JP2007256158A - Fuel consumption indicator - Google Patents

Fuel consumption indicator Download PDF

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Publication number
JP2007256158A
JP2007256158A JP2006082810A JP2006082810A JP2007256158A JP 2007256158 A JP2007256158 A JP 2007256158A JP 2006082810 A JP2006082810 A JP 2006082810A JP 2006082810 A JP2006082810 A JP 2006082810A JP 2007256158 A JP2007256158 A JP 2007256158A
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Prior art keywords
fuel consumption
means
light
display
display device
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JP2006082810A
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Japanese (ja)
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JP5217103B2 (en
Inventor
Nobuyuki Suganuma
伸志 菅沼
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Toyota Motor Corp
トヨタ自動車株式会社
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60LPROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2250/00Driver interactions
    • B60L2250/16Driver interactions by display

Abstract

<P>PROBLEM TO BE SOLVED: To provide a fuel consumption indicator, without having to make the driver gaze steadily on the display of a moving object. <P>SOLUTION: The fuel consumption indicator 1 comprises a calculation means 100 for calculating information, concerning fuel consumption from a travelling distance and a fuel consumption amount of the moving object; a display means 11 for displaying information concerning the fuel consumption; a light-emitting means 12 arranged front of a driver seat of the moving object; and a light-emitting control means 102 for controlling light-emission of the light-emitting means 12, based on the information concerning the fuel consumption. The light-emitting control means 102 controls the brightness and color tone of the light-emitting means 12, based on the information concerning the fuel consumption. The light-emitting means 12 is constituted of a part of measuring instruments of the moving body. Information concerning the fuel consumption preferably is, preferably, instant fuel consumption or average fuel consumption. Furthermore, the display means 11 and the light-emitting means 12 synchronizes at least one of the brightness and color tone. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a fuel consumption display device installed on a moving body, and more particularly to a fuel consumption display device that allows a driver of a moving body to recognize a fuel consumption state without paying attention to information on the fuel consumption state.

  Conventionally, an instantaneous fuel consumption calculating means for calculating an instantaneous fuel consumption based on a travel distance and fuel consumption within a first predetermined time, and a travel distance and fuel within a second predetermined time longer than the first predetermined time. A vehicle fuel consumption display device comprising: target fuel consumption calculation means for calculating a target fuel consumption based on consumption, and a display for displaying the instantaneous fuel consumption and the target fuel consumption with a common index is known. (For example, refer to Patent Document 1).

The vehicular fuel consumption display device displays the instantaneous fuel consumption and the target fuel consumption on the display at the same time on a bar graph so that the driver can determine whether or not the current instantaneous fuel consumption is in an appropriate state.
JP 2000-205925 A

  However, in the vehicle fuel consumption display device described in Patent Document 1, it is difficult for the driver to determine whether or not the current instantaneous fuel consumption is in an appropriate state unless the driver watches the indicator. The effect may be insufficient to make the driver aware of fuel consumption and promote eco-driving (referring to driving that optimizes fuel consumption to reduce automobile emissions).

  In view of such a situation, an object of the present invention is to provide a fuel consumption display device that allows a driver of a moving body to recognize a fuel consumption state without having to pay attention to information on the fuel consumption state.

  In order to achieve the above object, a fuel consumption display device according to a first aspect of the present invention is a calculation means for calculating information on fuel consumption from the travel distance and fuel consumption of a moving body, and a display means for displaying information on the fuel consumption. And a light emission means disposed in front of the driver's seat of the moving body, and a light emission control means for controlling the light emission of the light emission means based on the information related to the fuel consumption.

  Further, the second invention is a fuel consumption display device according to the first invention, wherein the light emission control means controls at least one of luminance and color tone of the light emission means based on the information on the fuel consumption. It is characterized by.

  According to a third aspect of the invention, there is provided a fuel consumption display device according to the first or second aspect of the invention, wherein the light emitting means is a part of a meter of the moving body.

  According to a fourth aspect of the present invention, there is provided a fuel consumption display device according to any one of the first to third aspects, wherein the information on the fuel consumption is instantaneous fuel consumption or average fuel consumption.

  The fifth invention is a fuel consumption display device according to any one of the first to fourth inventions, wherein the display means and the light emitting means synchronize at least one of luminance and color tone. To do.

  With the above-described means, the present invention can provide a fuel consumption display device that allows a driver of a moving body to recognize a fuel consumption state without having to pay attention to information on the fuel consumption state.

  Hereinafter, the best mode for carrying out the present invention will be described with reference to the drawings.

