JP2005227840A - Running state advice system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enable secure running at a recommended speed when running through a recommended speed change point, avoiding a trouble suffered by a driver, caused by information being presented at a scene in which the information is not required. <P>SOLUTION: An information presentation content controller 27 controls information content to be presented to the driver, according to a necessary acceleration/deceleration to a particular point. Also, the information presentation content controller 27 controls an information presentation unit 14 so as to terminate the information presentation in response to an accelerator pedal being pressed for a predetermined time period Th1. With this, referring to the presented information, the driver can run securely through the particular point at the recommended speed. Thus, it is possible to avoid a trouble suffered by the driver, caused by information being presented in a scene in which the information is not required. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a driving situation advice system that presents appropriate driving speed information to a driver, and enables the driving speed of the recommended speed to be changed reliably at the recommended speed, and information is presented in a scene where information is not required. It is related with the technique which prevents a person feeling annoyance.

Conventionally, the speed at which the vehicle can safely run on the curve ahead of the host vehicle is calculated, and the recommended speed area, the caution speed area, and the dangerous speed area are displayed in the speedometer and map screen according to the calculated speed. A display device for vehicles is known (for example, refer to patent documents 1). According to such a vehicular display device, the driver can safely travel even on a curve with poor visibility by referring to the displayed speed information.
JP-A-9-257507 (paragraph [0013], FIG. 6)

  However, conventional display devices for vehicles do not present the deceleration required to decelerate to the recommended speed before entering the curve, so the driver does not know how much to decelerate, etc. Since the amount of operation for the point where the recommended speed changes cannot be grasped, the point where the recommended speed changes may not be able to travel at the recommended speed.

  In addition, since conventional vehicle display devices are configured to present information regardless of the driver's driving operation, information is presented when information is not necessary, and the driver feels annoyed. was there.

  The present invention has been made to solve the above-mentioned problems, and its purpose is to make it possible to reliably travel at a recommended speed change point at the recommended speed, and to present information in a scene where information is not required, and to drive It is to provide a driving situation advice system that prevents a person from feeling annoyed.

  In order to solve the above-mentioned problem, the feature of the driving situation advice system according to the present invention is that the content of information presented to drive the change point at the recommended speed according to the required acceleration / deceleration up to the change point of the recommended speed. Information presentation content control means for determining the content and information presentation means for presenting information of the content determined by the information presentation content control means. The information presentation content control means is predetermined after the information presentation means starts presenting information. The information presenting means is controlled so as to end the presentation of the information in response to the detection of the driving operation.

  According to the travel situation advice system according to the present invention, the driver can easily recognize the necessary acceleration / deceleration up to the recommended speed change point, so that the recommended speed change point can be reliably driven at the recommended speed. Can do.

  Further, according to the driving situation advice system according to the present invention, since the presentation of information is terminated in response to detecting a predetermined driving action after the presentation of information is started, the information is presented in a scene where the information is not necessary. This can prevent the driver from feeling annoyed.

  Hereinafter, the configuration and operation of a travel situation advice system according to an embodiment of the present invention will be described in detail with reference to the drawings.

[Configuration of driving situation advice system]
First, with reference to FIGS. 1 and 2, the configuration of a travel situation advice system according to an embodiment of the present invention will be described.

  A travel situation advice system according to an embodiment of the present invention is mounted on a vehicle 1 as shown in FIG. 1 and includes vehicle speed, accelerator opening, brake pedal on / off signal, steering angle, steering operation speed, and the like. The vehicle information detecting means 2 for acquiring a signal from the vehicle 1, the navigation device 3 for acquiring road shape data and road surface information on which the vehicle 1 travels, and an obstacle around the vehicle 1 are measured. Estimate the recommended speed of the vehicle 1 according to the road shape and traffic flow around the vehicle 1 using the information acquired by the traffic flow detection means 4, the vehicle information detection means 2, the navigation device 3, and the traffic flow detection means 4. In addition, the recommended speed estimation means 5 for extracting the point where the recommended speed closest to the vehicle 1 changes as a specific point, and the specific point estimated by the recommended speed estimation means 5 Includes an information presenting content control means 6 for controlling the content of the information to be presented to the driver in accordance with kicking recommended speed, and information presentation means 7 for presenting information according to control information presentation content control unit 6 as main components.

