JP2017191133A - Driving support apparatus and driving support program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve a method of evaluating a diagnostic result, while improving reliability of the diagnostic result of driving behavior of a driver.SOLUTION: A driving support apparatus 1 diagnoses a driving type of a driver from multiple points of view, on the basis of a combination of results obtained by determining a plurality of driving characteristics. Reliability of a result of diagnosing driving behavior of a driver is higher than the case of diagnosing the driving type on the basis of only a result of determining specific driving characteristics, and an evaluation method of the diagnostic result can be improved. The driver can intuitively know whether his or her driving type has achieved a desired driving type or not, without considering a level of the specific driving characteristic, thereby continuously improving driving behavior as the driver desires.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a driving support device and a driving support program.

  As a prior art, products that determine a driving skill level from vehicle information such as a steering wheel operation and an accelerator work for a driver who wants to improve driving behavior and transmit it through a display are proposed (Patent Documents 1 and 2). reference).

JP2011-159215A JP 2010-3126 A

  It is meaningful to determine the driving skill level of the driver and provide it to the driver in this way, because it is possible to confirm the driving skill level of the driver, but the driver's driving characteristics are determined to the driver. If it can be provided, the driving behavior can be improved, which is more meaningful. The driving characteristics of the driver can be understood as a habit of driving by the driver, but can also be understood as the attitude of the driver to driving. That is, for a driver who desires improvement of driving behavior, the driving behavior can be improved by recognizing his driving characteristics.

  However, providing the driver's driving characteristics to the driver who wants to improve driving behavior does not present the driving characteristics from the viewpoint that the driver should improve. It doesn't always happen.

  For example, if the evaluation logic of accelerator work is determined as an ecological characteristic from the viewpoint of ecology, a driver who wants to do sporty driving will perform driving behavior with the driving characteristics according to the determination result determined from the ecological viewpoint. If this is done, the driving characteristics will be eco-friendly, which will be very different from the sporty driving characteristics which are the driving characteristics to be improved. That is, when the driving behavior of the driver is diagnosed only with the accelerator work that is a specific driving characteristic, there is a possibility that the actual driving characteristic and the diagnosed driving characteristic are greatly different. As a result, even if driving characteristics are provided, the direction of improvement in driving behavior may not be known, and the use of the product may be stopped. If it is going to improve, it will improve in the wrong direction different from the sporty driving which the driver originally wanted.

Another problem is that the driver may feel disgust because the driving characteristics are evaluated on a good / bad scale. That is, when there is a passenger, there is a possibility that the use of the product is interrupted because he / she does not want to see bad evaluation on driving characteristics.
In short, when trying to diagnose the driving behavior of the driver based only on the determination result of the specific driving characteristic, the reliability of the diagnosis result is low and there is room for improvement in the evaluation method of the diagnosis result.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to improve the reliability of the diagnosis result of the driving behavior of the driver and improve the evaluation method of the diagnosis result and driving. To provide support programs.

  According to the invention of claim 1, when the vehicle information acquisition unit (4) acquires the vehicle information, the driving characteristic determination unit (5) determines the driving characteristic of the driver based on the vehicle information. Then, since the driving type diagnosis unit (6) diagnoses the driving type indicating the tendency of the driving behavior of the driver based on the determination results of the plurality of driving characteristics, the driving type providing unit (7) The driving type diagnosed in 6) is provided to the driver. As a result, the driver's driving type can be diagnosed from various angles based on a combination of a plurality of driving characteristics, so compared with the case where the driving behavior of the driver is diagnosed only by the determination result of the specific driving characteristics. Thus, the reliability of the diagnosis result of the driving behavior of the driver can be improved and the evaluation method of the diagnosis result can be improved.

The functional block diagram which shows the driving assistance device in one Embodiment Diagram showing operation type Diagram showing driving type diagnosis results Flow chart showing the operation of the control device of the driving support device

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
As shown in FIG. 1, the driving support device 1 is configured mainly by a control device 2. The control device 2 includes a CPU, a ROM, a RAM, and various interface circuits (all not shown). The CPU is configured to realize a control function described later by a program stored in advance in the ROM. Functional blocks realized by software include a vehicle information acquisition unit 4, a driving characteristic determination unit 5, a driving type diagnosis unit 6, a driving type provision unit 7, a deviation degree determination unit 8, and an advice provision unit 9. In addition, the control apparatus 2 may be configured to be provided alone, or may be configured to be used also as a car navigation apparatus (not shown) or an in-vehicle apparatus 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, for example, and cumulatively stores the vehicle information acquired by the vehicle information acquisition unit 4. It is configured to be possible.

