WO2007032169A1

WO2007032169A1 - Driving supporting apparatus, driving supporting method, driving supporting program, and recording medium

Info

Publication number: WO2007032169A1
Application number: PCT/JP2006/315933
Authority: WO
Inventors: Tsuyoshi Sato
Original assignee: Pioneer Corporation
Priority date: 2005-09-13
Filing date: 2006-08-11
Publication date: 2007-03-22

Abstract

A driving supporting apparatus (100) comprises a presenting section (101), an acquiring section (102), a calculating section (103), and a control section (104). The presenting section (101) presents information on the path along which a moving object moves. The acquiring section (102) acquires information on the moving state of the moving object. The calculating section (103) calculates the degree of experience of the driver driving the moving object about the path by using the acquired information on the moving state and calculates the degree of fatigue of the driver from the information on the moving state. The control section (104) controls information on the path presented by the presenting section (101) according to the degree of experience and the degree of fatigue.

Description

Specification

Driving support device, driving support method, driving support program, and recording medium

TECHNICAL FIELD [0001] The present invention relates to a driving support device, a driving support method, a driving support program, and a recording medium that support driving of a moving object. However, the use of the present invention is not limited to the above-described driving support device, driving support method, driving support program, and recording medium.

Background art

[0002] Conventionally, in a navigation device mounted on a vehicle, a function of assisting driving by predicting the occurrence of a power accident such as accident data that has occurred in the past and notifying the driver is known. To realize these functions, the accident information center server registers new accident data consisting of accident location data and accident status data in the accident information database and sends it to the vies center.

[0003] Further, the control circuit of the navigation device detects the approach to the accident occurrence position by comparing the received accident occurrence position data with the current position of the vehicle. If there is a common situation element between the accident occurrence status at the accident occurrence position and the current driving state of the vehicle during route guidance, information on the accident occurrence situation is obtained prior to passing the accident occurrence position. Output the added warning message (for example, see Patent Document 1 below) o

[0004] Patent Document 1: Japanese Patent Application Laid-Open No. 2003-014474

Disclosure of the invention

Problems to be solved by the invention

[0005] However, according to the above-described prior art, the warning is issued based only on the commonality between the accident occurrence state and the current running state of the vehicle. For this reason, even on roads that are frequently used, such as around homes or commuting roads, a warning is issued if there is a commonality between the accident occurrence and the current driving state of the vehicle. An example is the problem that is generated.

[0006] Also, there is a case where a warning is required even when the accident occurrence state and the current traveling state of the vehicle are not common. For example, when you are driving for the first time or when you are not driving When traveling in a belt, there may be cases where you want to receive warnings around the accident site even if there is no commonality with the situation of the accident. In such a case, the problem that the user is unable to issue the necessary warning is given as an example.

Means for solving the problem

[0007] In order to solve the above-described problems and achieve the object, the driving support apparatus according to the invention of claim 1 relates to a presentation means for presenting information relating to a route along which the moving body moves, and a moving state of the moving body. Using the acquisition means for acquiring information, the degree of experience for the route of the driver driving the mobile body using the information on the moving state, the calculation means, and the degree of experience calculated by the calculation means And control means for controlling information on the route presented by the presenting means.

[0008] Further, the driving support method according to the invention of claim 9 is a driving support method in a presentation device that presents information on a route along which the moving body moves, and obtains information on a moving state of the moving body. A step of calculating the degree of experience of the driver driving the moving body with respect to the route using the information on the movement state, and the presentation based on the degree of experience calculated by the calculation step. And a control step of controlling information on the route presented by the apparatus.

[0009] Further, the driving support program according to the invention of claim 10 causes a computer to execute the driving support method according to claim 9.

[0010] Further, a recording medium according to the invention of claim 11 is readable by a computer having the driving support program according to claim 10 recorded thereon.

Brief Description of Drawings

FIG. 1 is a block diagram illustrating a functional configuration of a driving support apparatus according to an embodiment.

FIG. 2 is a flowchart showing a procedure of driving support processing of the driving support device.

