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WO2018142593A1 - Dispositif de commande de phare, procédé de commande de phare et programme de commande de phare - Google Patents

Dispositif de commande de phare, procédé de commande de phare et programme de commande de phare Download PDF

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Publication number
WO2018142593A1
WO2018142593A1 PCT/JP2017/004095 JP2017004095W WO2018142593A1 WO 2018142593 A1 WO2018142593 A1 WO 2018142593A1 JP 2017004095 W JP2017004095 W JP 2017004095W WO 2018142593 A1 WO2018142593 A1 WO 2018142593A1
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WO
WIPO (PCT)
Prior art keywords
vehicle body
headlamp
angle
light distribution
irradiators
Prior art date
Application number
PCT/JP2017/004095
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English (en)
Japanese (ja)
Inventor
佑太 和田
伊藤　益夫
Original Assignee
三菱電機株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 三菱電機株式会社 filed Critical 三菱電機株式会社
Priority to PCT/JP2017/004095 priority Critical patent/WO2018142593A1/fr
Publication of WO2018142593A1 publication Critical patent/WO2018142593A1/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
    • B60Q1/10—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 due to vehicle inclination, e.g. due to load distribution

Definitions

  • the present invention relates to a technique for controlling a headlamp of a vehicle.
  • Auto-leveling control is performed in a headlamp system that controls a headlamp of a vehicle.
  • Auto-leveling control is control for adjusting the irradiation range of the headlamp of the own vehicle so as not to dazzle the driver of the oncoming vehicle or the preceding vehicle.
  • the illuminator in the headlamp is rocked by a linear actuator, and the optical axis of the illuminator is mechanically changed. It is moved upward or downward.
  • the main object of the present invention is to solve the above-described problems.
  • the present invention makes it possible to control the illumination range of the headlamp according to the inclination of the vehicle without providing a mechanical element for changing the direction of the optical axis of the illuminator of the headlamp. Main purpose.
  • the headlamp control device is A headlamp provided with a vehicle body and a vehicle body, in which a plurality of irradiators, each of which has an optical axis fixed at a different angle, is provided on the vehicle body, and an angle formed between the vehicle body and the vehicle body, Irradiation range even when the vehicle body is at a specified design angle that is smaller than the maximum angle physically possible on the chassis and the maximum load capacity is greater than the maximum angle taken when mounted on the chassis
  • an illuminator that is located below a reference plane that is a virtual horizontal plane parallel to the chassis that passes through the headlamp is disposed in a vehicle that is included in the plurality of illuminators,
  • a vehicle body angle estimator that estimates a vehicle body angle that is an angle formed by the chassis and the vehicle body; Based on the vehicle body angle estimated by the vehicle body angle estimation unit and the direction of the optical axis of each of the plurality of irradiators, so that the irradiation range of the headlamp is limited to a range
  • a plurality of irradiators each having a fixed optical axis are used.
  • the light distribution of each of the plurality of irradiators is controlled so that the irradiation range of the headlamp is limited to a range equal to or less than the reference plane.
  • the irradiation range of the headlamp can be controlled in accordance with the inclination of the vehicle without providing a mechanical element for changing the direction of the optical axis of the illuminator of the headlamp. it can.
  • FIG. 1 is a schematic diagram of a vehicle according to Embodiment 1.
  • FIG. FIG. 3 is a schematic diagram of the vehicle according to the first embodiment (when tilted).
  • 1 is a system configuration diagram of a headlamp system according to Embodiment 1.
  • FIG. 1 is a functional block diagram of a headlamp system according to Embodiment 1.
  • FIG. 3 shows an arrangement direction of a low beam irradiator according to the first embodiment.
  • FIG. 3 is a hardware configuration diagram of the headlight control device according to the first embodiment.
  • FIG. 3 is a functional block diagram of the headlight control device according to the first embodiment.
  • FIG. 4 is a diagram showing a light distribution pattern at the time of high loading according to the first embodiment.
  • FIG. 4 is a diagram showing a normal light distribution pattern according to the first embodiment.
