JP2011034430A - Driving support system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a driving support system that enables a driver to recognize his own habits and improve the habits. <P>SOLUTION: A control unit obtains vehicle information showing the condition of own vehicle during driving and evaluates the vehicle information about predetermined evaluation items, thereby diagnosing driving characteristics (habits) showing the driving operation tendency of the driver. The habits are cumulatively stored so as to set an advice-requiring area that is a predetermined area including the peak value of a habit distribution. If the current diagnostic results are within this area II, that is, if a habit to be improved is repeatedly performed during a driving operation, advice for improving the habit is reported. Further, if the driving characteristics are within an area III, advice praising the driving operation is reported. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a driving support device having a function of giving advice for improving a habit of driving operation of a driver.

  2. Description of the Related Art Conventionally, there has been proposed a driving support device that diagnoses driving characteristics (habits) representing a driving operation tendency of a driver and gives advice for improving the habits. In such a driving support device, the content of the advice is not only accurate and clear, but also the timing of giving the advice is important. In particular, in the case of a driving support device intended for safe driving and fuel-saving driving, the driver is not bothered and the driver can recognize his own habit and improve the habit. It is necessary to give advice at the timing that can be done.

  Therefore, for example, Patent Document 1 stores, for example, travel data at regular time intervals or constant distances, and travel data (vehicle information) of the host vehicle during that period is determined in advance based on a recommended driving method. A driving support device that comprehensively evaluates a driver's habit and gives advice by comparing with a reference value is disclosed. Further, in Patent Document 2, every time a predetermined period or a predetermined condition is satisfied, traveling data is transmitted from the host vehicle to the center side, and a driver's habit is diagnosed by a diagnostic program provided on the center side. A driving support apparatus that generates advice, receives the result, and gives advice to the driver is disclosed.

JP 2000-247162 A JP 2002-319087 A

  However, as in Patent Document 1, a configuration in which a driver's habit is evaluated based on a preset reference value and the advice is given each time it deviates from the reference value may not give appropriate advice. There is. This is because in actual driving, the ratio depending on external factors not attributable to the driver itself is large, and it may be difficult to always continue ideal driving. For example, when a driving action deviates from the reference value (for example, sudden braking, etc.) due to external factors that are not attributed to the driver, such as the trend of pedestrians and other vehicles, the reference value is not understood. If the driver is notified only of the result that the driving operation is out of the range, the driver may feel annoyed with the advice, and the reliability of the advice may be reduced, which may not improve the habit. is there.

  In addition, as in Patent Document 1 or 2, in the configuration in which the driving characteristics are determined based on traveling data for a certain period, the timing at which a driving operation that does not satisfy the reference value and the timing at which advice is actually given are not necessarily required. There is a problem that the driver does not agree and the driver cannot specifically recognize what was wrong.

  The present invention has been made in consideration of the above matters, and the purpose of the present invention is to provide advice at a timing at which the driver can recognize his / her own habit, and to improve the habit of the driver and is recommended. An object of the present invention is to provide a driving support device that can learn how to drive.

  In the driving support device according to claim 1, vehicle information representing the state of the host vehicle is acquired, and by evaluating the vehicle information, an evaluation value indicating suitability of the driving operation is obtained, and the driving operation of the driver during the actual driving is determined. Driving characteristics (characteristics) representing a tendency are diagnosed, advice for improving the evaluation value, that is, advice for improving the characteristic is generated and notified to the driver. At this time, the driving support apparatus cumulatively stores the evaluation values in the storage unit, calculates the frequency distribution of the evaluation values, sets a required advice area that is a predetermined area including the peak value, and the current diagnosis result Is in the advice required area, the driver is notified of the advice.

  According to this configuration, when the driving operation is in the advice required area for the driving operation performed by the driver, that is, when the driver performs the same driving operation a plurality of times, the advice is notified. The driver can recognize the tendency of his / her driving operation, that is, the habit related to his / her driving operation by notifying the advice. Further, by following the notified advice, the driver can improve the habit and can perform a more recommended driving operation (high evaluation value).

