14 electric capacity C14, 15 electric capacity C15, 16 electric capacity C16, 17 electric capacity C17, 18 electric capacity C18, 19 electric capacity C19, 20 electric capacity C20, 21 electric capacity C21, 22 electric capacity C22, 23 electric capacity C23, 24 electric capacity C24, 25 electric capacity C25, 26 electric capacity C26, 27 electric capacity C27, 28 electric capacity C28, 29 electric capacity C29, 30 electric capacity C30, 31 electric capacity C31, 32 electric capacity C32, 33 electric capacity C33, 34 electric capacity C34, 35 electric capacity C35, 36 electric capacity C36, 37 electric capacity C37, 38 electric capacity C38, 39 electric capacity C39, 40 electric capacity C40, 41 electric capacity C41, 42 electric capacity C42, 43 electric capacity C43, 44 electric capacity C44, first voltage stabilizing didoe Z1, TVS pipe D3, first switching tube Q1, second switch pipe Q2, 3rd switching tube Q3, second Schottky diode D2, 4th Schottky diode D4, first inductance L 1, second inductance L 2, 3rd inductance L 3, for connecting the power input KL30 of described power management module, for respectively with described first drive circuit, the voltage output end that second drive circuit is connected,
Described power input KL30 is connected with one end of described 3rd resistance R3, one end of the 4th resistance R4, one end of the 11 electric capacity C11, one end of the 12 electric capacity C12, one end of the 13 electric capacity C13, one end of inductance L 1 successively; The connected rear ground connection of the other end of the other end of described 11 electric capacity C11, the other end of the 12 electric capacity C12, the 13 electric capacity C13; The grid of the negative pole second switch pipe Q2 of the other end of described 4th resistance R4, one end of the 20 electric capacity C20, the first voltage stabilizing didoe Z1 is connected; The connected rear ground connection of source electrode of the other end of described 20 electric capacity C20, the positive pole of the first voltage stabilizing didoe Z1, second switch pipe Q2; The other end of described 3rd resistance R3 is connected with one end of described TVS pipe D3, ground connection after the other end of described TVS pipe D3, the drain electrode of second switch pipe Q2 are connected;
One end of one end of one end of one end of the other end of described first inductance L 1, one end of the 14 electric capacity C14, the 15 electric capacity C15, one end of the 16 electric capacity C16, one end of the 17 electric capacity C17, one end of the 18 electric capacity C18 and the second inductance L 2, one end of the 3rd inductance L 3, the 24 electric capacity C24, one end of the 23 electric capacity C23, the 22 electric capacity C22, one end of the 21 electric capacity C21, one end of the 6th resistance R6 are connected; The other end of the other end of the other end of described 14 electric capacity C14, the other end of the 15 electric capacity C15, the 16 electric capacity C16, the other end of the 17 electric capacity C17, the 18 electric capacity C18 is connected and connects afterwards; Ground connection after the other end of the other end of described 24 electric capacity C24, the other end of the 23 electric capacity C23, the 22 electric capacity C22, the other end of the 21 electric capacity C21 are connected; The other end of described 6th resistance R6, one end of the 26 electric capacity C26, one end of the 25 electric capacity C25, one end of the 8th resistance R8 are connected and are connected into the VCC pin of described 4th control chip U4; Ground connection after the other end of described 25 electric capacity C25, the other end of the 26 electric capacity C26 are connected; The other end of described 8th resistance R8, one end of the tenth resistance R10, one end of the 33 electric capacity C33 are connected and are connected into the RUN pin of described 4th control chip U4; The other end ground connection of described tenth resistance R10; Ground connection after one end of the other end of described 33 electric capacity C33, one end of the 11 resistance R11, the 13 resistance R13, one end of the 36 electric capacity C36 are connected; The other end of described 11 resistance R11 is connected into the SLOP pin of described 4th control chip U4; The other end of described 13 resistance R13 is connected with the Rset pin of described 4th control chip U4, DCL pin, DELAY pin respectively; The other end of described 36 electric capacity C36 is connected with the GBIAS pin of described 4th control chip U4, GBIAS1 pin, GBIAS2 pin respectively;
The positive pole of the other end of described second inductance L 2, the drain electrode of the 3rd switching tube Q3, the second Schottky diode D2, one end of the 19 electric capacity C19 are connected; One end of the grid of described 3rd switching tube Q3, one end of the 16 resistance R16, the 38 electric capacity C38 is connected; The other end of described 16 resistance R16 is connected with the BGATE2 pin of described 4th control chip U4; The other end ground connection of described 38 electric capacity C38; One end of the source electrode of described 3rd switching tube Q3, one end of the 20 resistance R20, the 19 resistance R19, one end of the 18 resistance R18 are connected; The SENSE2+ pin of the other end of described 18 resistance R18, one end of the 44 electric capacity C44, the 4th control chip U4 is connected; Ground connection after the described other end of the 20 resistance R20, the other end of the 19 resistance R19 are connected and being connected with the other end of described 44 electric capacity C44, the SENSE2-pin of the 4th control chip U4;
The other end of described 19 electric capacity C19 is connected with one end of described 5th resistance R5, the other end of described 5th resistance R5, the negative pole of the second Schottky diode D2, the negative pole of the 4th Schottky diode D4, one end of 27 electric capacity C27, voltage output end, one end of 28 electric capacity C28, one end of 9th resistance R9, one end of 30 electric capacity C30, one end of 32 electric capacity C32, one end of 34 electric capacity C34, the electric capacity C37 of the 37, one end of 39 electric capacity C39, one end of 41 electric capacity C41, one end of 21 resistance R21 is connected, ground connection after the other end of the other end of the other end of the other end of described 28 electric capacity C28, the other end of the 27 electric capacity C27, the 30 electric capacity C30, the other end of the 32 electric capacity C32, the 34 electric capacity C34, the other end of the 37 electric capacity C37, the 39 electric capacity C39, the other end of the 41 electric capacity C41 are connected, the other end of the 21 resistance R21, one end of the 22 resistance R22 are connected into the FB pin of described 4th control chip U4 after being connected, the other end ground connection of described R22,
The other end of described 9th resistance R9 is connected with one end of the 29 electric capacity C29; The other end of the other end of described 29 electric capacity C29, the positive pole of the 4th Schottky diode D4, the 3rd inductance L 3, the drain electrode of the first switching tube Q1 are connected;
One end of the grid of described first switching tube Q1, one end of the 31 electric capacity C31, the 7th resistance R7 is connected; The other end ground connection of described 31 electric capacity C31; The other end of described 7th resistance R7 is connected with the BGATE1 pin of described 4th control chip U4;
One end of the source electrode of described first switching tube Q1, one end of the 15 resistance R15, the 14 resistance R14, one end of the 12 resistance R12 are connected; The SENSEL1+ pin of the other end of described 12 resistance R12, one end of the 35 electric capacity C35, the 4th control chip U4 is connected; Ground connection after the described other end of the 15 resistance R15, the other end of the 14 resistance R14 are connected and being connected with the other end of described 35 electric capacity C35, the SENSEL1-pin of the 4th control chip U4.
