JP6211252B2 - Driving assistance device - Google Patents

Description

  The present invention relates to a driving support device that notifies a driver of starting.

  2. Description of the Related Art Conventionally, as a notification for initiating a start, a start delay notification for notifying a driver who does not start even though the traffic light has changed from red to blue is informed that the start is delayed. There is a driving support device that delays the timing for issuing a start delay notification based on traffic information such as the shape of an intersection, the type of a traffic light, or a traffic jam (see, for example, Patent Document 1).

JP 2010-152494 A

  In Patent Document 1, since the timing of notifying the start delay is delayed based only on traffic information, it cannot always be said that notification is made at an appropriate timing depending on other traveling conditions such as the weather.

  The present invention has been made to solve these problems, and is a driving support device capable of notifying the guidance of starting at a more appropriate timing by considering weather information in addition to traffic information. The purpose is to provide.

In order to solve the above problems, a driving support device according to the present invention is a driving support device that notifies a driver of starting guidance when starting from a state in which the host vehicle is stopped, and the host vehicle travels. Acquired by a traffic information acquisition unit that acquires traffic information indicating road traffic conditions by road-to-vehicle communication or vehicle-to-vehicle communication, a current position information acquisition unit that acquires information on the current position of the host vehicle, and a current position information acquisition unit The vehicle is started based on the weather information acquisition unit that acquires the weather information of the current position , the traffic information acquired by the traffic information acquisition unit, and the weather information acquired by the weather information acquisition unit. includes a start induction timing calculation unit that calculates a timing of starting the induction to induce, the start induction notifying unit to notify of starting the induction at the timing of the calculated start induced by start induction timing calculation unit, traffic information Is whether the other vehicle ahead of the host vehicle when it stops the vehicle is present information, the vehicle of whether the front of the vehicle when the stop is congestion information, and at the time of stopping the vehicle is information ahead of congestion length of the vehicle, the weather information, sunny information of the current position, a current cloudy information of the position, snowfall information rainfall information of the current position, and the current position, traffic The information acquisition unit determines whether there is another vehicle in front of the host vehicle when the host vehicle is stopped, whether the front of the host vehicle is congested when the host vehicle is stopped, and the own vehicle when the host vehicle is stopped. It is determined whether or not the length of traffic jam ahead of the vehicle is less than or equal to the threshold, and the traffic information coefficient is weighted according to the determination. Whether it is below the threshold and whether the amount of snow is below the threshold The weather information coefficient is weighted according to the determination, and the start guidance timing calculation unit uses the normal coefficient which is the initial value plus the weight of the traffic information coefficient and the weight of the weather information as the start guide coefficient. It calculates and the timing of start guidance is calculated according to the said start guidance coefficient .

According to the present invention, there is provided a driving support apparatus for notifying the start induction to the driver when the vehicle starts from a state where the vehicle is stopped, traffic information road-vehicle showing the traffic condition of the road on which the vehicle is traveling The traffic information acquisition unit that is acquired by communication or inter-vehicle communication, the current position information acquisition unit that acquires the current position information of the host vehicle, and the weather that acquires the weather information of the current position acquired by the current position information acquisition unit Start guidance that calculates the timing of start guidance that guides the start of the vehicle based on the traffic information acquired by the information acquisition unit, the traffic information acquisition unit, and the weather information acquired by the weather information acquisition unit a timing calculator, a start induction notifying unit to notify of starting the induction at the timing of starting the induction calculated by starting the induction timing calculation unit, traffic information, other vehicle ahead of the host vehicle when it stops the vehicle There whether information is present, the vehicle of whether the front of the vehicle when the stop is congestion information, and a front information congestion length of the vehicle at the time of stopping the vehicle, the weather information Is the clear information at the current position, the cloudy information at the current position, the rainfall information at the current position , and the snow cover information at the current position , and the traffic information acquisition unit is in front of the own vehicle when the own vehicle is stopped. Whether there is another vehicle in the vehicle, whether the front of the host vehicle is congested when the host vehicle is stopped, and whether the length of the traffic jam ahead of the host vehicle is equal to or less than the threshold when the host vehicle is stopped The traffic information coefficient is weighted according to the determination, and the weather information acquisition unit determines whether the weather is clear or cloudy, whether it is rain, whether the rainfall is below the threshold, and the amount of snow is below the threshold Whether or not the weather information The start guidance timing calculation unit calculates a start guide coefficient obtained by adding a weight of a traffic information coefficient and a weight of weather information to a normal coefficient which is an initial value, and starts according to the start guide coefficient. In order to calculate the timing of the guidance, it is possible to notify the guidance of the start at a more appropriate timing by considering the weather information in addition to the traffic information.

