JP5635632B2 - Calculation device, calculation method, calculation program, and recording medium - Google Patents

Description

  The present invention relates to a calculation device, a calculation method, a calculation program, and a recording medium for calculating a correction value for calculating the energy consumption amount of a mobile object. However, the use of the present invention is not limited to the calculation device, the calculation method, the calculation program, and the recording medium.

  2. Description of the Related Art Conventionally, an estimated consumption calculation device that calculates an estimated consumption of energy consumed when a moving body moves in a predetermined section is known (for example, see Patent Document 1 below). In the following Patent Document 1, based on the following equation (1), the amount of energy per unit time consumed when the moving body moves in a predetermined section is calculated, and the time required to move in the predetermined section is calculated. By accumulating, the estimated consumption of the moving body in a predetermined section is calculated.

  In such an estimated consumption calculating apparatus, a method for correcting a deviation from the actually measured consumption of energy actually consumed by the mobile body has been proposed. In the following Patent Document 1, for example, for each road type such as a general road or a highway / toll road, a correction value for correcting a deviation between the estimated consumption amount and the actually measured consumption amount is input to the user.

  FIG. 10 is an explanatory diagram showing a display screen of a conventional estimated consumption calculating device. The display screen 1000 of the estimated consumption calculation device inputs a total fuel consumption display unit 1010 for displaying the total fuel consumption, an average fuel consumption display unit (eco status) 1020 for displaying the average fuel consumption, and a correction amount for correcting the total fuel consumption. The input unit 1030 is provided. The total fuel consumption is, for example, the total estimated consumption required for movement of the travel section. The average fuel consumption is, for example, an average of estimated consumption calculated for each road type in the travel section.

  Specifically, the total fuel consumption display unit 1010 displays the estimated consumption calculated using the above equation (1) as the total fuel consumption. The estimated consumption is corrected each time a correction amount is input via the input unit 1030. The average fuel consumption display unit 1020 displays the average fuel consumption 1021 before the change and the average fuel consumption 1022 after the change calculated based on the total fuel consumption. The average fuel consumption display unit 1020 displays the average fuel consumption 1021 and 1022 for each road type such as for general roads and for highways / toll roads.

  The input unit 1030 includes an operation key 1031 that receives a user operation for increasing (+) or decreasing (−) the correction amount, and a correction amount display unit 1032 that displays the correction amount. The input unit 1030 is realized by a touch panel method. When the correction amount is changed by +1 or −1, the average fuel consumption increases or decreases by about 1%.

International Publication No. 2010/113246 Pamphlet

  However, in the technique shown in Patent Document 1 described above, the correction value is input by the user as described above. Specifically, for example, the user calculates the fuel efficiency based on the travel distance from the previous refueling and the current fuel amount, and the calculated fuel efficiency does not match the total fuel consumption displayed on the total fuel consumption display unit 1010. In addition, the correction amount is manually changed by operating the input unit 1030. For this reason, there is no clear standard indicating how to correct the deviation of the estimated consumption from the actual consumption, and it is left to the user's judgment. As described above, when the estimated consumption is calculated based on the correction value changed by the user's judgment, the estimated consumption can not be calculated accurately and the user operation becomes troublesome as an example. .

  In order to solve the above-described problems and achieve the object, the calculation apparatus according to the invention of claim 1 estimates the energy consumed when the moving body moves in a predetermined section based on movement information of the moving body. The consumption is calculated for each factor that the mobile body consumes the energy. As the estimated consumption for each factor, the standby consumption that the mobile body consumes during standby, and the mobile body that consumes during acceleration. Estimated consumption calculation means for calculating the acceleration consumption to be performed and the travel consumption to be consumed when the mobile body travels at a constant speed, and the actual consumption when the mobile body moves in the predetermined section As the correction amount for each factor when the estimated consumption calculation means calculates the estimated consumption based on the acquisition means for acquiring the measured consumption of the measured energy and the measured consumption and the estimated consumption , A correction amount calculating means for calculating a correction amount for the standby consumption amount, a correction amount for the acceleration consumption amount, and a correction amount for the travel consumption amount, and the predetermined section for each of a plurality of speed bands of the moving body. Storage means for storing a ratio obtained by dividing a required time or a required distance required for the movement of the vehicle, and the correction amount calculating means is configured to store the standby consumption every time a user inputs a refueling amount as the actually measured consumption amount. A first correction value for correcting the standby consumption amount and the acceleration consumption amount so as to eliminate the difference between the amount, the sum of the acceleration consumption amount and the travel consumption amount, and the oil supply amount; and the travel consumption amount And a second correction value different from the first correction value is calculated, and the correction amount calculation means sets the correction amount of the standby consumption amount and the correction amount of the acceleration consumption amount to a low speed band. To calculate the above-mentioned travel consumption amount. An amount is calculated using the difference, the correction amount of the standby consumption amount, and the correction amount of the acceleration consumption amount, and the correction amount calculation means calculates the first correction value as the correction amount of the standby consumption amount and the correction amount. An acceleration consumption correction amount is calculated, the second correction value is calculated using the travel consumption correction amount, and the estimated consumption calculation means is configured to calculate the first correction value and the second correction value. The estimated consumption is calculated using a value.

  A calculation method according to the invention of claim 4 is a calculation method in a calculation device for calculating a correction amount when calculating an estimated consumption amount of energy consumed by the mobile body, based on movement information of the mobile body. Calculating the estimated consumption of energy consumed when the mobile body moves in a predetermined section for each factor that the mobile body consumes the energy, and as the estimated consumption amount for each factor, Estimated consumption calculation for calculating the standby consumption consumed by the mobile body during standby, the acceleration consumption consumed by the mobile body during acceleration, and the travel consumption consumed when the mobile body travels at a constant speed, respectively. The estimation based on a step, an acquisition step of acquiring an actual consumption amount of energy actually consumed when the mobile body moves in the predetermined section, and the actual consumption amount and the estimated consumption amount As the correction amount for each factor when the estimated consumption amount is calculated by the cost amount calculation step, the correction amount for the standby consumption amount, the correction amount for the acceleration consumption amount, and the correction amount for the travel consumption amount A correction amount calculating step for calculating, and a storage step for storing a ratio obtained by dividing a required time or a required distance required for movement of the predetermined section for each of a plurality of speed bands of the moving body, and the correction amount The calculation step is such that every time a refueling amount is input by the user as the actually measured consumption amount, the difference between the standby consumption amount, the sum of the acceleration consumption amount and the travel consumption amount, and the refueling amount is eliminated. A first correction value that corrects the standby consumption amount and the acceleration consumption amount, a second correction value that corrects the travel consumption amount, and is different from the first correction value, and the correction amount calculation step includes: Correction amount of the standby consumption amount, and A correction amount for the fast consumption amount is calculated using a ratio of a low speed band, and the correction amount for the travel consumption amount is calculated using the difference, the correction amount for the standby consumption amount, and the correction amount for the acceleration consumption amount. The correction amount calculating step calculates the first correction value using the correction amount for the standby consumption amount and the correction amount for the acceleration consumption amount, and calculates the second correction value as the travel consumption amount. The estimated consumption amount calculating step calculates the estimated consumption amount using the first correction value and the second correction value.

  According to a fifth aspect of the present invention, a calculation program causes a computer to execute the calculation method according to the fourth aspect.

  A recording medium according to a sixth aspect of the invention is characterized in that the calculation program according to the fifth aspect is recorded in a computer-readable state.

