JP5822020B2 - VEHICLE INFORMATION PROVIDING DEVICE AND VEHICLE INFORMATION PROVIDING SYSTEM - Google Patents

Description

  The present invention relates to a vehicle information providing apparatus and a vehicle information providing system that provide information related to energy saving driving to a driver and prompt the driver to save energy.

Conventionally, as this type of technology, for example, there is a vehicle information providing device described in Patent Document 1.
In this vehicle information providing device, driving support information is provided to the driver by providing a driving support function that displays information related to energy-saving driving (hereinafter also referred to as driving support information) on the display screen of the navigation device. ing.

JP 2011-180781 A

However, in the conventional vehicle information providing apparatus, driving support information is always displayed. For this reason, for example, when driving on a road with a long uphill slope, driving support information indicating that the energy consumption rate is low even if the driver tries to save energy, that is, driving per unit energy. Driving support information indicating that the distance is short is displayed. As a result, the driver feels uncomfortable with the driving support information in order to visually recognize the driving support information in a situation where the energy consumption rate is low even though the driver is trying to save energy. Confidence in support information could be reduced.
An object of the present invention is to improve the reliability of driving support information by focusing on the above points and suppressing the sense of discomfort with respect to driving support information.

  In order to solve the above-described problem, in one aspect of the present invention, when the variation in the energy consumption rate in the road section where the host vehicle is currently traveling is larger than a set threshold, driving support information that is information related to energy-saving driving is displayed. .

  In one aspect of the present invention, the variation in energy consumption rate is larger than the set threshold value, that is, in one aspect of the present invention, driving assistance information is displayed on a road section where there is a large margin for improving the energy consumption rate. A sense of incongruity with respect to the support information can be suppressed, and a sense of confidence in the driving support information can be improved. In other words, in one aspect of the present invention, the driving support information is not displayed in a road section where the variation in the energy consumption rate is equal to or less than the set threshold, that is, in one aspect of the present invention, the margin for improving the energy consumption rate is small. Thus, it is possible to suppress a sense of incongruity with respect to the driving support information and to improve the reliability with respect to the driving support information.

It is a figure which shows schematic structure of the information provision system S for vehicles. It is a figure for demonstrating the fuel consumption information database. 4 is a diagram for explaining a display screen of the display unit 10. FIG. It is a figure for demonstrating the fuel consumption management database. It is a figure for demonstrating the fuel consumption variation management database. It is explanatory drawing for demonstrating eco-drive assistance display judgment information. It is a flowchart showing a fuel consumption information accumulation process. It is a flowchart showing an eco-driving support function provision process. It is a flowchart showing a fuel consumption variation data generation process. It is a flowchart showing an eco-drive assistance display determination information generation process. It is a figure which shows schematic structure of the information provision system S for vehicles. It is a figure which shows schematic structure of the information provision system S for vehicles.

Next, an embodiment according to the present invention will be described with reference to the drawings.
In the present embodiment, the present invention provides the driver of the vehicle C with information (driving support information) regarding energy saving driving (hereinafter also referred to as eco driving), and improves the energy consumption rate of the vehicle C by providing the driving support information. The present invention is applied to the vehicle information providing system S that is made possible. As the driving support information, there is information indicating the achievement degree of eco driving (energy saving driving). Examples of the information representing the degree of achievement include information representing the degree of achievement of gentle start / acceleration, information representing the degree of achievement of cruise with suppressed acceleration / deceleration, information representing the degree of achievement of gentle deceleration, and the like. Moreover, as driving support information, there is also general advice information in addition to the information indicating the achievement level described above. As this advice information, for example, there are messages such as “Let's accelerate with a soft accelerator” and “Let's cruise with little speed change”. The vehicle C is a vehicle that uses an internal combustion engine (engine) as a power source. In this case, the energy consumption rate is assumed to be a fuel consumption rate (hereinafter also referred to as fuel efficiency) representing the travel distance of the host vehicle C per unit capacity of fuel of the internal combustion engine.

  In the present embodiment, an example in which a vehicle having an internal combustion engine as a power source is employed as the vehicle C has been described, but other configurations may be employed. For example, it is good also as a structure which employ | adopts the vehicle which uses an electric motor (motor) as a motive power source. In this case, as the energy consumption rate, a power consumption rate representing the travel distance of the host vehicle C per unit capacity of the electric motor is employed.

(Constitution)
FIG. 1 is a diagram showing a schematic configuration of a vehicle information providing system S. As shown in FIG.
As shown in FIG. 1, the vehicle information provision system S includes a navigation device 1 mounted on a plurality of vehicles C and an information provision determination device 2 included in the telematics center B. The navigation device 1 and the information provision determination device 2 transmit and receive information via the communication path 3.

(Configuration of the navigation device 1)
As shown in FIG. 1, the navigation apparatus 1 includes a vehicle speed detection unit 4, a fuel injection amount detection unit 5, a GPS (Global Positioning System) reception unit 6, a map information storage unit 7, a fuel consumption information database 8, a controller 9, and a display unit. 10 and a telematics communication unit 11.
The vehicle speed detection unit 4 detects the vehicle speed of the host vehicle C. And the vehicle speed detection part 4 outputs the information showing the detected vehicle speed to the controller 9 mentioned later.
The fuel injection amount detection unit 5 detects the injection amount of fuel injected into the cylinder chamber of the internal combustion engine of the host vehicle C (hereinafter also referred to as fuel injection amount). Then, the fuel injection amount detection unit 5 outputs information representing the detected fuel injection amount to the controller 9.

The GPS receiver 6 detects the current position of the host vehicle C. Then, the GPS receiver 6 outputs information representing the detected current position to the controller 9.
The map information storage unit 7 stores map information of an area where the host vehicle C travels. As the map information, information including information such as positions and shapes of a plurality of small sections (hereinafter also referred to as road sections) set by dividing roads is adopted. As the road section, for example, a link among nodes and links set along the road to express a road traffic network can be adopted. A link is a line segment which connects a node (connection point) and a node.

FIG. 2 is a diagram for explaining the fuel consumption information database 8.
As shown in FIG. 2, the fuel efficiency information database 8 includes a plurality of records (hereinafter referred to as fuel efficiency) for storing the average fuel efficiency (average value of fuel efficiency) of the host vehicle C calculated by the controller 9 as described later. (Also called information). Each record uses the road link ID representing the road section for which the average fuel consumption is calculated, the date and time when the average fuel consumption is calculated, the day of the week (whether it is a weekday or a holiday), and the average fuel consumption as field values.

  The controller 9 includes an A / D (Analog to Digital) conversion circuit, a D / A (Digital to Analog) conversion circuit, a CPU (Central Processing Unit), a ROM (Read Only Memory), a RAM (Random Access Memory), and the like. Integrated circuit. The ROM stores one or more programs that realize various processes. The CPU executes each process according to one or more programs stored in the ROM. And the controller 9 is provided with the fuel consumption calculating part 9a, the eco-driving assistance information generation part 9b, and the route guidance information generation part 9c. Here, these 9a to 9c are realized by a program.

  The fuel consumption calculation unit 9a calculates the average fuel consumption of the host vehicle C based on the information output from the vehicle speed detection unit 4, the fuel injection amount detection unit 5 and the GPS reception unit 6, and the map information stored in the map information storage unit 7. The fuel consumption information accumulation process calculated for each road section is executed. And the fuel consumption calculating part 9a memorize | stores the calculated average fuel consumption in the fuel consumption information database 8 with road link ID showing the road area which calculated the average fuel consumption, the date and time which calculated average fuel consumption, and a day of the week.