It is a figure which shows an example of a structure of the driving assistance apparatus by embodiment of this invention. It is a flowchart which shows an example of operation | movement of the driving assistance apparatus by embodiment of this invention. It is a flowchart which shows an example of the operation | movement which calculates the traffic information coefficient by embodiment of this invention. It is a flowchart which shows an example of the operation | movement which calculates the time information coefficient by embodiment of this invention. It is a flowchart which shows an example of the operation | movement which calculates the weather information coefficient by embodiment of this invention. It is a flowchart which shows an example of the operation | movement which calculates the road surface information coefficient by embodiment of this invention. It is a flowchart which shows an example of the operation | movement which calculates the visibility information coefficient by embodiment of this invention. It is a figure which shows an example of the operation | movement which calculates the start guidance coefficient by embodiment of this invention, and notifies start guidance.

  Embodiments of the present invention will be described below with reference to the drawings.

<Embodiment>
The driving assistance device 1 according to the present embodiment is for notifying the driver of starting guidance (hereinafter referred to as starting guidance) when the host vehicle starts moving (starts) from a stopped state. .

  A configuration of the driving support apparatus 1 according to the embodiment of the present invention will be described. FIG. 1 is a diagram illustrating an example of a configuration of a driving support apparatus 1 according to the present embodiment.

  The driving support apparatus 1 according to the present embodiment includes a vehicle forward information acquisition function unit 2, a traffic information acquisition function unit 3, a weather / road surface information acquisition function unit 4, a current position information acquisition function unit 5, a time information acquisition function unit 6, An acquisition information processing function unit 7, a start guidance coefficient calculation unit 8, and a start guidance notification function unit 9 are provided.

  The driving support apparatus 1 includes a mobile terminal 10, a camera 11, a DSRC (Dedicated Short Range Communication) 12, a VICS (Vehicle Information and Communication System) (registered trademark) 13, a GPS (Global Positioning System) 15, and a peripheral communication system 15. The clock 16, the display device 17, and the speaker 18 are connected.

  The vehicle front information acquisition function unit 2 (view information acquisition unit) acquires view information indicating a view situation in front of the host vehicle, and calculates a coefficient (view information coefficient) based on the acquired view information. The calculated coefficient of view information is output to the acquired information processing function unit 7. Visibility information is acquired by the roadside-to-vehicle communication by the camera 11 which can image | photograph the front of the own vehicle, and DSRC12.

  The traffic information acquisition function unit 3 (traffic information acquisition unit) acquires traffic information (traffic information around the host vehicle) indicating the traffic situation of the road on which the host vehicle travels, and a coefficient (traffic information) based on the acquired traffic information. Coefficient). The calculated coefficient of traffic information is output to the acquired information processing function unit 7. The traffic information is acquired from the road-to-vehicle communication by the DSRC 12 or the VICS 13 and the peripheral communication device 15. Here, the communication with the peripheral communication device 15 includes communication with a roadside device such as a traffic light or inter-vehicle communication with another vehicle. The traffic information includes information on whether or not another vehicle is present in the traveling direction (traveling direction) in which the host vehicle is traveling, traffic congestion information in the traveling direction, vehicle speed information on the traveling road, and the length of the traffic jam ( Congestion length) information is included.

  The current position information acquisition function unit 5 acquires information on the current position of the host vehicle from the GPS 14. The acquired current position information is output to the weather / road surface information acquisition function unit 4.

