WO2012053065A1

WO2012053065A1 - Energy display device, energy display method, energy display program and recoding medium

Info

Publication number: WO2012053065A1
Application number: PCT/JP2010/068408
Authority: WO
Inventors: 安士　光男; 馨一郎藤井; 福田　達也; 進大沢
Original assignee: パイオニア株式会社
Priority date: 2010-10-19
Filing date: 2010-10-19
Publication date: 2012-04-26
Also published as: WO2012053238A1

Abstract

An energy display device (100) calculates the energy consumption of a mobile body and displays the energy consumption on a display unit (110). A calculation unit (102) calculates, by factor, the amount of energy consumed by the operation of the mobile body. A determination unit (104) determines whether energy is being produced or consumed for the energy of each factor. A display control unit (105) totals and displays, by factor, the amount of energy consumed as the starting point for a predetermined position when the determination unit (104) determines that all of the energy for each factor is being consumed. When the determination unit (104) determines that there is energy being produced among the energy for each factor, the display control unit (105) totals and displays, by factor, the other amount of energy consumed as a starting point of a position that has been shifted from the predetermined starting position only by the amount of energy produced in the opposite direction to the direction in which the amount of energy consumed was totaled.

Description

Energy display device, energy display method, energy display program, and recording medium

The present invention relates to an energy display device, an energy display method, an energy display program, and a recording medium that display energy consumption of a moving object. However, the use of the present invention is not limited to the energy display device, the energy display method, the energy display program, and the recording medium described above.

Conventionally, a display device that displays the amount of energy consumed by the operation of a moving body has been proposed. FIG. 15 is a diagram showing display contents of a conventional energy display device. In this display device, a fuel consumption display unit 11, an energy breakdown display unit 12, and a stored energy display unit 13 are displayed on the display unit 10. In the fuel consumption display unit 11, the kinetic energy compatible fuel consumption 112 and the energy compatible fuel consumption 113 are added to the apparent fuel consumption 111 and displayed as a bar graph. The energy breakdown display unit 12 displays a breakdown of the absorbed energy 121 by the brake and the regenerative energy 122 by the motor as a bar graph. The accumulated energy display unit 13 displays the total accumulated amount 131 of kinetic energy and potential energy, each bar graph of the accumulated electric energy 132, and an arrow indicating the state of each energy (for example, see Patent Document 1 below). .)

FIG. 16 is a diagram showing display contents of another conventional energy display device. Fuel consumption 20 is divided into four factors: fuel amount 21 used to drive the engine itself, fuel amount 22 used to run against road surface rolling resistance and gradient resistance, and air resistance. The fuel amount 23 used for traveling and the fuel amount 24 used for accelerating the vehicle are calculated, and these are stacked and displayed in the vertical direction (see, for example, Patent Document 2 below).

JP 2002-274219 A JP 2009-31046 A

However, in the technique of the cited document 1, the energy display is divided into a fuel consumption display unit 11, an energy breakdown display unit 12, and a stored energy display unit 13. When traveling downhill, the potential energy is converted as travel energy. In order to understand this, it is necessary to look at the fuel consumption display unit 11, the energy breakdown display unit 12, and the stored energy display unit 13, and easily and intuitively the fuel consumption state (energy breakdown and fuel consumption configuration). ) Could not understand. Further, in the technique of the cited document 2, the fuel amount used for traveling against the rolling resistance and gradient resistance of the road surface is displayed as the same fuel amount 22, and the breakdown cannot be known.

In order to solve the above-described problems and achieve the object, an energy display device according to the invention of claim 1 is configured to calculate energy consumption consumed by the operation of the moving object for each factor, and for each calculated factor. Display means for displaying information related to energy consumption, and determination means for determining whether the energy is produced or consumed for each of the energy by each factor, and the display means includes the determination means When it is determined that all the energy for each factor is consumed, the energy consumption is accumulated and displayed for each factor starting from a predetermined position, and the energy for each factor is produced by the determination means. If it is determined that there is energy, the energy that is produced in the direction opposite to the accumulated direction from the predetermined position. As the starting point the position which has a transition by Guy amount by accumulating another of the energy consumption by factors and displaying.

The energy display device according to the invention of claim 6 is a calculation means for calculating energy consumption consumed by the operation of the moving body for each factor, and a display means for displaying information relating to the energy consumption for each calculated factor. Determining means for determining whether the energy is produced or consumed for each energy by factor, and the display means has consumed all the energy by factor by the determining means If it is determined that the energy consumption amount is accumulated and displayed from a predetermined position as a starting point, the consumption is consumed when it is determined by the determination means that there is energy produced by the factor. The energy consumption is accumulated and displayed for each energy factor starting from the predetermined position. Both the the accumulated direction as a start point of the predetermined position on the energy being produced and displaying the amount of energy that is the production in the opposite direction.

An energy display method according to an eleventh aspect of the invention is an energy display method for an energy display device that displays energy consumed by operation of a mobile object, and calculates an energy consumption consumed by operation of the mobile object for each factor. A calculation step, a display step for displaying information on energy consumption for each calculated factor, and a determination step for determining whether the energy is produced or consumed for each energy by the factor. In the display step, when it is determined by the determination step that all the energy for each factor is consumed, the energy consumption is accumulated and displayed for each factor starting from a predetermined position. If it is determined that there is energy produced by the factor-specific energy, The direction that the accumulated from the home position and displaying the cumulative other the energy consumption by factors as the starting point the position which has a transition by the amount of energy that is the production in the opposite direction.

An energy display method according to claim 12 is an energy display method for an energy display device that displays energy consumed by operation of a mobile object, and calculates an energy consumption amount consumed by operation of the mobile object for each factor. A calculation step, a display step for displaying information on energy consumption for each calculated factor, and a determination step for determining whether the energy is produced or consumed for each energy by the factor. In the display step, when it is determined by the determination step that all the energy for each factor is consumed, the energy consumption is accumulated and displayed for each factor starting from a predetermined position. If it is determined that there is energy produced among the energy by factor, consumption The energy consumption is accumulated and displayed for each energy starting from the predetermined position as a starting point, and the production is performed in a direction opposite to the accumulated direction starting from the predetermined position for the energy being produced. The amount of energy that is being displayed is displayed.

The energy display program according to the invention described in claim 13 causes the computer to execute the energy display method according to

claim

11 or 12.

A recording medium according to the invention described in claim 14 is characterized in that the energy display program according to claim 13 is recorded in a computer-readable state.

FIG. 1 is a block diagram illustrating a functional configuration of the energy display device according to the embodiment. FIG. 2 is a flowchart showing a procedure of energy display processing by the energy display device. FIG. 3 is a block diagram illustrating a hardware configuration of the navigation apparatus. FIG. 4 is a flowchart illustrating a procedure of energy display processing according to the first embodiment. FIG. 5 is a diagram illustrating an outline of energy display according to the first embodiment. FIG. 6 is a diagram illustrating details of energy display according to the first embodiment. FIG. 7 is a diagram illustrating another energy display example of the first embodiment. FIG. 8 is a diagram illustrating another energy display example of the first embodiment. FIG. 9 is a diagram illustrating another energy display example of the first embodiment. FIG. 10 is a diagram illustrating another energy display example of the first embodiment. FIG. 11 is a flowchart illustrating a procedure of energy display processing according to the second embodiment. FIG. 12 is a diagram illustrating an outline of energy display of the second embodiment. FIG. 13 is a diagram illustrating another energy display example of the second embodiment. FIG. 14 is a diagram illustrating details of energy display according to the second embodiment. FIG. 15 is a diagram showing display contents of a conventional energy display device. FIG. 16 is a diagram showing display contents of another conventional energy display device.