  More specifically, as shown in FIG. 2, the travel situation advice system according to the embodiment of the present invention includes a vehicle information detection device 11, a navigation device 12, a traffic flow detection device 13, an information presentation device 14, and information. The vehicle information detection device 11 includes a presentation control unit 15 and acquires vehicle information such as vehicle speed, accelerator opening, brake pedal on / off signal (switch signal), etc., via an in-vehicle LAN (Local Area Network) 16. To do.

  The navigation device 12 maps the vehicle position acquired by means such as GPS (Global Positioning System) or autonomous navigation with reference to road shape data in the map database 21 stored in a recording medium such as a DVD. Information from the road information acquisition unit 23 that acquires road shape data around the host vehicle, information provision infrastructure to a narrow range such as beacons installed on the road, and information provision infrastructure to a wide range such as FM multiplex broadcasting And an infrastructure receiver 22 including a receiving antenna and a converter. The traffic flow detection device 13 is configured by a detection device such as a laser radar, a millimeter wave radar, or an in-vehicle camera, and detects the distance, relative speed, and lateral offset amount between the vehicle ahead and an obstacle.

  The information presentation device 14 includes a display output device such as a center console display or an instrument panel display provided for displaying the road shape data generated by the navigation device 12, and the information presentation control unit 15 includes Display the determined information. In addition, the information presentation control unit 15 reaches a specific point, a recommended speed estimation unit 24 that estimates a recommended speed on a road in the traveling direction of the vehicle 1, a specific point detection unit 25 that detects a specific point where the recommended speed changes. A necessary acceleration / deceleration calculation unit 26 for calculating the acceleration / deceleration of the vehicle 1 required until then, and an information presentation content control unit 27. The navigation device 12 executes the functions of the recommended speed estimation unit 24, the specific point detection unit 25, and the necessary acceleration / deceleration calculation means 26, and the information presentation device 14 executes the function of the information presentation content control unit 27. You may do it.

  The vehicle information detection device 11, the navigation device 12, the traffic flow detection device 13, the information presentation device 14, and the recommended speed estimation unit 24 are respectively the vehicle information detection means 2, the navigation device 3, and the traffic flow detection means shown in FIG. 4, functions as information presentation means 7 and recommended speed estimation means 5. Further, the specific point detection unit 25, the necessary acceleration / deceleration calculation unit 26, and the information presentation content control unit 27 each function as the information presentation content control means 6 shown in FIG.

[Operation of the driving situation advice system]
The travel situation advice system having such a configuration makes it possible to reliably travel at a recommended speed change point at the recommended speed by executing the following information presentation process, and presents information in a scene where no information is required. This prevents the driver from feeling annoyed. Hereinafter, with reference to the flowchart shown in FIG. 3, operation | movement of the driving | running | working condition advice system at the time of performing this information presentation process is demonstrated.

[Information presentation process]
The flowchart shown in FIG. 3 starts in response to the vehicle 1 being in a running state, and the information presentation process proceeds to the process of step S1. The travel situation advice system executes the information presentation process at regular time intervals such as 100 [ms]. When the navigation device 12 executes the functions of the recommended speed estimation unit 24, the specific point detection unit 25, and the necessary acceleration / deceleration calculation unit 26, a program that defines each routine of the information presentation process is the navigation device 12. To be called from the main program.

