JP5220444B2 - Driving advice device - Google Patents

Description

  The present invention relates to a driving advice device that is mounted on a vehicle or a driving simulation device for a vehicle and that provides advice for improving the driving skill of the driver.

  Conventionally, there has been proposed a navigation system that presents danger notice information when the vehicle approaches a dangerous place that is set in advance based on accident statistics information or the like.

  Such a system provides information that the traffic environment is dangerous regardless of the driving behavior of the individual driver, and it cannot be expected that the bad habit of driving the individual driver will improve.

  On the other hand, an in-vehicle driving diagnosis device (drive recorder) for diagnosing the quality of driving behavior based on vehicle behavior such as vehicle running speed, acceleration / deceleration, and angular velocity has also been proposed. This type of driving diagnostic device mainly evaluates the smoothness of movement and overspeed among the driving behaviors of individual drivers, and changes the driving behavior to the driver by feeding back the evaluation results to the driver after driving. Can be expected.

  Conventionally, in Patent Document 1, in order to assist the user's driving based on the evaluation result of the user's driving operation technique, a road that is assumed to be difficult to drive is registered in advance, and the registered road is calculated in the route calculation. It has been proposed to calculate and guide routes that do not pass through.

  Patent Document 2 proposes to determine a travel route according to an individual driving load and a driving difficulty level in order to select and guide an optimum route according to the characteristics of the driver.

  Further, in Patent Document 3, in order to evaluate whether or not the vehicle travels properly and contribute to the improvement of driving technology, a comparison is made between the travel data at the current position of the vehicle and the reference data for warning. It is proposed to warn and store the warning contents when the vehicle is necessary, and to read the warning contents and perform a comprehensive evaluation and display the evaluation result when the vehicle reaches the destination.

  In Patent Literature 4, in order to efficiently detect the dangerous behavior of the vehicle and analyze the driver's operation tendency for each driver, the actual vehicle behavior detection result is recognized as the dangerous behavior. It has been proposed that only information related to behavior that conforms to the condition pattern is recorded for each dangerous behavior and can be statistically analyzed as compared with the condition pattern for this purpose.

  Furthermore, in Patent Document 5, in order to provide optimal danger information based on the driving skill of the driver, when the acceleration of the current vehicle is detected by the G sensor and the detected acceleration is greater than a predetermined threshold, It has been proposed to memorize the point as a dangerous point and display the dangerous point on the display and alert the driver when the vehicle approaches the point within a predetermined reference distance. Yes.

According to Patent Document 6, in order to give a warning to a traveling driver before passing a point where a speed excess is likely to occur, a speed excess position on the travel route is determined when each driver exceeds a speed to be observed. When the vehicle is registered and travels on the same road after the next time, a warning is given if it is a predetermined distance before the registered overspeed position.
JP 2004-170347 A JP-A-10-253379 Japanese Patent Laid-Open No. 9-7087 JP 2000-185676 A JP 2001-82966 A JP 2003-130653 A

  In the techniques described in Patent Documents 1 and 2, since the route that matches the driving technique of the driver is guided, the driving technique cannot be improved.

  In the techniques described in Patent Documents 3 and 4, the driving evaluation result is provided to the driver after traveling, and a method for presenting information in advance is not described.

  The technologies described in Patent Documents 5 and 6 are devices that give a warning warning before passing a point where the driver is likely to overspeed, but only for overspeed, to correct the driving habits of the driver in general driving operation. Information cannot be provided.

  An object of the present invention is to provide a driving advice device that can prevent inappropriate driving behavior.