  FIG. 1 is a block diagram showing a basic configuration of a fuel consumption display device according to the present invention. The fuel consumption display device 1 includes a control unit 10, a display unit 11 and a light emitting unit 12, and includes a vehicle speed sensor 2 and an engine controller 3. Connected.

  The vehicle speed sensor 2 is a sensor that measures the speed of the vehicle. For example, an MR (Magnetic Resistance) element reads a change in a magnetic field caused by a magnet attached to each wheel and rotating with each wheel as a magnetic resistance, and this is converted into a rotation speed. By extracting as a proportional pulse signal, the rotational speed of the wheel and the speed of the vehicle are detected, and data relating to the rotational speed of the wheel and the speed of the vehicle are transmitted to the control unit 10 of the fuel consumption control device 1.

  The engine controller 3 is a device that controls the engine by controlling an ignition device, a fuel injection device, and the like, and transmits data related to ignition timing, fuel injection amount, and the like to the control unit 10 of the fuel consumption control device 1.

  The control unit 10 is a computer having a CPU (Central Processing Unit), a RAM (Random Access Memory), an NVRAM (Non-Volatile RAM), a ROM (Read Only Memory), and the like. And a light emission control means 102.

  The fuel consumption calculation means 100 includes a travel distance per predetermined time (for example, 0.1 second) obtained by multiplying a wheel rotational speed received from the vehicle speed sensor 2 by a predetermined coefficient (wheel circumference, etc.), an engine controller 3 is a means for calculating the instantaneous fuel consumption from the fuel injection amount per predetermined time (for example, 0.1 second) obtained from the data relating to the ignition timing (cycle) received from 3 and the fuel injection amount.

  Here, “instantaneous fuel consumption” refers to fuel consumption in a predetermined short time, and the predetermined short time is a time that is sufficiently short to change the display value from moment to moment according to the driving state and accelerator work. For example, 2 seconds.

  Further, the fuel consumption calculation means 100 calculates an average fuel consumption for a predetermined time, an average fuel consumption between reset and reset, an average fuel consumption between refueling, or an average fuel consumption after starting based on the instantaneous fuel consumption.

  “Average fuel consumption for a predetermined time” is an average value of instantaneous fuel consumption per hour such as 30 minutes and 1 hour, and “Average fuel consumption between reset and reset” is instantaneous fuel consumption in a period from pressing the reset button to pressing the reset button again. Is the average value of instantaneous fuel consumption during the period from refueling to the next refueling, and "average fuel efficiency after start" is the period from the start of the engine to the present. The average value of instantaneous fuel consumption is automatically calculated based on signals from a timer, a reset button, a filler cover, an ignition switch, and the like.

  The fuel consumption display control means 101 is a means for displaying the fuel consumption state on the display means 11 (for example, a liquid crystal display). For example, the fuel consumption display state is displayed on the screen by digital display, analog display, or bar graph display, and the vehicle speed sensor 2 Depending on the instantaneous fuel consumption and average fuel consumption values calculated by the fuel consumption calculation means 100 based on the signal from the engine controller 3, the brightness or color tone of a predetermined image on the entire liquid crystal display or the liquid crystal display is changed, or a stepped bar The fuel consumption state is displayed while changing the number of display stages of the graph.

  The light emission control means 102 is a means for controlling the light emission in the light emission means 12, for example, according to the instantaneous fuel consumption and average fuel consumption values calculated by the fuel consumption calculation means 100 based on signals from the vehicle speed sensor 2 and the engine controller 3. The brightness and color tone of the light emitting means are changed.

  The light emission control means 102 is preferably synchronized with a change in luminance or color tone of the display means 11 by the fuel consumption display control means 101 or a change in the stepped bar graph (change in the number of display steps). And change the color tone. The driver can grasp the rough fuel consumption state by the light emitting means 12, and the driver can grasp the detailed fuel consumption state by the display means 11 in cooperation with the light emitting means 12, thereby facilitating the grasp of the fuel consumption state by the driver. Because.

  The fuel consumption calculation means 100, the fuel consumption display control means 101, and the light emission control means 102 are programs stored in the NVRAM of the control unit 10, and the fuel consumption display device 1 expands these programs in the RAM of the control unit 10. The CPU executes these means. Note that these means may be devices composed of electronic circuits.

  The display unit 11 is a device for displaying a fuel consumption state, and is, for example, a liquid crystal display or an organic EL (ElectroLuminescence) display, and may be either a monochrome display or a color display. Moreover, the apparatus which displays a fuel consumption state using LED (Light Emitting Diode) may be sufficient, or an analog pointer type | mold display may be sufficient.

