WO2017141395A1 - Dispositif de commande de distribution de lumière, procédé de commande de distribution de lumière, et programme de commande de distribution de lumière - Google Patents

Dispositif de commande de distribution de lumière, procédé de commande de distribution de lumière, et programme de commande de distribution de lumière Download PDF

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Publication number
WO2017141395A1
WO2017141395A1 PCT/JP2016/054673 JP2016054673W WO2017141395A1 WO 2017141395 A1 WO2017141395 A1 WO 2017141395A1 JP 2016054673 W JP2016054673 W JP 2016054673W WO 2017141395 A1 WO2017141395 A1 WO 2017141395A1
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WO
WIPO (PCT)
Prior art keywords
vehicle
light distribution
information
distribution control
time
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PCT/JP2016/054673
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English (en)
Japanese (ja)
Inventor
政明 武安
竜 村松
佐藤　直人
善貴 片山
省吾 津崎
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三菱電機株式会社
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Priority to PCT/JP2016/054673 priority Critical patent/WO2017141395A1/fr
Publication of WO2017141395A1 publication Critical patent/WO2017141395A1/fr

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
    • B60Q1/02—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments
    • B60Q1/04—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights
    • B60Q1/06—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights adjustable, e.g. remotely-controlled from inside vehicle
    • B60Q1/08—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights adjustable, e.g. remotely-controlled from inside vehicle automatically
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
    • B60Q1/02—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments
    • B60Q1/04—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights
    • B60Q1/14—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights having dimming means

Definitions

  • the present invention relates to a technique for controlling the light distribution of a vehicle headlamp.
  • the driver may travel with a high beam in order to ensure the maximum field of view.
  • driving with a high beam may dazzle the driver of the vehicle ahead, so the driver travels with a low beam.
  • the light distribution of the low beam is downward, the driver's visibility is greatly reduced compared to the case of the high beam, leading to oversight of pedestrians near the road, road signs, and distant road shapes.
  • Patent Document 1 discloses a technique for performing light distribution control by performing wireless communication such as inter-vehicle communication. That is, in Patent Document 1, forward vehicle information including position information and speed information of the forward vehicle is periodically received by wireless communication such as inter-vehicle communication, and the position of the forward vehicle is estimated based on the forward vehicle information. The light distribution of the headlamps is controlled at the timing when the vehicle enters the high beam irradiation area of the host vehicle so that the driver of the vehicle ahead is not dazzled.
  • the position of the front vehicle is estimated at every acquisition timing of the front vehicle information, and the light distribution control of the headlamps is performed. For this reason, when the acquisition period of the front vehicle information is long, the position of the front vehicle is not estimated for a long time, and therefore the light distribution of the headlamp does not change for a long time. For this reason, there exists a subject that a front vehicle will enter into the irradiation area of the high beam of the own vehicle during the acquisition period of front vehicle information, and will dazzle the driver of a front vehicle.
  • the main object of the present invention is to solve such a problem, and it is a main object to prevent the driver of the vehicle in front of the vehicle from being dazzled by continuously performing light distribution control.
  • the light distribution control device includes: A light distribution control device that is mounted on a vehicle and controls light distribution of a headlamp of the vehicle, Obtained forward vehicle position information used for calculation of the position of the forward vehicle ahead of the vehicle, and obtained a predicted position that is a position of the forward vehicle at a future time after the acquisition time of the forward vehicle position information.
  • a vehicle position calculation unit for calculating using the front vehicle position information;
  • a light distribution control unit that controls light distribution of the headlamp based on the predicted position of the preceding vehicle.
  • the future position of the forward vehicle after obtaining the forward vehicle position information is calculated as the predicted position, and light distribution control is performed based on the predicted position. For this reason, according to this invention, continuous light distribution control can be performed and it can prevent that the driver
  • FIG. 1 is a diagram illustrating a configuration example of a light distribution control system according to Embodiment 1.
  • FIG. 3 is a diagram illustrating a hardware configuration example of a light distribution control device according to the first embodiment.
  • FIG. 3 is a diagram illustrating a configuration example of a ROM of the light distribution control device according to the first embodiment.
