JP2018052365A - Control system, on-vehicle control device and computer program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a control system, an on-vehicle control device and a computer program.SOLUTION: A control system includes an on-vehicle control device for controlling operation of equipment mounted on a vehicle based on information from a road-side communication device which is acquired through an on-vehicle communication device, in which the on-vehicle control device comprises: a determination part which determines whether or not there is a possibility such that a movable body detected by a detection device appears at a travel destination of the vehicle on the basis of information from the road-side communication device; and a control part which executes control for changing an irradiation direction of a head lamp which is included in the vehicle to a downward direction or control for decreasing an amount of light of the head lamp in the case it is determined that there is a possibility such that the movable body appears at the travel destination of the vehicle.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a control system, an in-vehicle control device, and a computer program.

  Generally, in a vehicle headlamp device, a driver manually switches a headlamp (also referred to as a headlight) to a low beam or a high beam. In the case of a high beam, it is excellent in visibility for the driver, but since it gives glare to the driver and pedestrian in the oncoming vehicle, it is necessary to appropriately switch between the high beam and the low beam.

  In order to prevent or reduce glare from an oncoming vehicle, Patent Document 1 discloses a technique for reducing the amount of headlamp light when another vehicle traveling in front of the host vehicle is detected. ing.

JP 2000-198385 A

  However, in Patent Document 1, since the light quantity of the headlamp is reduced when another vehicle traveling in front of the host vehicle is detected, the side wall is obstructed when traveling on a side road that merges with the main line, for example. Therefore, in a situation where the other vehicle cannot be detected, it is impossible to execute the control for reducing the light amount of the headlamp in advance, and there is a possibility that the other vehicle may be irradiated with the light of the headlamp. have.

  The present invention has been made in view of such circumstances, and when there is a possibility that another vehicle may appear at the destination of the host vehicle, the irradiation direction of the headlamp is changed downward, It is an object of the present invention to provide a control system, an in-vehicle control device, and a computer program that can reduce the amount of light.

  A control system according to an aspect of the present invention includes a detection device that detects a moving body that moves on a road, a roadside communication device that transmits information on the moving body obtained by the detection device, and a communication with the roadside communication device. A vehicle-mounted communication device, and a vehicle-mounted control device that controls the operation of the equipment mounted on the vehicle based on information from the roadside communication device acquired through the vehicle-mounted communication device, The in-vehicle control device is configured to determine whether or not the mobile body detected by the detection device may appear in the travel destination of the vehicle based on information from the roadside communication device; and the mobile body Control for changing the irradiation direction of the headlamp included in the vehicle downward or the control for reducing the light quantity of the headlamp when it is determined that the vehicle may appear at the destination of the vehicle. Provided with a door.

  The vehicle-mounted control apparatus which concerns on 1 aspect of this invention acquires the information of the mobile body detected by the detection apparatus through communication between the roadside communication apparatus connected to the said detection apparatus, and the vehicle-mounted communication apparatus mounted in the vehicle The vehicle-mounted control device that controls the operation of the equipment mounted on the vehicle based on the acquired information, wherein the moving body detected by the detection device based on the information from the roadside communication device is the vehicle. A determination unit that determines whether or not there is a possibility of appearing in the travel destination of the vehicle, and irradiation of a headlamp included in the vehicle when it is determined that the moving body may appear in the travel destination of the vehicle And a control unit that executes control to change the direction downward or control to reduce the light amount of the headlamp.

  A computer program according to one aspect of the present invention provides information about a moving object detected by a detection device to a computer mounted on a vehicle, roadside communication device connected to the detection device, and in-vehicle communication mounted on the vehicle. It is acquired through communication with a device, and based on the acquired information, it is determined whether or not the moving body detected by the detection device may appear in a travel destination of the vehicle, and the moving body is When it is determined that there is a possibility of appearing at the destination of the vehicle, a process of executing a control for changing the irradiation direction of the headlamp included in the vehicle downward or a control for reducing the light amount of the headlamp is executed. It is a computer program for making it.

