JP2010134838A - Information provision device and information provision method for vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide information in a mode according to the situation of a driver. <P>SOLUTION: The information provision device for a vehicle is provided with: an information acquisition part 10 acquiring road information related to the location of a roadside device 400 and an attribute of a spot on a road; and a presentation control part 20 having a first distance calculation part 21 calculating a first distance to a stop spot from the vehicle based on a present position of the vehicle calculated by use of the location of the roadside device 400 and the position of the stop spot of the vehicle of the road defined in advance, a second distance calculation part 22 calculating a second distance from the roadside device 400 to an intersection located in a traveling direction of the vehicle based on the road information and the location of the roadside device 400, a third distance calculation part 23 calculating a third distance to the intersection from the stop spot obtained from the first distance and the second distance, a vehicle information acquisition part 24 acquiring vehicle information from the vehicle side, and a control part 25 controlling the presentation mode of the information provided to the driver of the vehicle based on the vehicle information, the first distance, the second distance, and the third distance. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an information providing apparatus and an information providing method for a vehicle that provide information related to driving of the vehicle.

  For this type of device, if it is necessary to pause in front of the direction of travel, an alarm is generated based on the distance from the host vehicle to the stop point, the host vehicle speed, and the deceleration at the previous stop. The technique to perform is known (refer patent document 1).

JP 2000-46574 A

  However, with this technology, an alarm is generated based on the deceleration at the time of the past pause, but some users may decelerate on the stop line and do not stop. Since the previously started warning is continuously provided, the driver's attention level in the vicinity of the intersection is reduced, and there is a problem that the reliability of the warning is lowered.

  The problem to be solved by the present invention is to provide a highly reliable alarm.

  The present invention is based on the first distance, the second distance, and the third distance calculated from the road information related to the installation position of the roadside device and the attribute of the road, and the vehicle information acquired from the vehicle side. The above-mentioned problem is solved by controlling the presentation mode of the information provided to the person.

  Since the information presentation form changes according to the driving operation of the driver and the distance from the stop line to the intersection, the driver's attention can be appropriately drawn from the stop line in the vicinity of the intersection, so that the reliability of the alarm is improved. Can do.

  An information providing system 100 according to this embodiment will be described with reference to the drawings.

  FIG. 1 is a diagram showing an overall outline of an in-vehicle device 1000 including an information providing system 100 and a roadside device 400 installed at a predetermined position on a road, and FIG. 2 includes the roadside device 400 and the information providing system 100. It is a block block diagram of the vehicle-mounted apparatus 1000. FIG.

  First, the roadside device 400 will be described. The roadside device 400 installed on the roadside is a roadside infrastructure device that exchanges information through bidirectional communication with the information providing system 100 mounted on the vehicle. The roadside device 400 of this embodiment forms part of a so-called ITS (Intelligent Transport Systems) or other advanced information communication network.

  The roadside device 400 of the present embodiment includes a communication device 410, a determination unit 420, a database 430, and a moving body sensor 440.

  The communication device 410 has bidirectional communication functions such as an optical beacon 411 and a wireless communication function 412. The optical beacon 411 detects the presence of a vehicle in the detection area by two-way communication with a vehicle existing in a predetermined detection area (to be detected). The wireless communication function 412 complies with DSRC (Dedicated Short Range Communication), UWB (Ultra Wide Band), MCA (Multi Channel Access System) wireless system, Bluetooth (registered trademark), IEEE 802.11 system, and other wireless LAN standards. A function for performing wireless communication may be provided.

  The determination unit 420 functions as an arithmetic device that performs various information operations. The determination unit 420 processes information provided to the information providing system 100 on the vehicle side, and exchanges information with a center that centrally manages traffic information. The determination unit 420 can process the vehicle and pedestrian information detected by the mobile body sensor 440 of the roadside device 400 and the information detected by the mobile body sensor 440 of another roadside device 400 ′.

  The database 430 manages information used for processing of the determination unit 420. Information to be managed includes road information 431, installation position of the roadside device 400 (installation position of the optical beacon 411) 432, information 433 regarding the communication zone (area) where the optical beacon signal can be transmitted and received, and moving body information 434. Including.

The road information 431 includes information on the position of a predefined point (node) and other point attributes, for example, the point is a central point of an intersection, the point is a stop point on a stop line, and the point is an optical beacon 411. Include the attribute of a point such as a point directly below. Further, the road information 431 includes the position of the point (for example, latitude and longitude). Furthermore, the road information includes distance information between points (nodes).

The road information 431 includes the distance from the installation position of the roadside device 400 (installation position of the optical beacon 411) to the stop line (stop point), the installation position of the roadside device 400 (installation position of the optical beacon 411) to the center of the intersection. Including the distance.

  The mobile object information 434 is information indicating the presence of a mobile object in the vicinity of a junction such as an intersection. This moving body information 434 is detected by a moving body sensor 440 of a roadside device provided on the roadside. As a method for detecting a moving object, a known method such as a method using a captured image, a method using an infrared image, or a method using wireless communication can be used.

  Further, the traffic information 435 is information that supports traveling of the vehicle, such as traffic jam information, accident information, construction information, curve information, pedestrian crossing information, and the like. The traffic information 435 is acquired from a center where the roadside device 400 can exchange information.

  Next, the in-vehicle device 1000 including the information providing system 100 will be described.

  As shown in FIG. 2, the in-vehicle device 1000 includes an information providing system 100, a vehicle controller 200, an in-vehicle sensor 300, a navigation device 500, and an output device 600. The information providing system 100 and each of the devices 200 to 600 are connected by a CAN (Controller Area Network) or other vehicle-mounted LAN, and exchange information with each other.

The information providing system 100 of the present embodiment includes an information acquisition unit 10 that realizes a function of acquiring information, and a presentation control unit 20 that controls information presentation processing.

The information acquisition unit 10 and the presentation control unit 20 of the information providing system 100 constitute a part of the arithmetic device. This computing device functions as an information providing system 100 by executing a ROM (Read Only Memory) storing a program for executing the information providing process according to the present embodiment and a program stored in the ROM. A CPU (Central Processing Unit) as an operation circuit and a RAM (Random Access Memory) functioning as an accessible storage device are provided. As an operation circuit, instead of or in addition to a CPU (Central Processing Unit), an MPU (Micro Processing Unit), a DSP (Digital Signal Processor), an ASIC (Application Specific Integrated Circuit), an FPGA (Field Programmable Gate Array), etc. Can be used. These hardware cooperates with software that realizes an information acquisition function and an information presentation control function, and executes information provision processing.

  Each configuration will be described below.