FIG. 3 is an explanatory diagram showing a system configuration of a driving support system according to an embodiment.

4 is a block diagram showing a hardware configuration of the navigation device FIG. 5 is a flowchart showing the procedure of an accident information management process.

[FIG. 6] FIG. 6 is a flowchart showing a procedure of a process for accumulating travel history information.

[FIG. 7] FIG. 7 is a flowchart showing a procedure of processing for calculating a driver's fatigue level.

FIG. 8 is a flowchart showing a procedure of driving support processing during traveling.

FIG. 9 is an explanatory diagram showing an example of a notification action for each risk level.

FIG. 10 is an explanatory diagram showing an example of a screen display of notification information.

Explanation of symbols

[0012] 100 Driving support device

101 presentation

102 Acquisition Department

103 Calculation unit

104 Control unit

BEST MODE FOR CARRYING OUT THE INVENTION

[0013] Exemplary embodiments of a driving support device, a driving support method, an operation support program, and a recording medium according to the present invention will be described below in detail with reference to the accompanying drawings.

[0014] (Embodiment)

FIG. 1 is a block diagram illustrating a functional configuration of a driving support apparatus that is relevant to the embodiment. In FIG. 1, a driving support device 100 that is relevant to the embodiment includes a presentation unit 101, an acquisition unit 102, a calculation unit 103, and a control unit 104. The driving support device 100 is mounted on a moving body such as a vehicle, for example, and supports driving of the driver of the moving body.

[0015] The presenting unit 101 presents information regarding a route along which the moving body moves. The information on the route is, for example, warning information on accidents that have occurred in the past on the route along which the moving body moves. In addition, the route information may be route guidance information to the destination point or facility information around the current location of the moving body.

The acquisition unit 102 acquires information related to the moving state of the moving object. The information related to the moving state of the moving object is, for example, information related to the moving range, moving time zone, and moving speed of the moving object. Further, the information related to the moving state of the moving body may be the continuous traveling time of the moving body or the traveling locus of the moving body. The acquisition unit 102 acquires a plurality of these pieces of information. Alternatively, any one of them may be acquired.

[0017] In addition, the acquisition unit 102 may acquire information related to the living body of the driver of the moving body together with information related to the moving body state. Here, the information on the living body is, for example, information such as the heart rate and sweating amount of the driver, the movement of the line of sight, and the number of blinks.

[0018] The calculation unit 103 calculates the degree of experience with respect to the route of the driver driving the mobile body using the information regarding the movement state acquired by the acquisition unit 102. For example, the calculation unit 103 calculates the degree of experience with respect to the driver's route with respect to the information ability regarding the moving range, moving time zone, and moving speed of the moving body acquired by the acquiring unit 102.

[0019] Further, the calculation unit 103 may calculate the degree of fatigue of the driver based on the information regarding the movement state acquired by the acquisition unit 102. In this case, the calculation unit 103 also calculates the degree of fatigue of the driver based on the continuous travel time of the moving object acquired by the acquiring unit 102 or the travel locus force of the moving object.

[0020] Further, when information related to the driver's living body is acquired by the acquiring unit 102, the calculating unit 103 calculates the degree of driver fatigue based on the information related to the movement state and the information related to the living body. As you do.

The control unit 104 controls information related to the route presented by the presentation unit 101 based on the degree of experience calculated by the calculation unit 103. For example, as the degree of experience with respect to the route calculated by the calculation unit 103 is higher, the control unit 104 simplifies the presentation of information regarding the route. Here, the simplification of information presentation includes, for example, a reduction in the number of information presentations and a reduction in the area occupied by information on the display screen. Also, if the degree of experience V is particularly high, do not present information!

[0022] In addition, for example, the higher the degree of driver fatigue calculated by the calculation unit 103, the more detailed the presentation of information related to the route by the control unit 104. Here, refinement of information presentation means, for example, an increase in the number of information presentations! ], Diversification of output formats such as audio output and display output, and increase in the amount of information presented.