Be respectively equipped with the LED of 4 ~ 8 groups of parallel connections in described first headlamp circuit, the second headlamp circuit, often organize LED and be connected with described main control unit respectively by a control end.
Described first drive circuit comprises the 5th control chip U5, 45 electric capacity C45, 47 electric capacity C47, 49 electric capacity C49, 51 electric capacity C51, 53 electric capacity C53, 54 electric capacity C54, 23 resistance R23, 25 resistance R25, 27 resistance R27, 29 resistance R29, 30 resistance R30, 5th Schottky diode D5, first driving voltage input, for connecting the LED1+ end of described first headlamp circuit, LED1-holds,
Described first driving voltage input is connected with one end of described 47 electric capacity C47, one end of the 23 resistance R23, the VIN pin of the 5th control chip U5 respectively; The other end ground connection of described 47 electric capacity C47; The other end of described 23 resistance R23 is connected with the TON pin of described 5th control chip U5;
The EN pin of described 5th control chip U5 is connected with described main control unit; The VCC pin of described 5th control chip U5 is connected with one end of described 51 electric capacity C51, ground connection after the other end of described 51 electric capacity C51 is connected with the EP pin of described 5th control chip U5;
One end of one end of SW pin the 45 electric capacity C45 of described 5th control chip U5, the negative pole of the 5th Schottky diode D5, the 49 electric capacity C49, one end of the 4th inductance L 4 are connected; The other end of described 45 electric capacity C45 is connected into the BOOT pin of described 5th control chip U5 by the 25 resistance R25; The other end of described 49 electric capacity C49 is connected with one end of described 27 resistance R27, ground connection after the other end of described 27 resistance R27 is connected with the positive pole of described 5th Schottky diode D5;
The other end of described 4th inductance L 4, one end of the 53 electric capacity C53, one end of the 54 electric capacity C54 are connected and are connected into described LED1+ and hold;
Described LED1-end, the other end of the 54 electric capacity C54, the other end of the 53 electric capacity C53, one end of the 30 resistance R30, one end of the 29 resistance R29 are connected and are connected into the CS pin of described 5th control chip U5; Ground connection after the other end of described 30 resistance R30, the other end of the 29 resistance R29 are connected.
Described second drive circuit comprises the 6th control chip U6, 46 electric capacity C46, 48 electric capacity C48, 50 electric capacity C50, 52 electric capacity C52, 55 electric capacity C55, 56 electric capacity C56, 24 resistance R24, 26 resistance R26, 28 resistance R28, 31 resistance R31, 32 resistance R32, 6th Schottky diode D6, second driving voltage input, for connecting the LED2+ end of described second headlamp circuit, LED2-holds,
Described second driving voltage input is connected with one end of described 48 electric capacity C48, one end of the 24 resistance R24, the VIN pin of the 6th control chip U6 respectively; The other end ground connection of described 48 electric capacity C48; The other end of described 24 resistance R24 is connected with the TON pin of described 6th control chip U6;
The EN pin of described 6th control chip U6 is connected with described main control unit; The VCC pin of described 6th control chip U6 is connected with one end of described 52 electric capacity C52, ground connection after the other end of described 52 electric capacity C52 is connected with the EP pin of described 6th control chip U6;
One end of the negative pole of the SW pin of described 6th control chip U6, one end of the 46 electric capacity C46, the 6th Schottky diode D6, one end of the 50 electric capacity C50, the 5th inductance L 5 is connected; The other end of described 46 electric capacity C46 is connected into the BOOT pin of described 6th control chip U6 by the 26 resistance R26; The other end of described 50 electric capacity C50 is connected with one end of described 28 resistance R28, ground connection after the other end of described 28 resistance R28 is connected with the positive pole of described 6th Schottky diode D6;
The other end of described 5th inductance L 5, one end of the 55 electric capacity C55, one end of the 56 electric capacity C56 are connected and are connected into described LED2+ and hold;
Described LED2-end, the other end of the 56 electric capacity C56, the other end of the 55 electric capacity C55, one end of the 32 resistance R32, one end of the 31 resistance R31 are connected and are connected into the CS pin of described 6th control chip U6; Ground connection after the other end of described 31 resistance R31, the other end of the 32 resistance R32 are connected.
The beneficial effects of the utility model are: the instruction being received external image recognition system by CAN module, and by main control unit, matrix L ED lighting unit is controlled, real-time automatic switchover, and only irradiation is closed to the region having vehicle to travel, so both can not cause blurred vision to meeting vehicle driver, and this car pilot's line of vision is better.
Accompanying drawing explanation
Fig. 1 is the utility model frame structure schematic diagram.
Fig. 2 is the electrical block diagram of the utility model main control unit.
Fig. 3 is the electrical block diagram of CAN module.
