JP2010266288A - Vehicle-mounted display unit - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vehicle-mounted display unit which has the advantages of an analog meter and can properly impart bodily sensation of changes in vehicle states typified by the sense of speed. <P>SOLUTION: The vehicle meter unit 1 (vehicle-mounted display unit) includes a display 10 for displaying a meter image and a meter ECU 20 (an image display control means). The meter ECU 20 allows the display 10 to display the meter image of a speedometer 110S (an analog meter), having numbers 111S and ticks 112S as a guide for visually identify a pointed value of vehicle speed (a physical quantity on a vehicle condition), and a pointer 114S (a pointing mark) pointing a pointed value. The meter ECU 20 allows the display 10 to display the entire image of the speedometer 110S, in which a number 111S and a tick 112S which are closer to the pointed value pointed by the pointer 114S, are given a larger display magnification rate, while a number 111S and a tick 112S which are located farther from the pointed value are given a smaller display magnification rate. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a vehicle-mounted display device, and more particularly to a vehicle-mounted display device that displays an analog meter image on a display.

  As this type of vehicle-mounted display device, there is known a device that displays a pointer that is a part of a speedometer, which is an analog meter, and a scale and a number close to the pointer on a display (for example, the following patent document). 1). In the in-vehicle display device described in Patent Document 1, since the entire image of the speedometer is not displayed, the speedometer can be downsized (the display can be downsized), and the change direction and degree of change in the vehicle speed can be visually recognized. It can be provided with the advantages of an analog meter that it can.

JP 2008-265512 A

  However, in the in-vehicle display device described in Patent Document 1, the miniaturization of the speedometer is regarded as the most important by displaying only the pointer that is a part of the speedometer, the scale close to the pointer, and the numbers. . For this reason, the direction and degree of change of the vehicle speed in the current speed range viewed from the entire speed range within the range in which the vehicle speed changes cannot be visually recognized, and it cannot be said that it is sufficient to experience a sense of speed. It was.

  An object of the present invention is to provide an in-vehicle display device that has the advantages of an analog meter and that allows a vehicle state change represented by a sense of speed to be experienced well.

Means for Solving the Problems and Effects of the Invention

  In order to solve the above problems, an in-vehicle display device according to the present invention includes a display that displays a meter image, and a number and a scale that serve as a guideline for visually recognizing a physical quantity related to the vehicle state as an indicated value in a predetermined unit as the meter image Image display control means for displaying on the display a meter image of an analog meter having an instruction mark for instructing the instruction value, and the image display control means has a number and scale close to the instruction value indicated by the instruction mark. The display image is displayed as a whole image of the analog meter in which the display magnification is larger and the display magnification is smaller as the number and scale are farther from the indicated value. In this case, it is preferable that the instruction mark includes, for example, a figure indicating a number or a scale, a figure surrounding the number or the scale, or a shaded pattern covering the number or the scale. Further, it is preferable that the entire image of the analog meter displays, for example, the vehicle speed, the engine speed, or the remaining battery level.

  In this in-vehicle display device, the whole image of the analog meter is such that the display magnification is larger as the number and scale closer to the indicated value indicated by the instruction mark, and the display magnification is smaller as the number and scale farther from the indicated value. It appears on the display.

  Thus, if the analog meter is applied to, for example, a speedometer that displays the vehicle speed, the direction and degree of change of the vehicle speed in the current speed region viewed from the entire speed region displayed can be visually confirmed. As a result, the sense of speed can be experienced well. If the analog meter is applied to, for example, a tachometer that displays the engine speed, the direction and degree of change in the speed in the current speed range as viewed from the entire displayed speed range can be visually confirmed. can do. Furthermore, if the analog meter is applied to, for example, a power meter (representing the total power output of an electric vehicle or the like and the regenerative state) that displays the remaining battery power, etc., it is viewed from the entire power range displayed. The direction and degree of change of power in the current power range can be visually recognized.

