JP2017167199A - Drive supporting system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a drive supporting system which can provide a driver with an appropriate guidance according to the degree of understanding of a drive supporting function when providing the driver with drive supporting information on the drive supporting function provided to the driver by a vehicle.SOLUTION: The present invention relates to a drive supporting system for supporting the driving of a driver of a vehicle, including: conversation means for conducting conversations with a driver; conversation history storage means for storing the history of conversations made by the conversation means; determination means for determining the degree of understanding of the drive supporting function by the driver, using the history of the conversations stored in the conversation history storage means; and notification means for notifying the driver of drive supporting information according to the result of determination by the determination means.SELECTED DRAWING: Figure 12

Description

  The present invention relates to a driving support system.

  A system that supports driving for a driver driving a vehicle is known. For example, a technique is known that refers to the operating conditions based on the traveling environment and guides the use of the in-vehicle device when the operating conditions are satisfied (see Patent Document 1 below).

JP 2008-305319 A

  According to the technique described in Patent Document 1, it is possible to guide the use of the in-vehicle device to the driver driving the vehicle, but it is possible to determine how much knowledge the in-vehicle device guided by the driver has. Can not.

  The degree of understanding of the in-vehicle device to be guided may vary depending on the driver. For this reason, the technique which can change the content to guide according to a driver's comprehension degree is desired. Such a technique is similarly desired not only for in-vehicle devices but also for overall driving support functions of vehicles.

  More specifically, for example, a driver with a high level of understanding of a predetermined driving support function is simply guided to the driver support function, and a driver with a low level of understanding is carefully guided to the driving support function. A guidance method is possible.

  The present invention has been made in view of the above circumstances, and when guiding driving support information related to the driving support function provided by the vehicle to the driver, the driver is provided with appropriate guidance according to the degree of understanding of the driving support function. An object is to provide a driving support system that can be performed.

  The present invention is a driving support system that provides driving assistance to a driver who drives a vehicle, a conversation means for talking with a driver, a conversation history storage means for storing a history of conversation performed by the conversation means, Judgment means for judging the driver's understanding of the driving assistance function using the conversation history stored in the conversation history storage means, and notification for informing the driver of driving assistance information according to the judgment result of the judgment means And means.

  According to the driving support system configured as described above, when driving assistance information related to the driving assistance function provided by the vehicle to the driver is guided to the driver, appropriate guidance can be given to the driver according to the degree of understanding of the driving assistance function. it can.

  The conversation history storage means stores the conversation history for each type of driving support function, and the determination means determines the degree of understanding based on the number of conversations stored for each driving support function. You may make it do.

  If comprised in this way, the driving assistance system can alert | report the driving assistance information according to the driver's comprehension degree for every driving assistance function, even when there are a plurality of driving assistance functions.

  Further, the determining means determines which of the stored conversation counts is a plurality of divisions with a plurality of threshold values, and the notifying means notifies driving support information according to the classification determined by the determining means. You may make it do. For example, when the stored number of conversations is equal to or greater than a threshold, the determination unit determines that the understanding level of the driving support function is high, and when the stored number of conversations is less than the threshold value, the understanding of the driving support function is determined. It may be determined that the degree is low.

  With this configuration, the driver's understanding of the driving support function can be further subdivided, and the driving support information can be notified according to the subdivided understanding, so that more advanced driving support can be provided to the driver. It becomes possible.

  Further, the driving support information notified by the notification means is first driving support information corresponding to the type of driving support when the degree of understanding is high, and the type of driving support when the degree of understanding is low. The second driving support information may have a larger amount of information than the first driving support information.

  If comprised in this way, it will not be necessary to alert | report unnecessary driving assistance information to the driver with a high comprehension degree, and it will become possible to alert | report sufficient driving assistance information to the driver with a low comprehension degree.

  Further, the number of conversations may be a cumulative number since the first driving of the vehicle was activated. The number of conversations may be a cumulative number within a predetermined period. In the case of a driver who does not drive the vehicle regularly when the cumulative number is within the predetermined period, if there is a period of not driving for a while, the degree of understanding of the driving support function may change, but such Even in this case, the driver assistance information can be notified to the driver based on the degree of understanding according to the driving situation of the most recent month.

  The driving support system includes a specifying unit that specifies a driver who drives the vehicle, and the conversation history storage unit stores the conversation history for each driver specified by the specifying unit, and the determination unit May determine the degree of understanding based on a conversation history according to the driver.

  If comprised in this way, even when a vehicle is shared by a plurality of drivers, it is possible to perform a lecture according to the degree of understanding of the functions of the driver.

