JP2015030378A - On-vehicle information device and method for displaying information on predicted energy consumption - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an on-vehicle information device which performs without communication, can be inexpensively mounted even on a popular vehicle and can execute an accurate prediction of fuel efficiency to present the same to a user and to provide a method for displaying information on predicted energy consumption.SOLUTION: In an on-vehicle information device 10, an information storage section 12 stores performance data; a calculation section 13 calculates a predicted energy consumption amount of a vehicle or predicted energy consumption information indicating a travelable range with the predicted energy consumption amount on the basis of the stored performance data and current measurement data; and an indicator 1 displays the predicted energy consumption amount or the predicted energy consumption information. Thus, the on-vehicle information device 10: does not require additional establishment of a large scale system; performs without communication; can be inexpensively mounted even on a popular vehicle; and can execute simple but accurate prediction of fuel efficiency (a travel distance per unit energy) to present the same to a user.

Description

  The present invention relates to an in-vehicle information device and a predicted energy consumption information display method for predicting and presenting energy consumption in a vehicle such as an automobile.

In recent years, in vehicles such as automobiles, so-called “fuel consumption” has become an important concern for users in all types of vehicles ranging from low to high price due to soaring fuel costs.
However, the fuel consumption of a vehicle such as an automobile is described in the catalog value of the manufacturer, but there is a big gap between the practical fuel consumption.

  For example, in the catalog value, the fuel efficiency of the vehicle is 10 km / liter, so if you have 20 liters of gasoline remaining, you can drive with a sufficient margin even if you go to a place 150 km away. Even if this occurs, there may be a situation where fuel depletion occurs earlier than expected. This difference is particularly noticeable in a vehicle with a small displacement (low price range vehicle) in which the fluctuation range of consumed energy increases depending on the presence or absence of a passenger and the load weight of luggage.

  In order to deal with such a problem, for example, Patent Document 1 proposes an advanced system that performs fuel consumption prediction via a server on an external network. In this way, there is a multifunctional in-vehicle information communication system in the market, equipped with a wireless communication function or equipped with a wireless communication function in cooperation with a portable information terminal, and accesses an external server to perform two-way data communication The system is also becoming popular.

JP 2004-145727 A

  However, for example, the conventional technology as shown in Patent Document 1 employs a large-scale system, so that the installation and operation of a server on an external network, system development, in-vehicle wireless communication function equipment, etc. There is a problem that it is difficult to mount the vehicle on a medium / low price vehicle called a so-called popular car.

  The present invention has been made in order to solve the above-described problems, and can be mounted on a passenger car without communication and without cost, and has high fuel efficiency (travel distance per unit energy). It is an object of the present invention to provide an in-vehicle information device and a predicted energy consumption information display method that can execute prediction and present it to a user.

  In order to achieve the above object, according to the present invention, in an in-vehicle information device brought into or mounted on a vehicle, the travel distance of the vehicle, the remaining energy due to the travel, and the number of passengers or the loaded weight of the vehicle in the travel are acquired. An information acquisition unit, a calculation unit that calculates a travel distance per unit energy of the vehicle based on the travel distance acquired by the information acquisition unit and the remaining energy, and the calculation unit calculated by the calculation unit An information storage unit that stores the travel distance per unit energy of the vehicle in association with at least one of the number of passengers or the loaded weight acquired by the information acquisition unit, and displays various information in response to an instruction from the calculation unit A display control unit to be displayed on the apparatus, wherein the calculation unit is a unit energy corresponding to the number of passengers or the loaded weight acquired by the information acquisition unit. The travel distance per unit energy is acquired from the information storage unit, the average travel distance per unit energy is calculated, and the average travel distance per unit energy and the energy acquired by the information acquisition unit are calculated. Based on the remaining amount, the predicted energy consumption information indicating the predicted consumption amount of energy in the vehicle or the range that can be traveled by the predicted consumption amount is calculated, and the calculated predicted energy consumption information is displayed on the display device. The display control unit is instructed to display.

  According to the present invention, it is not necessary to construct a large-scale system additionally, communication is not required, it can be mounted on a passenger car without cost, and simple but highly accurate fuel consumption (per unit energy) Mileage) prediction can be executed and presented to the user.