  According to the present application, when there is a possibility that another vehicle appears in the travel destination of the host vehicle, the irradiation direction of the headlamp can be changed downward, or the light amount of the headlamp can be reduced.

FIG. 2 is an explanatory diagram illustrating a schematic configuration of a headlight control system according to Embodiment 1. It is a block diagram explaining the structure by the side of a vehicle. FIG. 6 is an explanatory diagram for explaining the operation of the headlight control system according to the first embodiment. It is a flowchart explaining the procedure of the process which the vehicle lamp ECU which concerns on Embodiment 1 performs. It is a flowchart explaining the procedure of the process which the vehicle lamp ECU which concerns on Embodiment 2 performs.

  Embodiments of the present invention will be listed and described. Moreover, you may combine arbitrarily at least one part of embodiment described below.

  A control system according to an aspect of the present application is capable of communicating with a detection device that detects a moving body that moves on a road, a roadside communication device that transmits information on the moving body obtained by the detection device, and the roadside communication device. A control system comprising: a certain in-vehicle communication device; and an in-vehicle control device that controls the operation of equipment mounted on the vehicle based on information from the roadside communication device acquired through the in-vehicle communication device. A control unit configured to determine, based on information from the roadside communication device, whether or not the moving body detected by the detection device may appear in a travel destination of the vehicle; When it is determined that there is a possibility of appearing at the travel destination of the vehicle, a control unit that executes control to change the irradiation direction of the headlamp included in the vehicle downward, or control to reduce the light amount of the headlamp Equipped with a.

  In the above aspect, when it is determined that there is a possibility that a moving body appears in the travel destination of the host vehicle based on information transmitted from the roadside communication device, the headlamp of the host vehicle is changed downward. Since the control or the control for reducing the light amount is executed, the possibility of directly irradiating the moving body with the light emitted from the headlamp is reduced. When the moving body is, for example, another vehicle that travels on the road, it is possible to reduce glare on the passengers who are riding on the other vehicle, and the other vehicle can travel comfortably and safely.

  The vehicle-mounted control apparatus which concerns on 1 aspect of this application acquires the information of the mobile body detected by the detection apparatus through communication between the roadside communication apparatus connected to the said detection apparatus, and the vehicle-mounted communication apparatus mounted in the vehicle. A vehicle-mounted control device that controls the operation of the equipment mounted on the vehicle based on the acquired information, wherein the moving body detected by the detection device is based on the information from the roadside communication device. A determination unit that determines whether or not there is a possibility of appearing at a travel destination, and an irradiation direction of a headlamp included in the vehicle when it is determined that the moving body may appear at a travel destination of the vehicle And a control unit that executes control to change the light amount of the headlamp downward.

  In the above aspect, when it is determined that there is a possibility that a moving body appears in the travel destination of the host vehicle based on information transmitted from the roadside communication device, the headlamp of the host vehicle is changed downward. Since the control or the control for reducing the light amount is executed, the possibility of directly irradiating the moving body with the light emitted from the headlamp is reduced. When the moving body is, for example, another vehicle that travels on the road, it is possible to reduce glare on the passengers who are riding on the other vehicle, and the other vehicle can travel comfortably and safely.

  In the in-vehicle control device according to one aspect of the present application, the information on the moving body obtained by the detection device includes information on the position and moving speed of the moving body, and the determination unit includes the position and traveling speed of the vehicle. Through an acquisition unit that acquires information on the vehicle, a first calculation unit that calculates an arrival time until the vehicle reaches a specific point of a travel destination, based on the information acquired by the acquisition unit, and the in-vehicle communication device A second calculation unit that calculates an arrival time until the mobile body reaches the specific point based on information acquired from the roadside communication device, and the arrival of the vehicle calculated by the first calculation unit When the arrival time of the moving object calculated by the second calculation unit is shorter than the time, it is determined that the moving object may appear in the travel destination of the vehicle.