  • FIG. 3 is a diagram illustrating a functional configuration example of a light distribution control device according to the first embodiment.
  • FIG. 6 is a diagram illustrating an example of optical unit control information according to the first embodiment.
  • FIG. 3 is a flowchart showing an operation example of the light distribution control apparatus according to the first embodiment.
  • FIG. 3 is a diagram illustrating an example of light distribution control according to the first embodiment. The figure which shows the example of the conventional light distribution control.
  • FIG. *** Explanation of configuration *** FIG. 1 shows a configuration example of a light distribution control system 100 according to the present embodiment.
  • the light distribution control system 100 is mounted on the vehicle 1000.
  • the light distribution control system 100 includes a light distribution control device 1, optical units 50 and 60, a wireless communication device 400, an in-vehicle camera 410, a GPS (Global Positioning System) receiver 420, and a vehicle speed sensor 430.
  • a wireless communication device 400 the wireless communication device 400, the in-vehicle camera 410, the GPS receiver 420, and the vehicle speed sensor 430 may be shared with other systems in the vehicle 1000.
  • the light distribution control device 1 performs light distribution control of the headlamps 530 and 630 included in the optical units 50 and 60 based on the relative position of the preceding vehicle with respect to the vehicle 1000. More specifically, the light distribution control device 1 receives information related to the position of the preceding vehicle, information related to the vehicle speed, information related to the traveling direction, information related to the position of the vehicle 1000, and vehicle speed received from the wireless communication device 400 or the in-vehicle camera 410. The light distribution area is determined based on the information, and the light distribution control of the headlamps 530 and 630 is performed. The operation of the light distribution control device 1 corresponds to a light distribution control method.
  • the optical units 50 and 60 are installed in front of the vehicle 1000 and are used to irradiate light in front of the vehicle 1000.
  • the unit controller 510 controls lighting / extinguishing of the headlamp 530 via the lighting circuit 520.
  • the unit controller 610 controls lighting / extinguishing of the headlamp 630 via the lighting circuit 620.
  • a plurality of light sources are set for each of the headlamps 530 and 630.
  • the unit controllers 510 and 610 provide the headlamps 530 and 630 by giving control signals to the lighting circuits 520 and 620 based on the control information received from the light distribution control device 1 (information instructing to turn on and off each light source). Controls on / off and brightness of individual light sources.
  • the optical units are configured one by one on the left and right, but the number of optical units may be one, or three or more. Further, the light distribution control device 1 and the optical units 50 and 60 may be connected by a network.
  • the wireless communication device 400 performs wireless communication. Specifically, the wireless communication device 400 performs wireless communication with a wireless communication device mounted on a preceding vehicle.
  • the in-vehicle camera 410 images the space in front of the vehicle 1000.
  • the in-vehicle camera 410 detects information related to the relative position of the vehicle ahead of the vehicle 1000 by performing image processing on the captured image.
  • the vehicle-mounted camera 410 detects the information regarding the position of the headlight of the vehicle ahead based on the captured image.
  • the GPS receiver 420 acquires information related to the position of the vehicle 1000.
  • the vehicle speed sensor 430 acquires information regarding the vehicle speed of the vehicle 1000.
  • FIG. 2 shows a hardware configuration example of the light distribution control device 1 according to the present embodiment.
  • the light distribution control device 1 is a computer including a microcomputer 10, a nonvolatile memory 12, a communication unit 13, and an input / output unit 18.
  • the microcomputer 10 includes a CPU (Central Processing Unit) 11, a ROM (Read Only Memory) 20, and a RAM (Random Access Memory) 30.
  • a program is stored in the ROM 20. The program is loaded into the RAM 30 and executed by the CPU 11. Details of the program will be described later.
  • the communication unit 13 is an interface circuit for communication with the network 40 in the vehicle 1000.
  • the input / output unit 18 is an interface circuit for input / output with the optical units 50 and 60 to be controlled. 2 shows a configuration in which the CPU 11 is included in the microcomputer 10. However, the CPU 11 may not be included in the microcomputer 10 as long as the CPU 11 can execute the program.
  • FIG. 3 shows a configuration example of the ROM 20 of the light distribution control device 1 according to the present embodiment.