1 is a block diagram illustrating a configuration of an in-vehicle information device in Embodiment 1. FIG. It is a table which shows an example of the performance data memorize | stored in the information storage part. 5 is a flowchart illustrating an operation when the calculation unit of the in-vehicle information device according to Embodiment 1 calculates the predicted energy consumption by the number of passengers. It is a figure which shows the example of a display of prediction energy consumption information. 5 is a flowchart illustrating an operation when the calculation unit of the in-vehicle information device according to Embodiment 1 calculates the predicted energy consumption by weighting. 6 is a block diagram illustrating a configuration of a navigation device in Embodiment 2. FIG.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
Embodiment 1 FIG.
FIG. 1 is a block diagram showing the configuration of the in-vehicle information device according to Embodiment 1 of the present invention. The in-vehicle information device 10 includes an information acquisition unit 11, an information storage unit 12, a calculation unit 13, and a display control unit 14. The in-vehicle information device 10 is installed and used in a vehicle such as an automobile, and is connected to at least the display device 1.

  The information acquisition unit 11 acquires the travel distance and the remaining fuel value due to the travel from the meter unit 2 that measures the travel distance record and the remaining fuel value (remaining energy), and recognizes the engine state (ON or OFF). The engine status is obtained from each of the weight sensors 4 (4-1, 4-2,...) That measure the load weight provided in each seat (driver seat, passenger seat, rear left seat, rear center seat, rear right seat) and trunk room. ·········································· 6-6) Also notify.

Among the weight sensors 4, sensors 4-1 to 4-5 provided in the respective seats are sensors for measuring the loaded weight in the respective seats, and notify the weight values. In addition, a load sensor 4-6 is also provided in the trunk room so that the load weight of luggage other than the passenger can be measured.
The load sensor 4 is provided with a vehicle by default, but if it is not provided, it needs to be additionally attached.

The face authentication unit 5 is a unit that determines a human face from an in-car image captured by the camera unit 7. By determining the face, the face authentication unit 5 recognizes the number of passengers and notifies the information acquisition unit 11. In addition, it is possible to determine not only the number of passengers but also the difference between whether the passenger is an adult or a child and the difference between men and women.
If the face authentication unit 5 and the camera unit 7 are not provided, it is necessary to attach them.

  The seat unit 6 includes seat belt sensors 8 (8-1, 8-2, 8-1, 8-2) that detect whether or not the seat belt is provided in each seat (driver seat, passenger seat, rear left seat, rear center seat, rear right seat). .., 8-5), the presence / absence of the seat belt is determined to determine the number of passengers and the information acquisition unit 11 is notified. In recent years, there are many vehicles equipped with the seat belt sensor 8 for detecting whether or not the seat belt is worn.

Here, the number of seats will be described as five (the driver seat, the passenger seat, the rear left seat, the rear center seat, and the rear right seat), but the number of seats varies depending on the type of vehicle (vehicle type).
In FIG. 1, the weight sensor 4, the face authentication unit 5, and the seat unit 6 are all provided. However, the weight sensor 4 obtains a weight value and the face authentication unit 5 or the seat unit 6 takes the number of passengers. If any one of the above acquisitions is acquired, the fuel consumption (travel distance per unit energy) prediction calculation can be performed. Therefore, any one of the weight sensor 4, the face authentication unit 5, and the seat unit 6 is I just need it.

  The information storage unit 12 calculates fuel consumption (travel distance per unit energy) based on travel distance and remaining fuel value (remaining energy) as actual data detected by each unit and each sensor (2-8). Is stored in association with at least one of the number of passengers or the loaded weight.

FIG. 2 is a table showing an example of performance data stored in the information storage unit 12, and results of the number of passengers, loading weight, and fuel consumption (travel distance per unit energy) as shown in FIG. The value and the catalog fuel consumption value for the vehicle as shown in FIG. 2B are stored.
The number (No.) of the record data shown in FIG. 2A is determined by the capacity of the information storage unit 12, but may be stored up to the maximum capacity, or a certain number of cases (for example, 100) ) May be stored all the time, and the oldest data may be deleted and new data may be stored when the data is more than that.