  In the driving support device of claim 2, since the advice is notified as advice each time on the condition that the same advice is generated for the diagnosis item a predetermined number of times, the driver is compared with the case where the advice is notified every time. Can reduce the risk of annoying advice.

  According to the driving support device of claim 3, in the state where the condition for executing the advice mode is not established each time the advice is notified, that is, in the state before the same advice is generated a predetermined number of times, the periodic advice mode is set. Since the advice generated by the execution is periodically notified, the driver can recognize the driving operation to be improved. In addition, the expression to notify regularly means to notify at every predetermined timing, for example, every fixed time, every driving | running | working of a fixed distance.

According to the driving support device of the fourth aspect, diagnosis is performed on a plurality of diagnosis items, and advice is notified only on the diagnosis items that should be improved most, so the improvement of the habit that is most effective for safe driving and fuel-saving driving is improved. Can be planned. Further, when a particular habit is improved, advice for improving another habit is notified, so that the habit of the driver can be improved generally.

  In the driving support device according to the fifth aspect, the driving scene indicating the driving situation is determined based on the position of the own vehicle specified by the vehicle position specifying means, and the driving characteristics are diagnosed for each driving scene. It is possible to provide advice according to the driving scene, such as when there is a bad habit when making a left turn, and to improve the habit more appropriately.

  In the driving support device according to the sixth aspect, since the diagnostic item for diagnosing the habit is changed for each driving scene determined by the driving scene determining means, the habit can be diagnosed with higher accuracy.

The figure which shows distribution of the driving | running characteristic by one Embodiment of this invention. Block diagram showing the electrical configuration of the driving support device Flow chart showing the processing flow of the driving support device Diagram showing left turn scene Diagram showing the distribution of driving characteristics of multiple diagnostic items

  Hereinafter, a driving support apparatus according to an embodiment of the present invention will be described with reference to the drawings. The driving support device according to the present embodiment is mounted on a vehicle such as an automobile and improves the driving operation of the driver based on a recommended driving operation mode from the viewpoint of safe driving, fuel-saving driving, and manner driving. Is to provide advice for. In addition, since the driving support device uses the function of the car navigation device, it may be configured as a part of the car navigation device. Note that driving operations for safe driving (for example, driving operations that do not involve sudden acceleration or sudden deceleration) can reduce fuel consumption and are closely related to fuel-saving driving. It is also called a fuel efficiency driving support device.

  FIG. 2 is a block diagram showing an electrical configuration of the driving support device 1. The driving support device 1 is configured with the control unit 2 as a main body. The control unit 2 includes a CPU, a ROM, a RAM, and various interface circuits. A storage unit 3 and a vehicle information acquisition unit 4 are connected to the control unit 2. The control unit 2 is configured to realize a control function to be described later by a program stored in advance, and as a functional block realized by software, a position specifying unit 5, a driving scene determination unit 8, a driving characteristic diagnosis unit 6 The advice generation unit 7 and the advice notification unit 9 are provided. Note that the control unit 2 may be provided exclusively, or may be configured to be shared with a car navigation device (not shown) mounted on the vehicle.

  The storage unit 3 is configured by a large-capacity storage medium such as a CD or DVD reader, an HDD (Hard Disk Drive), or a memory card. The storage unit 3 stores various kinds of information such as map data, intersection information, road type information indicating the distinction between highways and ordinary roads, road gradient information, roads, and the like on read-only storage media such as CDs and DVDs. Various types of information used in well-known car navigation devices, such as position information indicating the position where the vehicle is traveling, such as ground structures, width information indicating the width of the road, link information indicating the road section, etc. I remember it. The storage unit 3 is a readable / writable storage medium such as an HDD or a memory card, for example, various types of information such as vehicle information acquired by a vehicle information acquisition unit 4 to be described later and position information specified by the position specifying unit 5 It can be stored in a cumulative manner.

