CN113844459A - Lighting control system for safe driving and control method thereof - Google Patents

Lighting control system for safe driving and control method thereof Download PDF

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Publication number
CN113844459A
CN113844459A CN202111010746.7A CN202111010746A CN113844459A CN 113844459 A CN113844459 A CN 113844459A CN 202111010746 A CN202111010746 A CN 202111010746A CN 113844459 A CN113844459 A CN 113844459A
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control chip
driver
signal transceiver
risk level
module
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邵志栋
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Jiangling Motors Corp Ltd
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Jiangling Motors Corp Ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W50/00—Details of control systems for road vehicle drive control not related to the control of a particular sub-unit, e.g. process diagnostic or vehicle driver interfaces
    • B60W50/08—Interaction between the driver and the control system
    • B60W50/14—Means for informing the driver, warning the driver or prompting a driver intervention
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
    • B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
    • B60R16/023—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for transmission of signals between vehicle parts or subsystems
    • B60R16/0231—Circuits relating to the driving or the functioning of the vehicle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W50/00—Details of control systems for road vehicle drive control not related to the control of a particular sub-unit, e.g. process diagnostic or vehicle driver interfaces
    • B60W50/08—Interaction between the driver and the control system
    • B60W50/14—Means for informing the driver, warning the driver or prompting a driver intervention
    • B60W2050/146—Display means

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  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Mechanical Engineering (AREA)
  • Human Computer Interaction (AREA)
  • Transportation (AREA)
  • Circuit Arrangement For Electric Light Sources In General (AREA)

Abstract

The invention provides a safe driving illumination control system and a control method thereof, wherein the system comprises: the fatigue degree detection module comprises an image processing unit, an image acquisition unit and a first CAN signal transceiver which are respectively connected with the image processing unit, and the vehicle body control module comprises a first control chip, a second CAN signal transceiver and a LIN signal transceiver which are respectively connected with the first control chip; the light control module comprises a second control chip and three primary color light emitting diodes, wherein the LIN end of the second control chip is connected with the output end of the LIN transceiver, the VS end of the second control chip is connected with the input end of the three primary color light emitting diodes, and the output end of the three primary color light emitting diodes is connected with the HV end of the second control chip. The safety driving illumination control system provided by the invention can automatically output mixed light according to the fatigue degree of a driver to inhibit the generation of melatonin, thereby effectively relieving the fatigue of the driver, improving the driving safety and preventing traffic accidents.

Description

Lighting control system for safe driving and control method thereof
Technical Field
The invention relates to the technical field of vehicles, in particular to a lighting control system for safe driving and a control method thereof.
Background
With the continuous improvement of the living standard of people, the number of automobiles is also increased year by year, the popularization of the automobiles creates convenience for the life of human society, and meanwhile, the safety problem of the automobiles is more and more concerned by people.
Fatigue driving is a main factor influencing driving safety, and means that after a driver drives a vehicle continuously for a long time, the physiological function and the mental function are disordered, so that the driving skill is reduced. Once a driver is tired, unsafe factors such as slow movement or early time, operation pause and the like easily occur due to inattention and judgment decline, and road traffic accidents are easily caused.
The existing fatigue driving reminding mode is mainly characterized in that simple voice reminding or light alarming is adopted to inform a driver of needing to rest, but the driver is difficult to stop for rest in a short time on a highway and under special road conditions, so that serious driving potential safety hazards exist.
Disclosure of Invention
Based on this, the present invention is directed to a lighting control system for safe driving and a control method thereof, so as to solve at least one of the above problems.