  The eco-driving support information generation unit 9b outputs information output from the GPS receiving unit 6, map information stored in the map information storage unit 7, records stored in the fuel consumption information database 8 (fuel consumption information), and the vehicle C. Based on information indicating the vehicle type (hereinafter also referred to as vehicle type identification information), an eco-driving support function providing process for receiving eco-driving support display determination information (see FIG. 6 described later) from the information providing determination device 2 is executed. Examples of the vehicle type identification information include information for identifying a vehicle type such as a normal automobile, a medium-sized automobile, and a large automobile. The eco driving support display determination information is information indicating whether or not driving support information is displayed on the display unit 10. Then, the eco driving support information generation unit 9b outputs an eco driving support information display permission command or an eco driving support information display prohibition command to the route guidance information generation unit 9c based on the received eco driving support display determination information. The eco driving support information display permission command is a control command for displaying driving support information on a part of the display screen of the display unit 10 (for example, the right side). The eco-driving support information display prohibition command is a control command for prohibiting the display of the driving support information on the display screen of the display unit 10.

  The route guidance information generation unit 9c searches for a guidance route to the destination set by the driver based on the information output from the GPS reception unit 6 and the map information stored in the map information storage unit 7. For example, the destination is set by operating an operation unit (not shown) of the navigation device 1. Then, the route guidance information generation unit 9c displays guidance information for guiding the host vehicle C to the destination on the entire display screen when the eco driving support information generation unit 9b outputs the eco driving support information display prohibition command. A control command (hereinafter also referred to as a guidance information display command) is output to the display unit 10. As the guidance information, information that displays the searched guidance route and the current position of the host vehicle C is employed. Thereby, for example, when driving support information is already being displayed on the display screen of the display unit 10, the driving support information being displayed is deleted. On the other hand, when the eco-driving support information generating unit 9b outputs an eco-driving support information display permission command, the route guidance information generating unit 9c also displays driving support information in addition to the guidance information on a part of the display screen of the display unit 10 ( A control command (hereinafter also referred to as a support information display command) to be displayed on the right side is output to the display unit 10.

  As a result, the navigation device 1 searches for a guidance route to the destination set by the driver, and displays guidance information for guiding the searched vehicle C to the destination on the display screen of the display unit 10 (hereinafter referred to as a route). In addition to the original function of the device (also called guidance), it has a driving support function. The driving support function is a function for calculating the average fuel consumption of the host vehicle C and displaying information on fuel saving (driving support information) on the display screen of the display unit 10 based on the calculated average fuel consumption.

  Further, the controller 9 turns on the driving support function execution flag when the driver calls the driving support function. The driving support function is called by, for example, operating an operation unit (not shown) of the navigation device 1. The driving support function execution flag is a flag indicating whether or not the driver is calling the driving support function. The controller 9 sets the driving support function execution flag to the OFF state when the driver does not call the driving support function or when the driver terminates after calling the driving support function.

FIG. 3 is a diagram for explaining a display screen of the display unit 10.
When the controller 9 outputs a guidance information display command, the display unit 10 displays the guidance information on the entire display screen arranged in the passenger compartment of the host vehicle C as shown in FIG. . Further, when the controller 9 outputs a support information display command, the display unit 10 arranges driving support information in the passenger compartment of the host vehicle C in accordance with the support information display command as shown in FIG. Displayed on a part (right side) of the displayed screen.

In this embodiment, when the controller 9 outputs a support information display command, the guide information is displayed near the left side of the display screen of the display unit 10 and the driving support information is displayed on the right side of the display screen of the display unit 10. Although an example of displaying is shown, other configurations may be adopted. For example, the display of the guidance information may be deleted, and the driving support information may be displayed on the entire display screen of the display unit 10.
Moreover, although the example which displays driving assistance information on the display part 10 of the navigation apparatus 1 was shown in this embodiment, another structure can also be employ | adopted. For example, the driving support information may be displayed on a part of a meter display or a dedicated display.

The telematics communication unit 11 transmits the information generated by the controller 9 to the information provision determination device 2 via the communication path 3. In addition, the telematics communication unit 11 acquires the information transmitted by the information provision determination device 2 via the communication path 3 and transmits the information to the information provision determination device 2.
In the present embodiment, the navigation device 1 is realized by a dedicated device including the GPS receiving unit 6, the map information storage unit 7, the fuel consumption information database 8, the controller 9, the display unit 10, and the telematics communication unit 11. Although shown, other configurations may be employed. For example, you may comprise with the portable navigation with which the same function was given, a smart phone, etc.

(Configuration of information provision determination device 2)
The information provision determination apparatus 2 includes a fuel consumption management database 12, a fuel consumption variation management database 13, and a fuel consumption variation management unit 14.
FIG. 4 is a diagram for explaining the fuel consumption management database 12.
As shown in FIG. 4, the fuel consumption management database 12 includes fuel consumption information (road link ID, date / time, day of week, average fuel consumption) received by the fuel consumption variation management unit 14 from the navigation devices 1 of a plurality of vehicles C, as will be described later. It consists of a plurality of records for storing vehicle type identification information. Each record uses the road link ID, date, day of the week, and average fuel consumption included in the received fuel consumption information, and vehicle type identification information (ordinary vehicle, medium-sized vehicle, large vehicle) received together with the fuel consumption information as field values. Thereby, the fuel consumption management database 12 stores a plurality of fuel consumption information (information including average fuel consumption) for each road section.

FIG. 5 is a diagram for explaining the fuel consumption variation management database 13.
As shown in FIG. 5, the fuel consumption variation management database 13 calculates the average fuel consumption average (hereinafter also referred to as “multiple vehicle average fuel consumption”) μ of a plurality of vehicles C calculated by the fuel consumption variation management unit 14 as described later. It consists of a plurality of records for storing each time. Each record includes a road link ID that represents a road section for which the average multiple vehicle fuel consumption μ is calculated, vehicle type identification information that represents the vehicle type of the vehicle C for which multiple vehicle average fuel efficiency μ is calculated, a time zone in which the multiple vehicle average fuel consumption μ is calculated, The eco-driving support flag and the threshold fuel consumption are set as field values. The eco driving support flag is a flag indicating whether or not driving support information is displayed on the display screen of the display unit 10. When the eco-driving support flag is in the OFF state, it is determined that display of driving support information on the display unit 10 is prohibited (see FIG. 3A). When the eco-driving support flag is in the ON state, it is determined that the driving support information is displayed on a part (right side) of the display screen of the display unit 10 (see FIG. 3B). As the time zone, for example, one set every 1 hour such as 10:00 to 11:00, 11:00 to 12:00 is adopted. The threshold fuel consumption is a threshold for determining whether or not the driver of the vehicle C is performing fuel-saving driving (eco driving).

  The fuel consumption variation management unit 14 receives fuel consumption information and vehicle type identification information from the navigation devices 1 of the plurality of vehicles C, and executes fuel consumption variation data generation processing for storing the reception results in the fuel consumption management database 12. Then, the fuel consumption variation management unit 14 sets the eco driving support flag and the threshold fuel consumption for each road section based on the record stored in the fuel consumption management database 12.

