CN116782449A - Car lamp control system and method meeting different light color and brightness requirements - Google Patents

Car lamp control system and method meeting different light color and brightness requirements Download PDF

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Publication number
CN116782449A
CN116782449A CN202310723217.4A CN202310723217A CN116782449A CN 116782449 A CN116782449 A CN 116782449A CN 202310723217 A CN202310723217 A CN 202310723217A CN 116782449 A CN116782449 A CN 116782449A
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CN
China
Prior art keywords
lamp
module
daytime running
light
front steering
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Pending
Application number
CN202310723217.4A
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Chinese (zh)
Inventor
滕云鹏
王子军
李志刚
马文峰
盛红金
甄麒
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FAW Bestune Car Co Ltd
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FAW Bestune Car Co Ltd
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Publication date
Application filed by FAW Bestune Car Co Ltd filed Critical FAW Bestune Car Co Ltd
Priority to CN202310723217.4A priority Critical patent/CN116782449A/en
Publication of CN116782449A publication Critical patent/CN116782449A/en
Pending legal-status Critical Current

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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
    • B60Q11/00—Arrangement of monitoring devices for devices provided for in groups B60Q1/00 - B60Q9/00
    • 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]
    • H05B45/10—Controlling the intensity of the light
    • 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]
    • H05B45/30—Driver circuits
    • H05B45/32—Pulse-control circuits
    • H05B45/325—Pulse-width modulation [PWM]
    • 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
    • H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
    • H05B47/10—Controlling the light source
    • H05B47/155—Coordinated control of two or more light sources

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Lighting Device Outwards From Vehicle And Optical Signal (AREA)

Abstract

The invention belongs to the technical field of automobiles, and particularly relates to a car lamp control system and a car lamp control method capable of meeting different light color and brightness requirements. The car light control system comprises a BCM module, a voltage stabilizing module, a light control module, a front steering lamp driving module, a daytime running lamp/front position lamp driving module, a fault feedback module, a front steering light source board, and a daytime running lamp/front position light source board; aiming at the multiplexing scene of the front steering lamp, the daytime running lamp and the front position lamp, the invention realizes the fault alarm function of the front steering lamp with different light functions, light color and brightness requirements and legal requirements. Meanwhile, the difference of the brightness of the daytime running lamp and the front lamp is controlled by adopting a PWM (pulse width modulation) Pulse Width Modulation dimming mode, so that the influence of light color deviation caused by traditional analog dimming is effectively avoided.