According to a first aspect of the present invention, there is provided a detecting means for detecting information related to driving behavior, a specifying means for acquiring current position information and map information around the current position to specify a current traffic scene of the vehicle, and the detecting means. Based on the detected driving behavior information and the traffic scene specified by the specifying means, driving evaluation means for performing driving evaluation, and results of driving evaluation by the driving evaluation means are stored for each traffic scene as evaluation information. The evaluation storage means, the current position information , the map information around the current position and the information indicating the route selection tendency are acquired, the estimation means for estimating the next traffic scene of the vehicle, and the traffic scene estimated by the estimation means Reading means for reading out evaluation information indicating driving evaluation from the evaluation storage means, and advice information for storing advice information set in advance according to the evaluation information When the evaluation indicated by the evaluation information read by the memory means and the reading means is lower than a preset evaluation, the evaluation information is determined before reaching the traffic scene estimated by the estimation means. Presentation control means for reading the advice information from the advice information storage means and presenting the advice information to the presentation means.

  According to the invention of claim 1, an inappropriate driving action is caused by predicting a place where an inappropriate driving action may be caused due to a low driving skill level and presenting advice information in advance. Can be prevented.

  The driving advice device according to claim 1 may further include a current position detecting unit that detects the current position of the vehicle and outputs current position information, as described in claim 2.

  According to a third aspect of the present invention, in the driving advice device according to the first or second aspect, the detection means detects a driving operation on the vehicle by the driver as information on the driving behavior.

  According to a fourth aspect of the present invention, in the driving advice device according to the first or second aspect, the detecting means detects at least one of the face direction and the line-of-sight direction of the driver as information relating to the driving behavior.

  According to a fifth aspect of the present invention, in the driving advice device according to any one of the first to fourth aspects of the present invention, the presentation control means is configured to provide advice information via the presentation means at a timing when the vehicle is in a specific traffic scene. If it overlaps with the timing to reach, the presentation timing of the advice information is delayed.

  According to the invention of claim 5, it is possible to reduce the possibility of causing inappropriate driving behavior by presenting advice information.

A sixth aspect of the present invention is the driving advice device according to any one of the first to fourth aspects, wherein the presentation control means has a timing when the advice information is presented via the presentation means, and the vehicle has a specific traffic scene. If the overlap timing leading to stops the Hisage shown of the advice information.

  According to the invention of claim 6, it is possible to reduce the possibility of causing inappropriate driving behavior by presenting advice information.

  A seventh aspect of the present invention is the driving advice device according to any one of the first to sixth aspects, wherein the map information includes at least one of a road type and traffic environment information and a road shape.

  According to the invention of claim 7, the specification or estimation of the traffic scene is subdivided, and advice information can be presented more accurately.

  According to the present invention, it is possible to prevent improper driving behavior by predicting a place where improper driving behavior may occur due to low driving skill level and presenting advice information in advance. it can.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 schematically shows the configuration and functions of a driving advice device 10 according to the present embodiment. As shown in the figure, the driving advice device 10 includes an information presentation device 22 that presents various information to the driver, a driving evaluation device 30 that evaluates the driving skill level and safety of the driver, and an information presentation device. And a presentation control device 40 that controls the presentation of information related to driving evaluation by 22.

  In addition to the display device that displays information as an image, the information presentation device 22 includes a speaker that presents information by sound, a light, an LED, and the like, and these may be used alone or in combination.

  The driving evaluation device 30 includes a driving action specifying unit 32, an evaluation unit 34, a driving norm database (DB) 36, and a traffic scene specifying unit 38. Further, the driving action specifying unit 32, the driving rule DB 36, and the traffic scene specifying unit 38 are connected to the evaluation unit 34, respectively.

  The driving advice device 10 includes a line-of-sight measurement device 50 and a vehicle sensor 52, and the line-of-sight measurement device 50 and the vehicle sensor 52 are connected to the driving action specifying unit 32.