  Here, for example, in a road section (congested road, narrow street, steep slope, etc.) where the speed of the vehicle C is low, there are generally many other vehicles in the vicinity of the vehicle C. Therefore, it is relatively difficult for the driver of the vehicle C to freely increase or decrease the vehicle speed of the vehicle C. Therefore, the difference in driving among the drivers is small, and the difference (variation) in fuel consumption between the vehicles C is small. As a result, even if driving support information is provided to the driver, it is difficult to improve the fuel consumption of the vehicle C. Further, in a road section where the vehicle speed of the vehicle C is low, driving support information indicating that the fuel consumption is low (bad) even if the driver tries to save fuel, that is, driving indicating that the travel distance per unit fuel is short. Support information will be displayed. As a result, the driver visually recognizes the driving support information indicating that the fuel consumption is low (bad) in spite of the fuel saving driving. Therefore, the driver feels uncomfortable with the driving support information, and the reliability of the driving support information is reduced.

  On the other hand, in road sections where the vehicle C has a high vehicle speed (non-congested roads, arterial roads, highways, etc.), there are generally few other vehicles in the vicinity of the vehicle C. Therefore, the driver of the vehicle C can increase and decrease the vehicle speed of the vehicle C relatively freely. Therefore, the difference in driving among the drivers is large, and the difference (variation) in fuel consumption between the vehicles C increases. As a result, it is expected that the fuel efficiency of the vehicle C can be improved by providing the driving support information to the driver. Further, in a road section where the vehicle speed of the vehicle C is high, driving assistance information indicating that fuel efficiency is high (good) by the driver trying to save fuel, that is, driving indicating that the travel distance per unit fuel is long. Support information will be displayed. As a result, the driver visually recognizes the driving support information indicating that the fuel consumption is high (good) when fuel saving driving is intended. Therefore, the driver does not feel uncomfortable with the driving support information, and the reliability of the driving support information is improved.

  Therefore, the fuel consumption variation management unit 14 turns on the eco-driving support flag only in the road section where the variation in fuel consumption among the vehicles C is large. On the other hand, the fuel consumption variation management unit 14 sets the eco-driving support flag to the OFF state in a road section where the variation in fuel consumption among the vehicles C is small. The setting of the eco-driving support flag and the threshold fuel efficiency is executed by classifying by time zone, day of the week, and vehicle type identification information. Subsequently, the fuel consumption variation management unit 14 sets the eco-driving support flag, the threshold fuel consumption, the fuel consumption variation management database 13 together with the road link ID, the time zone, the day of the week, and the vehicle type identification information representing the road section in which the average vehicle fuel consumption is calculated. Remember me.

FIG. 6 is an explanatory diagram for explaining the eco-driving support display determination information.
Further, when the fuel consumption variation management unit 14 receives the fuel consumption information and the vehicle type identification information from the navigation device 1, the fuel consumption variation management unit 14 executes an eco-driving support display determination information generation process. Then, the fuel consumption variation management unit 14 reads out from the fuel consumption variation management database 13 (see FIG. 5) a record including the same road link ID, date and time, day of the week, and vehicle type identification information as the received fuel consumption information. Subsequently, the fuel consumption variation management unit 14 saves the vehicle type identification information, the date and time, and the day of the week from the read record. Eco driving support display determination information (information indicating whether or not to display the driving support information on the display unit 10) To the navigation device 1.

(Calculation processing)
Next, fuel consumption information accumulation processing executed by the fuel consumption calculation unit 9a of the controller 9 will be described. The fuel consumption information accumulation process is executed when the driver calls the driving support function of the navigation device 1 and the driving support function execution flag is turned on.
FIG. 7 is a flowchart showing fuel consumption information accumulation processing.
As shown in FIG. 7, in step S <b> 101, the fuel consumption calculation unit 9 a acquires information representing the vehicle speed output from the vehicle speed detection unit 4 and information representing the fuel injection amount output from the fuel injection amount detection unit 5. Subsequently, the fuel consumption calculation unit 9a accumulates the acquired information in the RAM.

  Subsequently, the process proceeds to step S102, and the fuel consumption calculation unit 9a determines whether or not the road link ID (hereinafter also referred to as the current road link ID) representing the road section in which the host vehicle C is currently traveling has changed. Specifically, the fuel consumption calculation unit 9a detects the current road link ID based on the information output from the GPS receiving unit 6 and the map information stored in the map information storage unit 7. Subsequently, the fuel consumption calculation unit 9a determines whether or not the road link ID detected this time is different from the road link ID detected when the step S102 was executed last time (hereinafter also referred to as the previously detected road link ID). . If the fuel link calculation unit 9a determines that the currently detected road link ID is different from the previously detected road link ID (Yes), the fuel consumption calculation unit 9a determines that the road link ID has changed, and proceeds to step S103. On the other hand, if it is determined that the road link ID detected this time is the same as the previously detected road link ID (No), the fuel efficiency calculation unit 9a determines that the road link ID has not changed, and the step S101 is performed. Return to.

Thereby, the fuel consumption calculation part 9a repeatedly performs the flow of said step S101-> S102. And the fuel consumption calculating part 9a accumulate | stores the time series data of the vehicle speed of the own vehicle C, and the time series data of the fuel injection quantity in RAM for every road area.
In step S103, the fuel consumption calculation unit 9a is based on the information accumulated in the RAM in step S101 (the time series data of the vehicle speed of the host vehicle C and the time series data of the fuel injection amount for each road section). C average fuel efficiency is calculated for each road section.

  Subsequently, the process proceeds to step S104, where the fuel consumption calculation unit 9a determines the road link ID (the road link ID detected last time) representing the road section in which the host vehicle C was traveling immediately before, the current date and time, the current day of the week, and A record including the average fuel consumption calculated in step S103 is generated. Subsequently, the fuel consumption calculation unit 9a stores the generated record (fuel consumption information) in the fuel consumption information database 8 (see FIG. 2).

  Then, it transfers to step S105 and the fuel consumption calculating part 9a determines whether the driver | operator complete | finished the driving assistance function of the navigation apparatus 1. FIG. Specifically, the fuel consumption calculation unit 9a determines whether or not the driving support function execution flag is in an OFF state. If the fuel efficiency calculation unit 9a determines that the driving support function execution flag is in the OFF state (Yes), the fuel efficiency calculation unit 9a determines that the driving support function has ended, and ends the calculation process. On the other hand, if it is determined that the driving support function execution flag is in the ON state (No), the fuel efficiency calculation unit 9a determines that the driving support function has not ended, and the process proceeds to step S101.

  Next, the eco-driving support function providing process executed by the eco-driving support information generating unit 9b of the controller 9 will be described. The eco-driving support function providing process is a process that is executed when the driver calls the driving support function of the navigation device 1 and the driving support function execution flag is turned on, and is performed in parallel with the fuel consumption information accumulation process. It is processing.

FIG. 8 is a flowchart showing the eco-driving support function providing process.
As shown in FIG. 8, in step S201, the eco-driving support information generation unit 9b specifies a road section (hereinafter also referred to as a determination road section) for determining whether or not it is necessary to provide a driving support function. Specifically, the eco-driving support information generating unit 9b, when the route guidance is being performed, the road (the all road sections existing on the guide route or a certain number (for example, 10) road section) is set as the judgment road section. Alternatively, the eco-driving support information generation unit 9b selects the roads around the own vehicle C (all road sections existing within a certain distance (for example, 1 km) from the own vehicle C or a certain number (for example, 10) road sections). It is determined as a road section. Alternatively, the eco-driving support information generation unit 9b includes roads that exist in the traveling direction of the host vehicle C (all road sections existing in the traveling direction of the host vehicle C that are within a certain distance (1 km) from the host vehicle C). Or a certain number (10) of road sections) is determined as a judgment road section.