  In the process of step S1, the navigation apparatus 12 refers to the map database 21, acquires road shape data within a certain range (for example, 500 [m]) from the front of the host vehicle, and uses the acquired road shape data as a recommended speed. Input to the estimation unit 24. Here, in general, the road shape data includes data (point data) of a node (position data of a point having a branch path such as an intersection or a junction) 31 shown in FIG. It is composed of data (link data) of a link 33 connecting 31 and the interpolation point 32. In addition, this point data is information related to the point such as curvature, pause, presence of signal, etc., and link data is a fixed distance such as road width, slope, speed limit, road type, lane number, etc. Each piece of information is provided as attribute information. When the curvature information is not included in the attribute information of the point data, the curvature is calculated using the position coordinates of the point 31, the link length between the points 31, and the angle formed by the links 33 before and after the point 31. be able to.

  Furthermore, in the process of step S1, the vehicle information detection device 11 acquires own vehicle information (vehicle speed Vi, accelerator opening, brake opening, steering rudder angle, steering operation speed, etc.), and uses the acquired information as vehicle information. The required acceleration / deceleration calculation unit 26 and the information presentation content control means 27 are input. Thereby, the process of step S1 is completed, and the information presentation process proceeds from the process of step S1 to the process of step S2.

  In the process of step S2, the traffic flow detection device 13 acquires the inter-vehicle distance and the relative speed with the preceding vehicle, and inputs the acquired information to the recommended speed estimation unit 24 as information regarding the traffic flow. In this process, the navigation device 12 may acquire traffic congestion information around the vehicle using the infrastructure receiver 22 and input the acquired traffic congestion information to the recommended speed estimation unit 24 as information regarding traffic flow. . Thereby, the process of step S2 is completed, and the information presentation process proceeds from the process of step S2 to the process of step S3.

  In the process of step S3, the recommended speed estimation unit 24 estimates the recommended speed on the road in the traveling direction of the host vehicle using the input road shape data and information on the traffic flow. Specifically, when the vehicle 1 travels from the point A to the point F shown in FIG. 5A, the recommended speed estimation unit 24 calculates the speed Vc and school calculated based on the curvature of the curve in the curve section BC. The recommended speed is the speed limit Vs in the zone and the speed limit V1 in other sections. Further, in the example shown in FIG. 5A, the points D and E are temporarily stopped points, so the recommended speed estimation unit 24 estimates the recommended speed so that the vehicle speed is zero at the points D and E. . Then, the recommended speed estimation unit 24 uses a deceleration αd (for example, −2.5 [m / s / s]) and an acceleration αa (for example, +2.0 [m / s / s]) with a standard inclination. The recommended speed pattern as shown in FIG. 5B is generated by connecting the recommended speed estimated by the straight line shown.

  When the recommended speed in the curve section is estimated, the recommended speed estimation unit 24 uses the value obtained from the table showing the relationship between the curvature (R) of the curve and the recommended speed Vc as shown in FIG. When estimating a recommended speed in a section having a smaller speed and a narrow road width among the values, the values obtained from the table showing the relationship between the road width (W) and the recommended speed Vc as shown in FIG. Of the speed values, the smaller speed is the recommended speed. In addition to the road shape data and traffic flow information, the recommended speed estimation unit 24 recommends based on the driver's driving skill, vehicle performance, road condition (road surface condition, etc.), and the driver's familiarity with the road. The speed may be estimated. Thereby, the process of step S3 is completed, and the information presentation process proceeds from the process of step S3 to the process of step S4.

  In the process of step S4, the specific point detection unit 25 uses the curvature calculated from the recommended speed estimation result by the recommended speed estimation unit 24, the change in the attribute of the road shape data, and the positional relationship between the points. A travel scene at a point where the recommended speed changes at a certain position or more (hereinafter referred to as a specific point) at the nearest position is determined. Specifically, the specific point detection unit 25 determines the traveling scene when the curvature changes from 300 [R] to 100 [R] or less within a certain distance (for example, 100 [m]) before and after the specific point. If it is determined that the road width is decreasing, the traveling scene is determined to be road width reduction.

