JP4738852B2 - Driving support device and driving support system - Google Patents

Description

  The present invention relates to a driving support apparatus and a driving support system that provide support information to a driver for the purpose of avoiding danger during driving.

As a conventional technique for reducing accidents while driving a car, for example, when the distance between the vehicle and the preceding vehicle is abnormally shortened, a warning buzzer is sounded to notify the driver of the danger or the brake is automatically controlled. A collision detection system vehicle safety device has been proposed. According to Patent Document 1, according to the driving skill level of the driver, educational information for teaching driving skills is provided, or an accident pattern is notified when approaching a place where a traffic accident is likely to occur. A driving assistance device has been proposed.
JP 2004-171060 A

  However, in general, the driving skill of the driver improves as the years of driving experience and the number of driving times increase, but there are accidents that occur even if the driving skill of the driver improves. In the prior art, risk avoidance for such an accident cannot be realized.

  Therefore, the object of the present invention is to analyze the personality (driving tendency) of the driver appearing during driving, which is not related to the driving skill, and classify accidents that occurred in the past according to the driving tendency of the parties concerned, An object of the present invention is to provide a driving support device that notifies a dangerous location based on information on accidents that have occurred in the past by other people with a tendency. Preferably, accidents that occurred in the past are classified according to the driving conditions at the time of the accident (weather, time, road surface conditions, vehicle conditions, etc.), and information on accidents that occurred in a situation that matches the current driving conditions The present invention provides a driving support device that notifies the driver of the above.

  According to the first aspect of the present invention, the object described above is a storage unit including in advance an accident table associating position information of an accident occurrence point with a driving type obtained by analyzing a driving tendency of a party of the accident. A position detection unit that detects a current position of the vehicle, an identification unit that identifies a driver of the vehicle, an analysis unit that analyzes a driving tendency of the driver identified by the identification unit, and determines the driving type; The location of the accident corresponding to the driving type determined by the analysis unit is identified with reference to the accident table, and the location of the identified accident is detected by the position detection unit And a driving support unit that notifies information related to the point of occurrence of the accident corresponding to the driving type. This is achieved by providing a driving support device.

  According to a more preferred embodiment of the above aspect of the invention, the driving support unit is configured to generate a sound signal for reproducing a sound notifying the occurrence point of the identified accident on a speaker and / or the identified accident. An image signal for displaying an image notifying the occurrence point on the display unit is generated. According to a more preferred embodiment of the above aspect of the invention, the driving support unit corresponds to the driving type when an accident occurrence point corresponding to the driving type is within the first distance from the current position. Generating an image signal for displaying a detour to avoid an accident occurrence point on the display unit, and an accident occurrence point corresponding to the driving type is a second distance shorter than the first distance from the current position When the vehicle approaches, the sound signal and / or the video signal for notifying the occurrence point of the accident corresponding to the driving type are generated.

  According to a more preferred embodiment of the above aspect of the invention, the driving support unit further includes a sound signal and / or an image signal for notifying a road regulation situation or a road congestion situation within the predetermined distance from the current position. Is generated. According to a more preferred embodiment of the above aspect of the invention, the driving support unit further generates a sound signal and / or an image signal for notifying the position of the store located within the predetermined distance from the current position. To do. According to a more preferred embodiment of the above aspect of the present invention, the driving support unit further generates a sound signal and / or an image signal for notifying promotion information related to a product or service provided at the store.

  According to a more preferred embodiment of the above aspect of the present invention, the accident table is further associated with position information of the accident occurrence point in association with a travel condition at the time of occurrence of the accident. A vehicle information unit for detecting the driving condition of the vehicle, wherein the driving support unit specifies the accident occurrence point corresponding to the driving condition detected by the vehicle information unit with reference to the accident table, When the occurrence point of the accident corresponding to the travel condition is within a predetermined distance from the current position detected by the position detection unit, information on the occurrence point of the accident corresponding to the travel condition is notified.

  In addition, according to the second aspect of the present invention, the object described above is a storage unit that preliminarily includes an accident table that associates position information of an accident occurrence point with a traveling condition at the time of occurrence of the accident, and a current position of the vehicle. A location detecting unit for detecting the vehicle, a vehicle information unit for detecting a traveling condition of the vehicle, and an occurrence point of the accident corresponding to the traveling condition detected by the vehicle information unit with reference to the accident table. A driving support unit for notifying information on the point of occurrence of the accident corresponding to the travel condition when the specified point of occurrence of the accident is within a predetermined distance from the current position detected by the position detection unit; This is achieved by providing a driving assistance device characterized by having the driving assistance device.

  According to a third aspect of the present invention, there is provided a driving support system comprising a driving support device provided in a vehicle and a server connected to the driving support device so as to be able to communicate with the driving support device. The apparatus includes a position detection unit that detects a current position of the vehicle, an identification unit that identifies a driver of the vehicle, and an analysis unit that analyzes a driving tendency of the driver identified by the identification unit and identifies a driving type A communication unit that notifies the server of the driving type specified by the analysis unit, receives position information of the accident occurrence point transmitted from the server, and position information received by the communication unit. A driving support unit for notifying information on the occurrence point of the accident when the occurrence point of the accident based on the current position detected by the position detection unit is within a predetermined distance; Based on the driving type transmitted from the driving support device, a storage unit that includes in advance an accident table that correlates the location information of the accident occurrence point and the driving type of the party involved in the accident, refer to the accident table, This is achieved by providing a driving support system comprising a response unit that transmits position information of an accident occurrence point corresponding to the driving type to the driving support device.

According to a fourth aspect of the present invention, the above object is provided in accordance with a driving support device provided in a vehicle, and the driving support device that is communicably connected to each other. A driving support method in a driving support system having a server that includes in advance an accident table that associates driving types obtained by analyzing driving tendencies, wherein the driving support device detects the current position of the vehicle, and A support device identifies a driver of the vehicle, the drive support device analyzes a driving tendency of the identified driver to identify a drive type, and the drive support device detects the identified drive type. To the server, and based on the driving type transmitted from the driving support device, the server transmits position information of an accident occurrence point corresponding to the driving type to the driving support device. The driving support device receives position information of the accident occurrence point transmitted from the server, and the accident occurrence point based on the received position information is within a predetermined distance from the detected current position. In this case, the present invention is achieved by providing a driving support method characterized by notifying information on the location of the accident.