According to the invention, a safety driving lighting control system is provided, which comprises:
the fatigue detection module comprises an image processing unit, an image acquisition unit and a first CAN signal transceiver, wherein the image acquisition unit and the first CAN signal transceiver are respectively connected with the image processing unit;
the vehicle body control module comprises a first control chip, and a second CAN signal transceiver and a LIN signal transceiver which are respectively connected with the first control chip, wherein the second CAN signal transceiver is connected with the first CAN signal transceiver through a CAN network, and the first control chip is used for calculating a risk level according to the fatigue degree of a driver;
the light control module comprises a second control chip and three-primary-color light-emitting diodes, wherein an LIN end of the second control chip is connected with an output end of the LIN transceiver, a VS end of the second control chip is connected with an input end of the three-primary-color light-emitting diodes, output ends of the three-primary-color light-emitting diodes are connected with an HV end of the second control chip, and the second control chip is used for controlling the three-primary-color light-emitting diodes to emit mixed light with a preset proportion according to the risk level so as to inhibit generation of melatonin of a driver.
According to the lighting control system for safe driving, the non-visual photobiological effect is utilized to inhibit the generation of melatonin of the driver, so that the effect of relieving the fatigue of the driver is achieved, and the driving safety is ensured. Specifically, the image acquisition unit acquires a face image of a driver in real time to generate image information, the image information is sent to the image processing unit, so that the current fatigue of the driver is obtained through calculation, the first control module acquires a risk level according to the current fatigue of the driver and sends the risk level to the second control chip through the LIN signal transceiver, and the second control chip controls the three-primary-color light emitting diodes to emit mixed light according to the current risk level so as to inhibit the generation of melatonin of the driver, so that the driver is stimulated to be conscious and excited, and the driving safety potential hazard caused by fatigue driving is effectively solved.
Further, still include on-vehicle amusement module, on-vehicle amusement module include the third control chip and with the third CAN signal transceiver that the third control chip is connected, the third CAN signal transceiver pass through the CAN network respectively with first CAN signal transceiver, second CAN signal transceiver are connected, work as on-vehicle amusement module is gone up the back, the electric control chip passes through the third CAN signal transceiver respectively to fatigue degree detection module, automobile body control module send and predetermine the message, in order to incite somebody to action fatigue degree detection module with automobile body control module awakens up.
Further, still include instrument display module, instrument display module include fourth control chip and with fourth CAN signal transceiver, the display screen that fourth control chip connects, fourth CAN signal transceiver respectively with second CAN signal transceiver, third CAN signal transceiver are connected, fourth CAN signal transceiver is used for receiving current driver fatigue degree and the risk grade that corresponds, fourth control chip is used for the basis current driver fatigue degree and the risk grade that corresponds generate early warning signal, and will early warning signal send to the display screen, in order to remind the driver.
Further, the light control module further comprises a power supply, an anti-reflection diode, an ESD tube and a TVS tube, wherein the power supply is connected with an input end of the anti-reflection diode, an output end of the anti-reflection diode is respectively connected with the TVS tube and a VS end of the second control chip, and the ESD tube is respectively connected with an output end of the LIN signal transceiver and a LIN end of the second control chip.
Further, the three primary color leds include red, green and blue leds, and the red, green and blue leds are respectively connected to the HV0 terminal, the HV1 terminal and the HV2 terminal of the second control chip through an NPN transistor.
The invention also provides a control method based on the safe driving control system, which is characterized by comprising the following steps:
when the fatigue detection module is awakened, the image acquisition unit continuously acquires face images of a driver every a first preset time to generate video information, the image processing unit calculates the fatigue degree of the driver according to the video information, and the first CAN signal transceiver transmits the obtained fatigue degree of the driver to the second CAN signal transceiver through a CAN network;
the first control chip acquires a current risk level corresponding to the fatigue degree of the driver according to a preset risk level table, and sends the current risk level to the second control chip through the LIN signal transceiver;
and the second control chip controls the tricolor light-emitting diodes to output mixed light according to a preset proportion according to the current risk level so as to inhibit the generation of melanism of a driver.
Further, the step of calculating the fatigue degree of the driver by the image processing unit according to the video information comprises the following steps:
the image processing unit acquires the blink frequency, the heart rate information and the body temperature information of a driver according to the video information, and acquires the fatigue degree of the current driver according to the blink frequency, the heart rate information and the body temperature information.