  • the ROM 20 stores an application program 210 and a platform program 220.
  • the application program 210 is a program for controlling the optical units 50 and 60 that are objects of control of the light distribution control device 1.
  • the application program 210 corresponds to a light distribution control program.
  • the platform program 220 is a program that directly controls hardware.
  • the platform program 220 includes an OS (Operating System) and a device driver.
  • the ROM 20 includes a control information storage unit 230.
  • the control information storage unit 230 stores optical unit control information 231.
  • the optical unit control information 231 is used in light distribution control processing by the application program 210. Details of the optical unit control information 231 will be described later.
  • the optical unit control information 231 is stored in the ROM 20, but the optical unit control information 231 may be stored in the nonvolatile memory 12 or stored in both the ROM 20 and the nonvolatile memory 12. May be.
  • FIG. 4 shows a functional configuration example of the light distribution control device 1 according to the present embodiment.
  • FIG. 4 schematically illustrates a state in which the CPU 11 is executing the vehicle position calculation unit 211 and the light distribution control unit 212 included in the application program 210.
  • the functions of the vehicle position calculation unit 211 and the light distribution control unit 212 will be described as operations of the vehicle position calculation unit 211 and the light distribution control unit 212.
  • the program 210 By executing the program 210, the following functions of the vehicle position calculation unit 211 and the light distribution control unit 212 are realized.
  • the vehicle position calculation unit 211 calculates a future position of the forward vehicle (hereinafter referred to as a predicted position). Specifically, the vehicle position calculation unit 211 acquires the forward vehicle information transmitted from the wireless communication device of the preceding vehicle via the wireless communication device 400 and the communication unit 13. And the vehicle position calculation part 211 calculates the position of the front vehicle in the future time after the acquisition time of front vehicle information as a predicted position of the front vehicle.
  • the forward vehicle information is information used to calculate the position of the forward vehicle.
  • the forward vehicle information includes information related to the position of the forward vehicle, information related to speed, information related to the traveling direction, and the like.
  • the vehicle position calculation unit 211 acquires the preceding vehicle information at an acquisition cycle corresponding to the transmission cycle.
  • the future time is a time after the acquisition time of the acquired forward vehicle position information and before the next acquisition time of the forward vehicle position information.
  • the vehicle position calculation unit 211 extracts the position of the forward vehicle included in the forward vehicle information as the current position of the forward vehicle.
  • the vehicle position calculation unit 211 calculates a future position of the vehicle 1000 (hereinafter referred to as a predicted position). Specifically, the vehicle position calculation unit 211 acquires vehicle information generated by the GPS receiver 420 and the vehicle speed sensor 430 via the communication unit 13.
  • the vehicle position calculation unit 211 calculates the position of the vehicle 1000 at the future time as the predicted position of the vehicle 1000.
  • the vehicle information is information used for calculating the position of the vehicle 1000.
  • the vehicle information includes information related to the position of the vehicle 1000, information related to speed, and the like.
  • the vehicle position calculation unit 211 extracts the position of the vehicle 1000 included in the vehicle information as the current position of the vehicle 1000.
  • the vehicle position calculation unit 211 can extract the current position of the vehicle 1000 corresponding to the current position of the preceding vehicle by acquiring the vehicle information in synchronization with the acquisition period of the preceding vehicle information.
  • the predicted position of the vehicle 1000 corresponding to the predicted position of the preceding vehicle can be calculated.
  • the vehicle position calculation unit 211 can calculate the predicted position of the preceding vehicle and the predicted position of the vehicle 1000 by, for example, linear extrapolation. In addition, the vehicle position calculation unit 211 calculates the current relative position of the preceding vehicle with respect to the vehicle 1000 from the current position of the preceding vehicle and the current position of the vehicle 1000. Further, the vehicle position calculation unit 211 calculates a relative position (predicted relative position) at a future time of the forward vehicle with respect to the vehicle 1000 from the predicted position of the forward vehicle and the predicted position of the vehicle 1000. The vehicle position calculation unit 211 notifies the light distribution control unit 212 of the calculated current relative position and predicted relative position. The operation of the vehicle position calculation unit 211 corresponds to a vehicle position calculation process.