  In addition, according to the fifth aspect of the present invention, the object described above is a storage unit that preliminarily includes an accident table associating position information of an accident occurrence point with an operation type obtained by analyzing a driving tendency of the accident party. A driving support apparatus communicably connected to a server that responds to position information of the accident occurrence point corresponding to the driving type, a position detecting unit that detects a current position of the vehicle, and the vehicle An identification unit for identifying the driver of the vehicle, an analysis unit for analyzing the driving tendency of the driver identified by the identification unit, identifying the driving type, and the driving type identified by the analyzing unit in the server A communication unit that notifies and receives the location information of the accident occurrence point transmitted from the server, and the accident detection point based on the location information received by the communication unit is detected by the position detection unit. If there within current position and a predetermined distance is achieved by providing a driving support device, characterized in that it comprises a driving support unit for notifying the information about the occurrence point of the accident.

  According to a sixth aspect of the present invention, there is provided a driving support system comprising a driving support device provided in a vehicle and a server that is communicably connected to the driving support device. The device notifies the server of a position detection unit that detects the current position of the vehicle, a driving tendency information acquisition unit that acquires information about a driving tendency of the driver, and the driving tendency, and is transmitted from the server. A communication unit that receives position information of an accident occurrence point, and the accident occurrence point based on the position information received by the communication unit is within a predetermined distance from the current position detected by the position detection unit A driving support unit for notifying information on the location of the accident, and the server is configured to provide the driver's information based on the information on the driving tendency transmitted from the driving support device. Analyzing the turning tendency and identifying the driving type, the storage unit preliminarily including an accident table for associating the location information of the accident occurrence point and the driving type of the party involved in the accident, and identifying by the analyzing unit A driving unit comprising: a response unit that refers to the accident table based on a driving type to be transmitted and transmits position information of an accident occurrence point corresponding to the specified driving type to the driving support device; This is accomplished by providing a system.

  According to the present invention, an accident occurrence point (hazardous location) based on driving tendency (the driver's personality that is unrelated to the driving skill) and driving conditions (weather, time, road surface condition, vehicle state, etc.) This information is notified to the driver, and even a driver who has improved driving skill can appropriately grasp a point to be noted. In addition, since the dangerous location is notified based on the driving history of other people who have the same driving tendency and driving conditions as the user, it is possible to appropriately notify the user of the danger that is difficult for the person to notice.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. However, the technical scope of the present invention is not limited to such embodiments, but extends to the invention described in the claims and equivalents thereof.

  FIG. 1 is a configuration block diagram of a driving support device 1 according to the first embodiment. In particular, the driving support device 1 of the present embodiment has a navigation function for an automobile and is installed in the automobile.

In the driving support apparatus 1 of the first embodiment, a control unit 11, a RAM (Random Access Memory) 12, a storage unit 13, an identification unit 14, a drive unit 15, and information that are connected to each other via a bus 40 are input. An input unit 16, a speaker 17, a display unit 18 for outputting information and giving information to a user, and a sensor signal processing unit 19 are included.

The control unit 11 includes a CPU (Central Processing Unit) (not shown), executes a program stored in the RAM 12, and controls each unit included in the driving support device 1. The RAM 12 is a storage means for temporarily storing calculation results and programs in the processing of the driving support device 1.

The storage unit 13 is a storage unit that stores a program such as an OS (Operating System) that controls the driving support device 1. As the storage unit 13, a ROM (Read Only Memory), a hard disk or the like is used.

  The identification unit 14 is an information input unit that identifies the driver of the automobile. For example, a biometric feature (biometrics) reading unit such as a fingerprint reader, a vein reader, an iris reader, and a microphone is read. Is preferred. The drive unit 15 is a device for reading map information 151 stored in a storage medium such as a CD (Compact Disc), a DVD (Digital Versatile Disk), an MO (Magneto-Optical) disk, or a flash memory.

  The input unit 16 is an input means for inputting a user request such as a button, a cross key, and a touch panel provided in a liquid crystal display. The speaker 17 is an output unit that outputs sound reproduced by the driving support device 1, and the display unit 18 is a display unit that outputs information and gives information to the user, and is a CRT (Cathode Ray Tube). It is realized with a liquid crystal display or the like.

  The sensor signal processing unit 19 processes signals from various sensors and gives information obtained as processing results to the control unit 11. Various sensors include a GPS (Global Positioning System) sensor for measuring the current location of the vehicle, a distance sensor for calculating a travel distance based on a vehicle speed pulse generated according to the number of wheel rotations, and a gyro sensor for detecting a traveling direction. In addition, a winker sensor that detects the start of the winker and identifies either right or left turn is included. In addition, various information is collected in the driving support device 1 via the sensor signal processing unit 19 based on sensors installed in each part of the automobile.

  Thus, the driving support device 1 calculates the current location of the host vehicle based on the information obtained via the sensor signal processing unit 19 and the map information read out via the drive unit 15, and indicates the position of the host vehicle. And a map around the current location are displayed together on the display unit 18. In addition, a guidance route to the destination input by the user may be calculated and displayed on the display unit 18 together. Thus, the driving assistance device 1 provides the navigation function to the user.

  Moreover, the driving assistance apparatus 1 of 1st Embodiment provides the danger avoidance function which notifies the dangerous location based on a driver | operator's driving tendency with the said navigation function. That is, the driving assistance device 1 classifies the driving tendency of the driver into a plurality of types, and urges the driver to pay attention to the dangerous place with reference to information on accidents that have occurred in the past by another driver of the same type. .