Description

Car lamp control system and method meeting different light color and brightness requirements
Technical Field
The invention belongs to the technical field of automobiles, and particularly relates to a car lamp control system and a car lamp control method capable of meeting different light color and brightness requirements.
Background
Along with the development of the modeling trend of automobiles, the miniaturization of a front headlight becomes the main stream of modeling scheme design. More and more headlights are led to use a multifunctional common light emitting area to reduce the overall size of the headlight, and the functions of the headlight, the daytime running light and the headlight are increasingly integrated into one light emitting area. However, the requirements of the regulations of the three functions are different, the front steering lamp has a yellow luminous effect, the daytime running lamp and the front lamp have a white luminous effect, the requirements of luminous intensity of the daytime running lamp and the front lamp are different, and the priority of the simultaneous lighting of the three functions is also different. How to effectively and simply realize the control of three functions is a difficult problem facing the industry.
Disclosure of Invention
In order to solve the problems, the invention provides a car lamp control system and a car lamp control method which meet the requirements of different light colors and brightness, and aims at the multiplexing scene of a front steering lamp, a daytime running lamp and a front position lamp to realize the fault alarming function of the front steering lamp with different light functions, light colors and brightness requirements and legal requirements. Meanwhile, the difference of the brightness of the daytime running lamp and the front lamp is controlled by adopting a PWM (pulse width modulation) Pulse Width Modulation dimming mode, so that the influence of light color deviation caused by traditional analog dimming is effectively avoided.
The technical scheme of the invention is as follows in combination with the accompanying drawings:
in a first aspect, the present invention provides a vehicle lamp control system that meets different light color and brightness requirements, comprising:
the BCM module 1 is used for starting to supply power to the voltage stabilizing module 2, the front steering lamp driving module 4 and the daytime running lamp/headlight driving module 5 when receiving a light lighting signal of the front steering lamp switch or judging that the whole vehicle meets the starting condition of the daytime running lamp or receiving a light lighting signal of the headlight switch; when the light turning-off signal of the front steering lamp switch is received, or the whole vehicle is judged to meet the daytime running lamp turning-off condition, or the light turning-off signal of the front position lamp switch is received, the power supply to the voltage stabilizing module 2, the front steering lamp driving module 4 and the daytime running lamp/front position lamp driving module 5 is stopped; receiving a grounding signal of the fault feedback module 6, and feeding back fault information of the front steering lamp to the whole vehicle;
the voltage stabilizing module 2 is used for stabilizing the voltage input by the BCM module 1 and supplying power to the light control module 3;
the light control module 3 is used for controlling the front steering lamp driving module 4, the daytime running lamp/front position lamp driving module 5, the fault feedback module 6, the front steering lamp light source board 7 and the daytime running lamp/front position lamp light source board 8;
the front steering lamp driving module 4 is used for supplying power to the front steering lamp light source plate 7;
a daytime running light/headlight driving module 5 for supplying power to the daytime running light/headlight source board 8;
a fault feedback module 6 for receiving fault signals of the front steering lamp, the daytime running light/the headlight;
a front steering light source board 7 for controlling the on or off of the yellow LED light source;
daytime running lights/headlight source panel 8 for controlling the on or off of the white LED light source.
Further, the light control module 3 works as follows:
(1) simultaneously detecting two or three signals of a daytime running light power supply state signal, a front-position light power supply state signal and a front steering light power supply state signal of the BCM module 1, wherein the lighting priority is that the front steering light is more than or equal to the daytime running light and more than or equal to the front-position light;
(2) after detecting a power supply state signal of a front steering lamp of the BCM module 1, opening a MOS tube in a front steering lamp light source plate 7 to connect an LED light source with the front steering lamp driving module 4; the front steering lamp driving module 4 sends out a front steering lamp lighting signal after 15 ms;
(3) receiving a front steering lamp fault signal of the front steering lamp driving module 5, and outputting a high level to the fault feedback module 6; otherwise, outputting a low level to the fault feedback module 6;
(4) after detecting a daytime running lamp power supply state signal of the BCM module 1, turning on an MOS tube in a daytime running lamp/headlight source board 7 to enable the LED light source to be connected with the daytime running lamp/headlight driving module 4; a 15ms back daytime running light/headlight driving module 4 sends out a daytime running light lighting signal;
(5) after detecting a headlight power supply state signal of the BCM module 1, turning on an MOS tube in a daytime running light/headlight source board 7 to enable the LED light source to be connected with the daytime running light/headlight driving module 4; the daytime running light/headlight driving module 4 emits a headlight ignition signal after 15 ms.
Further, the working mode of the front turn lamp driving module 4 is as follows:
(1) receiving a front steering lamp lighting signal of a light control module 3, and controlling the power supply current of a front steering lamp light source plate 7 by switching on and off MOS (metal oxide semiconductor) tubes in the control module;