  The calculation unit 13 is stored in the information storage unit 12, the travel distance received from the information acquisition unit 11, the remaining fuel value (energy remaining amount) due to this travel, and information on the number of passengers or the loaded weight in this travel. Based on the fuel consumption (travel distance per unit energy) and information on the number of passengers or the loaded weight, the predicted energy consumption is calculated, and the display control unit 14 is configured to display the result on the display device 1. Give instructions. Details of the calculation method will be described later with reference to FIGS. 3 and 5.

  Here, the “predicted energy consumption” is the predicted consumption of energy (fuel) in the vehicle, and the “predicted energy consumption information” is the predicted energy consumption, that is, energy (fuel) in the vehicle. Information indicating the predicted consumption, or information indicating a range (predicted fuel consumption) that can be traveled with the predicted consumption. In the first embodiment, it is assumed that the predicted energy consumption information is predicted fuel consumption information.

  In addition to this, information indicating that the predicted travelable distance has decreased, information indicating advice for the decrease in the predicted travelable distance, and refueling because the predicted travelable distance has decreased. It may be driving support information such as information prompting route guidance to a place.

  The display control unit 14 is a control unit that displays various information on the display device 1 such as an LCD (Liquid Crystal Display) or an organic EL display in response to an instruction from the calculation unit 13, and predicts energy consumption information to the user. Display control for presenting (predicted fuel consumption information) is performed. The display device 1 is a display-integrated touch panel, and may be composed of, for example, an LCD and a touch sensor.

FIG. 3 is a flowchart showing an operation when the calculation unit 13 of the in-vehicle information device 10 according to the first embodiment calculates the predicted energy consumption by the number of passengers.
First, the calculation unit 13 determines whether the engine state acquired by the information acquisition unit 11 from the engine unit 3 has been switched from OFF to ON or is ON (step ST1).

  If the engine state has been switched from OFF to ON or is ON (in the case of YES in step ST1), the information acquisition unit 11 acquires the number of passengers acquired from the face authentication unit 5 or the seat unit 6 ( Step ST2), from the record data stored in the information storage unit 12, the number of data matching the number of passengers acquired in step ST2 is acquired (step ST3).

Here, it is assumed that the record data as shown in FIG. 2A is stored in the information storage unit 12, but there is no weight value data in the case of the number of passengers in this way. Actual data may be used.
Here, as a specific example, it is assumed that the number of passengers is two. In this case, since there are 3 data (more than 0) for the number of passengers in the table shown in FIG. 2A (in the case of YES in step ST4), the data corresponding to the number of passengers 2 All fuel consumption (travel distance per unit energy) values are acquired from the information storage unit 12 (step ST5).

  As a result, no. 1, no. 4, no. Since the fuel consumption values of 12.0 km / liter, 10.0 km / liter, and 11.0 km / liter can be obtained from the data of 6, the average fuel consumption value is calculated from the acquired total fuel consumption value and the number of data items (step ST6). . In this case, since the number of data items is 3, 11.0 km / liter is calculated as the fuel efficiency average value.

  Then, based on the average value of the fuel consumption (travel distance per unit energy) calculated in this way and the remaining fuel value (remaining energy) acquired by the information acquisition unit 11, the calculation unit 13, for example, the remaining fuel ( Predicted energy consumption information (predicted fuel consumption information) indicating how many km the vehicle can travel is calculated and output to the display control unit 14 (step ST7). Accordingly, the display control unit 14 instructs the display device 1 to output predicted energy consumption information (predicted fuel consumption information) to be presented to the user. As a result, for example, predicted energy consumption information (prediction) as shown in FIG. Fuel consumption information) 20 is displayed.

  FIG. 4 shows, for example, a case where the remaining fuel value is 10 liters. Based on the average fuel consumption value of 11.0 km / liter calculated in step ST6, the calculation unit 13 calculates the travelable distance and displays it. The control unit 14 creates predicted energy consumption information 20 indicating a range (distance) in which the vehicle can travel, such as “you can travel for another 110 km”, and outputs the predicted energy consumption information 20 on the display screen of the display device 1.

In this case, the predicted energy consumption information 20 may be displayed in different display modes depending on the situation, such as being displayed in yellow when the predicted remaining mileage is 30 km or less, for example.
For predicted energy consumption information in which the error from the catalog fuel consumption value is within a predetermined range, characters such as “ECO” indicating that energy-saving travel is possible (energy-saving travel) are displayed at the same time. May be.