  The driving tendency indicates the personality that appears when the driver holds the steering wheel and the situation during driving. The driving tendency is, for example, the number of times the accelerator is stepped on, the number of seconds, the continuous driving time of one time, the way of selecting the road to go through, the number of sudden braking, the number of sudden steering, how to determine the distance between vehicles Based on the analysis.

In addition, the driving support device 1 according to the first embodiment also provides a risk avoidance function for notifying a dangerous point based on a travel condition (weather, time, road surface condition, vehicle state, etc.). In other words, the driving support device 1 classifies accidents that occurred in the past according to the driving conditions at the time of the accident, and refers to the information about the accidents that occurred in a situation close to the driving conditions of the own vehicle to the driver. Call attention to hazardous areas. In this way, even a driver whose driving skill has been improved to some extent can appropriately notify the person himself / herself of the danger that is difficult to notice.

  Hereinafter, the map information used in 1st Embodiment and the data structural example of the data stored in the memory | storage part 13 of the driving assistance device 1 of 1st Embodiment are demonstrated using FIGS. And operation | movement of the driving assistance apparatus 1 of 1st Embodiment using those data is demonstrated after description of a data structural example.

  FIG. 2 is a diagram illustrating an example of the map information 151 used by the driving support apparatus 1 according to the first embodiment. In FIG. 2, two-dimensional coordinates are introduced, with the north on the top.

  The map information 151 is formed by nodes having attributes such as intersections and corners and links that are roads connecting the nodes. Other node attributes include an end point indicating a dead end, a three-dimensional intersection, a prefectural border, and the like, and the node is arranged at a position having such characteristics. In FIG. 2, circles are nodes and lines connecting the circles are links.

  The driving support device 1 cuts out a portion to be presented to the user from a vast map. In FIG. 3, a display area 31 surrounded by a thick line is a portion displayed on the display unit 18, that is, a portion presented to the user. The display area 31 includes a mark 32 (a triangle surrounded by a round dotted circle) indicating the current location of the vehicle, and the user can see a map around the current location.

  FIG. 3 is a diagram illustrating a data configuration example of the map information 151 used in the navigation function. The map data of FIG. 3 includes data items of “node”, “attribute”, “positional coordinate”, “connection node”, “link”, “distance”, “exit direction”, and “route setting”.

  “Node” is an identifier for identifying each node. “Attribute” is information indicating the attribute of the node. “Position coordinates” is position information indicating the position of the node, and latitude and longitude can be used as the position coordinates.

  The “connection node” is an identifier for identifying another node connected to a certain node. “Link” is an identifier for identifying a link connected to a certain node. “Distance” is the length of the link and is the distance when the vehicle travels on the link. The “exit direction” is a direction in which the vehicle faces when leaving the node.

  The “exit direction” is described by, for example, an angle from the X axis in the map coordinate system. “Route setting” is flag information indicating whether each link is included in the guidance route to the destination designated by the user. That is, when “route setting” is “present”, the navigation function indicates that the route is incorporated in the route (guide route) to the destination set by the user.

For example, taking FIG. 2 as an example, node N1 is connected to node N2 in the northeast direction, node N3 in the southeast direction, node N6 in the southwest direction, and node N11 in the northwest direction via a predetermined length link. Is an intersection. This is expressed as data in the entries from the first line to the fourth line in FIG. Further, referring to FIG. 3, it can be seen that the link L13 connecting the node N1 and the node N3 is included in the guide route.

  FIG. 4 is a diagram illustrating a data configuration example of the accident table 131 in which analysis results of accidents that have occurred in the past are stored. The accident table 131 is stored in the storage unit 13 in advance as a premise of the embodiment.

  The accident table of FIG. 4 includes data items of “position coordinates”, “node / link flag”, “driving type”, “running condition flag”, and “accident type”.

  “Position coordinates” is coordinate information of an accident occurrence point, and specifies a point on the map using coordinates defined in the map information shown in FIGS. The “node / link flag” indicates whether the accident occurrence point is a node or a link in the map information. As a result, it can be seen whether the accident occurred at a node having an attribute such as an intersection or a corner, or occurred on a road connecting the nodes.

  “Driving type” indicates the driving type when the driving tendency of the accident party is classified. The process of classifying the driving type based on the driving tendency of the driver will be described later with reference to FIG.

  In constructing the accident table 131, the driving type of the driver classified at the time of the accident is collected and associated with the accident. Note that there are cases where there are perpetrators and victims as parties to the accident, but at least the driving type of the perpetrator is stored in the accident table 131.

  The “running condition flag” indicates the running condition at the time of the accident occurrence, and means that “Y” does not satisfy the corresponding condition when “Y” satisfies the corresponding condition. The “running condition flag” includes a lower item whose title is “running item ID” in a running condition table 135 to be described later.

  For example, according to FIG. 8 to be described later, “C1” in the travel condition flag is “night”, “C2” is “fog”, “C3” is “freezing”, “C4” is “rain”, and “C5” is It can be seen that “long time”, “C6” corresponds to “strong wind”, “C7” corresponds to “loading amount”, and “C8” corresponds to “congestion”. In the case of the first entry (row data) in FIG. 4, the driving condition flags “C1” and “C2” are “Y”. Indicates that it occurred.

  The “accident type” classifies accidents that have occurred by type, and is used to specify a message to be notified to the driver. By using the “accident type”, the cause of the accident is classified in detail, for example, a single property damage accident, a slip accident, an accident when turning right at the intersection, a visibility obstruction accident due to an oncoming vehicle light, an accident due to overtaking, and the like.

  FIG. 5 shows a data configuration example of the voice correspondence table 132 that associates the sound reproduced when the vehicle on which the driving assistance apparatus 1 is mounted approaches the accident occurrence point and the type of the accident that occurred at the accident occurrence point. FIG. The voice correspondence table of FIG. 5 includes data items of “accident type”, “sound data”, and “content”.

  “Accident type” corresponds to “accident type” when accidents are classified by type in the accident table 131. “Sound data” indicates a file path in which sound data is stored. The file specified by this “sound data” corresponds to the sound reproduced when the vehicle on which the driving support apparatus 1 is mounted approaches the accident occurrence point. For example, FIG. 5 shows mp3 (MPEG 1 Audio Layer -3) A file is drawn as an example of sound data.