  • FIG. 3 is a flowchart of system operation according to the first embodiment. The figure which shows the discretization table which concerns on Embodiment 1.
  • FIG. 3 shows the hysteresis control vehicle body angle discretization table which concerns on Embodiment 1.
  • FIG. 3 shows a light distribution table according to the first embodiment.
  • FIG. 3 is a diagram showing a light distribution intensity table according to the first embodiment. The figure which shows the example of arrangement
  • FIG. 5 is a flowchart illustrating an example of generating a light distribution table according to the first embodiment.
  • FIG. 4 is a diagram for explaining a maximum angle that can be physically taken according to the first embodiment.
  • FIG. *** Explanation of configuration *** FIG. 1 schematically shows the structure of a vehicle according to the present embodiment.
  • the vehicle according to the present embodiment includes a vehicle body 11 and a chassis 12.
  • a headlamp system 13 is disposed on the vehicle body 11.
  • the headlamp system 13 includes a headlamp. Details of the headlamp will be described later.
  • a vehicle compartment, a luggage compartment, and the like are installed on the vehicle body 11.
  • the luggage compartment is arranged at the rear portion of the vehicle body 11.
  • elements other than the headlamp system 13 are not directly related to the essence of the present embodiment. For this reason, detailed description of elements other than the headlamp system 13 is omitted.
  • chassis 12 An engine or the like is mounted on the chassis 12. If the distortion of the tire 14 is not taken into consideration, the chassis 12 may be regarded as parallel to the road surface.
  • the elements included in the chassis 12 are not directly related to the essence of the present embodiment. For this reason, detailed description of the elements included in the chassis 12 is omitted.
  • the vehicle body 11 and the chassis 12 are generally connected by a suspension. For this reason, the inclination of a vehicle body and a chassis changes with the inclination of a road surface, the load amount of a human load, etc. In the present embodiment, as shown in FIG.
  • a plane a plane parallel to the road surface on the vehicle body 11
  • B plane a plane parallel to the road surface on the chassis 12
  • a plane a plane parallel to the road surface on the vehicle body 11
  • B plane a plane parallel to the road surface on the chassis 12
  • FIG. 2 shows a situation in which the inclination of the vehicle body 11 and the chassis 12 has changed due to loading of luggage in the luggage compartment.
  • FIG. 2 it can be seen that the A and B surfaces are no longer parallel. If no measures are taken in this situation and the headlamp of the headlamp system 13 is caused to emit light, the upper side of the irradiation range in the state of FIG. 1 is irradiated. For this reason, there is a possibility that the driver of the oncoming vehicle or the vehicle ahead is dazzled.
  • an angle formed between the A surface and the B surface that is, an angle formed between the vehicle body 11 and the chassis 12 is defined as a vehicle body angle.
  • FIG. 3 shows a configuration example of a system mounted on the vehicle according to the present embodiment.
  • the vehicle is equipped with an engine control system, a brake control system, and the like, since it is not directly related to the essence of the present embodiment, in FIG. 3, it is related to the headlamp system 13 and the headlamp system 13. Only the elements to be shown are shown.
  • At least the headlamp system 13 and the acceleration sensor 27 are connected to the network 28.
  • CAN CONTROLLER AREA NETWORK
  • ETHERNET registered trademark
  • the headlamp system 13 and the acceleration sensor 27 connected to the network 28 can transmit and receive network packets to and from each other.
  • the headlamp system 13 controls the headlamp based on a command from a driver or the like, and irradiates light ahead of the vehicle.
  • the headlamp system 13 includes a headlamp control device 21, a headlamp lighting device (left) 22, a headlamp (left) 23, a headlamp lighting device (right) 24, and a headlamp (right) 25.
  • the headlamp control device 21 outputs a control command to the headlamp lighting device (left) 22 and the headlamp lighting device (right) 24 based on an instruction from a driver or the like.
  • the control command is a digital signal.
  • the operation performed by the headlamp control device 21 corresponds to a headlamp control method and a headlamp control program.
  • the headlamp lighting device (left) 22 generates a current signal for turning on or off the headlamp (left) 23 in accordance with the control command based on a control command that is a digital signal from the headlamp control device 21. Output to the headlamp (left) 23.