FIG. 1 is a block diagram of a functional configuration of the calculation apparatus according to the embodiment. FIG. 2 is a flowchart illustrating a procedure of correction value calculation processing by the calculation device. FIG. 3 is a block diagram illustrating a hardware configuration of the navigation apparatus. FIG. 4 is an explanatory diagram schematically illustrating a speed band of the vehicle according to the embodiment. FIG. 5 is an explanatory diagram schematically illustrating another example of the speed band of the vehicle according to the embodiment. FIG. 6 is a flowchart showing a procedure of correction coefficient calculation processing by the navigation device. FIG. 7 is a flowchart showing the procedure of weight change processing by the navigation device. FIG. 8 is a flowchart illustrating a procedure of another example of the weight change process by the navigation device. FIG. 9 is an explanatory diagram illustrating a display screen of the calculation apparatus according to the embodiment. FIG. 10 is an explanatory diagram showing a display screen of a conventional estimated consumption calculating device.

  Exemplary embodiments of a calculation device, a calculation method, a calculation program, and a recording medium according to the present invention will be described below in detail with reference to the accompanying drawings.

(Embodiment)
FIG. 1 is a block diagram of a functional configuration of the calculation apparatus according to the embodiment. The calculation apparatus 100 according to the embodiment automatically corrects a deviation from the actually measured consumption of energy actually consumed by the mobile body, and calculates the estimated consumption of energy consumed by the mobile body. The calculation device 100 includes an input unit 101, an estimated consumption calculation unit 102, an acquisition unit 103, a storage unit 104, and a correction amount calculation unit 105.

  Here, the energy is, for example, energy based on electricity in the case of EV cars, HV cars, PHV cars, etc. (hereinafter simply referred to as “EV cars”). The energy is energy based on, for example, gasoline, light oil, gas, or the like in the case of a gasoline vehicle, a diesel vehicle, or the like (hereinafter simply referred to as “gasoline vehicle”).

  The input unit 101 receives an input of the amount of energy supplied to the moving body (hereinafter referred to as “energy supply amount”). Specifically, the input unit 101 accepts a user's manual input via the display unit 110 adopting a touch panel method, for example. That is, the user can input the amount of energy supply using the input unit 101 when supplying energy to the moving body.

  The estimated consumption calculation unit 102 calculates an estimated consumption of energy consumed when the moving body moves in a predetermined section based on the movement information of the moving body. The movement information is information that can be measured when the moving body travels, such as the speed, acceleration, and inclination information of the moving body. The predetermined section is the total of all sections in which the moving body has moved from the time of energy supply to the time of the next energy supply. That is, the section in which the moving body can move with the amount of energy supply for one time is the maximum predetermined section. In addition, the predetermined section may be a section in which the moving body moves from when the driving source of the moving body moves to when it stops.

  In addition, the estimated consumption calculation unit 102 calculates the estimated consumption for each factor that the mobile body consumes energy (hereinafter, simply referred to as “by factor”). Specifically, the estimated consumption calculation unit 102 calculates, as the estimated consumption calculated for each factor, the standby consumption consumed by the moving object during standby, the accelerated consumption consumed by the moving object during acceleration, and the moving object is constant. The travel consumption consumed when traveling at speed is calculated. Here, the time of acceleration of the mobile body includes the time of deceleration of the mobile body in addition to the time of acceleration of the mobile body.

  The standby consumption is an amount of energy consumed when the moving body is stopped in a state where the drive source is moved. When the moving body is stopped when the drive source is movable, the engine is idled at a low speed to such an extent that no load is applied to the engine of the moving body. Specifically, the stop time of the moving body in a state where the drive source is movable is an idling time.

  Specifically, the standby consumption is, for example, the amount of energy when the vehicle is stopped with the engine running or when it is stopped by a signal or the like. That is, the standby consumption amount is the amount of energy consumed due to a factor not related to the traveling of the moving body. More specifically, the standby consumption amount is an energy amount by an air conditioner or an audio provided in the moving body, and an energy amount consumed by idling in a gasoline vehicle or the like.

  The acceleration consumption is information related to energy consumed during acceleration / deceleration of the moving body. The time of acceleration / deceleration of the moving body is a traveling state in which the speed of the moving body changes with time. Specifically, the time of acceleration / deceleration of the moving body is a traveling state in which the speed of the moving body changes within a predetermined time.

  The travel consumption is the amount of energy consumed by the resistance generated when the mobile body travels at a constant speed. The traveling at a constant speed of the moving body is a traveling state where the speed of the moving body is constant within a predetermined time. The resistance generated when the mobile body travels is a factor that changes the travel state of the mobile body when the mobile body travels. Specifically, the resistance generated when the mobile body travels is resistance generated in the mobile body due to weather conditions, road conditions, vehicle conditions, and the like.

  In addition, the estimated consumption calculation unit 102 calculates an estimated consumption by correcting a deviation from the actual consumption based on the correction value calculated by the correction amount calculation unit 105. Specifically, based on the correction value calculated for each factor by the correction amount calculation unit 105, the estimated consumption calculation unit 102 calculates an estimated consumption amount that corrects the deviation from the actually measured consumption amount for each factor. And the estimated consumption calculation part 102 calculates the estimated consumption in a predetermined area by totaling the estimated consumption calculated according to a factor.

  The acquisition unit 103 acquires an actual measured consumption amount of energy actually consumed when the moving body moves in a predetermined section. Specifically, the acquisition unit 103 acquires the energy supply amount input via the input unit 101. The energy replenishment amount obtained through the input unit 101 is the amount of energy consumed since the previous energy replenishment, that is, the actually measured consumption amount of the mobile body.

  Moreover, the acquisition part 103 acquires the movement information of a moving body. Specifically, for example, the acquisition unit 103 acquires information about the speed using a speed sensor and an acceleration sensor, and information about the inclination using a tilt sensor. The information regarding speed is the speed and acceleration of the moving body.

  The storage unit 104 stores, for each of a plurality of speed bands of the moving body, a ratio (hereinafter referred to as “speed band ratio”) obtained by dividing a required time or a required distance required for movement in a predetermined section. Specifically, for example, when the speed band is divided into two stages of the first and second speed bands, the mobile body takes 100 hours to move in a predetermined section, and the mobile body takes the first time for 60 hours. When moving in the speed band, the storage unit 104 stores the ratio of the first speed band as 60, and stores the ratio of the second speed band as 40 (= 100-60).

  That is, when the ratio of the first speed band is 60, the time required for the moving body to move at a speed less than 50 km / h when the first speed band is less than 50 km / h and the second speed band is 50 km / h or more. , Which means 60% of the total. The velocity band of the moving body may be divided into three or more stages.

  In addition, the storage unit 104 stores a threshold value for dividing the speed band of the moving object. Specifically, for example, when the speed band is divided into two stages, the storage unit 104 stores the speed at the boundary between the first and second speed bands as a threshold value for dividing the speed band of the moving object. Specifically, when the first speed band is set to less than 50 km / h and the second speed band is set to 50 km / h or more, the storage unit 104 stores 50 km / h as a threshold for dividing the speed band of the moving body. . The storage unit 104 may store the first and second speed bands themselves.

  The speed band of the moving body may be set by the user. When the user sets the speed band of the moving object, the storage unit 104 stores the speed band of the moving object input via the input unit 101, for example. Moreover, the memory | storage part 104 may memorize | store the threshold value for dividing the acceleration of a moving body into a some zone | band.

  In addition, the storage unit 104 stores information serving as a weight for correcting a deviation between the estimated consumption amount and the actually measured consumption amount. Specifically, the storage unit 104 stores, for example, information that is weighted when the estimated consumption calculated by the estimated consumption calculation unit 102 is increased or decreased for each factor.