FIG. 2 is a flowchart showing a procedure of driving support processing of the driving support device. In the flowchart of FIG. 2, first, the driving support device 100 acquires information on the moving state of the moving object by the acquiring unit 102 (step S201). Next, driving assistance device 100 The calculation unit 103 calculates the degree of experience with respect to the driver's route (step S202). Further, the calculation unit 103 calculates the degree of driver fatigue (step S203).

[0024] In the driving support device 100, the control unit 104 controls information on the route to be presented to the presentation unit 101 based on the degree of experience related to the driver's route and the degree of fatigue of the driver (step S204). Then, the information related to the route is presented by the presentation unit 101 (step S205), and the processing according to this flowchart is terminated.

[0025] As described above, according to the driving support apparatus 100 that is relevant to the embodiment, information related to the route is presented based on the degree of experience of the driver with respect to the route. As a result, it is possible to change the content of information to be presented depending on the degree of experience and to omit presentation of unnecessary information. For example, the higher the level of experience, the simpler the information to be presented, so that unnecessary presentations are reduced, only the information that is truly necessary for the driver is presented, and attention to information about the route is increased. it can.

[0026] In addition, the driving support device 100 further presents information on the route based on the degree of fatigue of the driver. As a result, the contents of the information to be presented can be changed, or information that is not normally presented can be presented. For example, the higher the degree of fatigue, the more detailed the information to be presented, so that even if the driver tends to be distracted by fatigue, attention to information about the route can be increased .

[0027] Furthermore, by presenting warning information regarding accidents that have occurred in the past as information relating to the route, it is possible to alert the driver to the accident and encourage traffic safety. In this case, by controlling the presentation of information based on the degree of experience and fatigue of the driver's route, the driver's attention to the presented information can be enhanced and further traffic safety can be encouraged. it can.

Example

[0028] Next, an example of the driving support device 100 that works on the above-described embodiment will be described. In the present embodiment, a case where the driving support device 100 is applied to a driving support system in which a navigation device is used will be described.

FIG. 3 is an explanatory diagram showing a system configuration of the driving support system according to the embodiment. Figure 3, the driving support system 300 includes a vehicle 310, a navigation device 320, an accident information management center 330, and a network 340. The vehicle 310 is boarded by a driver and a passenger and travels on the road L toward each destination point.

[0030] The navigation device 320 is mounted on the vehicle 310 and performs route search and route guidance to a destination point. The navigation device 320 has an accident information database about accidents that have occurred in the past. When the vehicle 310 reaches the vicinity of the accident occurrence point, it warns the accident as necessary. Here, whether or not the force requires a warning depends on the degree of experience with the road, the fatigue level of the driver, the degree of similarity between the current driving state and the situation of the accident, etc.

[0031] The accident information management center 330 creates a database of accident information on traffic accidents that have occurred in the past. The accident information database (accident information database) stores the data of the location where the accident occurred (accident occurrence location data) and the situation data (accident occurrence status data) where the accident occurred. The accident information management center 330 updates the accident information database to the latest data by automatically inputting these data from the police or by automatically inputting emergency notification data of the Mayday system (emergency notification system). Then, the accident information management center 330 transmits the accident information database to the navigation device 320 of the vehicle 310 via the network 340.

[0032] The accident occurrence position data stored in the accident information database is composed of latitude'longitude, intersection name, and the like. In addition, the accident occurrence status data includes the traveling direction (right turn, left turn, straight ahead) of the vehicle 310 at the time of the accident, speed, time, season, weather, road surface condition, number of passengers, destination point, maintenance status of the vehicle 310, It consists of driving duration, surrounding traffic, and accident types such as interpersonal objectives.

[0033] (Hardware configuration of navigation device)

FIG. 4 is a block diagram showing a hardware configuration of the navigation device. In FIG. 4, a navigation device 320 includes a navigation control unit 401, a user operation unit 402, a display unit 403, a position acquisition unit 404, a recording medium 405, a recording medium decoding unit 406, and an audio output. A unit 407, a communication unit 408, a route search unit 409, a route guidance unit 410, and a voice generation unit 411 are configured. The navigation control unit 401 controls the entire navigation device 320. The navigation control unit 401 is realized by, for example, a microcomputer configured by a CPU that executes predetermined arithmetic processing, a ROM that stores various control programs, and a RAM that functions as a work area of the CPU. Can do.