  • the headlamp lighting device (right) 24 generates a current signal for turning on or off the headlamp (right) 25 in accordance with the control command based on a control command that is a digital signal from the headlamp control device 21.
  • the headlamp (left) 23 is turned on or off based on the current signal from the headlamp lighting device (left) 22.
  • the headlamp (right) 25 is turned on or off based on the current signal from the headlamp lighting device (right) 24.
  • the acceleration sensor 27 measures the acceleration in the longitudinal direction, the lateral direction, and the vertical direction of the vehicle.
  • FIG. 4 is a functional block diagram of the headlamp system 13.
  • headlights are arranged in a pair on the left and right.
  • the headlamp lighting devices are also arranged in a pair on the left and right.
  • the configuration of the headlamp lighting device (left) 22 and the headlamp (left) 23 will be described, but the configuration of the headlamp lighting device (right) 24 and the headlamp (right) 25 is also the headlamp.
  • the configurations of the lighting device (left) 22 and the headlamp (left) 23 are the same.
  • the headlamp lighting device (left) 22 is connected to a power supply system 29 that can supply sufficient power to light the front irradiator 231-232 and the low beam irradiator 233-234.
  • the headlamp lighting device (left) 22 includes a plurality of lighting units 221-224. Based on the digital signal (control command) given from the headlight control device 21, the lighting units 221-224 supply current to the corresponding front illuminators 231-232 or low beam irradiators 233-234 of the headlamp (left) 23. Output a signal.
  • the headlamp (left) 23 includes front irradiators 231-232.
  • the front irradiator 231 irradiates light forward according to the current signal output from the lighting unit 221.
  • the front irradiator 232 irradiates light forward according to the current waveform output from the lighting unit 222.
  • the light source of the front irradiator 231-232 is, for example, a HID (High-Intensity Discharge) lamp or an LED (Light Emitting Diode), but is not limited thereto.
  • HID High-Intensity Discharge
  • LED Light Emitting Diode
  • Each of the front irradiators 231-232 is arranged to irradiate at least a different range in the vehicle pitch direction.
  • the headlamp (left) 23 may include a plurality of front irradiators, or may include only one front irradiator.
  • the headlamp (left) 23 includes low beam irradiators 233-234.
  • the light source of the low beam irradiator 233-234 is the same as that of the front irradiator 231-232. Further, the same technology as that for the front irradiator 231-232 can be used as a technology for projecting light emitted from the light source forward.
  • the arrangement method of the low beam irradiators 233-234 is shown in FIG.
  • Each of the low beam irradiators 233 to 234 is arranged such that the optical axis is downward from any optical axis of the front irradiators 231 to 232.
  • the low beam irradiators 233 to 234 are arranged so as to irradiate a lower side than the reference plane by a critical angle ⁇ and an initial angle ⁇ .
  • the reference plane is a virtual plane that is parallel to the B plane and passes through the headlamp system 13. That is, the reference plane is a virtual horizontal plane parallel to the chassis 12 passing through the headlamp.
  • the critical angle ⁇ is a design limit of an angle formed by the A plane and the B plane.
  • the critical angle ⁇ is defined as A when the vehicle designer is loaded with the maximum load of the vehicle on the vehicle body 11 within a range in which the vehicle body 11 is physically movable on the chassis 12 based on various vehicle specifications. It sets so that it may become larger than the angle which a surface and B surface make.
  • the physically movable range is determined from, for example, the interference relationship between the road surface and the vehicle body 11, the maximum length of the spring used for the suspension, and the like.
  • FIG. 17 shows a state where the road surface and the vehicle body 11 interfere with each other.
  • the maximum load capacity of the vehicle is the weight of the load that can be loaded on the vehicle, is set rationally by the vehicle designer, and is described in the vehicle specifications.
  • the initial angle ⁇ is determined in the safety standard for road transport vehicles (Non-patent Document 1) and the like so that the oncoming vehicle is not dazzled, and the vehicle designer is initially referred to such a safety standard. The angle ⁇ can be determined.