Subsequently, the process proceeds to step S202, and the eco-driving support information generation unit 9b uses the fuel consumption information database 8 (see FIG. 2) as a record (fuel consumption information) including the road link ID representing the determined road section identified in step S201. ). Subsequently, the eco-driving support information generation unit 9 b transmits the read fuel efficiency information and vehicle type identification information (ordinary vehicle, medium-sized vehicle, large vehicle) indicating the vehicle type of the host vehicle C to the information provision determination device 2.
Subsequently, the process proceeds to step S203, and the eco-driving support information generation unit 9b receives from the information providing determination device 2 the eco-driving support display determination information including the road link ID representing the determined road section specified in step S201 ( (See FIG. 6).

  Subsequently, the process proceeds to step S204, and the eco-driving support information generation unit 9b determines whether it is necessary to provide the driving support function in the road section where the host vehicle C is currently traveling. Specifically, the current road link ID is detected based on the information output from the GPS receiver 6 and the map information stored in the map information storage unit 7. Subsequently, the eco-driving support information generation unit 9b includes the eco-driving support display determination information including the detected current road link ID among the eco-driving support display determination information (see FIG. 6) received in step S203. It is determined whether or not the driving support flag is in an ON state. If the eco-driving support information generation unit 9b determines that the eco-driving support flag is in an ON state (Yes), it is necessary to provide a driving support function in the road section where the host vehicle C is currently traveling. And the process proceeds to step S205. On the other hand, when the eco-driving support information generation unit 9b determines that the eco-driving support flag is in an OFF state (Yes), it is not necessary to provide a driving support function in the road section where the host vehicle C is currently traveling. And the process proceeds to step S207.

  In step S205, the eco-driving support information generation unit 9b includes a record including the road link ID detected in step S204 among the records (fuel consumption information) stored in the fuel consumption information database 8 (see FIG. 2). It is determined whether or not the average fuel consumption value of (fuel consumption information) is higher than the threshold fuel consumption (whether the average fuel consumption is better than the threshold fuel consumption). Here, as the threshold fuel consumption, the threshold fuel consumption of the eco driving support display determination information including the road link ID detected in step S204 in the eco driving support display determination information (see FIG. 6) received in step S203. Is adopted. Specifically, the eco-driving support information generation unit 9b determines whether the average fuel efficiency is greater than the threshold fuel efficiency. If the eco-driving support information generation unit 9b determines that the average fuel efficiency is greater than the threshold fuel efficiency (Yes), the eco-driving support information generation unit 9b determines that the average fuel efficiency is higher (good) than the threshold fuel efficiency, and the process proceeds to step S206. On the other hand, when it is determined that the average fuel consumption is less than the threshold fuel consumption (No), the eco-driving support information generation unit 9b determines that the average fuel consumption is lower (bad) than the numerical value of the threshold fuel consumption, and the process proceeds to step S207. .

In step S206, the eco-driving support information generation unit 9b displays the driving support information on a part (right side) of the display screen of the display unit 10 (see FIG. 3B). After outputting to the guidance information generation part 9c, it transfers to step S208.
On the other hand, in step S207, the eco-driving support information generation unit 9b prohibits the display of the driving support information on the display screen of the display unit 10 (see FIG. 3A). After outputting to the information generation part 9c, it transfers to the said step S208.

  In step S208, the eco-driving support information generation unit 9b determines whether or not the current road link ID has changed. Specifically, the eco-driving support information generation unit 9b detects the current road link ID based on the information output from the GPS reception unit 6 and the map information stored in the map information storage unit 7. Subsequently, the eco-driving support information generation unit 9b determines whether or not the current road link ID detected this time is different from the current road link ID detected when this step S208 was executed last time. And when it determines with the present road link ID detected this time differing from the present road link ID detected last time (Yes), the eco-drive assistance information generation part 9b determines with the present road link ID having changed, step The process proceeds to S209. On the other hand, if the eco-driving support information generation unit 9b determines that the current road link ID detected this time is the same as the current road link ID detected last time (No), the current road link ID is not changed. Determine and execute this determination again.

  In step S209, the eco-driving support information generation unit 9b determines whether or not the driver has finished the driving support function of the navigation device 1. Specifically, the eco-driving support information generation unit 9b determines whether or not the driving support function execution flag is in an OFF state. Then, when it is determined that the driving support function execution flag is in the OFF state (Yes), the eco driving support information generation unit 9b determines that the driving support function is ended, and ends the calculation process. On the other hand, when it is determined that the driving support function execution flag is in the ON state (No), the eco driving support information generation unit 9b determines that the driving support function has not ended, and the process returns to step S201.

  Thereby, the eco-driving support information generation unit 9b repeatedly executes the above flow from step S201 every time the current road link ID changes. Therefore, when the host vehicle C enters the road section, the eco driving support information generation unit 9b displays the driving support information in the road section on a part (right side) of the display screen (Step S206). (Refer FIG.3 (b)). Accordingly, for example, it is possible to alert the driver of the vehicle C that it is necessary to drive (fuel-saving driving) before the vehicle C travels on a road section where there is a margin for improving fuel efficiency.

  In the present embodiment, the example in which the driving support information in the road section is displayed on a part of the display screen (on the right side) when the host vehicle C enters the road section is shown, but other configurations are adopted. You can also. For example, the driving support information in the road section may be displayed on a part (right side) of the display section before the own vehicle C enters the road section (immediately before entering).

Next, fuel consumption variation data generation processing executed by the fuel consumption variation management unit 14 of the information provision determination device 2 will be described. The fuel consumption variation data generation process is executed when any one of the navigation devices 1 of the plurality of vehicles C transmits the fuel consumption information and the vehicle type identification information.
FIG. 9 is a flowchart showing fuel consumption variation data generation processing.
As shown in FIG. 9, in step S301, the fuel consumption variation management unit 14 transmits fuel consumption information (information including road link ID, date / time, day of the week, and average fuel consumption) transmitted from any of the navigation devices 1 of the plurality of vehicles C. And vehicle type identification information is received. Subsequently, the fuel consumption variation management unit 14 creates a record (road link ID, vehicle type identification information, date / time, day of the week, and average fuel consumption) using the received fuel consumption information and vehicle type identification information as field values. Subsequently, the fuel consumption variation management unit 14 stores the created record in the fuel consumption management database 12 (see FIG. 4). Accordingly, the fuel consumption variation management unit 14 sequentially stores the fuel consumption information and the vehicle type identification information received from the navigation devices 1 of the plurality of vehicles C in the fuel consumption management database 12. The fuel consumption management database 12 stores a plurality of fuel consumption information for each road section.

  Subsequently, the process proceeds to step S302, and the fuel consumption variation management unit 14 among the records stored in the fuel consumption management database 12 (see FIG. 4), the road link ID, the time zone, the vehicle type identification information, and the field value of the day of the week. Sequentially select the same record group. Then, the fuel consumption variation management unit 14 sets a record group ID for each selected record group. As the record group ID, for example, a numerical value of 1 to m (m is the total number of record groups) can be adopted. The fuel consumption variation management unit 14 initializes the variable i and stores it as 0.