  “Content” is the content of the reproduced sound, and is the content of the driving support information notified to the driver. For example, when the accident type is “F1” in FIG. 5, the driver is notified of a message such as “You are approaching the point where accidents frequently occur when you turn right. In addition, the notification of the dangerous spot by voice is not performed every time it approaches all accident occurrence points, but is selected based on the driving type specified by the driving tendency of the driver and the driving conditions at that time. This is a feature of this embodiment.

FIG. 6 is a diagram illustrating a data configuration example of the driving tendency table 133 indicating the driving tendency of the driver. The driving tendency table 133 in FIG. 6 includes data items of “driving item ID”, “item”, and “level”.

  “Driving item ID” is an identifier for identifying an item indicating a driving tendency. “Item” indicates an item for analyzing the personality and tendency of the driver appearing during driving. In FIG. 6, as an example, “straight line acceleration”, which means that it is easy to step on the accelerator on a straight road, “long driving”, which means a tendency to drive continuously for a long time, and sudden lane changes. "Sudden steering wheel" that means easy personality, "Sudden brake" that means easy personality, and "Narrow road" that tend to pass through narrow roads as a way to the destination.

  “Level” is a numerical value indicating the degree of driving tendency. In FIG. 6, the level is expressed by five levels, and the higher the numerical value, the easier the driving tendency is. The level is determined according to the number of occurrences of the event corresponding to each item. For example, in the case of the item “straight line acceleration”, the number of events in which the time during which the accelerator is depressed on a straight road lasts for a predetermined threshold (for example, 3 seconds) or longer is stored. The driver is classified as level 2 if up to 15 times, level 3 if up to 15 times, level 4 if up to 20 times, level 5 if up to 20 times or more.

Whether the accelerator is stepped on is a straight road is determined based on the GPS sensor and map information. The time during which the accelerator is depressed is obtained based on a signal input to the sensor signal processing unit 19 via a sensor provided in the accelerator. Thus, the driving assistance device 1 can store the number of occurrences of the event.

  The driving support device 1 can also store the number of occurrences of the event corresponding to each item based on information obtained via the sensor signal processing unit 19 in the same manner as “linear acceleration” for other items. For example, in the case of the item “long driving”, the time from the start to the stop of the engine or the time from the release of the parking gear to the setting of the parking gear in an automatic car exceeds the predetermined time respectively. A determination is made based on the number of times. If the item is “Sudden handle”, the number of events in which the steering wheel is cut at a predetermined angle or more per second. If the item is “Sudden brake”, the time that the brake pedal is depressed continues for a predetermined time or more. If the number of events to be performed and the item “narrow road”, among the roads (links) used from the start to the stop of the engine, the links whose road width is less than the predetermined width are more than a predetermined ratio (for example, 50%) The determination is made based on the number of events that occupy.

  FIG. 7 is a diagram illustrating a data configuration example of the classification table 134 that identifies the type of driver based on the driving tendency illustrated in FIG. 6. The classification table of FIG. 7 includes data items “operation type” and “driving tendency”. The “driving tendency” further includes a lower item whose title is “driving item ID” in the driving tendency table 133.

  “Driving tendency” indicates a threshold for a driving tendency level. For example, in the case of FIG. 7, a driver whose driving item “B1” (linear acceleration) has a level of 4 or more is classified into the driving type “T1”. Similarly, a driver whose driving item “B1” has a level of 3 or higher and whose driving item “B3” (quick steering wheel) has a level of 4 or higher is classified as a driving type “T2”. Then, a driver whose driving item “B2” (long driving) has a level of 4 or more is classified into a driving type “T3”.

  Note that if the driver has a driving tendency as shown in FIG. 6, it corresponds to the driving type “T2” and “T3” in the classification table shown in FIG. 7. In this case, since it is confirmed whether or not the conditions are higher than those in the classification table 134, the driver having the driving tendency shown in FIG. 6 is classified as the driving type “T2”.

  FIG. 8 is a diagram illustrating a data configuration example of a travel condition table 135 indicating travel conditions in a vehicle on which the driving support device 1 is mounted. The travel condition table of FIG. 8 includes data items “travel item ID”, “item”, and “flag”.

  The “travel item ID” is an identifier for specifying an item indicating the travel condition. “Item” indicates an item corresponding to a traveling condition (weather, time, road surface condition, vehicle state, etc.). In FIG. 8, as an example, “night time” indicating that the running time is night, “fog” indicating that the fog is generated and the visibility is poor, “freezing” indicating freezing of the road surface, rain is falling, and the road surface is wet "Rain" indicating that the vehicle has been operating for a predetermined time or longer, "strong wind" indicating that the strong wind has blown the steering wheel, and the load capacity that affects the braking distance. `` Load capacity '' indicating that it is installed, `` Congestion '' indicating that it is involved in traffic jam, `` Fuel '' indicating that fuel is low, `` Tire wear '' indicating that tire wear is progressing, A “check” is drawn indicating that the number of days has passed since the last periodic check and the possibility of failure cannot be excluded.

  “Flag” is flag information indicating whether or not the driving condition is met. “Y” is stored when the driving condition is met, and “−” is stored when the driving condition is not met. These travel conditions are used not only to analyze accidents when the accident table 131 is constructed, but also to notify the driver of accidents that have occurred under conditions close to the current travel conditions.

  In the present embodiment, whether or not the driving condition is met is determined based on information input to the sensor signal processing unit 19 via a sensor that detects the physical state of the automobile. For example, whether or not the item is “night” is determined by whether or not the light is turned on. Of course, you may judge from the timepiece with which a motor vehicle is equipped.

  If the item is “fog”, whether or not the fog lamp is lit, if the item is “freeze”, whether the temperature sensor of the outside air is 0 ° C. or less, and if the item is “rain”, Judged by the presence or absence. The same applies to other items.