  The vehicle information acquisition unit 4 includes various sensors and in-vehicle devices for acquiring various types of information representing the state of the host vehicle. These sensors include, for example, a vehicle speed sensor that detects the vehicle speed, an engine speed sensor that detects the engine speed, an acceleration sensor (G sensor) that indicates the acceleration of the vehicle, a gyro sensor that detects the turning speed, and an engine speed. A rotation speed sensor for detecting, an accelerator opening sensor for detecting an accelerator depression amount, a steering sensor for detecting a steering angle, and the like are included. In-vehicle devices include a brake control device that provides a brake signal indicating a brake operation (on / off), a turn signal switch that provides a turn signal indicating a turn signal operation, a shift position signal generation device that indicates a shift position, and a turn signal state. The turn signal signal generator which shows is included. When these sensors and in-vehicle devices are connected to a CAN (Controller Area Network), the output of the sensors and various signals can be similarly acquired through the CAN.

  Further, the vehicle information acquisition unit 4 outputs vehicle information regarding the state of the vehicle acquired by various sensors and vehicle equipment to the control unit 2. The vehicle information acquisition unit 4 is connected to a VICS ((registered trademark) Vehicle Information and Communication System) receiver 11 from a fixed station (not shown) for VICS service located near the road. Road traffic information (for example, accident information and traffic jam information) is acquired.

  A well-known GPS (Global Positioning System) receiver 10 is connected to the control unit 2, and positioning data indicating the current position of the host vehicle received from a GPS satellite (not shown) by the position specifying unit 5, and storage Based on the map data etc. memorize | stored in the part 3, the position on the map of the own vehicle is specified.

  In addition, the control unit 2 determines the driving situation of the host vehicle based on the position of the host vehicle specified by the position specifying unit 5 by the driving scene determination unit 8, map data, vehicle information, and the like stored in the storage unit 3. A driving scene representing is identified. In the driving scene determination unit 8, for example, when a left turn is made at an intersection, a driving scene for each driving situation is specified such as a “left turn scene”. The driving characteristic diagnosis unit 6 evaluates the state of the vehicle with respect to a predetermined evaluation item based on the vehicle information acquired by the vehicle information acquisition unit 4, and diagnoses the driving characteristic (characteristic) indicating the tendency of the driver's driving operation. . The advice generation unit 7 generates advice according to the habit diagnosed by the driving characteristic diagnosis unit 6. An advice generation method will be described later.

  In the advice notification unit 9, the display unit 12 and the sound generation unit 13 are connected to notify the driver of the advice generated by the advice generation unit 7 visually or audibly. The display unit 12 and the sound generation unit 13 may be configured to be shared with a liquid crystal display or a speaker (none of which is shown) provided in a car navigation device or a car audio device.

Next, the operation of the driving support apparatus 1 having the above configuration will be described.
FIG. 3 is a flowchart showing a flow of processing of the driving support device 1 by the control unit 2. When the vehicle starts traveling, the control unit 2 starts acquiring vehicle information (S1). The control unit 2 acquires vehicle information such as vehicle speed from the above-described various sensors and in-vehicle devices via the vehicle information acquisition unit 4, and maps the host vehicle based on the map data stored in the storage unit 3. The upper position is acquired, and the vehicle information of the host vehicle 14 acquired by the position specifying unit 5 and the position on the map are associated and stored in the storage unit 3. Thereby, the storage unit 3 cumulatively stores the route on which the host vehicle 14 has traveled and the vehicle information when traveling on the route.

  Then, the control part 2 determines a driving scene by the driving scene determination part 8 (S2). For example, when the position of the host vehicle 14 is T2, as shown in FIG. 4, the control unit 2 stores the vehicle information stored in the storage unit 3 and the map stored in association with the vehicle information. The driving scene is determined based on the position. More specifically, the control unit 2 determines whether the road at the current position T2 is different from the road at the past position T1 based on the map data, and further, the host vehicle 14 from the position T1 to T2 When a series of driving operations such as a brake operation, a blinker instruction, a steering wheel operation, and an accelerator operation is stored as vehicle information while the vehicle moves, it is determined that the driving scene is a “left-turn scene” in which an intersection is turned left.