The user operation unit 402 outputs information input and operated by the user carrying the navigation device 320, such as characters, numerical values, and various instructions, to the navigation control unit 401. As the configuration of the user operation unit 402, various known forms such as a push button switch, a touch panel, a keyboard, and a joystick that detect physical presses Z non-presses can be employed. The user operation unit 402 may be configured to perform an input operation by sound using a microphone that inputs sound from the outside.

[0036] The form of the user operation unit 402 may be configured in any one of the various forms described above, and may be configured in a plurality of forms such as a touch panel and a push button switch, for example. May be. The user inputs information by appropriately performing an input operation according to the form of the user operation unit 402.

[0037] Display unit 403 includes, for example, a CRT (Cathode Ray Tube), a TFT liquid crystal display, an organic EL display, a plasma display, or the like. Specifically, the display unit 403 can be constituted by, for example, a video IZF or a video display device connected to the video IZF.

[0038] Specifically, the video IZF includes, for example, a graph iterator controller that controls the entire display device, and a VRAM (Video

RAM) and a control IC that controls the display device display based on image information output from the graphic controller. The display unit 4003 displays icons, cursors, menus, windows, or various information such as characters and images. The display unit 403 displays map information recorded on the recording medium 405 and information on route guidance.

[0039] The position acquisition unit 404 is configured by a GPS receiver, for example, and acquires information on the current position of each navigation device 320. A GPS receiver receives radio waves (GPS data) from GPS satellite power and determines the geometric position of the GPS satellite. What is GPS? This is an abbreviation for Global Positioning System, which is a system that accurately obtains the position on the ground by receiving radio waves from four or more satellites. The GPS receiver consists of an antenna for receiving radio waves of GPS satellite power, a tuner that demodulates the received radio waves, and an arithmetic circuit that calculates the current position based on the demodulated information.

[0040] Further, the position acquisition unit 404 acquires data output from various sensors such as a speed sensor, an angular speed sensor, a travel distance sensor, and an inclination sensor provided in the host vehicle, and the position of the host vehicle is combined with the GPS data. To identify. Thereby, the identification accuracy of the own vehicle position can be improved.

The recording medium 405 records various control programs and various information in a state that can be read by a computer. The recording medium 405 accepts writing of information by the recording medium decoding unit 406 and records the written information in a nonvolatile manner. The recording medium 4 05 can be realized by HD, for example.

[0042] The recording medium 405 is not limited to HD. Instead of HD or in addition to HD, DVD (Digital Versatile Disk), CD (Compact Disk), etc. can be attached to and detached from the recording medium decoding unit 406. Therefore, a medium having portability may be used as the recording medium 405. The recording medium 405 is not limited to a DVD and a CD, and is a removable medium that is removable from the recording medium decoding unit 406 such as a CD-ROM (CD-R, CD-RW), MO, and memory card. It can also be used.

[0043] The map information recorded on the recording medium 405 includes background data representing features such as buildings, rivers, and the ground surface, and road shape data representing road shapes. Rendered in 2D or 3D on the display screen of part 403. When the navigation device 320 is guiding a route, the map information recorded on the recording medium 405 and the vehicle position acquired by the position acquisition unit 404 are displayed in an overlapping manner.

In this embodiment, the map information is recorded on the recording medium 405. However, the present invention is not limited to this. The map information may be provided outside the navigation device 320, not the information recorded only in the one integrated with the hardware of the navigation device 320. In that case, the navigation device 320 is, for example, the communication unit 4. The map information is acquired through the network 340 through 08, and the acquired map information is stored in the RAM or the like.