  In the above aspect, the time until the host vehicle reaches the specific point of the destination is compared with the time until the moving body such as another vehicle reaches the specific point, and the latter is reached. If the time is shorter than the arrival time of the former, it can be determined that there is a possibility that the moving body appears in the travel destination of the host vehicle.

  In the vehicle-mounted control device according to one aspect of the present application, the determination unit determines whether or not a difference in distance between the moving body and the vehicle is equal to or greater than a threshold when the vehicle reaches the specific point. An inter-vehicle distance determination unit is provided, and the control unit prohibits the control of the headlamp by the control unit when determining that the difference in distance between the moving body and the vehicle is equal to or greater than the threshold value. Providing forbidden parts.

  In the above aspect, when the distance between the host vehicle and a moving body such as another vehicle is equal to or greater than the threshold value when the host vehicle reaches a specific point of the travel destination, the headlamp is turned downward. Since control to change and control to reduce the amount of light are prohibited, if the two are separated so that the light from the headlamp does not reach when reaching a specific point, control of the headlamp is omitted. be able to.

  The vehicle-mounted control apparatus which concerns on 1 aspect of this application is the vehicle-mounted communication mounted in the road-side communication apparatus connected to the said detection apparatus, and the vehicle-mounted communication detected by the detection apparatus in the computer mounted in the vehicle. It is acquired through communication with a device, and based on the acquired information, it is determined whether or not the moving body detected by the detection device may appear in a travel destination of the vehicle, and the moving body is When it is determined that there is a possibility of appearing at the destination of the vehicle, a process of executing a control for changing the irradiation direction of the headlamp included in the vehicle downward or a control for reducing the light amount of the headlamp is executed. It is a computer program for making it.

  In the above aspect, when it is determined that there is a possibility that a moving body appears in the travel destination of the host vehicle based on information transmitted from the roadside communication device, the headlamp of the host vehicle is changed downward. Since the control or the control for reducing the light amount is executed, the possibility of directly irradiating the moving body with the light emitted from the headlamp is reduced. When the moving body is, for example, another vehicle that travels on the road, it is possible to reduce glare on the passengers who are riding on the other vehicle, and the other vehicle can travel comfortably and safely.

Hereinafter, the present invention will be specifically described with reference to the drawings showing embodiments thereof.
(Embodiment 1)
FIG. 1 is an explanatory diagram illustrating a schematic configuration of the headlight control system according to the first embodiment. The headlight control system according to the present embodiment has a detection device 11 that detects a vehicle C that is installed in the vicinity of a road and travels in a predetermined area on the road as a configuration on the infrastructure side, and is detected by the detection device 11. And a roadside communication device 12 that transmits information on the vehicle C to the outside. Further, as a configuration on the vehicle side, a vehicle lamp ECU (Electronic Control Unit) 20 that controls the operation of a headlight (headlight) 203 mounted on the vehicle C, and an in-vehicle communication device 30 that can communicate with the roadside communication device 12. Etc. (see FIG. 2).

  The detection device 11 includes an imaging device, a distance measurement sensor, and the like installed at appropriate locations in the vicinity of the road, detects the vehicle C traveling in a predetermined area on the road, and transmits information on the detected vehicle C to the roadside communication device 12. Output. The information on the vehicle C output from the detection device 11 to the roadside communication device 12 includes information indicating that the vehicle C has been detected, and information lamps related to the detected position and travel speed of the vehicle C. In the present embodiment, the detection target by the detection device 11 is mainly the vehicle C, but an arbitrary moving body such as a pedestrian or a person who moves on a bicycle may be included.