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

(Embodiment)
(Configuration of energy display device)
FIG. 1 is a block diagram illustrating a functional configuration of the energy display device according to the embodiment. The energy display device 100 according to the embodiment divides the energy of the vehicle according to factors and displays it in a form that is easy for the user to understand. The energy display device 100 includes an acquisition unit 101, a calculation unit 102, a determination unit 103, a determination unit 104, a display control unit 105, and a display unit 110.

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 acquisition unit 101 acquires information related to energy calculation of the moving object. This information is data such as information related to the speed of the moving body. Based on the information acquired by the acquisition unit 101, the calculation unit 102 calculates the energy consumption consumed by the operation of the moving object for each factor. Specifically, the energy consumption is calculated for each factor by substituting the information acquired by the acquisition unit 101 as a variable into a predetermined energy consumption estimation formula. The determination unit 103 determines the information acquired by the acquisition unit 101 and outputs information necessary for determination of energy production or consumption. Specifically, it is determined whether the moving body is currently climbing up or down, and whether the moving body is currently accelerating or decelerating, and the determination result is output to the determination unit 104.

The determination unit 104 determines, based on the outputs of the calculation unit 102 and the determination unit 103, for each energy for each factor whether all the energy is consumed or partly produced. In this determination, the determination unit 103 uses the determination result of whether the moving body is up / down or whether the moving body is accelerating / decelerating. In addition, when the moving body travels in a predetermined section, the determination unit 104 can determine whether accumulated energy necessary for traveling in the predetermined section is produced or consumed.

The display control unit 105 generates display data related to the display of energy by factor. The display data differs depending on whether the determination unit 104 determines that all the energy for each factor is consumed and the case where it is determined that there is produced energy among the energy for each factor. It is set as display data in a display form.

When the determination unit 104 determines that all the energy for each factor is consumed, the display control unit 105 starts from a predetermined position (reference position) on the screen on the display data and has a predetermined direction. A display data is generated by accumulating the energy consumption according to the factors.

On the other hand, when the determination unit 104 determines that there is energy produced among the energy for each factor, accumulation is performed along a predetermined direction from a predetermined position (reference position) on coordinates on the display data. Display data in which other energy consumptions are accumulated for each factor is generated starting from the position where the amount of energy produced in the direction opposite to the direction shifted is the starting point.

As another display mode, a position shifted from the predetermined position (reference position) on the coordinates of other display data by the amount of energy produced in the direction opposite to the direction accumulated in the predetermined direction is used as the starting point. It is also possible to generate display data in which the energy consumption amount is accumulated in the predetermined direction for each factor.

The predetermined direction of the display data is displayed so that, for example, a bar graph, a pie chart, etc. extend vertically or horizontally from the reference position. In the case of a pie chart, it suffices if it is possible to clearly show that the reference positions extend in opposite (plus and minus) directions. In addition, auxiliary display data may be displayed so that the reference position can be easily recognized. And the energy consumption amount according to a some factor is divided | segmented according to each factor along one direction where a display is extended, and is arranged in a line in the direction where this factor extends. Further, in order to facilitate visual recognition, different display colors may be used for each factor, or shades may be added.

The display unit 110 displays the display data generated by the display control unit 105. Thereby, the information regarding energy consumption is displayed on the display part 110 according to the classified factor. At this time, the display unit 110 may display the map data together. The display unit 110 can also display, on the map data, a route, an area, and the like that can be reached by the travelable distance calculated by the calculation unit 102.

Note that the information on the speed of the moving object acquired by the acquiring unit 101 is, for example, the speed and acceleration of the moving object. Moreover, the consumption energy estimation formula used in the calculation unit 102 is a formula for estimating the energy consumption amount of the mobile object. Specifically, the energy consumption estimation formula is a polynomial composed of first information, second information, third information, and fourth information having different factors for increasing or decreasing the energy consumption. Details of the energy consumption estimation formula will be described later.

1st information is the information regarding the energy consumed when the moving body stops in the state where the drive source 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 first information is, for example, the amount of energy consumed when the vehicle is stopped with the engine running or when stopped by a signal (hereinafter referred to as “energy consumption”). . That is, the first information is an energy consumption amount consumed due to a factor not related to the traveling of the moving body. More specifically, the first information is an energy consumption amount by an air conditioner or an audio provided in the moving body. The first information may be substantially zero in the case of an EV vehicle.

The second information is information related to energy consumed and recovered 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 predetermined time is a time interval at regular intervals, for example, per unit time.

Further, in the case of an EV vehicle, the second information is a ratio (hereinafter referred to as “recovery rate”) between the amount of energy consumed when the moving body is accelerated and the amount of energy collected when the moving body is decelerated. Good. In the case of an EV vehicle, the recovered energy is energy that is recovered by converting kinetic energy generated during acceleration of the moving body into electrical energy during deceleration. A detailed description of the recovery rate will be described later.

Also, the recovered energy is energy that can be saved without consuming more energy than necessary in the case of a gasoline vehicle. Specifically, in the case of a gasoline vehicle, as a driving method for improving fuel consumption, a method of reducing the time required to step on the accelerator is known. That is, in a gasoline vehicle, fuel consumption can be suppressed by maintaining the traveling of the moving body by the kinetic energy (inertial force) generated when the moving body is accelerated. Further, by using the engine brake when the moving body is decelerated, it is possible to suppress fuel consumption caused by stepping on the brake. In other words, in the case of a gasoline vehicle, the consumed fuel is reduced (fuel cut) to save the fuel, but here it is assumed that the energy is recovered as in the case of an EV vehicle.

The third information is information related to energy consumed by the resistance generated when the mobile object is traveling. The traveling time of the moving body is a traveling state in which 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.

The resistance generated in the moving body due to the weather condition is, for example, air resistance due to weather changes such as rain and wind. The resistance generated in the moving body due to the road condition is road resistance due to road gradient, pavement state of the road surface, and the like. The resistance generated in the moving body depending on the vehicle condition is a load resistance applied to the moving body due to tire air pressure, number of passengers, loaded weight, and the like.

Specifically, the third information is energy consumption when the moving body is driven at a constant speed in a state where it receives air resistance, road surface resistance, and load resistance. More specifically, the third information is, for example, energy consumption consumed when the moving body travels at a constant speed, such as air resistance generated in the moving body due to a headwind or road resistance received from a road that is not paved. Amount.

The fourth information is information related to energy consumed and recovered by a change in altitude where the moving object is located. The change in altitude at which the moving body is located is a state in which the altitude at which the moving body is located changes over time. Specifically, the change in altitude at which the moving body is located is a traveling state in which the altitude changes when the moving body travels on a sloped road within a predetermined time.

