JP2012073181A - Driving support device - Google Patents

Abstract

A warning mark indicating caution information displayed on a monitor of a car navigation device can be acquired as useful information by a driver.
When displaying a warning mark M indicating a position where a near-miss occurred on a map of a monitor, the season and time zone through which the vehicle I passes are different from the season and time zone where a near-miss occurred (S13, S14) The warning mark M is not displayed.
[Selection] Figure 3

Description

  The present invention relates to a driving support apparatus that displays a warning mark indicating a position where attention information is generated on map information on a monitor.

  In recent years, car navigation devices using GPS (Global Positioning System) have been widely used. In this type of car navigation device, the current position is calculated based on signals from a plurality of artificial satellites received by a GPS antenna, and map data around the current position stored in the storage means is developed and displayed on a monitor. Like to do.

  Further, as disclosed in, for example, Patent Document 1 (Japanese Patent Application Laid-Open No. 2007-115079), a warning mark indicating caution information to call attention when driving a vehicle is displayed on the map data displayed on the monitor. When a vehicle approaches or enters the area where the warning mark is displayed, a warning is issued to alert the driver, and even if an accident does not occur, the vehicle has entered a warning area called “near-miss” There is also known a driving support device that notifies the driver of this.

  Areas where this warning mark is displayed include, for example, intersections where collisions occur frequently, intersections where frequent accidents occur when turning left, locations where there are sharp curves, areas where road surfaces may freeze, etc. The area that needs to be alerted to the driver is included.

JP 2007-115079 A

  By the way, for example, when a warning mark is displayed on a road that may freeze the road surface, it cannot be useful information in summer. Similarly, even if warning signs are displayed at intersections where collision accidents occur frequently and intersections that frequently involve left turns, it is useful when passing traffic during extremely low traffic periods. It cannot be information.

  However, information on the roads that are likely to freeze and the roads on which snowdrift tends to occur is useful in winter.

  In addition, at intersections where collisions occur frequently and intersections that frequently involve left turns, it is possible to provide more useful information by displaying details such as time zones where accidents are likely to occur. .

  However, in the technique disclosed in the above-described document, a warning mark is always displayed at the position where the caution information is generated on the monitor. Therefore, it is necessary to check whether the driver is useful information one by one. There is an inconvenience that complicated work is required during driving. In addition, warning marks are displayed at all locations where caution information on the map displayed on the monitor has occurred, which interferes with the clear recognition of map information, and the display content of the monitor is messy. There is an inconvenience that you will receive an impression.

  In view of the above circumstances, the present invention provides a driving assistance device capable of displaying warning marks indicating useful information generation positions on map information displayed on a monitor of a car navigation device as useful information. With the goal.

  To achieve the above object, the present invention provides position information acquisition means for acquiring position information of the own vehicle, storage means for storing own vehicle position information when the own vehicle is suddenly stopped, as caution information, and the caution In a driving support device including a display driving unit that displays a generation position of information on a map of a monitor, the attention information stored in the storage unit stores a date and time when the attention information is generated, The display drive means, when the host vehicle passes the position of occurrence of the caution information stored in the storage means, the current season and time zone, the season and time set based on the date and time when the caution information occurred When it coincides with the time zone, a warning mark is displayed at the position where the attention information is generated on the map displayed on the monitor.

  According to the present invention, the warning mark indicating the position where the attention information is generated is displayed on the monitor when the season and time zone when the host vehicle passes are the same. A warning mark indicating the position where the attention information is generated can be acquired as useful information.

Schematic configuration diagram of vehicle system Flow chart showing a near miss position information storage processing routine Flow chart showing the near miss position information display processing routine Illustration of lighting colors corresponding to near-miss points Explanatory drawing of the warning mark displayed on the monitor of the car navigation system Explanatory drawing of the state which drive | works the area where the warning mark of FIG. 5 is displayed from a different direction Explanatory drawing of the state approaching from the same direction to the area where the warning mark of FIG. 5 is displayed

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. Various electronic control units (ECUs) are mounted on the vehicle. Each ECU is mainly composed of a well-known microcomputer having a CPU, ROM, RAM, input / output interface and the like (not shown).

  FIG. 1 shows an electronic control unit employed in this embodiment. Reference numeral 1 denotes a GPS positioning device (GPS_ECU) as position information acquisition means, which receives a signal from a GPS satellite (not shown) by an antenna 1a, calculates a current position of the host vehicle, and includes a position information signal including position information. Is generated.