[0045] Further, the recording medium 405 records the accident information database transmitted from the accident information management center 330. As described above, the accident information management center 330 sequentially updates the accident information database and transmits it to the navigation device 320. An accident information database received by a communication unit 408 described later is stored in the recording medium 405. For this reason, the accident information database recorded on the recording medium 405 is always up-to-date.

The recording medium decoding unit 406 controls reading of information on the recording medium 405 and Z writing. For example, when HD is used as the recording medium 405, the recording medium decoding unit 406 is an HDD (Hard Disk Drive). Similarly, when DVD or CD (including CD-R and CD-RW) is used as the recording medium 405, the recording medium decoding unit 406 is a DVD drive or a CD drive. When a CD-ROM (CD-R, CD-RW), MO, memory card, etc. is used as the writable and removable recording medium 405, information can be written to the various recording media 405 and various recording media. A dedicated drive device capable of reading the information recorded in 405 is used as the recording medium decoding unit 400 as appropriate.

[0047] The audio output unit 407 includes an audio output speaker and an audio IZF. The audio output unit 407 reproduces the guide sound by controlling the output to the audio IZF power speaker. There may be one or more speakers. The audio I / F is, for example, a DZA converter that performs DZA conversion of audio digital information, an amplifier that amplifies the audio analog signal that is output from the DZA comparator, an AZD converter that performs AZD conversion of audio analog information, Can be composed of force.

[0048] The communication unit 408 includes various communication devices, and transmits / receives information to / from other devices connected to the network 340 (see FIG. 3). Here, the communication by the communication unit 408 communicates with the base station by wireless communication, for example, and connects to the network 340 through the base station. The base station covers a predetermined range of its position power as a communication area, and the communication area can be uninterrupted! Install it.

[0049] The communication unit 408 also uses VICS (Vehicle Inf. ormation and Communication System) It is also possible to receive road traffic † blueprints from the center force. The received road traffic information is displayed on the display unit 303 or used as a route search judgment material in the route search unit 409 described later.

[0050] The route search unit 409 searches for an optimal route from the departure point to the destination point using map information recorded in the recording medium 405 and the like. Here, the optimal route is the shortest (or fastest) route to the destination or the route that best meets the conditions specified by the user. For example, if user power ^ route with low toll "is specified, search for! / ヽ routes that avoid toll roads whenever possible.

[0051] The route guidance unit 410 also sends the guidance route information searched by the route search unit 409, the position information of the navigation device 320 itself acquired by the position acquisition unit 404, and the recording medium 405 power via the recording medium decoding unit 406. Based on the map information obtained, real-time route guidance information is generated. The route guidance information generated by the route guidance unit 410 is output to the display unit 403 and the voice output unit 407 via the navigation control unit 401.

[0052] The sound generation unit 411 generates tone and sound information corresponding to the pattern. That is, based on the route guidance information generated by the route guidance unit 410, the virtual sound source corresponding to the guidance point is set and the voice guidance information is generated. The voice output unit 407 is provided via the navigation control unit 401. Output to.

[0053] Of the configuration of the driving support apparatus 100 that is relevant to the embodiment, the presentation unit 101 is based on the display unit 403 and the voice output unit 407, and the acquisition unit 102 is based on the navigation control unit 401 and the communication unit 408. The calculation unit 103 realizes its function by the navigation control unit 401, and the control unit 104 by the navigation control unit 401 and the voice generation unit 411.

[0054] (Accident Information Management Process of Accident Information Management Center)

FIG. 5 is a flowchart showing the procedure of the accident information management process. First, the procedure of the accident information management process performed by the accident information management center 330 will be described. In the flow chart of FIG. 5, the accident information management center 330 first determines whether accident information has been input by the police or the emergency call system (step S501). Here, waiting for the input of accident information (step S501: No loop), if input (step S501: Yes), input Based on the input information, data for updating the accident information database is generated (step S502), and the accident information database is updated with the generated information (step S503).

[0055] Then, the accident information management center 330 transmits the updated accident information database to the navigation device 320 (step S504), and ends the processing according to this flowchart. The data to be transmitted to the vehicle 310 may be only the updated data, or the updated database may be transmitted as it is. As described above, the accident information management center 330 acquires information on accidents that have occurred and updates the accident information database sequentially.