  The line-of-sight measurement device 50 includes a camera (not shown) provided in the vicinity of the driver's seat and an analysis device that analyzes the video of the camera. The line-of-sight measurement device 50 captures a driver's face with a camera and performs image processing with an analysis device to extract features such as the driver's eyes and nose. The line-of-sight measurement device 50 measures the direction of the line of sight based on the relationship between the position of the extracted feature portion on the image and the installation position of the camera, the amount of displacement of the position of the extracted feature portion on the image, and the like. . On the other hand, the vehicle sensor 52 detects the steering wheel operation amount, the vehicle speed, the acceleration, the accelerator opening, the brake operation amount, and the like, and outputs them as detection values for specifying the vehicle state and the driver operation state.

  The driving action specifying unit 32 specifies the driving action by the driver based on the line-of-sight measurement result output from the line-of-sight measurement device 50 and various detection values output from the vehicle sensor 52. In addition, driving behavior information indicating the driving behavior specified by the driving behavior specifying unit 32 is output to the evaluation unit 34.

  The driving advice device 10 includes a position detection device 54 and a map DB 56, and the position detection device 54 and the map DB 56 are each connected to the traffic scene specifying unit 38. The position detection device 54 detects the current position of the vehicle and outputs the detection result to the traffic scene specifying unit 38 as position information. The position detection device 54 is a device that receives radio waves from satellites using GPS (Global Positioning System) and identifies a current position, or a device that receives radio waves transmitted from a beacon and identifies the current position. In addition, there are various devices such as a device that detects geomagnetism and identifies the current position. Moreover, you may use combining these apparatuses. The map DB 56 stores map information including road shapes as electronic information. In addition, as information regarding the road shape held in the map DB, for example, an intersection, a curve, and the like can be given. In addition to the road shape, road types (city roads, highways, mountain roads, etc.), the number of lanes, regulatory information (restricted speed, one-way traffic, temporary stops, signals, etc.) are included as appropriate.

  The traffic scene specifying unit 38 reads the map information around the current position from the map DB 56 based on the position information output from the position detecting device 54, specifies the current traffic scene, and evaluates the evaluation unit 34 as traffic scene specifying information. Output to. Examples of traffic scenes include intersections, right turns, left turns, and lane changes.

  Further, in the driving rule DB 36, information indicating driving behavior when the driver performs safe driving is stored as driving rule information for each type of traffic scene. The driving norm information includes speed, operation amount and timing of pedals and accelerators, a line-of-sight direction, and the like.

  In the evaluation unit 34, the driving rule information corresponding to the traffic scene specifying information output from the traffic scene specifying unit 38 is read from the driving rule DB 36, and the read driving rule information and the driving behavior information output from the driving behavior specifying unit 32 are read. And the driver's driving evaluation is executed. The driving evaluation can be performed using various methods. For example, the evaluation is performed in a plurality of stages so that the higher the degree of coincidence between driving norm information and driving behavior information (or the lower the deviation degree), the higher the evaluation. An evaluation method can be given.

  The driving advice device 10 includes a personal evaluation DB 60, and the driving evaluation results by the evaluation unit 34 are sequentially accumulated and stored for each driver.

  On the other hand, the presentation control device 40 includes a traffic scene estimation unit 42, a presentation information generation unit 44, and a presentation content storage unit 46. The traffic scene estimation unit 42 and the presentation content storage unit 46 are connected to the presentation information generation unit 44, respectively. Moreover, the traffic scene estimation part 42 is connected to the position detection apparatus 54 and map DB56 which were mentioned above, and is comprised so that the present driving | running | working position of a vehicle can be specified.

  Furthermore, the driving advice device 10 includes a route information holding unit 58, and holds information related to route selection of the vehicle on which the driving advice device 10 is mounted. The route information holding unit 58 is connected to the traffic scene estimation unit 42. In addition, as information regarding route selection, information indicating past travel history, information indicating a route selection tendency learned according to the travel history, route designation information designated by a driver or the like can be applied.

  The traffic scene estimation unit 42 identifies the current travel position, reads the route information from the route information holding unit 58, and predicts the route, thereby estimating the next traffic scene. The traffic scene estimation unit 42 outputs traffic scene estimation information indicating the estimated traffic scene to the presentation information generation unit 44.