  • the angle is lower by the angle ⁇ + the initial angle ⁇ .
  • the irradiation range of the low beam irradiators 233-234 is lower than the reference plane by the initial angle ⁇ . That is, when the angle formed between the vehicle body 11 and the chassis 12 is smaller than the maximum angle (physically movable range) that the vehicle body 11 can physically take on the chassis 12 and the maximum loading capacity is mounted on the chassis 11.
  • the headlamp (left) 23 may include a plurality of low beam irradiators or may include only one low beam irradiator.
  • FIG. 15 shows an arrangement example of the front irradiators 231-232 and the low beam irradiators 233-234.
  • the front irradiators 231-232 and the low beam irradiators 233-234 are arranged vertically so that the optical axes are directed downward.
  • the front irradiator 231-232 and the low beam irradiator 233-234 are fixed to the holder 70.
  • the holder 70 is designed so that the optical axes of the front irradiators 231-232 and the low beam irradiators 233-234 are directed to the respective angles.
  • the front illuminators 231-232 and the low beam irradiators 233-234 have their optical axes fixed at different angles.
  • the optical axes of the front irradiator 231-232 and the low beam irradiator 233-234 may be finely adjusted by a mechanical mechanism in a factory or the like, as described in Patent Document 4 Shades may be used.
  • FIG. 6 shows a hardware configuration example of the headlamp control device 21 according to the present embodiment.
  • the headlamp control device 21 is a computer.
  • the headlamp control device 21 includes, for example, a microcomputer 31, a nonvolatile memory 36, a communication interface 37, and an output interface 38.
  • the microcomputer 31 includes a ROM (Read Only Memory) 32, a RAM (Random Access Memory) 33, and a processor 34.
  • a program 35 is stored in the ROM 32.
  • the program 35 is a program for realizing a vehicle body angle estimation unit 41, a hysteresis control unit 42, a vehicle body angle discretization unit 43, and a light distribution control unit 44, which will be described later with reference to FIG.
  • the program 35 is loaded from the ROM 32 to the RAM 33 and executed by the processor 34.
  • the communication interface 37 is an interface with the network 28.
  • the output interface 38 is an interface with the headlamp lighting device 22 (left) and the headlamp lighting device 24 (right) that are controlled by the headlamp control device 21.
  • the hardware configuration of the headlamp control device 21 may be any configuration as long as the processor 34 can execute the program 35.
  • FIG. 7 shows a functional configuration example of the headlamp control device 21 according to the present embodiment.
  • the communication unit 40 communicates with the acceleration sensor 27 via the network 28.
  • the communication unit 40 is realized by the communication interface 37.
  • the vehicle body angle estimation unit 41 estimates the vehicle body angle. More specifically, the vehicle body angle estimation unit 41 estimates the vehicle body angle based on the acceleration information from the acceleration sensor 27 received by the communication unit 40.
  • the hysteresis control unit 42 determines the change direction of the vehicle body angle.
  • the vehicle body angle discretization unit 43 discretizes the vehicle body angle and obtains a relative angle. Based on the vehicle body angle estimated by the vehicle body angle estimation unit 41 and the direction of the optical axis of each of the plurality of irradiators, the light distribution control unit 44 limits the irradiation range of the headlamp to a range below the reference plane. Thus, the light distribution of each of the plurality of irradiators is controlled.
  • the light distribution control unit 44 applies a load to the rear part of the vehicle body 11 and the headlamp irradiation range is equal to or less than the reference plane when the headlamp is directed upward from the reference plane of the chassis 12.
  • the light distribution of each of the plurality of irradiators is controlled so as to be limited to this range.
  • the light distribution control unit 44 turns off the irradiator whose irradiation range is above the reference plane and turns on the irradiator whose irradiation range is below the reference plane.
  • the operation performed by the vehicle body angle estimation unit 41 corresponds to a vehicle body angle estimation process.
  • the operation performed by the light distribution control unit 44 corresponds to a light distribution control process.