Fig. 4 is the electrical block diagram of power management module.
Fig. 5 is the structural representation of the driving booster circuit of driver element.
Fig. 6 is the electrical block diagram of the first drive circuit of driver element.
Fig. 7 is the electrical block diagram of the second drive circuit of driver element.
Fig. 8 is the electrical block diagram of the first headlamp circuit of matrix L ED lighting unit.
Fig. 9 is the electrical block diagram of the second headlamp circuit of matrix L ED lighting unit.
Embodiment
According to Fig. 1 ~ Fig. 9, the utility model comprises main control unit, the power management module be connected with described main control unit respectively, CAN module, driver element, matrix L ED lighting unit; Described CAN module is also connected with described power management module, external image recognition system respectively; Described driver element comprises the first drive circuit, the second drive circuit that drive booster circuit, be connected with described driving booster circuit respectively; Described first drive circuit, the second drive circuit are also connected with described main control unit respectively, and described driving booster circuit is connected with described power management module; Described matrix L ED lighting unit comprises the first headlamp circuit, the second headlamp circuit, and described first headlamp circuit is connected with described first drive circuit, main control unit respectively; Described second headlamp circuit is connected with described second drive circuit, main control unit respectively.Described first drive circuit, the second drive circuit are respectively BUCK reduction voltage circuit.
The described driving booster circuit of described driver element comprises the control circuit containing the 4th control chip U4, the input filter circuit be connected with described control circuit respectively, first passage booster circuit, second channel booster circuit, output filter circuit; Described input filter circuit is connected with described first passage booster circuit, second channel booster circuit respectively; Described output filter circuit is connected with described first passage booster circuit, second channel booster circuit respectively.
According to Fig. 5 composition graphs 1, described driving booster circuit comprises, 4th control chip U4, 3rd resistance R3, 4th resistance R4, 5th resistance R5, 6th resistance R6, 7th resistance R7, 8th resistance R8, 9th resistance R9 the tenth resistance R10, 11 resistance R11, second resistance R12, 13 resistance R13, 14 resistance R14, 15 resistance R15, 16 resistance R16, 17 resistance R17, 18 resistance R18, 19 resistance R19, 20 resistance R20, 21 resistance R21, 22 resistance R22, 11 electric capacity C11, 12 electric capacity C12, 13 electric capacity C13, 14 electric capacity C14, 15 electric capacity C15, 16 electric capacity C16, 17 electric capacity C17, 18 electric capacity C18, 19 electric capacity C19, 20 electric capacity C20, 21 electric capacity C21, 22 electric capacity C22, 23 electric capacity C23, 24 electric capacity C24, 25 electric capacity C25, 26 electric capacity C26, 27 electric capacity C27, 28 electric capacity C28, 29 electric capacity C29, 30 electric capacity C30, 31 electric capacity C31, 32 electric capacity C32, 33 electric capacity C33, 34 electric capacity C34, 35 electric capacity C35, 36 electric capacity C36, 37 electric capacity C37, 38 electric capacity C38, 39 electric capacity C39, 40 electric capacity C40, 41 electric capacity C41, 42 electric capacity C42, 43 electric capacity C43, 44 electric capacity C44, first voltage stabilizing didoe Z1, TVS pipe D3, first switching tube Q1, second switch pipe Q2, 3rd switching tube Q3, second Schottky diode D2, 4th Schottky diode D4, first inductance L 1, second inductance L 2, 3rd inductance L 3, for connecting the power input KL30 of described power management module, for respectively with described first drive circuit, the voltage output end that second drive circuit is connected.
Described power input KL30 is connected with one end of described 3rd resistance R3, one end of the 4th resistance R4, one end of the 11 electric capacity C11, one end of the 12 electric capacity C12, one end of the 13 electric capacity C13, one end of inductance L 1 successively; The connected rear ground connection of the other end of the other end of described 11 electric capacity C11, the other end of the 12 electric capacity C12, the 13 electric capacity C13; The grid of the negative pole second switch pipe Q2 of the other end of described 4th resistance R4, one end of the 20 electric capacity C20, the first voltage stabilizing didoe Z1 is connected; The connected rear ground connection of source electrode of the other end of described 20 electric capacity C20, the positive pole of the first voltage stabilizing didoe Z1, second switch pipe Q2; The other end of described 3rd resistance R3 is connected with one end of described TVS pipe D3, ground connection after the other end of described TVS pipe D3, the drain electrode of second switch pipe Q2 are connected.
One end of one end of one end of one end of the other end of described first inductance L 1, one end of the 14 electric capacity C14, the 15 electric capacity C15, one end of the 16 electric capacity C16, one end of the 17 electric capacity C17, one end of the 18 electric capacity C18 and the second inductance L 2, one end of the 3rd inductance L 3, the 24 electric capacity C24, one end of the 23 electric capacity C23, the 22 electric capacity C22, one end of the 21 electric capacity C21, one end of the 6th resistance R6 are connected; The other end of the other end of the other end of described 14 electric capacity C14, the other end of the 15 electric capacity C15, the 16 electric capacity C16, the other end of the 17 electric capacity C17, the 18 electric capacity C18 is connected and connects afterwards; Ground connection after the other end of the other end of described 24 electric capacity C24, the other end of the 23 electric capacity C23, the 22 electric capacity C22, the other end of the 21 electric capacity C21 are connected; The other end of described 6th resistance R6, one end of the 26 electric capacity C26, one end of the 25 electric capacity C25, one end of the 8th resistance R8 are connected and are connected into the VCC pin of described 4th control chip U4; Ground connection after the other end of described 25 electric capacity C25, the other end of the 26 electric capacity C26 are connected; The other end of described 8th resistance R8, one end of the tenth resistance R10, one end of the 33 electric capacity C33 are connected and are connected into the RUN pin of described 4th control chip U4; The other end ground connection of described tenth resistance R10; Ground connection after one end of the other end of described 33 electric capacity C33, one end of the 11 resistance R11, the 13 resistance R13, one end of the 36 electric capacity C36 are connected; The other end of described 11 resistance R11 is connected into the SLOP pin of described 4th control chip U4; The other end of described 13 resistance R13 is connected with the Rset pin of described 4th control chip U4, DCL pin, DELAY pin respectively; The other end of described 36 electric capacity C36 is connected with the GBIAS pin of described 4th control chip U4, GBIAS1 pin, GBIAS2 pin respectively.