  Furthermore, the driving support system includes a communication unit that communicates with a server equipped with a conversation system that performs a conversation with a driver, and that communicates with the conversation system from the server, and the server and the server via the communication unit You may be allowed to have a conversation with the driver.

  By installing a conversation system on the server, it is possible to have a variety of conversations with the driver based on the vast amount of information acquired by the server and increase conversations related to driving support functions. Can be improved.

  ADVANTAGE OF THE INVENTION According to this invention, when the driving assistance information regarding the driving assistance function which a vehicle provides to a driver is guided to a driver, the driving assistance system which can perform appropriate guidance to a driver according to the understanding degree of a driving assistance function is provided. To do.

The figure which shows an example of the schematic structure of the network in which the vehicle which concerns on embodiment of this invention is contained. The block diagram which shows an example of the schematic structure of the vehicle which concerns on the embodiment. The figure which shows an example of the arrangement position of the ACC operation part which concerns on the same embodiment. The figure which shows an example of the ACC operation part which concerns on the same embodiment. The flowchart which shows an example of the process which ECU performs when the ACC function which concerns on the embodiment is set to ON. The figure which shows an example of the data structure of the conversation history information which concerns on the same embodiment. The figure which shows an example of the data structure of the conversation number information which concerns on the same embodiment. The figure which shows an example of the data structure of the lecture information storage part which concerns on the same embodiment. The block diagram which shows an example of the schematic structure of the server which concerns on the embodiment. The flowchart which shows an example of the ACC learning process which concerns on the same embodiment. The flowchart which shows an example of the ACC learning process which concerns on the same embodiment. The flowchart which shows an example of the lecture alerting | reporting process which concerns on the same embodiment. The figure which shows an example of the panel display in the case of giving a lecture carefully with respect to the driver with a low understanding degree with respect to the ACC function which concerns on the embodiment. It is an example of a panel display when the ACC function is simply lectured for a driver who has a high degree of understanding of the operation of the ACC function according to the embodiment. The figure which shows an example of the data structure of the conversation number information which concerns on the modification of the embodiment.

  Below, the case where the driving assistance system of this invention is applied to the vehicle 1 is demonstrated. In the following embodiments, an ACC (radar cruise control) function will be described as an example of the driving support function. However, the present invention is not limited to the ACC function, and the driver is supported for driving. It can be applied to other driving support functions.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a diagram illustrating an example of a schematic configuration of a network configuration including a vehicle 1.
As shown in FIG. 1, a vehicle 1 and a server 2 are communicably connected via a network 3. The network 3 may be the Internet, for example, or may be configured with a mobile phone communication network and the Internet.

  FIG. 2 is a block diagram illustrating an example of a schematic configuration of the vehicle 1. In the following description, the vehicle 1 is an electric vehicle.

  As shown in FIG. 2, the vehicle 1 includes an ECU 11, a rotation speed sensor 12, a brake sensor 13, an accelerator pedal sensor 14, a front radar sensor 15, a right camera 16, an image processing unit 17, a left camera 18, an image processing unit 19, ACC operation unit 20, tires 21 and 22, motor 23, rotating shaft 24, motor control unit 25, brake system 26, brake control unit 27, panel 28, sound unit 29, panel control unit 30, communication unit 31, storage unit 32 , And GPS33. In addition to these configurations, the vehicle 1 includes devices for realizing functions as an electric vehicle.

  The ECU 11 is a control unit that controls each device in the vehicle 1 in an integrated manner. Further, for example, the ECU 11 receives an instruction from the server 2 and controls the conversation between the server 2 and the driver (conversation means). Moreover, ECU11 memorize | stores the conversation which the server 2 and the driver had in the memory | storage part 32 as conversation history information (conversation history storage means), and based on this conversation history information, a driver | operator's driving | operation regarding the driving assistance function of the vehicle 1 is carried out. Support information is broadcast (hereinafter also referred to as a lecture). In the present embodiment, as described above, the ACC function is given as an example of the driving support function, and the case where the ACC function is lectured to the driver will be described. It is possible to apply to.

  The rotation speed sensor 12 is disposed in the vicinity of the rotation shaft 24 and detects the rotation speed of the rotation shaft 24. Further, the rotation speed sensor 12 calculates the vehicle speed of the vehicle 1 from the detected rotation speed of the rotation shaft 24 and outputs the calculated vehicle speed to the ECU 11.

  The brake sensor 13 detects the amount of depression of a brake pedal (not shown) that is depressed by the driver. The brake sensor 13 outputs the detected depression amount of the brake pedal to the ECU 11.