The specific point detection unit 25 may predict the change point from the independent travel to the follow-up travel using the input information on the traffic flow, and detect the change point as the specific point. In this case, the specific point detection unit 25 specifically predicts that the vehicle will transition to follow-up after Ts by substituting the inter-vehicle distance (D) and the relative speed (Vr) into the following formula 1, and after Ts The traveling point of the vehicle is detected as a specific point. Thereby, the process of step S4 is completed, and the information presentation process proceeds from the process of step S4 to the process of step S5.

  In the process of step S5, the information presentation content control unit 27 determines the content of information to be presented to the driver according to the information regarding the recommended speed at the specific point detected by the specific point detection unit 25 (hereinafter, this process is referred to as the content of presentation). Written as decision processing). The details of the presentation content determination process will be described later with reference to the flowchart shown in FIG. Thereby, the process of step S5 is completed, and the information presentation process proceeds from the process of step S5 to the process of step S6.

  In the process of step S6, the information presentation device 14 displays the content of the information determined by the information presentation content control means 27. Thereby, the process of this step S14 is completed and a series of information presentation processes are complete | finished.

[Presentation decision processing]
Next, the presentation content determination process will be described in detail. In the following, the processing in the case where the recommended speed of a specific point is a point where the recommended speed of the specific point decreases with respect to the vehicle speed will be described. The same processing can be performed for a point.

  First, with reference to the flowchart shown in FIG. 7, the presentation content determination process according to the first embodiment of the present invention will be described in detail.

  The flowchart shown in FIG. 7 is started when the process of step S4 is completed, and the presentation content determination process proceeds to the process of step S11.

In the process of step S11, the information presentation content control unit 27 refers to the recommended speed pattern generated by the process of step S3, and determines whether or not a specific point exists within a predetermined distance Lp from the vehicle position. To do. The information presentation content control unit 27 calculates the predetermined distance Lp by substituting the value of the host vehicle speed Vi into the following formula 2. And when it determines with a specific point not existing in predetermined distance Lp from the own vehicle position, the information presentation content control part 27 complete | finishes a presentation content determination process. On the other hand, when it is determined that the specific point exists within the predetermined distance Lp from the vehicle position, the information presentation content control unit 27 advances the presentation content determination process to the process of step S12.

  In the process of step S12, the information presentation content control unit 27 refers to the recommended speed pattern, and reads the recommended speed of the specific point located closest to the road shape along the traveling direction of the vehicle from the vehicle 1. For example, when the traveling scene of the specific point is a curve as shown in FIG. 8A, the information presentation content control unit 27 reads the recommended speed Vc when entering the curve. Note that when the series of presentation content determination processing ends and the recommended speed Vc is read in the next presentation content determination processing, the information presentation content control unit 27 is next to the vehicle next to the specific point from which the previous recommended speed Vc was read. It is assumed that the recommended speed Vc at a specific point is read. Thereby, the process of step S12 is completed, and the presentation content determination process proceeds from the process of step S12 to the process of step S13.

In the process of step S13, the information presentation content control unit 27 calculates a necessary deceleration rate α (<0) for decelerating from the own vehicle speed Vi to the recommended speed Vc by using the following formula 3. In addition, the parameter L in the following mathematical formula 3 indicates the distance [m] from the vehicle position to the curve. Thereby, the process of step S13 is completed, and the presentation content determination process proceeds from the process of step S13 to the process of step S14.