  In addition, in the presentation content storage unit 46, notes for the driver for each traffic scene are stored in advance. Note that a plurality of notes stored in the presentation content storage unit 46 may be stored according to the driving evaluation.

  The presentation information generation unit 44 is also connected to the above-described personal evaluation DB 60, and needs to read out the driving evaluation result in the traffic scene according to the traffic scene estimation information output from the traffic scene estimation unit 42 and present advice information. It is determined whether or not. The presentation information generation unit 44 reads the presentation content from the presentation content storage unit 46 when advice information needs to be presented, and generates data that can be presented by the information presentation device 22 based on the read presentation content. It generates as advice information and outputs it to the information presentation device 22. In addition, in the presentation information generation part 44, when the some notes according to driving | running evaluation are stored in the presentation content storage part 46, the cautions based on a traffic scene and driving evaluation are read as presentation content.

  The operation of the present embodiment will be described below.

  In the driving advice device 10, when the power is turned on, the driving evaluation process and the presentation control process are executed every predetermined time (for example, 5 msec).

  FIG. 2 is a flowchart showing the flow of the driving evaluation process executed in the driving advice device 10. Hereinafter, the driving evaluation process according to the present embodiment will be described with reference to FIG.

  First, in step 100, the traffic scene where the driving action specified in step 100 is performed is specified based on the map information and the current position information, and then the process proceeds to step 102, where the line-of-sight measurement device 50 and the vehicle sensor Based on the output of 52, the driving behavior of the driver is specified.

  The traffic scene is identified by adding the road type (number of intersections, curves, straight lines, etc.) of the road indicated by the map information of the position indicated by the current position information, the number of roads, the number of lanes, regulatory information, etc. .

  In the next step 104, the driving rule information in the traffic scene specified in step 102 is read, and then the process proceeds to step 106, where the read driving rule information is compared with the specified driving action, and then in step 108. Migrate to

  In step 108, driving evaluation is derived according to the degree of coincidence between driving norm information and driving behavior, and then the process proceeds to step 110. For example, the driving evaluation may be performed on the entire driving behavior, or the evaluation on the driving behavior may be divided into an evaluation on the line-of-sight direction and an evaluation on the vehicle trend, and may be evaluated individually. Moreover, the evaluation regarding the trend of the vehicle may be evaluated in detail by dividing into brake operation, accelerator opening, steering wheel operation,.

  In step 110, the evaluation results are stored by being stored in the personal evaluation DB 60, and then the driving evaluation process is terminated. When storing the evaluation results in the personal evaluation DB 60, the evaluation results may be stored as they are as an evaluation history, or the previous evaluation results are corrected with the latest evaluation results as the driving skill improves. You may make it do.

  FIG. 3 is a flowchart showing the flow of the presentation control process executed in the driving advice device 10. Hereinafter, the presentation control process according to the present embodiment will be described with reference to FIG.

  First, in step 120, a traffic scene is estimated, and in the next step 122, personal evaluation information about the estimated traffic scene is read from the personal evaluation DB 60. Here, the traffic scene is estimated based on the traveling position of the vehicle specified based on the current position information and the map information, and the route information held in the route information holding unit 58.

  In the next step 124, it is determined whether or not the read personal evaluation information is equal to or less than a predetermined evaluation set in advance. If the determination is affirmative, the process proceeds to step 126. On the other hand, if the determination in step 124 is negative, it is determined that presentation of advice is unnecessary, and the presenting control process ends.

  The predetermined evaluation in step 124 may be configured so as not to be changed by a preset evaluation, or may be configured such that the driver or the like can repeatedly reset the predetermined evaluation.