The fourth information is that when the road slope is unknown or when the calculation is simplified, it is assumed that there is no change in the altitude at which the moving body is located, and the energy consumption is calculated with the road gradient θ = 0 in the energy estimation formula described later. The amount can also be estimated.

The acquisition unit 101 is managed, for example, by an electronic control unit (ECU) via an in-vehicle communication network (hereinafter simply referred to as “CAN”) that operates according to a communication protocol such as CAN (Controller Area Network). The speed and acceleration of the moving body that is being used may be acquired and used as variables relating to the first information, the second information, the third information, and the fourth information.

Also, the acquisition unit 101 may acquire information on the remaining energy amount of the moving object and the actual energy consumption amount of the moving object, and use them as variables of the energy consumption estimation formula. Here, the remaining energy amount is the amount of energy remaining in the fuel tank or battery of the mobile body. That is, in the case of an EV vehicle, the recovered energy amount is also included in the remaining energy amount. Specifically, the acquisition unit 101 acquires, for example, the remaining energy amount and the actual energy consumption managed by the ECU via an in-vehicle communication network that operates according to a communication protocol such as CAN.

In addition, the acquisition unit 101 acquires information about a road and uses it as a variable of a consumption energy estimation formula. However, the acquisition unit 101 may acquire information about a road from map information stored in a storage unit (not shown), an inclination sensor, or the like A road gradient or the like may be acquired.

Here, the information on the road is, for example, road information that causes a change in the amount of energy consumed or recovered by the traveling of the moving body. Specifically, the information on the road is, for example, a running resistance generated in the moving body due to the road type, road gradient, road surface condition, and the like. The running resistance can be calculated by the following equation (1), for example. Generally, running resistance is generated in a moving body during acceleration or running.

The calculation unit 102 calculates the energy consumption based on the consumption energy estimation formula including the first information, the second information, the third information, and the fourth information. Specifically, the calculation unit 102 estimates the energy consumption amount of the moving body based on the information regarding the speed of the moving body acquired by the acquiring unit 101.

More specifically, the calculation unit 102 estimates the energy consumption per unit time based on the consumption energy estimation formula shown in the following formula (2) or formula (3), or both formulas. The energy consumption amount of the moving body per unit time during acceleration and traveling is the product of travel resistance, travel distance, net motor efficiency, and transmission efficiency, and is expressed by the following equation (2). The energy consumption estimation formula shown in the formula (2) is a theoretical formula that estimates the energy consumption per unit time during acceleration and traveling.

Where ε is the net thermal efficiency and η is the total transmission efficiency. If the sum of the acceleration α of the moving object and the acceleration g of the gravity from the road gradient θ is the combined acceleration | α |, the consumption energy estimation formula when the combined acceleration | α | is negative is the running resistance, the running distance, and the net motor. It is the product of efficiency and transmission efficiency, and is expressed by the following equation (3). The case where the combined acceleration | α | is negative is when the moving body is decelerating. The energy consumption estimation equation shown in equation (3) is a theoretical equation that estimates the energy consumption per unit time during deceleration.

In the above formulas (2) and (3), the first term on the right side is the energy consumption (first information) during idling. The second term on the right side is the energy consumption (fourth information) due to the gradient component and the energy consumption (third information) due to the rolling resistance component. The third term on the right side is energy consumption (third information) due to the air resistance component. Further, the fourth term on the right side of the equation (2) is the energy consumption (second information) by the acceleration component. The fourth term on the right side of the equation (3) is the energy consumption (second information) by the deceleration component. The information indicated by the other variables is the same as the above equation (1).

In the above formulas (2) and (3), the motor efficiency and the drive efficiency are considered to be constant. However, in practice, the motor efficiency and the driving efficiency vary due to the influence of the motor speed and torque. Therefore, the following equations (4) and (5) show empirical equations for estimating the energy consumption per unit time. An empirical formula for estimating the energy consumption when the combined acceleration | α + g · sin θ | is positive is expressed by the following formula (4). That is, the energy consumption estimation formula shown in the formula (4) is an empirical formula for estimating the energy consumption per unit time during acceleration and traveling.

Also, the empirical formula for estimating the energy consumption when the composite acceleration | α + g · sin θ | is negative is expressed by the following formula (5). That is, the energy consumption estimation formula shown in the formula (5) is an empirical formula that estimates the energy consumption per unit time during deceleration.

In the above equations (4) and (5), the coefficients a ₁ and a ₂ are constants that are set according to the status of the moving object. The coefficients k ₁ , k ₂ , and k ₃ are variables based on energy consumption during acceleration. The information indicated by the first term on the right side to the fourth term on the right side is the same as in the above equations (2) and (3).

The above formula (2), which is a theoretical formula, and the formula (4), which is an empirical formula, have similar structures. The first term on the right side of the equations (2) and (4) is a component that does not depend on the speed, and is both first information. The second term on the right side of equation (4) is the energy consumption for the gradient resistance and acceleration resistance. That is, the second term on the right side of the equation (4) is the second information representing the increase in kinetic energy due to the speed increase and the fourth information representing the increase in potential energy due to the altitude change. This corresponds to the acceleration component of the term and the gradient component of the second term on the right side of equation (2). The third term on the right side of equation (4) is third information, and corresponds to the rolling resistance component of the second term on the right side of equation (2) and the air resistance component of the third term on the right side of equation (2).

The above formula (3), which is a theoretical formula, and the formula (5), which is an empirical formula, have similar structures in the same manner as the relationship between the formulas (2) and (4) described above. Β in the second term on the right side of the equation (5) is the amount of potential energy and kinetic energy recovered (hereinafter referred to as “recovery rate”).

The calculation unit 102 inputs the travel speed V and the travel acceleration α per unit time using the consumption energy estimation formula shown in the above formula (4) or formula (5), or both formulas, thereby running speed. Alternatively, the energy consumption at the moment when the travel acceleration is acquired may be estimated. However, when the travelable range is estimated using the above formula (4) or (5), the speed and acceleration per unit time in the entire travel section stroke to be traveled are acquired every 1 second, for example, and 1 second If you try to estimate the amount of energy consumed every time, the amount of calculation may become enormous.

Therefore, the calculation unit 102 may estimate the energy consumption amount in this section using the average value of the traveling speed and the average value of the traveling acceleration in a certain section. The energy consumption amount in the section can be obtained by using a consumption energy estimation formula defined based on the above formula (4) or formula (5). Specifically, the calculation unit 102 averages the energy consumption per unit time consumed when the moving body is accelerated and the energy consumption per unit time collected when the moving body is decelerated as the second information. Use the estimation formula.

More specifically, the calculation unit 102 estimates the energy consumption using the empirical expression of the energy consumption in the section shown in the following equation (6) or (7), or both equations. Good.

The consumption energy estimation formula shown in the following equation (6) is a consumption energy estimation formula in the section when the altitude difference Δh of the section in which the mobile body travels is positive. The case where the altitude difference Δh is positive is a case where the moving body is traveling uphill.

On the other hand, the consumption energy estimation formula shown in the following equation (7) is a consumption energy estimation formula in the section when the altitude difference Δh of the section in which the mobile body travels is negative. The case where the altitude difference Δh is negative is a case where the moving body is traveling downhill.