  • FIG. 7 schematically shows a state in which the processor 34 executes the program 35 to realize the vehicle body angle estimation unit 41, the hysteresis control unit 42, the vehicle body angle discretization unit 43, and the light distribution control unit 44. .
  • the output unit 45 outputs a digital signal (control command) representing the light distribution pattern determined by the light distribution control unit 44 to the headlamp lighting device (left) 22 and the headlamp lighting device (right) 24.
  • the output unit 45 is realized by the output interface 38.
  • the driver of the preceding vehicle or the oncoming vehicle can be controlled even if the vehicle body angle is changed by appropriately controlling the low beam irradiator 233-234 and the front irradiator 231-232 and loading a load on the vehicle body 11.
  • the method of controlling so as not to give glare to is shown.
  • a light distribution pattern realized by the light distribution control method according to the present embodiment will be described with reference to FIGS.
  • FIG. 8 shows a light distribution pattern when a load of the maximum load is applied to the vehicle body 11 and the vehicle body angle becomes the critical angle ⁇ .
  • FIG. 8A shows the light distribution region from the side when the vehicle body angle is the critical angle ⁇ .
  • FIG. 8B shows the light distribution region from the front.
  • the light distribution region 51-53 is a light distribution region by the front irradiator 231-232.
  • the light distribution region 54 is a light distribution region by the low beam irradiator 233-234. Hatching indicates the light distribution area of the illuminator that is lit. That is, hatching indicates the irradiation range of the headlamp.
  • the vehicle body angle is the critical angle ⁇
  • the entire headlamp system 13 faces upward by the critical angle ⁇ .
  • the light distribution control unit 44 controls to turn on only the low beam irradiators 233-234.
  • the low beam irradiators 233 to 234 are arranged to irradiate downward by the critical angle ⁇ + the initial angle ⁇ . For this reason, even when the vehicle body angle becomes the critical angle ⁇ , the low beam irradiators 233 to 234 irradiate a range below the surface below the initial angle ⁇ from the reference surface. Therefore, even when the vehicle body angle is the critical angle ⁇ , the oncoming vehicle or the preceding vehicle is not dazzled by the headlamp.
  • FIG. 9 shows a light distribution pattern when the vehicle body angle is close to 0, such as in a non-loading state.
  • FIG. 9A shows the light distribution region from the side.
  • FIG. 9B shows the light distribution region from the front.
  • the notation of the light distribution areas 51-54 is the same as in FIG.
  • hatching shows the irradiation range of a headlamp similarly to FIG. When only the low beam irradiators 233 to 234 are turned on, only the range below the surface below the reference plane by ⁇ + ⁇ is irradiated.
  • the light distribution control unit 44 turns on a part or all of the front irradiators 231-232 that irradiate the area above the low beam irradiators 233-234.
  • the irradiation range is expanded so that the optical axis of the headlamp approaches the initial angle ⁇ .
  • FIG. 9 shows three light distribution regions by the front irradiators 231-232 and one light distribution region by the low beam irradiators 233-234, but the number is not limited to this. It may be increased for higher accuracy.
  • a headlamp (left) 23 composed of one low beam irradiator and three front irradiators is applied.
  • the optical axis direction of the low beam irradiator is 2.5 degrees
  • the optical axis directions of the front irradiator are 1.7 degrees, 0.9 degrees, and 0.1 degrees, respectively.
  • the vehicle body angle is positive when the vehicle body 11 is tilted forward.
  • Each of the three front irradiators is referred to as front irradiators A, B, and C.
  • step S101 the communication unit 40 of the headlamp control device 21 receives acceleration information in the pitch direction of the vehicle from the acceleration sensor 27 through the network 28.
  • step S102 the vehicle body angle estimation unit 41 of the headlight control device 21 estimates the vehicle body angle using the acceleration information in the pitch direction.
  • the vehicle body angle estimation unit 41 estimates the vehicle body angle using, for example, the method disclosed in Patent Document 1 or Patent Document 3. As described above, the vehicle body angle estimation unit 41 estimates the vehicle body angle with the direction in which the vehicle body tilts forward as positive.