  The accelerator pedal sensor 14 detects the amount of depression of an accelerator pedal (not shown) that is depressed by the driver. The accelerator pedal sensor 14 outputs the detected amount of depression of the accelerator pedal to the ECU 11.

  The front radar sensor 15 is disposed at a predetermined position (for example, a bumper portion) in front of the vehicle 1, radiates radar in front of the vehicle 1, and detects a reflected wave of the radar 1. When the vehicle 1 is present and the vehicle 1 is present, the inter-vehicle distance to the vehicle 1 is acquired and the information is output to the ECU 11.

  The right camera 16 is arranged on the right side of the vehicle 1, for example, a side mirror, captures the right side surface of the vehicle 1, and outputs image data of the captured image to the image processing unit 17. Based on the image data input from the right camera 16, the image processing unit 17 detects an object on the right side of the vehicle 1 (another vehicle or a person) and a median strip of the road. The image processing unit 17 outputs the detection result to the ECU 11. Note that the left camera 18 and the image processing unit 19 are the same as the right camera 16 and the image processing unit 17 except that processing is performed on an image obtained by photographing the left side surface of the vehicle 1, and thus description thereof is omitted. To do.

  The ACC operation unit 20 is an operation unit in which the driver instructs the vehicle 1 to execute the ACC function. Details of the ACC operation unit 20 will be described later with reference to FIGS. 3 and 4.

  The tires 21 and 22 are, for example, rear wheels of the vehicle 1, are connected to the rotation shaft 24, and rotate in synchronization with the rotation of the rotation shaft 24. The rotating shaft 24 is connected to the motor 23 and rotates when the motor 23 is operated. The motor 23 is driven based on the control of the motor control unit 25. When the motor control unit 25 drives the motor 23 based on an instruction from the ECU 11, the rotating shaft 24 and the tires 21 and 22 rotate, and the vehicle 1 travels. For example, when receiving an instruction to increase the vehicle speed from the ECU 11, the motor control unit 25 rotates the motor 23 at a high speed to increase the vehicle speed of the vehicle 1, and when receiving an instruction from the ECU 11 to decrease the vehicle speed, The vehicle 1 is rotated to reduce the vehicle speed.

  The brake system 26 is, for example, a hydraulic brake system. By operating the brake system 26, the vehicle 1 can be decelerated or stopped. The brake control unit 27 adjusts the strength of the brake of the brake system 26 in accordance with an instruction from the ECU 11 based on the depression amount of the brake pedal output from the brake sensor 13.

  The panel 28 is a liquid crystal display, for example, and displays information on the driver based on the control of the panel control unit 30. The panel 28 is provided at a position where the driver can easily recognize, for example, on the dashboard in front of the driver's seat with the display surface facing the driver. In the present embodiment, the panel 28 displays a lecture relating to the ACC function, and displays conversation contents with the server 2 in characters.

  Based on the control of the panel control unit 30, the voice unit 29 outputs a caution sound to the driver, outputs a voice according to the contents of the lecture, or outputs the contents of the conversation to the driver of the server 2 by voice. The voice unit 29 has a built-in microphone, and acquires the voice generated by the driver. The voice acquired in this way is transmitted to the server 2 via the communication unit 31 and the network 3 under the control of the ECU 11.

  The communication unit 31 communicates with the server 2 via the network 3. The communication unit 31 controls transmission / reception of commands and the like between the server 2 and the vehicle 1 based on the conversation system of the server 2, for example.

  The storage unit 32 stores the conversation performed between the driver and the server 2 as conversation history information. The storage unit 32 stores conversation number information and lecture information (driving support information). An example of the conversation history information, the conversation number information, and the driving support information will be described later with reference to FIGS.

  The GPS 33 is a ground positioning system and acquires the current position of the vehicle 1. The GPS 33 outputs the acquired current position to the ECU 11. For example, the ECU 11 transmits the current position acquired from the GPS 33 to the server 2.

  Based on information input from the rotational speed sensor 12, the brake sensor 13, the accelerator pedal sensor 14, the front radar sensor 15, the image processing units 17 and 19, and the ACC operation unit 20, the ECU 11 controls the motor control unit 25 and the brake control. The unit 27 is controlled to realize traveling by automatic driving assistance of the vehicle 1, for example, ACC traveling.

FIG. 3 is a diagram illustrating an example of an arrangement position of the ACC operation unit 20.
The ACC operation unit 20 is provided at a position where the driver seated in the driver's seat can easily operate. For example, when the driver holds the steering wheel of the handle H with the right hand, the operation surface of the ACC operation unit 20 is the thumb of the right hand. Provided within reachable range.