  The weather / road surface information acquisition function unit 4 (weather information acquisition unit) acquires the weather information based on the current position information input from the current position information acquisition function unit 5 (acquires weather information around the host vehicle). At the same time, road surface information (road surface information of the road on which the vehicle travels) is acquired, and coefficients (weather information coefficient, road surface information coefficient) are calculated based on each of the acquired weather information and road surface information. The calculated weather information coefficient and road surface information coefficient are output to the acquired information processing function unit 7. The weather information is acquired by the Internet via the mobile terminal 10 or road-to-vehicle communication by the DSRC 12. The weather information includes sunny information, cloudy information, rainfall information, and snow cover information. The road surface information is acquired by road-to-vehicle communication by the DSRC 12. The road surface information includes information indicating the road surface state, road wetness information, flooding information, snow cover information, and freezing information.

  The time information acquisition function unit 6 (time information acquisition unit) acquires time information from the clock 16 and calculates a coefficient (time information coefficient) based on the acquired time information. The calculated coefficient of time information is output to the acquired information processing function unit 7.

  The acquisition information processing function unit 7 acquires coefficients calculated by the vehicle front information acquisition function unit 2, the traffic information acquisition function unit 3, the weather / road surface information acquisition function unit 4, and the time information acquisition function unit 6, The acquired coefficients are output to the start guidance coefficient calculation unit 8.

  The starting guidance coefficient calculation unit 8 (starting guidance timing calculation unit) calculates a starting guidance coefficient for guiding the start of the host vehicle based on the coefficient of each information acquired from the acquired information processing function unit 7, and the starting guidance coefficient To determine (calculate) the timing for notifying start guidance. The determined notification timing is output to the start guidance notification function unit 9.

  The start guidance notification function unit 9 (start guide notification unit) notifies the start guide via the display device 17 or the speaker 18 based on the timing of notifying the start guide acquired from the start guide coefficient calculation unit 8. Notification of start guidance (hereinafter referred to as start guide notification) is notified by displaying, for example, for the display device 17, and is notified by outputting sound for the speaker 18.

  Next, operation | movement of the driving assistance apparatus 1 by this Embodiment is demonstrated.

  FIG. 2 is a flowchart showing an example of the operation of the driving support apparatus 1 according to the present embodiment.

  In step S201, it is determined whether or not a process for calculating the timing of the start guidance notification is to be performed. If the process is to be performed, the process proceeds to step S202. If the process is not to be performed, the process is terminated without performing the subsequent processes. Whether or not to execute the process is determined based on, for example, whether or not the host vehicle is stopped. When it is determined that the host vehicle is stopped, the process proceeds to step S202, and when the host vehicle is traveling, the process ends.

  In step S202, it is determined whether the traffic information acquisition function unit 3 has acquired traffic information. When the traffic information is acquired, the process proceeds to step S203, and when the traffic information is not acquired, the process proceeds to step S204.

  In step S203, the traffic information acquisition function unit 3 performs a traffic information coefficient calculation process. After calculating the traffic information coefficient, the process proceeds to step S204.

  In step S204, it is determined whether or not the time information acquisition function unit 6 has acquired time information. If the time information has been acquired, the process proceeds to step S205. If the time information has not been acquired, the process proceeds to step S206.

  In step S205, the time information acquisition function unit 6 performs a time information coefficient calculation process. After calculating the time information coefficient, the process proceeds to step S206.

  In step S206, it is determined whether the weather / road surface information acquisition function unit 4 has acquired weather information and road surface information. If at least one of the weather information and the road surface information is acquired, the process proceeds to step S207. If both the weather information and the road surface information are not acquired, the process proceeds to step S208.

  In step S207, the weather / road surface information acquisition function unit 4 performs a weather information coefficient and road surface coefficient calculation process. After calculating the weather information coefficient and the road surface information coefficient, the process proceeds to step S208.

  In step S208, it is determined whether the vehicle front information acquisition function unit 2 has acquired the visibility information. If the view information is acquired, the process proceeds to step S209. If the view information is not acquired, the process proceeds to step S210.

  In step S209, the vehicle front information acquisition function unit 2 performs a visibility information coefficient calculation process. After calculating the visibility information coefficient, the process proceeds to step S210.

  In step S210, the start induction coefficient calculation unit 8 performs a start induction coefficient calculation process. After the start induction coefficient is calculated, the process proceeds to step S210.

  In step S211, the start guidance notification function unit 9 notifies the start guide at a timing based on the start guide coefficient calculated by the start guide coefficient calculation unit 8.