  The detection device 11, for example, captures a predetermined area on the road, and calculates the difference between the obtained captured image and a background image captured in advance, so that the presence of the traveling vehicle C and the position of the vehicle C Detect travel speed. Furthermore, the structure which detects the position etc. of the vehicle C by combining an imaging device and a ranging sensor may be sufficient. Moreover, the detection apparatus 11 may be provided with a pressure sensor embedded at an appropriate location on the road. When a pressure within a predetermined range is detected by the pressure sensor, the detection device 11 can output information on the vehicle C to the roadside communication device 12 assuming that the vehicle C is traveling in a location where the pressure sensor is embedded. it can.

  The roadside communication device 12 is a wireless communication device that performs wireless communication with the in-vehicle communication device 30 mounted on the vehicle C, and is installed at an appropriate location in the vicinity of the road like the detection device 11. The roadside communication device 12 performs wireless communication according to a predetermined communication protocol based on, for example, IEEE 802.11p. The frequency band used in the wireless communication between the roadside communication device 12 and the in-vehicle communication device 30 is not particularly limited, but for example, frequencies of 5.9 GHz band and 700 MHz band can be used.

  The above-described detection device 11 is connected to the roadside communication device 12 by wire or wirelessly. The roadside communication device 12 acquires information on the vehicle C detected by the detection device 11, and transmits the acquired information on the vehicle C to the outside. Note that the information transmitted by the roadside communication device 12 includes information related to the position and traveling speed of the vehicle C detected by the detection device 11. The information transmitted from the roadside communication device 12 is received by the in-vehicle communication device 30 mounted on the vehicle C when the vehicle C passes through an area (road vehicle information area) that can communicate with the roadside communication device 12.

  In the headlight control system according to the present embodiment, when the detection device 11 detects a vehicle C (another vehicle C2) that travels on the road, the roadside communication device 12 connected to the detection device 11 has information on the other vehicle C2. Is sent to the outside. When the vehicle C (own vehicle C1) enters the roadside vehicle information area by the roadside communication device 12, the in-vehicle communication device 30 mounted on the own vehicle C1 receives the information transmitted from the roadside communication device 12. The vehicle light ECU 20 of the host vehicle C1 determines whether or not the other vehicle C2 may appear at the travel destination of the host vehicle C1 based on the information acquired from the in-vehicle communication device 30, and the other vehicle C2 appears. When it is determined that there is a possibility, control for changing the irradiation direction of the headlight 203 of the host vehicle C1 downward or control for reducing the light amount of the headlight 203 is performed.

  FIG. 2 is a block diagram illustrating the configuration on the vehicle side. In the first embodiment, the vehicle-side configuration includes a vehicle lamp ECU 20 that controls the operation of the headlight 203 included in the vehicle C, and an in-vehicle communication device 30 that can communicate with the road-side communication device 12.

  The in-vehicle communication device 30 is a wireless communication device that is mounted on the vehicle C and performs wireless communication with the roadside communication device 12. Similar to the roadside communication device 12, the in-vehicle communication device 30 performs wireless communication according to a predetermined communication protocol based on, for example, IEEE 802.11p. The in-vehicle communication device 30 is connected to the vehicle lamp ECU 20 via the in-vehicle communication line. When the information transmitted from the roadside communication device 12 is received, the in-vehicle communication device 30 transmits the received information to the vehicle lamp ECU 20.

  The vehicle lamp ECU 20 includes, for example, a control unit 21, a storage unit 22, a communication unit 23, an input unit 24, and an output unit 25, and controls the operation of the vehicle lamp including the headlight 203.

  The control unit 21 includes a CPU (Central Processing Unit), a ROM (Read Only Memory), a RAM (Random Access Memory), and the like. In the present embodiment, the CPU of the control unit 21 executes the control program stored in the ROM, so that the other vehicle is the destination of the vehicle C (the host vehicle C1) based on the information acquired from the in-vehicle communication device 30. The function of controlling the operation of the headlight 203 is realized when it is determined that the possibility of C2 appearing and the possibility of C2 appearing. The RAM in the control unit 21 temporarily stores data generated during the execution of the control program. Note that the control unit 21 may have functions such as a timer that measures an elapsed time from when a measurement start instruction is given to when a measurement end instruction is given, and a counter that counts the number.