FIG. 4 is a diagram illustrating an example of the ACC operation unit 20.
The ACC operation unit 20 is provided with an ACC switch 20a, a torque switch 20b, and a cancel switch 20c.

  The ACC switch 20a is a switch for turning on / off the ACC function. When the ACC function is turned ON, the vehicle 1 performs ACC traveling or CC (cruise control, constant speed) traveling. The ACC traveling is a traveling method that follows the preceding vehicle when the preceding vehicle 1 exists, and the CC traveling is a traveling method that travels at a speed (constant speed) instructed by the driver when there is no preceding vehicle.

  The torque switch 20b is configured to be rotatable in a vertical range from the center position in a predetermined range. In a state where no load is applied (a state where the driver is not operated), the torque switch 20b is located at the center position. When the driver pushes the torque switch 20b upward, the RES switch is turned on. When the driver pushes the torque switch 20b downward, the SET switch is turned on. Here, the RES switch is used to increase the set vehicle speed of the vehicle 1 or to return to the original set vehicle speed after finishing the constant speed travel. The SET switch is used to lower the set vehicle speed of the vehicle 1 or to set a vehicle speed for traveling at a constant speed.

  The cancel switch 20c is a switch for canceling the constant speed travel when the vehicle 1 is traveling at a constant speed.

  Next, ACC travel will be described. FIG. 5 is a flowchart showing an example of processing executed by the ECU 11 when the ACC switch 20a is turned on by the driver and the ACC function is turned on.

  As shown in FIG. 5, when the ACC switch 20a is turned on by the driver and the vehicle speed of the vehicle 1 is set (ST11), the ECU 11 determines whether or not a preceding vehicle exists (ST12). The ECU 11 determines whether there is a preceding vehicle within a predetermined distance ahead based on information about the preceding vehicle acquired from the front radar sensor 15. When it is determined that there is no preceding vehicle (ST12: NO), the ECU 11 executes constant speed traveling. Therefore, the vehicle 1 travels on the road at a constant speed.

  Further, when it is determined that there is a preceding vehicle (ST12: YES), the ECU 11 executes a follow-up traveling that follows the preceding vehicle. Accordingly, the vehicle 1 travels ACC while following the preceding vehicle. Next, the ECU 11 determines whether or not the vehicle speed of the vehicle 1 is 40 km / h or higher (ST14). The ECU 11 performs this determination based on the vehicle speed output from the rotational speed sensor 12.

  When it is determined that the vehicle speed of the vehicle 1 is 10 km / h to less than 40 km / h (ST15: NO), the ECU 11 sets the follow-up speed to 40 km / h, executes the follow-up running at the speed, and When it is determined that the vehicle speed is 40 km or more (ST15: YES), the ECU 11 sets the follow-up speed to 40 km / h or more, for example, the acquired vehicle speed, and executes the follow-up running at the vehicle speed. In this way, the follow-up speed is executed.

  Next, the conversation history information T1 stored in the storage unit 32 will be described. FIG. 6 is a diagram illustrating an example of a data structure of conversation history information. The conversation history information T1 is configured by associating an ACC (driving support) function for the driver with conversation contents, and sequentially storing conversations with the server 2 from the start of the first driving of the vehicle 1. More specifically, conversation contents are associated with date, place, and conversation contents.

  Specifically, as shown in FIG. 6, the conversation history information T1 is associated with conversation information (a set of date, place, and conversation content) in association with the ACC function.

  Next, the conversation number information T2 stored in the storage unit 32 will be described. FIG. 7 is a diagram illustrating an example of a data structure of the conversation number information T2. The conversation number information T2 stores the ACC (driving support) function for the driver and the accumulated conversation number of conversations related to the ACC function in association with each other.

  As shown in FIG. 7, the ACC function is associated with the cumulative number of conversations. For example, when a conversation related to the ACC function is performed between the server 2 and the driver, and a conversation is added to the conversation history information T1 (refer to FIG. 6), the cumulative number of conversations corresponding to the ACC function is incremented. In the figure, the cumulative number of conversations is “35”.

  Next, lecture information (driving support information) T3 stored in the storage unit 32 will be described. FIG. 8 is a diagram illustrating an example of a data structure of the lecture information T3. In the present embodiment, description will be given by taking, as an example, lecture information that is lectured to the driver regarding the ACC function.

  As shown in FIG. 8, the lecture information T3 is associated with a task number, a task, lecture contents (polite: second driving support information), and lecture contents (simple: first driving support information).