In the above formulas (6) and (7), the first term on the right side is the energy consumption (first information) during idling. The second term on the right side is the energy consumption (second information) by the acceleration resistance. The third term on the right side is energy consumption consumed as potential energy (fourth information). The fourth term on the right side is energy consumption (third information) due to air resistance and rolling resistance (hereinafter collectively referred to as “running resistance”) received per unit area.

Further, for example, the calculation unit 102 may acquire the recovery rate β provided by the manufacturer, or may calculate the recovery rate β based on the information regarding the speed acquired by the acquisition unit 101.

Next, a method for calculating the recovery rate β will be described. In the above equation (6), if the second term on the right side is the energy consumption P _acc of the acceleration component in the travel section, the energy consumption P _acc of the acceleration component is _calculated from the total energy consumption (left side) in the travel section when idling. Energy consumption (first term on the right side) and energy consumption due to running resistance (fourth term on the right side) are subtracted and expressed by the following equation (8).

In the above equation (8), it is assumed that the moving body is not affected by the road gradient θ (θ = 0). In this case, the third term on the right side of the equation (6) is set to zero. Then, by substituting the above equation (8) into the above equation (6), the calculation formula for the recovery rate β shown in the following equation (9) can be obtained.

The recovery rate β is about 0.7 to 0.9 for EV vehicles, about 0.6 to 0.8 for HV vehicles, and about 0.2 to 0.3 for gasoline vehicles. The recovery rate of the gasoline vehicle is a ratio between an energy consumption amount when the moving body is accelerated and an energy amount that is fuel-cut when decelerating.

Further, the calculation unit 102 calculates the energy consumption amount per unit time when traveling in the travel section based on any one or more of the energy consumption estimation expressions shown in the expressions (2) to (5). In addition to the estimation, the energy consumption when traveling in the travel section is estimated by integrating the travel time.

Specifically, the calculation unit 102 estimates the energy consumption per unit time based on the consumption energy estimation formula using the information about the actual speed or the information about the travel speed, and the travel acquired by the acquisition unit 101 By integrating over time, energy consumption in the travel segment is estimated. Since the energy consumption amount in the travel section is estimated using the travel time when the mobile body actually traveled in the past in the travel section, the energy consumption amount closer to the actual energy consumption amount can be estimated.

(About energy display processing)
Next, energy display processing by the energy display device 100 will be described. FIG. 2 is a flowchart showing a procedure of energy display processing by the energy display device. In the flowchart of FIG. 2, the energy display device 100 acquires information related to energy calculation of the moving object by the acquisition unit 101 (step S201). Next, the energy display device 100 uses the energy consumption estimation formula including the first information, the second information, the third information, and the fourth information to cause the calculation unit 102 to calculate the energy consumption by factor. Calculate (step S202).

Next, it is determined by the determination unit 104 of the energy display device 100 whether all the energy is consumed or partly produced (step S203). This determination is made based on the energy consumption value calculated by the calculation unit 102. The determination result of the determination unit 103 may be added to this determination. In this case, the determination unit 104 obtains a determination result from the determination unit 103 as to whether the moving body is ascending / descending and the moving body is accelerating / decelerating, and all energy is consumed or partly produced. Determine if there is something.

When the determination by the determination unit 104 determines that all the energy for each factor is consumed (step S203: Yes), the display control unit 105 determines that the energy produced among the energy for each factor is Display data of a different display form is generated when it is determined that there is (step S203: No).

For example, when it is determined that all the energy for each factor is consumed (step S203: Yes), the display control unit 105 generates display data in which the energy for each factor is accumulated in the display mode at the time of consumption. (Step S204). On the other hand, when it is determined that there is energy produced among the energy for each factor (step S203: No), the display control unit 105 accumulates the energy for each factor in the display form during partial production. Display data is generated (step S205).

Next, the display unit 110 of the energy display device 100 displays the display data generated by the display control unit 105 (step S206), and ends the processing according to this flowchart. The above processing is continuously performed at predetermined time intervals.

The display screen on the display unit 110 in the case where all the energy for each factor is consumed due to the change in the traveling state of the moving body and the case where there is the energy produced among the energy for each factor The display form is changed around the reference position. Further, if the energy amount of each factor varies with the change of the driving situation, the display length of each factor itself is changed accordingly.

For example, in the case of an uphill, the starting point of potential energy is the origin, this origin is the reference position on the display screen, the energy for each factor is the potential energy (fourth information), idling consumption (first information), The travel resistance (third information) and acceleration loss (second information) are stacked and displayed in this order. On the other hand, in the case of a downhill, the end point (minus coordinate) of the potential energy is used as the origin, and the accumulated value is displayed from the reference position in the order of idle consumption, running resistance, and acceleration loss. As another display mode, a position shifted from the predetermined position (reference position) on the coordinates of other display data by the amount of energy produced in the direction opposite to the direction accumulated in the predetermined direction is used as the starting point. Display data obtained by accumulating the energy consumption amount in the predetermined direction is displayed for each factor.

As described above, the energy display device 100 according to the embodiment calculates the energy consumption amount of the moving object for each factor, and the energy for each factor is consumed and the energy for each factor is produced. In the case where there is energy that is present, the display form of the display screen is changed around the reference position. Accordingly, appropriate display can be performed when all the energy for each factor is consumed and when there is energy produced among the energy for each factor. That is, even when there is energy to be produced in part, it is possible to perform a display that can easily grasp how much the actual consumption is.

Example 1
Example 1 of the present invention will be described below. In the first embodiment, an example in which the present invention is applied will be described using the navigation device 300 mounted on a vehicle as the energy display device 100.

(Hardware configuration of navigation device 300)
Next, the 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, the navigation apparatus 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.

CPU 301 governs overall control of navigation device 300. The ROM 302 records programs such as a boot program, a travel distance estimation program, a data update program, and a map data display 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, vehicle information, road information, travel history, and the like. Map data is used to display information related to the distance that can be traveled in a car navigation system. Background data that represents features (features) such as buildings, rivers, and the ground surface, and roads that represent road shapes with links and nodes. Includes shape data. Here, the vehicle information, the road information, and the travel history are data relating to roads used as variables in the energy consumption estimation formulas shown in the formulas (2) to (7).

The voice I / F 308 is connected to a microphone 309 for voice input and a speaker 310 for voice 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.

The input device 311 includes a remote controller, a keyboard, a touch panel, and the like provided with a plurality of keys for inputting characters, numerical values, various instructions, and the like. The input device 311 may be realized by any one form of a remote control, a keyboard, and a touch panel, but may 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 wireless and functions as an interface between the navigation device 300 and the CPU 301. The communication network functioning as a network includes a public line network, a mobile phone network, DSRC (Dedicated Short Range Communication), LAN, WAN, and the like. 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.

Various sensors 317 output information for determining the position and behavior of the vehicle, such as a vehicle speed sensor, an acceleration sensor, an angular velocity sensor, and a tilt 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 acquisition unit 101, the calculation unit 102, the determination unit 103, the determination unit 104, and the display control unit 105 of the energy display device 100 illustrated in FIG. 1 are included in the ROM 302, the RAM 303, the magnetic disk 305, the optical disk 307, and the like in the navigation device 300 described above. Using the recorded program and data, the CPU 301 executes a predetermined program and controls each part in the navigation device 300 to realize its function.