The vehicle information acquisition unit 4 acquires vehicle information, which is various information from various sensors for acquiring an operation state of the vehicle and / or an in-vehicle device for acquiring an operation state by the driver.
Examples of the various sensors include 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 of the vehicle, and the engine speed. A rotation speed sensor that detects the amount of depression of the accelerator, an accelerator opening sensor that detects the amount of depression of the accelerator, a steering sensor that detects the steering angle, a forward monitoring device that detects the distance to the vehicle ahead, and the like.

  In-vehicle devices include a brake control device that provides a brake signal indicating a brake operation (ON / OFF), a winker switch that provides a winker signal that indicates a winker operation, a shift position signal generator that indicates a shift position, and a turn signal state The turn signal signal generator which shows is included. The vehicle information acquisition part 4 may input these vehicle information directly, and may input from each ECU (Electronic Control Unit) through CAN (Controller Area Network) which is a vehicle-mounted network.

  The driving characteristic determination unit 5 determines the driving characteristic of the driver based on the vehicle information acquired by the vehicle information acquisition unit 4. The driving characteristics indicate the operating characteristics when the driver operates various devices and the change characteristics of the vehicle according to the operation results. For example, sudden acceleration, accelerator opening sensor determined based on the acceleration acquired from the acceleration sensor The accelerator pedal determined based on the amount of depression acquired from the brake, the sudden brake determined based on the brake amount acquired from the brake control device, the sudden handle determined based on the steering angle obtained from the steering sensor, Inter-vehicle distance and departure timing when following the forward vehicle determined based on the distance to the forward vehicle acquired from the forward monitoring device, interruption of the other vehicle determined by image analysis of the other vehicle acquired from the forward monitoring device, Judgment based on the overtaking status of the turn signal acquired from the turn signal signal generator It is the turn signal timing, an engine brake or the like is determined based on the engine speed. Various operating characteristics are set in addition to these, but for the sake of simplicity of explanation, the present embodiment will be described by limiting to several types of operating characteristics.

  The driving type diagnosis unit 6 diagnoses the type of driving behavior of the driver (hereinafter referred to as driving type) based on a combination of determination results of a plurality of driving characteristics as will be described later. This driving type indicates a tendency of the driving behavior of the driver, and is diagnosed from various angles based on a combination of determination results of a plurality of driving characteristics. In this case, a standard value as a standard judgment result is defined for each driving characteristic, and the standard value is compared with the judgment result of the driving characteristic determined this time. Diagnose the type as the current driving type.

  As shown in FIG. 2, the driving type can be broadly classified into a type in which a car is regarded as a moving means as in driving at work and a type in which driving is enjoyed as in driving on holidays.

  The types of vehicles that can be used as a means of transportation include “Quick” giving priority to time, “Safety” giving priority to safety, “Pace” giving priority to cooperation, “Law” giving priority to regulations, and “Careful” giving priority to clearance. It is assumed that driving is performed with emphasis on either, and can be classified into the following driving types based on combinations of determination results of a plurality of driving characteristics.

  (1) If rapid acceleration, sudden start, and sudden steering frequently occur, and the margin of the inter-vehicle distance with the preceding vehicle is small, and there is no margin for the starting timing when following the forward vehicle, the fuel consumption may be bad. It is classified as “Quick” because it is a driving type driving while thinking of arriving.

  (2) Drive without thinking of sudden acceleration, sudden start and sudden steering, and when the distance between the vehicle and the vehicle ahead is sufficiently large and the engine brake is used infrequently. The operation type is classified as “Safety”.

  (3) If sudden acceleration, sudden start, and sudden steering do not occur frequently, and there is frequent concession that allows interruption of other vehicles, drive as long as you want to go while conferring with others even if it is late Is classified as “Peace”.

  (4) If there is no frequent rapid acceleration, sudden start, or sudden steering, and the distance between the vehicle and the vehicle ahead is always appropriate, the driving type of driving while thinking that compliance with laws and regulations is the first "."

  (5) If sudden acceleration, sudden start and sudden steering do not occur frequently, and the distance between the vehicle and the vehicle ahead is always sufficient, and if you use a lot of engine brakes, you want to go slowly. However, it is classified as “Careful” as the driving type driving.