  The light emitting means 12 is a means for emitting light, for example, a lighting device that is formed of a synthetic resin such as acrylic or polycarbonate, glass, etc., and has a single color LED on the inside or the surface, and can change the brightness. Alternatively, there is an illuminating device that is configured with red, green, and blue three-color LEDs inside and on the surface and can change the color tone.

  The light emitting means 12 has, for example, a linear shape, a circular shape, an elliptical shape, a rectangular shape, an annular shape, an elliptical shape, a rectangular shape, or a complicated shape with a sophisticated design. In order to allow the driver to recognize the light emitted from the light emitting means 12 during driving with a part of the field of view, an independent component (for example, LED) on the instrument panel, dashboard, sun visor, etc. May be installed as Alternatively, the light emitting means 12 may emit light on a member itself such as a steering wheel, a shift knob, a winker lever, or the surface thereof, or may be a room light. Furthermore, you may be comprised from the several light-emitting body which combined these.

  FIG. 2 is a schematic view of an instrument panel P on which the display unit 11 and the light emitting unit 12 are arranged. The instrument panel P includes a fuel fuel gauge M1, a speedometer M2, a tachometer M3, and a water temperature meter M4. A display means 11 is arranged at the center of the tachometer M3, and the outside of the speedometer M2 and the tachometer M3. An annular light emitting means 12 is arranged on the frame.

  FIG. 3 shows an example of an image displayed on the display means (liquid crystal display) 11. A symbol image G representing the shape of the light emitting means 12 is displayed at the upper left part of the screen, and a bar graph B showing the fuel consumption state at the center of the screen. Is displayed. Note that the symbol image G may be omitted. This is because it may be impossible to display due to the restrictions of the display means 11, and in such a case, it is necessary to simplify the image displayed on the display means 11 as much as possible.

  The bar graph B extends stepwise from left to right, and scales “5 Km / L”, “10 Km / L”, “15 Km / L” and “20 Km / L” are displayed at the bottom, It displays that the fuel consumption is about 12.5 Km / L. The bar graph B is updated at a predetermined interval (for example, 1 second) and expands and contracts to the left and right.

  The liquid crystal display 11 may be either monochrome display or color display. In the case of monochrome display, the height of the stairs of the bar graph B (the number of displayed stairs) is changed, for example, the fuel consumption is 5 km / L. The number of displayed stairs is increased every time it rises, or the brightness of the entire bar graph B is changed according to the fuel economy state. For example, the brightness is raised every time the fuel economy rises by 5 km / L. In the case of color display, the liquid crystal display 11 changes the brightness and color tone of the entire bar graph B in accordance with the fuel consumption state. For example, every time the fuel consumption increases by 5 km / L, the brightness of red, green, and blue is increased. And change the color tone.

  FIG. 4 is a diagram illustrating an example of the monochrome display liquid crystal display 11 that changes the luminance in accordance with the fuel consumption state. FIG. 4A illustrates a case where the fuel consumption is less than 5 Km / L, and FIG. When the fuel consumption is 5 Km / L or more and less than 10 Km / L, FIG. 4C shows the case where the fuel consumption is 10 Km / L or more and less than 15 Km / L, and FIG. 4D shows the case where the fuel consumption is 15 Km / L or more. Respectively.

  When the fuel consumption is less than 5 km / L, the fuel consumption display device 1 displays the bar graph B (only the stepped outer frame is displayed) and the light emitting means by the fuel consumption display control means 101 as shown in FIG. The symbol image G imitating 12 is controlled to the lowest luminance state, and in synchronization therewith, the light emission control means 102 controls the luminance of the light emission means 12 to the lowest state or not to emit light.

  Alternatively, the fuel consumption display device 1 does not change the luminance of the bar graph B and the symbol image G, but synchronizes with the number of steps of the bar graph B (zero step state) and adjusts the luminance of the light emitting unit 12 by the light emission control unit 102. You may control to the lowest state or the state which does not light-emit.

  When the fuel consumption is 5 Km / L or more and less than 10 Km / L, the fuel consumption display device 1 displays the bar graph B and the symbol image G by the fuel consumption display control means 101 as shown in FIG. ), The brightness of the light emission means 12 is controlled by the light emission control means 102 to be higher than the case where the fuel consumption is less than 5 km / L.

  Alternatively, the fuel consumption display device 1 does not change the luminance of the bar graph B and the symbol image G, but synchronizes with the number of steps of the bar graph B (the state of one step) and adjusts the luminance of the light emitting unit 12 by the light emission control unit 102. You may control to a higher state than the case where a fuel consumption is less than 5 km / L.