(Outline of energy consumption estimation by the navigation device 300)
The navigation device 300 according to the present embodiment estimates the energy consumption during travel of a vehicle on which the vehicle's own device is mounted. Specifically, the navigation device 300 uses, for example, one or more of the consumption energy estimation formulas shown in the following formulas (2) to (7) based on the speed, acceleration, and vehicle gradient. To estimate the energy consumption of the vehicle.

The energy consumption estimation formula shown in the above equation (2) is a theoretical formula for estimating the energy consumption per unit time during acceleration and traveling. The consumption energy estimation formula shown in the above equation (3) is a theoretical formula for estimating the consumption energy per unit time during deceleration.

Also, in the above formulas (2) and (3), the first term on the right side is the energy consumption (first information) during idling. The second term on the right side is the energy consumption (fourth information) due to the gradient component and the energy consumption (third information) due to the rolling resistance component. The third term on the right side is energy consumption (third information) due to the air resistance component. Further, the fourth term on the right side of the equation (2) is the energy consumption (second information) by the acceleration component. The fourth term on the right side of the equation (3) is the energy consumption (second information) by the deceleration component.

The energy consumption estimation formula shown in the above equation (4) is an empirical formula for estimating the energy consumption per unit time during acceleration and traveling. The energy consumption estimation formula shown in the above equation (5) is an empirical formula for estimating the energy consumption per unit time during deceleration.

In the above equations (4) and (5), the coefficients a ₁ and a ₂ are constants that are set according to the vehicle situation. The coefficients k ₁ , k ₂ , and k ₃ are variables based on energy consumption during acceleration. Further, the speed V and the acceleration A, and other variables and information indicated by the portion corresponding to the first term on the right side to the fourth term on the right side are the same as the above equations (2) and (3).

In addition, the navigation device 300 uses the average speed and average acceleration of the vehicle in a certain range of sections, and uses the average energy consumption formula shown in the following formula (6) or (7) to determine whether the vehicle travels. Energy consumption may be estimated.

The energy consumption estimation formula shown in the above equation (6) is a theoretical formula for estimating the energy consumption in the section when the altitude difference Δh of the section in which the mobile body travels is positive. The consumption energy estimation formula shown in the above equation (7) is a theoretical formula for estimating the energy consumption amount in the section when the altitude difference Δh of the section in which the mobile body travels is negative.

In the above formulas (6) and (7), the first term on the right side is the energy consumption (first information) at the time of idling. The second term on the right side is the energy consumption (second information) by the acceleration resistance. The third term on the right side is energy consumption consumed as potential energy (fourth information). The fourth term on the right side is energy consumption (third information) due to air resistance and rolling resistance (running resistance) received per unit area.

In addition, the navigation apparatus 300 uses the multiple energy analysis method or the regression analysis method to calculate the first information every second using the energy consumption estimation equation shown in the above equation (4) or (5), or both equations. P _idle , efficiency εη, moving body weight M, and the like may be calculated to correct the variables of the energy consumption estimation equation shown in the above equations (2) to (7).

(About running resistance)
Next, the running resistance generated in the vehicle will be described. The navigation device 300 calculates the running resistance by the following equation (1), for example. Generally, traveling resistance is generated in a moving body during acceleration or traveling due to road type, road gradient, road surface condition, and the like.

(Definition of recovery rate β)
Next, the concept of the EV vehicle collection rate will be described. Using the following formulas (10) to (13) as an example, assume that the vehicle travels at a constant speed after accelerating from the starting point, and then decelerates and stops. Define β. Moreover, it is set as the energy consumption (actual energy consumption) Pt measured when the vehicle actually travels. It is assumed that road gradient θ = 0 in the travel section.

The energy consumption during acceleration is the sum of the energy consumption Ps due to running resistance and the energy consumption Pa due to acceleration resistance, as shown in the following equation (10). Here, the energy consumption amounts Ps and Pa are theoretically calculated data.

Pt = Ps + Pa (10)

Here, further assume the following. The running resistance generated in the vehicle is equal between acceleration and deceleration. Further, a part of the kinetic energy generated by the acceleration resistance is converted into electric power during deceleration and stored as an amount of energy to be recovered. In other words, when the vehicle decelerates, energy is consumed by the running resistance, but the kinetic energy generated by the acceleration resistance is recovered, so the actual amount of energy consumed is the amount of energy recovered from the amount of energy by the running resistance. Subtracted value.

For this reason, if the ratio (recovery rate) β of the kinetic energy due to acceleration resistance is recovered during deceleration, the energy consumption during deceleration is the energy consumption due to running resistance as shown in the following equation (11). This is the difference between Ps and the recovered energy amount β · Pa.

Pt = Ps-β · Pa (11)

The actual energy consumption Pt is the sum of the above equations (10) and (11) as shown in the following equation (12).

Pt = Ps + (1-β) · Pa (12)

Here, since the actual energy consumption Pt, the energy consumption Ps due to running resistance, and the energy consumption Pa due to acceleration resistance are known values, the recovery rate β can be calculated using the following equation (13). it can.

Β = 1− (Pt−Ps) / (Pa) (13)

Next, a method for calculating the recovery rate β based on actual traveling of the vehicle will be described. First, the vehicle's speed, energy consumption (output), and the amount of energy due to running resistance other than adjustment are measured every predetermined time. As a result, when the vehicle is accelerating, the speed, output, and running resistance all increase. . When the vehicle is traveling at a constant speed, both the output and the traveling resistance are constant values. Further, when the vehicle is decelerating, the output decreases and reaches a negative region, and the running resistance decreases in the positive region.

That is, the output recovers energy when decelerating. On the other hand, only the energy consumption occurs in the running resistance other than acceleration.

The energy consumption E13 during acceleration is the sum of the energy consumption E11 due to acceleration resistance and the energy consumption E12 due to travel resistance other than acceleration / deceleration as shown in the following equation (14). The energy consumption due to running resistance other than acceleration / deceleration is the energy consumption consumed to maintain running.

E13 = E11 + E12 (14)

Further, the energy consumption amount E23 during traveling at a constant speed (cruising) is an energy consumption amount E22 due to traveling resistance other than acceleration / deceleration as shown in the following equation (15).

E23 = E22 (15)

Further, as shown in the following equation (16), the energy consumption amount E33 during deceleration is the sum of the energy amount E31 recovered during deceleration and the energy consumption amount E32 due to running resistance other than acceleration / deceleration.

E33 = E31 + E32 = E32-β × E11 (16)

That is, the recovery rate β, which is the ratio between the energy consumption E11 due to acceleration resistance and the energy amount E31 recovered during deceleration, can be calculated using the following equation (17).

Β = E33 / E11 (17)

That is, the above equation (17) corresponds to the following equation (9). Specifically, the formula for calculating the recovery rate shown in the following equation (9) is derived as follows. In the above equation (6), if the second term on the right side is the energy consumption P _acc of the acceleration component in the predetermined section, the energy consumption P _acc of the acceleration component is _calculated from the total energy consumption (left side) in the predetermined section: It is obtained by subtracting the energy consumption during idling (first term on the right side) and the energy consumption due to running resistance (fourth term on the right side), and is expressed by the following equation (8).