  • step S103 the vehicle body angle discretization unit 43 of the headlamp control device 21 discretizes the vehicle body angle estimated by the vehicle body angle estimation unit 41 to the level of the optical axis that can be realized by the front irradiator 231-232.
  • a discretization table 61 as shown in FIG. 11 can be used.
  • the vehicle body angle discretization table 61 in FIG. 11 describes a list of optical axis angles that can be realized by the headlamp system 13.
  • an angle formed by the optical axis of each of the front irradiators 231-232 and the optical axis of the low beam irradiators 233-234 is described.
  • the vehicle body angle discretization unit 43 discretizes the relative angle ⁇ - ⁇ between the critical angle ⁇ and the vehicle body angle ⁇ estimated from the acceleration sensor information. In the case of the vehicle body angle discretization table 61 in FIG. 11, if the vehicle body angle is 2.8 degrees and the critical angle is 3.7 degrees, the relative angle ⁇ - ⁇ is 0.9 degrees. The relative angle is 0.8 degrees.
  • the hysteresis control vehicle body angle discretization table 62 of FIG. 12 may be used instead of the discretization table of FIG.
  • the hysteresis control vehicle body angle discretization table is used to implement hysteresis control.
  • the hysteresis control unit 42 determines a change with time in the vehicle body angle. That is, the hysteresis control unit 42 determines whether the vehicle body angle is increasing or decreasing. Then, the hysteresis control unit 42 outputs the determination result to the vehicle body angle discretization unit 43.
  • the vehicle body angle discretization unit 43 switches the threshold value for obtaining the discretized relative angle depending on whether the vehicle body angle is increasing or decreasing.
  • the increase in the vehicle body angle occurs, for example, for reasons such as an increase in the number of occupants on the vehicle and an increase in the fuel loading amount due to refueling. Further, the decrease in the vehicle body angle occurs due to reasons such as a decrease in the number of occupants boarding the vehicle and a decrease in the fuel load due to fuel consumption. For example, if the body angle is 2.8 degrees and the critical angle is 3.7 degrees, the relative angle ⁇ - ⁇ is 0.9 degrees, and if the body angle is decreasing, the corresponding discretized The relative angle is 1.6 degrees.
  • step S104 the light distribution control unit 44 determines a light distribution pattern based on the discretized relative angle obtained in step S103.
  • the light distribution control unit 44 can determine the light distribution pattern using, for example, the light distribution table 63 shown in FIG. In the light distribution table of FIG. 13, the discretized relative angle and lighting on / off for each irradiator are described. In other words, the light distribution table in FIG. 13 shows the relationship between the vehicle body angle and the presence or absence of lighting for each irradiator for limiting the irradiation range of the headlamp to a range below the reference plane. In the light distribution table of FIG.
  • the light distribution control unit 44 sets all of the low beam irradiator, the front irradiator A, the front irradiator B, and the front irradiator C to 100%.
  • the light is distributed with the light distribution intensity.
  • the light distribution table may be designed so as not to dazzle oncoming vehicles by utilizing light distribution simulation, but as an example here the irradiation range of all irradiators should not be less than the initial angle ⁇ . A method for generating a light distribution table to be performed will be described. FIG. 16 shows a flowchart for generating such a light distribution table.
  • step S201 When the difference between the optical axis direction of each front irradiator and the discretized relative angle is equal to or larger than the initial angle ⁇ (YES in step S201), ON is entered in the light distribution table (step S202). On the other hand, when the difference between the optical axis direction of each front irradiator and the discretized relative angle is less than the initial angle ⁇ (NO in step S201), OFF is entered in the light distribution table (step S203). Note that ON is always entered in the light distribution table for the low beam irradiator. The sign of the initial angle ⁇ is positive in the direction in which the vehicle tilts forward.
  • the light distribution control unit 44 reduces or extinguishes the illuminator arranged so that the optical axis exceeds a specified angle with respect to the road surface.
  • the illuminator arranged so that the axis does not exceed a specified angle with respect to the road surface is turned on.
  • a light distribution intensity table 64 as shown in FIG. 14 to which designation of the light distribution intensity is added may be used.