  In addition, the “predicted energy consumption information” includes information indicating that the predicted travelable distance has decreased, information indicating advice for the decrease in the predicted travelable distance, and the predicted travelable distance is small. In the case of driving support information such as information for prompting route guidance to a gas station, the remaining travel distance is predicted to be 30 km or less. Refueling / power supply is necessary ”, for example, predicted energy consumption information 20 indicating that the remaining travelable distance has decreased, predicted energy consumption information 20 indicating advice such as“ Please keep ECO driving ”, The predicted energy consumption information 20 that prompts the route guidance to the gas station is displayed, such as “Would you like to search for a route to stop at the gas station?” It may be so.

  Such predicted energy consumption information 20 may always be output on the display screen, or may be output only when there is a change, or only when requested by the user. For example, it may be output at any frequency.

  On the other hand, in step ST4, when the number of data matching the number of passengers is 0 (NO in step ST4), that is, for example, the number of passengers acquired in step ST2 is 5, and FIG. If there is no data matching the table shown, the data of the closest number of passengers, in this case, No. The fuel efficiency data of 8.0 km / liter is acquired from the data on the number of passengers in 3 and the number is 4 (step ST8).

  Thereafter, when the number of passengers changes (in the case of YES in step ST9) in consideration of the case where the engine is on and off, the information acquisition unit 11 from the meter unit 2 considers that the passenger has got on and off. The calculation unit 13 acquires the acquired travel distance (step ST10), and if there is a change in the travel distance from the previous time (in the case of YES in step ST11), the fuel consumption (travel distance per unit energy) in the past travel results ) The value is calculated (steps ST12 to ST13).

In calculating the fuel consumption value, first, the calculation unit 13 acquires the remaining fuel value (remaining energy) acquired by the information acquisition unit 11 from the meter unit 2 (step ST12), and the previous remaining fuel value (remaining energy) is obtained. The current fuel consumption (energy consumption) is calculated by taking the difference from the current fuel remaining value (energy remaining). Then, the current fuel consumption (travel distance per unit energy) value can be calculated by dividing the calculated current fuel consumption (energy consumption) by the difference between the previous travel distance and the current travel distance (step) ST13).
The fuel consumption (travel distance per unit energy) data calculated in this way is written and stored in the information storage unit 12 as performance data together with the number of passengers (step ST14).

  Further, when the engine state is switched from ON to OFF at the time of checking the engine state in step ST1 (when step ST1 is NO and step ST21 is YES), the travel distance acquired by the information acquisition unit 11 from the meter unit 2 Is obtained (step ST22), and if there is a change in the travel distance from the previous time (in the case of YES in step ST23), the fuel consumption (travel distance per unit energy) value is calculated based on the current travel performance. (Steps ST24 to ST26).

  For calculation of the fuel consumption value, first, the calculation unit 13 acquires the latest number of passengers when the engine is ON, which is acquired by the information acquisition unit 11 from the face authentication unit 5 or the seat unit 6 (step ST24). Then, the calculation unit 13 acquires the current remaining fuel value (energy remaining amount) acquired by the information acquisition unit 11 from the meter unit 2 (step ST25), and the previous remaining fuel value (remaining energy) and the current remaining fuel value. The current fuel consumption (energy consumption) is calculated by taking the difference from the value (remaining energy).

Then, by dividing the calculated current fuel consumption (energy consumption) by the difference between the previous travel distance and the current travel distance, the fuel consumption (travel distance per unit energy) during the current engine ON-OFF period. A value can be calculated (step ST26).
The fuel consumption (travel distance per unit energy) data calculated in this way is written and stored in the information storage unit 12 as performance data together with the number of passengers (step ST27).

  As described above, the performance data is stored in the in-vehicle information device 10, and the predicted energy consumption information is calculated and presented based on the stored performance data and the current measurement data. There is no need to build an additional large-scale system, communication is unnecessary, it can be installed in a passenger car without cost, and simple but accurate fuel consumption (mileage per unit energy) is predicted. It can be executed and presented to the user.