  In carrying out the present invention, the image display control means includes storage means for preliminarily storing image data of the entire image of the analog meter respectively associated with a plurality of instruction values having different sizes, and the image display control means responds to changes in physical quantities. It is preferable that the image data associated with the instruction value is sequentially read out from the storage means and the entire image of the analog meter is displayed on the display based on the image data.

  The image data of the entire image of the analog meter is stored in advance in the storage means in association with a plurality of instruction values of different sizes, and the image data associated with the instruction values is sequentially read according to changes in physical quantities. Thus, the processing load of the in-vehicle display device can be reduced when the analog meter displays an image.

  In addition, the entire image of the analog meter is formed such that the numbers and scales are arranged along the arc-shaped instruction locus, the instruction mark is visually recognized as moving along the instruction locus, and the whole is formed at the same display magnification. With the whole image of the analog meter being used as the original image, the number and scale closer to the indicated value indicated by the indication mark have a larger display magnification, and the number and scale farther from the indicated value have a smaller display magnification. The original image may be corrected.

  In general, analog meters are arranged such that numbers and scales are arranged along an arc-shaped instruction locus, the instruction mark is visually recognized so as to move along the instruction locus, and the whole is formed with the same display magnification. Is. Using the whole image of such an analog meter as an original image, the display magnification is larger as the number and scale closer to the indicated value indicated by the instruction mark, and the display magnification is smaller as the number and scale farther from the indicated value. When the original image is corrected, it is an analog meter image that looks like other numbers and scales with the numerical value close to the indicated value and the scale side as a viewpoint, for example, an oval shape or a crushed circular shape as a whole Can be obtained. Thereby, the whole image of an analog type meter can be displayed, suppressing the enlargement of a display.

  The display magnification may be set to a plurality of levels so that adjacent numbers, adjacent scales, and numbers and scales do not overlap. According to this, even when image correction is performed, the readability of the instruction value can be ensured, and the visibility as an analog meter can be maintained and improved.

The schematic diagram of the meter unit for vehicles to which the vehicle-mounted display apparatus of this invention is applied. The block diagram which shows the electrical constitution of the meter unit for vehicles of FIG. The flowchart which shows the meter drawing program which concerns on Examples 1-3 of this invention and is performed by meter ECU of FIG. Explanatory drawing which shows the original image of a speedometer. The front view of the speedometer which concerns on Example 1 of this invention. The front view of the speedometer which concerns on Example 1 of this invention. The front view of the speedometer which concerns on Example 1 of this invention. The front view of the speedometer which concerns on Example 2 of this invention. The front view of the speedometer which concerns on Example 2 of this invention. The front view of the speedometer which concerns on Example 2 of this invention. The front view of the speedometer which concerns on Example 2 of this invention. The front view of the battery residual amount meter which concerns on Example 3 of this invention. The front view of the battery residual amount meter which concerns on Example 3 of this invention. The front view of the battery residual amount meter which concerns on Example 3 of this invention. The front view of the speedometer which concerns on the modification of this invention. The flowchart which concerns on Example 4 of this invention and shows the meter drawing program performed by meter ECU of FIG.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a schematic diagram of a vehicle meter unit 1 to which an in-vehicle display device of the present invention is applied. The vehicle meter unit 1 is arranged to face a driver's seat of an automobile (vehicle) and is configured to collectively display a plurality of meter images on the display 10 in a form in which the meter images are gathered in a predetermined layout. .

  The display 10 is a well-known display having a color liquid crystal panel (LCD) 11 and a backlight module 12 (see FIG. 2), and display areas D1, D2, and D3 of the image are predetermined according to the type of meter image. It has been. Specifically, a speedometer indicating an indication value of the vehicle speed that is one of the physical quantities related to the vehicle state is displayed in the display area D1. In the display area D2, a tachometer indicating an instruction value of the engine speed is displayed for a gasoline vehicle, and a power meter indicating a total output of power and an instruction value for a regenerative state is displayed for a hybrid vehicle or an electric vehicle. . In the display area D3, a gear position meter, an average fuel consumption meter, a remaining fuel meter, a water temperature meter, and the like are displayed.