  • the light distribution intensity table 64 describes the discrete relative angles and the light distribution intensity for each irradiator. That is, the light distribution intensity table in FIG. 14 shows the relationship between the vehicle body angle and the light distribution intensity for each irradiator for limiting the irradiation range of the headlamp to a range below the reference plane.
  • the light distribution control unit 44 causes the low beam irradiator to emit light with a light emission intensity of 100%, and the front irradiator A is turned on.
  • the irradiation range of the headlamp can be controlled more finely by adjusting the emission intensity for each irradiator.
  • the light distribution control unit 44 switches the control method of the light distribution intensity of each of the plurality of irradiators according to the temporal change of the vehicle body angle. Can do.
  • step S105 the output unit 45 sends a control command for notifying the light distribution pattern of each irradiator determined in step S104 to the headlamp lighting device (left) 22 and the headlamp lighting device (right) 24. Output.
  • the output unit 45 outputs a simple digital waveform control command.
  • the output unit 45 outputs a digital waveform control command using, for example, PWM (pulse width modulation), and each irradiator Change the light distribution intensity.
  • a plurality of irradiators each having a fixed optical axis are used. Further, in the present embodiment, the light distribution of each of the plurality of irradiators is controlled so that the irradiation range of the headlamp is limited to a range below the reference plane. For this reason, according to the present embodiment, the irradiation range of the headlamp is controlled according to the inclination of the vehicle without providing a mechanical element for changing the direction of the optical axis of the illuminator of the headlamp. be able to. As a result, according to the present embodiment, dazzling to the driver of the oncoming vehicle or the preceding vehicle can be prevented.
  • the optical axis of the low beam irradiator is arranged downward so as to illuminate the lower side by the critical angle ⁇ + the initial angle ⁇ , so it is necessary to increase the number of irradiators below the critical angle ⁇ + the initial angle ⁇ . There is no need for control. For this reason, light emitting means such as LEDs can be reduced and electronic control can be simplified as compared with the case where the existing technology is adopted. In addition, the auto leveling control can be performed in a lower cost manner.
  • the headlamp control device 21 is applied to a vehicle having a luggage compartment at the rear of the vehicle body 11 .
  • the headlamp control device 21 according to the present embodiment can also be applied to a vehicle having a luggage compartment in the front part of the vehicle body 11.
  • the front portion of the vehicle body 11 sinks, and the headlamp faces downward from the reference plane.
  • the light distribution control unit 44 of the headlamp control device 21 has a plurality of irradiations such that the irradiation range of the headlamp is limited to a range below the reference plane, and the illuminance of the irradiation range of the headlamp is equal to or higher than a specified value.
  • the light distribution control unit 44 determines a light distribution pattern that compensates for the shortage, and irradiates the headlamp. Control so that the illuminance of the range exceeds the specified value.
  • the processor 34 shown in FIG. 6 is an IC (Integrated Circuit) that performs processing.
  • the processor 34 is a CPU (Central Processing Unit), a DSP (Digital Signal Processor), or the like.
  • the communication interface 37 shown in FIG. 6 includes a receiver that receives data and a transmitter that transmits data.
  • the communication interface 37 is, for example, a communication chip or a NIC (Network Interface Card).
  • the ROM 32 or the nonvolatile memory 36 stores an OS (Operating System). At least a part of the OS is executed by the processor 34.
  • the processor 34 executes the program 35 while executing at least a part of the OS. When the processor 34 executes the OS, task management, memory management, file management, communication control, and the like are performed.
  • the headlamp control device 21 may include a plurality of processors that replace the processor 34. The plurality of processors share the execution of the program 35. Each processor is an IC that performs processing in the same manner as the processor 34.
  • At least one of information, data, signal values, and variable values indicating the processing results of the vehicle body angle estimation unit 41, the hysteresis control unit 42, the vehicle body angle discretization unit 43, and the light distribution control unit 44 is stored in the RAM 33 and the processor 34. Stored in at least one of the internal register and the cache memory.
  • the program 35 may be stored in a portable storage medium such as a magnetic disk, a flexible disk, an optical disk, a compact disk, a Blu-ray (registered trademark) disk, or a DVD.