  As a type to enjoy driving, "Eco" giving priority to ecology, "Sport" giving priority to agility, "Dynamic" giving priority to speed, "Smart" giving priority to smart, "My pace" giving priority to my pace It is assumed that the vehicle is driven while emphasizing the above, and can be classified into the following driving types based on combinations of a plurality of driving characteristics.

  (1) When frequent acceleration, sudden start, and sudden steering do not occur frequently and the engine brake is frequently used, it is classified as “Eco” because it is a driving type that is driving while wanting to drive ecologically.

  (2) If sudden acceleration, sudden start, and sudden steering frequently occur, and overtaking of other vehicles occurs frequently, even if the fuel efficiency is bad, it is assumed that it is a driving type that is driving while wanting to drive sharply. "."

  (3) If sudden acceleration, sudden start, and sudden steering frequently occur, and the blinker timing is often late, classify it as “Dynamic” driving while thinking that the driver wants to speed up and skip.

  (4) If sudden acceleration, sudden start, and sudden steering do not occur frequently, the distance between the vehicle and the vehicle ahead is appropriate, engine brakes are used frequently, and there are frequent concessions that allow other vehicles to be interrupted. It is classified as “Smart” as a driving type driving while wanting to drive smartly according to the road and environment.

  (5) When sudden acceleration, sudden start, and sudden steering frequently occur and the speed of the vehicle frequently changes, it is classified as “My pace” as a driving type that is driven while wanting to drive at a personal pace.

  In this embodiment, the driving type is roughly divided into a type that captures a car as a moving means and a type that enjoys driving, but it may be classified into other types or only one of them may be adopted. Also good. In addition, as a criterion for diagnosing the driving type, a criterion other than those described above may be adopted, or other driving characteristics may be adopted. Moreover, although the operation type in each type is five types, it is not limited to five types, It is good also as six types or more, and good also as less than five types.

  As shown in FIG. 1, a display 10 is connected to the operation type providing unit 7, and the operation type determined by the operation type diagnosis unit 6 is displayed on the display 10. The display device 10 may be provided alone, or may be configured to be shared with a liquid crystal display provided in a car navigation device, a car audio device, or the like. In addition, a voice generation device may be connected to the driving type providing unit 7 so that the driving type is notified by voice in addition to the display by the display 10.

The deviation degree determination unit 8 compares the current driving type and the driving type selected by the driver for each driving characteristic, and determines the driving characteristic that maximizes the deviation degree of the determination result.
The advice providing unit 9 displays on the display 10 advice that improves the driving characteristics that maximize the deviation degree determined by the deviation degree determination unit 8. In addition to the display by the display device 10, the operation type and advice may be notified by voice.

  Now, there are some drivers who have doubts as to whether their driving behavior is the driving behavior that they originally desire, and want to improve their driving behavior if they differ from the driving behavior that they want. In this way, it is meaningful to provide a driver who desires to improve driving behavior by diagnosing which driving type is the current driving type at the end of the driving behavior.

  However, when diagnosing the driving type, if the driving type is diagnosed only with the judgment result of the specific driving characteristics, the actual driving type may be completely different from the driving type diagnosed this time. It is assumed that the person stops using the product without knowing the direction of improvement in driving behavior. In addition, there may be a sense of disgust due to evaluation on a good or bad scale of determination results of specific driving characteristics.

  For this reason, when the driving support device 1 diagnoses the driving type based on the determination result of the driving characteristics, the driving support device 1 is based not only on the determination result of the specific driving characteristics but also on the combination of the determination results of the plurality of driving characteristics. In other words, the reliability of driving type diagnosis results is improved and the evaluation is improved.

That is, as shown in FIG. 4, the control device 2 of the driving support device 1 determines whether or not the driving action is started (S1: NO). The determination of the start of the driving action is made by, for example, turning on the ignition switch. If it is determined that the driving action is started (S1: YES), vehicle information is acquired (S2). That is, the vehicle information such as the acceleration of the vehicle and the accelerator depression amount by the driver is acquired from the above-described various sensors and in-vehicle devices via the vehicle information acquisition unit 4 and stored in the storage unit 3. Next, it is determined whether or not the driving action has ended (S3). If the driving action has not ended (S3: NO), vehicle information is acquired by moving to step S2.
By repeating the above operation, the storage unit 3 cumulatively stores vehicle information after the ignition switch is turned on.