  In the process of step S14, the information presentation content control unit 27 determines whether the calculated required deceleration rate α is equal to or less than a predetermined threshold value α1 (<0), and if the required deceleration rate α is not equal to or less than the threshold value α1. If determined, the presentation content determination process proceeds to the process of step S20. On the other hand, if it is determined that the required deceleration is equal to or less than the threshold value α1, the information presentation content control unit 27 advances the presentation content determination process to the process of step S15. The predetermined threshold α1 indicates the slope of the straight line L1 shown in FIG. 8B, and represents a deceleration that can decelerate the vehicle to the recommended speed Vc safely from time t2. In the process of step S15, the information presentation content control unit 27 determines whether the required deceleration rate α is equal to or less than a predetermined threshold value α2 (<α1), and determines that the required deceleration rate α is equal to or less than the threshold value α2. In this case, the presentation content determination process proceeds to the process of step S17. On the other hand, if it is determined that the required deceleration rate α is not equal to or less than the threshold value α2, the information presentation content control unit 27 advances the presentation content determination process to the process of step S16. The predetermined threshold value α2 indicates the slope of the straight line L2 shown in FIG. 8B, and represents a deceleration that can safely decelerate the vehicle to the recommended speed Vc from time t3.

  In the process of step S16, the information presentation content control unit 27 presents a pointer indicating the recommended speed Vc in the speedometer, and the display color of the sector area between the own vehicle speed Vi and the recommended speed Vc is shown in FIG. The information presenting apparatus 14 is controlled so as to change from the normal state shown in FIG. 9 to a color indicating a caution display such as yellow as shown in FIG. 9B (attention display). Thereby, the process of step S16 is completed, and the presentation content determination process proceeds from the process of step S16 to the process of step S18.

  In the process of step S17, the information presentation content control unit 27 presents a guideline indicating the recommended speed Vc in the speedometer, and the display color of the sector area between the own vehicle speed Vi and the recommended speed Vc is shown in FIG. The information presentation apparatus 14 is controlled to change from the normal state shown in FIG. 9 to a color indicating a warning display such as red as shown in FIG. 9C (warning display). Thus, the process of step S17 is completed, and the information presentation content determination process proceeds from the process of step S17 to the process of step S18.

  In the process of step S18, the information presentation content control unit 27 refers to the input from the vehicle information detection unit 2 and determines whether or not the accelerator pedal of the vehicle 1 is depressed. If it is determined that the accelerator pedal is not depressed, the information presentation content control unit 27 advances the information presentation content determination process to the process of step S20. On the other hand, if it is determined that the accelerator pedal is depressed, the information presentation content control unit 27 advances the information presentation content determination process to the process of step S19. In addition, when the recommended speed of the specific point is a point where the vehicle speed increases, the information presentation content control unit 27 may determine whether or not the brake pedal of the vehicle 1 is depressed. .

  In the process of step S19, the information presentation content control unit 27 refers to the input from the vehicle information detection means 2, and the time that the accelerator pedal is depressed is equal to or longer than the predetermined time Th1, or the accelerator opening is It is determined whether or not the constant value is abnormal. When it is determined that the accelerator pedal is depressed for a predetermined time Th1 or more, or the accelerator opening is a certain value or more, the information presentation content control unit 27 determines that the driver does not require information presentation. Then, the information presentation content determination process proceeds to the process of step S21. On the other hand, when it is determined that the time during which the accelerator pedal is depressed is equal to or longer than the predetermined time Th1 or the accelerator opening is not equal to or greater than a certain value, the information presentation content control unit 27 performs this information presentation content determination processing in step S20. Proceed to processing.

  In the process of step S20, the information presentation content control unit 27 determines whether or not the traveling scene at the specific point has been passed. Specifically, when the traveling scene of the specific point is a curve as shown in FIG. 8A, the information presentation content control unit 27 determines that the accelerator is on at the time of passing the curve exit or within the curve section. At the point of time, it is determined that the vehicle has passed the specific scene.

  And when it determines with having not passed the driving scene of a specific point, the information presentation content control part 27 complete | finishes a series of information presentation content determination. On the other hand, if it is determined that the traveling scene at the specific point has been passed, the information presentation content control unit 27 displays the sector color between the own vehicle speed Vi and the recommended speed Vc in the speedometer as the process of step S21. After the information presentation device 14 is controlled so as to return to the normal state shown in FIG. 9A (recommended speed display end), this presentation content determination process is terminated.