Further, the step of controlling the three-primary-color light emitting diode to output mixed light according to a preset proportion by the second control chip according to the current risk level to inhibit the generation of the driver melatonin by the second control chip comprises:
if the fatigue degree of the driver is 0-30%, the risk level acquired by the second control chip is first grade, the second control chip controls an HV0 end to output a PWM signal and outputs a first preset duty ratio, and simultaneously controls an HV1 end and an HV2 end not to output, and the mixed light is red light with low color temperature;
if the fatigue degree of the driver is 30% -70%, the risk level acquired by the second control chip is of a second level, at this time, the second control chip respectively controls an HV0 end, an HV1 end and an HV2 end to output PWM signals and outputs a second preset duty ratio, and at this time, the mixed light is white light with medium color temperature;
if the fatigue degree of the driver is more than 70%, the risk level acquired by the second control chip is three levels, the second control chip controls the output of the HV2 end and outputs a third preset duty ratio, meanwhile, the HV0 end and the HV1 end are controlled not to output, and at the moment, the mixed light is blue light with high color temperature.
Further, the method further comprises:
when the target vehicle is switched to a safe driving mode, the third control chip sends a preset message to the fatigue detection module, the vehicle body control module and the instrument display module through the third CAN signal transceiver respectively so as to wake up the fatigue detection module, the vehicle body control module and the instrument display module.
Further, the method further comprises:
when the instrument display module is awakened, the fourth control chip receives the driver fatigue degree and the risk level sent by the vehicle body control module through the fourth CAN signal transceiver, and sends early warning information to the display screen according to the risk level and the driver fatigue degree so as to prompt the driver.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
Fig. 1 is a schematic structural diagram of a lighting control system for safe driving according to a first embodiment of the present invention;
FIG. 2 is a circuit diagram of a fatigue detection module, a vehicle body control module and an instrument display module according to a first embodiment of the present invention;
FIG. 3 is a circuit diagram of a meter display module and an in-vehicle entertainment module according to a first embodiment of the present invention;
FIG. 4 is a circuit diagram of a lighting control module according to a first embodiment of the present invention;
fig. 5 is a flowchart of a lighting control method for safe driving according to a second embodiment of the present invention.
The following detailed description will further illustrate the invention in conjunction with the above-described figures.
Detailed Description
To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Several embodiments of the invention are presented in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Referring to fig. 1 and 2, there is shown a schematic structural diagram of a lighting control system for safe driving in a first embodiment of the present invention, the system includes a fatigue detection module 10, a vehicle body control module 20, a light control module 30, a meter display module 50 and a vehicle-mounted entertainment module 40, wherein:
the in-vehicle entertainment module 40 comprises a third control chip and a third CAN-signal transceiver connected to said third control chip, the third CAN signal transceiver is respectively connected with the first CAN signal transceiver and the fourth CAN signal transceiver of the second CAN signal transceiver through a CAN network, when the in-vehicle entertainment module 40 is powered on, the user enters a safe driving mode by controlling the in-vehicle entertainment module 40, the electric control chip sends preset messages to the fatigue detection module 10, the vehicle body control module 20 and the instrument display module 50 through the third CAN signal transceiver, in this embodiment, the preset message is a network management message, by continuously sending the network management message with a fast period to the module, to wake up the fatigue detection module 10, the vehicle body control module 20, and the meter display module 50, thereby putting each module into a working module.
This fatigue degree detection module 10 includes image processing unit and respectively with image acquisition unit, the first CAN signal transceiver that image processing unit connects, in this embodiment, image acquisition unit is used for the image signal of real-time acquisition driver, and image processing unit is used for calculating according to the image signal that image acquisition unit gathered and obtains driver fatigue degree, and first CAN signal transceiver sends the fatigue degree that obtains to automobile body control module 20 through the CAN network.