  The pre-crash control device (Purikura_ECU) 2 always determines the risk that the vehicle will collide with a preceding vehicle or a three-dimensional obstacle ahead detected by a front recognition camera or millimeter wave radar (not shown). When the vehicle is detected, an operation signal is output to the brake actuator 3 to operate the brake, and the vehicle is urgently stopped.

  The vehicle control device (vehicle control_ECU) 4 checks whether or not the driver has suddenly stopped by performing a sudden braking operation based on a detection signal from the longitudinal acceleration (G) sensor 4a.

  In addition, the car navigation control device (car navigation_ECU) 5 having a function as display driving means uses the position of the own vehicle obtained by the GPS_ECU 1 and the position estimation by autonomous navigation in combination, and the road of the road map extracted from the map data. The current position is set by a map matching method that associates the vehicle position with the vehicle position. This map data is read from a road map database stored in the storage means 6 such as an HDD, CD, or DVD. Based on the display signal transmitted from the car navigation_ECU 5, a map, a vehicle position mark, a guidance route, and other various messages are displayed on the monitor 7. Further, based on the audio signal transmitted from the car navigation_ECU 5, a guidance guidance message or the like is output from the speaker 8 by voice. The ECUs 1, 2, 4, and 5 are connected to each other through an in-vehicle communication line 8 such as CAN (Controller Area Network) communication.

  Further, the car navigation_ECU 5 determines that a near-miss has occurred when the brake actuator 3 is operated by the photokura_ECU 2 to make an emergency stop, and when the driver's sudden brake operation is detected by the vehicle control_ECU 4, The position is stored, and a warning mark M indicating caution information is displayed on the map displayed on the monitor 7.

  The near-miss information (corresponding to attention information) storage process and the near-miss information display process executed by the car navigation_ECU 5 are specifically performed according to the flowcharts shown in FIGS.

  First, the near miss position information storage processing routine shown in FIG. 2 will be described. In this routine, it is determined whether or not a near-miss is detected in step S1 based on the signals from the above-described photobooth_ECU2 and vehicle control_ECU4. If a near-miss is detected, the process proceeds to step S2 and is not detected. If it does, exit the routine.

  In step S2, the GPS_ECU 1 reads the current position position coordinates calculated based on the GPS signal (and autonomous navigation) and the traveling direction of the host vehicle obtained based on the movement of the position coordinates. In step S3, the current date / time information is read.

  In step S4, position coordinate data indicating the occurrence position, traveling direction data, and date / time data are stored in the storage means 6 as near-miss information.

  Next, the process proceeds to step S5, where the storage means 6 is searched to check whether past near-miss position information is stored on the same coordinate data. If it is stored, the process proceeds to step S6, where The data point Pn is incremented (Pn ← Pn + 1), and the routine is exited. On the other hand, if there is no past near-miss position information, the process branches to step S7, the data point Pn of the coordinate is set to 1 (Pn ← 1), and the routine is exited.

  The near-miss information stored in the storage means 6 is read in the near-miss position information display processing routine shown in FIG.

  In this routine, first, in step S11, the near-miss position coordinate corresponding to the position coordinate of the map data transmitted and displayed from the car navigation_ECU 5 displayed on the monitor 7 is stored in the storage means 6. If it is not stored, the routine is exited. On the other hand, if the corresponding near-miss position information is stored, the process proceeds to step S12.

  If it progresses to step S12, the present date and time and the advancing direction of the own vehicle will be read, it will progress to step S13, and it will be investigated whether the near-miss information memorize | stored in the memory | storage means 6, and a season and a time zone correspond. The season is determined, for example, by dividing the year into four seasons of spring, summer, autumn and winter, and the corresponding month. The time zone is divided into, for example, early morning, daytime, and nighttime. If they match, the process proceeds to step S14. If they do not match, the routine is exited.

  If it progresses to step S14, it will be investigated whether the advancing direction of the own vehicle and the advancing direction of the vehicle at the time of near-miss occurrence memorize | stored in near-miss information correspond. If they match, the process proceeds to step S15. If they do not match, the routine is exited.