  FIG. 2 is a block diagram illustrating an example of an electrical configuration of the vehicle meter unit 1. The main part of this configuration is the meter ECU 20 that controls the main control of meter image display. The main part of the meter ECU 20 includes a microcomputer in which a CPU 21, a ROM 22, a RAM 23, a drawing circuit (drawing LSI) 24, and an input / output unit (I / O) 25 are connected via an internal bus. In addition to the image display program such as the meter drawing program shown in FIG. 3, the ROM 22 stores graphic data necessary for drawing each meter displayed in the display area D3.

  In the RAM 23 (storage means), image (drawing) data of the entire image of each meter displayed in the display areas D1 and D2 is stored in advance. This image data will be described later.

  The meter ECU 20 is connected to other ECUs such as the body system ECU 30 via a serial communication bus 50 via a communication interface (I / F) 26, and acquires various information (parameters) representing physical quantities related to the vehicle state. That is, the body system ECU 30 is connected with a group of sensors 40 for acquiring vehicle state information to be displayed on the meter. Specifically, a vehicle speed sensor 41, an engine speed detection unit 42, a coolant temperature sensor 43, a fuel remaining amount sensor 44, an average fuel consumption calculation unit 45, a gear position detection unit 46, and the like.

  The meter ECU 20 acquires vehicle state information from the sensor group 40 via the communication bus 50, and displays the meter image of the analog meter reflecting each indication value in any of the display areas D1 to D3 of the display 10. . Specifically, in FIG. 2, the detection value of the vehicle speed sensor 41 is the speedometer 110S (see FIG. 5), the detection value of the engine speed detection unit 42 is the tachometer, the detection value of the water temperature sensor 43 is the water temperature meter, The detection value of the fuel remaining amount sensor 44 is reflected in the fuel remaining amount meter, the fuel consumption calculation value of the average fuel consumption calculation unit 45 is reflected in the average fuel consumption meter, and the detection value of the gear position detection unit 46 is reflected in the gear position meter.

  In this case, the CPU 21 of the meter ECU 20 reads out the image data corresponding to the detected values of the vehicle speed sensor 41 and the engine speed detection unit 42 from the RAM 23, and stores the graphic memory in the drawing circuit (drawing LSI) 24 based on the image data. 27, a meter image is created and displayed on the display areas D1 and D2 of the display 10. Further, the CPU 21 causes the drawing circuit 24 to create drawing data of the meter reflecting the instruction values corresponding to the detection values of the water temperature sensor 43, the remaining fuel amount sensor 44, the average fuel consumption calculation unit 45, and the gear position detection unit 46. The meter image is synthesized on the graphic memory 27 and displayed on the display area D3 of the display 10. The meter ECU 20 corresponds to the image display control means of the present invention.

  Among the various meter images, for the speedometer 110S, for example, meter images as shown in FIGS. 5 to 7 are displayed. Each of the speedometers 110S is created by using the speedometer 100S shown in FIG. 4 as an original image and correcting the original image. Here, the speedometer 100S that is an original image is arranged with a numeral 101S and a scale 102S that serve as a guideline for visually recognizing the indication value of the vehicle speed along an arc-shaped instruction locus 103S indicated by a broken line in the drawing, and the numeral 101S or It is an entire image of an analog speedometer that is visually recognized so that the pointer 104S (instruction mark) pointing to the scale 102S moves along the instruction locus 103S and is formed at the same display magnification.

  The speedometer 110S illustrated in FIG. 5 illustrates a meter image when the indication value of the vehicle speed is, for example, 26 km / h (predetermined unit: km / h). This speedometer 110S uses the speedometer 100S shown in FIG. 4 as an original image, and the display 101G and the scale 102S, which are closer to the indicated value of 26km / h, have a larger display magnification, and the number 101S and the scale farther from the indicated value of 26km / h. The original image is corrected so that the display magnification becomes smaller as 102S.