  In step 126, the presentation content corresponding to the personal evaluation information is read from the presentation content storage unit 46, and then the process proceeds to step 128. In step 128, advice information is generated and output to the information presentation device 22, and then the presenting control process is terminated. Note that the advice information is information corresponding to the information presentation device 22. For example, if the information presentation device 22 is a display device, display information indicating the content of presentation is generated, and the information presentation device 22 is an audio reproduction device. For example, voice data indicating the presentation content is generated. Further, when a plurality of information presentation devices 22 are provided, a plurality of pieces of advice information are generated.

  As described above, according to the present embodiment, the traffic scene estimation unit 42 acquires the current position information and map information around the current position to estimate the next traffic scene of the vehicle, and the presentation information generation unit 44. In the case where the driving skill level indicated by the evaluation information in the estimated traffic scene is lower than the preset evaluation, advice corresponding to the evaluation information is provided via the information presentation device 22 before reaching the estimated traffic scene. Since information is presented, inappropriate driving behavior can be prevented.

  The configuration of the driving advice device 10 according to the above embodiment is an example, and can be appropriately changed without departing from the gist of the present invention.

  For example, in the above embodiment, the driving advice device 10 has been described as including a driving evaluation device, other sensors, and a database. However, the present invention is not limited to this, and the presentation control device 40 is configured. Can be connected to an existing driving evaluation device or a car navigation system, and various information can be acquired from each device or system to present advice information.

  Also, a function for turning on / off the advice information presenting function may be provided so that the driver can instruct or reject the execution of the function.

  FIG. 4 is an explanatory diagram of an example of a computer program, a storage medium storing the computer program, and a computer when the functions of various processes executed by the driving advice device of the present invention are realized by the computer program. In the figure, 550 is a program, 552 is a computer, 554 is a magneto-optical disk, 556 is an optical disk, 558 is a magnetic disk, 560 is a memory, 562 is an internal memory, 566 is a reading unit, 570 is a hard disk, 568 and 574 are interfaces, Reference numeral 572 denotes a communication unit.

  A part or all of the functions of each part of the driving advice device of the present invention described in the above embodiments can be realized by a program 550 that can be executed by a computer. In that case, the program 550, data used by the program, and the like can be stored in a computer-readable storage medium. As a storage medium, the reading unit 566 provided in the hardware resource of the computer causes a change state of energy such as magnetism, light, electricity, etc. according to the description content of the program, and a signal corresponding thereto is generated. In this format, the description content of the program can be transmitted to the reading unit 566. For example, a magneto-optical disk 554, an optical disk 556 (including a CD and a DVD), a magnetic disk 558, a memory 560 (including an IC card and a memory card), and the like. Of course, these storage media are not limited to portable types.

  The program 550 is stored in these storage media, and the program 550 is read from the computer by, for example, mounting these storage media on the reading unit 566 or the interface 574 of the computer 552, and stored in the internal memory 562 or the hard disk 570. By executing the program 550 by the CPU 564, the function of the driving advice device of the present invention can be realized. Alternatively, the program 550 is transferred to the computer 552 via a network or the like, and the computer 552 receives the program 550 by the communication unit 572, stores the program 550 in the internal memory 562 or the hard disk 570, and executes the program 550 by the CPU 564. You may implement | achieve the function of the driving advice apparatus of invention. In addition, the computer 552 can be connected to various devices via an interface 568. For example, a display device for displaying information and an input device for inputting information by a user are also connected.

  Of course, some functions may be configured by hardware, or all may be configured by hardware. Alternatively, it can be configured as a program including the present invention together with other configurations.

  Further, the flow of processing according to the above embodiment is an example, and it is needless to say that the flow can be appropriately changed without departing from the gist of the present invention.

  For example, the driving evaluation process and the presentation control process described in the above embodiment may be executed in parallel, or the driving evaluation process and the presentation control process may be executed in a time-sharing manner. May be.

  Further, in the above-described embodiment, in the presentation control process, the form in which advice information is generated and output whenever the personal evaluation information is a predetermined evaluation has been described. However, the present invention is not limited to this. Is not to be done.