  The storage unit 22 is configured by a nonvolatile memory such as an EEPROM (Electronically Erasable Programmable Read Only Memory), and stores identification information for identifying the vehicle light ECU 20. Moreover, a part of control program which the control part 21 performs may be memorize | stored in the memory | storage part.

  The communication unit 23 includes an interface for communicating with the in-vehicle communication device 30 and other ECUs (not shown) via an in-vehicle communication line such as a CAN (Controller Area Network). The communication unit 23 transmits / receives various information to / from the in-vehicle communication device 30 via the in-vehicle communication line.

  The input unit 24 includes an interface for inputting information from various devices included in the vehicle C. In the present embodiment, vehicle speed information from a vehicle speed sensor (not shown) that detects the traveling speed of the vehicle C, and vehicle position information from a GPS receiver that detects the position of the vehicle C using GPS (Global Positioning System). Are input to the input unit 24.

  The output unit 25 includes an interface for connecting a drive unit for a vehicle lamp. In the present embodiment, driving units (LO driving unit 201 and HI driving unit 202) for driving the headlight 203 are connected. The headlight 203 includes a low-beam headlight 203a and a high-beam headlight 203b, and the LO drive unit 201 and the HI drive unit 202 are turned on or off independently (or in conjunction), respectively. The irradiation direction of the light 203 is switched to a low beam or a high beam.

Hereinafter, the operation of the headlight control system according to the first embodiment will be described.
FIG. 3 is an explanatory diagram for explaining the operation of the headlight control system according to the first embodiment. FIG. 3A shows a state where the host vehicle C1 and the other vehicle C2 are traveling on the main road on the side road and the elevated side with the high beam headlight 203 turned on. The host vehicle C1 is scheduled to join the main line on which the other vehicle C2 is traveling at the destination. 3A and 3B, illustration of the detection device 11 and the roadside communication device 12 is omitted for simplification.

  When there is a side wall between the side road and the main line, or when there is a height difference between the two, the presence of the other vehicle C2 traveling on the main line directly from the own vehicle C1 traveling on the side road is directly Can not be confirmed. For this reason, the headlight 203 may not be switched from the high beam to the low beam by the driver of the host vehicle C1, and there is a possibility that the other vehicle C2 that precedes when merging is irradiated with the high beam. As a result, there is a possibility of giving glare and discomfort to the passenger of the other vehicle C2.

  In the present embodiment, when it is determined from the information from the detection device 11 transmitted from the roadside communication device 12 that there is a possibility that the other vehicle C2 appears in the travel destination of the own vehicle C1, the headlight of the own vehicle C1. Control to change the irradiation direction of 203 downward (low beam) or control to reduce the light quantity of the headlight 203 is performed. FIG. 3B shows a state in which the headlight 203 of the host vehicle C1 is switched to the low beam when joining.

  FIG. 4 is a flowchart for explaining a procedure of processing executed by the vehicle lamp ECU 20 according to the first embodiment. For example, when the high beam headlight 203b is on (low beam headlight 203a is off) by automatic high beam control, the control unit 21 of the vehicle lamp ECU 20 executes the following processing.

  The control unit 21 determines whether or not information on the other vehicle C2 has been acquired (step S101). When the other vehicle C2 traveling on the road is detected by the detection device 11, the roadside communication device 12 connected to the detection device 11 obtains information on the other vehicle C2 (information on the vehicle position and traveling speed of the other vehicle C2). Send to outside. When the vehicle C (own vehicle C1) enters the road and vehicle information area with the roadside communication device 12, the in-vehicle communication device 30 receives information transmitted from the roadside communication device 12. The control unit 21 of the vehicle lamp ECU 20 acquires information received by the in-vehicle communication device 30 through the in-vehicle communication line. When determining that the information of the other vehicle C2 has not been acquired (S101: NO), the control unit 21 ends the process according to this flowchart.