  Although not shown, between step S209 and step S210, the acquisition information processing function unit 7 includes a vehicle front information acquisition function unit 2, a traffic information acquisition function unit 3, a weather / road surface information acquisition function unit 4, And the coefficient calculated by each of the time information acquisition function part 6 is acquired, and the process which outputs each acquired coefficient to the start induction coefficient calculation part 8 is performed.

  Next, calculation of the traffic information coefficient in the traffic information acquisition function unit 3 will be described.

  FIG. 3 is a flowchart showing an example of an operation for calculating a traffic information coefficient according to the present embodiment. Note that the operation shown in FIG. 3 corresponds to the processing in step S203 in FIG.

  In step S301, the traffic information acquisition function unit 3 acquires traffic information from the DSRC 12, the VICS 13, or the peripheral communication device 15.

  In step S302, based on the traffic information acquired in step S301, it is determined whether there is another vehicle in the traveling direction. If there is no other vehicle, the process proceeds to step S303 and the coefficient 1 is calculated. On the other hand, if there is another vehicle, the process proceeds to step S304.

  In step S304, based on the traffic information acquired in step S301, it is determined whether the travel direction is congested. If there is no traffic jam, the process proceeds to step S305 to calculate the coefficient 2. On the other hand, if there is a traffic jam, the process proceeds to step S306.

  In step S306, based on the traffic information acquired in step S301, it is determined whether or not the traveling speed is equal to or less than a threshold value. If the traveling speed is not less than or equal to the threshold value, the process proceeds to step S307 and the coefficient 3 is calculated. On the other hand, if the traveling speed is equal to or less than the threshold, the process proceeds to step S308.

  In step S308, based on the traffic information acquired in step S301, it is determined whether the congestion length is equal to or less than a threshold value. If the traffic jam length is not less than or equal to the threshold, the process proceeds to step S309 to calculate the coefficient 4. On the other hand, when the traffic jam length is equal to or smaller than the threshold value, the process proceeds to step S310 and the coefficient 5 is calculated.

  By performing the above processing (steps S301 to S310), coefficients 1 to 5 corresponding to the traffic conditions of the road on which the host vehicle travels are calculated. The coefficients 1 to 5 are weighted, and the weighting increases from the coefficient 1 toward the coefficient 5. That is, the weighting increases as the number of factors that hinder the traveling of the host vehicle increases.

  Next, calculation of the time information coefficient in the time information acquisition function unit 6 will be described.

  FIG. 4 is a flowchart showing an example of the operation for calculating the time information coefficient according to the present embodiment. Note that the operation shown in FIG. 4 corresponds to the processing in step S205 in FIG.

  In step S <b> 401, the time information acquisition function unit 6 acquires time information from the clock 16.

  In step S402, based on the time information acquired in step S401, it is determined whether the time is daytime. Here, “daytime” refers to a predetermined time zone in which the day is rising, such as a time zone from 6 am to 4 pm. If it is daytime, the process proceeds to step S403 to calculate the coefficient 1. On the other hand, if it is not daytime, the process proceeds to step S404.

  In step S404, it is determined whether the time is evening or dawn based on the time information acquired in step S401. Here, the evening means a predetermined time zone when the sun goes down, such as a time zone from 4 pm to 6 pm. The dawn means a predetermined time zone at dawn, such as a time zone from 4 am to 6 am. If it is evening or dawn, the process proceeds to step S405 to calculate the coefficient 2. On the other hand, when it is not evening or dawn (that is, when the day is not sunny), the process proceeds to step S406, and the coefficient 3 is calculated.

  By performing the above processing (steps S401 to S406), coefficients 1 to 3 corresponding to the time are calculated. The coefficients 1 to 3 are weighted, and the weighting increases from the coefficient 1 toward the coefficient 3. That is, the weighting increases as the driving becomes difficult.

  Next, calculation of the weather information coefficient in the weather / road surface information acquisition function unit 4 will be described.

  FIG. 5 is a flowchart showing an example of the operation for calculating the weather information coefficient according to the present embodiment. Note that the operation shown in FIG. 5 corresponds to the processing in step S207 in FIG.

  In step S <b> 501, the weather / road surface information acquisition function unit 4 acquires weather information from the Internet via the mobile terminal 10 based on the current position information acquired from the current position information acquisition function unit 5. Alternatively, weather information is acquired by road-to-vehicle communication by DSRC 12.