Subsequently, the process proceeds to step S303, and the fuel consumption variation management unit 14 adds 1 to the stored variable i.
Subsequently, the process proceeds to step S304, where the fuel consumption variation management unit 14 calculates the average (average fuel consumption) of a plurality of vehicles C for each road section based on the records stored in the fuel consumption management database 12 (see FIG. 4). Average vehicle multiple fuel consumption) μ and standard deviation σ are calculated. Specifically, the fuel consumption variation management unit 14 selects a record group in which the same record group ID as the value of the stored variable i is set from among the records stored in the fuel consumption management database 12. Subsequently, the fuel consumption variation management unit 14 calculates an average value (average vehicle multiple fuel consumption) μ and standard deviation σ of the average fuel consumption included in the selected record group.

  Subsequently, the process proceeds to step S305, where the fuel consumption variation management unit 14 determines whether or not it is necessary to provide a driving support function for each combination of road section (road link ID), time zone, vehicle type (vehicle type identification information), and day of the week. judge. Specifically, the fuel consumption variation management unit 14 includes records having the same record group ID as the value of the variable i among the records stored in the fuel consumption management database 12 (see FIG. 4). It is determined whether or not the variation in fuel consumption of the plurality of vehicles C is greater than a set threshold value. As the variation in fuel consumption, the added value μ + σ of the average vehicle multiple fuel consumption μ calculated in step S304 and the standard deviation σ is employed. Further, as the setting threshold value, a multiplication value μ × α of the average vehicle fuel efficiency μ calculated in step S304 and a preset setting value α (> 1) is adopted. Thereby, in the combination of the road section (road link ID), time zone, vehicle type (vehicle type identification information), and day of week included in the record represented by the same record group ID as the value of the variable i, the driving support function is provided. Determine whether it is necessary. When the fuel consumption variation management unit 14 determines that the fuel consumption variation μ + σ of the plurality of vehicles C is larger than the set threshold μ × α (Yes), it determines that the driving support function needs to be provided, The process proceeds to step S306. On the other hand, when it is determined that the fuel consumption variation μ + σ of the plurality of vehicles C is equal to or smaller than the set threshold value μ × α (No), the fuel consumption variation management unit 14 determines that it is not necessary to provide the driving support function. The process proceeds to step S307.

In step S306, the fuel consumption variation management unit 14 creates a record of the fuel consumption variation management database 13 (see FIG. 5). Subsequently, the fuel consumption variation management unit 14 sets the eco driving support flag of the created record to the ON state, and then proceeds to step S308.
On the other hand, in step S307, the fuel consumption variation management unit 14 creates a record of the fuel consumption variation management database 13 (see FIG. 5). Subsequently, the fuel consumption variation management unit 14 sets the eco-driving support flag of the created record to the OFF state, and then proceeds to step S308.

  In step S308, the fuel consumption variation management unit 14 sets the threshold fuel consumption of the record (see FIG. 5) created in step S306 or S307. As the threshold fuel consumption, the multiple vehicle average fuel consumption μ calculated in step S304, or the addition value (σ × β + μ) of the multiple vehicle average fuel consumption μ multiplied by the standard deviation σ and a preset set value β is adopted. .

  Subsequently, the process proceeds to step S309, and the fuel consumption variation management unit 14 sets the road link ID, vehicle type identification information, time zone, and day of the record (see FIG. 5) created in step S306 or S307. As the road link ID, the vehicle type identification information, the time zone, and the day of the week, the road link ID, the vehicle type identification information, the time zone, and the day of the week included in the record group used for calculating the average fuel consumption μ of the plurality of vehicles in the step S304. adopt. Subsequently, the fuel consumption variation management unit 14 stores the set record in the fuel consumption variation management database 13.

  Subsequently, the process proceeds to step S310, and the fuel consumption variation management unit 14 determines whether or not the variable i is equal to or greater than the total number m of record groups. When the fuel consumption variation management unit 14 determines that the variable i is equal to or greater than the total number m of the record group (Yes), the calculation process is terminated. On the other hand, if the fuel consumption variation management unit 14 determines that the variable i is less than the total number m of the record group (No), the process returns to step S303.

Next, the eco-driving support display determination information generation process executed by the fuel efficiency variation management unit 14 of the telematics center B will be described. The eco-driving support display determination information generation process is executed when the controller 9 transmits fuel consumption information and vehicle type identification information.
FIG. 10 is a flowchart showing an eco-driving support display determination information generation process.
As shown in FIG. 10, in step S401, the fuel consumption variation management unit 14 receives the fuel consumption information and the vehicle type identification information transmitted by the navigation device 1.

Subsequently, the process proceeds to step S402, and the fuel consumption variation management unit 14 receives the same road link ID, date and time (time zone represented by the date and time), day of the week, and vehicle type received together with the fuel consumption information as received in step S401. A record including the identification information is read from the fuel consumption variation management database 13 (see FIG. 5).
Subsequently, the process proceeds to step S403, and the fuel consumption variation management unit 14 uses the record read in step S402 excluding the vehicle type identification information, the date and time, and the day of the week as eco-driving support display determination information (see FIG. 6). After transmitting to 1, this calculation process is terminated. Here, the transmission destination of the eco-driving support display determination information is the navigation device 1 of the vehicle C that is the transmission source of the fuel efficiency information and the vehicle type identification information received in step S401.

(Operation other)
Next, the operation of the vehicle information providing system S will be described.
First, the setting operation of the eco-driving support flag and the threshold fuel consumption will be described.
It is assumed that any one of the navigation devices 1 of the plurality of vehicles C transmits fuel consumption information and vehicle type identification information to the information provision determination device 2. Then, the information provision determination device 2 stores a record having the fuel consumption information and the vehicle type identification information as field values in the fuel consumption management database 12 (see FIG. 4). Subsequently, the information provision determination device 2 calculates the average of multiple vehicles for each record having the same road link ID, vehicle type identification information, time zone, and day of week field values among the records stored in the fuel consumption management database 12. The fuel consumption μ and the standard deviation σ are calculated. As a result, the multiple vehicle average fuel consumption μ and the standard deviation σ are calculated for each combination of road section (road link ID), vehicle type identification information, time zone, and day of week (steps S301 to S304 in FIG. 9).

  Here, it is assumed that there is a road section where the vehicle speed is high and the fuel consumption variation among the vehicles C is large. In this road section, it is assumed that the calculated fuel consumption variation μ + σ of the plurality of vehicles C is larger than the set threshold value μ × α (Yes in step S305 in FIG. 9). Then, the information provision determination device 2 sets the eco driving support flag to the ON state (step S306 in FIG. 9), and creates a record with the threshold fuel consumption as μ (step S308 in FIG. 9). Then, the information provision determination device 2 includes the road record ID representing this road section in the created record and stores it in the fuel consumption variation management database 13 (see FIG. 5) (step S309 in FIG. 9).

On the other hand, it is assumed that there is a road section where the vehicle speed is low and the variation in fuel consumption among the vehicles C is small. In the road section, it is assumed that the calculated fuel consumption variation μ + σ of the plurality of vehicles C is equal to or less than the set threshold value μ × α (No in step S305 in FIG. 9). Then, the information provision determination device 2 sets the eco-driving support flag to the OFF state (step S307 in FIG. 9), and creates a record with the threshold fuel consumption as μ (step S308 in FIG. 9). Then, the information provision determination device 2 includes the road record ID representing this road section in the created record and stores it in the fuel consumption variation management database 13 (see FIG. 5) (step S309 in FIG. 9).
Thereby, an eco-driving support flag and a threshold fuel consumption are set for each road section.