  Similarly, when the fuel consumption is 10 Km / L or more and less than 15 Km / L, and when the fuel consumption is 15 Km / L or more, the fuel consumption display device 1 uses the fuel consumption display control means 101 to increase the brightness of the bar graph B and the symbol image G. The light emission control means 102 controls the luminance of the light emitting means 12 so as to increase stepwise in synchronism with the control.

  Alternatively, the fuel consumption display device 1 does not change the brightness of the bar graph B and the symbol image G, and changes the number of steps of the bar graph B in two steps and three steps, and synchronizes with it, thereby controlling the light emission. The brightness of the light emitting means 12 may be controlled to increase stepwise by the means 102.

  The fuel consumption display device 1 may control the bar graph B and the symbol image G to have different luminance as long as a certain regularity is maintained. The luminance and light emission of the bar graph B and the symbol image G may be controlled. You may control so that the change rate with the brightness | luminance of the means 12 may each differ. Similarly, the fuel consumption display device 1 may fix the brightness of the bar graph B and change only the brightness of the symbol image G. The light emission means 12 may be used while fixing the brightness of the bar graph B and the symbol image G. You may make it change the brightness | luminance of.

  With this configuration, the fuel consumption display device 1 allows the driver to catch the light emitted by the light emitting means 12 in a part of the field of view without causing the driver to watch the state of the bar graph B displayed on the liquid crystal display 11, and change the luminance thereof. This makes it possible to recognize the fuel consumption state.

  Further, the fuel consumption display device 1 allows the driver to capture the light emitted by the light emitting means 12 in a part of the field of view and recognize a rough fuel consumption state based on the change in the luminance. By gazing at 11, it is possible to confirm a more exact fuel consumption state on the liquid crystal display 11.

  Further, the fuel consumption display device 1 changes the luminance of the light emitting means 12 that exists three-dimensionally as an independent component in accordance with the fuel consumption state, so that one of the flat liquid crystal display 11 that displays many other images while switching. Rather than changing the brightness of the image of the part in accordance with the fuel consumption state, the fuel consumption state can be reliably communicated to the driver.

  Further, the light emitting means 12 formed of synthetic resin or the like has a higher degree of design freedom than the liquid crystal display 11 and can be easily removed and replaced. Can be provided easily.

  Further, since the fuel consumption display device 1 makes the driver recognize the fuel consumption state based on a change in the brightness of light emitted from the light emitting means 12, the driver can easily make the driver aware of the fuel consumption and promote eco-driving.

  Moreover, since the fuel consumption display device 1 displays comfortable light on the display unit 11 and the light emitting unit 12 or emits light when the fuel consumption is in a favorable state, it is possible to promote eco-driving by the driver.

  Next, another embodiment of the fuel consumption display device 1 will be described with reference to FIG.

  FIG. 5 is a diagram illustrating an example of a color display liquid crystal display 11 that changes the color tone according to the fuel consumption state. FIG. 5A illustrates a case where the fuel consumption is less than 5 Km / L, and FIG. When the fuel consumption is 5 Km / L or more and less than 10 Km / L, FIG. 5C shows the case where the fuel consumption is 10 Km / L or more and less than 15 Km / L, and FIG. 5D shows the case where the fuel consumption is 15 Km / L or more. Respectively.

  When the fuel consumption is less than 5 km / L, the fuel consumption display device 1 displays the bar graph B (only the stepped outer frame is displayed) and the light emitting means by the fuel consumption display control means 101 as shown in FIG. The symbol image G imitating the image 12 is controlled to a predetermined color tone (color tone, brightness, intensity, etc., in this case, for example, red). The color tone of the light emitting means 12 is controlled to be the same as the bar graph B and the symbol image G in the liquid crystal display 11.

  Further, when the fuel consumption is 5 km / L or more and less than 10 km / L, the fuel consumption display device 1 displays the bar graph B and the symbol image G by the fuel consumption display control means 101 as shown in FIG. ), The color tone of the light emitting means 12 is controlled to yellow by the light emission control means 102.

  Similarly, when the fuel consumption is 10 Km / L or more and less than 15 Km / L and when the fuel consumption is 15 Km / L or more, the fuel consumption display device 1 uses the fuel consumption display control means 101 to change the color tone of the bar graph B and the symbol image G. The light emission control means 102 changes the color tone of the light emitting means 12 step by step in a manner such as green or blue, in synchronism with the control (for example, changing in order of green and blue). Control. Note that the color tone may be changed steplessly by gradation.