  First, the information acquisition unit 10 will be described. The information acquisition unit 10 includes a communication function 11 that performs communication with the communication device 410 of the roadside device 400, and an antenna 12 for performing communication. From the roadside device 400, the installation position of the roadside device 400 and the point of the road Get road information about attributes. In communication with the roadside device 400, the information acquisition unit 10 includes not only information related to the attributes of points in the vicinity of the host vehicle but also information related to attributes of a plurality of points existing along the traveling direction of the road on which the host vehicle travels. Get road information. The information acquisition unit 10 of the present embodiment acquires information on the center point of an intersection that exists particularly along the traveling direction and information on the attribute of the stop point on the stop line that requests the vehicle to stop. This stop line defines a position when the vehicle stops at an intersection or a T-junction.

  Information on the attribute of the point on the road includes the position of the predetermined point (hereinafter also referred to as a node), the attribute of the node (information that the node belongs to the intersection center area, the node belongs to the right (left) turn area, etc.) including. The location on the road may include the installation position of the optical beacon of the roadside device 400.

  Furthermore, the information acquisition unit 10 acquires the moving body information 434 related to the moving body moving on the road from the roadside device 400.

  Such road information is stored in the database 430 of the roadside device 400. Of course, you may acquire from an external road information provision server via a network.

  Next, the presentation control unit 20 will be described. The presentation control unit 20 of the present embodiment includes a first distance calculation unit 21, a second distance calculation unit 22, a third distance calculation unit 23, a vehicle information acquisition unit 24, and a control unit 25. The presentation mode of the information provided to the driver is controlled.

  First, each function of the 1 distance calculation part 21, the 2nd distance calculation part 22, and the 3rd distance calculation part 23 is demonstrated.

FIG. 3 is a diagram illustrating the relationship between the first distance, the second distance, and the third distance calculated by these, the current position of the vehicle, the installation position of the roadside device 400, the position of the intersection, and the position of the stop line. .

  First, the first distance calculation unit 21 will be described. The first distance calculation unit 21 of the present embodiment is defined in advance as the current position of the vehicle calculated using the installation position of the roadside device 400 acquired via the communication device 410 when communicating with the roadside device 400. The first distance from the vehicle to the stop point is calculated based on the position of the stop point of the vehicle on the road. This first distance is shown as L in FIG.

  In calculating the first distance, the first distance calculation unit 21 first calculates the current position R of the vehicle when communicating with the roadside device 400.

As shown in FIG. 1, the projector / receiver of the optical beacon 411 of the roadside device 400 of the present embodiment has a predetermined height just above the center position of the width W of the road (for example, a height of 5.5 m from the road surface). Installed. The optical beacon 411 emits near infrared rays toward a predetermined communication area (downlink). Since the near infrared ray emitted from the optical beacon 411 has high directivity, a predetermined communication area can be set.

When the vehicle enters the predetermined communication area of the roadside device 400, the information acquisition unit 10 sends a response signal (uplink) to the signal transmitted from the roadside device 400. If the roadside device 400 can receive a response signal (uplink) from the in-vehicle information providing system 100, it can be seen that the vehicle enters a predetermined communication area and exists near the installation position of the roadside device 400. In addition, if the timing at which the vehicle enters the predetermined communication area is known, the current position of the vehicle can be calculated based on the installation position information of the roadside device 400.

The first distance calculation unit 21 of the present embodiment acquires the installation position of the roadside device 400, the position of the node closest to the roadside device 400, or the position of a node included in the communication zone of the roadside device 400 from the roadside device 400. Then, one of the points is defined as the current position R when the information providing system 100 communicates with the roadside device 400.

In the present embodiment, the installation position P of the roadside apparatus 400 (the installation position of the optical beacon 411) is calculated as the current position of the vehicle when communicating with the roadside apparatus 400. That is, the position of the vehicle at the timing when the vehicle on which the information providing system 100 is mounted enters the communication zone is regarded as the antenna installation position P of the roadside device 400.

Note that the first distance calculation unit 21 may acquire the current position R of the host vehicle from the current position detection function 501 of the navigation device 500. The current position R is preferably the current position R when the information providing system 100 communicates with the roadside device 400. In this case, the current position detection function 501 performs positioning using GPS (Global Positioning System).

  Further, the first distance calculation unit 21 refers to the road information 431 and extracts a stop point S (a point on the stop line) on the road including the current position R of the vehicle and in the traveling direction of the vehicle. The traveling direction of the vehicle is determined by a normal method from the detection information of the vehicle controller 200, the in-vehicle sensor 300, the detection information of the navigation device 500, or the road attribute (information identifying the up lane or the down lane) of the road side device 400. can do.

  Then, the first distance calculation unit 21 determines the vehicle at the time of communication with the roadside device 400 based on the coordinate value (for example, latitude / longitude) of the current position R and the coordinate value (for example, latitude / longitude) of the stop point S. A first distance L from the current position R to the stop point S is calculated.

Moreover, when calculating the first distance L from the current position R of the vehicle to the stop point S, the first distance calculation unit 21 preferably takes into account the distance that the host vehicle has already moved. From the above-mentioned “distance from the installation position P of the optical beacon 411 of the roadside device 400 to the stop position S on the temporary stop line” described above, the “control unit 25 of the present embodiment starts from the installation position P of the optical beacon 411 of the roadside device 400. A distance obtained by subtracting “distance traveled for a predetermined time” is calculated as “the first distance Lr from the current position of the vehicle (after movement) to the stop point”.

  Next, the second distance calculation unit 22 will be described. The second distance calculation unit 22 calculates a second distance from the road device 400 to the intersection existing in the traveling direction of the vehicle based on the acquired installation position of the road device 400 and the road information 431. This second distance is shown as Q in FIG. In the present embodiment, the distance between the installation position of the roadside device 400 (the installation position P of the optical beacon) and the intersection Y is obtained as the second distance Q.

  Further, the third distance calculation unit 23 will be described. The third distance calculation unit 23 calculates the third distance from the stop point to the intersection obtained from the first distance L and the second distance Q described above. This third distance is shown as W in FIG. In the present embodiment, the third distance W is calculated from the difference between the first distance L and the second distance Q previously calculated. This third distance is proportional to the time required for turning at the intersection existing downstream of the stop point S. In other words, the longer the third distance, the longer it takes for the vehicle to bend the intersection.

  Next, the vehicle information acquisition unit 24 will be described. The vehicle information acquisition unit 24 of the present embodiment acquires vehicle speed information, brake operation information, accelerator operation information, shift position information, and steering angle information from the vehicle side.