  In step S502, it is determined whether the weather is clear or cloudy based on the weather information acquired in step S501. If it is sunny or cloudy, the process proceeds to step S503 to calculate the coefficient 1. On the other hand, if it is not sunny or cloudy, the process proceeds to step S504.

  In step S504, it is determined whether the weather is rain based on the weather information acquired in step S501. If it is raining, the process proceeds to step S505, and if it is not raining, the process proceeds to step S508.

  In step S505, it is determined whether or not the rainfall is below a threshold value. If the rainfall is below the threshold, the process proceeds to step S506 and the coefficient 2 is calculated. On the other hand, if the rainfall is not less than or equal to the threshold, the process proceeds to step S507 to calculate the coefficient 3.

  In step S508, it is determined whether the amount of snow is equal to or less than a threshold value. If the amount of snow is less than or equal to the threshold, the process proceeds to step S509 to calculate the coefficient 4. On the other hand, if the amount of snow is not less than or equal to the threshold value, the process proceeds to step S510 to calculate the coefficient 5.

  By performing the above processing (steps S501 to S510), coefficients 1 to 5 corresponding to the weather conditions are calculated. The coefficients 1 to 5 are weighted, and the weighting increases from the coefficient 1 toward the coefficient 5. That is, weighting increases as the weather conditions worsen.

  Next, calculation of the road surface information coefficient in the weather / road surface information acquisition function unit 4 will be described.

  FIG. 6 is a flowchart illustrating an example of an operation for calculating a road surface information coefficient according to the present embodiment. The operation shown in FIG. 6 corresponds to the processing in step S207 in FIG.

  In step S <b> 601, the weather / road surface information acquisition function unit 4 acquires road surface information through road-to-vehicle communication by the DSRC 12.

  In step S602, it is determined whether or not the road surface condition is good based on the road surface information acquired in step S601. If the road surface condition is good, the process proceeds to step S603 to calculate the coefficient 1. On the other hand, if the road surface condition is not good, the process proceeds to step S604. Here, whether or not the road surface condition is good is determined based on, for example, whether the road surface is dry or wet. When the road surface is dry, it is determined that the road surface state is good, and when the road surface is wet, it is determined that the road surface state is not good.

  In step S604, based on the road surface information acquired in step S601, it is determined whether or not the wetness of the road surface is equal to or less than a threshold value. If the wetting is less than or equal to the threshold, the process proceeds to step S605 to calculate the coefficient 2. On the other hand, if the wetness is not less than or equal to the threshold value, the process proceeds to step S606.

  In step S606, based on the road surface information acquired in step S601, it is determined whether or not the road surface is flooded. If it is flooded, the process proceeds to step S607 to calculate the coefficient 3. On the other hand, when it is not flooded, it transfers to step S608.

  In step S608, based on the road surface information acquired in step S601, it is determined whether the amount of snow on the road surface is equal to or less than a threshold value. If the amount of snow is less than or equal to the threshold, the process proceeds to step S609 to calculate the coefficient 4. On the other hand, if the amount of snow is not less than the threshold, the process proceeds to step S610.

  In step S610, it is determined whether the road surface is frozen based on the road surface information acquired in step S601. If it is not frozen, the process moves to step S611 to calculate the coefficient 5. On the other hand, if it is frozen, the process proceeds to step S612 to calculate the coefficient 6.

  By performing the above processing (steps S601 to 612), coefficients 1 to 6 corresponding to the road surface condition are calculated. The coefficients 1 to 6 are weighted, and the weighting increases from the coefficient 1 toward the coefficient 6. That is, the weighting increases as the road surface condition gets worse.

  Next, calculation of the visibility information coefficient in the vehicle front information acquisition function unit 2 will be described.

  FIG. 7 is a flowchart showing an example of an operation for calculating the visibility information coefficient according to the present embodiment. Note that the operation shown in FIG. 7 corresponds to the processing in step S209 in FIG.

  In step S <b> 701, the vehicle front information acquisition function unit 2 acquires the visibility information by road-to-vehicle communication using the vehicle-mounted camera 11 or the DSRC 12.