  FIG. 9 is a diagram illustrating a data configuration example of a road information table 136 in which road congestion information and restriction information are stored. For example, information on traffic points that are regularly expected to be congested and roads that are scheduled to be regulated are stored in the road information table.

  The road information table of FIG. 9 includes data items “position coordinates”, “link”, and “regulation / congestion flag”. “Position coordinates” is coordinate information for specifying a restricted location or a traffic jam location. “Link” identifies the road to which the restricted location and the traffic jam location belong. The “link” stores an identifier for identifying the link described with reference to FIGS.

  The “regulation / congestion flag” is flag information that identifies whether the point specified by the “position coordinates” is a restriction point or a congestion point. The driving support device 1 can also notify the driver of a traffic jam location and a regulation location together with a dangerous location.

  FIG. 10 is a diagram illustrating a data configuration example of the store information table 137 in which information regarding stores displayed in accordance with the map information is stored. The store information table of FIG. 10 includes data items “position coordinates”, “type”, and “promotion information”.

  “Position coordinates” is coordinate information for specifying the position of a store. “Type” indicates the type of the store. For example, a restaurant, a hospital, a bank, etc.

“Promotion information” indicates advertisement information related to products and services provided at each store. For example, in FIG. 10, promotion information “20% discount is applied in accounting between 2 and 3 o'clock” is drawn at a restaurant. The driving support device 1 can also notify the driver of such promotion information together with the dangerous part.

  Subsequently, an operation in the driving support apparatus 1 of the first embodiment will be described. The driving support device 1 according to the first embodiment analyzes a driver's personality (driving tendency) that appears during driving, classifies the driver into a predetermined type, and detects accidents that have occurred in the past. It classifies according to driving tendency, and executes driving support information provision processing for notifying a dangerous place based on information on accidents that have occurred in the past by another person with the same driving tendency as the user. In the driving support information providing process, the driving support device 1 further classifies accidents that occurred in the past according to the driving conditions (weather, time, road surface condition, vehicle state, etc.) at the time of the accident, The driver is also notified of information on an accident that occurred in a situation that matches the driving conditions.

  FIG. 11 is a flowchart for explaining a driving type analysis process in the driving support device 1 of the first embodiment. The driving support device 1 starts an analysis of the driving tendency of the driver along with the driving start by the driver. First, identification information for identifying the driver is input to the identification unit 14 (S1).

  In step S1, for example, a driver's fingerprint is input as identification information, and the identification unit 14 reads the fingerprint, converts the read fingerprint into image information, and outputs the image information to the control unit 11. Subsequently, the control unit 11 confirms whether the user is a new user (S2). The control unit 11 checks whether the image information of the fingerprint input from the identification unit 14 is already stored in the storage unit 13, and if the matching image information is not stored (S2 Yes), the control unit 11 inputs from the identification unit 14. The image information of the fingerprint to be stored is stored in the storage unit 13 as a new user's fingerprint, and a storage area for storing the driving tendency table 133 for the new input user is secured in the storage unit 13 (S3).

  If the matching image information has already been stored (No in S2), since it is not a new user, the process of step S3 is omitted. When step S3 is completed or omitted, the control unit 11 determines whether the driving operation of the driver matches the conditions set in the items of the driving tendency table 133 (S4).

  The process in step S4 is performed by the control unit 11 based on information input via the sensor signal processing unit 19. For example, if the “condition set in the item of the driving tendency table 133” is the item “linear acceleration” described in FIG. 6, “the time when the accelerator is depressed on a straight road is a predetermined threshold value (for example, 3 Last for more than a second).

  When the conditions set in the items of the driving tendency table 133 are met (S4 Yes), the control unit 11 updates the driving tendency table 133 (S5). For example, as described in FIG. 6, the control unit 11 changes the level and updates the driving tendency table 133 according to the number of events that satisfy the condition shown in step S <b> 4.

  When the driving operation of the driver does not meet the conditions set in the items of the driving tendency table 133 (S4 No), the process of step S5 is omitted. The control part 11 repeats the process of said step S4, S5 regularly until it detects the completion | finish of driving | operation (S6No). When detecting the end of the operation (S6 Yes), the controller 11 ends the operation type analysis process. Based on information input via the sensor signal processing unit 19, the control unit 11 determines that the operation is finished, for example, when detecting the engine stop or the setting of the parking gear.

FIG. 12 is a flowchart for explaining driving support information providing processing in the driving support device 1 of the first embodiment. First, the control unit 11 acquires an operation type (S11). In the process of step S11, the control unit 11 specifies the driver using the driver identification information input in step S1 of the driving type analysis process.

  Then, with reference to the classification table 134, the driving type of the driver is determined from the level of each item shown in the driving tendency table 133 corresponding to the specified driver. The method of determining the operation type is as described in FIG.

  Then, the control part 11 acquires driving conditions (S12). In the process of step S12, as described with reference to FIG. 8, the control unit 11 acquires the traveling condition of the host vehicle based on the information input via the sensor signal processing unit 19, and “ Update "flag".

Further, the control unit 11 acquires the current position (S13). The control unit 11 calculates the current position of the host vehicle based on information from the GPS sensor acquired through the sensor signal processing unit 19. From the information acquired in steps S11, S12, and S13, the control unit 11 is within a first distance from the current position of the host vehicle and is in a dangerous place in a range (for example, 300 m to 2 km) that is equal to or greater than the second distance. It is determined whether there is any (S14).

  In the process of step S14, the control unit 11 searches for a dangerous spot by referring to the accident table 131 from both the driving type acquired in step S11 and the travel condition acquired in step S12. First, the control unit 11 searches for an entry (line data in the accident table 131) where the “driving type” of the accident table 131 is the same as the operation type acquired in step S11, and acquires the “position coordinates”. And the control part 11 determines whether a mutual distance exists in 300m-2km based on the acquired "position coordinate" and the present position acquired by step S13.

  Further, the control unit 11 searches for an entry in which the “travel condition flag” in the accident table 131 matches the “flag” state in the travel condition table 135 acquired in step S12, and acquires the “position coordinates”. And the control part 11 determines whether a mutual distance exists in 300m-2km based on the acquired "position coordinate" and the present position acquired by step S13.