The vehicle speed information includes the vehicle speed of the vehicle at a predetermined timing. The brake operation information includes information indicating that the brake is stepped on at a predetermined timing (brake on) or information indicating that the brake control is released at a predetermined timing (brake off). The accelerator operation information includes information indicating that the accelerator has been stepped on at a predetermined timing (accelerator on), information indicating that accelerator control has been released at a predetermined timing (accelerator off), and the accelerator is stepped on at a predetermined timing. This includes control (in which the amount of depression increases) or control in which the accelerator is depressed (increase in amount of depression). The shift position information includes information indicating that a downshift operation has been performed at a predetermined timing and information indicating that a shift up operation has been performed at a predetermined timing. The steering angle information includes information indicating that steering is performed at a predetermined timing and the amount of steering.

These pieces of information are detected by each in-vehicle sensor 300. Specifically, vehicle speed information is detected by a vehicle speed sensor 301, brake operation information is detected by a brake sensor 302, accelerator operation information is detected by an accelerator sensor 303, shift position information is detected by a shift position sensor 304, Steering angle information is detected by a steering angle sensor 305.

The vehicle information acquisition unit 24 acquires these pieces of information directly from the in-vehicle sensor 300 or via the vehicle controller 200.

Next, the control unit 25 will be described.

The control unit 25 includes vehicle information acquired by the vehicle information acquisition unit 24, a first distance calculated by the first distance calculation unit 21, a second distance calculated by the second distance calculation unit 22, and a third distance. Based on the third distance calculated by the distance calculation unit 23, the presentation mode of information to be provided to the driver of the vehicle is controlled.

The information provided here relates to information that informs the existence of a stop line or stop point, other first notification information related to the stop point, and merge points (intersections, etc.) located downstream of the stop point related to the first notification information. Second notification information. The second notification information is information that informs the existence of an intersection, information that pays attention to joining (cueing) at the intersection, information that informs the existence of a joining vehicle when passing the intersection, and other information for supporting driving of the intersection. It is.

In addition, the information presentation mode is the above-described timing mode for starting the presentation of information, the mode of timing for ending the presentation of information, the mode of continuing to present information, the mode of repeating the presentation of information, and the presentation of information. The mode of the timing which switches time, the content of the information to show, and the content of the information is included.

If the timing of starting the presentation of information, the timing of ending the presentation of information is not appropriate, or if the presentation time of information is not appropriate, the reliability of the information is reduced and the original purpose of information presentation is not achieved, It reduces the degree of attention to the user information.

In the present embodiment, the information presentation mode is appropriately controlled based on the vehicle information reflecting the driving situation of the driver and the first distance, the second distance, and the third distance. Since the start timing and end timing of the vehicle and the presentation time thereof are appropriate, the driver's attention can be maintained high.

Specifically, the control unit 25 determines the required stop distance required until the vehicle stops based on the vehicle information acquired by the vehicle information acquisition unit 24 and the first distance L calculated by the first distance calculation unit 21. When the required stop distance is equal to or greater than the first distance L, the output of the first notification information for notifying the presence of the stop point is started.

Here, the control unit 25 calculates the required stop distance based on the speed of the vehicle included in the vehicle information and the deceleration when the preset vehicle is safely stopped. The method for calculating the required stop distance is not particularly limited, but in the present embodiment, the required stop distance is calculated by the following equation (1).

Ln = Vnow × (Tp + Td ) + (Vnow) 2 / 2D ··· (1) equation However, "Vnow" is the current vehicle speed, "Tp" is the vehicle-mounted device processing time is predefined, "Td" is predefined The driver reaction time, “D”, is a preset deceleration.

If the distance required for the vehicle to stop safely is longer than the distance from the current position R to the stop point S on the stop line, the control unit 25 determines that the driver needs to be alerted and stops. The output of the 1st alerting | reporting information which calls attention to a line is started.

In addition, the control unit 25 compares the “first distance Lr to the current position of the vehicle and the stop point” calculated in consideration of the distance that the host vehicle has already moved with the required stop distance Ln, It may be determined whether or not it is necessary to call attention.

Then, when the calculated required stop distance Ln is greater than “the first position Lr to the current position of the vehicle (after moving from the roadside device 400) and the stop point”, the presence of the stop point is present. The first notification information for notifying is output.

And the control part 25 produces | generates the output command of the 1st alerting | reporting information which alert | reports presence of a stop point, and sends this to the output device 600. FIG. The content and presentation mode of the first notification information related to the output are defined in advance and are stored in the control unit 25 or the output device 600.

The output device 600 includes a speaker 601 and a display 602, and outputs first notification information to the driver by voice and / or images according to the output command. As described above, when it is determined that the necessary stop distance necessary for the vehicle to stop safely cannot be secured, the control unit 25 starts outputting the first notification information that notifies the presence of the stop line.

In addition, the control unit 25 receives vehicle information related to deceleration operation for the purpose of deceleration, such as downshift information, brake operation information, accelerator operation information, and the like from the vehicle within a predetermined time after the output of the first notification information is started. If it is not acquired, the first notification information is output by increasing the intensity of the output.

If the vehicle information related to the deceleration operation is not acquired even though the first notification information related to the stop point is output, the driver can increase the output intensity of the first notification information that prompts a temporary stop to output the driver. Can be forced to recognize the stop point.

Further, the control unit 25 does not perform the deceleration operation within the predetermined time thereafter, that is, shifts from the vehicle, even though the control unit 25 increases the output intensity and outputs the first notification information. When the vehicle information related to the deceleration operation for the purpose of deceleration, such as down information, brake operation information, accelerator operation information, is not acquired, the first notification information is continuously output.

If the vehicle information related to the deceleration operation is not acquired even though the first notification information related to the stop point is output with high strength, the time for outputting the first notification information that prompts the temporary stop is extended, and continuously By outputting, the driver can be forced to recognize the stop point.

Furthermore, the control part 25 of this embodiment continues the output of 1st alerting | reporting information again, when a vehicle is located in the upstream (current position R side of 1st distance) of a stop point.

On the other hand, when the vehicle is located downstream of the stop point (on the side opposite to the current position R of the first distance), the control unit 25 of the present embodiment ends the output of the first notification information, and the 2 Start outputting broadcast information.

The position of the vehicle can be obtained based on the elapsed time after passing through the roadside device 400 and the vehicle speed acquired from the vehicle controller 200. The predetermined area on the upstream side and the predetermined area on the downstream side of the stop point are set in advance, and are defined based on the distance from the stop point (the distance along the road extending direction).

If the vehicle information related to the deceleration operation is not acquired even though the first notification information related to the stop point is output, the driver determines that the vehicle is not intentionally paused. In such a scene, the control unit 25 of the present embodiment determines whether or not the vehicle has passed the stop point, and when the vehicle is located upstream of the stop point (the current position R side of the first distance). Continues the output of the first notification information (including re-output and continuation by strong output). On the other hand, when the vehicle is located downstream of the stop point (opposite the current position R of the first distance), the control unit 25 of the present embodiment ends the output of the first notification information and presents it next. The output of the 2nd alerting | reporting information regarding a power intersection is started.