  In step S702, it is determined whether the field of view is good based on the field-of-view information acquired in step S701. Whether or not the field of view is good can be determined, for example, by performing image processing on an image captured by the camera 11. If the field of view is good, the process proceeds to step S703 to calculate the coefficient 1. On the other hand, if the field of view is not good, the process proceeds to step S704.

  In step S704, based on the view information acquired in step S701, it is determined whether the view state is equal to or less than a threshold value. The threshold value of the visibility situation is obtained by setting a predetermined threshold value by image processing, for example. If the visibility state is less than or equal to the threshold value, the process proceeds to step S705 to calculate the coefficient 2. On the other hand, if the visibility state is not less than or equal to the threshold value, the process proceeds to step S706 to calculate the coefficient 3.

  By performing the above processing (steps S701 to S706), the coefficients 1 to 3 corresponding to the visibility conditions are calculated. Each of the coefficients 1 to 3 is weighted, and the weight increases from the coefficient 1 toward the coefficient 3. That is, the weighting increases as the visibility situation becomes worse.

  Next, an operation in which the start induction coefficient calculation unit 8 calculates a start induction coefficient and the start induction notification function unit 9 performs a guidance notification will be described.

  FIG. 8 is a diagram illustrating an example of an operation for calculating a start guide coefficient and notifying start guide according to the present embodiment. Note that the operation shown in FIG. 8 corresponds to the processing in steps S210 and S211 in FIG.

  In step S801, the start induction coefficient calculation unit 8 has a Normal coefficient that is an initial value of the start induction coefficient.

  In step S <b> 802, a traffic information coefficient is acquired from the acquired information processing function unit 7.

  In step S803, the traffic information coefficient weighted in step S802 (see FIG. 3) is added to the normal coefficient.

  In step S804, a time information coefficient is acquired from the acquired information processing function unit 7.

  In step S805, the weight of the time information coefficient acquired in step S804 (see FIG. 4) is added to the normal coefficient.

  In step S806, the weather information coefficient is acquired from the acquired information processing function unit 7.

  In step S807, the weight of the weather information coefficient acquired in step S806 (see FIG. 5) is added to the normal coefficient.

  In step S808, a road surface information coefficient is acquired from the acquired information processing function unit 7.

  In step S809, the weighting of the road surface information coefficient acquired in step S808 (see FIG. 6) is added to the normal coefficient.

  In step S810, the visibility information coefficient is acquired from the acquisition information processing function unit 7.

  In step S811, the weight of the view information coefficient acquired in step S810 (see FIG. 7) is added to the normal coefficient.

  In step S812, the normal coefficient added with the weight of each information coefficient is determined (calculated) as the start guidance coefficient, and the start guide notification timing is calculated based on the start guide coefficient. For example, if the start guide coefficient is large, the start guide notification timing may be delayed. That is, the timing of the start guidance notification can be made variable according to the start guide coefficient.

  In step S813, the start guidance notification function unit 9 performs a start guide notification via the display device 17 and the speaker 18 at a predetermined timing based on the start guide notification timing calculated by the start guide coefficient calculation unit 8. . For example, the content that prompts the start may be displayed on the display device 17 or may be output as audio from the speaker 18. Moreover, you may notify using both the display apparatus 17 and the speaker 18. FIG.

  From the above, according to the present embodiment, it is possible to notify the start guidance at a more appropriate timing by considering weather information in addition to traffic information. Therefore, even if the weather is bad, the driver can start the vehicle more safely.

  Note that the driving support device 1 according to the present embodiment notifies the start guidance when the host vehicle starts (starts) from a stopped state. Specific examples of the situation where the host vehicle has stopped include: When the vehicle is stopped due to a red light at an intersection, when stopping at a traffic light or pedestrian crossing on a single road without an intersection, or when stopping due to traffic, When leaving, there are cases where it is paused on the shoulder, but it is not limited to this.

  In the present embodiment, the case of acquiring traffic information in the traveling direction of the host vehicle has been described. However, the present invention is not limited to this, and road information according to the environment of the road on which the host vehicle is traveling can be acquired. For example, when the host vehicle makes a left turn at an intersection, traffic information regarding a left turn road, information on a pedestrian existing on a pedestrian crossing, and the like may be acquired. As the start guidance notification, for example, it may be notified that the road at the left turn is congested or that a pedestrian is present. In this way, for example, even when the weather and visibility are poor, the driver can be notified of start guidance at an appropriate timing.