  In step S14, when the dangerous location is 300 m to 2 km from the current position (S14 Yes), the control unit 11 displays a detour that avoids the dangerous location (S15). The control unit 11 recalculates the route for avoiding the dangerous place using the navigation function, and displays it on the display unit 18. Since there is a sufficient distance to the dangerous place and the driver has a margin to change the course, the driving assistance device 1 presents a detour here.

  When the dangerous place is not 300 m to 2 km from the current position (No in S14), the process of step S15 is omitted. When the process of step S15 is completed or omitted, the control unit 11 determines whether there is a dangerous place within 300 m (second distance) from the current position of the host vehicle (S16). The control unit 11 also uses the dangerous part included in the search result in step S14 in step S16.

  When the own vehicle approaches within 300 m to the dangerous place (S16 Yes), the control unit 11 notifies the presence of the dangerous place by sound and image (S17). The control unit 11 acquires the position information of the dangerous place within 300 m from the current position with reference to the accident table 131 and displays the dangerous place on the map displayed on the display unit 18.

In addition, the control unit 11 acquires the accident type of the dangerous place within 300 m from the current position with reference to the accident table 131, refers to the voice correspondence table 132, and reproduces the corresponding voice data from the speaker 17. At the time of step S <b> 17, since a sudden change in the course may cause a new accident, the driving support device 1 only alerts the dangerous location and does not present a detour.

  In step S17, the control part 11 can also provide the promotion information regarding the shop near the present location of the own vehicle with the notification of a dangerous location. In step S17, the danger location is notified by video and audio, but it may be a video only or audio only notification.

  When the process of step S17 is completed, the control unit 11 returns to the process of step S11 and continues the process. Thus, the control unit 11 continuously repeats the driving support information providing process during driving.

  In FIG. 12, step S15 is performed when a route to the destination is set. When the route to the destination is not set, the control unit 11 performs the process of step S17 instead of displaying the detour and notifies the presence of the dangerous place.

  FIG. 13 is a diagram for explaining how driving support information is provided in step S <b> 17 of FIG. 12. The driving support information in the present embodiment is provided by sound reproduced through the speaker 17 and an image and text displayed on the display unit 18.

  FIG. 18 illustrates a state in which the display area 31 of FIG. 2 is displayed on the display unit 18. In the display area 31, a state in which two dangerous places are notified is drawn. One is an arrow 33 indicating a dangerous point based on the driving type of the driver of the automobile drawn by the mark 32 indicating the own vehicle position, and the other is a dangerous point based on the driving condition of the automobile drawn by the mark 32. This is an arrow 34 indicating.

  In this way, the dangerous part is displayed by the arrow, and the corresponding sound is reproduced from the speaker 17. That is, when the vehicle position approaches a dangerous spot, a sound corresponding to the accident type of the dangerous spot (see the accident table 131 in FIG. 4) is reproduced.

  For example, if the danger location of the arrow 33 is the accident type “F1”, the voice correspondence table 132 in FIG. 5 is referred to, “You are approaching the point where accidents frequently occur when turning right. Is played. In addition, “R” indicating a restaurant is also displayed in FIG. 13, and sound for notifying corresponding promotion information (see the store information table 137 in FIG. 10) is reproduced from the speaker 17.

  Thus, in the present embodiment, the control unit 11 functions as an analysis unit that analyzes the driving tendency of the driver and determines the driving type. Further, the control unit 11 identifies the occurrence point of the accident corresponding to the operation type determined by the analysis unit with reference to the accident table, and the occurrence point of the accident corresponding to the operation type is detected by the position detection unit. If the current position is within a predetermined distance from the current position, a sound signal for reproducing the sound of the accident corresponding to the driving type is reproduced on the speaker and / or the accident generating point corresponding to the driving type is notified. It functions as a driving support unit that generates an image signal for displaying an image on the display unit.

  In addition, the control unit 11 functions as a vehicle information unit that detects a traveling condition of the vehicle, specifies an accident occurrence point corresponding to the traveling condition detected by the vehicle information unit with reference to the accident table, and If the location of the accident corresponding to is within a predetermined distance from the current position detected by the position detection unit, a sound signal for reproducing the sound for notifying the location of the accident corresponding to the driving condition on the speaker And / or it functions also as a driving assistance part which produces | generates the image signal for displaying the image which notifies the occurrence point of the accident corresponding to driving | running conditions on a display part.

In the first embodiment, necessary information is stored in the storage unit 13 of the driving support device 1 and the information is updated via the drive unit 15. It can also be set as the structure which adds the communication part which has and receives the newest information from the server connected to the driving assistance apparatus 1 via a communication part. Hereinafter, the configuration will be described as a second embodiment.

  FIG. 14 is a configuration block diagram of the driving support system in the second embodiment. In the driving support system according to the second embodiment, the driving support device 1 and the server 100 are connected in a communicable state.

  A driving support apparatus 1 according to the second embodiment is obtained by adding a communication unit 20 to the driving support apparatus 1 according to the first embodiment. The communication unit 20 has a communication function, processes communication with the outside of the driving support device 1, and is connected to the bus 40 like other functional blocks. The communication unit 20 is realized by, for example, a wireless unit built in the driving support device 1 or a mobile phone connected to the driving support device 1.

In addition, the accident table 131, the road information table 136, and the store information table 137 stored in the driving support device 1 in the first embodiment are stored in the server 100 in the second embodiment. The server 100 is realized by, for example, a PC (Personal Computer) and has a storage function for storing the accident table 131 and the like, an arithmetic processing function by the CPU, and a communication function. When these pieces of information stored in the server 100 are updated, the latest information is provided to the driving support device 1 via the communication unit 20.

  In the second embodiment, the driving type analysis process in the driving support device 1 is the same as that in the first embodiment, and thus the description thereof is omitted. Thus, driving support information provision processing will be described.