(2) the fault diagnosis module detects abnormal normal pressure in the loop, judges that the loop is faulty, and transmits a fault state to the light control module 3.
Further, the daytime running light/headlight driving module 5 operates as follows:
(1) receiving a daytime running lamp lighting signal of the lamplight control module 3, and periodically switching on and switching off an MOS tube in the control module to control the power supply current of the daytime running lamp/front lamplight source board 8;
(2) and the control module receives a front lamp lighting signal of the lamplight control module 3, and the MOS tube in the control module is periodically turned on and off to realize the control of the power supply current of the daytime running lamp/front lamp light source board 8.
In a second aspect, the present invention also provides a vehicle lamp control method for meeting requirements of different light colors and brightness, which is implemented by a vehicle lamp control system for meeting requirements of different light colors and brightness, and includes the following steps:
step one, when the BCM 1 receives a light lighting signal of a front steering lamp switch, or judges that the whole vehicle meets a daytime running lamp starting condition, or receives the light lighting signal of a front position lamp switch, respectively starting the front steering lamp to supply power, the daytime running lamp to supply power and the front position lamp to supply power;
step two, the light control module 3 collects power supply states, and when two or three signals of a front steering lamp power supply state signal, a daytime running lamp power supply state signal and a front position lamp power supply state signal of the BCM module 1 are detected at the same time, the front steering lamp, the daytime running lamp or the front position lamp is lightened;
step three, after the light control module 3 detects a power supply state signal of a front steering lamp of the BCM module 1, the front steering lamp light source plate 7 is controlled to be communicated with the front steering lamp driving module 4; the front steering lamp driving module 4 sends out a front steering lamp lighting signal after 15 ms; the front steering lamp driving module 4 receives a front steering lamp lighting signal of the light control module 3, and the MOS tube in the control module is turned on and off to control the power supply current of the front steering lamp light source plate 7;
step four, a fault diagnosis module in the front steering lamp driving module 4 detects abnormal voltage in the loop, judges that the abnormal voltage is faulty and transmits a fault state to the light control module 3; the lamplight control module 3 outputs a high level to the fault feedback module 6; otherwise, outputting a low level to the fault feedback module 6; the fault feedback module 6 receives the high level of the light control module 3, the MOS tube is conducted, and the input end of the BCM module is grounded; receiving the low level of the light control module 3, turning off the MOS tube, and suspending the input end of the BCM module 1; finally, the function of reporting the fault or normal state of the front steering lamp to the whole vehicle is realized;
step five, the light control module 3 does not detect the power supply state signal of the front steering lamp of the BCM module 1, and controls the daytime running lamp/headlight source board 8 to be connected with the daytime running lamp/headlight driving module 5 after detecting the power supply state signal of the daytime running lamp of the BCM module 1; a 15ms back daytime running light/headlight driving module 5 sends out a daytime running light lighting signal; the daytime running lamp/headlight driving module 5 receives a daytime running lamp lighting signal of the light control module 3, and the MOS tube in the control module is periodically turned on and off to control the power supply current of the daytime running lamp/headlight source board 8;
step six, the light control module 3 does not detect the power supply state signal of the front steering lamp and the power supply state signal of the daytime running lamp of the BCM module 1, and controls the connection of the daytime running lamp/front light source board 8 and the daytime running lamp/front light driving module 5 after detecting the power supply state signal of the front position lamp of the BCM module 1; a headlight lighting signal is sent to the daytime running light/headlight driving module 5 after 15 ms; the daytime running light/headlight driving module 5 receives a headlight lighting signal of the light control module 3, and the MOS tube in the control module is periodically turned on and off to control the power supply current of the daytime running light/headlight light source board 8.
Further, the lighting priority is that the front steering lamp is more than or equal to the daytime running lamp is more than or equal to the front position lamp.
Further, the control of the power supply current to the front steering lamp light source board 7 is represented by a yellow light emitting state of the front steering lamp.
Further, the daytime running light/headlight driving module 5 receives a daytime running light lighting signal of the light control module 3, and controls the power supply current of the daytime running light/headlight source board 8 to realize PWM dimming, the frequency is 230Hz, the duty ratio is 40%, and the daytime running light is in a white light emitting state with high brightness.
Further, the daytime running light/headlight driving module 5 receives a headlight lighting signal of the light control module 3, controls the power supply current of the daytime running light/headlight source board 8, realizes PWM dimming, has the frequency of 230Hz and the duty ratio of 5%, and shows a low-brightness headlight white lighting state.
The beneficial effects of the invention are as follows:
aiming at the multiplexing scene of the front steering lamp, the daytime running lamp and the front position lamp, the invention can realize the fault alarm function of the front steering lamp with different light functions, light color and brightness requirements and legal requirements. Meanwhile, the difference of the brightness of the daytime running lamp and the front lamp is controlled by adopting a PWM (pulse width modulation) Pulse Width Modulation dimming mode, so that the influence of light color deviation caused by traditional analog dimming is effectively avoided.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a lamp control system for meeting different light color and brightness requirements according to the present invention;
FIG. 2 is a schematic flow chart of a method for controlling a vehicle lamp according to the present invention for satisfying different light color and brightness requirements;
fig. 3 is a schematic structural diagram of the fault feedback module.
In the figure:
1. a BCM module; 2. a voltage stabilizing module; 3. a light control module; 4. a front turn signal driving module; 5. daytime running lights/headlight driving modules; 6. a fault feedback module; 7. front steering light source board; 8. daytime running lights/headlight source board.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures. Meanwhile, in the description of the present invention, the terms "first", "second", and the like are used only to distinguish the description, and are not to be construed as indicating or implying relative importance.
Example 1
Referring to fig. 1, a vehicle lamp control system meeting different light color and brightness requirements according to an embodiment of the present invention includes:
the BCM module 1 is used for starting to supply power to the voltage stabilizing module 2, the front steering lamp driving module 4 and the daytime running lamp/headlight driving module 5 when receiving a light lighting signal of the front steering lamp switch or judging that the whole vehicle meets the starting condition of the daytime running lamp or receiving a light lighting signal of the headlight switch; when the light turning-off signal of the front steering lamp switch is received, or the whole vehicle is judged to meet the daytime running lamp turning-off condition, or the light turning-off signal of the front position lamp switch is received, the power supply to the voltage stabilizing module 2, the front steering lamp driving module 4 and the daytime running lamp/front position lamp driving module 5 is stopped; receiving a grounding signal of the fault feedback module 6, and feeding back fault information of the front steering lamp to the whole vehicle;
the voltage stabilizing module 2 is used for stabilizing the 13.5V voltage input by the BCM module 1 to 5V and supplying power to the light control module 3;
the light control module 3 is used for controlling the front steering lamp driving module 4, the daytime running lamp/front position lamp driving module 5, the fault feedback module 6, the front steering lamp light source board 7 and the daytime running lamp/front position lamp light source board 8;
the light control module 3 works as follows:
(1) simultaneously detecting two or three signals of a daytime running light power supply state signal, a front-position light power supply state signal and a front steering light power supply state signal of the BCM module 1, wherein the lighting priority is that the front steering light is more than or equal to the daytime running light and more than or equal to the front-position light;
(2) after detecting a power supply state signal of a front steering lamp of the BCM module 1, opening a MOS tube in a front steering lamp light source plate 7 to connect an LED light source with the front steering lamp driving module 4; the front steering lamp driving module 4 sends out a front steering lamp lighting signal after 15 ms;
(3) receiving a front steering lamp fault signal of the front steering lamp driving module 5, and outputting a high level to the fault feedback module 6; otherwise, outputting a low level to the fault feedback module 6;
(4) after detecting a daytime running lamp power supply state signal of the BCM module 1, turning on an MOS tube in a daytime running lamp/headlight source board 7 to enable the LED light source to be connected with the daytime running lamp/headlight driving module 4; a 15ms back daytime running light/headlight driving module 4 sends out a daytime running light lighting signal;
(5) after detecting a headlight power supply state signal of the BCM module 1, turning on an MOS tube in a daytime running light/headlight source board 7 to enable the LED light source to be connected with the daytime running light/headlight driving module 4; the daytime running light/headlight driving module 4 emits a headlight ignition signal after 15 ms.
The front steering lamp driving module 4 is provided with a fault diagnosis module and is used for supplying power to the front steering lamp light source board 7;
the front steering lamp driving module 4 works as follows:
(1) receiving a front steering lamp lighting signal of a light control module 3, and controlling the power supply current of a front steering lamp light source plate 7 by switching on and off MOS (metal oxide semiconductor) tubes in the control module;
(2) the fault diagnosis module detects abnormal normal pressure in the loop, judges that the loop is faulty, and transmits a fault state to the light control module 3.
A daytime running light/headlight driving module 5 for supplying power to the daytime running light/headlight source board 8;
the daytime running light/headlight driving module 5 works as follows:
(1) receiving a daytime running lamp lighting signal of the lamplight control module 3, periodically switching on and switching off an MOS tube in the control module to control the power supply current of the daytime running lamp/front lamplight source board 8, and realizing PWM dimming with the frequency of 230Hz and the duty ratio of 40%;
(2) and when a headlight lighting signal of the lamplight control module 3 is received, the MOS tube in the control module is periodically turned on and off to control the power supply current of the daytime running lamp/headlight source board 8, so that PWM dimming is realized, the frequency is 230Hz, and the duty ratio is 5%.
Referring to fig. 3, the fault feedback module 6 is configured to receive a high level of the light control module 3, and conduct a MOS transistor, and ground an input end of the BCM module; receiving the low level of the light control module 3, turning off the MOS tube, and suspending the input end of the BCM module;