  The driving support device 1 according to the present embodiment may be mounted on, for example, a navigation device or may be provided outside the navigation device.

  The mobile terminal 10 may be any terminal that can be connected to the Internet, such as a mobile phone or a card terminal.

  The display device 17 may be a monitor provided in the navigation device.

  The traffic information acquisition function unit 3 acquires traffic information from the DSRC 12, the VICS 13, or the peripheral communication device 15, but any means may be used as long as the traffic information can be acquired.

  In the present embodiment, weighting is performed by comparing each coefficient in each information, but weighting may be performed in consideration of the priority between each information. For example, the weather information may be weighted more than the time information.

  The road surface information is acquired by the weather / road surface information acquisition function unit 4, but may be acquired by the traffic information acquisition function unit 3, or a function unit for acquiring road surface information may be newly provided. .

  Moreover, although the start guidance coefficient calculation part 8 demonstrated changing the timing of the start guidance notification according to a start guidance coefficient, not only this but outputting from the display apparatus 17 and the speaker 18 according to start guidance. The content of the message may be changed.

  In the present invention, the embodiments can be appropriately modified and omitted within the scope of the invention.

  DESCRIPTION OF SYMBOLS 1 Driving assistance device, 2 Vehicle front information acquisition function part, 3 Traffic information acquisition function part, 4 Weather / road surface information acquisition function part, 5 Current position information acquisition function part, 6 Time information acquisition function part, 7 Acquisition information processing function part 8, start guidance coefficient calculation unit, 9 start guidance notification function unit, 10 portable terminal, 11 camera, 12 DSRC, 13 VICS, 14 GPS, 15 peripheral communication device, 16 clock, 17 display device, 18 speaker.

Claims (2)

A driving support device that notifies the driver of start guidance when the host vehicle starts from a stopped state,
A traffic information acquiring section for acquiring traffic information indicating traffic conditions of the road on which the vehicle is traveling by road-vehicle communication or vehicle-to-vehicle communication,
A current position information acquisition unit for acquiring information of a current position of the host vehicle;
A weather information acquisition unit for acquiring weather information of the current position acquired by the current position information acquisition unit;
A start guidance for calculating a start guidance timing for guiding the start of the host vehicle based on the traffic information acquired by the traffic information acquisition unit and the weather information acquired by the weather information acquisition unit A timing calculation unit;
And starting the induction notifying unit to notify of the start induced by the timing of the start induction calculated by said start induction timing calculation unit,
With
The traffic information is information whether there is another vehicle ahead of the host vehicle when the host vehicle is stopped , information whether the front of the host vehicle is congested when the host vehicle is stopped , And information on the length of traffic jam ahead of the host vehicle when the host vehicle is stopped ,
The weather information, the clear information of the current position, the clouding of information of the current position, the rainfall information of the current position, and the a snowfall information on the current position,
The traffic information acquisition unit, whether the other vehicle is present in front of the own vehicle when the own vehicle is stopped, whether the front of the own vehicle is congested when the own vehicle is stopped, and Determining whether the traffic jam ahead of the host vehicle when the host vehicle is stopped is less than or equal to a threshold, and weighting the traffic information coefficient according to the determination,
The weather information acquisition unit determines whether the weather is sunny or cloudy, whether it is rain, whether the amount of rainfall is equal to or less than a threshold, and whether the amount of snow is equal to or less than a threshold, and weather information according to the determination Weight the coefficients,
The start guidance timing calculation unit calculates a start guide coefficient obtained by adding a weight of the traffic information coefficient and a weight of the weather information to a normal coefficient that is an initial value, and the start guide according to the start guide coefficient A driving support device that calculates the timing of the vehicle. A time information acquisition unit for acquiring time information;
The time information is information on whether it is daytime and information on whether it is evening or dawn,
The time information acquisition unit determines whether it is daytime and whether it is evening or dawn, and weights the time information coefficient according to the determination,
The start guidance timing calculation unit calculates the start guide coefficient by adding a weight of the traffic information coefficient, a weight of the weather information, and a weight of the time information coefficient to the normal coefficient, and the start guide The driving support device according to claim 1, wherein the start guidance timing is calculated according to a coefficient .

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