Next, the operation of providing guidance information and driving support information will be described.
It is assumed that the driver of the vehicle C1 calls the driving support function while the vehicle C (hereinafter also referred to as the vehicle C1) is traveling. Then, the navigation device 1 of the vehicle C1 specifies a determination road section for determining whether or not it is necessary to provide the driving support function (step S201 in FIG. 8). Subsequently, the navigation device 1 of the vehicle C1 reads a record (fuel efficiency information) including a road link ID representing the identified determination road section from the fuel efficiency information database 8 (see FIG. 2). Subsequently, the navigation device 1 of the vehicle C1 transmits the read fuel consumption information and the vehicle type identification information indicating the vehicle type of the vehicle C1 to the information provision determination device 2 (step S202 in FIG. 8).

  When the navigation device 1 of the vehicle C1 transmits the fuel consumption information and the vehicle type identification information, the information provision determination device 2 receives the fuel consumption information and the vehicle type identification information (step S401 in FIG. 10). Subsequently, the information provision determination device 2 records the same road link ID, date and time (time zone represented by the date and time), day of the week, and vehicle type identification information received together with the fuel efficiency information as the received fuel efficiency information. Read from the management database 13 (see FIG. 5) (step S402 in FIG. 10). Subsequently, the information provision determination device 2 transmits the information obtained by removing the vehicle type identification information, the date and the day of the week from the read record to the navigation device 1 of the vehicle C1 as eco-driving support display determination information (see FIG. 6) (FIG. 10). Step S403). And if the information provision determination apparatus 2 transmits eco-driving support display determination information, the navigation apparatus 1 of the vehicle C1 receives this eco-driving support display determination information (step S203 in FIG. 8).

  Here, it is assumed that the road section in which the vehicle C1 is currently traveling is a road section with a high vehicle speed and a large variation in fuel consumption among the vehicles C. Then, in the received eco-driving support display determination information (see FIG. 6), it is assumed that the eco-driving support flag of the eco-driving support display determination information including the current road link ID is ON (step S204 in FIG. 8). , Yes). That is, it is assumed that, among the fuel efficiency information (average fuel efficiency) stored in the fuel efficiency management database 12, the average fuel efficiency variation μ + σ in the road section where the vehicle C1 is currently traveling is greater than the set threshold μ × α. The average of the records including the current road link ID among the records stored in the fuel efficiency information database 8 (see FIG. 2) is low because the driving skill of the driver of the vehicle C1 is low. It is assumed that the fuel consumption is lower (bad) than the threshold fuel consumption (No in step S205 in FIG. 8). Then, the navigation device 1 (eco driving support information generation unit 9b) of the vehicle C1 outputs an eco driving support information display permission instruction to the route guidance information generation unit 9c (step S206 in FIG. 8).

  When the navigation device 1 outputs an eco-driving support information display permission command, the route guidance information generation unit 9c outputs a support information display command to the display unit 10. When the route guidance information generation unit 9c outputs a support information display command, the display unit 10 displays the guidance information on the left side of the display screen and displays the driving support information on the right side of the display screen (FIG. 3 ( b)).

  As described above, in the present embodiment, when the fuel efficiency variation μ + σ of the plurality of vehicles C is larger than the set threshold μ × α, the eco-driving support flag is turned on, and the driving support information is displayed on the display screen of the display unit 10. The display is on the right side (steps S305 and S306 in FIG. 9). Therefore, in a road section where the variation μ + σ is larger than the set threshold μ × α and there is a margin for improving fuel efficiency, driving assistance information is displayed, and the driver tries to save fuel, thereby improving the fuel efficiency of the vehicle C1. it can. In addition, driving assistance information indicating that the fuel consumption is high (good), that is, driving assistance information indicating that the travel distance per unit fuel is long is displayed by the driver trying to save fuel. As a result, the driver visually recognizes the driving support information indicating that the fuel consumption is high (good) when fuel saving driving is intended. Therefore, the driver is prevented from feeling uncomfortable with the driving support information, and the reliability with respect to the driving support information is improved.

  Eco driving (fuel-saving driving) requires the driver's concentration. Therefore, it was difficult to always continue while driving. On the other hand, in the present embodiment, the driving support information is displayed only when the vehicle is traveling on a road section with a margin for improving fuel efficiency. Therefore, the driver of the vehicle C1 can know the timing when paying attention to the eco-driving (fuel-saving driving). Therefore, the driver can perform eco-driving (fuel-saving driving) more appropriately.

  On the other hand, among the records (fuel consumption information) stored in the fuel consumption information database 8 (see FIG. 2), the driver of the vehicle C1 has a high driving skill for eco driving (fuel saving driving) and includes the current road link ID. It is assumed that the average fuel consumption of the record is better than the threshold fuel consumption (step S205 in FIG. 8, Yes). Then, the navigation device 1 (eco-driving support information generation unit 9b) of the vehicle C1 outputs an eco-driving support information display prohibition command to the route guidance information generation unit 9c (step S207 in FIG. 8). When the navigation device 1 of the vehicle C1 outputs the eco driving support information display prohibition command, the route guidance information generation unit 9c outputs the guidance information display command to the display unit 10. When the route guidance information generation unit 9c outputs a guidance information display command, the display unit 10 displays the guidance information on the entire display screen and prohibits the display of driving support information.

  Thus, in this embodiment, when the average fuel efficiency value of the vehicle C1 is higher than the threshold fuel efficiency, the display of the driving support information on the display screen of the display unit 10 of the vehicle C1 is prohibited (FIG. 8). Steps S205 to S207). Therefore, when the fuel efficiency of the vehicle C1 is good, the driver of the vehicle C1 can execute the driving, and it is not necessary to alert the driver of the vehicle C1 to execute the eco driving, the driving support information is displayed on the screen. No need to display on Thereby, the sense of incongruity with respect to the driving support information can be further suppressed, and the reliability can be further improved. Moreover, the fall of the visibility of the guidance information which guides the vehicle C1 to a guidance route can be suppressed. That is, it is possible to reduce cases where it is difficult to see the original functions (route guidance, map display) of the navigation device 1. Further, the driver of the vehicle C1 can know the timing when paying attention to the eco-driving.

  On the other hand, it is assumed that the road section in which the vehicle C1 is currently traveling is a road section where the vehicle speed is low and fuel consumption variation among the vehicles C is small. Then, in the received eco-driving support display determination information (see FIG. 6), it is assumed that the eco-driving support flag of the eco-driving support display determination information including the current road link ID is in an OFF state (step S204 in FIG. 8). , No). That is, it is assumed that, among the fuel efficiency information (average fuel efficiency) stored in the fuel efficiency management database 12, the average fuel efficiency variation μ + σ in the road section where the vehicle C1 is currently traveling is equal to or less than the set threshold μ × α. Then, the navigation device 1 (eco-driving support information generation unit 9b) of the vehicle C1 outputs an eco-driving support information display prohibition command to the route guidance information generation unit 9c (step S207 in FIG. 8). When the navigation device 1 of the vehicle C1 outputs the eco driving support information display prohibition command, the route guidance information generation unit 9c outputs the guidance information display command to the display unit 10. When the route guidance information generation unit 9c outputs a guidance information display command, the display unit 10 displays the guidance information on the entire display screen and prohibits the display of driving support information.