  In addition, every time there is a change in the number of passengers, the estimated energy consumption information is recalculated and presented accordingly. Therefore, more accurate fuel consumption (travel distance per unit energy) can be predicted based on actual data that changes in real time. It can be executed and presented to the user.

The same applies to the calculation of the predicted energy consumption (predicted fuel consumption) by weighting.
FIG. 5 is a flowchart showing an operation when the calculation unit 13 of the in-vehicle information device 10 according to the first embodiment calculates the predicted energy consumption by weighting.
First, the calculation unit 13 determines whether the engine state acquired by the information acquisition unit 11 from the engine unit 3 has been switched from OFF to ON or is ON (step ST31).

  If the engine state has been switched from OFF to ON or is ON (in the case of YES in step ST31), the information acquisition unit 11 acquires the weight value acquired from the weight sensor 4 (step ST32), and information From the record data stored in the storage unit 12, the number of data items matching the weight value acquired in step ST32 is acquired (step ST33).

  Here, it is assumed that the record data as shown in FIG. 2A is stored in the information storage unit 12. However, in the case of using the weight value as described above, there is no data on the number of passengers. Actual data may be used, or as shown in FIG. 2A, actual data having both a weight value and the number of passengers may be used.

  Here, as a specific example, it is assumed that the number of passengers is 2 and the weight is 120 kg. In this case, since the data shown in FIG. 2A has one data with a weight value of 120 kg (more than 0 data) (in the case of YES in step ST34), the fuel consumption of the data that matches the weight value 120kg (in the case of YES) All values (travel distance per unit energy) are acquired from the information storage unit 12 (step ST35).

  As a result, no. Since the fuel consumption value of 10.0 km / liter is obtained from the data of No. 4, the average fuel consumption value is calculated from the acquired total fuel consumption value and the number of data items (step ST36). In this case, since the number of data is one, 10.0 km / liter is calculated as the fuel efficiency average value.

  Then, based on the average value of the fuel consumption (travel distance per unit energy) calculated in this way and the remaining fuel value (remaining energy) acquired by the information acquisition unit 11, the calculation unit 13, for example, the remaining fuel ( Predicted energy consumption information (predicted fuel consumption information) indicating how many km the vehicle can travel with (energy) is calculated and output to the display control unit 14 (step ST37). Accordingly, the display control unit 14 instructs the display device 1 to output predicted energy consumption information (predicted fuel consumption information) to be presented to the user. As a result, for example, predicted energy consumption information (prediction) as shown in FIG. Fuel consumption information) 20 is displayed.

  On the other hand, in step ST34, when the data matching the weight value is 0 (in the case of NO in step ST34), for example, the weight value acquired in step ST32 is 140 kg, which is shown in FIG. If there is no data matching the table, the closest weighted data, in this case, No. The fuel efficiency data 10.0 km / liter is acquired from the data of the number of passengers 4 and the weighted value is 120 kg (step ST38).

  Further, for example, the weight value acquired in step ST32 is 150 kg, there is no data matching the table shown in FIG. No. 2 180kg In the case of 2 of 120 kg of 4, the average value of the two fuel consumption data (in this case 9.5 km / liter) may be adopted, and the number of passengers is also acquired and 2 people If the number of passengers is the same, The fuel consumption data of 4 may be adopted.

In this way, if the number of passengers as well as the weight value is detected and stored as data, it is possible to select data closer to the matching data in more detail.
In addition, when the number of passengers is determined by the face authentication unit 5 (and the camera unit 7), it is possible to detect whether the occupant is an adult or a child, a difference between men and women, and so on. The one close to can be selected.

  In addition, even when the number of passengers is the same, when calculating by weight, such as when loading 10 kg or 20 kg of luggage, the predicted fuel consumption (travel distance per unit energy) can be calculated more precisely. Is possible.

  After that, if the weight changes (in the case of YES in step ST39) considering the case of getting on, getting off, and raising / lowering the luggage while the engine is ON, it is considered that there has been getting on / off or raising / lowering the luggage. The calculation unit 13 acquires the travel distance acquired by the information acquisition unit 11 from the unit 2 (step ST40). If there is a change in the travel distance from the previous time (in the case of YES in step ST41), the travel results up to that point A fuel consumption (travel distance per unit energy) value is calculated (steps ST42 to ST43).