a front steering lamp light source board 7 for controlling current state according to the front steering lamp driving module 4 (with fault diagnosis module) to realize the on or off of the yellow LED light source, which is represented by yellow light emitting state of the front steering lamp
The daytime running light/headlight source board 8 is configured to realize on or off of the white LED light source according to the control current state of the daytime running light/headlight driving module 5, and is represented by a high-luminance daytime running light white light emitting state or a low-luminance headlight white light emitting state.
Example two
Referring to fig. 2, an embodiment of the present invention provides a vehicle lamp control method for meeting requirements of different light colors and brightness, which is implemented by a vehicle lamp control system for meeting requirements of different light colors and brightness, and is characterized by comprising the following steps:
s10, when the BCM 1 receives a light lighting signal of a front steering lamp switch, or judges that the whole vehicle meets a daytime running lamp starting condition, or receives the light lighting signal of a front position lamp switch, the BCM respectively starts the front steering lamp to supply power, the daytime running lamp to supply power and the front position lamp to supply power.
S20, the lamplight control module 3 collects power supply states, and when two or three signals of a front steering lamp power supply state signal, a daytime running lamp power supply state signal and a front position lamp power supply state signal of the BCM module 1 are detected at the same time, the lighting priority is that the front steering lamp is more than or equal to the daytime running lamp is more than or equal to the front position lamp.
S30, after the light control module 3 detects a power supply state signal of a front steering lamp of the BCM module 1, the front steering lamp light source plate 7 is controlled to be communicated with the front steering lamp driving module 4 (with a fault diagnosis module); after 15ms, the front turn signal is sent to the front turn signal driving module 4 (with fault diagnosis module). The front steering lamp driving module 4 (with a fault diagnosis module) receives a front steering lamp lighting signal of the light control module 3, and MOS (metal oxide semiconductor) tubes in the control module are turned on and off to control the power supply current of the front steering lamp light source plate 7. The front steering lamp is in a yellow luminous state.
S40, a fault diagnosis module in the front steering lamp driving module 4 (with a fault diagnosis module) detects abnormal voltage in the loop, judges that the abnormal voltage is faulty, and transmits a fault state to the light control module 3. The lamplight control module 3 outputs a high level to the fault feedback module 6; otherwise, a low level is output to the fault feedback module 6. The fault feedback module 6 receives the high level of the light control module 3, the MOS tube is conducted, and the input end of the BCM module is grounded; and receiving the low level of the light control module 3, turning off the MOS tube, and suspending the input end of the BCM module. Finally, the function of reporting the fault or normal state of the front steering lamp to the whole vehicle is realized.
S50, after the light control module 3 does not detect a front steering lamp power supply state signal of the BCM module 1 and detects a daytime running lamp power supply state signal of the BCM module 1, controlling the daytime running lamp/headlamp light source board 8 to be communicated with the daytime running lamp/headlamp driving module 5; the 15ms later sends a daytime running light-on signal to the daytime running light/headlight driving module 5. The daytime running light/headlight driving module 5 receives a daytime running light lighting signal of the light control module 3, and the MOS tube in the control module is periodically turned on and off to control the power supply current of the daytime running light/headlight source board 8, so that PWM dimming is realized, the frequency is 230Hz, the duty ratio is 40%, and the daytime running light is in a high-brightness white light-emitting state.
S60, after the light control module 3 does not detect the front steering lamp power supply state signal and the daytime running lamp power supply state signal of the BCM module 1 and detects the front lamp power supply state signal of the BCM module 1, the daytime running lamp/front lamp light source board 8 is controlled to be communicated with the daytime running lamp/front lamp driving module 5; the 15ms later sends out a headlight on signal to the daytime running light/headlight driving module 5. The daytime running lamp/headlight driving module 5 receives a headlight lighting signal of the light control module 3, and the MOS tube in the control module is periodically turned on and off to control the power supply current of the daytime running lamp/headlight source board 8, so that PWM dimming is realized, the frequency is 230Hz, the duty ratio is 5%, and the low-brightness headlight is in a white lighting state.
In conclusion, the invention aims at the multiplexing scene of the front steering lamp, the daytime running lamp and the front position lamp, and can realize the fault alarm function of the front steering lamp with different light functions, light color and brightness requirements and legal requirements. Meanwhile, the difference of the brightness of the daytime running lamp and the front lamp is controlled by adopting a PWM (pulse width modulation) Pulse Width Modulation dimming mode, so that the influence of light color deviation caused by traditional analog dimming is effectively avoided.
Although embodiments of the present invention have been disclosed above, they are not limited to the use listed in the description and modes of implementation. It can be applied to various fields suitable for the present invention. Additional modifications will readily occur to those skilled in the art. Therefore, the invention is not to be limited to the specific details and illustrations shown and described herein, without departing from the general concepts defined in the claims and their equivalents.