  Then, when the driver's driving action is completed (S3: YES), that is, when the ignition switch is turned off, the control device 2 determines the driving characteristics of the driver by the driving characteristics determination unit 5 (S4). The determination of the driving characteristic is performed in, for example, five stages. When determining the inter-vehicle distance from the preceding vehicle as an example of the driving characteristic, “5” is used when the inter-vehicle distance is extremely sufficient, and “4” is sufficient. “3” when appropriate, “2” when insufficient, and “1” when extremely insufficient. Instead of determining the driving characteristics in five steps, the driving characteristics may be determined in six steps or more, or may be determined in less than five steps.

  When determining the driving characteristics of the driver as described above, the control device 2 diagnoses the driving type of the driver based on the combination of the determination results of the plurality of driving characteristics (S5). In other words, driving characteristics such as sudden acceleration, accelerator depression, sudden braking, sudden steering frequency, inter-vehicle distance and departure timing when following a forward vehicle, interruption of other vehicles, overtaking of other vehicles, blinker timing, engine braking, etc. Based on the combination of results, the driving type of the driver is diagnosed as shown in FIG.

  Next, the driving type diagnosis result is transmitted to the driver via the display 10 (S6). That is, as shown in FIG. 3, the cumulative total of the diagnosis results of the operation type up to the present is displayed as a bar graph, and among the bar graphs, the bar graph corresponding to the operation type diagnosed this time is identified and displayed. The example shown in FIG. 3 shows a case where the current driving type is diagnosed as Dynamic, and the bar graph corresponding to Dynamic is identified and displayed in a different color from the bar graphs corresponding to other driving types (left in the figure). (Shown with diagonal lines). As a result, the driver can check the current driving type at a glance from the bar graph that is identified and displayed, so that it is possible to easily determine whether the current driving type matches the desired driving type. it can. In this case, the driver is satisfied with the current driving behavior if the current driving type is the desired driving type, while the current driving behavior is not the desired driving type. Get discouraged.

  In addition, since the cumulative total of driving type diagnosis results up to the present is displayed in a bar graph, the proportion of driving type diagnosis results up to now, that is, the tendency of own driving behavior, depending on the length of the bar graph corresponding to the driving type. It can be easily confirmed. At this time, it becomes possible to consider whether the elements of the operation type that cannot be permitted are large, and to provide motivation to improve the operation type. In the case of the example shown in FIG. 3, for example, when the driver wants Law as the driving type, the driving type Dynamic that he cannot tolerate is dominant, so that the driving type is diagnosed as Law. Come to think of improving driving behavior.

  Here, as shown in FIG. 3, a message “Please click on each type for specific advice” is displayed below the display area of the operation type diagnosis result. Therefore, when the driver specifically decides the driving type desired by the driver and wants to improve the driving type, the display unit of the driving type desired by the driver is selected by touch operation from the driving types shown in FIG.

  When the operation type is selected in the display state of FIG. 3, the control device 2 compares the input operation type with the current operation type, which is not shown in the flowchart of FIG. 4, and they are the same. If so, advise to continue the current driving type as the current driving type is appropriate.

  On the other hand, if the input driving type and the current driving type are different, the driving type input in the deviation determination unit 8 and the current driving type are compared for each driving characteristic, and the advice providing unit The improvement advice is displayed based on the determination result of the driving characteristic in which the degree of deviation between the determination result of the driving characteristic and the standard determination result set for the driving characteristic is 9.

  Specifically, when the driver wants Law as the driving type, the determination result of the rapid acceleration at the end of the current driving is “5”, and the standard determination result of the rapid acceleration corresponding to Law is “1”. Yes, if the results of these judgments have the largest deviation from the judgment results of driving characteristics, “If you aim for this driving type, the frequency of sudden acceleration is high, so it is better to step on the accelerator more slowly.” Etc. More specific improvement advice is displayed. The improvement advice may be notified by voice in addition to the display, or may be notified only by voice.

  If there are multiple driving characteristics that have the largest discrepancy between the judgment result of the driving characteristic and the standard judgment result set for the driving characteristic, improvement advice is given so that all of the driving characteristics can be improved. Is displayed.

  If improvement advice is displayed as described above, the driver will be diagnosed as the type of driving he / she wants by driving with the improvement-advised driving behavior. As a result, it is possible to increase the cumulative number of diagnosis results of the target driving type and feel a sense of achievement.

According to such an embodiment, the following effects can be produced.
Since the driving support device 1 diagnoses the driver's driving type from various aspects based on a combination of the determination results of a plurality of driving characteristics, compared to the case of diagnosing the driving type only by the determination result of the specific driving characteristics. Thus, the reliability of the diagnosis result of the driving behavior of the driver can be improved and the evaluation method of the diagnosis result can be improved. Therefore, the driver can intuitively know whether or not the driving type is the driving type he desires, not a measure of good or bad specific driving characteristics. Improvements can be made continuously.