  As is clear from the above description, according to the information content determination process according to the first embodiment of the present invention, the information presentation content control unit 27 presents to the driver according to the required acceleration / deceleration up to the specific point. Since the content of the information is controlled, the driver can reliably drive the specific point at the recommended speed with reference to the presented information.

  Further, according to the information content determination process according to the first embodiment of the present invention, when the information presentation content control unit 27 depresses the accelerator pedal for a predetermined time Th1 or more, or the accelerator opening depresses to a certain value or more. Since the presentation of the information is terminated in response to the information, the information is presented in a scene where the information is not necessary, and the driver can be prevented from feeling annoyed.

  Further, according to the information content determination process according to the first embodiment of the present invention, the information presentation content control unit 27 presents a guideline indicating the recommended speed Vc in the speedometer, and the necessary acceleration / deceleration up to a specific point. Accordingly, the information presentation device 14 is controlled so as to change the display color of the sector area between the host vehicle speed Vi and the recommended speed Vc, so that the driver can change the pointer indicating the recommended speed Vc and the display color of the sector area. Referring to, the specific point can be reliably traveled at the recommended speed.

  In the information content determination process according to the first embodiment, the information presentation content control unit 27 stops the display when the accelerator pedal is depressed for a predetermined time Th1 or more after the caution display or warning display. The presentation content control unit 27 may stop displaying information only in the case of a caution display.

  The flow of the presentation content determination process in this case will be described below with reference to the flowchart shown in FIG. Note that the processing in steps S31 to S35 in the flowchart shown in FIG. 10 and the processing after step S40 are the same as the processing in steps S11 to S15 in the flowchart shown in FIG. 7 and the processing after step S20. In the following, only the processing of step S36 to step S39 will be described.

  In the process of step S36, the information presentation content control unit 27 presents a pointer indicating the recommended speed Vc in the speedometer, and the display color of the sector area between the own vehicle speed Vi and the recommended speed Vc is shown in FIG. The information presentation device 14 is controlled to change from the normal state shown in FIG. 9 to a color indicating a warning display such as red as shown in FIG. 9C (warning display). Thereby, the process of step S36 is completed, and the presentation content determination process proceeds from the process of step S36 to the process of step S40.

  In the process of step S37, the information presentation content control unit 27 presents a guideline indicating the recommended speed Vc in the speedometer, and the information presentation content control unit 27 creates a fan-shaped area between the host vehicle speed Vi and the recommended speed Vc. The information presentation apparatus 14 is controlled to change the display color from the normal state shown in FIG. 9A to a color indicating a warning display such as yellow as shown in FIG. 9B. Thereby, the process of step S37 is completed, and the information presentation content determination process proceeds from the process of step S37 to the process of step S38.

  In the process of step S38, the information presentation content control unit 27 refers to the input from the vehicle information detection means 2 and determines whether or not the accelerator pedal of the vehicle 1 is in a depressed state. If it is determined that the accelerator pedal is not depressed, the information presentation content control unit 27 advances the information presentation content determination process to the process of step S40. On the other hand, if it is determined that the accelerator pedal is depressed, the information presentation content control unit 27 advances the information presentation content determination process to the process of step S39.

  In the process of step S39, the information presentation content control unit 27 refers to the input from the vehicle information detection means 2, and the time that the accelerator pedal is depressed is equal to or longer than the predetermined time Th1, or the accelerator opening is It is determined whether or not a certain value is exceeded. When it is determined that the time that the accelerator pedal is depressed is equal to or greater than the predetermined time Th1 or the accelerator opening is equal to or greater than a certain value, the information presentation content control unit 27 performs the information presentation content determination process in step S41. Proceed to the process. On the other hand, when it is determined that the time during which the accelerator pedal is depressed is equal to or longer than the predetermined time Th1 or the accelerator opening is not equal to or greater than a certain value, the information presentation content control unit 27 performs this information presentation content determination processing in step S40. Proceed to processing.