  When it is determined that the information of the other vehicle C2 has been acquired (S101: YES), the control unit 21 determines whether or not the other vehicle C2 may appear in the travel destination of the host vehicle C1 (step S102). . At this time, the control unit 21 calculates the time until the vehicle reaches the specific point (hereinafter referred to as a reference point) in the travel destination of the host vehicle C1 for each of the host vehicle C1 and the other vehicle C2. It is possible to determine whether or not there is a possibility that another vehicle C2 appears in the travel destination.

  For example, when the vehicle speed of the host vehicle C1 input through the input unit 24 is 50 km / h and the distance from the current location calculated based on the vehicle position to the reference point is 150 m, the control unit 21 It can be calculated that it takes about 11 seconds for the vehicle C1 to reach the reference point from the current location. On the other hand, the vehicle speed of the other vehicle C2 is 60 km / h based on the information of the other vehicle C2 acquired through the in-vehicle communication device 30, and the distance from the current location of the other vehicle C2 to the reference point is based on the vehicle position of the other vehicle C2. When it is assumed that the distance is 100 m, the control unit 21 can calculate that it takes about 6 seconds for the other vehicle C2 to reach the reference point from the current location. At this time, since the other vehicle C2 reaches the reference point earlier than the own vehicle C1, the control unit 21 determines that there is a possibility that the other vehicle C2 appears in the travel destination of the own vehicle C1.

  When it is determined that there is no possibility that another vehicle C2 appears in the preceding destination of the host vehicle C1 (S102: NO), the control unit 21 ends the process according to this flowchart.

  When it is determined that there is a possibility that another vehicle C2 appears in the travel destination of the host vehicle C1 (S102: YES), the control unit 21 controls the headlight 203 (step S103). At this time, the control unit 21 outputs a control signal for switching the low beam headlight 203a from off to on to the LO driving unit 201 and also a control signal for switching the high beam headlight 203b from on to off to the HI driving unit 202. By outputting, control to switch the headlight 203 from the high beam to the low beam is executed.

  As described above, in the first embodiment, when there is a possibility that the other vehicle C2 appears in the travel destination of the host vehicle C1, the headlight 203 of the host vehicle C1 is switched from the high beam to the low beam. The other vehicle C2 can travel comfortably and safely without giving glare to the vehicle.

(Embodiment 2)
In the second embodiment, a configuration is described in which switching from a high beam to a low beam is prohibited when the distance between the host vehicle C1 and the other vehicle C2 is sufficiently separated when the host vehicle C1 reaches the reference point. To do.
The overall configuration of the headlight control system and the configuration on the vehicle side are the same as those in the first embodiment, and thus the description thereof will be omitted.

  FIG. 5 is a flowchart for explaining a procedure of processing executed by the vehicle lamp ECU 20 according to the second embodiment. For example, when the high beam headlight 203b is on (low beam headlight 203a is off) by automatic high beam control, the control unit 21 of the vehicle lamp ECU 20 executes the following processing.

  The control unit 21 determines whether or not information on the other vehicle C2 has been acquired (step S201). As described in the first embodiment, when the other vehicle C2 traveling on the road is detected by the detection device 11, the roadside communication device 12 connected to the detection device 11 receives information on the other vehicle C2 (the other vehicle C2's information). Information relating to vehicle position and traveling speed) is transmitted to the outside. When the vehicle C (own vehicle C1) enters the road and vehicle information area with the roadside communication device 12, the in-vehicle communication device 30 receives information transmitted from the roadside communication device 12. The control unit 21 of the vehicle lamp ECU 20 acquires information received by the in-vehicle communication device 30 through the in-vehicle communication line. When determining that the information of the other vehicle C2 has not been acquired (S201: NO), the control unit 21 ends the process according to the flowchart.