In the above equation (8), it is assumed that the vehicle is not affected by the road gradient θ (θ = 0). Then, by substituting the above equation (8) into the above equation (6), the calculation formula for the recovery rate β shown in the following equation (9) can be obtained.

(Example of energy display)
FIG. 4 is a flowchart illustrating a procedure of energy display processing according to the first embodiment. The flowchart in FIG. 4 is described as the operation of each unit of the navigation device 300 being performed. First, the navigation apparatus 300 collects data necessary for calculating energy consumption (step S401). Next, the navigation apparatus 300 calculates energy consumption according to a factor using the consumption energy estimation formula which consists of 1st information, 2nd information, 3rd information, and 4th information (step S402). .

Next, the navigation device 300 determines whether or not the current moving body is an uphill (step S403). For example, when the altitude difference Δh in the above formulas (6) and (7) is positive, it is determined that the mobile body is traveling uphill, and when the altitude difference Δh is negative, the mobile body travels downhill. It is determined that And when a mobile body is an uphill (step S403: Yes), it determines that all the energy is consumed. Then, the reference position is set as a display start point for potential energy (step S404). On the other hand, when the moving body is a downhill (step S403: No), it is determined that a part of the energy is produced. Then, the position of minus coordinates corresponding to the potential energy is set as the reference position (step S405).

After this, idling, running resistance, and acceleration loss are accumulated and displayed from the reference position (step S406). The potential energy is displayed only in the case of uphill. Each of the above processes is repeatedly executed every 1 msec, for example, and the display is constantly updated.

FIG. 5 is a diagram showing an outline of energy display according to the first embodiment. The example of the display screen produced | generated in the display control part 105 of FIG. 1 is shown. Note that FIG. 5 is an example in which the amount of energy consumed or produced during travel of the EV vehicle is displayed for each factor, and it is assumed that no energy is consumed due to idling. In FIG. 5, (a) in the case of an uphill, the starting point of potential energy is aligned with the reference position, and the potential energy P1 and traveling resistance (traveling resistance, acceleration loss) P2 are accumulated in the positive direction in this order. indicate. (B) In the case of flat ground traveling, only the traveling resistance P2 is displayed from the reference position. (C) In the case of a downhill, the end point (minus coordinate) of potential energy is used as a reference position and displayed in the plus direction in the order of travel resistance (travel resistance, acceleration loss). That is, the reference position is displayed by shifting from the position of the origin (0) to the minus coordinate by the position energy P1 (position L). The reference position is a position that is a starting point for accumulating the energy consumption of each factor.

FIG. 6 is a diagram showing details of energy display according to the first embodiment. It is the example which displayed the display screen shown in FIG. 5 according to each item of the state of a moving body and energy consumption. The determination unit 104 determines an item of energy consumption to be displayed according to the state of the moving object, and outputs it to the display control unit 105. (A) In the case of constant running or deceleration on flat ground, the idling part p3 and the running resistance part p2, which are the energy consumed from the coordinate origin (0), are stacked and displayed in the horizontal positive direction in the graph. To do. (B) In the case of acceleration on a flat ground, the values are accumulated and displayed in the order of the idling amount p3, the running resistance amount p2, and the acceleration loss amount p4 from the origin of the coordinates. (C) In the case of acceleration traveling on an uphill, the position energy component p1, the idling component p3, the traveling resistance component p2, and the acceleration loss component p4 are accumulated and displayed in this order from the coordinate origin. (D) In the case of constant traveling or deceleration on an uphill, the position energy component p1, the idling component p3, and the traveling resistance component p2 are accumulated and displayed in this order from the coordinate origin.

On the other hand, in the case of a downhill, as described above, the reference position is shifted from the position of the origin (0) to the negative coordinate by the position energy p1 (position L). First, (e) In the case of acceleration on a downhill, starting from the negative coordinate reference position (L), the idling amount p3, the running resistance amount p2, and the acceleration loss amount p4 are stacked in the plus direction and displayed. To do. In addition, (f) when decelerating on a downhill, starting from the negative coordinate reference position (L), the idling amount p3 and the running resistance amount p2 are stacked and displayed in this order. As described above, in the positive area on the display screen, the energy for the actual consumption is displayed regardless of the state of the moving object (a) to (f).

As described above, the potential energy component can be either a plus or minus component in terms of energy consumption, depending on the state of the moving body. For this reason, in Example 1, the reference position for stacking when energy consumption is stacked and displayed for each factor can be shifted by the position energy depending on the state of the moving body. As a result, it is possible to easily grasp how much energy is actually consumed when the moving body is on a downhill by displaying on the plus side on the display screen. In addition, it is possible to intuitively and easily grasp the fuel consumption structure (energy breakdown and fuel consumption composition) simply by looking at one display (bar graph).

FIG. 7 is a diagram showing another energy display example of the first embodiment. In the above display example, the bar graph is displayed in the horizontal direction, and each factor of energy consumption is displayed. However, as shown in FIG. 7, the factors may be stacked and displayed in the upward direction. In this case, in order to make the position of the origin easy to understand, an auxiliary display section 701 that makes the origin position easy to understand is displayed on the side of the bar graph. The auxiliary display unit 701 includes a mountain 702 and a river 703, and displays a mountain of the mountain 702 in accordance with the origin position. Thereby, it becomes possible to easily grasp that the height direction of the mountain 702 is the actual energy consumption. In the case of a downhill, the reference position is displayed by shifting in the direction of the position L downstream of the river 703. Furthermore, not limited to the example of FIG. 7, for example, a bar graph may be displayed along the slope of the mountain 702 or the flow of the river 703.

In the above embodiment, the processing of FIG. 4 is executed in real time (for example, every 1 msec) and displayed on the display unit 110. Not limited to this, the calculation unit 102 calculates an average value of each factor of energy consumption per predetermined unit time (for example, 10 sec or 1 min), and displays the energy display shown in the above display example for each predetermined unit time. It is good also as a structure to perform. Thereby, the transition of energy consumption can be displayed every predetermined unit time, and even if there is an energy fluctuation within this predetermined time unit, it can be absorbed and displayed. In particular, even when the energy consumption greatly fluctuates in a short time, the display can be prevented from fluctuating greatly, and the display can be easily viewed.

FIG. 8 is a diagram showing another energy display example of the first embodiment. The kinetic energy when the moving body is traveling on a flat ground is positive when the moving body is accelerated, and is negative when the moving body is decelerated. For this reason, (a) kinetic energy (acceleration loss) p4 and running resistance p2 are consumed as energy consumption during acceleration. Then, with the coordinate origin (0) as the reference position, the kinetic energy (acceleration loss) p4 and the running resistance p2 are stacked and displayed in the positive direction. Also, (b) when traveling on a flat ground, only the traveling resistance p2 is displayed from the position of the origin. Then, (c) at the time of deceleration, only the amount of kinetic energy recovered by deceleration is decremented from the origin (0), and the running resistance component p2 is displayed in the plus direction starting from the shifted reference position L. As described above, the shift of the reference position L described above is not limited to ascending / descending of the moving body, but can also be displayed by shifting the acceleration / deceleration of the moving body.