  FIG. 15 is a flowchart illustrating driving support information provision processing in the driving support system according to the second embodiment. The second embodiment is different from the first embodiment in that the driving support device 1 transmits the driving type and the driving situation to the server 100 in order to obtain information on the accident table 131 stored in the server 100. . In other processes, the same step numbers are assigned to the same portions as those in the first embodiment, and description thereof is omitted.

  First, the control unit 11 acquires an operation type (S11). As in step S11 of FIG. 12, the control unit 11 specifies the driver, and determines the driving type of the driver from the level of each item shown in the driving tendency table 133 corresponding to the specified driver.

  Then, the control part 11 acquires driving conditions (S12). The control unit 11 acquires the traveling condition of the host vehicle based on the information input via the sensor signal processing unit 19 and updates the “flag” in the traveling condition table 135 as in step S12 of FIG.

Further, the control unit 11 acquires the current position (S13). The control unit 11 calculates the current position of the host vehicle based on information from the GPS sensor acquired through the sensor signal processing unit 19 as in step S13 of FIG.

  When step S13 is completed, the control unit 11 transmits the operation type acquired in step S11 and the travel condition acquired in step S12 to the server 100 via the communication unit 20 (S21). The server 100 refers to the accident table 131 from both the driving type transmitted from the driving support device 1 and the driving conditions, and searches for a dangerous place.

The search for the dangerous spot based on the driving type and the driving condition is processed by the CPU of the server 100 performing the process performed by the “control unit 11” in the process of step S14 of FIG. Then, the server 100 transmits the “location coordinates” and “accident type” of the entry obtained as a search result to the driving support device 1 as the location information of the dangerous location (S22).

  From the position information of the dangerous location received from the server 100 and the position information of the current position acquired in step S13, the control unit 11 is within the first distance from the current position of the host vehicle and is equal to or more than the second distance. It is determined whether there is a dangerous place in the range (for example, 300 m to 2 km) (S14). In step S14, when the dangerous location is 300 m to 2 km from the current position (S14 Yes), the control unit 11 displays a detour that avoids the dangerous location (S15).

  When the dangerous place is not 300 m to 2 km from the current position (No in S14), the process of step S15 is omitted. When the process of step S15 is completed or omitted, the control unit 11 determines whether there is a dangerous place within 300 m (second distance) from the current position of the host vehicle (S16). The control unit 11 also uses the position information of the dangerous place received from the server 100 in step S16.

  When the own vehicle approaches within 300 m to the dangerous place (S16 Yes), the control unit 11 notifies the presence of the dangerous place by sound and image (S17). Further, the control unit 11 refers to the voice correspondence table 132 based on the “accident type” transmitted from the server 100 and reproduces the corresponding voice data from the speaker 17.

  When the process of step S17 is completed, the control unit 11 returns to the process of step S11 and continues the process. Thus, the control unit 11 continuously repeats the driving support information providing process during driving also in the second embodiment.

  In step S21, the control unit 11 may transmit the position information of the current position acquired in step S13. The server 100 refers to the store information table 137 and responds with the received promotion information related to the store near the current location of the vehicle around the current position. Then, also in 2nd Embodiment, the control part 11 can provide the promotion information regarding the shop near the present location of the own vehicle with the notification of a dangerous location.

  In the second embodiment, the driving support device 1 determines the driving type, but the server 100 can also perform this. In that case, the control part 11 acquires a driving tendency based on the information input via the sensor signal processing part 19 in step S11, and transmits to the server 100 together with the traveling conditions and the current position acquired in steps S12 and S13. To do. The server 100 may determine an operation type based on the received driving tendency, and perform the processing after step S22 in the same manner as in the second embodiment.

  When the driving type is determined by the server 100, the driving tendency table 133 and the classification table 134 stored in the storage unit 14 of the driving support device 1 can be stored in the server 100, and the storage unit 14 of the driving support device 1. And the capacity required for the storage unit 14 of the driving support device 1 can be reduced. In addition, by storing information on driving tendency of a large number of drivers in the server 100 and editing / updating such information, the driving support system notifies each driver of a more similar dangerous place. Can do.

  Further, the notification of the dangerous place to the driver is not limited to voice or display. For example, according to the approach of the dangerous part, the steering wheel can be slightly shaken, or the degree of tension and relaxation of the seat belt can be changed to notify the driver.

According to the first and second embodiments described above, the driving tendency (the driver's personality that is not related to the driving technique and appears during driving) and the driving conditions (weather, time, road surface condition, vehicle state, etc.) Based on the above, information on the accident occurrence point (dangerous point) is notified to the driver, and even a driver who has improved driving skills can appropriately grasp the point to be noted. In addition, since the dangerous location is notified based on the driving history of other people who have the same driving tendency and driving conditions as the user, it is possible to appropriately notify the user of the danger that is difficult for the person to notice.

  In the first and second embodiments, the dangerous part is searched from both sides of the driving type and the traveling condition, but even if the dangerous part searched from either one of the conditions is notified to the driver, It is possible to obtain an effect of appropriately notifying the person of the danger that is difficult to be noticed by the person himself / herself.

1 is a configuration block diagram of a driving support device in a first embodiment. It is a figure which shows an example of the map information which a driving assistance device uses. It is a figure which shows the data structural example of map information. It is a figure which shows the data structural example of an accident table. It is a figure which shows the example of a data structure of an audio | voice corresponding | compatible table. It is a figure which shows the data structural example of a driving | running tendency table | surface. It is a figure which shows the data structural example of a classification table. It is a figure which shows the data structural example of a driving condition table | surface. It is a figure which shows the example of a data structure of a road information table. It is a figure which shows the data structural example of a shop information table. It is a flowchart explaining the driving | running | working type analysis process in the driving assistance device of 1st Embodiment. It is a flowchart explaining the driving assistance information provision process in the driving assistance apparatus of 1st Embodiment. It is a figure explaining a mode that driving assistance information is provided. It is a block diagram of the configuration of the driving support system in the second embodiment. It is a flowchart explaining the driving assistance information provision process in the driving assistance system of 2nd Embodiment.