[0056] (Driving support processing of the navigation device 320)

Next, driving support processing performed by the navigation device 320 will be described. As described above, the navigation device 320 performs route search and route guidance to the destination point, and when traveling near the point where the accident occurred in the past, it responds to the accident as necessary. Give a warning. In other words, the navigation device 320 receives the accident information database transmitted from the accident information management center 330 and warns of the accident while traveling. At this time, it is determined whether or not to issue a warning from the history information of the own vehicle and the driver's fatigue level.

FIG. 6 is a flowchart showing the procedure of the travel history information accumulation process. In the flowchart of FIG. 6, the navigation device 320 first determines whether or not the vehicle has started running (step S601). Whether the vehicle has started traveling is determined from the output of the position acquisition unit 404 or a speed sensor provided on the vehicle body. Here, after waiting for the vehicle to start traveling (step S601: No loop) and when the vehicle starts traveling (step S601: Yes), various sensors (speed sensors, The output from the angular velocity sensor, acceleration sensor, etc.) is acquired (step S602). Further, the current position information is received by the position acquisition unit 404 (step S603).

[0058] Then, the travel range, travel time zone, and travel speed of the vehicle are calculated from these pieces of information (step S604). Here, the travel range is information on the area moved in the actual travel. The travel time zone is information such as the day of the week and the time zone during the day. The traveling speed is information on the speed of the vehicle during traveling. Next, the calculated travel range, travel time zone, travel Based on the speed, the degree of experience with respect to the travel range, travel time zone, and travel speed is calculated (step S605). The experience level is, for example, in the case of a travel range, the number of travels by area. Further, in the case of a travel time zone, the number of times of travel by day of the week or 'time zone' is somewhat, and in the case of travel speed, it is the amount of accumulated travel time by speed.

[0059] The navigation device 320 accumulates the experience of the travel range, travel time zone, and travel speed as travel history information (step S606). Until the vehicle finishes traveling (step S607: No), the process returns to step S602, and the subsequent processing is repeated to continue accumulation of the traveling history. On the other hand, when the host vehicle finishes traveling (step S607: Yes), the processing by this flowchart is terminated. By the processing as described above, the navigation device 320 accumulates travel history information.

Next, a process for calculating the driver's fatigue level will be described. If the driver's fatigue level increases due to continuous running over a long period of time, the concentration becomes distracted and higher caution is required for accidents. For this reason, in the navigation device 320, the driver's fatigue level is also used as an index as to whether or not to warn of an accident.

FIG. 7 is a flowchart showing the procedure of the driver fatigue level calculation process. In the flowchart of FIG. 7, the navigation device 320 first determines whether or not the vehicle has started running (step S701). Here, wait for the vehicle to start running (step S701: No loop), and if the vehicle starts running (step S701: Yes), measure the continuous running time from the start of running. (Step S702). The measured continuous running time is used as an index for calculating the driver's fatigue level. For example, the longer the continuous running time, the higher the fatigue level of the driver.

[0062] In addition, the navigation device 320 acquires a measurement value of the driver's biometric data (step S703). Here, the biometric data of the driver is information such as the heart rate, the amount of sweat, the movement of the line of sight, the number of blinks, and the like. These biometric data are used as an index for calculating the driver's fatigue level, like the continuous running time measured in step S702. For example, if the number of blinks increases or the movement of the line of sight is diffuse, the degree of fatigue is considered to have increased.

[0063] Further, the navigation device 320 measures the meandering degree of the vehicle 310 (step S704), The moving speed is measured (Step S705). The data obtained from these measurements is also used as an index for calculating the driver's fatigue level. For example, if the meandering level of a vehicle is increasing, the fatigue level is considered to have increased. Fatigue is also considered to increase when high-speed driving continues for a long time.