  • the light distribution control unit 212 controls the light distribution of the headlamps 530 and 630.
  • the light distribution control unit 212 controls the light distribution of the headlamps 530 and 630 using the current relative position and the predicted relative position calculated by the vehicle position calculation unit 211. That is, the light distribution control unit 212 controls the light distribution of the headlamps 530 and 630 based on the current position of the preceding vehicle and the current position of the vehicle 1000, the predicted position of the preceding vehicle, and the predicted position of the vehicle 1000.
  • the light distribution control unit 212 includes a light distribution region determination unit 213, a light adjustment determination unit 214, and a device control unit 215, which will be described later.
  • the operation in the light distribution control unit 212 corresponds to a light distribution control process.
  • the vehicle position calculation unit 211 uses information on the relative position of the forward vehicle with respect to the vehicle 1000 (hereinafter referred to as relative position information) obtained by analyzing the captured image of the in-vehicle camera 410 instead of using the forward vehicle information and the vehicle information. May be used. In this case, the vehicle position calculation unit 211 calculates the relative position of the preceding vehicle with respect to the vehicle 1000 at a future time after the acquisition time of the relative position information as the predicted relative position. Further, the vehicle position calculation unit 211 extracts the relative position of the preceding vehicle with respect to the vehicle 1000 included in the relative position information as the current relative position. Both the forward vehicle information and the relative position information are information used for calculating the position of the forward vehicle, and correspond to an example of the forward vehicle position information.
  • the optical unit control information 231 shown in FIG. 3 is composed of dimming control information 2301 and light source control information 2302.
  • the light control information 2301 is information illustrated in FIG. 5A
  • the light source control information 2302 is information illustrated in FIG. Details of the dimming control information 2301 and details of the light source control information 2302 will be described later.
  • the wireless communication device 400 receives information on the front vehicle including information on the position of the preceding vehicle, information on the speed, information on the traveling direction, information on the angle in the pitch direction, information on the angle in the yaw direction, and information on the vehicle classification through wireless communication. To do.
  • the wireless communication device 400 transmits forward vehicle information to the light distribution control device 1 through the network 40 in the vehicle 1000.
  • the information related to the vehicle classification is information for determining what the front vehicle corresponds to, such as a passenger car, a light vehicle, a large vehicle such as a bus or a truck.
  • the in-vehicle camera 410 analyzes a captured image obtained by photographing the front of the vehicle 1000, and obtains information on the relative position of the vehicle ahead of the vehicle 1000 (relative position information) and information on the position of the headlight of the vehicle ahead in the network 40. To the light distribution control device 1.
  • the GPS receiver 420 transmits information regarding the position of the vehicle 1000 to the light distribution control device 1 through the network 40 as vehicle information.
  • the vehicle speed sensor 430 transmits information related to the speed of the vehicle 1000 to the light distribution control device 1 through the network 40 as vehicle information.
  • the light distribution control device 1 can acquire the above information group via the network 40, the source of the information may not be as described above. In addition, the light distribution control device 1 may acquire the above information group from a device other than the above device.
  • the light distribution control device 1 calculates the current relative position of the forward vehicle with respect to the vehicle 1000 and the predicted relative position of the forward vehicle at the future time with respect to the vehicle 1000 using the forward vehicle information and the vehicle information or the relative position information. . Further, the light distribution control device 1 determines the light distribution possible area and the light intensity in the light distribution possible area based on the current relative position and the predicted relative position, and outputs control information to the optical units 50 and 60. The operation of the light distribution control device 1 will be described in detail later.
  • the optical units 50 and 60 generate power for turning on / off the light sources in the headlamps 530 and 630 based on the control information output from the light distribution control device 1. Moreover, the optical units 50 and 60 drive each light source by supplying electric power to each light source individually or simultaneously. In addition, the optical units 50 and 60, for example, by changing the supply current value or performing PWM (Pulse Width Modulation) control in power supply for driving each light source, brightness when each light source is turned on. Make changes.
  • PWM Pulse Width Modulation
  • the vehicle position calculation unit 211 calculates a current relative position and a predicted relative position at a future time based on forward vehicle information and vehicle information or relative position information.