In calculating the fuel consumption value, first, the calculation unit 13 acquires the remaining fuel value (remaining energy) acquired by the information acquiring unit 11 from the meter unit 2 (step ST42), and the previous remaining fuel value (remaining energy) is calculated. The current fuel consumption (energy consumption) is calculated by taking the difference from the current fuel remaining value (energy remaining). Then, the current fuel consumption (travel distance per unit energy) value can be calculated by dividing the calculated current fuel consumption (energy consumption) by the difference between the previous travel distance and the current travel distance (step) ST43).
The fuel consumption (travel distance per unit energy) data calculated in this way is written and stored in the information storage unit 12 as performance data together with the weighted value (step ST44).

  The travel distance acquired by the information acquisition unit 11 from the meter unit 2 also when the engine state is switched from ON to OFF (when Step ST31 is NO and Step ST51 is YES) at the time of checking the engine state at Step ST31. Is obtained (step ST52), and if there is a change in the travel distance from the previous time (in the case of YES in step ST53), the fuel consumption (travel distance per unit energy) value is calculated from the current travel performance. (Steps ST54 to ST56).

  In calculating the fuel consumption value, first, the calculation unit 13 acquires the latest weight value when the engine is ON, which is acquired by the information acquisition unit 11 from the weight sensor 4 (step ST54). Then, the calculation unit 13 acquires the current remaining fuel value (energy remaining amount) acquired by the information acquisition unit 11 from the meter unit 2 (step ST55), and the previous remaining fuel value (energy remaining amount) and the current remaining fuel value. The current fuel consumption (energy consumption) is calculated by taking the value (difference from the remaining energy).

Then, by dividing the calculated current fuel consumption (energy consumption) by the difference between the previous travel distance and the current travel distance, the fuel consumption (travel distance per unit energy) during the current engine ON-OFF period. A value can be calculated (step ST56).
The fuel consumption (travel distance per unit energy) data calculated in this way is written and stored in the information storage unit 12 as performance data together with the weighted value (step ST57).

  In this case as well, every time there is a change in the load weight in the vehicle, the predicted energy consumption information is also recalculated and presented accordingly, so more accurate fuel consumption (per unit energy) Mileage) prediction can be executed and presented to the user.

  As described above, according to the first embodiment, the record data is stored in the information storage unit in the in-vehicle information device, and the predicted energy is based on the stored record data and the current measurement data. Since consumption information is calculated and presented, there is no need to build a large-scale system, communication is unnecessary, it can be installed in a passenger car without cost, and it is simple but accurate. It is possible to perform prediction with high fuel efficiency (travel distance per unit energy) and present it to the user.

Embodiment 2. FIG.
FIG. 6 is a block diagram showing a configuration of the navigation device in Embodiment 2 of the present invention. In addition, the same code | symbol is attached | subjected to the structure similar to what was demonstrated in Embodiment 1, and the overlapping description is abbreviate | omitted. In the second embodiment described below, all the functions of the in-vehicle information device 10 in the first embodiment are predicted by the navigation device 100 which is a device that is installed and used in a vehicle such as an automobile. It is built in as a fuel efficiency calculation function unit 10A, and displays information on the display unit 1A of the navigation device 100.

  In the second embodiment, the case where the predicted fuel consumption calculation function unit 10A is built in the navigation device 100 will be described as an example. However, the second embodiment may be a device that is mounted or brought into a vehicle such as an automobile and includes the display unit 1A. For example, the navigation device 100 is not limited to other devices.

  Although not shown, the navigation device 100 includes a navigation unit having a normal navigation function. In addition, an input unit that receives manual input from a user, and an audio output unit that outputs audio from a speaker or the like. May also be provided. The input unit may be a hardware switch, key, button, touch sensor integrated with the display unit 1A, or a remote controller installed on a vehicle handle or the like. May be.

  Even with this configuration, the calculation function performed in the in-vehicle information device 10 in the first embodiment is incorporated as a program in the navigation device 100, so that the predicted fuel consumption calculation function unit 10A is internally the same. Since the process is performed and output to the display unit 1A, the same effect as in the first embodiment can be obtained.