Explanation of symbols

11 control unit, 12 RAM, 13 storage unit, 14 identification unit, 15 drive unit, 16
Input unit, 17 speaker, 18 display unit, 19 sensor signal processing unit, 20 communication unit, 40
Bus, 100 server, 131 Accident table, 132 Voice correspondence table, 133 Driving tendency table, 134 Classification table, 135 Driving condition table, 136 Road information table, 137 Store information table, 151 Map information

Claims (11)

A storage unit that preliminarily includes an accident table associating position information of an accident occurrence point with a driving type obtained by analyzing a driving tendency of a party of the accident,
A position detector for detecting the current position of the vehicle;
An identification unit for identifying a driver of the vehicle;
Analyzing the driving tendency of the driver identified by the identifying unit, and determining the driving type;
The occurrence point of the accident corresponding to the driving type determined by the analysis unit is specified with reference to the accident table, and the specified occurrence point of the accident is a current position detected by the position detection unit A driving support device comprising: a driving support unit that notifies information related to an occurrence point of an accident corresponding to the driving type when the distance is within a predetermined distance. In claim 1,
The driving support unit displays a sound signal for reproducing a sound for notifying the specified accident occurrence point on a speaker and / or an image for notifying the specified accident occurrence point on a display unit. A driving support device that generates an image signal of the vehicle. In claim 1,
The driving support unit includes a detour that avoids an accident occurrence point corresponding to the driving type when the accident occurrence point corresponding to the driving type is within the first distance from the current position on the display unit. An image signal for display is generated, and an accident corresponding to the driving type is generated when an accident occurrence point corresponding to the driving type approaches within a second distance shorter than the current position and the first distance. A driving support device that generates a sound signal and / or a video signal for notifying a point. In claim 1,
The driving support unit further generates a sound signal and / or an image signal for notifying a road regulation situation or a road congestion situation within the predetermined distance from the current position. In claim 1,
The driving support unit further generates a sound signal and / or an image signal for notifying a position of a store located within the predetermined distance from the current position. In claim 5,
The driving support device further generates a sound signal and / or an image signal for notifying promotion information regarding a product or service provided in the store. In claim 1,
In the accident table, the location information of the accident occurrence point is associated with the driving conditions at the time of the accident,
A vehicle information unit for detecting a traveling condition of the vehicle;
The driving support unit identifies the accident occurrence point corresponding to the traveling condition detected by the vehicle information unit with reference to the accident table, and the accident occurrence point corresponding to the traveling condition is the position. A driving support apparatus that notifies information about an accident occurrence point corresponding to the travel condition when the current position detected by the detection unit is within a predetermined distance. A driving support system comprising a driving support device provided in a vehicle and a server connected to be communicable with the driving support device,
The driving support device includes:
A position detector for detecting the current position of the vehicle;
An identification unit for identifying a driver of the vehicle;
Analyzing the driving tendency of the driver identified by the identifying unit, and identifying the driving type,
A communication unit that notifies the server of the operation type specified by the analysis unit, and receives position information of an accident occurrence point transmitted from the server;
The driving support unit for notifying the information about the accident occurrence point when the occurrence point of the accident based on the position information received by the communication unit is within a predetermined distance from the current position detected by the position detection unit. And
The server
A storage unit that includes in advance an accident table that associates the location information of the accident occurrence point with the operation type of the party involved in the accident;
A response unit that refers to the accident table based on the driving type transmitted from the driving support device and transmits position information of an accident occurrence point corresponding to the driving type to the driving support device. Driving support system. A driving support device provided in a vehicle, and an accident table that is connected to the driving support device in a communicable manner, and associates position information of an accident occurrence point with a driving type obtained by analyzing a driving tendency of a party of the accident. A driving support method in a driving support system having a server included in advance,
The driving support device detects a current position of the vehicle;
The driving support device identifies the driver of the vehicle;
The driving support device analyzes a driving tendency of the identified driver to identify a driving type;
The driving support device notifies the server of the specified driving type;
Based on the driving type transmitted from the driving support device, the server transmits position information of an accident occurrence point corresponding to the driving type to the driving support device,
The driving support device receives position information of the accident occurrence point transmitted from the server, and the accident occurrence point based on the received position information is within a predetermined distance from the detected current position. If there is, a driving support method characterized by notifying information on the location of the accident. A storage unit that includes in advance an accident table that associates the location information of the accident occurrence point with the operation type obtained by analyzing the driving tendency of the party involved in the accident, and the location of the accident occurrence point corresponding to the operation type A driving support device communicably connected to a server that responds with position information,
A position detector for detecting the current position of the vehicle;
An identification unit for identifying a driver of the vehicle;
Analyzing the driving tendency of the driver identified by the identifying unit, and identifying the driving type;
A communication unit for notifying the server of the operation type specified by the analysis unit, and receiving position information of the accident occurrence point transmitted from the server;
The driving support unit for notifying the information about the accident occurrence point when the occurrence point of the accident based on the position information received by the communication unit is within a predetermined distance from the current position detected by the position detection unit. A driving support apparatus comprising: A driving support system comprising a driving support device provided in a vehicle and a server connected to be communicable with the driving support device,
The driving support device includes:
A position detector for detecting the current position of the vehicle;
A driving tendency information acquisition unit for acquiring information on the driving tendency of the driver;
A communication unit for notifying the server of information related to the driving tendency and receiving location information of an accident occurrence point transmitted from the server;
The driving support unit for notifying the information about the accident occurrence point when the occurrence point of the accident based on the position information received by the communication unit is within a predetermined distance from the current position detected by the position detection unit. And
The server
Analyzing the driving tendency of the driver based on information on the driving tendency transmitted from the driving support device, and specifying a driving type;
A storage unit that includes in advance an accident table that associates the location information of the accident occurrence point with the operation type of the party involved in the accident;
A response unit that refers to the accident table based on the driving type specified by the analysis unit and transmits position information of an accident occurrence point corresponding to the specified driving type to the driving support device. A featured driving support system.

Images