The positive pole of the other end of described second inductance L 2, the drain electrode of the 3rd switching tube Q3, the second Schottky diode D2, one end of the 19 electric capacity C19 are connected; One end of the grid of described 3rd switching tube Q3, one end of the 16 resistance R16, the 38 electric capacity C38 is connected; The other end of described 16 resistance R16 is connected with the BGATE2 pin of described 4th control chip U4; The other end ground connection of described 38 electric capacity C38; One end of the source electrode of described 3rd switching tube Q3, one end of the 20 resistance R20, the 19 resistance R19, one end of the 18 resistance R18 are connected; The SENSE2+ pin of the other end of described 18 resistance R18, one end of the 44 electric capacity C44, the 4th control chip U4 is connected; Ground connection after the described other end of the 20 resistance R20, the other end of the 19 resistance R19 are connected and being connected with the other end of described 44 electric capacity C44, the SENSE2-pin of the 4th control chip U4.
The other end of described 19 electric capacity C19 is connected with one end of described 5th resistance R5, the other end of described 5th resistance R5, the negative pole of the second Schottky diode D2, the negative pole of the 4th Schottky diode D4, one end of 27 electric capacity C27, voltage output end, one end of 28 electric capacity C28, one end of 9th resistance R9, one end of 30 electric capacity C30, one end of 32 electric capacity C32, one end of 34 electric capacity C34, the electric capacity C37 of the 37, one end of 39 electric capacity C39, one end of 41 electric capacity C41, one end of 21 resistance R21 is connected, ground connection after the other end of the other end of the other end of the other end of described 28 electric capacity C28, the other end of the 27 electric capacity C27, the 30 electric capacity C30, the other end of the 32 electric capacity C32, the 34 electric capacity C34, the other end of the 37 electric capacity C37, the 39 electric capacity C39, the other end of the 41 electric capacity C41 are connected, the other end of the 21 resistance R21, one end of the 22 resistance R22 are connected into the FB pin of described 4th control chip U4 after being connected, the other end ground connection of described R22.
The other end of described 9th resistance R9 is connected with one end of the 29 electric capacity C29; The other end of the other end of described 29 electric capacity C29, the positive pole of the 4th Schottky diode D4, the 3rd inductance L 3, the drain electrode of the first switching tube Q1 are connected;
One end of the grid of described first switching tube Q1, one end of the 31 electric capacity C31, the 7th resistance R7 is connected; The other end ground connection of described 31 electric capacity C31; The other end of described 7th resistance R7 is connected with the BGATE1 pin of described 4th control chip U4;
One end of the source electrode of described first switching tube Q1, one end of the 15 resistance R15, the 14 resistance R14, one end of the 12 resistance R12 are connected; The SENSEL1+ pin of the other end of described 12 resistance R12, one end of the 35 electric capacity C35, the 4th control chip U4 is connected; Ground connection after the described other end of the 15 resistance R15, the other end of the 14 resistance R14 are connected and being connected with the other end of described 35 electric capacity C35, the SENSEL1-pin of the 4th control chip U4.
According to Fig. 6 composition graphs 1, described first drive circuit comprise the 5th control chip U5, the 45 electric capacity C45, the 47 electric capacity C47, the 49 electric capacity C49, the 51 electric capacity C51, the 53 electric capacity C53, the 54 electric capacity C54, the 23 resistance R23, the 25 resistance R25, the 27 resistance R27, the 29 resistance R29, the 30 resistance R30, the 5th Schottky diode D5, the first driving voltage input, for connect described first headlamp circuit LED1+ end, LED1-end.
Described first driving voltage input is connected with one end of described 47 electric capacity C47, one end of the 23 resistance R23, the VIN pin of the 5th control chip U5 respectively; The other end ground connection of described 47 electric capacity C47; The other end of described 23 resistance R23 is connected with the TON pin of described 5th control chip U5;
The EN pin of described 5th control chip U5 is connected with described main control unit; The VCC pin of described 5th control chip U5 is connected with one end of described 51 electric capacity C51, ground connection after the other end of described 51 electric capacity C51 is connected with the EP pin of described 5th control chip U5;
One end of one end of SW pin the 45 electric capacity C45 of described 5th control chip U5, the negative pole of the 5th Schottky diode D5, the 49 electric capacity C49, one end of the 4th inductance L 4 are connected; The other end of described 45 electric capacity C45 is connected into the BOOT pin of described 5th control chip U5 by the 25 resistance R25; The other end of described 49 electric capacity C49 is connected with one end of described 27 resistance R27, ground connection after the other end of described 27 resistance R27 is connected with the positive pole of described 5th Schottky diode D5;
The other end of described 4th inductance L 4, one end of the 53 electric capacity C53, one end of the 54 electric capacity C54 are connected and are connected into described LED1+ and hold;
Described LED1-end, the other end of the 54 electric capacity C54, the other end of the 53 electric capacity C53, one end of the 30 resistance R30, one end of the 29 resistance R29 are connected and are connected into the CS pin of described 5th control chip U5; Ground connection after the other end of described 30 resistance R30, the other end of the 29 resistance R29 are connected.