  When it is determined that the information of the other vehicle C2 has been acquired (S201: YES), the control unit 21 determines whether or not the other vehicle C2 may appear at the travel destination of the host vehicle C1 (step S202). . At this time, the control unit 21 calculates the time required to reach a specific point (reference point) in the travel destination of the host vehicle C1 for each of the host vehicle C1 and the other vehicle C2, whereby the travel destination of the host vehicle C1. It is possible to determine whether there is a possibility that another vehicle C2 appears. When it is determined that there is no possibility of another vehicle C2 appearing ahead of the host vehicle C1 (S202: NO), the control unit 21 ends the process according to this flowchart.

  When it is determined that there is a possibility that another vehicle C2 appears in the travel destination of the own vehicle C1 (S202: YES), the control unit 21 and the other vehicle C1 at the time when the own vehicle C1 reaches the reference point. It is determined whether the inter-vehicle distance with C2 is equal to or greater than a threshold value (step S203). At this time, the control unit 21 calculates a time difference (referred to as ΔT) between the time until the host vehicle C1 reaches the reference point and the time until the other vehicle C2 reaches the reference point. By calculating the product of the vehicle speed and the time difference ΔT, the distance between the host vehicle C1 and the other vehicle C2 can be calculated. As for the threshold value, a distance (for example, 150 m) longer than the high beam irradiation distance (100 m or more) can be set in advance as a threshold value.

  When it is determined that the inter-vehicle distance between the host vehicle C1 and the other vehicle C2 at the time when the host vehicle C1 reaches the reference point (S203: YES), that is, when the host vehicle C1 reaches the reference point. Thus, when it can be determined that the other vehicle C2 is moving ahead of the irradiation range of the headlight 203, the control unit 21 ends the processing according to this flowchart. In this case, switching from the high beam to the low beam is prohibited, and the headlight 203 is maintained at the high beam.

  On the other hand, when it is determined that the inter-vehicle distance between the host vehicle C1 and the other vehicle C2 is less than the threshold when the host vehicle C1 reaches the reference point (S203: NO), that is, the host vehicle C1 reaches the reference point. At this point, if it can be determined that the other vehicle C2 exists within the irradiation range of the headlight 203, the control unit 21 controls the headlight 203 (step S204). At this time, the control unit 21 outputs a control signal for switching the low beam headlight 203a from off to on to the LO driving unit 201 and also a control signal for switching the high beam headlight 203b from on to off to the HI driving unit 202. By outputting, control to switch the headlight 203 from the high beam to the low beam is executed.

  As described above, in the second embodiment, when there is a possibility that the other vehicle C2 appears in the travel destination of the host vehicle C1, the headlight 203 of the host vehicle C1 is switched from the high beam to the low beam. The other vehicle C2 can travel comfortably and safely without giving glare to the vehicle. Further, in the second embodiment, when the host vehicle C1 reaches the reference point, it can be determined that the inter-vehicle distance is sufficiently separated and the other vehicle C2 has advanced ahead of the irradiation range of the headlight 203. In this case, switching control from the high beam to the low beam can be omitted.

  In the first and second embodiments, the high beam headlight 203b is turned off, the low beam headlight 203a is turned on, and the headlight 203 is switched from the high beam to the low beam. However, the headlight 203 changes the optical axis. In the case of providing a mechanism that performs this, a configuration may be adopted in which the high beam is switched to the low beam by changing the optical axis. Further, when the headlight 203 includes a mechanism for adjusting the light quantity, control for reducing the light quantity of the headlight 203 may be executed instead of executing the switching control from the high beam to the low beam.