  As described above, in the present embodiment, when the fuel consumption variation μ + σ is equal to or smaller than the set threshold μ × α, the eco-driving support flag is turned off, and the display of the driving support information on the display screen of the display unit 10 is prohibited. The configuration is adopted (steps S305 and S307 in FIG. 9). Therefore, in a road section in which the variation μ + σ is equal to or less than the set threshold μ × α and there is no room for improvement in fuel consumption, driving efficiency information is not displayed, so even if the driver tries to save fuel, the fuel efficiency is low ( It is possible to suppress the display of driving support information indicating that the travel distance per unit fuel is short, that is, driving support information indicating that the driving distance per unit fuel is short. Therefore, the driver is prevented from feeling uncomfortable with the driving support information, and the reliability with respect to the driving support information is improved. Further, by not displaying the driving support information on the display screen, it is possible to suppress a reduction in the visibility of the guidance information.

  In the present embodiment, the navigation device 1 of FIG. 1 constitutes a vehicle information providing device. Similarly, the GPS receiver 6 in FIG. 1 constitutes a vehicle position detector. Further, the eco-driving support information generating unit 9b in FIG. 1 and step S204 in FIG. 8 constitute a road section specifying unit. Further, the fuel consumption management database 12 in FIG. 1 constitutes an energy consumption rate information storage unit. Further, the eco-driving support information generation unit 9b, the route guidance information generation unit 9c, the display unit 10, the fuel consumption variation management unit 14, steps S204, S206, and S207 in FIG. 1 and the steps S305 to S307 in FIG. Configure. Moreover, the fuel consumption calculation part 9a of FIG. 1 and step S103 of FIG. 7 comprise an average value calculation part. Further, the fuel consumption information database 8 of FIG. 1 constitutes an average value storage unit. Further, the eco-driving support information generating unit 9b and steps S205 to S207 in FIG. 1 constitute a driving support information display prohibiting unit. Further, the threshold fuel consumption constitutes the set consumption rate. Furthermore, the vehicle information providing system S constitutes a vehicle information providing system. Moreover, the information provision determination apparatus 2 of FIG. 1 comprises an information provision determination apparatus. Further, the telematics communication unit 11 of FIG. 1 constitutes an information providing device side receiving unit and an information providing device side transmitting unit. Further, the fuel consumption variation management unit 14 of FIG. 1 constitutes an information providing device side receiving unit and an information providing device side transmitting unit. Further, the fuel consumption variation management unit 14 in FIG. 1 and step S208 in FIG. 9 constitute a set consumption rate setting unit.

(Effect of this embodiment)
This embodiment has the following effects.
(1) The navigation device 1 displays driving assistance information, which is information related to fuel-saving driving, when the fuel consumption variation μ + σ in the road section on which the host vehicle C is traveling is larger than the set threshold μ × α (step of FIG. 8). S204, S206).
According to such a configuration, the driving support information is displayed by displaying the driving support information in the road section where the variation μ + σ of the energy consumption rate is larger than the set threshold μ × α, that is, the margin for improving the energy consumption rate is large. It is possible to suppress a sense of discomfort with respect to and to improve reliability. In other words, in the road section where the energy consumption rate μ + σ is equal to or less than the set threshold μ × α, that is, the road area where the margin for improving the energy consumption rate is small, the driving assistance information is not displayed on the display screen, thereby making the driving assistance information uncomfortable. It can be suppressed and reliability can be improved.

(2) The navigation device 1 prohibits the display of driving support information when the average fuel consumption value of the host vehicle C in the road section where the host vehicle C is traveling is higher than the threshold fuel consumption (step S205 in FIG. 8). S207).
According to such a configuration, for example, when the fuel consumption of the vehicle C is better than the threshold fuel consumption and it is not necessary to alert the driver of the vehicle C, the driving support information is not displayed on the display screen. Thereby, the sense of incongruity with respect to the driving support information can be further suppressed, and the reliability can be further improved.

(3) When the navigation apparatus 1 has a fuel efficiency variation μ + σ in a road section on which the vehicle C travels larger than a set threshold μ × α, driving assistance is performed during or before the vehicle C enters the road section. Information is displayed on a part of the display screen (step S206 in FIG. 8).
According to such a configuration, it is possible to alert the driver of the vehicle C that it is necessary to drive (fuel-saving driving) before the vehicle C travels on a road section where there is a margin for improving fuel efficiency.

(4) Based on the fuel consumption information (average value of fuel consumption) transmitted by the navigation device 1, the information provision determination device 2 determines whether the multiple vehicle average fuel consumption μ or the multiple vehicle average fuel consumption μ and the standard deviation σ for each road section. The added value μ + σ is calculated as the threshold fuel consumption (step S308 in FIG. 9).
According to such a configuration, a more appropriate threshold fuel consumption can be set according to road conditions. Thereby, driving assistance information can be provided at a more appropriate timing.

(Modification 1)
FIG. 11 is a diagram showing a schematic configuration of the vehicle information providing system S. As shown in FIG.
In this embodiment, although the fuel consumption calculating part 9a showed the example which calculates the average fuel consumption of the vehicle C for every road section irrespective of a driver | operator, the other structure can also be employ | adopted. For example, the fuel consumption calculation unit 9a may calculate the average fuel consumption of the vehicle C for each road section for each driver.

  Specifically, as shown in FIG. 11, the navigation device 1 includes a driver specifying unit 15 that specifies the driver of the host vehicle C. As the driver identification unit 15, for example, a device that captures a driver's face image and identifies the driver based on the photographing result can be employed. Further, the fuel consumption calculation unit 9a specifies the road section where the host vehicle C travels and the driver specifying unit 15 based on the fuel injection amount detected by the fuel injection amount detection unit 5 and the vehicle speed detected by the vehicle speed detection unit 4. For each driver, the average value of the fuel consumption of the host vehicle C is calculated for each road section. Subsequently, the fuel consumption calculation unit 9a stores the calculated average value of the fuel consumption of the host vehicle C in the fuel consumption information database 8 (see FIG. 2). Subsequently, the fuel efficiency calculation unit 9a uses the driver specified by the driver specifying unit 15 in the road section where the host vehicle C travels out of the average value of the fuel consumption of the host vehicle C stored in the fuel efficiency information database 8. When the average value of the fuel consumption of the host vehicle C is higher than the threshold fuel consumption, the display of driving support information in the host vehicle C is prohibited.

As a result, for example, when a plurality of drivers use one vehicle C, a driver with high (good) driving performance with high driving skill of eco-driving (fuel-saving driving) and high fuel efficiency of vehicle C is driving. If so, the driving support information is not displayed on the display screen. Further, for example, when a driver with low driving skill in eco-driving (fuel-saving driving) and a vehicle with low fuel consumption is driving, driving support information is displayed on the display screen. Thereby, according to the driving skill of the driver's eco-driving (fuel-saving driving), driving support information can be provided at a more appropriate timing.
In this modification, the driver specifying unit 15 in FIG. 11 constitutes the driver specifying unit.

(Effect of Modification 1)
This modification has the following effects in addition to the effects (1) to (4) of the first embodiment.
(1) The navigation device 1 calculates the average fuel consumption of the host vehicle C for each road section for each driver specified by the driver specifying unit 15. Subsequently, when the navigation apparatus 1 has an average fuel consumption value of the host vehicle C by the driver specified by the driver specifying unit 15 in a road section where the host vehicle C is traveling higher than a threshold fuel consumption, the host vehicle C Display of driving support information on the display screen is prohibited.
According to such a configuration, for example, the driving support information can be provided at a more appropriate timing according to the driving skill of the driver's eco-driving (fuel-saving driving).