  • the forward vehicle information includes position information and speed information of the forward vehicle at a certain time t0.
  • the vehicle position calculation unit 211 extracts the position (current position) of the forward vehicle at time t0 from the forward vehicle information, and further, the time t1 (future time) after the lapse of a specified time from the time t0 based on the forward vehicle information.
  • the position (predicted position) of the preceding vehicle at is calculated.
  • the vehicle position calculation unit 211 may calculate the predicted position of the forward vehicle on the assumption that the speed of the forward vehicle is constant, and may use the forward vehicle information acquired in the past and the forward vehicle information acquired this time to The predicted position of the vehicle ahead may be calculated by calculating the acceleration of the vehicle. Similarly, the vehicle position calculation unit 211 extracts the current position of the vehicle 1000 and calculates the predicted position of the vehicle 1000.
  • the vehicle information includes position information and speed information of the vehicle 1000 at time t0.
  • the vehicle position calculation unit 211 extracts the position (current position) of the vehicle 1000 at time t0 from the vehicle information, and further determines the position (predicted position) of the vehicle 1000 at time t1 (future time) based on the vehicle information. calculate.
  • the vehicle position calculation unit 211 may calculate the predicted position of the vehicle 1000 using the drive angle of the steering wheel, the brake operation, and the access operation information. In this way, the vehicle position calculation unit 211 determines the relative position of the preceding vehicle and the vehicle 1000 (from the vehicle 1000) at the time t1 based on the predicted position of the preceding vehicle and the predicted position of the vehicle 1000 at the time t1 after the lapse of the specified time from the current time. The position of the front vehicle seen) can be predicted.
  • the vehicle position calculation unit 211 uses the relative position information from the in-vehicle camera 410 to predict the relative position at time t1 (future time) after the lapse of the specified time from the current time. At this time, the vehicle position calculation unit 211 uses the relative position information acquired from the previous vehicle-mounted camera 410 and the relative position information acquired from the current vehicle-mounted camera 410 to change the relative position of the preceding vehicle and the vehicle 1000. Based on the above, the relative speed between the preceding vehicle and the vehicle 1000 is obtained, and the relative position at time t1 is predicted.
  • the vehicle position calculation unit 211 may predict the relative position at time t1 using the relative speed information.
  • the specified time time from time t0 to time t1
  • the specified time can be determined from the information acquisition interval from the wireless communication device 400 or the in-vehicle camera 410.
  • the time obtained by dividing the information acquisition interval from the wireless communication device 400 or the in-vehicle camera 410 may be set as the specified time.
  • the light distribution area determination unit 213 determines the light beam distribution possible range at the time t1 from the relative position of the vehicle ahead and the vehicle 1000 at the time t1 obtained by the vehicle position calculation unit 211. For example, the light distribution region determination unit 213 divides a range that can be irradiated by the optical units 50 and 60 into arbitrary blocks. Moreover, the light distribution area
  • the dimming determination unit 214 determines the luminous intensity for each block based on the presence / absence of the preceding vehicle for each block and the relative position to the preceding vehicle at the time t1 obtained by the light distribution region determination unit 213, and the dimming control information 2301.
  • the dimming determination unit 214 determines a predetermined maximum luminous intensity for a block in which no vehicle ahead exists.
  • the dimming determination unit 214 determines the luminous intensity based on the luminous intensity that can be irradiated at the relative position between the vehicle 1000 and the preceding vehicle described in the dimming control information 2301.
  • the light distribution region determination unit 213 performs the same process on the current relative position.
  • the device control unit 215 generates control information for the optical units 50 and 60 based on the light intensity for each block at the time t1 obtained by the dimming determination unit 214 and the light source control information 2302. Specifically, the device control unit 215 first determines lighting / extinguishing for each light source in the block based on the light intensity for each block at time t1. In addition, the device control unit 215 divides the interval from the current time to time t1 in accordance with the cycle of outputting control information to the optical units 50 and 60 (hereinafter referred to as the control cycle), and sets the division interval obtained by the division. Thus, the light intensity at each division interval is determined so as to gradually change from the current light intensity to the light intensity determined by the dimming determination unit 214.