  The weighting information is, for example, a ratio for dividing the difference between the estimated consumption amount and the actually measured consumption amount as a correction amount for correcting the standby consumption amount, the acceleration consumption amount, and the travel consumption amount. Specifically, the initial value of the information to be weighted is, for example, 100%, and the information to be weighted can take a value from 0% to 100%.

  The correction amount calculating unit 105 calculates a correction value when the estimated consumption calculating unit 102 calculates the estimated consumption based on the difference between the actually measured consumption and the estimated consumption and the ratio for each speed band of the moving object. To do. Specifically, the correction amount calculation unit 105 calculates a difference between the actually measured consumption amount and the estimated consumption amount. This difference is a correction amount for correcting the estimated consumption amount. Then, the correction amount calculation unit 105 divides the difference between the actually measured consumption amount and the estimated consumption amount for each factor, and calculates the correction amount for the estimated consumption amount for each factor. Then, the correction amount calculation unit 105 calculates a correction value for each factor based on the calculated correction amount of the estimated consumption amount.

  More specifically, for example, the correction amount calculation unit 105 first calculates a first correction amount for correcting the standby consumption amount and the acceleration consumption amount, and a second correction amount for correcting the travel consumption amount. Then, the correction amount calculation unit 105 corrects the estimated consumption amount for each factor based on the correction amount, and calculates a correction value for each factor based on the estimated consumption amount. At this time, the correction amount calculation unit 105 may separately calculate a correction amount for correcting the standby consumption amount and a correction amount for correcting the acceleration consumption amount. Further, the correction amount calculation unit 105 may further calculate the correction amount using the acceleration of the moving body.

  Further, the correction amount calculation unit 105 may calculate the first correction amount using, for example, the ratio of the low speed band of the moving body in the speed band. The low speed band of the moving body may be, for example, the lowest speed band among a plurality of speed bands, or a speed band other than the highest speed band.

  In addition, when the speed band is divided into three or more stages, the correction amount calculation unit 105 uses the ratio from the lowest speed band to the predetermined speed band among the plurality of speed bands, as a first correction amount. May be calculated. Specifically, the correction amount calculation unit 105 may calculate the first correction amount based on, for example, a ratio of a plurality of speed bands set to be equal to or less than the legal speed of the general road.

  More specifically, the correction amount calculation unit 105 is calculated by the actual consumption (energy supply amount) acquired by the acquisition unit 103 and the estimated consumption calculation unit 102 every time energy is supplied to the moving body. A difference from the estimated consumption is calculated, and a correction amount is calculated based on the difference. Then, the correction amount calculation unit 105 newly calculates a correction value based on the calculated correction amount.

  In addition, the correction amount calculation unit 105 changes the weighting information stored in the storage unit 104 every time energy is supplied to the moving body. Specifically, each time the correction value is calculated, the correction amount calculation unit 105 subtracts the weighting information by a predetermined subtraction value and changes the value to approach 0%. Further, the correction amount calculation unit 105 may add the weighting information with a predetermined addition value based on the difference between the actual consumption amount and the estimated consumption amount, or may subtract with a predetermined subtraction value. .

  Next, correction value calculation processing by the calculation device 100 will be described. FIG. 2 is a flowchart illustrating a procedure of correction value calculation processing by the calculation device. In the flowchart of FIG. 2, the calculation device 100 calculates an estimated consumption per unit time by the estimated consumption calculation unit 102 (step S201). At this time, the calculation apparatus 100 calculates an estimated consumption amount for each factor that the mobile body consumes energy.

  Next, the calculation apparatus 100 determines whether or not energy is supplied to the moving body (step S202), and performs the process of step S201 at a predetermined timing until the energy is supplied to the moving body (step S202: No). Loop). When energy is replenished to the moving body (step S202: Yes), the calculation device 100 acquires the amount of energy replenishment (actual consumption) by the acquisition unit 103 (step S203). At this time, the calculation apparatus 100 integrates the estimated consumption per unit time by the estimated consumption calculation unit 102 and calculates the estimated consumption in a predetermined section.

  Next, the calculation device 100 uses the correction amount calculation unit 105 to calculate the difference between the energy supply amount and the estimated consumption amount in a predetermined section (step S204). Next, the calculation apparatus 100 calculates a correction amount for the estimated consumption amount for each factor (step S205). That is, the calculation device 100 divides the difference between the energy supply amount and the estimated consumption amount by factor based on a plurality of speed bands of the moving body.

  Next, the calculation apparatus 100 uses the correction amount of the estimated consumption calculated for each factor by the correction amount calculation unit 105, and calculates a correction value for the factor when the estimated consumption calculation unit 102 calculates the estimated consumption for each factor. Calculate (step S206). Then, the calculation device 100 stores the correction value in the storage unit 104 (step S207), and ends the processing according to this flowchart.

  As described above, the calculation device 100 according to the embodiment calculates a correction value for calculating the estimated consumption amount based on the energy amount (actual consumption amount) input by the user when the mobile body is replenished with energy. . More specifically, the calculation device 100 calculates a correction value for calculating the estimated consumption based on the difference between the estimated consumption and the actually measured consumption and the rate of the speed band of the moving object. As described above, the calculation device 100 calculates a correction value, which is a clear reference for correcting the deviation of the estimated consumption from the actual consumption, based on the actual energy supply amount, and thus accurately calculates the estimated consumption. can do. Further, since the user only inputs the actual energy replenishment amount replenished to the moving body, it is not necessary to calculate the estimated consumption amount by himself and the correction amount for correcting the estimated consumption amount can be determined by the user himself / herself. You are freed from the cumbersome operation of typing.

  In addition, the calculation device 100 divides the velocity band of the moving body into three or more stages and calculates a correction value for calculating the estimated consumption. For this reason, according to the calculation apparatus 100, since the condition setting for calculating the correction value can be performed more finely, the deviation between the estimated consumption amount and the actually measured consumption amount can be further reduced.

  Further, the calculation device 100 further calculates a correction value for calculating the estimated consumption based on the acceleration of the moving object. For this reason, according to the calculation apparatus 100, since a correction value can be calculated based on the acceleration and deceleration states of the user, the accuracy of calculating the estimated consumption can be improved.

  Further, every time the correction device calculates the correction value, the calculation device 100 subtracts the information to be weighted by a predetermined subtraction value and changes the value to approach 0%. Therefore, according to the calculation device 100, every time energy is supplied to the moving body, the correction value calculated by the calculation device 100 is converged to a value that brings the difference between the estimated consumption amount and the energy supply amount close to zero. be able to.

  Examples of the present invention will be described below. In the present embodiment, an example in which the present invention is applied will be described using the navigation device 300 mounted on a vehicle as the calculation device 100.

(Hardware configuration of navigation device 300)
A hardware configuration of the navigation device 300 will be described. FIG. 3 is a block diagram illustrating a hardware configuration of the navigation apparatus. In FIG. 3, a navigation device 300 includes a CPU 301, ROM 302, RAM 303, magnetic disk drive 304, magnetic disk 305, optical disk drive 306, optical disk 307, audio I / F (interface) 308, microphone 309, speaker 310, input device 311, A video I / F 312, a display 313, a camera 314, a communication I / F 315, a GPS unit 316, and various sensors 317 are provided. Each component 301 to 317 is connected by a bus 320.

