WO2013153733A1 - Vehicular information supply device and vehicular information supply system - Google Patents

Vehicular information supply device and vehicular information supply system Download PDF

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Publication number
WO2013153733A1
WO2013153733A1 PCT/JP2013/001330 JP2013001330W WO2013153733A1 WO 2013153733 A1 WO2013153733 A1 WO 2013153733A1 JP 2013001330 W JP2013001330 W JP 2013001330W WO 2013153733 A1 WO2013153733 A1 WO 2013153733A1
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WO
WIPO (PCT)
Prior art keywords
information
vehicle
unit
driving support
fuel consumption
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PCT/JP2013/001330
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French (fr)
Japanese (ja)
Inventor
美香 吉田
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日産自動車株式会社
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Publication date
Application filed by 日産自動車株式会社 filed Critical 日産自動車株式会社
Priority to JP2014510030A priority Critical patent/JP5822020B2/en
Publication of WO2013153733A1 publication Critical patent/WO2013153733A1/en

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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01CMEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C21/00Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00
    • G01C21/26Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 specially adapted for navigation in a road network
    • G01C21/34Route searching; Route guidance
    • G01C21/36Input/output arrangements for on-board computers
    • G01C21/3697Output of additional, non-guidance related information, e.g. low fuel level
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01CMEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C21/00Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00
    • G01C21/26Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 specially adapted for navigation in a road network
    • G01C21/34Route searching; Route guidance
    • G01C21/3453Special cost functions, i.e. other than distance or default speed limit of road segments
    • G01C21/3469Fuel consumption; Energy use; Emission aspects

Definitions

  • 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.
  • 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.
  • 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.
  • 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 trust with respect to the driving support information can be improved.
  • 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.
  • FIG. 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.
  • 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.
  • 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.
  • the vehicle C is a vehicle that uses an internal combustion engine (engine) as a power source.
  • the energy consumption rate is defined as a fuel consumption rate (hereinafter also referred to as fuel efficiency) that represents the travel distance of the vehicle C per unit capacity of fuel of the internal combustion engine.
  • a vehicle using an internal combustion engine as a power source is employed as the vehicle C
  • other configurations may be employed.
  • 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.
  • FIG. 1 is a diagram showing a schematic configuration of a vehicle information providing system S.
  • 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.
  • 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.
  • 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.
  • road sections 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.
  • 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.
  • 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.
  • 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.
  • the fuel consumption calculating part 9a memorize
  • 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.
  • 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.
  • the guidance information information that displays the searched guidance route and the current position of the host vehicle C is employed.
  • 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.
  • a control command hereinafter also referred to as a support information display command
  • 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).
  • a route guidance information for guiding the searched vehicle C to the destination on the display screen of the display unit 10
  • 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.
  • 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.
  • 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. .
  • 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.
  • 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.
  • 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.
  • 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
  • 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.
  • 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.
  • 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.
  • 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.
  • the fuel consumption variation management database 13 calculates the average fuel consumption average (hereinafter also referred to as “multiple vehicle average fuel consumption”) ⁇ 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 ⁇ is calculated, vehicle type identification information that represents the vehicle type of the vehicle C for which multiple vehicle average fuel efficiency ⁇ has been calculated, a time zone in which the multiple vehicle average fuel consumption ⁇ has been 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.
  • the eco-driving support flag 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).
  • the eco-driving support flag 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.
  • the fuel consumption variation management unit 14 turns on the eco-driving support flag only in a road section where the fuel consumption variation among the vehicles C is large.
  • 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.
  • FIG. 6 is an explanatory diagram for explaining the eco-driving support display determination information.
  • 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.
  • FIG. 7 is a flowchart showing fuel consumption information accumulation processing.
  • 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.
  • step S102 the fuel consumption calculation unit 9a determines whether or not a road link ID (hereinafter also referred to as a current road link ID) representing a 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). .
  • a road link ID hereinafter also referred to as a current road link ID
  • 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.
  • the fuel efficiency calculation unit 9a determines that the road link ID has not changed, and the step S101 is performed.
  • step S101-> S102 the fuel consumption calculation part 9a repeatedly performs the flow of said step S101-> S102. And the fuel consumption calculating part 9a accumulate
  • 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.
  • step S104 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).
  • step S105 the fuel consumption calculation unit 9a determines whether or not the driver has finished the driving support function of the navigation device 1. 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • step S202 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. ).
  • 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.
  • step S203 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).
  • the process proceeds to step S204, and the eco-driving support information generation unit 9b determines whether or not 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.
  • step S205 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.
  • 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).
  • 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.
  • the eco-driving support information generation unit 9b determines whether the average fuel efficiency is greater than the threshold fuel efficiency.
  • the eco-driving support information generation unit 9b determines that the average fuel efficiency is greater than the threshold fuel efficiency (Yes) If 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. .
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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).
  • FIG. 9 is a flowchart showing fuel consumption variation data generation processing.
  • 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.
  • 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.
  • step S302 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.
  • step S303 the process proceeds to step S303, and the fuel consumption variation management unit 14 adds 1 to the stored variable i.
  • step S304 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) ⁇ and standard deviation ⁇ 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) ⁇ and standard deviation ⁇ of the average fuel consumption included in the selected record group.
  • step S305 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 ⁇ + ⁇ of the average vehicle multiple fuel consumption ⁇ calculated in step S304 and the standard deviation ⁇ is employed.
  • a multiplication value ⁇ ⁇ ⁇ of the average vehicle fuel efficiency ⁇ calculated in step S304 and a preset setting value ⁇ (> 1) is adopted.
  • the driving support function is provided 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. Determine whether it is necessary.
  • the fuel consumption variation management unit 14 determines that the fuel consumption variation ⁇ + ⁇ of the plurality of vehicles C is larger than the set threshold ⁇ ⁇ ⁇ (Yes), it determines that the driving support function needs to be provided, The process proceeds to step S306.
  • 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.
  • 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.
  • 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.
  • 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.
  • the threshold fuel consumption the multiple vehicle average fuel consumption ⁇ calculated in step S304, or the addition value ( ⁇ ⁇ ⁇ + ⁇ ) of the multiple vehicle average fuel consumption ⁇ multiplied by the standard deviation ⁇ and a preset set value ⁇ is adopted. .
  • step S309 the fuel consumption variation management unit 14 sets the road link ID, vehicle type identification information, time zone, and day of week of the record (see FIG. 5) created in step S306 or S307.
  • 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 ⁇ of the plurality of vehicles in the step S304. adopt.
  • the fuel consumption variation management unit 14 stores the set record in the fuel consumption variation management database 13.
  • step S310 the fuel consumption variation management unit 14 determines whether the variable i is equal to or greater than the total number m of the record group.
  • 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.
  • 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.
  • 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.
  • step S402 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).
  • step S403 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.
  • 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.
  • 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.
  • 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).
  • 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 ⁇ and the standard deviation ⁇ are calculated.
  • the average vehicle fuel efficiency ⁇ and the standard deviation ⁇ 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).
  • 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 ⁇ (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).
  • 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 ⁇ (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.
  • 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).
  • 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.
  • Step S403 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).
  • the road section in which the vehicle C1 is currently traveling is a road section where the vehicle speed is high and the fuel consumption variation among the vehicles C is large.
  • 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 ⁇ + ⁇ in the road section where the vehicle C1 is currently traveling is greater than the set threshold ⁇ ⁇ ⁇ .
  • the average of the records including the current road link ID among the records stored in the fuel efficiency information database 8 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).
  • the route guidance information generation unit 9c When the navigation device 1 outputs the eco-drive support information display permission command, the route guidance information generation unit 9c outputs the 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)).
  • 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 ⁇ + ⁇ is larger than the set threshold ⁇ ⁇ ⁇ 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.
  • 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.
  • 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
  • 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.
  • 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.
  • 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.
  • the road section in which the vehicle C1 is currently traveling is a road section with a low vehicle speed and a small variation in fuel consumption among the vehicles C.
  • 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 ⁇ + ⁇ in the road section where the vehicle C1 is currently traveling is equal to or less than the set threshold ⁇ ⁇ ⁇ .
  • 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).
  • the route guidance information generation unit 9c outputs the guidance information display command to the display unit 10.
  • the display unit 10 displays the guidance information on the entire display screen and prohibits the display of driving support information.
  • 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).
  • driving efficiency information is not displayed, so even if the driver tries to save fuel, the fuel efficiency is low ( It can be suppressed that the driving support information indicating that the driving distance per unit fuel is short, that is, the driving support information indicating that the driving distance per unit fuel is short is displayed. 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.
  • the navigation device 1 in FIG. 1 constitutes a vehicle information providing device.
  • the GPS receiver 6 in FIG. 1 constitutes a vehicle position detector.
  • the eco-driving support information generating unit 9b in FIG. 1 and step S204 in FIG. 8 constitute a road section specifying unit.
  • the fuel consumption management database 12 in FIG. 1 constitutes an energy consumption rate information storage unit.
  • the fuel consumption calculation part 9a of FIG. 1 and step S103 of FIG. 7 comprise an average value calculation part.
  • the fuel consumption information database 8 of FIG. 1 constitutes an average value storage unit.
  • the eco-driving support information generating unit 9b and steps S205 to S207 in FIG. 1 constitute a driving support information display prohibiting unit.
  • the threshold fuel consumption constitutes the set consumption rate.
  • the vehicle information providing system S constitutes a vehicle information providing system.
  • the information provision determination apparatus 2 of FIG. 1 comprises an information provision determination apparatus.