(Modification 2)
FIG. 12 is a diagram showing a schematic configuration of the vehicle information providing system S. As shown in FIG.
In this embodiment, the telematics center B communicable with the host vehicle C has the fuel consumption variation management database 13, and the fuel consumption variation management database 13 stores a plurality of fuel consumptions calculated by the telematics center B for each road section. However, other configurations can be employed. For example, as shown in FIG. 12, the vehicle-side storage unit 16 may be mounted on the navigation device 1 of the host vehicle C, and a plurality of fuel consumptions may be stored in advance in the vehicle-side storage unit 16 for each road segment. In this case, instead of the fuel consumption variation management database 13 and the fuel consumption variation management unit 14, the fuel consumption calculation unit 9a and the vehicle side storage unit 16 are used. Thereby, in this modification, the information provision system S for vehicles is realizable with the navigation apparatus 1 single-piece | unit.

For example, as shown in FIG. 12, the vehicle-side storage unit 16 is mounted on the navigation device 1 of the host vehicle C, and a plurality of past fuel consumptions of the host vehicle C are stored in the vehicle-side storage unit 16 for each road segment. It is good. In this case, instead of the fuel consumption variation management database 13 and the fuel consumption variation management unit 14, the fuel consumption calculation unit 9a and the vehicle side storage unit 16 are used. Thereby, in this modification, the information provision system S for vehicles is realizable with the navigation apparatus 1 single-piece | unit.
In this embodiment, the fuel consumption variation management unit 14 in FIG. 1 constitutes a center-side storage unit. Similarly, the vehicle-side storage unit 16 in FIG. 12 constitutes a vehicle-side storage unit.

(Effect of Modification 2)
This modification has the following effects in addition to the effects (1) to (4) of the first embodiment.
(1) A vehicle-side storage unit 16 that is mounted on the vehicle C and stores a plurality of fuel consumption in advance for each road section, and a vehicle side that is mounted on the vehicle C and stores a plurality of past fuel consumptions of the vehicle C for each road section. The storage unit 16 or a telematics center that can communicate with the vehicle C has a fuel consumption variation management database 13 that stores a plurality of fuel consumptions calculated by the telematics center for each road section.

According to such a configuration, the vehicle information providing system can be realized in various modes such as a combination of the navigation device 1 and the information provision determination device 2 and the navigation device 1 alone.
As described above, the entire contents of the Japanese Patent Application 2012-91124 (filed on April 12, 2012) to which the present application claims priority form part of the present disclosure by reference.
Although the present invention has been described with reference to a limited number of embodiments, the scope of rights is not limited thereto, and modifications of each embodiment based on the above disclosure are obvious to those skilled in the art.

2 Information provision judgment device (Information provision judgment device)
6 GPS receiver (vehicle position detector)
8 Fuel consumption information database (average value storage)
9a Fuel consumption calculator (average value calculator)
9b Eco driving support information generation unit (road section identification unit, driving support information display unit, driving support information display prohibition unit)
9c Route guidance information generation part (driving support information display part)
10 Display (Drive support information display)
11 Telematics communication unit (information providing device side receiving unit, information providing device side transmitting unit)
12 Fuel consumption management database (energy consumption rate information storage unit)
13 Fuel efficiency variation management database (center side storage unit)
14 Fuel consumption variation management unit (driving support information display unit, setting threshold setting unit, information providing device side receiving unit, information providing device side transmitting unit)
15 Driver identification part 15 (driver identification part)
16 Vehicle-side storage unit (vehicle-side storage unit)
S Information provision system for vehicles (Information provision system for vehicles)
Step S103 (average value calculation unit)
Step S204 (road section specifying part, driving support information display part)
Step S205 (driving support information display prohibition section)
Step S208 (set threshold setting unit)
Step S206, S207 (driving support information display part, driving support information display prohibition part)
Steps S305 to S307 (driving support information display unit)

Claims (6)

A vehicle position detector for detecting the current position of the host vehicle;
Based on the current position detected by the vehicle position detection unit, a road segment specifying unit that specifies a road segment on which the vehicle travels,
An energy consumption rate information storage unit that stores a plurality of energy consumption rates that represent travel distance per unit energy for each road section;
Driving support that is information related to energy-saving driving when the energy consumption rate stored in the energy consumption rate information storage unit has a variation in energy consumption rate in the road segment specified by the road segment specifying unit that is greater than a set threshold value. A vehicle information providing apparatus comprising: a driving support information display unit that displays information. Based on the road section specified by the road section specifying section, an average value calculating section that calculates an average value of the energy consumption rate of the own vehicle for each road section;
An average value storage unit that stores an average value of the energy consumption rate of the host vehicle calculated by the average value calculation unit;
When the average value of the energy consumption rate of the own vehicle in the road section specified by the road section specifying unit is higher than the set consumption rate among the average value of the energy consumption rate of the own vehicle stored in the average value storage unit The vehicle information providing apparatus according to claim 1, further comprising: a driving support information display prohibiting unit that prohibits display of the driving support information. It has a driver identification unit that identifies the driver of the vehicle,
The average value calculating unit calculates an average value of the energy consumption rate of the own vehicle for each road section for each driver specified by the driver specifying unit,
The average value storage unit stores the average value of the energy consumption rate of the vehicle for each driver calculated by the average value calculation unit,
The driving support information display prohibition unit is specified by the driver specifying unit in the road section specified by the road section specifying unit among the average value of the energy consumption rate of the host vehicle stored in the average value storage unit. 3. The vehicle information providing apparatus according to claim 2, wherein display of the driving support information is prohibited when an average value of an energy consumption rate of the host vehicle by the driver who has performed is higher than the set consumption rate.   The energy consumption rate information storage unit is a vehicle-side storage unit that is installed in the host vehicle and stores a plurality of energy consumption rates in advance for each road section, and a past energy consumption rate of the host vehicle that is installed in the host vehicle and for each road section. A plurality of vehicle-side storage units, or a center-side storage unit that has an information provision determination device communicable with the host vehicle and stores a plurality of energy consumption rates calculated by the information provision determination device for each road section The vehicle information providing device according to any one of claims 1 to 3, wherein the vehicle information providing device is any one of the above.   The driving support information display unit is configured such that, when the energy consumption rate stored in the energy consumption rate information storage unit is larger than the set threshold value in the energy consumption rate in the road segment specified by the road segment specifying unit. 5. The driving support information is displayed when the vehicle enters or before the vehicle enters the road section specified by the road section specifying unit. 6. Vehicle information providing device. The vehicle information providing device according to claim 2 or 3, and an information provision determination device capable of communicating with the vehicle information providing device,
The vehicle information providing device includes:
An information providing device-side receiving unit that receives the information of the set consumption rate from the information providing determination device;
An information providing device side transmitting unit that transmits an average value of the energy consumption rate of the host vehicle calculated by the average value calculating unit to the information providing determination device;
The information provision determination device includes:
An information providing determination device side receiving unit that receives an average value of energy consumption rates transmitted by the information providing device side transmitting unit;
Based on the average value of the energy consumption rate received by the information providing determination device side receiving unit, for each road section, calculate the average value of the energy consumption rate of a plurality of vehicles or an addition value of the average value and the standard deviation A set consumption rate setting unit as the set consumption rate;
An information provision system for a vehicle, comprising: an information provision determination device side transmission unit configured to transmit the set consumption rate set by the set consumption rate setting unit to the vehicle information provision device.

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