  The tasks are related to the function of ACC, and tasks with task numbers 1 to 10 are set. For task number 1, “ACC switch is turned on by ACC switch”, for task number 2, “following / constant speed control is started by SET switch”, and for task number 3, “ACC termination method” However, task number 4 has a “method of changing the set vehicle speed”, task number 5 has a “method of changing the set vehicle speed”, task number 6 has “acceleration with accelerator”, and task number 7 has , “Restart ACC function with SET switch”, task number 8 is “change following vehicle 1”, task number 9 is “LDW caution”, task number 10 is “LDW caution” Are associated with each other.

  In addition, the lecture content is associated with the task number (task). Lecture contents are set for each task: a lecture contents for polite lectures to the driver and a lecture contents for simple lectures to the driver.

  As a polite lecture content, task number 1 has “ACC switch turned on because ACC switch was pressed”, but task number 2 has “Caution sound settable range from 40 km / h to 100 km / h. h. Raise the speed of the car a little with the accelerator, and then press the SET switch again. ”is the task number 3,“ The ACC switch has been turned off, so the ACC function will end. ” 4 indicates that “following vehicle speed has been set to 40 km / h”, but task number 5 indicates that “the set vehicle speed increases by 5 km each time the RES switch is kept pressed. The set vehicle speed is increased by 45 (50, 55, 60 , ...) changed to km / h ", but in task number 6," If you press the SET switch again with the accelerator pedal depressed, the current vehicle speed will change to the set vehicle speed. " "In task number 7," Press the SET switch down to resume the ACC function. ", But in task number 8," Do you want to change the vehicle 1 to follow? " However, task number 9 is associated with "Vehicle 1 is in the right lane. Please return." And number 10 is associated with "Vehicle 1 is in the left lane. Please return." ing.

  Also, as simple lecture contents, “ACC start” is in task number 1, “following start” is in task number 2, “ACC end” is in task number 3, and “ACC end” is in task number 4. “Set to 40 km / h” is set to task number 5, “45 (50, 55, 60,...) Km / h” is set, task number 6 is “set vehicle speed” is set to task number 7 “ACC restart”, task number 8 is associated with “change vehicle 1?”, Task number 9 is associated with “caution sound”, and task number 10 is associated with “caution sound”.

FIG. 9 is a block diagram illustrating an example of a schematic configuration of the server 2.
As illustrated in FIG. 9, the server 2 includes a CPU 51, a ROM 52, a RAM 53, a storage unit 54, and a communication unit 56. The storage unit 54 stores a conversation program 55. The server 2 also includes other configurations for realizing the server function, but illustration and description thereof are omitted.

  The CPU 51 comprehensively controls each device in the server 2. The ROM 52 stores a basic program executed by the CPU 51. The RAM 53 is used as a work area when the CPU 51 executes processing, for example. The communication unit 56 controls communication with the vehicle 1 via the network 3.

  The storage unit 54 is, for example, an HDD (hard disk drive). The storage unit 54 stores a conversation program 55. The conversation program 55 is a program for realizing a conversation system in which the server 2 has a conversation with the driver of the vehicle 1. The server 2 reads out and executes the conversation program 55 from the storage unit 54, thereby acquiring information such as the vehicle position and running state from the vehicle 1 and selecting appropriate information for the vehicle 1 from the information acquired from the outside. Then, based on the selected acquired information, an instruction is transmitted to the vehicle 1 so as to have an appropriate conversation with the driver of the vehicle 1. For example, when the server 2 acquires information on the upgrade of the ACC function of the vehicle 1 from an external information processing apparatus, if the vehicle 1 is in a driving situation in which the ACC function can be realized, the fact that the ACC function has been upgraded. An instruction for performing a conversation is transmitted to the vehicle 1. In response to this instruction, the ECU 11 of the vehicle 1 causes the panel control unit 30 to operate the panel 28 and the voice unit 29 to realize a conversation between the server 2 and the driver. As described above, since the server 2 is equipped with the conversation system, various conversations with the driver can be performed based on the vast amount of information acquired by the server 2, and the conversation regarding the driving support function increases. Therefore, it is possible to improve the determination accuracy of the understanding level of the ECU 11 described later.

  Next, the ACC learning process (ACC learning mode) executed by the ECU 11 will be described. 10 and 11 are flowcharts showing an example of the ACC learning process executed by the ECU 11.

  As shown in FIG. 10, when the ECU 11 accepts a user input or an event occurs (ST101), the ECU 11 determines whether the user input or the event occurrence relates to the usage method of the ACC function (ST102). ).

  When it is determined that it is not a method of using the ACC function (ST102), the ECU 11 executes a process according to a user input or event (ST103). For example, the learning mode of the method for using functions other than the ACC learning mode is executed.