[0064] Then, navigation device 320 calculates the driver's fatigue level based on the information measured in steps S702 to S705 (step S706). Until the vehicle finishes traveling (step S707: No), the process returns to step S702, and the calculation of the driver's fatigue is continued by repeating the subsequent processing. On the other hand, when the host vehicle finishes traveling (step S707: Yes), the processing by this flowchart is terminated. By the processing as described above, the navigation device 320 calculates the driver's fatigue level.

[0065] Next, details of the driving support process during traveling will be described. The navigation device 320 accumulates the driving history information and calculates the driver's fatigue level as described above, and at the same time uses this information to warn of the accident and assist the driver's driving. To do.

FIG. 8 is a flowchart showing the procedure of the driving support process during traveling. In the flowchart of FIG. 8, the navigation device 320 receives the update information of the accident information database transmitted from the accident information management center 330 (see FIG. 3) (step S801). As a result, the accident information database recorded on the recording medium 405 of the navigation device 320 is sequentially updated to the latest one.

[0067] Next, the navigation device 320 detects the traveling state of the host vehicle (step S802). The traveling state of the host vehicle is, for example, the traveling speed, the current position, the continuous traveling time, and the like, and is the same information as the traveling history information acquired by the process shown in FIG. Further, the navigation device 320 calculates the driver's fatigue level by the process shown in FIG. 7 (step S803).

[0068] Then, the navigation device 320 determines whether the current position acquired by the position acquisition unit 404 is within a predetermined range from the accident occurrence point included in the accident information database (step S804). When the accident occurrence point force is also within the predetermined range (step S804: Yes), the risk of the vehicle is calculated (step S805). On the other hand, within the predetermined range from the accident occurrence point If not (Step S804: No), the process returns to Step S801 and the subsequent processing is repeated.

Here, the risk level of the host vehicle is determined based on, for example, the similarity between the accident occurrence state and the current travel state, the experience level of the current travel state, and the driver's fatigue level. In addition, the similarity between the accident occurrence status and the current driving state is obtained by acquiring the accident occurrence status around the current position of the vehicle from the accident information database, and Calculate by comparing. The information to be compared includes, for example, information such as travel speed, travel time zone, continuous travel time, traffic conditions, and weather.

[0070] In addition, as for the experience level of the current travel state, specifically, the experience level for the current travel state of the vehicle detected in step S802 is referred to from the travel history information. For the driver's fatigue level, specifically, the value of the driver's fatigue level calculated in step S803 is used. Based on these comprehensive judgments, the navigation device 320 calculates the risk level of the vehicle. For example, if the risk level is expressed in 6 levels from level 0 to level 5, the accident occurs at the level 5 if it is the first time to pass this time, and it is usually a point that has been passed several times in the past. Level 3 if it is not in the time zone in which it travels (low experience level in the time zone), level 0 if it is a frequent travel location and the time zone, speed, continuous running time, etc. are also highly experienced Calculate as follows.

[0071] Then, navigation device 320 generates notification information in accordance with the degree of risk (step S806). Then, the generated notification information is notified to the inside of the vehicle (step S807), and the processing according to this flowchart is terminated. Here, the notification information in accordance with the risk level in step S806 is generated by generating a notification about an accident that occurred around the current position of the vehicle in a format corresponding to the risk level. In the above example, the output format and contents differ depending on the level of risk.

FIG. 9 is an explanatory diagram showing an example of a notification action for each risk level. The level-specific notification information list 900 includes a level area 901 and an action area 902. Level area 901 shows the level of risk. Figure 9 shows 6 levels, levels 0-5. In the action area 902, the content (action) of the notification information corresponding to each risk level is checked. In the action area 902, as a specific action, for example, an accident information icon indicating that there is information on an accident that occurred at that point. Display, warning message 'warning message display or audio output.

[0073] Regarding the content of the action, for example, at the level 0 where the risk is the lowest, no items are checked in the action area 902. In other words, no warning is given for accidents. At level 5, the highest risk level, an icon is displayed at the location where the accident occurred, a warning message is displayed, audio output, and alarm sound output are checked, prompting attention to the accident. Note that the notification action for each danger level may be determined by the user.