  • the telematics communication unit 11 of FIG. 1 constitutes an information providing device side receiving unit and an information providing device side transmitting unit.
  • 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.
  • the fuel consumption variation management unit 14 in FIG. 1 and step S208 in FIG. 9 constitute a set consumption rate setting unit.
  • the navigation device 1 displays driving assistance information, which is information related to fuel-saving driving, when the fuel consumption variation ⁇ + ⁇ in the road section on which the host vehicle C is traveling is larger than the set threshold ⁇ ⁇ ⁇ (step of FIG. 8). S204, S206).
  • the driving support information is displayed by displaying the driving support information in the road section where the variation ⁇ + ⁇ of the energy consumption rate is larger than the set threshold ⁇ ⁇ ⁇ , 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.
  • 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.
  • 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).
  • the driving support information is not displayed on the display screen.
  • the information provision determination device 2 determines whether the multiple vehicle average fuel consumption ⁇ or the multiple vehicle average fuel consumption ⁇ and the standard deviation ⁇ for each road section.
  • the added value ⁇ + ⁇ 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.
  • FIG. 11 is a diagram showing a schematic configuration of the vehicle information providing system S.
  • 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
  • the fuel consumption calculation unit 9a may calculate the average fuel consumption of the vehicle C for each road section for each driver.
  • the navigation device 1 includes a driver specifying unit 15 that specifies the driver of the host vehicle C.
  • 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.
  • 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).
  • 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.
  • the display of driving support information in the host vehicle C is prohibited.
  • the driver specifying unit 15 in FIG. 11 constitutes the driver specifying unit.
  • 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).
  • FIG. 12 is a diagram showing a schematic configuration of the vehicle information providing system S.
  • 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.
  • 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.
  • the fuel consumption calculation unit 9a and the vehicle side storage unit 16 are used 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.
  • the information provision system S for vehicles is realizable with the navigation apparatus 1 single-piece
  • 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.
  • the fuel consumption variation management database 13 and the fuel consumption variation management unit 14 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.
  • the information provision system S for vehicles is realizable with the navigation apparatus 1 single-piece
  • the fuel consumption variation management unit 14 in FIG. 1 constitutes a center-side storage unit.
  • the vehicle-side storage unit 16 in FIG. 12 constitutes a vehicle-side storage unit.
  • 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.
  • 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.
  • the entire contents of the Japanese Patent Application 2012-91124 (filed on April 12, 2012) to which the present application claims priority constitute a part of the present disclosure by reference.
  • 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.
  • 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)

Abstract

In the present invention, when fuel efficiency unevenness (μ+σ) in a road interval over which the relevant vehicle (C) is traveling is greater than a set threshold (μ×α), a navigation device (1) displays driving assistance information that is information pertaining to fuel conserving driving (steps S204 and S206 in fig. 8). By means of such a configuration, it is possible to suppress discomfort with respect to driving assistance information and increase confidence by displaying driving assistance information in road intervals at which the energy efficiency rate unevenness (μ+σ) is greater than the set threshold (μ×α), or in other words, road intervals at which the leeway for an increase in energy efficiency rate is greater.

Description

車両用情報提供装置、および車両用情報提供システムVEHICLE INFORMATION PROVIDING DEVICE AND VEHICLE INFORMATION PROVIDING SYSTEM
 本発明は、省エネルギー運転に関する情報を運転者に提供して、運転者に省エネルギー運転を促す車両用情報提供装置、および車両用情報提供システムに関する。 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.
 従来、この種の技術としては、例えば特許文献1に記載の車両用情報提供装置がある。
 この車両用情報提供装置では、省エネルギー運転に関する情報(以下、運転支援情報とも呼ぶ)をナビゲーション装置の表示画面に表示する運転支援機能を備えることで、運転支援情報を運転者に提供するようになっている。
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.
特開2011-180781号公報JP 2011-180781 A
 しかしながら、上記従来の車両用情報提供装置では、運転支援情報を常に表示するようになっている。そのため、例えば、勾配のきつい登り坂が長く継続するような道路を走行している場合、運転者が省エネルギー運転を心がけても、エネルギー消費率が低いという運転支援情報、つまり、単位エネルギー当たりの走行距離が短いことを示す運転支援情報が表示される。これにより、運転者は、省エネルギー運転を心がけているにも関わらず、エネルギー消費率が低い状況での運転支援情報を視認するため、運転支援情報に対して違和感を感じてしまい、表示される運転支援情報への信頼感が低下する可能性があった。
 本発明は、上記のような点に着目し、運転支援情報に対する違和感を抑制することで、運転支援情報に対する信頼感を向上することを目的とする。
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.
 上記課題を解決するため、本発明の一態様では、自車両が現在走行している道路区間におけるエネルギー消費率のばらつきが設定閾値より大きい場合に、省エネルギー運転に関する情報である運転支援情報を表示する。 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. .
 本発明の一態様では、エネルギー消費率のばらつきが設定閾値より大きい、すなわち、本発明の一態様では、エネルギー消費率向上の余裕しろが大きい道路区間では、運転支援情報を表示することで、運転支援情報に対する違和感を抑制し、運転支援情報に対する信頼感を向上することができる。換言すれば、本発明の一態様では、エネルギー消費率のばらつきが設定閾値以下、すなわち、本発明の一態様では、エネルギー消費率向上の余裕しろが小さい道路区間では、運転支援情報を表示しないことで、運転支援情報に対する違和感を抑制し、運転支援情報に対する信頼感を向上することができる。 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 trust with respect to 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 of the driving support information.
車両用情報提供システムSの概略構成を示す図である。It is a figure which shows schematic structure of the information provision system S for vehicles. 燃費情報データベース8を説明するための図である。It is a figure for demonstrating the fuel consumption information database. 表示部10の表示画面を説明するための図である。4 is a diagram for explaining a display screen of the display unit 10. FIG. 燃費管理データベース12を説明するための図である。It is a figure for demonstrating the fuel consumption management database. 燃費ばらつき管理データベース13を説明するための図である。It is a figure for demonstrating the fuel consumption variation management database. エコ運転支援表示判断情報を説明するための説明図である。It is explanatory drawing for demonstrating eco-drive assistance display judgment information. 燃費情報蓄積処理を表すフローチャートである。It is a flowchart showing a fuel consumption information accumulation process. エコ運転支援機能提供処理を表すフローチャートである。It is a flowchart showing an eco-driving support function provision process. 燃費ばらつきデータ生成処理を表すフローチャートである。It is a flowchart showing a fuel consumption variation data generation process. エコ運転支援表示判断情報生成処理を表すフローチャートである。It is a flowchart showing an eco-drive assistance display determination information generation process. 車両用情報提供システムSの概略構成を示す図である。It is a figure which shows schematic structure of the information provision system S for vehicles. 車両用情報提供システムSの概略構成を示す図である。It is a figure which shows schematic structure of the information provision system S for vehicles.
 次に、本発明に係る実施形態について図面を参照して説明する。
 本実施形態は、本発明を、省エネルギー運転(以下、エコ運転とも呼ぶ)に関する情報(運転支援情報)を車両Cの運転者に提供し、運転支援情報の提供によって車両Cのエネルギー消費率を向上可能とする車両用情報提供システムSに適用したものである。運転支援情報としては、エコ運転(省エネルギー運転)の達成度を表す情報がある。この達成度を表す情報としては、例えば、緩やかな発進・加速の達成度を表す情報、加減速を抑えた巡航の達成度を表す情報および緩やかな減速の達成度を表す情報等がある。また、運転支援情報としては、上述した達成度を表す情報以外にも、一般的なアドバイス情報もある。このアドバイス情報としては、例えば、「ふんわりアクセルで加速しましょう」、「速度変化の少ない巡航をしましょう」等のメッセージがある。また、車両Cは、内燃機関(エンジン)を動力源とする車両とする。この場合、エネルギー消費率は、内燃機関の単位容量の燃料当たりの自車両Cの走行距離を表す燃料消費率(以下、燃費とも呼ぶ)とする。
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 defined as a fuel consumption rate (hereinafter also referred to as fuel efficiency) that represents the travel distance of the vehicle C per unit capacity of fuel of the internal combustion engine.
 なお、本実施形態では、車両Cとして、内燃機関を動力源とする車両を採用する例を示したが、他の構成を採用することもできる。例えば、電動機(モータ)を動力源とする車両を採用する構成としてもよい。この場合、エネルギー消費率としては、電動機の単位容量の電力当たりの自車両Cの走行距離を表す電力消費率を採用する。 In the present embodiment, an example in which a vehicle using an internal combustion engine as a power source is employed as the vehicle C is shown, 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.
(構成)
 図1は、車両用情報提供システムSの概略構成を示す図である。
 図1に示すように、車両用情報提供システムSは、複数台の車両Cが搭載するナビゲーション装置1、およびテレマティクスセンタBが有する情報提供判定装置2を備える。ナビゲーション装置1と情報提供判定装置2とは、通信路3を介して情報の送受信を行う。
(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.
(ナビゲーション装置1の構成)
 図1に示すように、ナビゲーション装置1は、車速検出部4、燃料噴射量検出部5、GPS(Global Positioning System)受信部6、地図情報記憶部7、燃費情報データベース8、コントローラ9、表示部10、およびテレマティクス通信部11を備える。
 車速検出部4は、自車両Cの車速を検出する。そして、車速検出部4は、検出した車速を表す情報を後述するコントローラ9に出力する。
 燃料噴射量検出部5は、自車両Cの内燃機関のシリンダ室に噴射した燃料の噴射量(以下、燃料噴射量とも呼ぶ)を検出する。そして、燃料噴射量検出部5は、検出した燃料噴射量を表す情報をコントローラ9に出力する。
(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.