According to Fig. 7 composition graphs 1, described second drive circuit comprise the 6th control chip U6, the 46 electric capacity C46, the 48 electric capacity C48, the 50 electric capacity C50, the 52 electric capacity C52, the 55 electric capacity C55, the 56 electric capacity C56, the 24 resistance R24, the 26 resistance R26, the 28 resistance R28, the 31 resistance R31, the 32 resistance R32, the 6th Schottky diode D6, the second driving voltage input, for connect described second headlamp circuit LED2+ end, LED2-end;
Described second driving voltage input is connected with one end of described 48 electric capacity C48, one end of the 24 resistance R24, the VIN pin of the 6th control chip U6 respectively; The other end ground connection of described 48 electric capacity C48; The other end of described 24 resistance R24 is connected with the TON pin of described 6th control chip U6;
The EN pin of described 6th control chip U6 is connected with described main control unit; The VCC pin of described 6th control chip U6 is connected with one end of described 52 electric capacity C52, ground connection after the other end of described 52 electric capacity C52 is connected with the EP pin of described 6th control chip U6;
One end of the negative pole of the SW pin of described 6th control chip U6, one end of the 46 electric capacity C46, the 6th Schottky diode D6, one end of the 50 electric capacity C50, the 5th inductance L 5 is connected; The other end of described 46 electric capacity C46 is connected into the BOOT pin of described 6th control chip U6 by the 26 resistance R26; The other end of described 50 electric capacity C50 is connected with one end of described 28 resistance R28, ground connection after the other end of described 28 resistance R28 is connected with the positive pole of described 6th Schottky diode D6;
The other end of described 5th inductance L 5, one end of the 55 electric capacity C55, one end of the 56 electric capacity C56 are connected and are connected into described LED2+ and hold;
Described LED2-end, the other end of the 56 electric capacity C56, the other end of the 55 electric capacity C55, one end of the 32 resistance R32, one end of the 31 resistance R31 are connected and are connected into the CS pin of described 6th control chip U6; Ground connection after the other end of described 31 resistance R31, the other end of the 32 resistance R32 are connected.
According to figure Fig. 8, Fig. 9 composition graphs 1, in described first headlamp circuit, the second headlamp circuit, be respectively equipped with the LED of 4 ~ 8 groups of parallel connections, often organize LED and be connected with described main control unit respectively by a control end.
According to Fig. 2, composition graphs 1, described main control unit comprises the first control chip U1, and described first control chip U1 is provided with and comprises: for connecting PTE5/SDA/MISO pin, PTE6/TxD2/TXCAN pin, the PTE7/RxD2/RXCAN pin of described CAN module; For connecting the RESET pin of described power management module; For connecting the PTF2/TPM1CLK/SCL pin of described first drive circuit; For connecting the PTF3/TPM2CLK/SDA pin of described second drive circuit.
According to Fig. 3 composition graphs 1, described CAN module comprises: the second control chip U2, and described second control chip U2 is provided with and comprises the TXD pin be connected with described PTE6/TxD2/TXCAN pin, the RXD pin be connected with described PTE7/RxD2/RXCAN pin, the STB pin that is connected with described PTE5/SDA/MISO pin; For the CANH pin, the CANL pin that are connected with described external image recognition system respectively.
According to Fig. 4 composition graphs 1, described power management module comprises: the 3rd control chip U3, the electric power management circuit be connected with described 3rd control chip U3, and described 3rd control chip U3 comprises I pin, Q pin, D pin, RO pin; The battery power end of described electric power management circuit is connected with the power input KL30 of described driver element; The RO end of described 3rd control chip U3 is connected with the RESET pin of the first control chip U1 of described main control unit.
The S9S08DZ60F2MLF single-chip microcomputer that first control chip of main control unit described in the utility model can adopt Freescale company to produce; The TJA1042T CAN interface chip that second control chip U2 of described CAN module can adopt En Zhi Pu company to produce; The TLE42754D LDO power management chip that 3rd control chip U3 of described power management module can adopt company of Infineon to produce; The LTC3782A power management chip that 4th control chip U4 of described driving booster circuit can adopt Linear Tech to produce; 5th control chip U5 of described first drive circuit, the second drive circuit, the 6th control chip U6 can adopt the A6213KLJRT LED drive chip of being produced by Allegro Micro company.In the utility model, this body structure of described external image recognition system is the system that existing vehicle body carries, and can judge self LED signal in the traveling-position region being positioned at opponent vehicle.
Main working process of the present utility model is as follows: described external image recognition system obtains self the LED signal being positioned at the traveling-position region of opponent vehicle, sends signal by the mode of the CAN message of CAN to described CAN module.The utility model is for 8 groups of LED i.e. 16 LED: in 8 data bytes in CAN message the first two byte totally 16 everybody represent 16 LED of native system in order, each value being is that 0 interval scale LED closes, 1 represents LED lights, image identification system is by identifying the position of front vehicles, judge the LED needing to close, CAN module is transferred to by CAN, after CAN module carries out level translation to the CAN message received, by the CAN message signal transmission after conversion to main control unit, main control unit is by after resolving CAN message, by delivery outlet to matrix L ED lighting unit control corresponding LED bright/close.The effect of described booster driving circuit is the burning voltage of 40V by astable for vehicle-mounted 12V photovoltaic conversion, for the first drive circuit and the second drive circuit provide desired operating voltage.The course of work is as follows: this circuit is divided into two passage boostings, the switching tube of two passages replaces Push And Release, 4th control chip U4 controls the first switching tube Q1 conducting of first passage, three inductance L 3 of loop to first passage is charged, 4th control chip U4 monitors the electric current of charge circuit simultaneously by SENSEL1+ pin and SENSEL1-pin, when being charged to arrived electric current, the first switching