The vehicle body control module 20 comprises a first control chip, a second CAN signal transceiver and a LIN signal transceiver, wherein the second CAN signal transceiver and the LIN signal transceiver are respectively connected with the first control chip, the second CAN signal transceiver is connected with the first CAN signal transceiver through a CAN network, the second CAN signal transceiver is used for receiving the fatigue degree of a driver sent by the first CAN signal transceiver, the first control chip is used for calculating a risk level according to the obtained fatigue degree of the driver, controlling the second CAN signal transceiver to send the fatigue degree and the risk level of the driver to the instrument display module 50, and meanwhile, the first control chip controls the LIN signal transceiver to send the current risk level to the light control module 30.
The light control module 30 includes a second control chip and a three-primary-color light emitting diode, an LIN end of the second control chip is connected with an output end of the LIN transceiver, so as to effectively receive a risk level sent by the vehicle body control module 20, a VS end of the second control chip is connected with an input end of the three-primary-color light emitting diode, an output end of the three-primary-color light emitting diode is connected with an HV end of the second control chip, and the second control chip is used for controlling the three-primary-color light emitting diode to emit mixed light with a preset proportion according to the risk level so as to suppress generation of melatonin of a driver, wherein according to research, when a high-color temperature light source is comprehensively acted on intrinsic photosensitive retinal ganglion cells, the generation of melatonin of a pineal body can be suppressed, so that the concentration of the melatonin in human blood is reduced, and the concentration of the melatonin in the human blood is lower, the second control chip can play a role in reducing the fatigue of the driver by controlling the tricolor light emitting diode to emit mixed light for inhibiting melatonin.
This instrument display module 50 include fourth control chip and with fourth CAN signal transceiver, the display screen that fourth control chip connects, fourth CAN signal transceiver respectively with second CAN signal transceiver, third CAN signal transceiver are connected, fourth CAN signal transceiver is used for receiving current driver fatigue degree and the risk grade that corresponds, fourth control chip is used for the basis current driver fatigue degree and the risk grade that corresponds generate early warning signal, and will early warning signal send to the display screen to remind the driver.
Further, the light control module 30 further includes a power supply, a reverse diode, an ESD tube, and a TVS tube, wherein the power supply is connected to the input of the reverse diode, the output of the reverse diode is connected to the VS end of the TVS tube and the second control chip, the ESD tube is connected to the output of the LIN signal transceiver and the LIN end of the second control chip, the reverse diode is prevented by setting to effectively prevent the current from being sent backwards, the TVS tube is set to perform a fast overvoltage protection on the circuit of the light control module 30, and the ESD tube is used for preventing static electricity from damaging the LIN signal transceiver.
Further, the three primary color light emitting diodes include red, green and blue light emitting diodes, the red, green and blue light emitting diodes are respectively connected with the HV0 end, the HV1 end and the HV2 end of the second control chip through an NPN triode, one end of any NPN triode is connected with the HV end of the second control chip through a resistor, and the other ends of the three NPN triodes are also respectively connected with the output end of the three primary color light emitting diodes through a resistor.
Preferably, please refer to fig. 2 to 4, which are circuit diagrams of the lighting control system for safe driving in the present embodiment, wherein the first, second, third and fourth control chips are all MLX81106 in model number; the image acquisition unit is an infrared camera; the image processing unit is an SOC processing system; the LED is a tricolor LED with the model of LRTB-GVGG-UEVE-24; d1 is an anti-reverse diode; d2 is an ESD tube, model PESD1 LIN; d3 is TVS tube, its model number is 5.0SMDJ 18A; c3 is a 220pF capacitor, C1 is a 100nF capacitor, C2 is 2.2Uf, and C1, C2 and C3 are all ceramic capacitors; r1, R2, R3, R7, R8 and R9 are all 2.2 Kohm; r4, R5, R6 are all 330 ohm; q1, Q2 and Q3 are NPN triodes, and the models of the NPN triodes are BC 817-40.