According to such a process, before exceeding a stop line or a stop point, the 1st alerting | reporting information regarding the stop point to pass from now on is output, and after exceeding a stop point, the 2nd alerting | reporting information regarding the next intersection is output. Can be output. By doing in this way, information of appropriate contents can be presented at an appropriate timing. Note that if the information about the target continues to be presented even after the target for which attention is urged is exceeded, the degree of attention to the next target may decrease, but in this embodiment, such a situation can be prevented.

Furthermore, control of the presentation mode of the second notification information will be described.

The manner of presenting the second notification information is controlled according to the length of the third distance. That is, the control unit 25 starts the output of the first notification information, and then, according to the calculated length of the third distance, the second related to the merge point located downstream of the stop point related to the first notification information. Controls how the notification information is presented.

Furthermore, the control unit 25 of the present embodiment causes the second notification information to be output so that the output duration time becomes longer as the length of the third distance W is longer and / or the driver is longer as the length of the third distance is longer. The second notification information is output with the intensity of the output increased so that the recognition degree becomes higher. Here, increasing the intensity of output is performed by increasing the volume, including a warning sound, increasing the tone (instruction form), repeating the output, or blinking the presented image. In addition, the content of the 2nd alerting | reporting information which concerns on an output, and a presentation aspect are defined previously, and are memorize | stored in the control part 25 or the output device 600. FIG.

As shown in FIG. 3, when the third distance W is long, it can be estimated that the width of the road joining at the intersection is wide or the distance from the stop point to the intersection center is long. The longer the width of the road after merging, or the longer the distance from the stop line to the intersection center, the longer the time required to make a right or left turn at the intersection. The control unit 25 of the present embodiment presents the second notification information regarding the intersection according to the value of the third distance W. According to this control method, the second notification information can be presented according to the time for which the driver turns the intersection. Thereby, since 2nd alerting | reporting information can be shown by appropriate presentation time, a driver | operator's attention is not reduced.

In addition, when the third distance W is long and the width of the road that merges at the intersection is wide, the traffic volume is generally large, so the driver is required to have a high degree of attention. According to the present embodiment, the second notification information can be presented in a scene where a high degree of attention is required of the driver. Thereby, since 2nd alerting | reporting information can be shown according to a driving | running condition, a driver | operator's attention is not reduced.

On the other hand, the control unit 25 outputs the second notification information so that the output continuation time becomes shorter as the length of the third distance W is shorter, and the degree of recognition of the driver is lower as the length of the third distance W is shorter. It is preferable to decrease the intensity of the output so that the second notification information is output.

When the third distance W is short, it can be estimated that the width of the road that merges at the intersection is narrow or the distance from the stop point to the intersection is short. The narrower the width of the road after merging, or the shorter the distance from the stop point to the intersection, the shorter the time required to turn left and right at the intersection. The control unit 25 of the present embodiment presents second notification information regarding the intersection according to the time required for turning at the intersection. That is, the second notification information can be presented according to the time for which the driver turns the intersection. Thereby, since 2nd alerting | reporting information can be shown by appropriate presentation time, a driver | operator's attention is not reduced.

In addition, when the third distance W is short and the width of the road that merges at the intersection is narrow, the traffic volume is relatively small, so the driver is not required to be highly careful (in comparison).

According to this embodiment, 2nd alerting | reporting information can be shown with the time and / or output intensity according to the attention degree requested | required of a driver | operator. Thereby, since 2nd alerting | reporting information can be shown according to a driving | running condition, a driver | operator's attention is not reduced.

The control unit 25 generates a command for executing the above-described presentation control and sends it to the output device 600. The output device 600 presents the first notification information and the second notification information in a predetermined manner according to the received presentation control command.

  Next, a control procedure of the information processing system 100 according to the present embodiment will be described with reference to FIGS. FIG. 4 is a flowchart for explaining the control procedure of the first notification information presentation processing, FIG. 5 is a flowchart for explaining the control procedure of the first notification information and second notification information presentation processing, and FIG. It is a flowchart for demonstrating the control procedure of the presentation process of 2nd alerting | reporting information.

7 and 8 are diagrams for explaining a scene in which the first notification information is presented, FIG. 9 is a diagram for explaining a scene in which an alarm of the first notification information is output, and FIG. 10 is a first notification information. FIG. 11 is a diagram for explaining a scene in which the first notification information is presented when the vehicle is located upstream of the stop line, and FIG. 12 is a diagram for explaining the scene in which the vehicle is stopped. It is a figure for demonstrating the scene which shows 2nd alerting | reporting information, when located in the downstream.

In addition, FIG. 13 shows a presentation mode of the second notification information when the third distance is (relatively) long, and FIG. 14 shows a presentation mode of the second notification information when the third distance is (relatively) short. FIG.

First, based on FIG. 4, the control procedure of the presentation process of 1st alerting | reporting information is demonstrated.

The information providing system 100 mounted on the vehicle starts exchanging information with the roadside device 400 at a point in the communication area with the roadside device 400 (corresponding to the first point, the current position, or the reference point). By sending and receiving this information, the in-vehicle information providing system 100 functions as a terminal of an ITS (Intelligent Transport Systems) including the roadside device 400 and can receive information managed by the ITS.

In step S100, the vehicle on which the information providing system 100 is mounted starts this processing as the communication with the roadside device 400 starts.

  In step S101, the information acquisition unit 10 acquires road information regarding the installation position of the roadside device 400 and the attribute of the road spot from the roadside device 400 (S101).

  In subsequent step S102, the first distance calculation unit 21 calculates the current position of the vehicle using the acquired installation position of the roadside device 400 when communicating with the roadside device 100 in step S101 (S102). Further, in step S102, the first distance calculation unit 21 determines the distance from the vehicle to the stop point based on the current position of the vehicle and the position of the stop point of the vehicle on the road acquired from the roadside device 400. The first distance L is obtained by calculation. The calculated first distance is L shown in FIG.

  Next, in Step S <b> 103, the first distance calculation unit 21 calculates “a distance Lp that the vehicle has traveled for a predetermined time from the installation position P of the optical beacon 411 of the roadside device 400”. This distance Lp is used when the information presentation mode is controlled in consideration of the distance the host vehicle has already moved (S103).

  Furthermore, in step S104, the first distance calculation unit 21 calculates a distance Lr from the current position to the stop line (stop point). Specifically, the first distance calculation unit 21 determines from the “distance Q from the installation position P of the optical beacon 411 of the roadside device 400 to the stop position S on the temporary stop line” to “the installation position P of the optical beacon 411 of the roadside device 400. The distance obtained by subtracting “distance Lp traveled for a predetermined time from” is calculated as “the first distance Lr to the current position of the vehicle and the stop point” (S104).