 GPS受信部6は、自車両Cの現在位置を検出する。そして、GPS受信部6は、検出した現在位置を表す情報をコントローラ9に出力する。
 地図情報記憶部7は、自車両Cが走行する地域の地図情報を記憶している。地図情報としては、道路を区分して設定した複数の小区間(以下、道路区間とも呼ぶ)の位置、形状等の情報を含むものを採用する。道路区間としては、例えば、道路交通網を表現するために道路に沿って設定されるノードとリンクとのうちのリンクを採用できる。リンクとは、ノード(結接点)とノードとを連結する線分である。
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.
 図2は、燃費情報データベース8を説明するための図である。
 燃費情報データベース8は、図2に示すように、後述するようにコントローラ9が算出した自車両Cの平均燃費(燃費の平均値)を道路区間毎に記憶するための複数のレコード(以下、燃費情報とも呼ぶ)から構成される。各レコードは、平均燃費を算出した道路区間を表す道路リンクID、平均燃費を算出した日時、曜日(平日、休日のいずれであるか)および平均燃費をフィールド値とする。
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.
 コントローラ9は、A/D(Analog to Digital)変換回路、D/A(Digital to Analog)変換回路、CPU(Central Processing Unit)、ROM(Read Only Memory)、およびRAM(Random Access Memory)等から構成した集積回路を備える。ROMは、各種処理を実現する1または2以上のプログラムを記憶している。CPUは、ROMが記憶している1または2以上のプログラムに従って各処理を実行する。そして、コントローラ9は、燃費演算部9a、エコ運転支援情報生成部9bおよびルート案内情報生成部9cを備える。ここで、これら9a~9cはプログラムによって実現される。 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.
 燃費演算部9aは、車速検出部4、燃料噴射量検出部5およびGPS受信部6が出力する情報、並びに地図情報記憶部7が記憶している地図情報に基づき、自車両Cの平均燃費を道路区間毎に算出する燃費情報蓄積処理を実行する。そして、燃費演算部9aは、算出した平均燃費を、平均燃費を算出した道路区間を表す道路リンクID、平均燃費を算出した日時、および曜日とともに燃費情報データベース8に記憶させる。 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.
 エコ運転支援情報生成部9bは、GPS受信部6が出力する情報、地図情報記憶部7が記憶している地図情報、燃費情報データベース8が記憶しているレコード(燃費情報)および自車両Cの車種を表す情報(以下、車種識別情報とも呼ぶ)に基づき、情報提供判定装置2からエコ運転支援表示判断情報(後述する図6参照)を受信するエコ運転支援機能提供処理を実行する。車種識別情報としては、例えば、普通自動車、中型自動車、大型自動車等の車種を識別する情報がある。エコ運転支援表示判断情報とは、運転支援情報を表示部10に表示させるか否かを表す情報である。そして、エコ運転支援情報生成部9bは、受信したエコ運転支援表示判断情報に基づき、エコ運転支援情報表示許可指令、またはエコ運転支援情報表示禁止指令をルート案内情報生成部9cに出力する。エコ運転支援情報表示許可指令とは、運転支援情報を表示部10の表示画面の一部(例えば、右側)に表示させる制御指令である。エコ運転支援情報表示禁止指令とは、運転支援情報の表示部10の表示画面への表示を禁止させる制御指令である。 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.
 ルート案内情報生成部9cは、GPS受信部6が出力する情報、および地図情報記憶部7が記憶する地図情報に基づき、運転者が設定した目的地までの誘導経路を探索する。目的地の設定は、例えば、ナビゲーション装置1の図示しない操作部を操作することで行う。そして、ルート案内情報生成部9cは、エコ運転支援情報生成部9bがエコ運転支援情報表示禁止指令を出力している場合、自車両Cを目的地へ案内する案内情報を表示画面全体に表示させる制御指令(以下、案内情報表示指令とも呼ぶ)を表示部10に出力する。案内情報としては、探索した誘導経路と自車両Cの現在位置とを表示する情報を採用する。これにより、例えば、既に運転支援情報を表示部10の表示画面に表示中である場合には、表示中の運転支援情報を消去する。一方、ルート案内情報生成部9cは、エコ運転支援情報生成部9bがエコ運転支援情報表示許可指令を出力している場合、案内情報に加え運転支援情報も表示部10の表示画面の一部(右側)に表示させる制御指令(以下、支援情報表示指令とも呼ぶ)を表示部10に出力する。 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.
 これにより、ナビゲーション装置1は、運転者が設定した目的地までの誘導経路を探索し、探索した自車両Cを目的地へ案内する案内情報を表示部10の表示画面に表示する(以下、ルート案内とも呼ぶ)装置本来の機能に加え、運転支援機能を備える。運転支援機能とは、自車両Cの平均燃費を算出し、算出した平均燃費に基づき、省燃費に関する情報(運転支援情報)を表示部10の表示画面に表示する機能である。 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.
 また、コントローラ9は、運転者が運転支援機能を呼び出した場合に、運転支援機能実行フラグをON状態とする。運転支援機能の呼び出しは、例えば、ナビゲーション装置1の図示しない操作部を操作することで行う。運転支援機能実行フラグとは、運転者が運転支援機能を呼び出しているか否かを表すフラグである。コントローラ9は、運転者が運転支援機能を呼び出していない場合、または運転者が運転支援機能を呼び出し後終了させた場合に、運転支援機能実行フラグをOFF状態とする。 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.
 図3は、表示部10の表示画面を説明するための図である。
 表示部10は、コントローラ9が案内情報表示指令を出力すると、案内情報表示指令に従い、図3(b)に示すように、案内情報を自車両Cの車室内に配置した表示画面全体に表示する。また、表示部10は、コントローラ9が支援情報表示指令を出力すると、支援情報表示指令に従い、図3(a)に示すように、案内情報に加え運転支援情報も自車両Cの車室内に配置した表示画面の一部(右側)に表示する。
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.
 なお、本実施形態では、コントローラ9が支援情報表示指令を出力した場合に、案内情報を表示部10の表示画面の左側に寄せて表示し、運転支援情報を表示部10の表示画面の右側に表示する例を示したが、他の構成を採用することもできる。例えば、案内情報の表示を消去し、運転支援情報を表示部10の表示画面全体に表示する構成としてもよい。
 また、本実施形態では、ナビゲーション装置1の表示部10に運転支援情報を表示する例を示したが、他の構成を採用することもできる。例えば、メータディスプレイの一部や専用のディスプレイに運転支援情報を表示する構成としてもよい。
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.
 テレマティクス通信部11は、コントローラ9が生成した情報を、通信路3を介して情報提供判定装置2に送信する。また、テレマティクス通信部11は、情報提供判定装置2が送信した情報を通信路3を介して取得して、情報提供判定装置2に送信する。
 なお、本実施形態では、ナビゲーション装置1をGPS受信部6、地図情報記憶部7、燃費情報データベース8、コントローラ9、表示部10、およびテレマティクス通信部11を備えた専用の機器で実現する例を示したが、他の構成を採用することもできる。例えば、同様の機能を持たせたポータブルナビやスマートフォン等で構成してもよい。
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.
(情報提供判定装置2の構成)
 情報提供判定装置2は、燃費管理データベース12、燃費ばらつき管理データベース13、および燃費ばらつき管理部14を備える。
 図4は、燃費管理データベース12を説明するための図である。
 燃費管理データベース12は、図4に示すように、後述するように燃費ばらつき管理部14が複数台の車両Cのナビゲーション装置1から受信した燃費情報(道路リンクID、日時、曜日、平均燃費)および車種識別情報を記憶するための複数のレコードから構成される。各レコードは、受信した燃費情報が含んでいる道路リンクID、日時、曜日および平均燃費、並びに当該燃費情報とともに受信した車種識別情報(普通車、中型車、大型車)をフィールド値とする。これにより、燃費管理データベース12は、道路区間毎に燃費情報(平均燃費を含む情報)を複数記憶している。
(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.
 図5は、燃費ばらつき管理データベース13を説明するための図である。
 燃費ばらつき管理データベース13は、図5に示すように、後述するように燃費ばらつき管理部14が算出した複数台の車両Cの平均燃費の平均(以下、複数車両平均燃費とも呼ぶ)μを道路区間毎に記憶するための複数のレコードから構成される。各レコードは、複数車両平均燃費μを算出した道路区間を表す道路リンクID、複数車両平均燃費μを算出した車両Cの車種を表す車種識別情報、複数車両平均燃費μを算出した時間帯、曜日、エコ運転支援フラグ、および閾値燃費をフィールド値とする。エコ運転支援フラグとは、運転支援情報を表示部10の表示画面に表示させるか否かを表すフラグである。エコ運転支援フラグがOFF状態である場合には、運転支援情報の表示部10への表示を禁止すると判定する(図3(a)参照)。エコ運転支援フラグがON状態である場合には、運転支援情報を表示部10の表示画面の一部(右側)に表示させると判定する(図3(b)参照)。時間帯としては、例えば、10時~11時、11時~12時等、1時間刻みに設定したものを採用する。また、閾値燃費とは、車両Cの運転者が省燃費運転(エコ運転)ができているか否かを判定するための閾値である。
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 has been calculated, a time zone in which the multiple vehicle average fuel consumption μ has been 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).