  For example, in consideration of safety, the information presentation timing is further estimated based on the vehicle speed and the current position before the information is presented, and the estimated presentation timing hinders driving such as passing a curve or an intersection. It is good also as a structure which stops presentation of information when it is a timing with possibility.

  In addition, in order to identify the traffic scene, the traffic scene is detailed in consideration of the traffic situation acquired by communication with infrastructure systems such as data centers, road-to-vehicle communication, inter-vehicle communication, and the output of sensors mounted on the vehicle. It is good also as a structure specified by making it. The traffic situation includes the color of the signal, the presence / absence of an oncoming vehicle, preceding vehicle, succeeding vehicle, pedestrian, motorcycle, etc., position, number, speed, and the like.

  Furthermore, in the above-described embodiment, the driving behavior is identified using the gaze direction measured using the gaze measuring device 50. However, the face orientation is further identified by the gaze measuring device 50, and the face orientation is taken into consideration. Then, it may be evaluated whether or not safety confirmation is performed.

It is the schematic which shows the structure and function of the driving advice apparatus which concern on embodiment. It is a flowchart which shows the flow of the driving | running evaluation process which concerns on embodiment. It is a flowchart which shows the flow of the presentation control process which concerns on embodiment. It is explanatory drawing of an example of a computer program in the case of implement | achieving the function of various processes with a computer program, the storage medium which stored the computer program, and a computer.

Explanation of symbols

10 Driving advice device 22 Information presentation device (presentation means)
30 Driving Evaluation Device 32 Driving Behavior Identification Unit 34 Evaluation Unit 36 Driving Code DB
38 Traffic Scene Identification Unit 40 Presentation Control Device 42 Traffic Scene Estimation Unit (Estimating Means)
44 Presentation information generation unit (acquisition means, presentation control means)
46 Presentation content storage (advice information storage means)
50 Gaze Measurement Device 52 Vehicle Sensor 54 Position Detection Device 56 Map DB
58 Route Information Holding Unit 60 Personal Evaluation DB

Claims (7)

Detection means for detecting information relating to driving behavior;
A specific means for acquiring the current position information and map information around the current position and identifying the current traffic scene of the vehicle;
Driving evaluation means for performing driving evaluation based on information on driving behavior detected by the detecting means and the traffic scene specified by the specifying means;
Evaluation storage means for storing the result of the driving evaluation by the driving evaluation means for each traffic scene as evaluation information;
An estimation means for acquiring current position information, map information around the current position and information indicating a route selection tendency, and estimating a next traffic scene of the vehicle;
Reading means for reading out the evaluation information indicating the driving evaluation in the traffic scene estimated by the estimating means from the evaluation storage means;
Advice information storage means for storing advice information set in advance according to the evaluation information;
When the evaluation indicated by the evaluation information read by the reading means is lower than a preset evaluation, the advice information corresponding to the evaluation information is obtained before reaching the traffic scene estimated by the estimation means. Presentation control means for reading from the advice information storage means and presenting to the presentation means;
Driving advice device equipped with.   The driving advice device according to claim 1, further comprising current position detecting means for detecting a current position of the vehicle and outputting current position information.   The driving advice apparatus according to claim 1, wherein the detection unit detects a driving operation of the driver on the vehicle as information related to the driving behavior.   The driving advice device according to claim 1, wherein the detection unit detects at least one of a driver's face direction and line-of-sight direction as information related to the driving behavior.   The presentation control means delays the presentation timing of the advice information when the presentation timing of the advice information via the presentation means overlaps with the timing when the vehicle reaches a specific traffic scene. The driving advice device according to any one of the preceding claims. The presentation control means, presentation timing of advice information via presentation means, the vehicle is in a case overlapping the timing of leading to a particular traffic scene, of claims 1 to 4 to stop Hisage shown of the advice information The driving advice device according to any one of the preceding claims.   The driving advice device according to any one of claims 1 to 6, wherein the map information includes at least one of a road type and traffic environment information and a road shape.

Images