  When the determination of the driving scene is completed, the control unit 2 evaluates the acquired vehicle information based on the evaluation criteria set in advance for each evaluation item by the driving characteristic diagnosis unit 6, and indicates an evaluation value indicating whether or not the driving operation is appropriate. Ask for. This evaluation value is a value indicating how much the driver's driving operation is suitable for the recommended driving, and in this embodiment, is an evaluation value for a maximum score of 10 as will be described later. Based on this evaluation value, the control unit 2 diagnoses a habit (driving characteristic) representing the tendency of the driving operation of the driver (S3). At this time, the control unit 2 performs a habit diagnosis for each driving scene determined in step S2. For example, when the driving scene is a left turn scene, the following diagnosis items are diagnosed.

(A) Winker diagnosis (B) Intersection approach speed + deceleration diagnosis (C) Turning angular speed diagnosis (D) Intersection exit speed + acceleration diagnosis The control unit 2 (A) Was the winker operation instruction given in the winker diagnosis? The evaluation items such as how many meters before the intersection are evaluated are evaluated with a maximum of 10 points, and the evaluation value of the current driving operation is determined. Similarly, evaluation values are determined for predetermined evaluation items for the other (B) to (D). At this time, the evaluation item for each diagnosis item and its evaluation standard are set differently for each driving scene. For example, even if the traveling state is the same “move to the left”, the traveling state differs greatly depending on whether the vehicle has made a left turn at the intersection or has entered the introduction road (ramp) of the expressway to the left. Therefore, the control unit 2 employs different diagnosis items, evaluation items, and evaluation criteria for each driving scene.

  When the habit diagnosis ends, the control unit 2 stores the current diagnosis result in the storage unit 3 in association with the driving scene (S4). At this time, the control unit 2 may store cumulatively as long as the storage capacity of the storage unit 3 permits, or sets a maximum value of the storage capacity for storing the diagnosis result, for example, stores the past several months You may make it do.

  Subsequently, the control unit 2 uses the advice generation unit 7 to generate advice for improving the habit of the habit diagnosed this time (S5). For example, in the (A) winker diagnosis in the left turn scene, the following clear and simple advice sentence is stored.

1 to 2 evaluation values: “The blinker instruction is basically 30m before the intersection”
Evaluation value is 3 to 5 points: “Let's give instructions 10m before”
Evaluation value is 6-8 points: “Let's give instructions 5m before”
Evaluation value is 9-10 points: “There is a blinker in front of you”
As described above, the control unit 2 generates advice by selecting one corresponding to the evaluation value from the advice sentences stored in the storage unit 3 or the like in advance for each diagnosis item.

  Subsequently, after the advice is generated, the control unit 2 determines whether or not the number of generations of the same advice is equal to or more than the specified number (S6). In the present embodiment, the specified number of times is set to about 4 to 5 times, for example.

  When the same advice is not more than the prescribed number of times (S6: NO), the control unit 2 determines whether or not a predetermined period has elapsed since the previous advice was notified (S7). This is because if the advice is notified each time a habit is diagnosed, the driver feels bothered and he / she hears the advice secondly, which may reduce the effectiveness of the advice. . For this reason, in the present embodiment, after a predetermined period of time has elapsed since the time when the previous advice was notified, such as traveling for a certain distance (S7: YES), the advice notification unit 9 causes the display unit 12 and voice to be displayed. The driver is notified visually or acoustically through the generator 13 (S8).

  As described above, in the driving support device 1, the advice is usually given in the regular advice mode in which the advice is notified without causing the driver to feel a burden. If the predetermined period has not elapsed (S7: NO), the process directly returns to step S1 so as not to burden the driver.

  By the way, in order to improve the habit of the driver, it is important that the content is appropriate, but it is also important to give advice at a timing when the driver recognizes his habit. Therefore, in the driving support device 1 of the present embodiment, when the same advice has exceeded the specified number of times, that is, when the condition for shifting to the advice mode is satisfied each time (S6: YES), the driving operation is performed. Whenever advice is given, it shifts to the advice mode. In this advice mode each time, it is first determined whether or not the diagnosis result of this time is within the advice required area that requires advice (S9).