 燃費ばらつき管理部14は、複数台の車両Cのナビゲーション装置1から燃費情報および車種識別情報を受信し、受信結果を燃費管理データベース12に記憶させる燃費ばらつきデータ生成処理を実行する。そして、燃費ばらつき管理部14は、燃費管理データベース12が記憶しているレコードに基づき、エコ運転支援フラグおよび閾値燃費を道路区間毎に設定する。 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.
 ここで、例えば、車両Cの車速が低い道路区間(渋滞路、細街路、急勾配等)では、一般に、車両Cの近傍に多数の他車両が存在する。それゆえ、車両Cの運転者は、車両Cの車速を自由に増減することが比較的困難となる。そのため、運転者個々の運転の違いが小さく、各車両C間における燃費の差(ばらつき)が小さくなる。その結果、運転支援情報を運転者に提供しても、車両Cの燃費を向上することが難しい。また、車両Cの車速が低い道路区間では、運転者が省燃費運転を心がけても、燃費が低い(悪い)ことを示す運転支援情報、つまり、単位燃料当たりの走行距離が短いことを示す運転支援情報が表示されることになる。これにより、運転者は、省燃費運転を心がけているにも関わらず、燃費が低い(悪い)ことを示す運転支援情報を視認することになる。そのため、運転者は、運転支援情報に違和感を感じ、運転支援情報への信頼感が低下する。 Here, for example, in a road section where the speed of the vehicle C is low (congested road, narrow street, steep slope, etc.), 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.
 一方、車両Cの車速が高い道路区間(非渋滞路、幹線道路、高速道路等)では、一般に、車両Cの近傍に存在する他車両は少数である。それゆえ、車両Cの運転者は、車両Cの車速を比較的自由に増減できる。そのため、運転者個々の運転の違いが大きく、各車両C間における燃費の差(ばらつき)が大きくなる。その結果、運転支援情報を運転者に提供することで、車両Cの燃費を向上することが期待できる。また、車両Cの車速が高い道路区間では、運転者が省燃費運転を心がけることで、燃費が高い(良い)ことを示す運転支援情報、つまり、単位燃料当たりの走行距離が長いことを示す運転支援情報が表示されることになる。これにより、運転者は、省燃費運転を心がけた場合には、燃費が高い(良い)ことを示す運転支援情報を視認することになる。そのため、運転者は、運転支援情報に違和感を感じることがなく、運転支援情報への信頼感が向上する。 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.
 したがって、燃費ばらつき管理部14は、各車両C間における燃費のばらつきが大きい道路区間でのみエコ運転支援フラグをON状態とする。一方、燃費ばらつき管理部14は、各車両C間における燃費のばらつきが小さい道路区間ではエコ運転支援フラグをOFF状態とする。エコ運転支援フラグおよび閾値燃費の設定は、時間帯、曜日、車種識別情報で区分して実行する。続いて、燃費ばらつき管理部14は、設定したエコ運転支援フラグ、閾値燃費を、複数車両平均燃費を算出した道路区間を表す道路リンクID、時間帯、曜日および車種識別情報とともに燃費ばらつき管理データベース13に記憶させる。 Therefore, the fuel consumption variation management unit 14 turns on the eco-driving support flag only in a road section where the fuel consumption variation 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.
 図6は、エコ運転支援表示判断情報を説明するための説明図である。
 また、燃費ばらつき管理部14は、ナビゲーション装置1から燃費情報および車種識別情報を受信すると、エコ運転支援表示判断情報生成処理を実行する。そして、燃費ばらつき管理部14は、受信した燃費情報と同一の道路リンクID、日時が表す時間帯、曜日、車種識別情報を含んでいるレコードを燃費ばらつき管理データベース13(図5参照)から読み出す。続いて、燃費ばらつき管理部14は、読み出したレコードから車種識別情報、日時、曜日を除いたものをエコ運転支援表示判断情報(運転支援情報を表示部10に表示させるか否かを表す情報)としてナビゲーション装置1に送信する。
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.
(演算処理)
 次に、コントローラ9の燃費演算部9aが実行する燃費情報蓄積処理について説明する。燃費情報蓄積処理は、運転者がナビゲーション装置1の運転支援機能を呼び出し、運転支援機能実行フラグがON状態となった場合に実行する。
 図7は、燃費情報蓄積処理を表すフローチャートである。
 図7に示すように、ステップS101では、燃費演算部9aは、車速検出部4が出力する車速を表す情報、および燃料噴射量検出部5が出力する燃料噴射量を表す情報を取得する。続いて、燃費演算部9aは、取得した情報をRAMに蓄積する。
(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.
 続いてステップS102に移行して、燃費演算部9aは、自車両Cが現在走行中の道路区間を表す道路リンクID(以下、現在道路リンクIDとも呼ぶ)が変化したか否かを判定する。具体的には、燃費演算部9aは、GPS受信部6が出力する情報、および地図情報記憶部7が記憶している地図情報に基づき、現在道路リンクIDを検出する。続いて、燃費演算部9aは、今回検出した道路リンクIDがこのステップS102を前回実行したときに検出した道路リンクID(以下、前回検出した道路リンクIDとも呼ぶ)と異なるか否かを判定する。そして、燃費演算部9aは、今回検出した道路リンクIDが前回検出した道路リンクIDと異なると判定した場合には(Yes)、道路リンクIDが変化したと判定し、ステップS103に移行する。一方、燃費演算部9aは、今回検出した道路リンクIDが前回検出した道路リンクIDと同じであると判定した場合には(No)、道路リンクIDが変化していないと判定し、前記ステップS101に戻る。 Subsequently, the process proceeds to step S102, and the fuel consumption calculation unit 9a determines whether or not a road link ID (hereinafter also referred to as a current road link ID) representing a 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.
 これにより、燃費演算部9aは、前記ステップS101→S102のフローを繰り返し実行する。そして、燃費演算部9aは、道路区間毎に、自車両Cの車速の時系列データ、および燃料噴射量の時系列データをRAMに蓄積する。
 前記ステップS103では、燃費演算部9aは、前記ステップS101でRAMに蓄積した情報(道路区間毎の、自車両Cの車速の時系列データ、および燃料噴射量の時系列データ)に基づき、自車両Cの平均燃費を道路区間毎に算出する。
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.
 続いてステップS104に移行して、燃費演算部9aは、自車両Cが直前に走行していた道路区間を表す道路リンクID(前回検出した道路リンクID)、現在の日時、現在の曜日、および前記ステップS103で算出した平均燃費を含むレコードを生成する。続いて、燃費演算部9aは、生成したレコード(燃費情報)を燃費情報データベース8(図2参照)に記憶させる。 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).
 続いてステップS105に移行して、燃費演算部9aは、運転者がナビゲーション装置1の運転支援機能を終了したか否かを判定する。具体的には、燃費演算部9aは、運転支援機能実行フラグがOFF状態であるか否かを判定する。そして、燃費演算部9aは、運転支援機能実行フラグがOFF状態であると判定した場合には(Yes)、運転支援機能を終了したと判定し、この演算処理を終了する。一方、燃費演算部9aは、運転支援機能実行フラグがON状態であると判定した場合には(No)、運転支援機能を終了していないと判定し、前記ステップS101に移行する。 Subsequently, the process proceeds to step S105, and the fuel consumption calculation unit 9a determines whether or not the driver has finished the driving support function of the navigation device 1. 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.
 次に、コントローラ9のエコ運転支援情報生成部9bが実行するエコ運転支援機能提供処理について説明する。エコ運転支援機能提供処理は、運転者がナビゲーション装置1の運転支援機能を呼び出し、運転支援機能実行フラグがON状態となった場合に実行する処理であり、燃費情報蓄積処理と並行して実施する処理である。 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.
 図8は、エコ運転支援機能提供処理を表すフローチャートである。
 図8に示すように、ステップS201では、エコ運転支援情報生成部9bは、運転支援機能の提供の要否の判定を行う道路区間(以下、判定道路区間とも呼ぶ)を特定する。具体的には、エコ運転支援情報生成部9bは、ルート案内中である場合には、この先自車両Cが通行予定の道路(誘導経路上に存在する全ての道路区間、または一定数(例えば、10)の道路区間)を判定道路区間とする。または、エコ運転支援情報生成部9bが、自車両C周辺道路(自車両Cから一定距離(例えば、1km)内に存在する全ての道路区間、または一定数(例えば、10)の道路区間)を判定道路区間とする。あるいは、エコ運転支援情報生成部9bが、自車両Cの進行方向に存在する道路(自車両Cの進行方向に存在する道路区間のうち、自車両Cから一定距離(1km)内に存在する全ての道路区間、または一定数(10)の道路区間)を判定道路区間とする。
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.
 続いてステップS202に移行して、エコ運転支援情報生成部9bは、前記ステップS201で特定した判定道路区間を表す道路リンクIDを含んでいるレコード(燃費情報)を燃費情報データベース8(図2参照)から読み出す。続いて、エコ運転支援情報生成部9bは、読み出した燃費情報および自車両Cの車種を表す車種識別情報(普通車、中型車、大型車)を情報提供判定装置2に送信する。
 続いてステップS203に移行して、エコ運転支援情報生成部9bは、情報提供判定装置2から、前記ステップS201で特定した判定道路区間を表す道路リンクIDを含んでいるエコ運転支援表示判断情報(図6参照)を受信する。
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).