  • the device control unit 215 performs control to gradually change the luminous intensity of the headlamp so that the luminous intensity determined by the dimming determining unit 214 is obtained at time t1.
  • the device control unit 215 determines a current value or a PWM control value for outputting the calculated luminous intensity based on the light source control information 2302. That is, the device control unit 215 determines a current value or a PWM control value for outputting the luminous intensity obtained for the division interval for each division interval. Then, the device control unit 215 generates control information representing the determined current value or PWM control value for each light source, and outputs the generated control information to the optical units 50 and 60 via the platform program 220.
  • the device control unit 215 divides the interval from the current time to the time t1 in accordance with the control cycle.
  • the light intensity change timing information in which the division interval is defined may be stored in the light source control information 2302 in advance, and the device control unit 215 may refer to the light intensity change timing information.
  • the device control unit 215 also determines a current value or PWM control value for the light intensity of each block determined by the dimming determination unit 214 with respect to the current relative position, and the determined current value or PWM control value.
  • the control information indicating is output.
  • the light intensity of the high beam can be gradually changed even when the front vehicle position information (front vehicle information, relative position information) is not acquired. Further, even when the characteristics of the optical units 50 and 60 that are the control targets of the light distribution control device 1 are changed, the light source control information 2302 referred to by the device control unit 215 is simply changed, so that the optical units 50 and 60 can be controlled. It is possible to cope with characteristic changes.
  • FIG. 5 shows an example of the optical unit control information 231 stored in the light distribution control device 1.
  • FIG. 5A shows an example of the dimming control information 2301.
  • Dimming control information 2301 can irradiate the vehicle type of the preceding vehicle such as the oncoming vehicle and the preceding vehicle, the relative position between the vehicle 1000 and the preceding vehicle, including the linear distance between the preceding vehicle and the vehicle 1000 and the horizontal angle. It is a table that includes various luminosities.
  • FIG. 5B shows an example of the light source control information 2302.
  • the light source control information 2302 indicates the electrical characteristics of each light source mounted in the optical units 50 and 60. In the example of FIG. 5B, the relationship between the luminous intensity and the value of the current flowing through the light source is defined.
  • the light source control information 2302 may define a relationship between luminous intensity and PWM value.
  • the light distribution control device 1 calculates the current relative position based on the forward vehicle information and the vehicle information every time the vehicle information and the vehicle information are acquired, and performs light distribution control based on the current relative position. Since this procedure is the same as that conventionally performed, description thereof is omitted. That is, hereinafter, a procedure for calculating the predicted relative position based on the forward vehicle information and the vehicle information and performing the light distribution control based on the predicted relative position will be described.
  • step S111 the vehicle position calculation unit 211 acquires the forward vehicle information and the vehicle information from the communication unit 13.
  • step S112 the vehicle position calculation unit 211 determines whether or not a forward vehicle exists. Specifically, the vehicle position calculation unit 211 determines that the preceding vehicle exists when the preceding vehicle information can be acquired in step S111, and determines that the preceding vehicle does not exist when the preceding vehicle information cannot be acquired. .
  • the vehicle position calculation unit 211 predicts the relative position between the preceding vehicle and the vehicle 1000 at time t1 after a specified time from the current time based on the preceding vehicle information and the vehicle information in step S113. Further, the vehicle position calculation unit 211 outputs the predicted relative position to the light distribution region determination unit 213.
  • step S114 the light distribution region determination unit 213 determines the presence or absence of a forward vehicle for each block in the irradiable range of the vehicle 1000 based on the predicted relative position at time t1. Moreover, the light distribution area
  • step S115 the dimming determination unit 214 uses the presence / absence of the preceding vehicle for each block obtained in step S114, the relative position of the block with respect to the preceding vehicle, and the dimming control information 2301. Determine the intensity of each.
  • step S116 the dimming determination unit 214 sets the luminous intensity for each block to the maximum luminous intensity.
  • Step S117 and subsequent steps are the same as the processing in the case where a forward vehicle is present in step S112.
  • step S117 the device control unit 215 determines lighting / extinguishing for each light source in the block based on the light intensity for each block at time t1.