  FIG. 1 is a diagram showing a habit frequency distribution of the above-described (A) blinker diagnosis. The graph G1 shows the actual frequency distribution of habits, and the peak value is at the position of 4 points. That is, it is indicated that this driver has a habit of (A) an evaluation value of 4 points in a driving scene (for example, a left turn scene) in which a winker diagnosis is performed. In this case, the driving characteristic diagnosis unit 6 includes a region II having a predetermined width including peak values (four positions), a region I having a lower evaluation value than the region II, and a region III having a higher evaluation value than the region II. The area is calculated based on the frequency distribution. And the driving | running characteristic diagnostic part 6 sets the area | region II and the area | region III to an advice required area | region among these some area | regions.

Here, the advice required area will be described in detail.
The control unit 2 sets the region I, that is, the region where the evaluation value of the driving operation is lower than the peak value, as a region where the advice is not notified. This is because even if the evaluation value of the driving operation diagnosed this time is low, the driving operation is considered to be an exceptional one far from the normal driving operation (region II) of the driver. During actual driving, the driving operation of the driver may depend not only on his / her own habit but also on external factors such as the state of other vehicles. For example, when there is a sudden interruption of another vehicle or a pedestrian jumping out, the driver may apply a sudden brake. In such a situation, if you give advice such as "Let's stop sudden braking" based only on the fact that sudden braking (driving operation with a low evaluation value) has been made, the driver will avoid an accident. In spite of sudden braking, the wrong advice is reported.

  In other words, when a driving operation is performed in which the evaluation value deviates significantly from the peak value, the driver gives advice based on the evaluation value alone without understanding the cause of the driving operation. There is a risk that the reliability of the advice function may be reduced. Therefore, for driving operations that do not fall within the normal driving characteristics, that is, the habit history stored in the storage unit 3 and do not enter the advice-needed area (S9: NO), at least advice regarding the driving operation is notified. Instead, the process returns to step S1.

  On the other hand, the driving characteristic diagnosis unit 6 sets the area II as an area requiring advice that requires advice for the driver. For example, if the current diagnosis result is in the region II, it means that the driver is performing a normal driving operation. At this time, if the peak value is 4 points as shown in the graph G1 in FIG. 1, the driver's habit can be improved as indicated by the broken line G2 by giving advice. Conceivable. Therefore, the driving characteristic diagnosis unit 6 sets the area II as an advice required area.

  In addition, when the current diagnosis result is in the area III, for example, by giving advice that gives up the driver's driving operation such as “I am driving well”, the driver is given safe driving and fuel-saving driving. Can be made aware of. For this reason, the driving characteristic diagnosis unit 6 also sets the region III as the advice required region.

  By the way, when diagnosing the driving characteristic at the time of a left turn, as described above, there are a plurality of diagnostic items such as (A) to (D). At this time, since the evaluation items are different for each diagnosis item, there are a plurality of distributions of driving characteristics as shown in FIG. In this case, the control unit 2 uses the driving characteristic diagnosis unit 6 to specify the diagnosis item having the lowest peak value ((A) in FIG. 5) among the plurality of distributions as a necessary improvement item for performing the advice. In other words, the driving support device 1 does not give advice on all of the plurality of diagnostic items, but has a diagnostic item with the lowest peak value, in other words, a diagnostic item that is judged to have the greatest effect on safe driving and fuel-saving driving. Identify items that need improvement.

  If the improvement required item is specified and the control unit 2 determines that the current driving characteristic is in the advice required region (S9: YES), the control unit 2 notifies the advice (S8) and returns. Thereby, when the driver repeats a specific driving operation, the driver can recognize his / her habit by notifying the advice immediately after the driving operation is performed. In this case, the control unit 2 notifies the display by displaying the content of advice on the display unit 12 or by outputting from the sound generation unit 13. In addition, you may alert | report using both the display part 12 and the audio | voice generation part 13. FIG.