  First, the CPU 301 governs overall control of the navigation device 300. The ROM 302 records programs such as a boot program and a data update program. The RAM 303 is used as a work area for the CPU 301. That is, the CPU 301 controls the entire navigation device 300 by executing various programs recorded in the ROM 302 while using the RAM 303 as a work area.

  The magnetic disk drive 304 controls the reading / writing of the data with respect to the magnetic disk 305 according to control of CPU301. The magnetic disk 305 records data written under the control of the magnetic disk drive 304. As the magnetic disk 305, for example, an HD (hard disk) or an FD (flexible disk) can be used.

  The optical disk drive 306 controls reading / writing of data with respect to the optical disk 307 according to the control of the CPU 301. The optical disk 307 is a detachable recording medium from which data is read according to the control of the optical disk drive 306. As the optical disc 307, a writable recording medium can be used. In addition to the optical disk 307, an MO, a memory card, or the like can be used as a removable recording medium.

  Examples of information recorded on the magnetic disk 305 and the optical disk 307 include map data. Map data is used for route search processing and route guidance processing in car navigation systems. Background data that represents features (features) such as buildings, rivers, and the ground surface, and road shape data that represents road shapes with links and nodes. Etc.

  The audio I / F 308 is connected to a microphone 309 for audio input and a speaker 310 for audio output. The sound received by the microphone 309 is A / D converted in the sound I / F 308. For example, the microphone 309 is installed in a dashboard portion of a vehicle, and the number thereof may be one or more. From the speaker 310, a sound obtained by D / A converting a predetermined sound signal in the sound I / F 308 is output.

  Examples of the input device 311 include a remote controller having a plurality of keys for inputting characters, numerical values, various instructions, and the like, a keyboard, and a touch panel. The input device 311 may be realized by any one form of a remote control, a keyboard, and a touch panel, but can also be realized by a plurality of forms.

  The video I / F 312 is connected to the display 313. Specifically, the video I / F 312 is output from, for example, a graphic controller that controls the entire display 313, a buffer memory such as a VRAM (Video RAM) that temporarily records image information that can be displayed immediately, and a graphic controller. And a control IC for controlling the display 313 based on the image data to be processed.

  The display 313 displays icons, cursors, menus, windows, or various data such as characters and images. As the display 313, for example, a TFT liquid crystal display, an organic EL display, or the like can be used.

  The camera 314 captures images inside or outside the vehicle. The image may be either a still image or a moving image. For example, the outside of the vehicle is photographed by the camera 314, and the photographed image is analyzed by the CPU 301, or a recording medium such as the magnetic disk 305 or the optical disk 307 via the image I / F 312. Or output to

  The communication I / F 315 is connected to a network via a wire or wirelessly and functions as an interface between the navigation device 300 and the CPU 301. Communication networks functioning as networks include in-vehicle communication networks such as LIN (Local Interconnect Network), public line networks and mobile phone networks, DSRC (Dedicated Short Range Communication), LAN and WAN. The communication I / F 315 is, for example, a public line connection module, an ETC (non-stop automatic fee payment system) unit, an FM tuner, a VICS (Vehicle Information and Communication System) / beacon receiver, or the like.

  The GPS unit 316 receives radio waves from GPS satellites and outputs information indicating the current position of the vehicle. The output information of the GPS unit 316 is used when the CPU 301 calculates the current position of the vehicle together with output values of various sensors 317 described later. The information indicating the current position is information for specifying one point on the map data, such as latitude / longitude and altitude.

  The various sensors 317 output information for determining the position and behavior of the vehicle, such as a vehicle speed sensor, an acceleration sensor, and an angular velocity sensor. The output values of the various sensors 317 are used by the CPU 301 to calculate the current position of the vehicle and the amount of change in speed and direction.

  The input unit 101, estimated consumption calculation unit 102, acquisition unit 103, storage unit 104, and correction amount calculation unit 105 of the calculation device 100 illustrated in FIG. 1 are the ROM 302, RAM 303, magnetic disk 305, and optical disk in the navigation device 300 described above. The CPU 301 executes a predetermined program using the program and data recorded in 307 and the like, and realizes its function by controlling each unit in the navigation device 300.

(Correction coefficient (correction value) calculation formula in the navigation apparatus 300, part 1)
Next, correction coefficient calculation processing by the navigation device 300 will be described. Here, for example, a correction coefficient calculation process when calculating the fuel consumption of a gasoline vehicle will be described as an example. Further, in order to clarify the calculation processing according to the present invention, the unit of fuel consumption is indicated by, for example, liter (L).

  The navigation device 300 according to the present embodiment calculates an instantaneous fuel consumption amount (fuel consumption amount per unit time: estimated consumption amount) while the vehicle on which the device is mounted is traveling, and displays the calculated fuel consumption amount on the display 313. Further, the navigation device 300 automatically corrects the deviation from the actual fuel consumption (actual consumption) based on, for example, the amount of fuel input by the user. Thus, according to the navigation apparatus 300, the user can know the fuel consumption of a vehicle, without requiring a special apparatus and complicated work.

  Specifically, the navigation apparatus 300 calculates the instantaneous fuel consumption amount Fc (x) of the vehicle using the following equation (2). The instantaneous fuel consumption amount is a fuel consumption amount per unit time. Then, the navigation apparatus 300 integrates the instantaneous fuel consumption amount Fc (x) with the time required for movement in a predetermined section, and calculates the total fuel consumption amount ΣFc in the predetermined section.

  In the above formula (2), time (h) and second (s) are mixedly used as a unit representing time, but this employs speed (km / h) as a unit of speed, and fuel. This is because the second (s) is adopted as the unit time for calculating the consumption. When it is desired to align these units, calculation may be appropriately performed on each numerical value. In addition, vehicle movement information such as speed x and gradient θ is acquired via various sensors 317.

  The equation (2) is provided with a correction coefficient (correction value) for automatically correcting a deviation from the actual fuel consumption (actual consumption). Specifically, the first term on the right side of the above equation (2) includes a first correction for correcting the fuel consumption (standby consumption) when the vehicle is on standby and the fuel consumption (acceleration consumption) when the vehicle is accelerating. A correction coefficient H1 is provided. The first correction coefficient H1 is, for example, a coefficient that corrects the fuel consumption consumed when traveling on a general road. The second term on the right side of the above equation (2) is provided with a second correction coefficient H2 for correcting the fuel consumption amount (travel consumption amount) when the vehicle travels at a constant speed. The second correction coefficient H2 is a coefficient that corrects the amount of fuel consumed when moving on an expressway or a toll road, for example.

  In addition, the navigation apparatus 300 newly calculates a correction coefficient so that the total fuel consumption amount ΣFc in the entire traveling section (predetermined section) matches the fuel amount input via the input device 311. That is, the navigation device 300 newly calculates a correction coefficient every time the user inputs a fuel amount. Thereby, the navigation apparatus 300 can calculate the fuel consumption amount ΣFc more accurately in the next fuel estimation amount calculation process.

  Specifically, the navigation device 300 calculates the correction coefficient as follows. In the above equation (2), if the standby consumption, acceleration consumption, and travel consumption that are not corrected are ΣK1, ΣK2, and ΣK3, respectively, the corrected fuel consumption ΣFc is expressed by the following equation (3). .

  In the above equation (3), in order to make the fuel consumption amount ΣFc and the fuel supply amount coincide with each other, the sum of the standby consumption amount ΣK1, the acceleration consumption amount ΣK2 and the travel consumption amount ΣK3 that is not corrected (hereinafter referred to as “fuel consumption amount”). The fuel consumption amount ΣFc_org may be corrected so that the difference ΔFc between the ΣFc_org ”and the fuel supply amount is eliminated. That is, the first and second correction coefficients H1 and H2 are newly calculated so that the difference ΔFc between the fuel consumption amount ΣFc_org and the fuel supply amount disappears.