tube Q1 that 4th control chip U4 controls first passage closes, now the 3rd inductance L 3 of first passage flows through Schottky diode D4 and discharges to output loop, simultaneously, second inductance L 2 of the 3rd switching tube Q3 conducting to second channel that 4th control chip U4 controls second channel is charged, 4th control chip U4 monitors the electric current of charge circuit simultaneously by SENSE2+ pin and SENSE2-pin, such two channel circuit alternation switches, electric current is pushed to export, 11 resistance R11 of control circuit, 12 resistance R12 monitors the voltage exported, feed back to the 4th control chip U4, 4th control chip U4 adjusts the duty cycle of switching of two booster circuits according to the situation of output voltage, to guarantee to export constant voltage.First drive circuit and the second drive circuit drive the first headlamp circuit and the second headlamp circuit respectively, their effect is the desired constant current of LED by 40V photovoltaic conversion stable for booster circuit, they are BUCK reduction voltage circuit respectively, job step is following (because the operation principle of two drive circuits is consistent, so the first drive circuit is example): its built-in switching tube of the 5th control chip U5 of the first drive circuit, during switching tube conducting, the SW pin of the 5th control chip U5 exports high level, to the 4th inductance L 4, LED load, 29 resistance R29//the 30 resistance R30, the loop charging formed to ground, charging process loop current rises, 5th control chip U5 is simultaneously by the electric current of CS pin measure loop, when reaching set point, 5th control chip U5 closing switch pipe, the SW pin of the 5th control chip U5 does not export, owing to there is electric charge in the 4th inductance L 4 in above-mentioned loop, will through LED load, 29 resistance R29//the 30 resistance R30, the loop electric discharge that 5th Schottky diode D5 is formed, the electric current of discharge process inductance declines, the electric current that so the 5th control chip U5 detects is declining, after dropping to threshold value, 5th control chip U5 controls built-in switching tube conducting again, the SW pin of the 5th control chip U5 exports high level, continue as the 4th inductance L 4, LED load, 29 resistance R29//the 30 resistance R30, the loop charging formed to ground.So repeatedly, constant electric current can be exported.First headlamp circuit and the second headlamp circuit are driven by the first drive circuit and the second drive circuit respectively, its each LED switching tube in parallel, and LED in parallel with it during switching tube conducting is shorted, so corresponding LED will close.
Claims (7)
1. a matrix LED car headlamp, is characterized in that: comprise main control unit, the power management module be connected with described main control unit respectively, CAN module, driver element, matrix L ED lighting unit; Described CAN module is also connected with described power management module, external image recognition system respectively; Described driver element comprises the first drive circuit, the second drive circuit that drive booster circuit, be connected with described driving booster circuit respectively; Described first drive circuit, the second drive circuit are also connected with described main control unit respectively, and described driving booster circuit is connected with described power management module; Described matrix L ED lighting unit comprises the first headlamp circuit, the second headlamp circuit, and described first headlamp circuit is connected with described first drive circuit, main control unit respectively; Described second headlamp circuit is connected with described second drive circuit, main control unit respectively.
2. according to the matrix LED car headlamp described in claim 1, it is characterized in that: the described driving booster circuit of described driver element comprises the control circuit containing the 4th control chip U4, the input filter circuit be connected with described control circuit respectively, first passage booster circuit, second channel booster circuit, output filter circuit; Described input filter circuit is connected with described first passage booster circuit, second channel booster circuit respectively; Described output filter circuit is connected with described first passage booster circuit, second channel booster circuit respectively.
3. matrix LED car headlamp according to claim 1, is characterized in that: described first drive circuit, the second drive circuit are respectively BUCK reduction voltage circuit.
4. matrix LED car headlamp according to claim 1 and 2, is characterized in that: described driving booster circuit comprises, 4th control chip U4, 3rd resistance R3, 4th resistance R4, 5th resistance R5, 6th resistance R6, 7th resistance R7, 8th resistance R8, 9th resistance R9 the tenth resistance R10, 11 resistance R11, second resistance R12, 13 resistance R13, 14 resistance R14, 15 resistance R15, 16 resistance R16, 17 resistance R17, 18 resistance R18, 19 resistance R19, 20 resistance R20, 21 resistance R21, 22 resistance R22, 11 electric capacity C11, 12 electric capacity C12, 13 electric capacity C13, 14 electric capacity C14, 15 electric capacity C15, 16 electric capacity C16, 17 electric capacity C17, 18 electric capacity C18, 19 electric capacity C19, 20 electric capacity C20, 21 electric capacity C21, 22 electric capacity C22, 23 electric capacity C23, 24 electric capacity C24, 25 electric capacity C25, 26 electric capacity C26, 27 electric capacity C27, 28 electric capacity C28, 29 electric capacity C29, 30 electric capacity C30, 31 electric capacity C31, 32 electric capacity C32, 33 electric capacity C33, 34 electric capacity C34, 35 electric capacity C35, 36 electric capacity C36, 37 electric capacity C37, 38 electric capacity C38, 39 electric capacity C39, 40 electric capacity C40, 41 electric capacity C41, 42 electric capacity C42, 43 electric capacity C43, 44 electric capacity C44, first voltage stabilizing didoe Z1, TVS pipe D3, first switching tube Q1, second switch pipe Q2, 3rd switching tube Q3, second Schottky diode D2, 4th Schottky diode D4, first inductance L 1, second inductance L 2, 3rd inductance L 3, for connecting the power input KL30 of described power management module, for respectively with described first drive circuit, the voltage output end that second drive circuit is connected,