  • step S118 the device control unit 215 divides the interval from the current time to time t1 in accordance with the control cycle, and the dimming determination unit 214 determines the current light intensity at the division interval obtained by the division.
  • the light intensity at each division interval is determined so as to gradually change to the light intensity.
  • the interval from the current time to time t1 is divided with reference to the light intensity change timing.
  • the luminous intensity at each division interval may be changed linearly or may be changed gently using an exponential function.
  • step S119 the device control unit 215 refers to the light source control information 2302 for each control period for the optical units 50 and 60 from the current time to time t1, and generates control information for the optical units 50 and 60.
  • the generated control information is output to the optical units 50 and 60.
  • step S113 The example in which the vehicle position calculation unit 211 calculates the predicted relative position using the forward vehicle information and the vehicle information in step S113 has been described above. However, the predicted relative position is calculated using the relative position information from the in-vehicle camera 410 in step S113. May be calculated. Even when the relative position information is used, the operations other than step S113 in FIG. 6 are the same.
  • required the predicted relative position of the time t1 using the front vehicle information and vehicle information, and performed the light distribution control at the time t1 above, after the time t1, Similarly, the predicted relative position may be calculated for the time (time t2, time t3, etc.), and the light distribution control may be performed at the time after time t1.
  • FIG. 8 is an example of light distribution control when movement prediction is not performed. That is, FIG. 8 shows temporal changes in the irradiation range of the headlamp when the light distribution control according to the present embodiment is not performed.
  • the vehicle A corresponds to the vehicle 1000
  • the vehicle B corresponds to the preceding vehicle.
  • time t0, time tn, and time tn + 1 are acquisition times of the preceding vehicle information in the vehicle A.
  • FIG. 8A shows the positions of vehicles A and B and the range of headlamps of vehicle A at time t0.
  • FIG. 8B shows the positions of vehicles A and B and the range of headlamps of vehicle A at time tn.
  • FIG. 8C shows the positions of vehicles A and B and the range of headlamps of vehicle A at time tn + 1.
  • the vehicle A since the vehicle A switches the light distribution at every acquisition time of the forward vehicle information, the passengers of the vehicle A and the vehicle B are given a visually uncomfortable feeling. Further, for example, since the irradiation range is not changed from time 0 to time tn, the vehicle B is irradiated with a high beam from time 0 to time tn, and the driver of the vehicle B is dazzled.
  • FIG. 7 is an example of light distribution control when movement prediction is performed. That is, FIG. 7 shows a temporal change in the irradiation range of the headlamp when the light distribution control according to the present embodiment is performed.
  • time t1, time t2, and time t3 are times within the acquisition cycle of the forward vehicle information. That is, time t1, time t2, and time t3 are times between time 0 and time n.
  • FIG. 7A shows the positions of vehicles A and B and the range of headlamps of vehicle A at time t0.
  • FIG. 7B shows the range of the headlamp of the vehicle A from time t0 to time tn. As shown in FIG.
  • the light distribution control device 1 calculates the predicted relative position at each of the time t1, the time t2, and the time t3 within the acquisition period of the forward vehicle information. By switching the light distribution continuously at each of time t1, time t2, and time t3, it is possible to reduce the visual discomfort of the passengers of vehicles A and B. Further, since the irradiation range is changed at time t1, time t2, and time t3, the vehicle B is not irradiated with a high beam, and the driver of the vehicle B is not dazzled.
  • the functions of the vehicle position calculation unit 211 and the light distribution control unit 212 are realized by the CPU 11 executing the application program 210.
  • the light distribution control device 1 may be realized by a circuit such as a logic IC (Integrated Circuit), GA (Gate Array), ASIC (Application Specific Integrated Circuit), or FPGA (Field-Programmable Gate Array). . That is, at least some functions of the vehicle position calculation unit 211 and the light distribution control unit 212 may be realized by these electronic circuits.
  • the CPU 11 and the electronic circuit are also collectively referred to as a processing circuit.