  Specifically, the navigation apparatus 300 divides the difference ΔFc between the fuel consumption amount ΣFc_org and the fuel supply amount into respective correction amounts for correcting the standby consumption amount ΣK1, the acceleration consumption amount ΣK2, and the travel consumption amount ΣK3. More specifically, the navigation device 300 calculates a standby consumption correction amount ΔK1, an acceleration consumption correction amount ΔK2, and a travel consumption correction amount ΔK3 based on the following equation (4), and sums them up: As a result, the fuel consumption amount ΣFc_org is calculated.

  In the above equation (4), the speed band of the vehicle is divided into two stages of first and second speed bands. The first speed band is a speed band during standby and acceleration of the vehicle, and the second speed band is a speed band when the vehicle is traveling at a constant speed. The ratio A% of the first speed band is the ratio of the total travel time of the vehicle (the time required for moving in a predetermined section) to the time when the vehicle traveled in the first speed band. For this reason, the ratio of the second speed band is (100-A)%.

  Specifically, for example, when the vehicle speed band is divided into two stages of the first and second speed bands, the first speed band may be less than 50 km / h and the second speed band may be 50 km / h or more. If the total travel time of the vehicle is 100 hours and the vehicle travels in the first speed band for 60 hours, the ratio A of the first speed band is 60% and the ratio of the second speed band is 40%. .

  The weighting (information to be weighted) α is a term (standby consumption ΣK1) corrected by the first correction coefficient H1 in the above equation (3) when it is assumed that the vehicle travels only in the first speed band (100%). And the acceleration consumption amount ΣK2) is a ratio indicating how much correction amount of the difference ΔFc between the fuel consumption amount ΣFc_org and the fuel supply amount is assigned.

  The navigation device 300 acquires the first speed band ratio A and the weighting α from, for example, a storage device (the magnetic disk 305 or the optical disk 307). The initial value of the weighting α is 100%. Each time the navigation device 300 newly calculates a correction coefficient, the navigation device 300 subtracts the weighting α, changes it to approach 0%, and stores it in the storage device. By changing the weighting α in this way, the first and second correction coefficients H1 and H2 converge to a value that makes the difference ΔFc = 0 between the fuel consumption amount ΣFc_org and the fuel supply amount.

  The corrected fuel consumption amount ΣFc is expressed by the following equation (5). Therefore, the right side of the above equation (3) is equal to the right side of the following equation (5), and the first term on the right side of the above equation (3) corresponds to the sum of the first and second terms on the right side of the above equation (5). The second term on the right side of equation (3) corresponds to the third term on the right side of equation (5). Therefore, the first and second correction coefficients H1 and H2 are expressed by the following equation (6).

  Next, a specific example of calculating the first and second correction coefficients H1 and H2 will be described. Here, for example, the first speed band is set to less than 50 km / h, and the second speed band is set to 50 km / h or more. The ratio A of the first speed band is 60%, and the ratio of the second speed band is 40%. The initial values of the first and second correction coefficients H1 and H2 are 1 and 1.3, respectively. The initial values of the first and second correction coefficients H1 and H2 are the values of the first and second correction coefficients H1 and H2 calculated during the previous calculation process. The amount of refueling input by the user is 36.6L.

  First, the navigation apparatus 300 calculates the fuel consumption amount ΣFc using the above equation (2). At this time, the fuel consumption amount ΣFc is calculated based on the first and second correction coefficients H1 and H2 calculated during the previous calculation process. Hereinafter, a value calculated using the first and second correction coefficients H1 and H2 at the time of the previous calculation process is a value before correction. The navigation device 300 calculates the fuel consumption ΣFc before correction for each factor. Here, for example, it is assumed that the fuel consumption before correction ΣFc = 37L, the standby consumption before correction = 10L, the acceleration consumption before correction = 20L, and the travel consumption before correction = 7L.

  Next, the navigation apparatus 300 calculates the standby consumption ΣK1, the acceleration consumption ΣK2, and the travel consumption ΣK3 that are not corrected using the above equation (3), and the correction is not applied from the sum of these. A fuel consumption amount ΣFc_org is calculated. Specifically, standby consumption ΣK1 = standby consumption before correction / first correction coefficient H1 before correction. Acceleration consumption ΣK2 = acceleration consumption before correction / first correction coefficient H1 before correction. Travel consumption ΣK3 = travel consumption before correction / second correction coefficient H2 before correction. That is, the standby consumption amount ΣK1 = 10L, the acceleration consumption amount ΣK2 = 20L, the travel consumption amount ΣK3 = 5.384615L, and the fuel consumption amount ΣFc_org = 35.38462L.

  Next, the navigation apparatus 300 calculates a difference ΔFc between the fuel consumption amount ΣFc_org and the fuel supply amount. Specifically, the difference ΔFc between the fuel consumption amount ΣFc_org and the fuel supply amount is 35.38462-36.6 = 1.215385L.

  Next, the navigation apparatus 300 uses the above equation (4) to calculate the standby consumption correction amount ΔK1, the acceleration consumption correction amount ΔK2, and the travel consumption amount correction amount according to the values calculated by the above equation (3). ΔK3 is calculated. Specifically, the standby consumption correction amount ΔK1 = 0.145846L, the acceleration consumption correction amount ΔK2 = 0.2691692L, and the travel consumption correction amount ΔK3 = 0.778678L.

  Next, the navigation apparatus 300 recalculates the standby consumption amount ΣK1, the acceleration consumption amount ΣK2, and the travel consumption amount ΣK3 using the above equation (5). Hereinafter, the value calculated at the time of recalculation is assumed to be a value after correction. Specifically, the corrected standby consumption ΣK1 = the standby consumption before correction + the standby consumption correction amount ΔK1. Accelerated consumption after correction ΣK2 = Acceleration consumption before correction + Acceleration consumption correction amount ΔK2. Travel consumption after correction ΣK3 = travel consumption before correction + travel consumption correction amount ΔK3. That is, the corrected standby consumption amount ΣK1 = 10.14585L, the corrected acceleration consumption amount ΣK2 = 20.29169L, and the corrected travel consumption amount ΣK3 = 6.162462L.

  Next, the navigation apparatus 300 recalculates the first and second correction coefficients H1 and H2 using the above equation (6). Specifically, the corrected first correction coefficient H1 = 1.014585 and the corrected second correction coefficient H2 = 1.144457. Thus, the first and second correction coefficients H1 and H2 used for the next fuel consumption calculation process are calculated. Next, the navigation device 300 stores the corrected first and second correction coefficients H1 and H2 in the storage device, and ends the calculation process.

(Correction coefficient calculation formula in navigation device 300, part 2)
Next, another example of calculation processing by the navigation device 300 will be described. FIG. 4 is an explanatory diagram schematically illustrating a speed band of the vehicle according to the embodiment. The speed band of the vehicle may be divided into three stages of first to third speed bands. As shown in FIG. 4, the first and second speed bands 401 and 402 are lower speed bands than the third speed band 403. Specifically, the first and second speed bands 401 and 402 are speed bands when the vehicle is on standby and during acceleration. The third speed band 403 is a speed band when the vehicle is traveling at a constant speed.