 続いてステップS204に移行して、エコ運転支援情報生成部9bは、自車両Cが現在走行中の道路区間における、運転支援機能の提供の要否を判定する。具体的には、GPS受信部6が出力する情報、および地図情報記憶部7が記憶している地図情報に基づき、現在道路リンクIDを検出する。続いて、エコ運転支援情報生成部9bは、前記ステップS203で受信したエコ運転支援表示判断情報(図6参照)のうち、検出した現在道路リンクIDを含んでいるエコ運転支援表示判断情報のエコ運転支援フラグがON状態であるか否かを判定する。そして、エコ運転支援情報生成部9bは、エコ運転支援フラグがON状態であると判定した場合には(Yes)、自車両Cが現在走行中の道路区間では運転支援機能の提供が必要であると判定し、ステップS205に移行する。一方、エコ運転支援情報生成部9bは、エコ運転支援フラグがOFF状態であると判定した場合には(Yes)、自車両Cが現在走行中の道路区間では運転支援機能の提供が不要であると判定し、ステップS207に移行する。 Subsequently, the process proceeds to step S204, and the eco-driving support information generation unit 9b determines whether or not 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.
 前記ステップS205では、エコ運転支援情報生成部9bは、燃費情報データベース8(図2参照)が記憶しているレコード(燃費情報)のうち、前記ステップS204で検出した道路リンクIDを含んでいるレコード(燃費情報)の平均燃費の数値が閾値燃費より高いか(平均燃費が閾値燃費より良いか)否かを判定する。ここで、閾値燃費としては、前記ステップS203で受信したエコ運転支援表示判断情報(図6参照)のうち、前記ステップS204で検出した道路リンクIDを含んでいるエコ運転支援表示判断情報の閾値燃費を採用する。具体的には、エコ運転支援情報生成部9bは、平均燃費が閾値燃費より大きいか否かを判定する。そして、エコ運転支援情報生成部9bは、平均燃費が閾値燃費より大きいと判定した場合には(Yes)、平均燃費の数値が閾値燃費より高い(良い)と判定し、ステップS206に移行する。一方、エコ運転支援情報生成部9bは、平均燃費が閾値燃費未満であると判定した場合には(No)平均燃費が閾値燃費の数値より低い(悪い)と判定し、前記ステップS207に移行する。 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. .
 前記ステップS206では、エコ運転支援情報生成部9bは、運転支援情報を表示部10の表示画面の一部(右側)に表示させる(図3(b)参照)エコ運転支援情報表示許可指令をルート案内情報生成部9cに出力した後、ステップS208に移行する。
 一方、前記ステップS207では、エコ運転支援情報生成部9bは、運転支援情報の表示部10の表示画面への表示を禁止させる(図3(a)参照)エコ運転支援情報表示禁止指令をルート案内情報生成部9cに出力した後、前記ステップS208に移行する。
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.
 前記ステップS208では、エコ運転支援情報生成部9bは、現在道路リンクIDが変化したか否かを判定する。具体的には、エコ運転支援情報生成部9bは、GPS受信部6が出力する情報、および地図情報記憶部7が記憶している地図情報に基づき、現在道路リンクIDを検出する。続いて、エコ運転支援情報生成部9bは、今回検出した現在道路リンクIDがこのステップS208を前回実行したときに検出した現在道路リンクIDと異なるか否かを判定する。そして、エコ運転支援情報生成部9bは、今回検出した現在道路リンクIDが前回検出した現在道路リンクIDと異なると判定した場合には(Yes)、現在道路リンクIDが変化したと判定し、ステップS209に移行する。一方、エコ運転支援情報生成部9bは、今回検出した現在道路リンクIDが前回検出した現在道路リンクIDと同じであると判定した場合には(No)、現在道路リンクIDが変化していないと判定し、この判定を再度実行する。 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.
 前記ステップS209では、エコ運転支援情報生成部9bは、運転者がナビゲーション装置1の運転支援機能を終了したか否かを判定する。具体的には、エコ運転支援情報生成部9bは、運転支援機能実行フラグがOFF状態であるか否かを判定する。そして、エコ運転支援情報生成部9bは、運転支援機能実行フラグがOFF状態であると判定した場合には(Yes)運転支援機能を終了したと判定し、この演算処理を終了する。一方、エコ運転支援情報生成部9bは、運転支援機能実行フラグがON状態であると判定した場合には(No)運転支援機能を終了していないと判定し、前記ステップS201に戻る。 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.
 これにより、エコ運転支援情報生成部9bは、現在道路リンクIDが変化するたびに、上記フローを前記ステップS201から繰り返し実行する。それゆえ、エコ運転支援情報生成部9bは、道路区間への自車両Cの進入時に、当該道路区間における運転支援情報を表示画面の一部(右側)に表示することになる(前記ステップS206。図3(b)参照)。これにより、例えば、燃費向上の余裕しろがある道路区間を車両Cが走行する前に、運転(省燃費運転)をする必要があることを車両Cの運転者に注意喚起できる。 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.
 なお、本実施形態では、道路区間への自車両Cの進入時に、当該道路区間における運転支援情報を表示画面の一部(右側)に表示する例を示したが、他の構成を採用することもできる。例えば、道路区間への自車両Cの進入前(進入直前)に、当該道路区間における運転支援情報を表示画面の一部(右側)に表示する構成としてもよい。 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).
 次に、情報提供判定装置2の燃費ばらつき管理部14が実行する燃費ばらつきデータ生成処理について説明する。燃費ばらつきデータ生成処理は、複数台の車両Cのナビゲーション装置1のいずれかが燃費情報および車種識別情報を送信した場合に実行する。
 図9は、燃費ばらつきデータ生成処理を表すフローチャートである。
 図9に示すように、ステップS301では、燃費ばらつき管理部14は、複数台の車両Cのナビゲーション装置1のいずれかが送信した燃費情報(道路リンクID、日時、曜日および平均燃費を含む情報)および車種識別情報を受信する。続いて、燃費ばらつき管理部14は、受信した燃費情報および車種識別情報をフィールド値とするレコード(道路リンクID、車種識別情報、日時、曜日および平均燃費)を作成する。続いて、燃費ばらつき管理部14は、作成したレコードを燃費管理データベース12(図4参照)に記憶する。これにより、燃費ばらつき管理部14は、複数台の車両Cのナビゲーション装置1から受信した燃費情報および車種識別情報を燃費管理データベース12に順次記憶する。そして、燃費管理データベース12は、道路区間毎に燃費情報を複数記憶する。
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.
 続いてステップS302に移行して、燃費ばらつき管理部14は、燃費管理データベース12(図4参照)が記憶しているレコードのうち、道路リンクID、時間帯、車種識別情報、および曜日のフィールド値が互いに同一のレコード群を順次選択する。そして、燃費ばらつき管理部14は、選択したレコード群それぞれにレコード群IDを設定する。レコード群IDとしては、例えば、1~m(mはレコード群の総数)の数値を採用できる。また、燃費ばらつき管理部14は、変数iを初期化して0として記憶する。 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.
 続いてステップS303に移行して、燃費ばらつき管理部14は、記憶している変数iに1を加算する。
 続いてステップS304に移行して、燃費ばらつき管理部14は、燃費管理データベース12(図4参照)が記憶しているレコードに基づき、道路区間毎に、複数台の車両Cの平均燃費の平均(複数車両平均燃費)μと標準偏差σとを算出する。具体的には、燃費ばらつき管理部14は、燃費管理データベース12が記憶しているレコードのうち、記憶している変数iの数値と同一のレコード群IDが設定されているレコード群を選択する。続いて、燃費ばらつき管理部14は、選択したレコード群が含む平均燃費の平均値(複数車両平均燃費)μおよび標準偏差σを算出する。
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.
 続いてステップS305に移行して、燃費ばらつき管理部14は、道路区間(道路リンクID)、時間帯、車種(車種識別情報)、および曜日の組合せ毎に、運転支援機能の提供の要否を判定する。具体的には、燃費ばらつき管理部14は、燃費管理データベース12(図4参照)が記憶しているレコードのうち、変数iの数値と同一のレコード群IDが設定されているレコード群が含んでいる、複数台の車両Cの燃費のばらつきが設定閾値より大きいか否かを判定する。燃費のばらつきとしては、前記ステップS304で算出した複数車両平均燃費μと標準偏差σとの加算値μ+σを採用する。また、設定閾値としては、前記ステップS304で算出した複数車両平均燃費μと予め設定した設定値α(>1)との乗算値μ×αを採用する。これにより、変数iの数値と同一のレコード群IDが表すレコードが含んでいる道路区間(道路リンクID)、時間帯、車種(車種識別情報)、および曜日の組合せでは、運転支援機能の提供が必要であるか否かを判定する。そして、燃費ばらつき管理部14は、複数台の車両Cの燃費のばらつきμ+σが設定閾値μ×αより大きいと判定した場合には(Yes)、運転支援機能の提供が必要であると判定し、ステップS306に移行する。一方、燃費ばらつき管理部14は、複数台の車両Cの燃費のばらつきμ+σが設定閾値μ×α以下であると判定した場合には(No)、運転支援機能の提供が不要であると判定し、ステップS307に移行する。 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.