In summary, according to the lighting control system for safe driving described above, the non-visual photo-biological effect is utilized to suppress the generation of melatonin of the driver, so as to achieve the effect of alleviating the fatigue of the driver and ensure the driving safety. Specifically, the image acquisition unit acquires a face image of a driver in real time to generate image information, the image information is sent to the image processing unit, so that the current fatigue of the driver is obtained through calculation, the first control module acquires a risk level according to the current fatigue of the driver and sends the risk level to the second control chip through the LIN signal transceiver, and the second control chip controls the three-primary-color light emitting diodes to emit mixed light according to the current risk level so as to inhibit the generation of melatonin of the driver, so that the driver is stimulated to be conscious and excited, and the driving safety potential hazard caused by fatigue driving is effectively solved.
Referring to fig. 2, a flowchart of a lighting control method for safe driving in a second embodiment of the present invention is shown, the method includes steps S01 to S04, wherein:
step S01: when the target vehicle is switched to a safe driving mode, the third control chip sends a preset message to the fatigue detection module, the vehicle body control module and the instrument display module through the third CAN signal transceiver respectively so as to wake up the fatigue detection module, the vehicle body control module and the instrument display module.
It CAN be understood that after the vehicle-mounted entertainment module is powered on, the safe driving mode in the vehicle-mounted entertainment module is started, at the moment, the third control chip actively controls the self to wake up, and sends preset messages to the first CAN signal transceiver, the second CAN signal transceiver and the fourth CAN signal transceiver through the third CAN signal transceiver respectively so that the fatigue degree detection module, the vehicle body control module and the instrument display module enter the working state.
Step S02: when the fatigue detection module is awakened, the image acquisition unit continuously acquires the face image of the driver every a first preset time to generate video information, the image processing unit calculates the fatigue degree of the driver according to the video information, and the first CAN signal transceiver transmits the obtained fatigue degree of the driver to the second CAN signal transceiver through a CAN network.
It can be understood that the first preset time is related to a specific driving environment and a driving habit of a driver, and is not limited in detail in this embodiment, the image acquisition unit acquires a face image of the driver in real time, the image processing unit acquires blink frequency, heart rate information and body temperature information of the driver according to the video information, and acquires a current fatigue degree of the driver according to the blink frequency, the heart rate information and the body temperature information.
Step S03: the first control chip acquires a current risk level corresponding to the fatigue degree of the driver according to a preset risk level table, and sends the current risk level to the second control chip through the LIN signal transceiver;
it can be understood that, in the present embodiment, the setting conditions of the preset risk level table are as follows: when the fatigue degree of the driver is 0-30%, setting the driver as a first-level risk; when the fatigue degree of the driver is 30% -70%, setting as a secondary risk; when the driver fatigue is 70% -1005%, three-level risk is set.
Furthermore, because the instrument display module is awakened by the vehicle-mounted entertainment module, the instrument display module CAN communicate with the vehicle body control module through the CAN network, namely, the fourth control chip receives the driver fatigue degree and the risk level sent by the vehicle body control module through the fourth CAN signal transceiver and sends out early warning information to the display screen according to the risk level and the driver fatigue degree, so that the effect of prompting the driver to reduce the vehicle speed and paying attention to driving safety is achieved.
Step S04: and the second control chip controls the tricolor light-emitting diodes to output mixed light according to a preset proportion according to the current risk level so as to inhibit the generation of melanism of a driver.