  • the “part” of the vehicle body angle estimation unit 41, the hysteresis control unit 42, the vehicle body angle discretization unit 43, and the light distribution control unit 44 may be read as “circuit” or “process” or “procedure” or “processing”. Good.
  • the headlight control device 21 may be realized by an electronic circuit such as a logic IC (Integrated Circuit), a GA (Gate Array), an ASIC (Application Specific Integrated Circuit), or an FPGA (Field-Programmable Gate Array).
  • the vehicle body angle estimation unit 41, the hysteresis control unit 42, the vehicle body angle discretization unit 43, and the light distribution control unit 44 are each realized as part of an electronic circuit.
  • the processor and the electronic circuit are also collectively referred to as a processing circuit.

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

Abstract

La présente invention concerne un dispositif de commande de phare (21) disposé dans un véhicule équipé d'un châssis et d'un corps. Le corps est pourvu de phares dans lesquels une pluralité de dispositifs de formation de faisceau sont agencés, les axes optiques respectifs des dispositifs de formation de faisceau étant fixés à des angles mutuellement différents, et la pluralité de dispositifs de formation de faisceau comprennent un dispositif de formation de faisceau dans lequel, lorsque le corps est soumis à une charge correspondant à la capacité de charge maximale, la plage de formation de faisceau est inférieure à une surface de référence, qui est une surface horizontale imaginaire qui est parallèle au châssis et qui passe à travers les phares. Une unité d'estimation d'angle de corps (41) estime l'angle de corps, qui est l'angle entre le châssis et le corps. Un dispositif de commande de diffusion de lumière (44) commande, sur la base de l'angle de corps et de la direction des axes optiques respectifs de chacun des dispositifs de formation de faisceau, la diffusion de lumière de chacun de la pluralité de dispositifs de formation de faisceau de telle sorte que la plage de faisceaux des phares est limitée à une plage s'étendant vers le bas à partir de la surface de référence.
PCT/JP2017/004095 2017-02-03 2017-02-03 Dispositif de commande de phare, procédé de commande de phare et programme de commande de phare WO2018142593A1 (fr)

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PCT/JP2017/004095 WO2018142593A1 (fr) 2017-02-03 2017-02-03 Dispositif de commande de phare, procédé de commande de phare et programme de commande de phare

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5635441U (fr) * 1979-08-28 1981-04-06
JP2004095480A (ja) * 2002-09-03 2004-03-25 Koito Mfg Co Ltd 車両用前照灯
JP2004168130A (ja) * 2002-11-19 2004-06-17 Koito Mfg Co Ltd 車両用前照灯の照射方向制御装置
JP2010241328A (ja) * 2009-04-08 2010-10-28 Koito Mfg Co Ltd 車高センサ、車両用灯具の照射方向調整装置、および車両用灯具の照射方向調整方法
JP2010247551A (ja) * 2009-04-10 2010-11-04 Panasonic Corp 照射方向制御装置
JP2011521435A (ja) * 2008-05-28 2011-07-21 オスラム ゲゼルシャフト ミット ベシュレンクテル ハフツング 少なくとも２つの半導体発光部材を備える車両照明装置

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5635441U (fr) * 1979-08-28 1981-04-06
JP2004095480A (ja) * 2002-09-03 2004-03-25 Koito Mfg Co Ltd 車両用前照灯
JP2004168130A (ja) * 2002-11-19 2004-06-17 Koito Mfg Co Ltd 車両用前照灯の照射方向制御装置
JP2011521435A (ja) * 2008-05-28 2011-07-21 オスラム ゲゼルシャフト ミット ベシュレンクテル ハフツング 少なくとも２つの半導体発光部材を備える車両照明装置
JP2010241328A (ja) * 2009-04-08 2010-10-28 Koito Mfg Co Ltd 車高センサ、車両用灯具の照射方向調整装置、および車両用灯具の照射方向調整方法
JP2010247551A (ja) * 2009-04-10 2010-11-04 Panasonic Corp 照射方向制御装置

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