  In the correction coefficient calculation formula / Part 2, the navigation apparatus 300 calculates the standby consumption correction amount ΔK1, the acceleration consumption correction amount ΔK2, and the travel consumption correction amount ΔK3 based on the following equation (7). In addition, the navigation device 300 calculates the first and second correction coefficients H1 and H2 based on the following equation (8). The process from the calculation of the instantaneous fuel consumption amount Fc (x) to the calculation of the correction coefficient is the same as the correction coefficient calculation formula, part 1.

  In the above equation (7), the ratio A% of the first speed band and the ratio B% of the second speed band are the second of the total travel time of the vehicle (the time required for movement in a predetermined section). This is the percentage of time spent traveling in the speed band. For this reason, the ratio of the third speed band is (100-A-B)%.

  Specifically, for example, when the vehicle speed band is divided into three stages of the first to third speed bands, the first speed band is less than 30 km / h, the second speed band is 30 km / h or more and less than 80 km / h, The three speed band may be 80 km / h or more. Assuming that the total travel time of the vehicle is 100 hours, 10 hours of which travels in the first speed band and 40 hours travels in the second speed band, the ratio A of the first speed band is 10%. Thus, the ratio of the second speed band is 40%, and the ratio B of the third speed band is 50%.

  The weight β is a term that is corrected by the first correction coefficient H1 and the second correction coefficient H2 on the right side of the equation (3) when it is assumed that the vehicle travels only in the second speed band (100%). This is a ratio indicating how much correction amount of the difference ΔFc between the amount ΣFc_org and the oil supply amount is assigned.

  The initial value of the weighting β is 100%. Further, the weighting β is changed in the same manner as the weighting α. Further, the weighting β starts to be changed after the weighting α becomes 0%. By changing the weighting β in this way, the first and second correction coefficients H1 and H2 converge to a value that brings the difference ΔFc between the fuel consumption amount ΣFc_org and the fuel supply amount close to zero.

  Here, it is assumed that weighting α = 0% and weighting β = 100%, and weighting is performed with the first correction coefficient H1: second correction coefficient H2 = 1: 1. Specifically, when the vehicle travels only in the second speed band (100%) and the weighting β is 100%, (ΔK1 + ΔK2): ΔK3 = 1: 1.

  Next, a specific example of calculating the first and second correction coefficients H1 and H2 will be described. Here, for example, the first speed band is less than 30 km / h, the second speed band is not less than 30 km / h and less than 80 km / h, and the third speed band is not less than 80 km / h. The ratio A of the first speed band is 10%, the ratio B of the second speed band is 40%, and the ratio of the third speed band is 50%. The initial values of the first and second correction coefficients H1 and H2 are 1.3 and 1, respectively. The amount of refueling input by the user is 40L.

  First, the navigation apparatus 300 uses the equation (2) as in the correction coefficient calculation formula (1), the fuel consumption ΣFc before correction, the standby consumption before correction, the acceleration consumption before correction, and the correction. Calculate previous travel consumption. Here, for example, it is assumed that the fuel consumption before correction ΣFc = 50L, the standby consumption before correction = 20L, the acceleration consumption before correction = 20L, and the travel consumption before correction = 20L.

  Next, the navigation apparatus 300 calculates the standby consumption ΣK1, the acceleration consumption ΣK2, and the travel consumption ΣK3 that are not corrected using the above equation (3) in the same manner as the correction coefficient calculation formula (1). From these sums, the fuel consumption amount ΣFc_org without correction is calculated. In addition, the navigation device 300 calculates a difference ΔFc between the fuel consumption amount ΣFc_org and the fuel supply amount. Specifically, the standby consumption ΣK1 = 15.338462L, the acceleration consumption ΣK2 = 15.338462L, the travel consumption ΣK3 = 10L, and the fuel consumption ΣFc_org = 40.76923L. The difference ΔFc between the fuel consumption amount ΣFc_org and the fuel supply amount is −0.76923L.

  Next, the navigation device 300 uses the above equation (7) to calculate the standby consumption correction amount ΔK1, the acceleration consumption correction amount ΔK2, and the travel consumption amount correction amount according to the values calculated by the above equation (3). ΔK3 is calculated. Specifically, the standby consumption correction amount ΔK1 = −0.11538L, the acceleration consumption correction amount ΔK2 = −0.11538L, and the travel consumption correction amount ΔK3 = −0.53846L.

  Next, the navigation apparatus 300 uses the above equation (5) in the same manner as the correction coefficient calculation formula (1), using the corrected standby consumption ΣK1, corrected acceleration consumption ΣK2, and corrected travel consumption. ΣK3 is recalculated. Specifically, the corrected standby consumption ΣK1 = 15.269923L, the corrected acceleration consumption ΣK2 = 15.269923L, and the corrected travel consumption ΣK3 = 9.4615538L.

  Next, the navigation apparatus 300 recalculates the first and second correction coefficients H1 and H2 using the above equation (8). Specifically, the corrected first correction coefficient H1 = 0.9925 and the corrected second correction coefficient H2 = 0.946154. Thereafter, the navigation apparatus 300 performs the same process as the correction coefficient calculation formula, part 1, and ends the calculation process.

(Correction coefficient calculation formula in navigation device 300, part 3)
Next, another example of calculation processing by the navigation device 300 will be described. The navigation device 300 may further calculate a correction coefficient based on the acceleration of the vehicle. Specifically, the navigation device 300 performs the correction for the acceleration consumption separately from the correction for the standby consumption.

  More specifically, the navigation apparatus 300 calculates the instantaneous fuel consumption amount Fc (x) of the vehicle using the following equation (9). The following equation (9) is expressed by the following equation (10), similar to the correction coefficient calculation equation (1). Further, the navigation apparatus 300 calculates the standby consumption correction amount ΔK1, the acceleration consumption correction amount ΔK2, the travel consumption correction amount ΔK3, and the fuel consumption amount ΣFc_org using the following equation (11). And the navigation apparatus 300 calculates the 3rd, 4th correction coefficient H11, H12 and the 2nd correction coefficient H2 using the following (12) Formula. The process from the calculation of the instantaneous fuel consumption amount Fc (x) to the calculation of the correction coefficient is the same as the correction coefficient calculation formula, part 1.

  The equation (9) is different from the above-described correction coefficient calculation equation 1 in that a third correction coefficient H11 for correcting standby consumption and a fourth correction coefficient H12 for correcting acceleration consumption are provided separately. It is a point. The third and fourth correction coefficients H11 and H12 correspond to the first correction coefficient H1 in the correction coefficient calculation formula 1. That is, in the correction coefficient calculation formula / Part 3, the acceleration consumption is corrected more accurately by calculating the fourth correction coefficient H12 based on the acceleration of the vehicle.

FIG. 5 is an explanatory diagram schematically illustrating another example of the speed band of the vehicle according to the embodiment. In the above equation (9), the speed band of the vehicle is divided into eight stages of first to eighth speed bands based on a plurality of acceleration bands of the vehicle. Specifically, for example, when the threshold value for dividing the acceleration of the vehicle + the 1 m / s ² and -1 m / s ^2, the acceleration zone of the vehicle, + 1 m / s lower than ^2, + 1 m / s ² or more, -1 m / It is divided into 4 stages of less than s ² and −1 m / s ² or more. Each acceleration band is associated with, for example, a speed band divided into two stages. As shown in FIG. 5, the vehicle speed band is divided into first to eighth speed bands 501 to 508.