Described power input KL30 is connected with one end of described 3rd resistance R3, one end of the 4th resistance R4, one end of the 11 electric capacity C11, one end of the 12 electric capacity C12, one end of the 13 electric capacity C13, one end of inductance L 1 successively; The connected rear ground connection of the other end of the other end of described 11 electric capacity C11, the other end of the 12 electric capacity C12, the 13 electric capacity C13; The grid of the negative pole second switch pipe Q2 of the other end of described 4th resistance R4, one end of the 20 electric capacity C20, the first voltage stabilizing didoe Z1 is connected; The connected rear ground connection of source electrode of the other end of described 20 electric capacity C20, the positive pole of the first voltage stabilizing didoe Z1, second switch pipe Q2; The other end of described 3rd resistance R3 is connected with one end of described TVS pipe D3, ground connection after the other end of described TVS pipe D3, the drain electrode of second switch pipe Q2 are connected;
One end of one end of one end of one end of the other end of described first inductance L 1, one end of the 14 electric capacity C14, the 15 electric capacity C15, one end of the 16 electric capacity C16, one end of the 17 electric capacity C17, one end of the 18 electric capacity C18 and the second inductance L 2, one end of the 3rd inductance L 3, the 24 electric capacity C24, one end of the 23 electric capacity C23, the 22 electric capacity C22, one end of the 21 electric capacity C21, one end of the 6th resistance R6 are connected; The other end of the other end of the other end of described 14 electric capacity C14, the other end of the 15 electric capacity C15, the 16 electric capacity C16, the other end of the 17 electric capacity C17, the 18 electric capacity C18 is connected and connects afterwards; Ground connection after the other end of the other end of described 24 electric capacity C24, the other end of the 23 electric capacity C23, the 22 electric capacity C22, the other end of the 21 electric capacity C21 are connected; The other end of described 6th resistance R6, one end of the 26 electric capacity C26, one end of the 25 electric capacity C25, one end of the 8th resistance R8 are connected and are connected into the VCC pin of described 4th control chip U4; Ground connection after the other end of described 25 electric capacity C25, the other end of the 26 electric capacity C26 are connected; The other end of described 8th resistance R8, one end of the tenth resistance R10, one end of the 33 electric capacity C33 are connected and are connected into the RUN pin of described 4th control chip U4; The other end ground connection of described tenth resistance R10; Ground connection after one end of the other end of described 33 electric capacity C33, one end of the 11 resistance R11, the 13 resistance R13, one end of the 36 electric capacity C36 are connected; The other end of described 11 resistance R11 is connected into the SLOP pin of described 4th control chip U4; The other end of described 13 resistance R13 is connected with the Rset pin of described 4th control chip U4, DCL pin, DELAY pin respectively; The other end of described 36 electric capacity C36 is connected with the GBIAS pin of described 4th control chip U4, GBIAS1 pin, GBIAS2 pin respectively;
The positive pole of the other end of described second inductance L 2, the drain electrode of the 3rd switching tube Q3, the second Schottky diode D2, one end of the 19 electric capacity C19 are connected; One end of the grid of described 3rd switching tube Q3, one end of the 16 resistance R16, the 38 electric capacity C38 is connected; The other end of described 16 resistance R16 is connected with the BGATE2 pin of described 4th control chip U4; The other end ground connection of described 38 electric capacity C38; One end of the source electrode of described 3rd switching tube Q3, one end of the 20 resistance R20, the 19 resistance R19, one end of the 18 resistance R18 are connected; The SENSE2+ pin of the other end of described 18 resistance R18, one end of the 44 electric capacity C44, the 4th control chip U4 is connected; Ground connection after the described other end of the 20 resistance R20, the other end of the 19 resistance R19 are connected and being connected with the other end of described 44 electric capacity C44, the SENSE2-pin of the 4th control chip U4;
The other end of described 19 electric capacity C19 is connected with one end of described 5th resistance R5, the other end of described 5th resistance R5, the negative pole of the second Schottky diode D2, the negative pole of the 4th Schottky diode D4, one end of 27 electric capacity C27, voltage output end, one end of 28 electric capacity C28, one end of 9th resistance R9, one end of 30 electric capacity C30, one end of 32 electric capacity C32, one end of 34 electric capacity C34, the electric capacity C37 of the 37, one end of 39 electric capacity C39, one end of 41 electric capacity C41, one end of 21 resistance R21 is connected, ground connection after the other end of the other end of the other end of the other end of described 28 electric capacity C28, the other end of the 27 electric capacity C27, the 30 electric capacity C30, the other end of the 32 electric capacity C32, the 34 electric capacity C34, the other end of the 37 electric capacity C37, the 39 electric capacity C39, the other end of the 41 electric capacity C41 are connected, the other end of the 21 resistance R21, one end of the 22 resistance R22 are connected into the FB pin of described 4th control chip U4 after being connected, the other end ground connection of described R22,
The other end of described 9th resistance R9 is connected with one end of the 29 electric capacity C29; The other end of the other end of described 29 electric capacity C29, the positive pole of the 4th Schottky diode D4, the 3rd inductance L 3, the drain electrode of the first switching tube Q1 are connected;
One end of the grid of described first switching tube Q1, one end of the 31 electric capacity C31, the 7th resistance R7 is connected; The other end ground connection of described 31 electric capacity C31; The other end of described 7th resistance R7 is connected with the BGATE1 pin of described 4th control chip U4;
One end of the source electrode of described first switching tube Q1, one end of the 15 resistance R15, the 14 resistance R14, one end of the 12 resistance R12 are connected; The SENSEL1+ pin of the other end of described 12 resistance R12, one end of the 35 electric capacity C35, the 4th control chip U4 is connected; Ground connection after the described other end of the 15 resistance R15, the other end of the 14 resistance R14 are connected and being connected with the other end of described 35 electric capacity C35, the SENSEL1-pin of the 4th control chip U4.
5. matrix LED car headlamp according to claim 1, it is characterized in that: the LED being respectively equipped with 4 ~ 8 groups of parallel connections in described first headlamp circuit, the second headlamp circuit, often organize LED and be connected with described main control unit respectively by a control end.