  In the first and second embodiments, the application example in the scene where the host vehicle C1 merges from the side road to the main line has been described. However, in a situation where the other vehicle C2 cannot be confirmed from the host vehicle C1 such as a slope, a curve, or an intersection. Thus, the headlight control system according to the present application can be effectively utilized. In the first embodiment, the application example in the case where the host vehicle C1 and the other vehicle C2 run side by side has been described. Of course.

  The embodiment disclosed this time is to be considered as illustrative in all points and not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the meanings described above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

DESCRIPTION OF SYMBOLS 11 Detection apparatus 12 Roadside communication apparatus 20 Car lamp ECU (vehicle-mounted control apparatus)
21 control unit (determination unit, first and second calculation unit, inter-vehicle distance determination unit)
22 storage unit 23 communication unit 24 input unit (acquisition unit)
25 Output unit 30 In-vehicle communication device 201 LO drive unit 202 HI drive unit 203 Headlight (headlight)
203a low beam headlight 203b high beam headlight C vehicle C1 own vehicle C2 other vehicle

Claims (5)

A detection device for detecting a moving body moving on a road, a roadside communication device for transmitting information on the mobile body obtained by the detection device, an in-vehicle communication device capable of communicating with the roadside communication device, and the in-vehicle communication device A control system including an in-vehicle control device for controlling the operation of the equipment mounted on the vehicle based on the information from the roadside communication device acquired through
The in-vehicle control device is
Based on information from the roadside communication device, a determination unit that determines whether or not the mobile body detected by the detection device may appear in the travel destination of the vehicle;
When it is determined that there is a possibility that the moving body appears in the travel destination of the vehicle, control for changing the irradiation direction of the headlamp included in the vehicle downward, or control for reducing the light amount of the headlamp A control system comprising: a control unit that executes the control system. Information on the moving body detected by the detection device is acquired through communication between a roadside communication device connected to the detection device and an in-vehicle communication device mounted on the vehicle, and is mounted on the vehicle based on the acquired information. An in-vehicle control device for controlling the operation of the installed equipment,
Based on information from the roadside communication device, a determination unit that determines whether or not the mobile body detected by the detection device may appear in the travel destination of the vehicle;
When it is determined that there is a possibility that the moving body appears in the travel destination of the vehicle, control for changing the irradiation direction of the headlamp included in the vehicle downward, or control for reducing the light amount of the headlamp An in-vehicle control device comprising: a control unit that executes. The information on the moving body obtained by the detection device includes information on the position and moving speed of the moving body,
The determination unit
An acquisition unit for acquiring information relating to the position and travel speed of the vehicle;
A first calculation unit that calculates an arrival time until the vehicle reaches a specific point of a travel destination based on the information acquired by the acquisition unit;
Based on information acquired from the roadside communication device through the in-vehicle communication device, a second calculation unit that calculates an arrival time until the mobile body reaches the specific point; and
When the arrival time of the moving object calculated by the second calculation unit is shorter than the arrival time of the vehicle calculated by the first calculation unit, the moving object may appear at the travel destination of the vehicle. The in-vehicle control device according to claim 2, wherein the on-vehicle control device is determined. The determination unit
An inter-vehicle distance determination unit that determines whether or not a difference in distance between the mobile body and the vehicle is equal to or greater than a threshold when the vehicle reaches the specific point;
The controller is
The in-vehicle control device according to claim 3, further comprising: a prohibiting unit that prohibits the control of the headlamp by the control unit when it is determined that a difference in distance between the moving body and the vehicle is equal to or greater than the threshold. In the computer mounted on the vehicle,
Information of the moving body detected by the detection device is acquired through communication between the roadside communication device connected to the detection device and the in-vehicle communication device mounted on the vehicle,
Based on the acquired information, determine whether there is a possibility that the mobile body detected by the detection device appears in the destination of the vehicle,
When it is determined that there is a possibility that the moving body appears in the travel destination of the vehicle, control for changing the irradiation direction of the headlamp included in the vehicle downward, or control for reducing the light amount of the headlamp Execute Computer program for executing processing.

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