  On the other hand, in step S105 following step S102, the control unit 25 acquires the vehicle speed Vnow of the current vehicle every 100 msec from the vehicle controller 200.

  Further, in step S106, the control unit 25 calculates the necessary stop distance Ln necessary for the stop based on the vehicle speed Vnow acquired in S105 on the assumption that the stop is safe (S106).

  Specifically, the cumulative distance after passing through the roadside device 400 is calculated based on the vehicle speed every 100 msec. The timing of passing through the roadside device 400 is the time when distribution data from the roadside device 400 is received. The point in time when the distribution data is received is theoretically a 0 m point directly below the roadside device 400, and the distance is calculated at 100 msec from this point. With this process, the distance required for the vehicle to stop safely at the present time can be obtained.

  In step S107, the control unit 25 compares the required stop distance Ln calculated in step S106 with the first distance Lr calculated in step S104. In step S107, if the required stop distance Ln is greater than or equal to the first distance Lr, the process proceeds to step S108.

  On the other hand, when the required stop distance Ln is shorter than the distance Lr, the process returns to step S100. Based on the determination in step S107, it is possible to determine whether or not the host vehicle can stop at the stop line by a safe deceleration.

  When the required stop distance Ln required to stop at the stop line exceeds the remaining first distance Lr up to the stop line, the speed is relatively high, and is “necessary for stop” beyond the “remaining distance Lr up to the stop line”. "Distance Ln" means that a distance is required. On the other hand, when the required stop distance Ln required for the stop line is less than the remaining distance Lr to the stop line, the speed is low and the “distance Ln required for the stop line” is within the “remaining distance Lr to the stop line”. It means a case that fits well.

  For example, the required stop distance Ln required for stopping when the distance from the roadside device 400 to the stop line is 100 m and the current speed Vnow is 40 km / h can be calculated by the following equation.

Ln = Vnow × (Tp + Td ) + Vnow 2/2 × D
Set each parameter as follows.

Tp: Onboard processing time: 3 seconds
Td: Driver reaction time: 3 seconds
D: Deceleration: 0.3G
According to the above conditions, the required stop distance Ln is 87.7 m.

  On the other hand, for the remaining distance Lr to the stop line (stop point), if the passing time from directly below the roadside device 400 is 3 seconds, the passing distance Lp (Vnow × passing time) from directly below the roadside device 400 is expressed as “roadside device”. It can be calculated by subtracting from the distance Ln from 400 to the stop line (stop point), and is 100 m− (40 km / h × 3 seconds) = 66.7 m.

  Therefore, the required stop distance 87.7m required for stopping exceeds the remaining distance Lr (first distance) = 66.7m to the stop line, and in this state, it is impossible to stop safely on the stop line. .

  In subsequent step S108, the control unit 25 determines whether or not vehicle information related to the deceleration operation for the purpose of deceleration, such as downshift information, brake operation information, accelerator operation information, or the like, has been acquired. If the vehicle information related to the deceleration operation is acquired, the process returns to step S100, and if the vehicle information related to the deceleration operation is not acquired, the process proceeds to step S109.

  By this process, it is determined whether or not the driver intends to stop the vehicle toward the stop point. The reason why the driver outputs the caution information about the stop point even though the driver is driving to stop is to make the driver feel bothered. Furthermore, it is possible to prevent the driver's attention from being reduced by presenting unnecessary information.

  In step S109, the control unit 25 starts outputting the first notification information. Specifically, the control unit 25 generates a command for causing the output device 600 to output the first notification information, and sends the command to the output device 600. The speaker 601 that has received the output command outputs a text such as “Pause” or “Decelerate” or a warning sound such as “beep”. Further, the display 602 that has received the output command outputs text such as “pause” or “attention!”, And an image such as an icon representing a traffic sign indicating a pause.

  As described above, the control unit 25 determines in step S107 that the vehicle cannot be stopped with sufficient margin in the state where the vehicle remains as it is, and in step S108, the driver performs a brake operation or an accelerator release operation. If it is determined that the driver does not intend to decelerate, the first notification information for alerting the driver to the stop line is presented.

The scene which shows 1st alerting | reporting information is shown in FIG. FIG. 7 is a diagram illustrating a scene in which the first notification information is presented based on the first distance Lr between the current position and the stop point after traveling for a predetermined time (after traveling the distance Lp) and the required stop distance Ln. It is.

In this process, the control unit 25 presents the first notification information based on the first distance Lr to the stop point in consideration of the current position of the vehicle when traveling for a predetermined time after passing through the roadside device 400. The first notification information is presented based on the first distance L from the current position of the vehicle to the stop point when the vehicle passes the road device 400 (that is, the distance from the road device 400 to the stop point). It may be determined whether or not to do so. FIG. 8 shows a scene in which the first notification information is presented in this process. FIG. 8 is a diagram illustrating a scene in which the first notification information is presented based on the first distance Lr between the current position and the stop point when passing through the roadside device 400 and the required stop distance Ln.

Next, a presentation control method for the first notification information and the second notification information will be described based on the flowchart of FIG. This process is executed following step S109 of the flowchart shown in FIG.

After the first notification information related to the stop point is provided in step S109, in step 111, it is determined whether it is necessary to output an alarm regarding the first notification information with increased output intensity. Specifically, the control unit 25 performs a deceleration operation for the purpose of deceleration from the vehicle, such as downshift information, brake operation information, accelerator release operation information, within a predetermined time after starting the output of the first notification information. It is determined whether such vehicle information has been acquired. If the vehicle information related to the deceleration operation is not acquired within a predetermined time after the output of the first notification information is started, the process proceeds to step S112.

In step S112, the control unit 25 increases the intensity of the output and outputs an alarm for the first notification information. By the processing of step S111 and step S112, the presentation mode related to the output intensity (the degree of recognition of the driver) of the first notification information can be made appropriate according to the driving situation. That is, although the first notification information is presented, the first notification information is presented to the driver who does not perform the deceleration operation while increasing the output intensity.

The scene which outputs the alert | report of 1st alerting | reporting information is shown in FIG. As shown in FIG. 9, after presenting the first notification information as shown in FIGS. 7 and 8, if the deceleration operation is not performed, a warning sound is included or the volume is increased so that the degree of driver recognition is increased. Is increased or repeated to output an alarm of the first notification information.

On the other hand, if the vehicle information related to the deceleration operation is acquired within a predetermined time after the output of the first notification information is started, the driver proceeds to step S114 because the driver is decelerating toward the stop point. Thus, the presentation of the first notification information is terminated.