  In the first and second embodiments, a gasoline car is assumed as the vehicle, but the present invention can be similarly applied to an electric vehicle. In the case of an electric vehicle, the catalog fuel consumption value is often described in a range (for example, 200 km) that can be traveled by one full charge, but from the installed battery capacity (for example, 20 kWh). AC power consumption rate (for example, 100 Wh / km) indicating the battery capacity [Wh] required for traveling 1 km, and power consumption (for example, 10 km / kWh) indicating the range (distance) that can be traveled per kWh Since it can be calculated, for example, the electricity cost may be represented, and the fuel cost (travel distance per unit energy) data stored in the information storage unit 12 may be calculated and stored.

When applied to an electric vehicle, a switch unit (not shown) for recognizing the ON / OFF state of the electric vehicle may be employed instead of the gasoline unit 3.
Thus, when applied to an electric vehicle, since the electric station is not installed as much as the gas station, the predicted energy consumption information is likely to play a more important role for the driver, and this will be used for the user. Presenting is very effective.

  In the present invention, within the scope of the invention, any combination of the embodiments, or any modification of any component in each embodiment, or omission of any component in each embodiment is possible. .

  DESCRIPTION OF SYMBOLS 1 Display apparatus, 1A display part, 2 Meter unit, 3 Engine unit, 4 Weight sensor, 5 Face authentication unit, 6 Seat unit, 7 Camera unit, 8 Seat belt sensor, 10 Vehicle-mounted information apparatus, 10A Predictive fuel consumption calculation function part, DESCRIPTION OF SYMBOLS 11 Information acquisition part, 12 Information storage part, 13 Calculation part, 14 Display control part, 20 Predicted energy consumption information (predicted fuel consumption information), 100 Navigation apparatus.

Claims (3)

In an in-vehicle information device brought into or mounted on a vehicle,
An information acquisition unit for acquiring a travel distance of the vehicle, a remaining energy amount due to the travel, and the number of passengers or the loaded weight of the vehicle in the travel;
A calculation unit that calculates a travel distance per unit energy of the vehicle based on the travel distance acquired by the information acquisition unit and the remaining energy;
An information storage unit that stores the travel distance per unit energy of the vehicle calculated by the calculation unit in association with at least one of the number of passengers or the loading weight acquired by the information acquisition unit;
A display control unit for receiving various instructions on the display device in response to an instruction from the arithmetic unit;
The calculation unit acquires all travel distances per unit energy corresponding to the number of passengers or loaded weight acquired by the information acquisition unit from the information storage unit, and calculates an average value of travel distances per unit energy acquired. Based on the average value of the travel distance per unit energy calculated and the remaining energy amount acquired by the information acquisition unit, the predicted consumption amount of energy in the vehicle or the range within which the predicted consumption amount can be traveled is indicated. An in-vehicle information device characterized by calculating predicted energy consumption information and instructing the display control unit to display the calculated predicted energy consumption information on the display device.   The in-vehicle information device according to claim 1, wherein the calculation unit calculates the predicted energy consumption information each time the number of passengers or the loaded weight acquired by the information acquisition unit changes. In an apparatus brought into or mounted on a vehicle, a predicted energy consumption information display method for displaying predicted energy consumption information indicating a predicted consumption amount of energy in the vehicle or a range in which the vehicle can travel with the predicted consumption amount on a display unit,
An information acquisition unit acquiring a travel distance of the vehicle, an energy remaining amount due to the travel, and the number of passengers or the loaded weight of the vehicle in the travel;
A calculation unit calculating a travel distance per unit energy of the vehicle based on the travel distance acquired by the information acquisition unit and the remaining energy;
The calculation unit acquires the number of passengers acquired by the information acquisition unit from the information storage unit that stores the travel distance per unit energy of the vehicle in association with at least one of the number of passengers or the loaded weight of the vehicle. All the travel distance per unit energy corresponding to the loaded weight is read and acquired, the average value of the travel distance per unit energy acquired is calculated, and the average value of the travel distance per unit energy and the information acquisition unit Calculating the predicted energy consumption information based on the acquired remaining energy; and
A step of instructing the display unit to display the calculated predicted energy consumption information on the display unit; and a method of displaying the predicted energy consumption information.

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