  When it is determined that the method is related to the usage of the ACC function (ST103: YES), the ECU 11 executes the ACC learning mode (ST104). Details of the ACC learning mode will be described with reference to FIG.

  As shown in FIG. 11, the ECU 11 determines whether or not the ACC switch 20a is ON (ST201). When it is determined that the ACC switch 20a is not ON (ST201: NO), the ECU 11 gives a lecture to the driver to start the ACC function (ST202). When the ECU 11 first activates the ACC function, the ECU 11 stores the information (hereinafter referred to as activation determination information) in a predetermined memory, and this activation determination information indicates that the ACC function has already been activated. The process of step ST203 may be executed without performing the process of step ST202. With this configuration, the activation of the ACC function is lectured to the driver only when the ACC function is activated for the first time.

  When it is determined that the ACC switch 20a is ON (ST201: YES), the ECU 11 lectures the vehicle speed setting (ST203). Then, after giving a lecture for ACC activation (ST202) or displaying a lecture for setting the vehicle speed (ST203), the ECU 11 waits for an input (ST204).

  When a user input or event occurs in the standby state (ST205), the ECU 11 determines whether or not these user inputs or events relate to the ACC function (ST206).

  If it is determined that the ACC function is concerned (ST206: YES), the ECU 11 explains how to use the ACC function according to the user input or event (ST207). Subsequently, the ECU 11 stores the content of the conversation performed by the driver in the conversation history information T1 stored in the storage unit 32 (ST208). And a process returns to the standby state of step ST204.

  On the other hand, when it is determined in step ST206 that it is not related to the use of the ACC function (ST206: NO), the ECU 11 determines whether or not the ACC learning mode is ended (ST209). When it is determined that the ACC learning mode is ended (ST209: YES), the ECU 11 ends this process.

  When it is determined that the ACC learning mode has not ended (ST209: NO), the ECU 11 determines whether or not it is an ACC function end event (ST210). If it is determined that the event is an ACC function end event (ST210: YES), the ECU 11 determines whether or not to end the learning mode based on the content of the ACC function end event (ST211).

  When it is determined that the ACC learning mode is ended (ST211: YES), the ECU 11 ends this process. If it is determined that the ACC learning mode has not ended (ST211: NO), the ECU 11 returns to the process of step ST204 and enters an input standby state.

  When it is determined that the event is not the ACC function end event (ST210: NO), the ECU 11 determines whether or not to end the ACC learning mode (ST212).

  When it is determined that the ACC learning mode is ended (ST212: YES), the ECU 11 ends the ACC learning mode and shifts to a process of referring to another rule based on the user input. The other rule is, for example, a search execution rule. The search execution rule is a process of searching for predetermined content in accordance with user input and notifying the user of the search result. If it is determined that the ACC learning mode is not ended (ST212: NO), the ECU 11 returns to the process of step ST204 and enters an input standby state.

  Next, the lecture notification process will be described. FIG. 12 is a flowchart illustrating an example of processing executed by the ECU 11 when a lecture regarding the ACC function is given to the driver.

  As shown in FIG. 12, ECU 11 determines whether or not the use conditions for the lecture function are satisfied (ST301). In the present embodiment, the ECU 11 makes a determination based on whether or not an operation related to the ACC function has been performed by the driver, or whether or not a lecture that informs the driver when the ACC function is being executed has occurred. . When it is determined that the use condition is not satisfied (ST301: NO), that is, when there is no operation related to the ACC function or when it is not necessary to notify the lecture, the standby state is entered.

  If it is determined that the use condition is satisfied (ST301: YES), the ECU 11 acquires the degree of understanding of the task corresponding to the ACC function indicated by the use condition (ST302). More specifically, the ECU 11 acquires “35” from the conversation number information T2 in the storage unit 32 as the conversation number information associated with the ACC function.

  Next, the ECU 11 determines whether or not the number-of-conversations information (for example, “35”) is larger than a threshold value (ST303: determination unit). The threshold can be arbitrarily set. When it is determined that the conversation number information is equal to or greater than the threshold (ST302: YES), the ECU 11 selects simple lecture contents as a lecture to be notified to the driver (ST304). On the other hand, when it is determined that the number-of-conversations information is less than the threshold (ST304: NO), the ECU 11 selects polite lecture contents as a lecture to notify the driver (ST305).

  When the lecture content is selected (ST304 or ST305), the ECU 11 notifies the driver of the selected lecture (ST306: notification means). More specifically, the ECU 11 displays the contents of the lecture on the panel 28 so that the driver can visually recognize it. At this time, the ECU 11 may output the contents of the lecture from the sound unit 29 as sound.