Since the cumulative total of driving type diagnosis results is displayed as a bar graph, it is possible to intuitively recognize the tendency of the driving type by comparing the lengths of the bar graphs.
Since the bar graph corresponding to the current driving type is identified and displayed with respect to the bar graph corresponding to the other driving type, it is easy to check the current driving type and compare it with other driving types. Improvements can be made.

  When the driving type is selected, if the selected driving type is different from the current driving type, the driving characteristic judgment result is compared with the standard judgment result, and the driving characteristic with the maximum deviation is improved. The advice to improve the driving type can be clearly provided.

(Other embodiments)
The present invention is not limited to the above-described embodiment, but may be modified or expanded as follows, each modified example may be combined with the above-described embodiment, or each modified example may be combined.
The driving support apparatus 1 may display the current driving type alone, may display the total number as a numerical value, or may omit the total number display.
Instead of displaying the cumulative total of the operation type diagnosis results in a bar graph, it may be displayed in a pie chart or a line graph so as to be comparable.

  Instead of displaying the driving type in alphabet, the driving type may be displayed in Japanese, or may be displayed as a single kanji character representing the driving type, an animal representing the driving type, or other figure. In this case, in the case where past driving types are displayed in one character kanji or animals in addition to the current driving type, the cumulative driving type diagnosis result may be expressed in kanji or animal size.

Instead of providing the current driving type to the driver at the end of the driving action, it may be displayed as the previous driving type at the start of the next driving.
The accumulated accumulated driving type diagnosis results may be limited to the most recent months or may be limited to an arbitrary period.

  You may comprise as a system which uploads the driving | running characteristic diagnosed with the driving assistance apparatus 1 to the cloud server on a network, determines a driving type with this cloud server, and downloads to the driving assistance apparatus 1. FIG. When a system with such a configuration is adopted, it should be used as big data to classify the driving type of each driver and the driving type targeted by the driver by age, gender, driving years, etc. Can do.

In the drawings, 1 is a driving support device, 4 is a vehicle information acquisition unit, 5 is a driving characteristic determination unit, 6 is a driving type diagnostic unit, 7 is a driving type providing unit, 8 is a deviation degree diagnostic unit, and 9 is an advice providing unit. is there.

Claims (7)

A vehicle information acquisition unit (4) for acquiring vehicle information indicating an operation state of the vehicle and / or an operation state by the driver;
A driving characteristic determination unit (5) for determining a driving characteristic of the driver based on the vehicle information;
A driving type diagnosis unit (6) for diagnosing a driving type indicating a tendency of the driving behavior of the driver based on a plurality of determination results of the driving characteristics;
A driving type providing unit (7) for providing the driving type diagnosed by the driving type diagnosis unit to the driver;
A driving assistance device comprising:   The driving support device according to claim 1, wherein the driving type providing unit provides the driving type diagnosed this time by the driving type diagnosis unit and the other driving types diagnosed in the past so as to be comparable.   The driving support device according to claim 1, wherein the driving type providing unit cumulatively provides the driving type diagnosis results by the driving type diagnosis unit.   The driving support device according to claim 3, wherein the driving type providing unit displays a cumulative total of driving type diagnosis results in a graph.   The driving support device according to any one of claims 2 to 4, wherein the driving type providing unit identifies and displays the driving type diagnosed by the driving type diagnosis unit with respect to other driving types. When one driving type is selected from among the driving types provided by the driving type providing unit, a determination result of driving characteristics for diagnosing the selected driving type and a standard determination result of the driving characteristics A divergence degree determination unit (8) for determining a divergence degree;
An advice providing unit (9) for providing advice for improving the driving characteristics determined by the divergence degree determination unit to be the maximum divergence degree;
The driving support device according to any one of claims 2 to 5, further comprising: A driving support program executed by the driving support device (1),
A procedure for acquiring vehicle information indicating an operation state of the vehicle and / or an operation state by the driver;
A procedure for determining the driving characteristics of the driver based on the vehicle information;
A procedure for diagnosing a driving type indicating a tendency of the driving behavior of the driver based on a plurality of determination results of the driving characteristics;
A procedure for providing the driver with the driving type diagnosed by the driving type diagnosis unit;
A driving assistance program to execute.

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