  That is, in the speedometer 100S shown in FIG. 4, the display magnification of the area A1 having a predetermined shape and size centered on the predetermined reference position A0 on the extension line of the pointer 104S is set to M1, and the speed per hour is the indicated value. The display magnifications M2, M3, M4, and M5 that gradually decrease in the order of regions A2, A3, A4, and A5 that are farther from 26 km are set (M1> M2> M3> M4> M5).

  Accordingly, the speedometer 110S shown in FIG. 5 has a scale 111S (20, 30) close to the indicated value 26km / h larger than the distant number 111S (100 to 180), and a scale close to the indicated value 26km / h. 112S is longer than the distant scale 112S, the interval between the scales 112S is wide, and the pointer 114S gradually becomes thinner from the front end to the base end (center of the meter), so that the entire image of the speedometer 100S as the original image is obtained. The meter image is as if the instruction value, 26 km / h, was viewed from the viewpoint.

  In the speedometer 100S shown in FIG. 4, the scale is scaled in units of 1 km / h from 0 km / h to 180 km / h. However, in the speedometer 110S shown in FIG. The scale is appropriately corrected so that the scale is oscillated in units of 10 km / h from the range of 25 km, that is, from 0 km / h to about 50 km / h, and from 60 km / h to 180 km / h outside the range. Further, a correction is made as if the scale disappears as it approaches both ends of 0 km / h that is the starting end and 50 km / h that is the end within the range.

  Similarly, the speedometer 110S shown in FIG. 6 shows a meter image when the indicated value of the vehicle speed is, for example, 85 km (km / h), and the speedometer 110S shown in FIG. 7 shows that the indicated value of the vehicle speed is, for example, 123 km / hour. The meter image when it is (km / h) is illustrated. In this way, the speedometer 110S has a plurality of instruction values of different sizes (for example, an instruction value is set for every 1/3 km / h, and an instruction value of about 540 is set within a range from 0 km / h to 180 km / h). An image corrected based on the speedometer 100S as an original image is prepared in advance so as to correspond to each of the image data, and each image data is stored in the RAM 23 in advance. As for the tachometer indicating the engine speed, image data representing the entire image of the tachometer corresponding to each of a plurality of indicated values having different sizes is stored in the RAM 23 in advance, as with the speedometer 110S described above.

  Next, the operation of the first embodiment configured as described above will be described. When the ignition switch is turned on, the meter ECU 20 repeatedly executes the meter drawing program shown in FIG. 3 every predetermined short time. In this meter drawing program, when the engine is started, the meter ECU 20 inputs the detected value of the vehicle speed acquired from the body system ECU 30 (S1). Next, the image data of the speedometer 110S corresponding to the indication value of the vehicle speed is read from the RAM 23, and an image of the speedometer 110S is created based on the read image data (S2) and output to the display 10 (S3). Similarly, the meter ECU 20 reads out tachometer image data corresponding to the indicated value of the engine speed from the RAM 23, creates a tachometer image based on the read image data, and outputs the tachometer image to the display 10.

  As is clear from the above description, in the first embodiment, as the vehicle speed changes, the numbers 111S and scales 112S that are closer to the indicated value have a larger display magnification, and the numbers 111S and scales 112S that are farther from the indicated value indicate the display magnification. The entire image of the analog type speedometer 110 </ b> S in which is reduced is displayed on the display 10.

  As a result, the direction and degree of change of the vehicle speed in the current speed range viewed from the entire speed range (for example, 0 km / h to 180 km / h) can be visually recognized, so that the sense of speed can be experienced well. Can do.

  In the first embodiment, the image data of the entire image of the speedometer 110S respectively associated with a plurality of instruction values having different sizes is stored in the RAM 23 in advance, and corresponds to the instruction values according to changes in the vehicle speed. The attached image data is sequentially read from the RAM 23, and the entire image of the speedometer 110S is displayed on the display 10 based on the image data. Thereby, the processing burden of the vehicle meter unit 1 can be reduced when displaying the image of the speedometer 110S.