  Among the first to eighth speed bands 501 to 508, the speed bands that most affect the acceleration consumption are the fifth and eighth speed bands 505 and 508. Further, the rate at which the second and third speed bands 502 and 503 affect the acceleration consumption is smaller than the other speed bands. The rate at which the first, fourth, sixth and seventh speed bands 501, 504, 506 and 507 affect the acceleration consumption is larger than the second and third speed bands 502 and 503, and the fifth and eighth speed bands 505 and 508. Smaller than. The ratio C% of the first and fourth speed bands 501 and 504, the ratio D% of the second and third speed bands 502 and 503, the ratio E% of the fifth and eighth speed bands 505 and 508, and the sixth and seventh speed bands 506 , 507 ratio F%, (C% + D% + E% + F%) = 100%.

  The weight γ is a weight for correcting the standby consumption. The weighting γ is an initial value of 100%, as with the weighting α and β described above, and is changed each time a correction coefficient is calculated.

(Correction coefficient calculation process in navigation device 300)
As described above, the navigation device 300 automatically calculates a correction coefficient for correcting a deviation between the total fuel consumption amount ΣFc and the actually measured consumption amount in a predetermined section where the vehicle has traveled when a fuel amount is input by the user. To calculate. Details of the correction coefficient calculation process will be described below. Here, the correction coefficient calculation formula / part 1 described above will be described as an example.

  FIG. 6 is a flowchart showing a procedure of correction coefficient calculation processing by the navigation device. In the flowchart of FIG. 6, the navigation apparatus 300 first calculates the fuel consumption amount Fc per unit time using the above equation (2) (step S601). At this time, the navigation device 300 next determines whether or not a fuel supply amount has been input (step S602), and performs the process of step S601 at a predetermined timing until the fuel supply amount is input (step S602: No). loop).

  When the oil supply amount is input (step S602: Yes), the navigation apparatus 300 acquires the oil supply amount (step S603). Here, the amount of oil supply is input by the user via the input device 311, for example. At this time, the navigation apparatus 300 integrates the fuel consumption per unit time using the above equation (3), and calculates the fuel consumption ΣFc in a predetermined section. In addition, the navigation device 300 calculates standby consumption, acceleration consumption, and travel consumption in a predetermined section.

  Next, the navigation apparatus 300 uses the above equation (3) to determine the standby consumption ΣK1, acceleration consumption ΣK2, and travel consumption that are not corrected based on the first and second correction coefficients H1 and H2 before correction. The amount ΣK3 is calculated (step S604). Next, the navigation apparatus 300 calculates a fuel consumption amount ΣFc_org that is not corrected from the sum of the consumption amounts calculated in step S604 (step S605).

  Next, the navigation apparatus 300 calculates a difference ΔFc between the fuel consumption amount ΣFc_org and the fuel supply amount (step S606). Next, the navigation apparatus 300 reads the ratio A of the first speed band stored in the storage device (step S607). Next, the navigation device 300 reads the weighting α stored in the storage device (step S608).

  Next, the navigation apparatus 300 calculates the standby consumption correction amount ΔK1, the acceleration consumption correction amount ΔK2, and the travel consumption correction amount ΔK3 using the equation (4) (step S609). That is, the navigation apparatus 300 divides the difference between the fuel supply amount and the fuel consumption amount ΣFc according to the factors that cause the vehicle to consume fuel based on the first and second speed bands of the vehicle.

  Next, the navigation apparatus 300 recalculates the standby consumption amount ΣK1, the acceleration consumption amount ΣK2, and the travel consumption amount ΣK3 using the above equation (5) (step S610). Next, the navigation apparatus 300 recalculates the first and second correction coefficients H1 and H2 using the above equation (6) (step S611). Then, the navigation device 300 writes the first and second correction coefficients H1 and H2 in the storage device (step S612), and ends the processing according to this flowchart.

(Weighting change process in navigation device 300, part 1)
Next, an example of weighting change processing by the navigation device 300 will be described. FIG. 7 is a flowchart showing the procedure of weight change processing by the navigation device. In the flowchart of FIG. 7, the navigation apparatus 300 acquires the amount of oil supplied to the vehicle input by the user via the input device 311 (step S701). Step S701 corresponds to step S603 described above, for example.

  Next, the navigation device 300 reads the weighting α stored in the storage device (step S702). Next, the navigation apparatus 300 recalculates the first and second correction coefficients H1 and H2 using the above equation (6) (step S703).

  Next, the navigation apparatus 300 determines whether or not the second correction coefficient H2 calculated in step S703 is within an appropriate range (step S704). Specifically, the navigation device 300 determines whether or not the second correction coefficient H2 is a negative value, for example. More specifically, the navigation device 300 determines, for example, whether or not the second correction coefficient H2 is within a range of 0.1 or more and 10 or less.

  When the second correction coefficient H2 is not within the appropriate range (step S704: No), the navigation device 300 subtracts the weighting α by a predetermined subtraction value (step S705). On the other hand, when the second correction coefficient H2 is within the appropriate range (step S704: Yes), the process proceeds to step S706 without performing the process of step S705. Next, the navigation device 300 writes the weighting α in the storage device (step S706), and ends the processing according to this flowchart.

(Weighting change process in navigation device 300, part 2)
Next, another example of the weight change process by the navigation device 300 will be described. FIG. 8 is a flowchart illustrating a procedure of another example of the weight change process by the navigation device. In the flowchart of FIG. 8, the navigation apparatus 300 acquires the amount of fuel supplied to the vehicle input by the user via the input device 311 (step S801). Step S801 corresponds to step S603 described above, for example.

  Next, the navigation device 300 reads the weighting α stored in the storage device (step S802). Next, the navigation apparatus 300 calculates a difference ΔFc between the fuel consumption amount ΣFc_org and the fuel supply amount (step S803). The calculation method of the difference ΔFc is the same as, for example, the correction coefficient calculation formula (1).

  Next, the navigation apparatus 300 determines whether or not the difference ΔFc between the fuel consumption amount ΣFc_org and the fuel supply amount is greater than or equal to a preset threshold value (step S804). When the difference ΔFc is equal to or greater than a preset threshold value (step S804: Yes), the navigation device 300 adds the weighting α with a predetermined addition value (step S805).

  On the other hand, when the difference ΔFc is not greater than or equal to the preset threshold value (step S804: No), the navigation device 300 subtracts the weighting α by a predetermined subtraction value (step S806). Next, the navigation device 300 writes the weight α in the storage device (step S807), and ends the processing according to this flowchart.

  7 and 8 described above may be performed at the timing when step S603 of the correction coefficient calculation process illustrated in FIG. 6 is performed as described above, or the correction coefficient calculation process illustrated in FIG. 6 ends. It may be performed later (after step S612).

  Moreover, the weighting change process shown in FIGS. 7 and 8 is performed every time the fuel supply amount is input (at the time of fuel supply to the vehicle). The weight change process is repeated until the first and second correction coefficients H1 and H2 converge to a value where the difference ΔFc = 0 between the fuel consumption amount ΣFc_org and the fuel supply amount. When the weighting α ≦ 0 is satisfied in step S705 or step S806, the navigation apparatus 300 returns the weighting to the initial value of 100%.

(Example of display 313 of navigation device 300)
FIG. 9 is an explanatory diagram illustrating a display screen of the calculation apparatus according to the embodiment. On the display screen 900 (display 313) of the navigation device 300, the total fuel consumption display unit 910 that displays the total fuel consumption, the corrected fuel consumption display unit (eco status) 920 that displays the corrected total fuel consumption, and the amount of fueling are input. An input unit 930 is provided.