  The control unit 2 resets the number of generations of the same advice every time the advice is notified in the advice mode. Thus, the advice is notified in the regular advice mode until the generation of the same advice reaches the specified number of times again.

  As described above, according to the present embodiment, by executing the periodic advice mode for periodically providing advice, while reducing the mental burden such as annoyance to the driver as much as possible, safe driving / saving Appropriate advice for fuel efficient driving can be given. Further, since the advice to be notified is for improving the evaluation value, that is, for improving the habit, the driver can improve the habit by following the advice.

  The control unit 2 is provided with an advice mode every time the same advice for the same diagnosis item is generated a plurality of times, and the advice is notified immediately after the advice is generated, that is, immediately after the driving operation. Therefore, advice can be notified at a timing at which the driver can be aware of his / her own habit.

  In the advice mode each time, the advice is not notified to the control unit 2 when the diagnosis result is in the region I. Thereby, even if the driving operation is far from the normal state of the driver due to an external factor, the driver does not feel uncomfortable. In addition, since the advice required area is set, and the current driving operation is not in the advice required area, the advice is not notified. Can be recognized.

  Since the driving scene indicating the driving situation is determined based on the position of the host vehicle 14 specified by the position specifying unit 5 and the driving characteristics are diagnosed for each driving scene, there is a bad habit when turning left at an intersection, for example. The advice according to the driving scene can be implemented, and the habit can be improved more appropriately.

  Since the control unit 2 diagnoses a plurality of diagnosis items and only advises about the diagnosis items that should be improved most, the improvement of the habit most effective for safe driving and fuel-saving driving can be achieved. Further, when a particular habit is improved, advice for improving another habit is notified, so that the habit of the driver can be improved generally.

Since the diagnostic item for diagnosing habit is changed for each driving scene determined by the driving scene determination unit 8, the habit can be diagnosed more accurately.
Since the content of the advice is concise and clear, the driver can be made to recognize exactly which driving operation was bad.

(Other embodiments)
The present invention is not limited to the embodiment described above, and can be applied to various embodiments without departing from the gist thereof.

  The diagnosis items, evaluation items, evaluation criteria, and the like described in the embodiment are merely examples, and each item is not limited thereto. Further, the content of the advice can be appropriately set according to the diagnosis item. For example, driving scenes include driving scenes such as straight driving at intersections, lane changes, overtaking / passing roads, hills, high-speed driving, etc., parking (garage entry, parallel parking), parking stops, etc. A driving scene can be considered. Alternatively, as an evaluation standard, a standard related to driving operation, laws, manners, energy saving (fuel saving), and the like can be considered.

  For driving operations that violate laws and regulations, a warning may be immediately notified regardless of the regular advice mode or the advice mode each time. For example, there is a case where a winker instruction is not issued when making a right or left turn at an intersection or a speed violation.

Driver identification means that can identify the driver may be provided in the driving support device, and the driving characteristics for each driver may be diagnosed.
Operation accepting means for accepting the operation of the driver may be provided so that the driver can check the advice (advice other than the items requiring improvement) that was not notified.

  When the advice is notified in the area II, the advice for the driving operation to be improved may be notified after the advice for giving a good driving operation is performed. As a result, the driver can accept the advice without being offended, and the driving operation can be further improved.

  Also in the area III, advice for improving the habit of other items may be notified together. For example, by adding advice to improve at the timing of advice to give up, such as “I am good at XX, let's improve △△△ next time”, the driver's consciousness about improving habits You may make it raise. In this way, if an advice to be improved together with an advice to be given up is notified, a positive attitude toward the advice can be brought about.

  When the driving operation is improved for the diagnostic item that has notified the advice (when the distribution peak is improved from P1 to P2 in FIG. 1), that fact may be notified. As a result, it is recognized that the driving support apparatus properly evaluates the driving operation, and the driver's confidence in the advice can be improved.

  When generating advice, the advice corresponding to the evaluation value is selected from the advices prepared in advance, but the main words are registered, and the words are combined in association with the driving information. It may be.