Claims (9)

1. A vehicle lamp control system for meeting different light color and brightness requirements, comprising:
the BCM module (1) is used for starting to supply power to the voltage stabilizing module (2), the front steering lamp driving module (4) and the daytime running lamp/headlight driving module (5) when receiving a light lighting signal of the front steering lamp switch or judging that the whole vehicle meets the starting condition of the daytime running lamp or receiving a light lighting signal of the headlight switch; when a light closing signal of a front steering lamp switch is received, or the whole vehicle is judged to meet a daytime running lamp closing condition, or the light closing signal of a front position lamp switch is received, power supply to the voltage stabilizing module (2), the front steering lamp driving module (4) and the daytime running lamp/front position lamp driving module (5) is stopped; receiving a grounding signal of a fault feedback module (6), and feeding back fault information of a front steering lamp to the whole vehicle;
the voltage stabilizing module (2) is used for stabilizing the voltage input by the BCM (1) and supplying power to the light control module (3);
the lamplight control module (3) is used for controlling the front steering lamp driving module (4), the daytime running lamp/front lamp driving module (5), the fault feedback module (6), the front steering lamp light source board (7) and the daytime running lamp/front lamp light source board (8);
the front steering lamp driving module (4) is used for supplying power to the front steering lamp light source board (7);
a daytime running light/headlight driving module (5) for supplying power to the daytime running light/headlight source board (8);
a fault feedback module (6) for receiving fault signals of the front steering lamp, the daytime running light/the headlight;
a front steering light source board (7) for controlling the on or off of the yellow LED light source;
and a daytime running light/front light source board (8) is used for controlling the on or off of the white light LED light source.
2. The vehicle lamp control system according to claim 1, wherein the lamp control module (3) works as follows:
(1) simultaneously detecting two or three signals of a daytime running lamp power supply state signal, a front-position lamp power supply state signal and a front steering lamp power supply state signal of the BCM module (1), wherein the lighting priority is that the front steering lamp is more than or equal to the daytime running lamp and more than or equal to the front-position lamp;
(2) after detecting a power supply state signal of a front steering lamp of the BCM module (1), opening a MOS tube in a front steering lamp light source board (7) to enable an LED light source to be connected with a front steering lamp driving module (4); a front steering lamp driving module (4) sends a front steering lamp lighting signal after 15 ms;
(3) receiving a front steering lamp fault signal of a front steering lamp driving module (5), and outputting a high level to a fault feedback module (6); otherwise, outputting a low level to the fault feedback module (6);
(4) after detecting a daytime running lamp power supply state signal of the BCM module (1), switching on an MOS tube in a daytime running lamp/headlight source board (7) to enable an LED light source to be connected with the daytime running lamp/headlight driving module (4); a daytime running light/headlight driving module (4) sends a daytime running light lighting signal after 15 ms;
(5) after detecting a headlight power supply state signal of the BCM module (1), turning on an MOS tube in a daytime running light/headlight source board (7) to enable an LED light source to be connected with the daytime running light/headlight driving module (4); the 15ms later sends out a headlight-on signal to the daytime running light/headlight driving module (4).
3. The vehicle lamp control system according to claim 1, wherein the front turn lamp driving module (4) operates in the following manner:
(1) receiving a front steering lamp lighting signal of a light control module (3), and controlling the power supply current of a front steering lamp light source plate 7 by switching on and off MOS (metal oxide semiconductor) tubes in the control module;
(2) the fault diagnosis module detects abnormal normal pressure in the loop, judges that the loop is faulty, and transmits a fault state to the light control module (3).
4. A vehicle lamp control system according to claim 1, wherein the daytime running light/headlight driving module (5) operates in the following manner:
(1) receiving a daytime running lamp lighting signal of the lamplight control module 3, and periodically switching on and switching off an MOS tube in the control module to control the power supply current of the daytime running lamp/front lamplight source board (8);
(2) and when a headlight lighting signal of the lamplight control module (3) is received, the MOS tube in the control module is periodically turned on and off to control the power supply current of the daytime running lamp/headlight light source board (8).
5. A car lamp control method meeting the requirements of different light colors and brightness is realized by a car lamp control system meeting the requirements of different light colors and brightness, and is characterized by comprising the following steps:
step one, when a BCM (1) receives a lamplight lighting signal of a front steering lamp switch, or judges that the whole vehicle meets a daytime running lamp starting condition, or receives the lamplight lighting signal of a front position lamp switch, respectively starting the front steering lamp to supply power, the daytime running lamp to supply power and the front position lamp to supply power;
step two, the lamplight control module (3) collects power supply states, and when two or three signals of a front steering lamp power supply state signal, a daytime running lamp power supply state signal and a front position lamp power supply state signal of the BCM module (1) are detected at the same time, the front steering lamp or the daytime running lamp or the front position lamp is lightened;
step three, after the light control module (3) detects a power supply state signal of a front steering lamp of the BCM module (1), a front steering lamp light source board (7) is controlled to be communicated with the front steering lamp driving module (4); a front steering lamp driving module (4) sends a front steering lamp lighting signal after 15 ms; the front steering lamp driving module (4) receives a front steering lamp lighting signal of the light control module 3, and MOS (metal oxide semiconductor) tubes in the control module are turned on and off to control the power supply current of the front steering lamp light source plate 7;
step four, a fault diagnosis module in the front steering lamp driving module (4) detects abnormal normal pressure in a loop, judges that the loop is faulty, and transmits a fault state to the light control module (3); the lamplight control module (3) outputs high level to the fault feedback module (6); otherwise, outputting a low level to the fault feedback module (6); the fault feedback module (6) receives the high level of the lamplight control module (3), the MOS tube is conducted, and the input end of the BCM module is grounded; receiving low level of the light control module (3), turning off the MOS tube, and suspending the input end of the BCM module (1); finally, the function of reporting the fault or normal state of the front steering lamp to the whole vehicle is realized;
step five, the light control module (3) does not detect a front steering lamp power supply state signal of the BCM module (1), and controls a daytime running lamp/front light source board (8) to be connected with the daytime running lamp/front light driving module (5) after detecting a daytime running lamp power supply state signal of the BCM module (1); a daytime running light/headlight driving module (5) sends a daytime running light lighting signal after 15 ms; the daytime running lamp/headlight driving module (5) receives a daytime running lamp lighting signal of the light control module (3), and the MOS tube in the control module is periodically turned on and off to control the power supply current of the daytime running lamp/headlight source board (8);
step six, the light control module (3) does not detect the front steering lamp power supply state signal and the daytime running lamp power supply state signal of the BCM module (1), and controls the daytime running lamp/front light source board (8) to be communicated with the daytime running lamp/front light driving module (5) after detecting the front position lamp power supply state signal of the BCM module (1); a front lamp lighting signal is sent to a daytime running lamp/front lamp driving module (5) after 15 ms; the daytime running lamp/headlight driving module (5) receives a headlight lighting signal of the light control module (3), and the MOS tube in the control module is periodically turned on and off to control the power supply current of the daytime running lamp/headlight source board (8).
6. The method for controlling a vehicle lamp according to claim 5, wherein the lighting priority is that the front steering lamp is not less than the daytime running lamp is not less than the headlight.
7. A method for controlling a vehicle lamp according to claim 5, wherein the control of the supply current to the front steering lamp light source plate (7) is represented by a yellow lighting state of the front steering lamp.
8. The method according to claim 5, wherein the daytime running light/headlight driving module (5) receives a daytime running light lighting signal from the light control module (3), and the supply current to the daytime running light/headlight source board (8) is controlled to achieve PWM dimming at a frequency of 230Hz with a duty ratio of 40%, which is a white light emitting state of the high-brightness daytime running light.
9. The method for controlling the vehicle lamp meeting the requirements of different light colors and brightness according to claim 5, wherein the daytime running light/headlight driving module (5) receives a headlight lighting signal of the light control module (3), controls the power supply current of the daytime running light/headlight source board (8), realizes PWM dimming, has the frequency of 230Hz, has the duty ratio of 5%, and shows a low-brightness headlight white light emitting state.
CN202310723217.4A 2023-06-19 2023-06-19 Car lamp control system and method meeting different light color and brightness requirements Pending CN116782449A (en)

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CN202310723217.4A CN116782449A (en) 2023-06-19 2023-06-19 Car lamp control system and method meeting different light color and brightness requirements

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CN202310723217.4A CN116782449A (en) 2023-06-19 2023-06-19 Car lamp control system and method meeting different light color and brightness requirements

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