  Specifically, the total fuel consumption display unit 910 displays the fuel consumption amount ΣFc calculated using the above equation (2) as the total fuel consumption. The fuel consumption amount ΣFc is corrected every time the fuel amount is input via the input unit 930. The corrected fuel consumption display unit 920 displays the corrected fuel consumption 921 calculated during the previous refueling and the corrected fuel consumption 922 calculated during the current refueling.

  The input unit 930 includes an operation key 931 that receives a user operation for increasing (+) or decreasing (−) the amount of oil supply, and a fuel amount display unit 932 that displays the amount of oil supply. The input unit 930 is realized by a touch panel method. When the correction amount is changed by +1 or −1, the corrected fuel consumption increases or decreases by about 1%.

  As described above, according to the navigation device 300, the correction coefficient for calculating the fuel consumption amount is calculated based on the fuel supply amount (actual consumption amount) input by the user at the time of fuel supply. More specifically, the navigation device 300 calculates a correction coefficient for calculating the fuel consumption amount based on the difference between the fuel consumption amount and the actually measured consumption amount and the ratio of the speed band of the vehicle. As described above, the calculation device 100 calculates the correction coefficient, which is a clear reference for correcting the deviation of the fuel consumption from the actual consumption, based on the actual fuel supply amount, and thus calculates the fuel consumption accurately. be able to. Further, since the user only inputs the actual amount of fuel supplied to the vehicle, it is not necessary to calculate the fuel consumption by himself / herself, and the correction amount for correcting the fuel consumption is input by the user's own judgment. It is freed from the troublesome operation.

  In addition, the navigation device 300 divides the vehicle speed band into three or more stages and calculates a correction coefficient when calculating the fuel consumption. For this reason, according to the navigation apparatus 300, since the condition setting for calculating the correction coefficient can be performed more finely, the deviation between the fuel consumption amount and the actually measured consumption amount can be further reduced.

  The navigation device 300 further calculates a correction coefficient for calculating the fuel consumption based on the acceleration of the vehicle. For this reason, according to the navigation apparatus 300, since a correction coefficient can be calculated based on a user's acceleration and deceleration state, the accuracy of calculating the fuel consumption can be improved.

  Further, every time the correction coefficient is calculated, the navigation apparatus 300 subtracts the information to be weighted by a predetermined subtraction value so as to approach 0%. Therefore, according to the navigation device 300, every time energy is supplied to the vehicle, the correction coefficient calculated by the navigation device 300 can be converged to a value that brings the difference between the fuel consumption amount and the fuel supply amount closer to zero. it can.

  Note that the calculation method described in this embodiment can be realized by executing a program prepared in advance on a computer such as a personal computer or a workstation. This program is recorded on a computer-readable recording medium such as a hard disk, a flexible disk, a CD-ROM, an MO, and a DVD, and is executed by being read from the recording medium by the computer. The program may be a transmission medium that can be distributed via a network such as the Internet.

DESCRIPTION OF SYMBOLS 100 Calculation apparatus 101 Input part 102 Estimated consumption calculation part 103 Acquisition part 104 Storage part 105 Correction amount calculation part 110 Display part

Claims (6)

Based on the movement information of the moving object, which the moving body is estimated consumption of energy consumed when moving a predetermined interval, is calculated for each factor in the mobile consumes the energy, the factor by As the estimated consumption amount, the standby consumption amount consumed by the mobile body during standby, the acceleration consumption amount consumed by the mobile body during acceleration, and the travel consumption amount consumed when the mobile body travels at a constant speed, An estimated consumption calculation means for calculating each ,
An acquisition means for acquiring an actual measured consumption amount of energy actually consumed when the moving body moves in the predetermined section;
Based on the measured consumption and the estimated consumption, the estimated consumption calculation means calculates the estimated consumption. As the correction amount for each factor, the standby consumption correction amount and the accelerated consumption amount are calculated. A correction amount calculating means for calculating a correction amount of the amount and a correction amount of the travel consumption amount ;
Storage means for storing a ratio obtained by dividing a required time or a required distance required to move the predetermined section for each of a plurality of speed bands of the moving body;
With
The correction amount calculation means eliminates the difference between the standby consumption amount, the sum of the acceleration consumption amount and the travel consumption amount, and the oil supply amount each time the user inputs the oil supply amount as the actually measured consumption amount. As described above, the first correction value for correcting the standby consumption amount and the acceleration consumption amount, the travel consumption amount are corrected, and a second correction value different from the first correction value is calculated,
The correction amount calculating means calculates the correction amount of the standby consumption amount and the correction amount of the acceleration consumption amount using a ratio of a low speed band,
The travel consumption correction amount is calculated using the difference, the standby consumption correction amount, and the acceleration consumption correction amount,
The correction amount calculation means calculates the first correction value using the correction amount for the standby consumption amount and the correction amount for the acceleration consumption amount, and calculates the second correction value as the correction amount for the travel consumption amount. Calculated using
The estimated consumption calculating means calculates the estimated consumption by using the first correction value and the second correction value . The correction amount calculating means is configured to calculate the first correction value when the moving body is assumed to travel in a speed band during standby and acceleration of the vehicle, with the correction amount of the standby consumption and the correction amount of the acceleration consumption. The standby consumption amount and the acceleration consumption amount that are corrected in step 1 are calculated by weighting a predetermined ratio of the difference correction amount allocation.
The calculation apparatus according to claim 1. The calculation apparatus according to claim 2, wherein the correction amount calculation unit subtracts the weight and approaches 0 each time the first correction value is calculated with the initial value of the weight as a maximum value. A calculation method in a calculation device for calculating a correction amount when calculating an estimated consumption amount of energy consumed by a mobile body,
On the basis of the movement information of the moving body, the moving body is provided for calculating the estimated consumption amount of energy consumed when moving a predetermined interval, for each factor that the mobile consumes the energy, the factor As another estimated consumption, the standby consumption consumed by the mobile body during standby, the acceleration consumption consumed by the mobile body during acceleration, the travel consumption consumed when the mobile body travels at a constant speed, An estimated consumption calculation step for calculating
An acquisition step of acquiring an actual measured consumption amount of energy actually consumed when the moving body moves in the predetermined section;
Based on the measured consumption and the estimated consumption, the correction amount of the standby consumption as the correction amount for each factor when the estimated consumption is calculated by the estimated consumption calculation step, and the acceleration A correction amount calculating step of calculating a correction amount of the consumption amount and a correction amount of the travel consumption amount ;
A storage step of storing a ratio of dividing a required time or a required distance required for movement of the predetermined section for each of a plurality of speed bands of the moving body;
Including
The correction amount calculating step eliminates the difference between the standby consumption amount, the sum of the acceleration consumption amount and the travel consumption amount, and the oil supply amount every time the user inputs a fuel supply amount as the actually measured consumption amount. As described above, the first correction value for correcting the standby consumption amount and the acceleration consumption amount, the travel consumption amount are corrected, and a second correction value different from the first correction value is calculated,
The correction amount calculating step calculates the correction amount of the standby consumption amount and the correction amount of the acceleration consumption amount using a ratio of a low speed band,
The travel consumption correction amount is calculated using the difference, the standby consumption correction amount, and the acceleration consumption correction amount,
The correction amount calculating step calculates the first correction value using the correction amount for the standby consumption amount and the correction amount for the acceleration consumption amount, and calculates the second correction value as the correction amount for the travel consumption amount. Calculated using
The estimated consumption calculating step calculates the estimated consumption by using the first correction value and the second correction value . A calculation program for causing a computer to execute the calculation method according to claim 4 . A computer-readable recording medium on which the calculation program according to claim 5 is recorded.

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