By way of example and not limitation, in this embodiment, if the fatigue degree of the driver is 0 to 30%, the risk level acquired by the second control chip is one level, at this time, the second control chip controls the HV0 terminal to output a PWM signal and outputs a first preset duty ratio, and controls the HV1 terminal and the HV2 terminal not to output at the same time, at this time, the light control module emits red light with a low color temperature, and the luminance of the mixed light is 5cd/m2。
If the fatigue degree of the driver is 30% -70%, the risk level acquired by the second control chip is of a second level, and at the moment, the second control chip respectively controls an HV0 end, an HV1 end and an HV2 end to output PWM signals and outputs a second preset duty ratioAt the moment, the light control module emits white light with medium color temperature, and the brightness of the mixed light is 7cd/m2。
If the fatigue degree of the driver is more than 70%, the risk level acquired by the second control chip is three-level, the second control chip controls the HV2 end to output, outputs a third preset duty ratio, and controls the HV0 end and the HV1 end not to output, and the light control module emits blue light with high color temperature at the moment, and the brightness of the mixed light is 10cd/m2。
In conclusion, according to the lighting control method for safe driving, the non-visual photo-biological effect is utilized to inhibit the generation of melatonin of the driver, so that the effect of relieving the fatigue of the driver is achieved, and the driving safety is ensured. Specifically, the image acquisition unit acquires a face image of a driver in real time to generate image information, the image information is sent to the image processing unit, so that the current fatigue of the driver is obtained through calculation, the first control module acquires a risk level according to the current fatigue of the driver and sends the risk level to the second control chip through the LIN signal transceiver, and the second control chip controls the three-primary-color light emitting diodes to emit mixed light according to the current risk level so as to inhibit the generation of melatonin of the driver, so that the driver is stimulated to be conscious and excited, and the driving safety potential hazard caused by fatigue driving is effectively solved.
Those of skill in the art will understand that the logic and/or steps represented in the flowcharts or otherwise described herein, e.g., an ordered listing of executable instructions that can be viewed as implementing logical functions, can be embodied in any computer-readable medium for use by or in connection with an instruction execution system, apparatus, or device, such as a computer-based system, processor-containing system, or other system that can fetch the instructions from the instruction execution system, apparatus, or device and execute the instructions. For the purposes of this description, a "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device.
More specific examples (a non-exhaustive list) of the computer-readable medium would include the following: an electrical connection (electronic device) having one or more wires, a portable computer diskette (magnetic device), a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disc read-only memory (CDROM). Additionally, the computer-readable medium could even be paper or another suitable medium upon which the program is printed, as the program can be electronically captured, via for instance optical scanning of the paper or other medium, then compiled, interpreted or otherwise processed in a suitable manner if necessary, and then stored in a computer memory.
It should be understood that portions of the present invention may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, the various steps or methods may be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, any one or combination of the following techniques, which are known in the art, may be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application specific integrated circuit having an appropriate combinational logic gate circuit, a Programmable Gate Array (PGA), a Field Programmable Gate Array (FPGA), or the like.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims (10)

1. A safe driving lighting control system, comprising:
the fatigue detection module comprises an image processing unit, an image acquisition unit and a first CAN signal transceiver, wherein the image acquisition unit and the first CAN signal transceiver are respectively connected with the image processing unit;
the vehicle body control module comprises a first control chip, and a second CAN signal transceiver and a LIN signal transceiver which are respectively connected with the first control chip, wherein the second CAN signal transceiver is connected with the first CAN signal transceiver through a CAN network, and the first control chip is used for calculating a risk level according to the fatigue degree of a driver;
the light control module comprises a second control chip and three-primary-color light-emitting diodes, wherein an LIN end of the second control chip is connected with an output end of the LIN transceiver, a VS end of the second control chip is connected with an input end of the three-primary-color light-emitting diodes, output ends of the three-primary-color light-emitting diodes are connected with an HV end of the second control chip, and the second control chip is used for controlling the three-primary-color light-emitting diodes to emit mixed light with a preset proportion according to the risk level so as to inhibit generation of melatonin of a driver.
2. The lighting control system for safe driving according to claim 1, further comprising a vehicle-mounted entertainment module, wherein the vehicle-mounted entertainment module comprises a third control chip and a third CAN signal transceiver connected to the third control chip, the third CAN signal transceiver is respectively connected to the first CAN signal transceiver and the second CAN signal transceiver through a CAN network, and when the vehicle-mounted entertainment module is powered on, the electric control chip sends a preset message to the fatigue detection module and the vehicle body control module through the third CAN signal transceiver, so as to wake up the fatigue detection module and the vehicle body control module.