  In step S15, the data point Pn attached to the near hat information is read, and the process proceeds to step S16, where a warning mark M indicating attention information is displayed on the near hat position coordinates in a color corresponding to the data point Pn. In the present embodiment, the attention level of near-miss is set stepwise according to the occurrence frequency. That is, as shown in FIG. 4, when the data point Pn is less than the frequency n1 (for example, 2), since the frequency is low, the attention level is set to the lightest green. Further, when the data point Pn is equal to or higher than the frequency n1 and lower than the frequency n2 (for example, 4), the attention level is set to yellow to inform the driver that some attention should be paid. Furthermore, when the data point Pn is equal to or higher than the frequency n2 and lower than the frequency n3 (for example, 6), the attention level is set to red to notify the driver that the driver needs attention and needs slow driving. When the data point Pn is equal to or higher than the frequency n3, the warning level is set to the warning mark M blinking red to notify the driver that the slowest speed is necessary.

  Thereafter, the process proceeds to step S17 where it is checked whether or not there is a request for status information. If there is no request, the routine is directly exited. On the other hand, if there is a request, the process proceeds to step S18, the past situation information is displayed, and the routine is exited. The request for the situation information is automatically executed by the driver operating the switch of the car navigation device and selecting the situation display mode. Therefore, when the status display mode is not selected, it is determined that there is no request for status information.

  As a result of the above, for example, as shown in FIG. 5, when the own vehicle I tries to enter the priority road from the non-priority road, past near-miss information exists on the coordinates indicating the intersection position of the T-junction. If the traveling direction, season, and time match, a warning mark M is displayed at the intersection in a color corresponding to the data point Pn. Therefore, when the driver recognizes the lighting of the warning mark M, the driver can simultaneously recognize the danger level of the warning mark M by the display color. And if the own vehicle I passes the said intersection, since the advancing direction will differ, the warning mark M will not be displayed.

  On the other hand, as shown in FIG. 6, when the host vehicle I is traveling in the same area in different directions (running on the priority road in the figure), the traveling direction is different. M is not displayed. Furthermore, as shown in FIG. 7, when traveling on the non-priority road shown in FIG. A warning mark M is displayed at the intersection of the junction. At this time, for example, when the driver turns the vehicle I to the right as shown by the arrow in the figure before the intersection with the priority road, the warning mark M is not displayed because the traveling direction is different.

  If it is determined in step S17 that the situation information display is requested, the situation information display displayed in step S18 is, for example, in the vicinity of the part where the warning mark M is displayed in the past. The date, time, and traveling direction of all near misses on the position coordinates are displayed.

  Thus, according to the present embodiment, near-miss information is displayed for each season, for each time zone, and for each traveling direction, so that the vehicle travels in a different season, travels in a different time zone, or travels in the traveling direction. Are different from each other, the warning mark M indicating the caution information is not displayed. Therefore, the map information displayed on the monitor is not complicated, and the displayed warning mark M can be acquired as useful information. . Therefore, for example, near-miss information caused by a road that may freeze the road surface or snowdrift is not displayed except during the winter season, and the troublesomeness given to the driver can be reduced.

  The present invention is not limited to the above-described embodiment. For example, the attention level displayed with a warning mark may be displayed with the size of the warning mark.

1 ... GPS positioning device 5 ... car navigation device,
6 ... storage means,
7 ... Monitor,
I ... own vehicle,
M ... Warning mark

Claims (4)

Position information acquisition means for acquiring position information of the own vehicle;
Storage means for storing own vehicle position information as caution information when the own vehicle is suddenly stopped;
In a driving support device comprising display driving means for displaying the position where the attention information is generated on a map of a monitor,
The caution information stored in the storage means stores the date and time when the caution information occurred,
The display drive means, when the host vehicle passes the position of occurrence of the caution information stored in the storage means, the current season and time zone, the season and time set based on the date and time when the caution information occurred A driving support device, wherein when the time zone coincides, a warning mark is displayed at a position where the caution information is generated on the map displayed on the monitor. The direction of travel of the host vehicle is stored in the caution information stored in the storage unit, and the display driving unit is configured such that the direction of travel of the host vehicle is different from the direction of travel stored in the caution information. The driving support device according to claim 1, wherein the warning mark is not displayed on the monitor. The driving according to claim 1 or 2, wherein the display driving means displays the warning mark displayed on the monitor in a different color or size according to the frequency of occurrence of the caution information at the same position. Support device. The driving support apparatus according to any one of claims 1 to 3, wherein the display driving unit causes the monitor to display an occurrence date and time of the caution information when there is a request to display status information.

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