 前記ステップS306では、燃費ばらつき管理部14は、燃費ばらつき管理データベース13(図5参照)のレコードを作成する。続いて、燃費ばらつき管理部14は、作成したレコードのエコ運転支援フラグをON状態とした後、ステップS308に移行する。
 一方、前記ステップS307では、燃費ばらつき管理部14は、燃費ばらつき管理データベース13(図5参照)のレコードを作成する。続いて、燃費ばらつき管理部14は、作成したレコードのエコ運転支援フラグをOFF状態とした後、前記ステップS308に移行する。
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.
 前記ステップS308では、燃費ばらつき管理部14は、前記ステップS306またはS307で作成したレコード(図5参照)の閾値燃費を設定する。閾値燃費としては、前記ステップS304で算出した複数車両平均燃費μ、または標準偏差σと予め設定した設定値βとの乗算値と複数車両平均燃費μとの加算値(σ×β+μ)を採用する。 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. .
 続いてステップS309に移行して、燃費ばらつき管理部14は、前記ステップS306またはS307で作成したレコード(図5参照)の道路リンクID、車種識別情報、時間帯、および曜日を設定する。道路リンクID、車種識別情報、時間帯、および曜日としては、前記ステップS304で複数車両平均燃費μの算出に用いたレコード群が含んでいる道路リンクID、車種識別情報、時間帯、および曜日を採用する。続いて、燃費ばらつき管理部14は、設定後のレコードを燃費ばらつき管理データベース13に記憶させる。 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 week 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.
 続いてステップS310に移行して、燃費ばらつき管理部14は、変数iがレコード群の総数m以上であるか否かを判定する。そして、燃費ばらつき管理部14は、変数iがレコード群の総数m以上であると判定した場合には(Yes)この演算処理を終了する。一方、燃費ばらつき管理部14は、変数iがレコード群の総数m未満であると判定した場合には(No)前記ステップS303に戻る。 Subsequently, the process proceeds to step S310, and the fuel consumption variation management unit 14 determines whether the variable i is equal to or greater than the total number m of the record group. 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.
 次に、テレマティクスセンタBの燃費ばらつき管理部14が実行するエコ運転支援表示判断情報生成処理について説明する。エコ運転支援表示判断情報生成処理は、コントローラ9が燃費情報および車種識別情報を送信した場合に実行する。
 図10は、エコ運転支援表示判断情報生成処理を表すフローチャートである。
 図10に示すように、ステップS401では、燃費ばらつき管理部14は、ナビゲーション装置1が送信した燃費情報および車種識別情報を受信する。
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.
 続いてステップS402に移行して、燃費ばらつき管理部14は、前記ステップS401で受信した燃費情報と同一の道路リンクID、日時(日時が表す時間帯)、曜日、および当該燃費情報とともに受信した車種識別情報を含んでいるレコードを燃費ばらつき管理データベース13(図5参照)から読み出す。
 続いてステップS403に移行して、燃費ばらつき管理部14は、前記ステップS402で読み出したレコードから車種識別情報、日時および曜日を除いたものをエコ運転支援表示判断情報(図6参照)としてナビゲーション装置1に送信した後、この演算処理を終了する。ここで、エコ運転支援表示判断情報の送信先は、前記ステップS401で受信した燃費情報および車種識別情報の送信元の車両Cのナビゲーション装置1とする。
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.
(動作その他)
 次に、車両用情報提供システムSの動作について説明する。
 まず、エコ運転支援フラグおよび閾値燃費の設定動作について説明する。
 複数台の車両Cのナビゲーション装置1のいずれかが、燃費情報および車種識別情報を情報提供判定装置2に送信したとする。すると、情報提供判定装置2が、この燃費情報および車種識別情報をフィールド値とするレコードを燃費管理データベース12(図4参照)に記憶する。続いて、情報提供判定装置2が、燃費管理データベース12が記憶しているレコードのうち、道路リンクID、車種識別情報、時間帯、および曜日のフィールド値が互いに同一のレコード毎に、複数車両平均燃費μと標準偏差σとを算出する。これにより、道路区間(道路リンクID)、車種識別情報、時間帯、および曜日の組合せ毎に、複数車両平均燃費μと標準偏差σとを算出する(図9のステップS301~S304)。
(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 average vehicle fuel efficiency 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).
 ここで、車速が高く、各車両C間における燃費のばらつきが大きい道路区間が存在したとする。そして、この道路区間では、算出した複数台の車両Cの燃費のばらつきμ+σが設定閾値μ×αより大きかったとする(図9のステップS305、Yes)。すると、情報提供判定装置2が、エコ運転支援フラグをON状態とし(図9のステップS306)、閾値燃費をμとしてレコードを作成する(図9のステップS308)。そして、情報提供判定装置2が、作成したレコードに、この道路区間を表す道路リンクIDを含ませて燃費ばらつき管理データベース13(図5参照)に記憶させる(図9のステップS309)。 Here, it is assumed that there is a road section where the vehicle speed is high and the fuel consumption variation between 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).
 一方、車速が低く、各車両C間における燃費のばらつきが小さい道路区間が存在したとする。そして、この道路区間では、算出した複数台の車両Cの燃費のばらつきμ+σが設定閾値μ×α以下であったとする(図9のステップS305、No)。すると、情報提供判定装置2が、エコ運転支援フラグをOFF状態とし(図9のステップS307)、閾値燃費をμとしてレコードを作成する(図9のステップS308)。そして、情報提供判定装置2が、作成したレコードに、この道路区間を表す道路リンクIDを含ませて燃費ばらつき管理データベース13(図5参照)に記憶させる(図9のステップS309)。
 これにより、道路区間毎に、エコ運転支援フラグおよび閾値燃費を設定する。
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.
 次に、案内情報および運転支援情報の提供動作について説明する。
 車両C(以下、車両C1とも呼ぶ)の走行中に、車両C1の運転者が運転支援機能を呼び出したとする。すると、車両C1のナビゲーション装置1が、運転支援機能の提供の要否の判定を行う判定道路区間を特定する(図8のステップS201)。続いて、車両C1のナビゲーション装置1が、特定した判定道路区間を表す道路リンクIDを含んでいるレコード(燃費情報)を燃費情報データベース8(図2参照)から読み出す。続いて、車両C1のナビゲーション装置1が、読み出した燃費情報および車両C1の車種を表す車種識別情報を情報提供判定装置2に送信する(図8のステップS202)。
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).
 車両C1のナビゲーション装置1が燃費情報および車種識別情報を送信すると、情報提供判定装置2が、この燃費情報および車種識別情報を受信する(図10のステップS401)。続いて、情報提供判定装置2が、受信した燃費情報と同一の道路リンクID、日時(日時が表す時間帯)、曜日、および当該燃費情報とともに受信した車種識別情報を含んでいるレコードを燃費ばらつき管理データベース13(図5参照)から読み出す(図10のステップS402)。続いて、情報提供判定装置2が、読み出したレコードから車種識別情報、日時および曜日を除いたものをエコ運転支援表示判断情報(図6参照)として車両C1のナビゲーション装置1に送信する(図10のステップS403)。そして、情報提供判定装置2がエコ運転支援表示判断情報を送信すると、車両C1のナビゲーション装置1が、このエコ運転支援表示判断情報を受信する(図8のステップS203)。 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).
 ここで、車両C1が現在走行中の道路区間が、車速が高く、各車両C間における燃費のばらつきが大きい道路区間であったとする。そして、受信したエコ運転支援表示判断情報(図6参照)のうち、現在道路リンクIDを含んでいるエコ運転支援表示判断情報のエコ運転支援フラグがON状態であったとする(図8のステップS204、Yes)。すなわち、燃費管理データベース12が記憶している燃費情報(平均燃費)のうち、車両C1が現在走行中の道路区間における平均燃費のばらつきμ+σが設定閾値μ×αより大きかったとする。また、車両C1の運転者のエコ運転(省燃費運転)の運転技量が低く、燃費情報データベース8(図2参照)が記憶しているレコードのうち、現在道路リンクIDを含んでいるレコードの平均燃費が閾値燃費より低かった(悪かった)とする(図8のステップS205、No)。すると、車両C1のナビゲーション装置1(エコ運転支援情報生成部9b)が、エコ運転支援情報表示許可指令をルート案内情報生成部9cに出力する(図8のステップS206)。 Here, it is assumed that the road section in which the vehicle C1 is currently traveling is a road section where the vehicle speed is high and the fuel consumption variation among the vehicles C is large. 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).
 ナビゲーション装置1がエコ運転支援情報表示許可指令を出力すると、ルート案内情報生成部9cが、支援情報表示指令を表示部10に出力する。そして、ルート案内情報生成部9cが支援情報表示指令を出力すると、表示部10が、案内情報を表示画面の左側に寄せて表示し、運転支援情報を表示画面の右側に表示する(図3(b)参照)。 When the navigation device 1 outputs the eco-drive support information display permission command, the route guidance information generation unit 9c outputs the 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)).
 このように、本実施形態では、複数台の車両Cの燃費のばらつきμ+σが設定閾値μ×αより大きい場合に、エコ運転支援フラグをON状態とし、運転支援情報を表示部10の表示画面の右側に表示する構成とした(図9のステップS305、S306)。それゆえ、ばらつきμ+σが設定閾値μ×αより大きく、燃費向上の余裕しろがある道路区間では、運転支援情報を表示して、運転者が省燃費運転を心がけることで、車両C1の燃費を向上できる。また、運転者が省燃費運転を心がけることで、燃費が高い(良い)ことを示す運転支援情報、つまり、単位燃料当たりの走行距離が長いことを示す運転支援情報が表示されることになる。これにより、運転者は、省燃費運転を心がけた場合には、燃費が高い(良い)ことを示す運転支援情報を視認することになる。そのため、運転者は、運転支援情報に対する違和感が抑制され、運転支援情報に対する信頼感が向上する。 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.