  • 1 light distribution control device 10 microcomputer, 11 CPU, 12 nonvolatile memory, 13 communication unit, 14 input / output unit, 20 ROM, 30 RAM, 40 network, 50 optical unit, 60 optical unit, 100 light distribution control system, 210, application program, 211, vehicle position calculation unit, 212, light distribution control unit, 213, light distribution region determination unit, 214, light control determination unit, 215 device control unit, 220 platform program, 230 control information storage unit, 231 optical unit control information, 400 wireless communication device, 410 on-vehicle camera, 420 GPS receiver, 430 vehicle speed sensor, 510 unit control unit, 520 lighting circuit, 530 headlight, 610 unit control unit, 620 lighting circuit, 630 headlight, 100 Vehicle, 2301 dimming control information, 2302 a light source control information.

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

Abstract

L'invention concerne une unité de calcul de position de véhicule (211) qui acquiert des informations de position de véhicule avant utilisées pour calculer la position d'un véhicule avant devant un véhicule, et calcule, au moyen des informations de position de véhicule avant acquises, une position prédite qui est la position du véhicule avant à un instant futur une fois que les informations de position du véhicule avant ont été acquises. Une unité de commande de distribution de lumière (212) commande la distribution de lumière de phares sur la base de la position prédite du véhicule avant.
PCT/JP2016/054673 2016-02-18 2016-02-18 Dispositif de commande de distribution de lumière, procédé de commande de distribution de lumière, et programme de commande de distribution de lumière WO2017141395A1 (fr)

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Cited By (5)

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Publication number Priority date Publication date Assignee Title
WO2019038077A1 (fr) * 2017-08-25 2019-02-28 HELLA GmbH & Co. KGaA Procédé pour commander au moins un module lumineux d'une unité d'éclairage, unité d'éclairage, produit programme d'ordinateur et support lisible par ordinateur
JPWO2021214889A1 (fr) * 2020-04-21 2021-10-28
US11198386B2 (en) * 2019-07-08 2021-12-14 Lear Corporation System and method for controlling operation of headlights in a host vehicle
US11315429B1 (en) 2020-10-27 2022-04-26 Lear Corporation System and method for providing an alert to a driver of a host vehicle
US11485197B2 (en) 2020-03-13 2022-11-01 Lear Corporation System and method for providing an air quality alert to an occupant of a host vehicle

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JP2012001078A (ja) * 2010-06-16 2012-01-05 Koito Mfg Co Ltd 車両用灯具システム、その制御装置および車両用灯具
JP2013082267A (ja) * 2011-10-06 2013-05-09 Denso Corp 車両用前照灯制御装置

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JP2011037414A (ja) * 2009-08-18 2011-02-24 Koito Mfg Co Ltd 車両用前照灯システム
JP2012001078A (ja) * 2010-06-16 2012-01-05 Koito Mfg Co Ltd 車両用灯具システム、その制御装置および車両用灯具
JP2013082267A (ja) * 2011-10-06 2013-05-09 Denso Corp 車両用前照灯制御装置

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019038077A1 (fr) * 2017-08-25 2019-02-28 HELLA GmbH & Co. KGaA Procédé pour commander au moins un module lumineux d'une unité d'éclairage, unité d'éclairage, produit programme d'ordinateur et support lisible par ordinateur
US11014488B2 (en) 2017-08-25 2021-05-25 HELLA GmbH & Co. KGaA Procedure for actuating at least one light module of a light unit, light unit, computer program product and machine-readable medium
US11198386B2 (en) * 2019-07-08 2021-12-14 Lear Corporation System and method for controlling operation of headlights in a host vehicle
US11485197B2 (en) 2020-03-13 2022-11-01 Lear Corporation System and method for providing an air quality alert to an occupant of a host vehicle
JPWO2021214889A1 (fr) * 2020-04-21 2021-10-28
WO2021214889A1 (fr) * 2020-04-21 2021-10-28 三菱電機株式会社 Appareil de commande de phare, procédé de commande de phare et programme de commande de phare
JP7150218B2 (ja) 2020-04-21 2022-10-07 三菱電機株式会社 前照灯制御装置、前照灯制御方法及び前照灯制御プログラム
US11315429B1 (en) 2020-10-27 2022-04-26 Lear Corporation System and method for providing an alert to a driver of a host vehicle

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