  Next, the presentation content determination process according to the second embodiment of the present invention will be described in detail with reference to the flowcharts shown in FIGS.

  In the information content determination process according to the first embodiment, the information presentation content control unit 27 determines that the accelerator pedal is depressed for a predetermined time Th1 or more after the caution display or warning display, or the accelerator opening is equal to or greater than a certain value. Although the display is stopped when it is stepped on, in the information content determination process according to the second embodiment, the information presentation content control unit 27 performs an optimal display end determination in accordance with each traveling scene of the specific point.

  Hereinafter, the flow of the presentation content determination process according to the second embodiment of the present invention will be described with reference to the flowcharts shown in FIGS. The processing in steps S51 to S59 in the flowcharts shown in FIGS. 11 and 12 is the same as the processing in steps S11 to S18 and the processing after step S20 in the flowchart shown in FIG. Only the process of step S64 will be described.

  The process of step S60 is started when the process of step S57 or step S56 is completed, and the information presentation content control unit 27 must stop the traveling scene at a specific point such as a red signal or a temporary stop. It is determined whether or not it is a point that should not be. When it is determined that the traveling scene at the specific point is not a point that must be stopped, such as a red light or a temporary stop (when the recommended speed is 0 [km / h]), the information presentation content control unit 27 This presentation content determination process proceeds to the process of step S62 so that the display is continued until V becomes a predetermined value or less. On the other hand, if it is determined that the traveling scene at the specific point is a point that must be stopped, such as a red light or a temporary stop, the information presentation content control unit 27 performs this presentation content determination processing in step S61. Proceed to

  In the process of step S61, the information presentation content control unit 27 determines whether or not the vehicle speed V is equal to or less than a predetermined threshold value VTh. If it is determined that the vehicle speed V is not less than or equal to the predetermined threshold value VTh, the information presentation content control unit 27 advances the presentation content determination process to the process of step S58. On the other hand, when it is determined that the vehicle speed V is equal to or lower than the predetermined threshold value VTh, the information presentation content control unit 27 advances the presentation content determination process to the process of step S59.

  In the process of step S62, the information presentation content control unit 27 refers to the input from the vehicle information detection unit 2 and determines whether or not the accelerator pedal of the vehicle 1 is depressed. If it is determined that the accelerator pedal is not depressed, the information presentation content control unit 27 advances the information presentation content determination process to the process of step S58. On the other hand, if it is determined that the accelerator pedal is depressed, the information presentation content control unit 27 advances the information presentation content determination process to the process of step S63.

  In the process of step S63, the information presentation content control unit 27 refers to the input from the vehicle information detection means 2, and the time during which the accelerator pedal is depressed is equal to or longer than the predetermined time Th1, or the accelerator opening is constant. It is determined whether or not it is greater than or equal to the value. If it is determined that the time during which the accelerator pedal is depressed is equal to or greater than the predetermined time Th1 or the accelerator opening is equal to or greater than a certain value, the information presentation content control unit 27 performs this information presentation content determination processing in step S64. Proceed to On the other hand, when it is determined that the time that the accelerator pedal is depressed is not equal to or greater than the predetermined time Th1, or the accelerator opening is not equal to or greater than a certain value, the information presentation content control unit 27 performs this information presentation content determination processing in step S58. Proceed to the process.

  In the process of step S64, the information presentation content control unit 27 changes the specific point closest to the own vehicle to a specific point to be processed in the future. Thereby, the process of step S64 is completed, and the information presentation content determination process returns from the process of step S64 to the process of step S52.

  As is apparent from the above description, according to the information content determination process according to the second embodiment of the present invention, the information presentation content control unit 27 performs an optimal display end determination for each traveling scene of a specific point. Information can be presented in situations where information is not required, and the driver can be prevented from feeling annoyed.

  As mentioned above, although the embodiment to which the invention made by the present inventors was applied has been described, the present invention is not limited by the description and the drawings that form part of the disclosure of the present invention according to this embodiment. That is, it should be added that other embodiments, examples, operation techniques, and the like made by those skilled in the art based on this embodiment are all included in the scope of the present invention.