 また、エコ運転(省燃費運転)は、運転者の集中力を必要とする。それゆえ、運転中常に継続することは困難であった。これに対し、本実施形態では、燃費向上の余裕しろがある道路区間を走行中である場合にのみ、運転支援情報を表示する。それゆえ、車両C1の運転者はエコ運転(省燃費運転)に気を付けるタイミングを知ることができる。そのため、運転者は、エコ運転(省燃費運転)をより適切に行うことができる。 Also, 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.
 一方、車両C1の運転者のエコ運転(省燃費運転)の運転技量が高く、燃費情報データベース8(図2参照)が記憶しているレコード(燃費情報)のうち、現在道路リンクIDを含んでいるレコードの平均燃費が閾値燃費より良かったとする(図8のステップS205、Yes)。すると、車両C1のナビゲーション装置1(エコ運転支援情報生成部9b)が、エコ運転支援情報表示禁止指令をルート案内情報生成部9cに出力する(図8のステップS207)。車両C1のナビゲーション装置1がエコ運転支援情報表示禁止指令を出力すると、ルート案内情報生成部9cが、案内情報表示指令を表示部10に出力する。そして、ルート案内情報生成部9cが案内情報表示指令を出力すると、表示部10が、案内情報を表示画面全体に表示し、運転支援情報の表示を禁止する。 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.
 このように、本実施形態では、車両C1の平均燃費の数値が閾値燃費より高い場合に、車両C1の表示部10の表示画面への運転支援情報の表示を禁止する構成とした(図8のステップS205~S207)。それゆえ、車両C1の燃費が良く、車両C1の運転者が運転を実行できており、車両C1の運転者にエコ運転の実行を促す注意喚起する必要がない場合に、運転支援情報を表示画面に表示せずに済む。これにより、運転支援情報に対する違和感をより抑制し、信頼感をより向上することができる。また、誘導経路へ車両C1を案内する案内情報の視認性の低下を抑制できる。すなわち、ナビゲーション装置1本来の機能(ルート案内、地図表示)が見難くなるケースを少なくすることができる。また、車両C1の運転者はエコ運転に気を付けるタイミングを知ることができる。 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.
 また一方、車両C1が現在走行中の道路区間が、車速が低く、各車両C間における燃費のばらつきが小さい道路区間であったとする。そして、受信したエコ運転支援表示判断情報(図6参照)のうち、現在道路リンクIDを含んでいるエコ運転支援表示判断情報のエコ運転支援フラグがOFF状態であったとする(図8のステップS204、No)。すなわち、燃費管理データベース12が記憶している燃費情報(平均燃費)のうち、車両C1が現在走行中の道路区間における平均燃費のばらつきμ+σが設定閾値μ×α以下であったとする。すると、車両C1のナビゲーション装置1(エコ運転支援情報生成部9b)が、エコ運転支援情報表示禁止指令をルート案内情報生成部9cに出力する(図8のステップS207)。車両C1のナビゲーション装置1がエコ運転支援情報表示禁止指令を出力すると、ルート案内情報生成部9cが、案内情報表示指令を表示部10に出力する。そして、ルート案内情報生成部9cが案内情報表示指令を出力すると、表示部10が、案内情報を表示画面全体に表示し、運転支援情報の表示を禁止する。 On the other hand, it is assumed that the road section in which the vehicle C1 is currently traveling is a road section with a low vehicle speed and a small 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 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.
 このように、本実施形態では、燃費のばらつきμ+σが設定閾値μ×α以下である場合に、エコ運転支援フラグをOFF状態とし、表示部10の表示画面への運転支援情報の表示を禁止する構成とした(図9のステップS305、S307)。それゆえ、ばらつきμ+σが設定閾値μ×α以下であり、燃費向上の余裕しろがない道路区間では、運転支援情報を表示しないことで、運転者が省燃費運転を心がけても、燃費が低い(悪い)ことを示す運転支援情報、つまり、単位燃料当たりの走行距離が短いことを示す運転支援情報が表示されてしまうことを抑制できる。そのため、運転者は、運転支援情報に対する違和感が抑制され、運転支援情報に対する信頼感が向上する。また、運転支援情報を表示画面に表示しないことで、案内情報の視認性の低下を抑制できる。 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 can be suppressed that the driving support information indicating that the driving distance per unit fuel is short, that is, the driving support information indicating that the driving distance per unit fuel is short is displayed. 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.
 本実施形態では、図1のナビゲーション装置1が車両用情報提供装置を構成する。以下同様に、図1のGPS受信部6が車両位置検出部を構成する。また、図1のエコ運転支援情報生成部9b、図8のステップS204が道路区間特定部を構成する。また、図1の燃費管理データベース12がエネルギー消費率情報記憶部を構成する。さらに、図1のエコ運転支援情報生成部9b、ルート案内情報生成部9c、表示部10、燃費ばらつき管理部14、ステップS204、S206、S207、図9のステップS305~S307が運転支援情報表示部を構成する。また、図1の燃費演算部9a、図7のステップS103が平均値算出部を構成する。さらに、図1の燃費情報データベース8が平均値記憶部を構成する。また、図1のエコ運転支援情報生成部9b、ステップS205~S207が運転支援情報表示禁止部を構成する。また、閾値燃費が設定消費率を構成する。さらに、車両用情報提供システムSが車両用情報提供システムを構成する。また、図1の情報提供判定装置2が情報提供判定装置を構成する。さらに、図1のテレマティクス通信部11が情報提供装置側受信部および情報提供装置側送信部を構成する。さらに、図1の燃費ばらつき管理部14が情報提供装置側受信部および情報提供装置側送信部を構成する。また、図1の燃費ばらつき管理部14、図9のステップS208が設定消費率設定部を構成する。 In the present embodiment, the navigation device 1 in 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.
(本実施形態の効果)
 本実施形態は、次のような効果を奏する。
(1)ナビゲーション装置1が、自車両Cが走行する道路区間における燃費のばらつきμ+σが設定閾値μ×αより大きい場合に、省燃費運転に関する情報である運転支援情報を表示する(図8のステップS204、S206)。
 このような構成によれば、エネルギー消費率のばらつきμ+σが設定閾値μ×αより大きい、すなわち、エネルギー消費率向上の余裕しろが大きい道路区間では、運転支援情報を表示することで、運転支援情報に対する違和感を抑制し、信頼感を向上することができる。換言すれば、エネルギー消費率のμ+σが設定閾値μ×α以下、すなわち、エネルギー消費率向上の余裕しろが小さい道路区間では、運転支援情報を表示画面に表示しないことで、運転支援情報に対する違和感を抑制し、信頼感を向上することができる。
(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)ナビゲーション装置1が、自車両Cが走行している道路区間における自車両Cの平均燃費の数値が閾値燃費より高い場合に、運転支援情報の表示を禁止する(図8のステップS205、S207)。
 このような構成によれば、例えば、車両Cの燃費が閾値燃費より良く、車両Cの運転者に注意喚起する必要がない場合には、運転支援情報を表示画面に表示しない。これにより、運転支援情報に対する違和感をより抑制し、信頼感をより向上することができる。
(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)ナビゲーション装置1が、車両Cが走行する道路区間における燃費のばらつきμ+σが設定閾値μ×αより大きい場合には、当該道路区間への自車両Cの進入時または進入前に、運転支援情報を表示画面の一部に表示する(図8のステップS206)。
 このような構成によれば、燃費向上の余裕しろがある道路区間を車両Cが走行する前に、運転(省燃費運転)をする必要があることを車両Cの運転者に注意喚起できる。
(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)情報提供判定装置2が、ナビゲーション装置1が送信した燃費情報(燃費の平均値)に基づき、道路区間毎に、複数車両平均燃費μ、または複数車両平均燃費μと標準偏差σとの加算値μ+σを算出して閾値燃費とする(図9のステップS308)。
 このような構成によれば、道路状況に応じて、より適切な閾値燃費を設定できる。これにより、運転支援情報をより適切なタイミングに提供できる。
(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.
(変形例1)
 図11は、車両用情報提供システムSの概略構成を示す図である。
 本実施形態では、燃費演算部9aが、運転者に関わらず、車両Cの平均燃費を道路区間毎に算出する例を示したが、他の構成を採用することもできる。例えば、燃費演算部9aが、運転者毎に、車両Cの平均燃費を道路区間毎に算出する構成としてもよい。
(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.
 具体的には、図11に示すように、ナビゲーション装置1が、自車両Cの運転者を特定する運転者特定部15を備える。運転者特定部15としては、例えば、運転者の顔画像を撮影し、撮影結果に基づき運転者を特定する装置等を採用できる。また、燃費演算部9aが、燃料噴射量検出部5が検出した燃料噴射量、および車速検出部4が検出した車速に基づき、自車両Cが走行する道路区間および運転者特定部15が特定した運転者毎に、自車両Cの燃費の平均値を道路区間毎に算出する。続いて、燃費演算部9aが、算出した自車両Cの燃費の平均値を燃費情報データベース8(図2参照)に記憶させる。続いて、燃費演算部9aが、燃費情報データベース8が記憶している自車両Cの燃費の平均値のうち、自車両Cが走行する道路区間における、運転者特定部15が特定した運転者による自車両Cの燃費の平均値が閾値燃費より高い場合に、自車両Cにおける運転支援情報の表示を禁止する。 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.