  Further, the fuel consumption display device 1 may control the bar graph B and the symbol image G to have different color tones and brightness as long as a certain regularity is maintained. Alternatively, the brightness and the color tone or brightness of the light emitting means 12 may be controlled to be different. Similarly, the fuel consumption display device 1 may fix the color tone and luminance of the bar graph B and change only the color tone and luminance of the symbol image G, or change only the luminance without changing the color tone of the light emitting means 12. You may make it make it. Further, the fuel consumption display device 1 may change the color tone and luminance of the light emitting means 12 while fixing the color tone and luminance of the bar graph B and the symbol image G.

  Further, the color tone and brightness of the light displayed or emitted by the display means 11 and the light emitting means 12 are made comfortable for the driver when the fuel efficiency is good, and the driver adjusts the color tone according to his / her preference. And brightness may be set.

  With this configuration, the fuel consumption display device 1 allows the driver to capture the light emitted by the light emitting means 12 in a part of the field of view without causing the driver to pay attention to the state of the bar graph B displayed on the liquid crystal display 11, and the color tone and luminance The fuel consumption state can be recognized more easily due to the change in.

  Further, since the fuel consumption display device 1 makes the driver recognize the fuel consumption state based on changes in the color tone and brightness of the light emitted by the light emitting means 12, the driver can easily make the driver aware of the fuel consumption and promote eco-driving.

  Moreover, since the fuel consumption display device 1 displays comfortable light on the display unit 11 and the light emitting unit 12 or emits light when the fuel consumption is in a favorable state, it is possible to promote eco-driving by the driver.

  The preferred embodiments of the present invention have been described in detail above. However, the present invention is not limited to the above-described embodiments, and various modifications and substitutions can be made to the above-described embodiments without departing from the scope of the present invention. Can be added.

  For example, in the above-described embodiment, a more detailed fuel consumption state is displayed on the liquid crystal display 11 while expressing the fuel consumption state by the light emitting means 12. The liquid crystal display 11 may be a pointer type display such as an analog meter. Good.

It is a block diagram which shows the basic composition of a fuel consumption display apparatus. It is the schematic of the instrument panel by which a display means and a light emission means are arrange | positioned. It is a figure which shows the example of the image which shows the fuel consumption state displayed on a display means. It is a figure which shows the example of the monochrome display means to change a brightness | luminance according to a fuel consumption state. It is a figure which shows the example of the color display means to change a color tone according to a fuel consumption state.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Fuel consumption display apparatus 2 Vehicle speed sensor 3 Engine controller 10 Control part 11 Display means 12 Light emission means 100 Fuel consumption calculation means 101 Fuel consumption display control means 102 Light emission control means B Bar graph G Symbol image M1 Fuel remaining amount meter M2 Speedometer M3 Tachometer M4 Water temperature gauge P Instrument panel

Claims (5)

  1. A calculation means for calculating information on fuel consumption from the travel distance and fuel consumption of the moving body;
    Display means for displaying information on the fuel consumption;
    Light emitting means disposed in front of the driver's seat of the moving body;
    Light emission control means for controlling light emission of the light emission means based on the information on the fuel consumption;
    A fuel consumption display device comprising:
  2. The light emission control means controls at least one of luminance and color tone of the light emission means based on the information on the fuel consumption;
    The fuel consumption display device according to claim 1.
  3. The light emitting means is a part of the instrument of the moving body,
    The fuel consumption display device according to claim 1 or 2, wherein
  4. The information on the fuel consumption is instantaneous fuel consumption or average fuel consumption.
    The fuel consumption display device according to any one of claims 1 to 3, wherein:
  5. The display means and the light emitting means synchronize at least one of luminance and color tone,
    The fuel consumption display device according to any one of claims 1 to 4, wherein:
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JP2009149286A (en) * 2007-12-18 2009-07-09 Hyundai Motor Co Ltd Economical operation guide system
WO2010013617A1 (en) 2008-07-31 2010-02-04 富士通テン株式会社 Low fuel consumption driving diagnostic device, low fuel consumption driving diagnostic system, controller for electrical drive device, low fuel consumption driving scoring device, and low fuel consumption driving diagnostic method
WO2010035441A1 (en) 2008-09-29 2010-04-01 本田技研工業株式会社 Device for instructing driver to perform drive operation for enhancing fuel efficiency
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US8660785B2 (en) 2009-03-19 2014-02-25 Honda Motor Co., Ltd. Method and apparatus for diagnosing driving operation
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