  The evaluation points are divided into a plurality of ranges, and the same advice is generated within the ranges, but different advice may be generated for each evaluation point according to the traveling scene. Thereby, more detailed advice can be notified.

  The specified number of times, which is a condition for shifting to the advice mode each time, may be a predetermined fixed value or may be set by the driver himself. Further, for example, when the habit is not improved, it may be configured to increase / decrease according to the driver's habit improvement state, such as decreasing the specified number of times to increase the number of notifications.

  In the advice mode each time, the driver is notified of the advice immediately after performing the driving operation targeted for the advice. For example, the timing of notifying the advice such as notification within a predetermined time from the driving operation, etc. You may change according to.

As a condition for shifting to the advice mode each time, a case where the same or similar driving scene is determined a predetermined number of times may be added.
When the advice is notified every time in the advice mode, the number of generations of the same advice is reset. However, it may not be reset. As a result, the number of times the advice is notified to the habit that is repeatedly performed (no improvement trend is seen) despite the advice being notified in the advice mode each time increases, and the habit can be improved. it can.

  In addition to the regular advice mode, a mode for notifying advice for each driving scene may be added. Further, a mode in which the regular advice mode is not executed may be provided.

  In the drawings, 1 is a driving support device, 3 is a storage unit (storage unit), 4 is a vehicle information acquisition unit (vehicle information acquisition unit), 5 is a position specifying unit (vehicle position specifying unit), and 6 is a driving scene determination unit ( Driving scene determination means), 7 is a driving characteristic diagnosis section (driving characteristic diagnosis means), 8 is an advice generation section (advice generation means), 9 is an advice notification section (advice notification means), and 12 is a display section (advice notification means). , 13 is a voice display unit (advice notification means).

Claims (6)

Vehicle information acquisition means for acquiring vehicle information representing the state of the host vehicle;
By evaluating the vehicle information acquired by the vehicle information acquisition means, an evaluation value indicating the suitability of the driving operation is obtained, and driving characteristics representing the tendency of the driving operation of the driver with respect to a predetermined diagnosis item are obtained based on the evaluation value. Driving characteristic diagnosis means for diagnosing;
Advice generating means for generating advice for improving the evaluation value of the driving characteristic diagnosed by the driving characteristic diagnosing means;
In a driving support device comprising advice notifying means for notifying the advice generated by the advice generating means,
Storage means for storing the evaluation value related to the driving characteristics diagnosed by the driving characteristics diagnosis means;
The driving characteristic diagnosis means calculates a frequency distribution of the evaluation values stored in the storage means, sets a required advice area that is a predetermined area including a peak value of the frequency distribution,
The advice notifying means notifies the advice when the current driving characteristic diagnosed by the driving characteristic diagnosing means is within the advice required area after the advice required area is set. Support device.   The advice notifying means notifies the advice generated by the advice generating means as advice each time on the condition that the same advice has been generated a predetermined number of times for the diagnostic item. The driving support device according to 1.   3. The advice notifying unit periodically notifies the advice by executing the periodic advice mode in a state where the condition for executing the advice mode is not satisfied each time the advice is notified. The driving assistance apparatus as described. The driving characteristic diagnosing means performs diagnosis for a plurality of diagnostic items, specifies an improvement item that is a diagnostic item that should improve the driving characteristics most among the diagnostic items,
The driving assistance apparatus according to any one of claims 1 to 3, wherein the advice notifying unit notifies an advice for the improvement required item specified by the driving characteristic diagnosis unit. Vehicle position specifying means for specifying the position of the host vehicle;
A driving scene determining unit that determines a driving scene indicating a traveling state of the host vehicle based on the position of the host vehicle specified by the vehicle position specifying unit and the vehicle information acquired by the vehicle information acquiring unit;
5. The driving support apparatus according to claim 1, wherein the driving characteristic diagnosis unit diagnoses the driving characteristic for each driving scene determined by the driving scene determination unit.   The driving support apparatus according to claim 5, wherein the driving characteristic diagnosis unit changes a diagnosis item for diagnosing the driving characteristic for each driving scene determined by the driving scene determination unit.

Images