Furthermore, in step S113, the control unit 25 determines whether or not to continue outputting the first notification information. Specifically, the control unit 25 increases the output intensity in step S112 and outputs a warning of the first notification information within a predetermined time after the vehicle has received downshift information, brake operation information, accelerator release operation information, and the like. It is determined whether vehicle information relating to a deceleration operation for the purpose of deceleration is acquired. If the vehicle information related to the deceleration operation is not acquired within a predetermined time after the warning of the first notification information is output, it is determined that the presentation of the first notification information needs to be continued, and the process proceeds to step S115. Then, the first notification information is continuously presented until the next presentation command is generated / output.

A scene in which the output of the first notification information is continued is shown in FIG.

On the other hand, if the vehicle information related to the deceleration operation is acquired within a predetermined time after the output of the alarm of the first notification information is started, the driver is decelerating toward the stop point. Proceeding to S114, the presentation of the first notification information is terminated.

In step S115, the control unit 25 continues to present the first notification information. Thus, when the driver who did not step on the brake when the alarm of the first notification information was output, the driver who stepped on the accelerator released the accelerator by releasing the foot from the accelerator. If the driver who has not stepped on the brake does not step on the brake and the driver who has stepped on the accelerator continues to step on the accelerator, 1 Continue presenting notification information.

In step S116, the control unit 25 determines whether to output the first notification information again, that is, whether to re-present. Specifically, the control unit 25 determines whether or not the vehicle is located within a predetermined distance range upstream of the stop point. When the vehicle is located within a predetermined distance range upstream of the stop point, the process proceeds to step S117, and the first notification information is presented again. This re-presentation is presented at a higher output intensity so that the degree of recognition of the driver is higher than in the first presentation of the first notification information. FIG. 11 shows a scene where the first broadcast information is re-presented.

For example, the voice guide is sounded and the screen is re-presented based on the re-presentation rule defined in advance. Specifically, the remaining distance from the host vehicle to the stop line and the current speed are applied to the following equation to calculate the necessary deceleration. When the required deceleration is 0.5 G or more, it is presented in the first mode with a relatively high output intensity, and when the required deceleration is less than 0.5 G, it is presented in the second mode with a relatively low output intensity.

Necessary deceleration = Vnow ^2/2 (remaining distance -Vnow to the stop line (Tp + Td))
When the required deceleration is 0.5G or more, a warning text such as “Pause!” Is output with a warning sound, and this is repeated. On the other hand, if the required deceleration is less than 0.5G, the warning sound that is lower than the warning sound (the volume is low) and the warning sound that prompts the user to decelerate will be uttered along with the warning sound that is “pause. Output.

On the other hand, if the vehicle is not located within the predetermined distance range upstream of the stop point in step S116, the process proceeds to step S118.

Subsequently, in step S118, the control unit 25 outputs the second notification information related to the meeting point located downstream of the stop point related to the first notification information, instead of the first notification information, that is, the head (head) Judgment on whether or not to present information about the intersection such as attention to be taken out. Specifically, the control unit 25 determines whether or not the vehicle is located in a predetermined distance range downstream of the stop point. When the vehicle is located within a predetermined distance range downstream of the stop point, the process proceeds to step S120, and the second notification information is presented. On the other hand, when the vehicle is not located within the predetermined distance range downstream of the stop point, the process proceeds to step S119, and the presently presented information is continuously presented. The scene which outputs the warning of 2nd alerting | reporting information is shown in FIG.

Next, the second notification information presentation process will be described. FIG. 6 is a flowchart showing the second notification information presentation process.

As shown in FIG. 6, when the presentation of the second notification information is started in step S119, the second distance and the third distance are calculated in the subsequent step S120.

Specifically, the second distance calculation unit 22 calculates the second distance from the roadside device 400 to the intersection existing in the traveling direction of the vehicle based on the installation position 432 of the roadside device 400 and the road information 431. Similarly, in step 120, the third distance calculating unit 23 calculates the third distance W from the stop point to the intersection from the first distance L calculated in step S104 of FIG. 4 and the previously calculated second distance Q. (See FIG. 3).

The length of the third distance W calculated in this process can be treated as a measure of the time required to turn at a junction such as an intersection existing downstream after passing the stop point. For this reason, the length of the presentation time of 2nd alerting | reporting information is controllable according to this 3rd distance.

When the second distance and the third distance are calculated, the control unit 25 stops presenting the first notification information in step S121 in order to present the second notification information.

In step S122, the control unit 25 increases the output duration time as the length of the third distance is longer, and outputs the second notification information regarding the next intersection. The relationship between the length of the third distance and the output duration time is preferably defined in advance. Moreover, the control part 25 raises the intensity | strength of an output and outputs the 2nd alerting | reporting information regarding the next intersection so that a driver | operator's recognition level may become so high that the length of 3rd distance is long. The relationship between the third distance and the output intensity such as volume is preferably defined in advance. The second notification information includes alerting about cueing at the time of joining, alerting to other vehicles joining at the intersection, presence of other vehicles joining at the intersection, and the like. The presentation mode of the second notification information when the third distance is long is shown in FIG.

On the other hand, the control unit 25 shortens the output duration as the length of the third distance is shorter, and outputs the second notification information regarding the next intersection, and the degree of recognition of the driver as the length of the third distance is shorter. The second notification information relating to the next intersection is output by reducing the intensity of the output so as to decrease. The presentation mode of the second notification information when the third distance is long is shown in FIG.

  Since this embodiment is configured and operates as described above, the following effects can be obtained.

  According to the information providing system 100 of the present embodiment, the first distance, the second distance, the third distance, and the vehicle side calculated from the road information regarding the acquired installation position of the roadside device 400 and the attribute of the road spot are obtained. In order to control the presentation mode of information provided to the driver of the vehicle based on the vehicle information acquired from Since the driver's attention in the vicinity of the intersection can be alerted after exceeding the stop line, the reliability of the information can be improved.

  By the way, when information is provided for driving assistance, the driver who is a user does not always feel satisfied, and may feel annoyed depending on the presentation mode of the information. For example, the driver feels annoyed when information is provided and the driver follows the information, but the information is presented on the navigation guidance screen longer than necessary. In addition, if the same information continues to be presented for an unnecessarily long time, such as when presenting information on a point that has passed even though it has passed that point, there will be a discrepancy between the information and the actual situation. The reliability of information decreases. On the other hand, if the information presentation time is short, the information is not transmitted to the driver, and the significance of providing the information becomes low. That is, if the driver feels annoying when providing information, the reliability of the driver with respect to the provided information tends to decrease.

  On the other hand, this invention can show information, without making a driver | operator feel troublesome by controlling the presentation aspect containing the presentation time of information, and can raise the reliability of the driver | operator with respect to information.

  In particular, in order to control the presentation mode of information provided to the driver of the vehicle based on the vehicle information, the first distance, the second distance, and the third distance, the position of each point and the current position of the vehicle And information of appropriate contents can be presented at an appropriate timing according to the vehicle behavior.