FIG. 9 is a diagram showing another energy display example of the first embodiment. The situation when decelerating uphill and accelerating downhill is shown. (A) When decelerating on an uphill, only the recovered kinetic energy is decremented from the origin (0), and the positional energy p1 and the running resistance p2 are accumulated and displayed in a positive direction starting from the shifted reference position L. Let Also, (b) when accelerating on a downhill, only the minus value of the potential energy component p1 is minus from the origin (0), and the kinetic energy component p4 and the running resistance component p2 are added up starting from the shifted reference position L. Display in the direction of. Thus, the energy for obtaining the starting point of the reference position L can be selected according to the up / down state of the moving body and the acceleration / deceleration state.

FIG. 10 is a diagram showing another energy display example of the first embodiment. In the display example described above, a linear bar graph extending in the horizontal direction or the vertical direction is used. However, as shown in FIG. A pie chart may be used. In this case, as described above, an area for shifting the reference position by the amount of minus energy consumption may be secured.

In the first embodiment described above, the potential energy (or kinetic energy) items are displayed because the energy is consumed or produced when the moving body is in the up / down state and the acceleration / deceleration state. Regarding the item of potential energy (or kinetic energy), the display state of the moving body may be different in the up and down states (similarly, different display colors in the acceleration / deceleration). By seeing this display color, it is possible to easily grasp whether the state of the moving body is up / down or acceleration / deceleration.

As described above, according to the first embodiment, the shift is made to the minus position by the amount of plus energy consumption, and each factor of the energy consumption is accumulated and displayed with the shifted position as the reference position. Thereby, when it is desired to know the current energy consumption of the mobile body, the energy amount actually consumed is displayed in the area on the plus side from the coordinate position of the origin (0). Thereby, even if the traveling state of the mobile body changes, the change in the display length of the entire energy consumption can be reduced, and the energy consumption amount during traveling can be easily understood.

(Example 2)
Next, a second embodiment of the present invention will be described. The second embodiment is the same as the first embodiment except that the display contents are changed, and the navigation device 300 in FIG. 3 performs the same process. In the second embodiment, the reference position remains the origin, and the origin is not shifted as in the first embodiment.

FIG. 11 is a flowchart showing the procedure of energy display processing according to the second embodiment. First, the navigation apparatus 300 collects data necessary for calculating energy consumption (step S1101). Next, the navigation apparatus 300 calculates energy consumption according to a factor using the consumption energy estimation formula which consists of 1st information, 2nd information, 3rd information, and 4th information (step S1102). .

Next, the navigation apparatus 300 determines whether or not the current moving body is an uphill (step S1103). For example, when the altitude difference Δh in the above formulas (6) and (7) is positive, it is determined that the mobile body is traveling uphill, and when the altitude difference Δh is negative, the mobile body travels downhill. It is determined that However, the detection value of the tilt sensor may be used. And when a mobile body is an uphill (step S1103: Yes), it determines that all the energy is consumed. Then, the potential energy is displayed in the plus direction from the origin. Then, the running resistance is displayed in the plus direction from the end point of the potential energy (step S1104). On the other hand, when the mobile body is a downhill (step S1103: No), it is determined that a part of the energy is produced. Then, the position energy is displayed in the minus direction from the origin. Further, the running resistance is displayed in the plus direction from the origin (step S1105).

FIG. 12 is a diagram showing an outline of the energy display of the second embodiment. The example of the display screen produced | generated in the display control part 105 of FIG. 1 is shown. (A) In the case of an uphill, the starting point of potential energy is the origin (0), and this origin is the reference position. From this origin, the position energy P1 and the traveling resistance (idling consumption, traveling resistance, acceleration loss) P2 are stacked in the order of plus and displayed. (B) In the case of flat ground traveling, only the traveling resistance P2 is displayed from the reference position. (C) Even in the case of a downhill, the running resistance (idling consumption, running resistance, acceleration loss) P2 is displayed in the plus direction with the origin (0) as the reference position. On the other hand, due to the downhill, the recovered amount of potential energy P1 is displayed in the minus direction with the origin (0) as the reference position.

According to the above display, particularly when the moving body is in the state of (c) downhill, it is possible to display the running resistance P2 and the minus amount of potential energy. In this regard, in the past, only the actual consumption energy (the portion indicated by l in the figure) that is the difference between them could be displayed, and it was impossible to know the consumption energy and the production energy. become able to. In addition, for the energy consumption, it is only necessary to look at the positive area from the origin, so that the energy consumption can be easily grasped. In addition, since the minus potential energy is displayed on the minus coordinate side from the origin, only the energy consumption can be displayed in the plus area from the origin. Therefore, the visibility can be improved. In other words, in the past, all energy was displayed on the plus side from the origin, so the total energy change tended to become more intense, and at least the production energy was displayed on the minus side. Since this does not affect the total energy consumption on the side, the increase / decrease on the energy consumption side can be suppressed as compared with the conventional case, and the visibility can be improved.

FIG. 13 is a diagram showing another energy display example of the second embodiment. The kinetic energy when the moving body is traveling on a flat ground is positive when the moving body is accelerated, and is negative when the moving body is decelerated. Not limited to this, the detection value of the acceleration sensor may be used. For this reason, (a) kinetic energy (acceleration loss) p4 and running resistance p2 are consumed as energy consumption during acceleration. Then, with the coordinate origin (0) as the reference position, the kinetic energy (acceleration loss) p4 and the running resistance p2 are stacked and displayed in the positive direction. Also, (b) when traveling on a flat ground, only the traveling resistance p2 is displayed from the position of the origin. Then, (c) at the time of deceleration, the kinetic energy recovered by the deceleration is displayed from the origin (0) toward the minus direction. Further, the running resistance portion p2 is displayed from the origin (0) toward the plus direction. As described above, in the second embodiment, the origin (0) is always displayed as the reference position without shifting the position of the origin. Thereby, it can be easily grasped that the plus side from the origin position is the consumed energy and the minus side from the origin position is the recovered energy.

FIG. 14 is a diagram showing details of energy display according to the second embodiment. It is the example which displayed the display screen shown in FIG. 12 according to each item of the state of a moving body and energy consumption. The determination unit 104 determines an item of energy consumption to be displayed according to the state of the moving object, and outputs it to the display control unit 105. (A) In the case of constant running or deceleration on flat ground, the idling part p3 and the running resistance part p2, which are the energy consumed from the coordinate origin (0), are stacked and displayed in the horizontal positive direction in the graph. To do. (B) In the case of acceleration on a flat ground, the values are accumulated and displayed in the order of the idling amount p3, the running resistance amount p2, and the acceleration loss amount p4 from the origin of the coordinates. (C) In the case of acceleration traveling on an uphill, the position energy component p1, the idling component p3, the traveling resistance component p2, and the acceleration loss component p4 are accumulated and displayed in this order from the coordinate origin. (D) In the case of constant traveling or deceleration on an uphill, the position energy component p1, the idling component p3, and the traveling resistance component p2 are accumulated and displayed in this order from the coordinate origin.