It is a functional block diagram of the driving | running | working condition advice system used as one Embodiment of this invention. It is a hardware block diagram of the driving | running | working condition advice system used as one Embodiment of this invention. It is a flowchart figure which shows the flow of the information presentation process which becomes one Embodiment of this invention. It is a figure for demonstrating the structure of road shape data. It is a figure which shows an example of the traveling scene of a vehicle, and the recommended speed pattern produced | generated in this traveling scene. It is a figure for demonstrating the process which estimates a recommended speed according to the curvature and width of a road. It is a flowchart figure which shows the flow of the information presentation content determination process used as the 1st Embodiment of this invention. It is a figure which shows an example of the specific point which a recommended speed reduces, and the required acceleration / deceleration for driving this specific point at a recommended speed. It is a figure which shows an example of the information shown to a driver | operator by the information presentation content determination process shown in FIG. It is a flowchart figure which shows the flow of the application example of the information presentation content determination process shown in FIG. It is a flowchart figure which shows the flow of the information presentation content determination process used as the 2nd Embodiment of this invention. It is a flowchart figure which shows the flow of the information presentation content determination process used as the 2nd Embodiment of this invention.

Explanation of symbols

1: Vehicle 2: Vehicle information detection means 3, 12: Navigation device 4: Traffic flow detection means 5: Recommended speed estimation means 6: Information presentation content control means 7: Information presentation means 11: Vehicle information detection device 13: Traffic flow detection Device 14: Information presentation device 15: Information presentation control unit 16: In-vehicle LAN
21: Map database 22: Infrastructure receiver 23: Road information acquisition unit 24: Recommended speed estimation unit 25: Specific point detection unit 26: Necessary acceleration / deceleration calculation unit 27: Information presentation content control unit Vi: Own vehicle speed Vc: recommended speed

Claims (7)

A driving situation advice system that presents appropriate driving speed information to the driver,
Road condition detection means for detecting the road shape around the vehicle;
Recommended speed estimation means for estimating a recommended speed on a road in the traveling direction of the host vehicle based on at least the road shape detected by the road condition detection means;
With reference to the estimation result of the recommended speed estimation means, a first change point of the recommended speed is selected, and the first change point is set to the recommended speed according to the necessary acceleration / deceleration up to the selected first change point. Information presentation content control means for determining the content of information to be presented for running;
Information presenting means for presenting information determined by the information presentation content control means,
The information presentation content control means controls the information presentation means to end the presentation of information in response to detecting a predetermined driving action after the information presentation means starts presenting information. Running situation advice system.   When the first change point is a point at which the recommended speed decreases or increases, the information presentation content control unit may depress an accelerator pedal or a brake pedal for a predetermined time or more after the information presentation unit starts to present information. 2. The travel situation advice system according to claim 1, wherein the information presentation unit is controlled to end the presentation of the information in response to detecting that the vehicle is in a closed state.   The travel status according to claim 1 or 2, wherein the information presentation content control means determines whether or not to end the presentation of information with reference to information on the first change point. Advice system.   The information presentation content control means selects a second change point different from the first change point in response to detecting a predetermined driving action after the information presentation means starts to present information, The information presenting means is controlled so as to start presenting information for causing the selected second changing point to travel at the recommended speed. 4. Driving situation advice system.   The information presentation content control means presents a guideline indicating a recommended speed in the speed display means by controlling the information presentation means, and the color of the guideline according to the required acceleration / deceleration up to the first point. The travel situation advice system according to any one of claims 1 to 4, wherein:   The travel according to any one of claims 1 to 5, wherein the information presentation content control means selects a change point closest to the host vehicle as a first change point. Situation advice system.   The travel information advice system according to claim 6, wherein the information presentation content control means selects a change point closest to the host vehicle next to the first change point as a second change point. .