3. The lighting control system for safety driving according to claim 1, further comprising an instrument display module, wherein the instrument display module comprises a fourth control chip, and a fourth CAN signal transceiver and a display screen which are connected with the fourth control chip, the fourth CAN signal transceiver is respectively connected with the second CAN signal transceiver and the third CAN signal transceiver, the fourth CAN signal transceiver is used for receiving the current driver fatigue and the corresponding risk level, and the fourth control chip is used for generating an early warning signal according to the current driver fatigue and the corresponding risk level and sending the early warning signal to the display screen to remind the driver.
4. The lighting control system for safe driving according to claim 1, wherein the lighting control module further comprises a power supply, an anti-reflection diode, an ESD tube, and a TVS tube, wherein the power supply is connected to an input terminal of the anti-reflection diode, an output terminal of the anti-reflection diode is respectively connected to the TVS tube and a VS terminal of the second control chip, and the ESD tube is respectively connected to an output terminal of the LIN signal transceiver and a LIN terminal of the second control chip.
5. The lighting control system of claim 4, wherein the three primary color LEDs comprise red, green and blue LEDs, and the red, green and blue LEDs are respectively connected to the HV0 terminal, the HV1 terminal and the HV2 terminal of the second control chip via NPN transistors.
6. A control method of a safety driving lighting control system, characterized in that the safety driving lighting control system is the safety driving lighting control system of any one of claims 1-5, the method comprising:
when the fatigue detection module is awakened, the image acquisition unit continuously acquires face images of a driver every a first preset time to generate video information, the image processing unit calculates the fatigue degree of the driver according to the video information, and the first CAN signal transceiver transmits the obtained fatigue degree of the driver to the second CAN signal transceiver through a CAN network;
the first control chip acquires a current risk level corresponding to the fatigue degree of the driver according to a preset risk level table, and sends the current risk level to the second control chip through the LIN signal transceiver;
and the second control chip controls the tricolor light-emitting diodes to output mixed light according to a preset proportion according to the current risk level so as to inhibit the generation of melanism of a driver.
7. The safe-driving illumination control method according to claim 6, wherein the step of calculating the driver fatigue degree by the image processing unit based on the video information comprises:
the image processing unit acquires the blink frequency, the heart rate information and the body temperature information of a driver according to the video information, and acquires the fatigue degree of the current driver according to the blink frequency, the heart rate information and the body temperature information.
8. The lighting control method for safe driving according to claim 6, wherein the step of the second control chip controlling the three primary color light emitting diodes to output mixed light according to the current risk level and the preset ratio to inhibit the generation of melatonin fading of the driver comprises:
if the fatigue degree of the driver is 0-30%, the risk level acquired by the second control chip is first grade, the second control chip controls an HV0 end to output a PWM signal and outputs a first preset duty ratio, and simultaneously controls an HV1 end and an HV2 end not to output, and the mixed light is red light with low color temperature;
if the fatigue degree of the driver is 30% -70%, the risk level acquired by the second control chip is of a second level, at this time, the second control chip respectively controls an HV0 end, an HV1 end and an HV2 end to output PWM signals and outputs a second preset duty ratio, and at this time, the mixed light is white light with medium color temperature;
if the fatigue degree of the driver is more than 70%, the risk level acquired by the second control chip is three levels, the second control chip controls the output of the HV2 end and outputs a third preset duty ratio, meanwhile, the HV0 end and the HV1 end are controlled not to output, and at the moment, the mixed light is blue light with high color temperature.
9. The safe-driving lighting control method according to claim 6, characterized in that the method further comprises:
when the target vehicle is switched to a safe driving mode, the third control chip sends a preset message to the fatigue detection module, the vehicle body control module and the instrument display module through the third CAN signal transceiver respectively so as to wake up the fatigue detection module, the vehicle body control module and the instrument display module.
10. The safe-driving lighting control method according to claim 6, characterized in that the method further comprises:
when the instrument display module is awakened, the fourth control chip receives the driver fatigue degree and the risk level sent by the vehicle body control module through the fourth CAN signal transceiver, and sends out early warning information to the display screen according to the risk level and the driver fatigue degree so as to prompt the driver.
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