On the other hand, in the case of a downhill, as described above, the position energy part p1 produced (recovered) is displayed in the minus direction from the origin (0). First, (e) In the case of acceleration on a downhill, the potential energy p1 is displayed in the minus direction from the origin. Further, in the plus direction from the origin, the idling component p3, the running resistance component p2, and the acceleration loss component p4 are stacked and displayed in this order. Similarly, (f) when decelerating downhill, the potential energy p1 is displayed in the minus direction from the origin. In this case, the idling component p3 and the running resistance component p2 are stacked and displayed in this order. As described above, in the positive area on the display screen, the energy for the actual consumption is displayed regardless of the state of the moving object (a) to (f).

As described above, the potential energy component can be either a positive or negative component in terms of energy consumption, depending on the state of the moving body. For this reason, in Example 2, energy consumption is accumulated and displayed from the origin to the plus side, while production (recovery) from the origin to the minus side is displayed.
To display the energy. As a result, it is possible to easily grasp how much energy is actually consumed when the moving body is on a downhill by displaying on the plus side on the display screen. In addition, it is possible to intuitively and easily grasp the fuel consumption structure (energy breakdown and fuel consumption composition) simply by looking at one display (bar graph).

Also, in the second embodiment, similarly to the first embodiment, an auxiliary display unit 701 (see FIG. 7) is provided, so that the origin position can be easily grasped. Further, the calculation unit 102 executes the process of FIG. 11 in real time (for example, every 1 msec). The calculation unit 102 calculates the average value of each factor of energy consumption per predetermined unit time (for example, 10 sec or 1 min). It is good also as a structure which calculates and displays the energy shown by said display example for every this predetermined unit time. Thereby, the transition of energy consumption can be displayed every predetermined unit time, and even if there is an energy fluctuation within this predetermined time unit, it can be absorbed and displayed. In particular, even when the energy consumption greatly fluctuates in a short time, the display can be prevented from fluctuating greatly, and the display can be easily viewed.

Furthermore, the energy display may be a curved graph display as shown in FIG. In addition, regarding the item of potential energy (or kinetic energy), energy is consumed or produced when the state of the moving body is up / down and acceleration / deceleration, so the displayed potential energy (or kinetic energy). For the item), the moving body may have different display colors for the up and down states (similarly, different display colors for acceleration / deceleration). By seeing this display color, it is possible to easily grasp whether the state of the moving body is up / down or acceleration / deceleration.

As described above, according to the second embodiment, the amount of plus energy consumption is displayed in the minus direction from the origin, and each factor of energy consumption is accumulated and displayed on the plus side from the origin. Thereby, when it is desired to know the current energy consumption of the mobile body, the energy amount actually consumed is displayed in the area on the plus side from the coordinate position of the origin (0). Thereby, even if the traveling state of the mobile body changes, the change in the display length of the entire energy consumption can be reduced, and the energy consumption amount during traveling can be easily understood.

The energy display method described in the present 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 Energy display apparatus 101 Acquisition part 102 Calculation part 103 Judgment part 104 Judgment part 105 Display control part 110 Display part

Claims

A calculating means for calculating energy consumption consumed by the operation of the moving body by factor;
Display means for displaying information on energy consumption for each of the calculated factors;
Determination means for determining whether the energy is produced or consumed for each energy by the factor,
The display means includes
When it is determined by the determining means that all the energy for each factor is consumed, the energy consumption is accumulated and displayed for each factor starting from a predetermined position,
When it is determined by the determination means that there is produced energy among the energy for each factor, a position that is shifted from the predetermined position by the amount of the produced energy in a direction opposite to the accumulated direction. An energy display device characterized in that other energy consumptions are accumulated and displayed as a starting point for each factor.
The energy display device according to claim 1, wherein the display means displays an energy amount of energy that can be produced from the energy by factor from the start point.
A judging means for judging whether the moving body is moving up or down the slope;
The said determination means determines whether the potential energy which is one of the energy according to the said factor is produced or consumed according to the determination result of the said determination means. Energy display device.
A determination means for determining whether the moving body is accelerating or decelerating;
The determination means determines whether the kinetic energy necessary for acceleration, which is one of the energy for each factor, is consumed or the kinetic energy is produced by deceleration according to the determination result of the determination means. The energy display device according to claim 1.
The determination means, when the mobile body travels in a predetermined section, determines whether accumulated energy necessary for traveling in the predetermined section is produced or consumed. 5. The energy display device according to any one of 4.
A calculating means for calculating energy consumption consumed by the operation of the moving body by factor;
Display means for displaying information on energy consumption for each of the calculated factors;
Determination means for determining whether the energy is produced or consumed for each energy by the factor,
The display means includes
When it is determined by the determining means that all the energy for each factor is consumed, the energy consumption is accumulated and displayed for each factor starting from a predetermined position,
When it is determined by the determination means that there is produced energy among the energy for each factor, the energy consumption is accumulated and displayed for each factor starting from the predetermined position for the consumed energy, and An energy display device, wherein the amount of energy produced is displayed in a direction opposite to the accumulated direction starting from the predetermined position with respect to produced energy.
The energy display device according to claim 6, wherein the display means displays an energy amount of energy that can be produced from the energy for each factor from the start point.
A judging means for judging whether the moving body is moving up or down the slope;
The said determination means determines whether the potential energy which is one of the said energy according to the factor is produced or consumed according to the determination result of the said determination means. Energy display device.
A determination means for determining whether the moving body is accelerating or decelerating;
The determination means determines whether the kinetic energy necessary for acceleration, which is one of the energy for each factor, is consumed or the kinetic energy is produced by deceleration according to the determination result of the determination means. The energy display device according to claim 6.
The determination means, when the mobile body travels in a predetermined section, determines whether accumulated energy necessary for traveling in the predetermined section is produced or consumed. The energy display device according to any one of 9.
In the energy display method of the energy display device that displays the energy consumed by the operation of the moving object,
A calculation step of calculating, by factor, energy consumption consumed by operation of the mobile body;
A display step of displaying information on energy consumption for each of the calculated factors;
A determination step for determining whether the energy is produced or consumed for each energy by the factor, and
The display step includes
When it is determined that the energy for each factor is consumed by the determination step, the energy consumption is accumulated and displayed for each factor starting from a predetermined position,
When it is determined by the determination step that there is produced energy among factors-specific energy, a position that is shifted from the predetermined position by the amount of produced energy in a direction opposite to the accumulated direction. An energy display method characterized by accumulating and displaying other energy consumptions by factor as a starting point.
In the energy display method of the energy display device that displays the energy consumed by the operation of the moving object,
A calculation step of calculating, by factor, energy consumption consumed by operation of the mobile body;
A display step of displaying information on energy consumption for each of the calculated factors;
A determination step for determining whether the energy is produced or consumed for each energy by the factor, and
The display step includes
When it is determined that the energy for each factor is consumed by the determination step, the energy consumption is accumulated and displayed for each factor starting from a predetermined position,
When it is determined by the determination step that there is produced energy among the energy for each factor, the energy consumption is accumulated and displayed for each factor starting from the predetermined position for the consumed energy, and An energy display method, wherein the amount of energy produced is displayed in a direction opposite to the accumulated direction starting from the predetermined position with respect to produced energy.
An energy display program for causing a computer to execute the energy display method according to claim 11 or 12.
A computer-readable recording medium on which the energy display program according to claim 13 is recorded.