FIG. 10 is an explanatory diagram showing an example of a screen display of notification information. On the display unit 403 of the navigation device 320, a map display 1001 around the current position of the vehicle is displayed. In the map display 1001, a vehicle position display 1002 and an accident occurrence point display 1003 are displayed. The vehicle position display 1002 indicates the current position of the vehicle on the map. The accident occurrence point display 1003 indicates the position on the map where the accident occurred in the past.

[0075] In addition, the display unit 403 displays a caution message 1004 that calls attention to the accident. The warning message 1004 displays a message that calls attention to an accident that occurred in the vicinity. Depending on the level of danger, the content of the caution message 1004 may be output as a sound. Further, when the detailed information button 1005 is pressed, detailed information on the accident that occurred in the accident location display 1003 is displayed.

[0076] As described above, according to the driving support system 300, the content and output format of the notification information related to the accident are changed based on the experience level of the driving state and the driver's fatigue level. As a result, more appropriate information can be notified to the driver and attention to the information can be enhanced.

[0077] In particular, when the vehicle is in a traveling state with a high degree of experience, it is possible to reduce the annoyance caused by notification of unnecessary information without performing information notification. Also, when the vehicle is in a driving state with a low experience level, even if the similarity between the accident information and the current situation is low, no notification is given and a safer driving can be promoted. Even when the driver's fatigue level is high, accident information is reported even if the similarity between the accident information and the current situation is low, and safety driving that is likely to be distracted by fatigue Can be directed to. The driving support method described above can be realized by executing a prepared program on a computer such as a personal computer workstation. This program is recorded on a computer-readable recording medium such as a hard disk, a flexible disk, a CD-ROM, an MO, or a _{DVD, and} is executed by being read by the computer. The program may be a transmission medium that can be distributed through a network such as the Internet.

Claims

The scope of the claims

[1] A presentation means for presenting information on a route traveled by a moving object,

Obtaining means for obtaining information on a moving state of the moving body;

A calculating means for calculating a degree of experience of the driver who drives the moving body using the information on the moving state;

Control means for controlling information on the route presented by the presenting means based on the degree of experience calculated by the calculating means;

A driving support apparatus comprising:

2. The driving support apparatus according to claim 1, wherein the control means simplifies presentation of information on the route as the degree of experience with the route increases.

[3] The acquisition unit acquires information on at least one of a moving range, a moving time zone, and a moving speed of the moving body as information on the moving state,

2. The driving support device according to claim 1, wherein the calculation unit calculates a degree of experience with respect to the route based on the information acquired by the acquisition unit.

[4] The calculation means calculates the degree of fatigue of the driver based on the information on the moving state,

2. The driving support apparatus according to claim 1, wherein the control unit controls information on the route presented by the presentation unit based on the degree of fatigue.

5. The driving support apparatus according to claim 4, wherein the control means makes the presentation of information on the route more detailed as the degree of fatigue is higher.

[6] The acquisition unit acquires at least one of a continuous travel time of the mobile body or a travel locus of the mobile body as information on the travel state,

5. The driving support device according to claim 4, wherein the calculating unit calculates the degree of fatigue based on the information acquired by the acquiring unit.

[7] The acquisition means acquires information about the driver's living body together with information about the moving body state,

5. The driving support according to claim 4, wherein the calculation means calculates the degree of fatigue based on information on the moving body state and information on the living body. Supporting device.

[8] The presenting means includes

The driving support device according to any one of claims 1 to 7, wherein warning information related to an accident that has occurred in the past on a route along which the moving body moves is presented.

[9] A driving support method in a presentation device for presenting information on a route traveled by a moving object,

An acquisition step of acquiring information relating to a moving state of the moving body;

A calculation step of calculating a degree of experience with respect to the route of the driver who drives the moving body using the information on the moving state;

A control step for controlling information on the route presented by the presentation device based on the degree of experience calculated by the calculation step;

A driving support method comprising:

[10] A driving support program that causes a computer to execute the driving support method according to claim 9.

[11] A computer-readable recording medium in which the driving support program according to claim 10 is recorded.