  Next, an example of a case where a lecture is given to a driver of “task start (following / constant speed) control with SET switch” (see: task number 2 in FIG. 6), which is one of the tasks of the ACC function, A simple lecture panel display example will be described with reference to FIGS.

  FIG. 13 shows an example of the panel display 28a when a lecture is carefully given to a driver who has a low understanding of the ACC function. As shown in FIG. 13, the panel display 28a includes an image showing the SET switch of the ACC operation unit 20 (when the torque switch 20b is pushed up) and “the settable range is 40 km / h to 100 km / h. Then, raise the car speed a little and then press the SET switch again. "

  On the other hand, FIG. 14 is an example of the panel display 28b when the ACC function is simply lectured for a driver who has a high understanding of the operation of the ACC function. As shown in FIG. 14, the panel display 28a displays a lecture content “start following” together with an image showing the SET switch of the ACC operation unit 20 (when the torque switch 20b is pushed up).

  As shown in FIGS. 13 and 14, the vehicle 1 can change the contents to be lectured according to the driver's understanding of the ACC function. Similarly, for each task described with reference to FIG. 8, either polite lecture content or simple lecture content is displayed according to the degree of understanding. In the present embodiment, the polite lecture content has been described in the case where the information amount of characters (text) is larger than the simple lecture content. However, not only the character information amount but also the information amount of the display image is increased. It is also possible to increase the amount of audio information. That is, it is sufficient to increase the amount of information of at least one of characters, display images, and sounds.

  The vehicle 1 configured as described above stores, in the storage unit 32, conversation history information T1, which is a history of conversations performed by the driver with the server 2, and uses the conversation history stored in the conversation history information T1. The degree of understanding of the driver with respect to the ACC function is determined, and the lecture content corresponding to the determination result is notified to the driver. For this reason, when the vehicle 1 gives a lecture to the driver, appropriate guidance can be given to the driver according to the degree of understanding of the ACC function.

  The conversation history information T1 stores conversations for each type of function such as the ACC function, and the ECU 11 determines the degree of understanding based on the number of conversations stored for each function. For this reason, even when the vehicle 1 has a plurality of functions other than the ACC function, the vehicle 1 can perform a lecture according to the degree of understanding of the driver for each function.

  Furthermore, the ECU performs a simple lecture according to the task (type of driving support) when the understanding degree of the ACC function is high, and when the understanding degree is low, the ECU is polite with more information than the simple lecture according to the task. Lectures. Therefore, an unnecessary lecture is not required for a driver with a high understanding level, and a sufficient lecture can be provided for a driver with a low understanding level.

  In the above embodiment, the degree of understanding of the ACC function has been described by using the cumulative operation count of the ACC function and the threshold value after the vehicle 1 is first driven. This is not a limitation. For example, a period for determining the degree of understanding of a predetermined function may be set as a predetermined period. For example, as shown in FIG. 15, the number of conversations related to the function from today to one month ago is stored in the storage unit 32 as conversation number information T4, and the function is understood using the number of conversations and the threshold value. The degree may be determined. With such a configuration, in the case of a driver who does not drive the vehicle 1 regularly, if there is a period of not driving for a while, the degree of understanding of the operation may be changed. Based on the degree of understanding according to the driving situation of the month, the driver can be lectured on the ACC function.

  In the above-described embodiment, the case where two lectures, a careful lecture and a simple lecture, are selectively used depending on whether the degree of understanding of the function is high or low has been described. However, the present invention is not limited to this. The degree of understanding of the function may be classified into three or more according to a plurality of thresholds, and a lecture corresponding to the classification may be notified. If comprised in this way, since a driver's understanding level can be subdivided and the function lecture according to the understanding level can be performed, it becomes possible to perform more advanced driving support to a driver.

  Furthermore, in the said embodiment, although the case where the driver who drives the vehicle 1 was demonstrated was demonstrated, the case where the vehicle 1 is shared by several drivers is also considered. In such a case, a means for acquiring an ID (identifying means) for specifying a driver is provided in the vehicle 1, and the conversation history information T1 and the conversation number information T2 are managed for each ID of the driver. Then, the driver's ID may be acquired when the vehicle 1 is operated, and a lecture corresponding to the driver's understanding level may be performed based on the conversation number information T2 corresponding to the driver ID. With this configuration, even when the vehicle 1 is shared by a plurality of drivers, it is possible to perform a lecture according to the degree of understanding of the functions of each driver.

  Furthermore, the threshold value for determining whether the degree of understanding is high or low based on the conversation number information may be set to a different threshold value depending on the function that supports driving. By comprising in this way, it becomes possible to set an appropriate threshold value according to the function which assists driving | operation.