Moreover, according to this embodiment, the output of the 1st alerting | reporting information which alert | reports presence of a stop point when the required stop distance Ln required until the vehicle calculated | required based on vehicle information is more than the 1st distance L is output. Therefore, it is possible to present information determined to be necessary according to the state of the traveling vehicle.

Moreover, this embodiment controls the presentation mode of the 2nd alerting | reporting information regarding the junction (intersection) located in the downstream of a stop point according to the length of 3rd distance after the output of 1st alerting | reporting information is started. For this reason, since the presentation mode of the 2nd information information can be changed based on the 3rd distance used as the index of time to pass (turn) at a junction, information is shown according to the situation of vehicles passing an intersection. Can be presented.

In particular, the longer the third distance is, the longer the output duration time is output and the second notification information is output, so that the second notification information is output continuously for a long time when the turn time is long. Therefore, at any intersection, the second notification information regarding the intersection can be presented while the vehicle passes through the intersection.

  In addition, when detecting the timing at which the vehicle starts to pass through the intersection (starts turning) and the timing at which the vehicle passes through the intersection (turning is completed) by detecting the steering angle, the vehicle actually starts passing through the intersection or If it is not completed, it cannot be detected. On the other hand, in this embodiment, based on the third distance calculated from the first distance and the second distance, the time for passing through the intersection can be predicted without actually passing through the intersection. In addition, based on the position of the stop point and the third distance, it is possible to predict the passage start timing and the passage completion timing of the intersection.

  Further, by increasing the output intensity so that the driver's recognition level increases as the third distance length increases, the second notification information is output, thereby increasing the output intensity when the width of the road to be merged is large. Since the second notification information can be output, information can be presented according to the situation of the vehicle passing through the intersection. At any of the intersections, the second notification information can be output with an output intensity (a large volume and a large number of repetitions) according to the width of the road to be joined. That is, when the width of the road to be joined is large and a high degree of attention is required, the second notification information can be output with high output intensity. For this reason, 2nd alerting | reporting information can be output in the aspect according to the driving | running | working condition.

  Further, within a predetermined time after the output of the first notification information is started, vehicle down information, brake operation information, accelerator release operation information, and other vehicle information related to a deceleration operation for deceleration are not acquired from the vehicle. In this case, since the first notification information is output by increasing the intensity of the output, the necessity of the first notification information to call attention is determined from the vehicle information, and frequent information presentation to the driver can be prevented. . For this reason, it is possible to prevent the driver from feeling that the presented information is annoying and to increase the reliability of the driver with respect to the information.

  In addition, a driver who does not perform a deceleration operation can be prompted to perform a deceleration operation such as a brake operation by an alarm. Moreover, after alerting | reporting by presentation of 1st alerting | reporting information, a driver | operator can be made to understand the content of a warning in a short time by further providing a warning.

  In addition, when the vehicle information related to the deceleration operation is not acquired even though the first notification information related to the stop point is output, it is determined that the driver is not intentional and does not stop unintentionally (inadvertently). To do. In this embodiment, in such a situation, the driver can be forced to recognize the stop line by increasing the output intensity of the first notification information that prompts the temporary stop. Even if the output intensity is increased, the information that the driver has overlooked unconsciously tends not to be annoying by the driver, so even if it is presented relatively strongly, the driver does not feel uncomfortable, Information can be presented in an easily acceptable manner.

  Furthermore, when the vehicle information related to the deceleration operation described above is not acquired, the necessity of the first notification information for calling attention is determined from the vehicle information by continuously outputting the first notification information, and the driver It is possible to prevent frequent information presentation to For this reason, it is possible to prevent the driver from feeling that the information presented is troublesome and to increase the reliability of the driver with respect to the information. In addition to this, the same effect as when the first notification information is output by increasing the output intensity is obtained.

  Moreover, in this embodiment, when the vehicle information which concerns on the deceleration operation mentioned above is acquired, it determines that the driver | operator has recognized the stop point and stops presentation of 1st alerting | reporting information. Thereby, when it is not necessary to continue the presentation, the presentation of the first notification information being presented is stopped, so that it is possible to prevent the driver from feeling that the presented information is troublesome, and the reliability of the driver with respect to the information Can be increased.

  Further, in the present embodiment, when the vehicle is located within a predetermined distance range upstream of the stop point, the first notification information is output again. Therefore, when the vehicle exists before passing the stop point (upstream side), the stop point Since the 1st alerting | reporting information which concerns on is shown, the information of the content according to the condition can be shown.

  Further, in the present embodiment, when the vehicle is located in a predetermined distance range downstream of the stop point, the output is switched from the first notification information to the second notification information, so that it is presented after passing the stop point (downstream side). Since the information is switched to the second notification information related to the intersection that passes next, the information according to the situation can be presented.

Further, the required presentation distance calculated for determining whether or not to present the first notification information is Ln = Vnow × (Tp + Td) + (Vnow) ² / 2D (where “Vnow” is the current vehicle speed, “Tp "" Is a predefined vehicle-mounted device processing time, "Td" is a predefined driver reaction time, and "D" is a preset deceleration.) Whether the vehicle can be safely stopped at the stop point) can be determined with high accuracy.

  As described above, according to the present embodiment, information can be presented in a manner according to the driving behavior and the driving situation, so that the reliability of the driver with respect to the information to be provided can be improved.

  The embodiment described above is described for facilitating the understanding of the present invention, and is not described for limiting the present invention. Therefore, each element disclosed in the above embodiment is intended to include all design changes and equivalents belonging to the technical scope of the present invention.

  In other words, in this specification, as an aspect of the information providing apparatus according to the present invention, an in-vehicle apparatus 1000 including the information providing system 100, the vehicle controller 200, the in-vehicle sensor 300, the navigation apparatus 500, and the output apparatus 600 is taken as an example. However, the present invention is not limited to this.

In this specification, an information providing system 100 including an information acquisition unit 10 as an example of an information acquisition unit and a presentation control unit 20 as an example of a presentation control unit will be described as an aspect of the information provision device. It is not limited to.

Further, in the present specification, the first distance calculating unit 21 calculates the first distance, the second distance, and the third distance and controls the presentation mode of information based on these and vehicle information. The presentation control unit 20 including the second distance calculation unit 22, the third distance calculation unit 23, the vehicle information acquisition unit 24, and the control unit 25 will be described, but is not limited thereto.

Moreover, although this specification demonstrates the roadside apparatus 400 provided with the communication apparatus 410, the determination unit 420, the database 430, and the mobile body sensor 440 as one aspect | mode of a roadside apparatus, it is not limited to this. Absent.