6. the matrix LED car headlamp according to claim 1 or 3, it is characterized in that: described first drive circuit comprises the 5th control chip U5, 45 electric capacity C45, 47 electric capacity C47, 49 electric capacity C49, 51 electric capacity C51, 53 electric capacity C53, 54 electric capacity C54, 23 resistance R23, 25 resistance R25, 27 resistance R27, 29 resistance R29, 30 resistance R30, 5th Schottky diode D5, first driving voltage input, for connecting the LED1+ end of described first headlamp circuit, LED1-holds,
Described first driving voltage input is connected with one end of described 47 electric capacity C47, one end of the 23 resistance R23, the VIN pin of the 5th control chip U5 respectively; The other end ground connection of described 47 electric capacity C47; The other end of described 23 resistance R23 is connected with the TON pin of described 5th control chip U5;
The EN pin of described 5th control chip U5 is connected with described main control unit; The VCC pin of described 5th control chip U5 is connected with one end of described 51 electric capacity C51, ground connection after the other end of described 51 electric capacity C51 is connected with the EP pin of described 5th control chip U5;
One end of one end of SW pin the 45 electric capacity C45 of described 5th control chip U5, the negative pole of the 5th Schottky diode D5, the 49 electric capacity C49, one end of the 4th inductance L 4 are connected; The other end of described 45 electric capacity C45 is connected into the BOOT pin of described 5th control chip U5 by the 25 resistance R25; The other end of described 49 electric capacity C49 is connected with one end of described 27 resistance R27, ground connection after the other end of described 27 resistance R27 is connected with the positive pole of described 5th Schottky diode D5;
The other end of described 4th inductance L 4, one end of the 53 electric capacity C53, one end of the 54 electric capacity C54 are connected and are connected into described LED1+ and hold;
Described LED1-end, the other end of the 54 electric capacity C54, the other end of the 53 electric capacity C53, one end of the 30 resistance R30, one end of the 29 resistance R29 are connected and are connected into the CS pin of described 5th control chip U5; Ground connection after the other end of described 30 resistance R30, the other end of the 29 resistance R29 are connected.
7. the matrix LED car headlamp according to claim 1 or 3, it is characterized in that: described second drive circuit comprises the 6th control chip U6, 46 electric capacity C46, 48 electric capacity C48, 50 electric capacity C50, 52 electric capacity C52, 55 electric capacity C55, 56 electric capacity C56, 24 resistance R24, 26 resistance R26, 28 resistance R28, 31 resistance R31, 32 resistance R32, 6th Schottky diode D6, second driving voltage input, for connecting the LED2+ end of described second headlamp circuit, LED2-holds,
Described second driving voltage input is connected with one end of described 48 electric capacity C48, one end of the 24 resistance R24, the VIN pin of the 6th control chip U6 respectively; The other end ground connection of described 48 electric capacity C48; The other end of described 24 resistance R24 is connected with the TON pin of described 6th control chip U6;
The EN pin of described 6th control chip U6 is connected with described main control unit; The VCC pin of described 6th control chip U6 is connected with one end of described 52 electric capacity C52, ground connection after the other end of described 52 electric capacity C52 is connected with the EP pin of described 6th control chip U6;
One end of the negative pole of the SW pin of described 6th control chip U6, one end of the 46 electric capacity C46, the 6th Schottky diode D6, one end of the 50 electric capacity C50, the 5th inductance L 5 is connected; The other end of described 46 electric capacity C46 is connected into the BOOT pin of described 6th control chip U6 by the 26 resistance R26; The other end of described 50 electric capacity C50 is connected with one end of described 28 resistance R28, ground connection after the other end of described 28 resistance R28 is connected with the positive pole of described 6th Schottky diode D6;
The other end of described 5th inductance L 5, one end of the 55 electric capacity C55, one end of the 56 electric capacity C56 are connected and are connected into described LED2+ and hold;
Described LED2-end, the other end of the 56 electric capacity C56, the other end of the 55 electric capacity C55, one end of the 32 resistance R32, one end of the 31 resistance R31 are connected and are connected into the CS pin of described 6th control chip U6; Ground connection after the other end of described 31 resistance R31, the other end of the 32 resistance R32 are connected.
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|---|---|---|---|
| CN201420554802.2U CN204119609U (en) | 2014-09-25 | 2014-09-25 | Matrix LED car headlamp |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420554802.2U CN204119609U (en) | 2014-09-25 | 2014-09-25 | Matrix LED car headlamp |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105072753A (en) * | 2015-08-05 | 2015-11-18 | 嘿灯（深圳）智能科技有限公司 | Serial light-emitting diode (LED) dimming circuit |
| CN105228301A (en) * | 2015-09-25 | 2016-01-06 | 科博达技术有限公司 | Atmosphere lamp control circuit and control method thereof in car |
| CN106501698A (en) * | 2016-10-13 | 2017-03-15 | 武汉通畅汽车电子照明有限公司 | Matrix LED Heightlight Testing system and method |
| CN107493622A (en) * | 2017-07-04 | 2017-12-19 | 上海小糸车灯有限公司 | Matrix LED driving control system and control method for automobile lamp |
| CN108340828A (en) * | 2017-01-23 | 2018-07-31 | 常州星宇车灯股份有限公司 | Matrix LED headlamp and its control method based on UART networks |
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2014
- 2014-09-25 CN CN201420554802.2U patent/CN204119609U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105072753A (en) * | 2015-08-05 | 2015-11-18 | 嘿灯（深圳）智能科技有限公司 | Serial light-emitting diode (LED) dimming circuit |
| CN105228301A (en) * | 2015-09-25 | 2016-01-06 | 科博达技术有限公司 | Atmosphere lamp control circuit and control method thereof in car |
| CN105228301B (en) * | 2015-09-25 | 2018-08-10 | 科博达技术股份有限公司 | Interior atmosphere lamp control circuit and its control method |
| CN106501698A (en) * | 2016-10-13 | 2017-03-15 | 武汉通畅汽车电子照明有限公司 | Matrix LED Heightlight Testing system and method |
| CN106501698B (en) * | 2016-10-13 | 2020-02-07 | 武汉通畅汽车电子照明有限公司 | Matrix type LED headlamp test system and method |
| CN108340828A (en) * | 2017-01-23 | 2018-07-31 | 常州星宇车灯股份有限公司 | Matrix LED headlamp and its control method based on UART networks |
| CN107493622A (en) * | 2017-07-04 | 2017-12-19 | 上海小糸车灯有限公司 | Matrix LED driving control system and control method for automobile lamp |
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