  Furthermore, in the above-described embodiment, the case where the server 2 is equipped with a conversation system that has a conversation with the driver has been described. However, the present invention is not limited to this, and the conversation system may be installed in the vehicle 1. . If comprised in this way, it will become possible to implement this invention in the vehicle 1, a private information will not be transmitted outside, and the information security capability of the vehicle 1 can be improved.

  Furthermore, in the above embodiment, a simple lecture is given when the degree of understanding of the ACC function is high, and a careful lecture is given when the degree of understanding is low. However, the present invention is not limited to this. . For example, when the degree of understanding of the ACC function is high, it is assumed that there is a driver who wants to perform advanced settings, in other words, detailed setting of functions, because the degree of understanding is high. Such a driver is desired to have a simple lecture, not a polite lecture, but an advanced lecture, in other words, a lecture capable of setting functions in detail.

In order to deal with such a case, the vehicle 1 may be configured as follows.
In addition to simple and polite lectures, the lecture information T3 is associated with an advanced lecture that gives a lecture on how to make detailed settings in addition to simple and polite lectures. For example, when there is a conversation related to the maniac content of the function, the ECU stores the fact that the conversation has occurred, for example, as specific conversation information. When this specific information is stored, the ECU corresponds to the lecture corresponding to the task. As configured to select advanced lectures. With this configuration, a driver who has a high level of understanding of the driving support function and wants to perform advanced settings can perform an advanced lecture, and can provide a driver with a more advanced driving support function. .

  In the above embodiment, the case where the polite lecture and the simple lecture are all associated with the task of the ACC function has been described. However, the task with the polite lecture, the simple lecture is better. It is also possible to associate only one of the lectures with the task that should be performed, and the ECU 11 may notify the lecture associated with the task.

  The present invention is not limited to the above-described embodiments as they are, and can be embodied by modifying the constituent elements without departing from the scope of the invention in the implementation stage. Various inventions can be formed by appropriately combining a plurality of constituent elements disclosed in the above-described embodiments. For example, you may delete some components from all the components shown by embodiment mentioned above. Furthermore, you may combine the structure of different embodiment.

DESCRIPTION OF SYMBOLS 1 ... Vehicle, 2 ... Server, 11 ... ECU, 20 ... ACC operation part, 20a ... ACC switch, 20b ... Torque switch, 20c ... Cancel switch, 28 ... Panel, 28a, 28b ... Panel display example, 29 ... Audio | voice part, 30 ... Panel control unit, 32 ... Storage unit, H ... Handle, T1 ... Conversation history information, T2, T4 ... Conversation number information, T3 ... Lecture content

Claims (9)

A driving support system that provides driving support to a driver driving a vehicle,
A means of conversation with the driver,
Conversation history storage means for storing a history of conversations performed by the conversation means;
Determining means for determining the driver's understanding of the driving support function using the conversation history stored in the conversation history storage means;
Notification means for notifying the driver of driving support information according to the determination result of the determination means;
A driving support system comprising: The conversation history storage means stores the conversation history for each type of driving support function,
The determination means determines the degree of understanding based on the number of conversations stored for each driving support function.
The driving support system according to claim 1. The determination means determines which of the stored conversation numbers is a plurality of divisions with a plurality of thresholds,
The notifying means notifies driving support information corresponding to the category determined by the determining means;
The driving support system according to claim 2. The determination means determines that the understanding level of the driving support function is high when the stored conversation number is greater than or equal to a threshold value, and the understanding level of the driving support function is determined when the stored conversation number is less than the threshold value. Judge that it is low,
The driving support system according to claim 2. The driving support information notified by the notification means is
If the degree of understanding is high, it is first driving support information according to the type of driving support,
When the degree of understanding is low, it is the second driving assistance information having a larger amount of information than the first driving assistance information according to the type of the driving assistance.
The driving support system according to claim 4. The number of conversations is a cumulative number since the first driving of the vehicle was activated.
The driving support system according to any one of claims 2 to 5, wherein The number of conversations is a cumulative number within a predetermined period.
The driving support system according to any one of claims 2 to 5, wherein A specifying means for specifying a driver for driving the vehicle;
With
The conversation history storage means stores the conversation history for each driver specified by the specifying means,
The determination means determines an understanding level based on a conversation history corresponding to the driver;
The driving support system according to any one of claims 1 to 7, wherein Communication means for communicating with a server equipped with a conversation system for conversation with a driver, and communicating with the conversation system from the server,
With
A conversation between the server and the driver is performed via the communication means.
The driving support system according to any one of claims 1 to 8, wherein

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