 これにより、例えば、複数の運転者が一台の車両Cを利用している場合に、エコ運転(省燃費運転)の運転技量が高く、車両Cの燃費が高い(良い)運転者が運転している場合には、運転支援情報を表示画面に表示しない。また、例えば、エコ運転(省燃費運転)の運転技量が低く、車両Cの燃費が悪い運転者が運転している場合には、運転支援情報を表示画面に表示する。これにより、運転者のエコ運転(省燃費運転)の運転技量に応じて、運転支援情報をより適切なタイミングに提供できる。
 本変形例では、図11の運転者特定部15が運転者特定部を構成する。
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 a driver | operator's eco-driving (fuel-saving driving | operation), driving assistance information can be provided at a more suitable timing.
In this modification, the driver specifying unit 15 in FIG. 11 constitutes the driver specifying unit.
(変形例1の効果)
 本変形例は、第1実施形態の(1)~(4)の効果に加え次のような効果を奏する。
(1)ナビゲーション装置1が、運転者特定部15が特定した運転者毎に、自車両Cの平均燃費を道路区間毎に算出する。続いて、ナビゲーション装置1が、自車両Cが走行している道路区間における、運転者特定部15が特定した運転者による自車両Cの平均燃費の数値が閾値燃費より高い場合に、自車両Cにおける表示画面への運転支援情報の表示を禁止する。
 このような構成によれば、例えば、運転者のエコ運転(省燃費運転)の運転技量に応じて、運転支援情報をより適切なタイミングに提供できる。
(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).
(変形例2)
 図12は、車両用情報提供システムSの概略構成を示す図である。
 本実施形態では、自車両Cと通信可能なテレマティクスセンタBが燃費ばらつき管理データベース13を有し、燃費ばらつき管理データベース13に道路区分毎にテレマティクスセンタBで算出した燃費を複数記憶させる例を示したが、他の構成を採用することもできる。例えば、図12に示すように、自車両Cのナビゲーション装置1に車両側記憶部16を搭載し、車両側記憶部16に道路区分毎に燃費を予め複数記憶させておく構成としてもよい。この場合、燃費ばらつき管理データベース13および燃費ばらつき管理部14に代えて、燃費演算部9aおよび車両側記憶部16を使用する。これにより、この変形例では、ナビゲーション装置1単体で車両用情報提供システムSを実現できる。
(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.
 また、例えば、図12に示すように、自車両Cのナビゲーション装置1に車両側記憶部16を搭載し、車両側記憶部16に道路区分毎に自車両Cの過去の燃費を複数記憶する構成としてもよい。この場合、燃費ばらつき管理データベース13および燃費ばらつき管理部14に代えて、燃費演算部9aおよび車両側記憶部16を使用する。これにより、この変形例では、ナビゲーション装置1単体で車両用情報提供システムSを実現できる。
 本実施形態では、図1の燃費ばらつき管理部14がセンタ側記憶部を構成する。以下同様に、図12の車両側記憶部16が車両側記憶部を構成する。
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.
(変形例2の効果)
 本変形例は、第1実施形態の(1)~(4)の効果に加え次のような効果を奏する。
(1)車両Cに搭載され道路区間毎に燃費を予め複数記憶している車両側記憶部16、車両Cに搭載され道路区間毎に当該車両Cの過去の燃費を複数記憶している車両側記憶部16、または車両Cと通信可能なテレマティクスセンタが有し道路区間毎に当該テレマティクスセンタで算出した燃費を複数記憶している燃費ばらつき管理データベース13を備える。
(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.
 このような構成によれば、ナビゲーション装置1と情報提供判定装置2との組合せ、ナビゲーション装置1単体等、様々な態様で車両用情報提供システムを実現できる。
 以上、本願が優先権を主張する日本国特許出願2012-91124(2012年4月12日出願)の全内容は、参照により本開示の一部をなす。
 ここでは、限られた数の実施形態を参照しながら説明したが、権利範囲はそれらに限定されるものではなく、上記の開示に基づく各実施形態の改変は当業者にとって自明なことである。
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 constitute a 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  情報提供判定装置(情報提供判定装置)
6  GPS受信部(車両位置検出部)
8  燃費情報データベース(平均値記憶部)
9a 燃費演算部(平均値算出部)
9b エコ運転支援情報生成部(道路区間特定部、運転支援情報表示部、運転支援情報表示禁止部)
9c ルート案内情報生成部(運転支援情報表示部)
10 表示部(運転支援情報表示部)
11 テレマティクス通信部(情報提供装置側受信部、情報提供装置側送信部)
12 燃費管理データベース(エネルギー消費率情報記憶部)
13 燃費ばらつき管理データベース(センタ側記憶部)
14 燃費ばらつき管理部(運転支援情報表示部、設定閾値設定部、情報提供装置側受信部、情報提供装置側送信部)
15 運転者特定部15(運転者特定部)
16 車両側記憶部(車両側記憶部)
S  車両用情報提供システム(車両用情報提供システム)
ステップS103(平均値算出部)
ステップS204(道路区間特定部、運転支援情報表示部)
ステップS205(運転支援情報表示禁止部)
ステップS208(設定閾値設定部)
ステップS206、S207(運転支援情報表示部、運転支援情報表示禁止部)
ステップS305~S307(運転支援情報表示部)
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)

  1.  自車両の現在位置を検出する車両位置検出部と、
     前記車両位置検出部が検出した現在位置に基づき、自車両が走行する道路区間を特定する道路区間特定部と、
     道路区間毎に単位エネルギー当たりの走行距離を表すエネルギー消費率を複数記憶しているエネルギー消費率情報記憶部と、
     前記エネルギー消費率情報記憶部が記憶しているエネルギー消費率のうち、前記道路区間特定部が特定した道路区間におけるエネルギー消費率のばらつきが設定閾値より大きい場合に、省エネルギー運転に関する情報である運転支援情報を表示する運転支援情報表示部と、を備えたことを特徴とする車両用情報提供装置。
    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.
  2.  前記道路区間特定部が特定した道路区間に基づき、自車両のエネルギー消費率の平均値を道路区間毎に算出する平均値算出部と、
     前記平均値算出部が算出した自車両のエネルギー消費率の平均値を記憶する平均値記憶部と、
     前記平均値記憶部が記憶している自車両のエネルギー消費率の平均値のうち、前記道路区間特定部が特定した道路区間における自車両のエネルギー消費率の平均値が設定消費率より高い場合に、前記運転支援情報の表示を禁止する運転支援情報表示禁止部と、を備えることを特徴とする請求項1に記載の車両用情報提供装置。
    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.
  3.  自車両の運転者を特定する運転者特定部を備え、
     前記平均値算出部は、前記運転者特定部が特定した運転者毎に、自車両のエネルギー消費率の平均値を道路区間毎に算出し、
     前記平均値記憶部は、前記平均値算出部が算出した運転者毎の自車両のエネルギー消費率の平均値を記憶し、
     前記運転支援情報表示禁止部は、前記平均値記憶部が記憶している自車両のエネルギー消費率の平均値のうち、前記道路区間特定部が特定した道路区間における、前記運転者特定部が特定した運転者による自車両のエネルギー消費率の平均値が前記設定消費率より高い場合に、前記運転支援情報の表示を禁止することを特徴とする請求項2に記載の車両用情報提供装置。
    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.
  4.  前記エネルギー消費率情報記憶部は、自車両に搭載され道路区間毎にエネルギー消費率を予め複数記憶している車両側記憶部、自車両に搭載され道路区間毎に自車両の過去のエネルギー消費率を複数記憶している車両側記憶部、または自車両と通信可能な情報提供判定装置が有し道路区間毎に当該情報提供判定装置で算出したエネルギー消費率を複数記憶しているセンタ側記憶部のいずれかであることを特徴とする請求項1から3のいずれか1項に記載の車両用情報提供装置。 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.
  5.  前記運転支援情報表示部は、前記エネルギー消費率情報記憶部が記憶しているエネルギー消費率のうち、前記道路区間特定部が特定した道路区間におけるエネルギー消費率のばらつきが前記設定閾値より大きい場合には、前記道路区間特定部が特定した前記道路区間への自車両の進入時または進入前に、前記運転支援情報を表示することを特徴とする請求項1から4のいずれか1項に記載の車両用情報提供装置。 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.
  6.  請求項2または3に記載の車両用情報提供装置と、前記車両用情報提供装置と通信可能な情報提供判定装置と、を備え、
     前記車両用情報提供装置は、
     前記設定消費率の情報を前記情報提供判定装置から受信する情報提供装置側受信部と、
     前記平均値算出部が算出した自車両のエネルギー消費率の平均値を前記情報提供判定装置に送信する情報提供装置側送信部と、を備え、
     前記情報提供判定装置は、
     前記情報提供装置側送信部が送信したエネルギー消費率の平均値を受信する情報提供判定装置側受信部と、
     前記情報提供判定装置側受信部が受信したエネルギー消費率の平均値に基づき、道路区間毎に、複数台の車両のエネルギー消費率の平均値または平均値と標準偏差との加算値を算出して前記設定消費率とする設定消費率設定部と、
     前記設定消費率設定部が設定した前記設定消費率を前記車両用情報提供装置に送信する情報提供判定装置側送信部と、を備えることを特徴とする車両用情報提供システム。
    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.
PCT/JP2013/001330 2012-04-12 2013-03-04 Vehicular information supply device and vehicular information supply system WO2013153733A1 (en)

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