It is a figure which shows the general outline | summary of the vehicle-mounted apparatus 1000 containing the information provision system 100, and the roadside apparatus 400 installed in the predetermined position on a road. 1 is a block configuration diagram of an in-vehicle device 1000 including a roadside device 400 and an information providing system 100. FIG. It is a figure which shows the relationship between the calculated 1st distance, 2nd distance, and 3rd distance, the present position of a vehicle, the installation position of the roadside apparatus 400, the position of an intersection, and the position of a stop line. It is a flowchart figure for demonstrating the control procedure of the presentation process of 1st alerting | reporting information. It is a flowchart for demonstrating the control procedure of the presentation process of 1st alerting | reporting information and 2nd alerting | reporting information. It is a flowchart for demonstrating the control procedure of the presentation process of 2nd alerting | reporting information. It is a figure for demonstrating the scene which shows 1st alerting | reporting information based on the distance Lr of the present position after driving | running | working predetermined time, and the stop point, and the required stop distance Ln. It is a figure for demonstrating the scene which presents 1st alerting | reporting information based on the distance Lr of the present position at the time of passing the roadside apparatus 400, and a stop point, and the required stop distance Ln. It is a figure for demonstrating the scene which outputs the warning regarding a stop point after presentation of 1st alerting | reporting information. It is a figure for demonstrating the scene which continues presentation of 1st alerting | reporting information according to vehicle information. It is a 1st figure for demonstrating the scene which presents 1st alerting | reporting information or 2nd alerting | reporting information according to the relationship between the position of a vehicle, and a stop point. It is a 2nd figure for demonstrating the scene which presents 1st alerting | reporting information or 2nd alerting | reporting information according to the relationship between the position of a vehicle, and a stop point. It is a 1st figure for demonstrating the control which changes the presentation aspect of 2nd alerting | reporting information according to the length of 3rd distance. It is a 2nd figure for demonstrating the control which changes the presentation aspect of 2nd alerting | reporting information according to the length of 3rd distance.

Explanation of symbols

1000 ... In-vehicle device
DESCRIPTION OF SYMBOLS 100 ... Information provision system 10 ... Information acquisition part 20 ... Presentation control part 21 ... 1st distance calculation part 22 ... 2nd distance calculation part 23 ... 3rd distance calculation part 24 ... Vehicle information acquisition part 25 ... Control part 200 ... Vehicle controller DESCRIPTION OF SYMBOLS 300 ... Vehicle-mounted sensor 301 ... Vehicle speed sensor 302 ... Brake sensor 303 ... Accelerator sensor 304 ... Shift position sensor 305 ... Steering angle sensor 400 ... Roadside device 410 ... Communication apparatus 411 ... Optical beacon 412 ... Wireless communication function 420 ... Judgment unit 430 ... Database 431 ... Road information 433 ... Communication zone information 440 ... Moving body sensor 500 ... Navigation device 600 ... Output device 601 ... Speaker 602 ... Display

Claims (10)

An information providing apparatus equipped with a function of performing transmission / reception of information with a roadside device installed in a vehicle and installed at a predetermined position on a road,
Information acquisition means for acquiring road information related to the attribute of the location of the roadside device and the location of the road from the roadside device;
A first distance from the vehicle to the stop point is calculated based on a current position of the vehicle calculated using the acquired installation position of the roadside device and a position of a stop point of the vehicle on the road defined in advance. Calculate
Based on the acquired installation position of the roadside device and road information, a second distance from the roadside device to an intersection existing in the traveling direction of the vehicle is calculated,
Calculating a third distance from the stop point to the intersection obtained from the first distance and the second distance;
Presentation control means for controlling a presentation mode of information to be provided to the driver of the vehicle based on vehicle information acquired from the vehicle side, a first distance, a second distance, and a third distance; Information providing device. The information providing apparatus according to claim 1,
The presentation control means compares the required stop distance required for the vehicle to stop based on the vehicle information with the first distance, and stops when the required stop distance is equal to or greater than the first distance. Start outputting the first notification information for notifying the presence of the point,
After starting the output of the first notification information, the presentation of the second notification information related to the merging point located downstream of the stop point related to the first notification information according to the calculated length of the third distance An information providing apparatus for controlling an aspect. In the information provision apparatus of Claim 2,
The presentation control unit is an information providing apparatus that outputs the second notification information by increasing the output duration as the third distance is longer. In the information provision apparatus as described in any one of Claims 1-3,
The information providing apparatus, wherein the presentation control means increases the output intensity so that the driver's recognition degree increases as the third distance is longer, and outputs the second notification information. In the information provision apparatus as described in any one of Claims 2-4,
The presentation control means includes vehicle information related to a deceleration operation for the purpose of deceleration from the vehicle, such as downshift information, brake operation information, accelerator operation information, within a predetermined time after starting the output of the first notification information. Is not acquired, the information providing apparatus that increases the intensity of output and outputs the first notification information. In the information provision apparatus of Claim 5,
The presentation control means aims to decelerate downshift information, brake operation information, accelerator operation information, and the like from the vehicle within a predetermined time after increasing the intensity of the output and outputting the first notification information. The information provision apparatus which outputs the said 1st alerting | reporting information continuously, when the vehicle information which concerns on deceleration operation is not acquired. In the information provision apparatus of Claim 5,
The presentation control means aims to decelerate downshift information, brake operation information, accelerator operation information, and the like from the vehicle within a predetermined time after increasing the intensity of the output and outputting the first notification information. An information providing apparatus that stops presenting the first notification information when vehicle information related to a deceleration operation is acquired. In the information provision apparatus of Claim 5 or 6,
The first notification information is output again when the vehicle is located within a predetermined distance range upstream of the stop point, and the first notification information when the vehicle is located within a predetermined distance range downstream of the stop point. The information providing apparatus that terminates the output and starts the output of the second broadcast information. In the information provision apparatus as described in any one of Claims 2-8,
The presentation control unit is an information providing apparatus that calculates the required stop distance by the following equation (1).
Ln = Vnow × (Tp + Td) + (Vnow) ² / 2D (1)
However, “Vnow” is the current vehicle speed, “Tp” is a predefined vehicle equipment processing time, “Td” is a predefined driver reaction time, and “D” is a predefined deceleration. When communicating with the roadside device, it is included in the road information relating to the current position of the vehicle calculated from the installation position acquired from the roadside device and the attribute of the road point acquired from the roadside device, in advance. Calculating a first distance from the vehicle to the stop point based on the defined location of the vehicle stop point on the road;
Based on the acquired installation position of the roadside device and road information, a second distance from the roadside device to an intersection existing in the traveling direction of the vehicle is calculated,
Calculating a third distance from the stop point to the intersection determined from the first distance and the second distance;
An information providing method for controlling a presentation mode of information to be provided to a driver of the vehicle based on vehicle information acquired from the vehicle, a first distance, a second distance, and a third distance.

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