  In the first embodiment, the numeral 101S and the scale 102S are arranged along the arc-shaped instruction locus 103S, the pointer 104S is visually recognized so as to move along the instruction locus 103S, and the entire display magnification is the same. With the whole image of the speedometer 100S formed in step S100 as the original image, the display magnification is larger for the numbers 101S and scales 102S that are closer to the indicated value indicated by the pointer 104S, and for the numbers 101S and scales 102S that are farther from the indicated value. The original image is corrected so as to be small.

  As a result, an image of the speedometer 110S having an elliptical shape as a whole can be obtained as if the other numbers 111S and scales 112S are viewed from the viewpoint of the numbers 111S and scales 112S close to the indicated value. The entire image of the analog speedometer 110S can be displayed while suppressing an increase in size.

  In the first embodiment, the indication mark indicating the vehicle speed indication value is configured by the pointer 114S. However, the indication mark is not limited to this, and for example, as shown in FIGS. 8 to 11, for example, a triangular mark indicating the scale 212S You may comprise by the part 214S and the circular marking part 215S surrounding the number 211S, for example. In this case, as shown in FIGS. 8 to 10, if the indicated value is close to any of the numbers 211S, the marking portion 215S surrounds the entire close number 211S, and the indicated value is adjacent to the indicated value 211S as shown in FIG. If it is an intermediate value of the matching number 211S, it is set to a size that includes a part of both numbers.

  Also in the speedometer 210S of the second embodiment, a plurality of instruction values having different sizes (for example, instruction values are set for every 1/3 km / h, and about 420 instruction values are within a range from 0 km / h to 140 km / h. Image corrections based on a speedometer (not shown) that is an original image are prepared in advance so as to correspond to the respective settings, and each image data is stored in the RAM 23 in advance. In the speedometer 210S of the second embodiment, unlike the speedometer 110S of the first embodiment, the scale 212S is not omitted even after image correction, and the scale is oscillated in units of 1 km / h from 0 km / h to 140 km / h. ing.

  Also according to the second embodiment, the direction and degree of change of the vehicle speed in the current speed range viewed from the entire speed range displayed (for example, from 0 km / h to 140 km / h) can be visually recognized, thus providing a good sense of speed. Can be experienced.

  In the first and second embodiments, the present invention is applied to a speedometer or tachometer as an analog meter. However, when the vehicle is an electric vehicle or the like, for example, as shown in FIGS. The present invention can be applied to the meter 310B. In the third embodiment, as indicated by a broken line in FIG. 2, a vehicle output detection unit 47 is connected to the body ECU 30 instead of the engine speed detection unit 42 of the sensor 40 group. The vehicle output detection unit 47 detects a power value indicating the total output of the power in the battery and the regenerative state.

  The battery remaining amount meter 310B is provided with numbers 311B every 5% from a power value of 0% to 100% (predetermined unit:%), and a scale 312B in units of 1/6%. Further, a scale from a power value of 0% to a scale 312B indicating an instruction value is covered with a mark portion 314B (instruction mark) which is a shaded pattern.

  In the battery remaining amount meter 310B according to the third embodiment, a plurality of instruction values having different sizes (for example, instruction values are set every 1/6%, and about 600 instruction values within a range from 0% to 100%). Are prepared in advance based on a battery remaining amount meter (not shown) as an original image so as to correspond to each of the image data, and each image data is stored in the RAM 23 in advance.

  According to the third embodiment, the power change direction and the degree of change in the current power region viewed from the entire power region (for example, 0% to 100%) to be displayed can be visually recognized. The feeling can be experienced well. In particular, when the display magnification of the scale 312B close to the instruction value is enlarged, the degree of change of the instruction value can be viewed well.

  In the first to third embodiments, correction is performed using the meter image of the analog meter in which the numbers and scales are arranged along the arc-shaped instruction locus as the original image. As shown in FIG. 15, for example, a part of the speedometer 410S is schematically shown by using, as an original image, a meter image of an analog meter in which numbers and scales are arranged along a linear instruction locus. Further, correction may be performed as if the numbers 411S and scales 412S close to the indicated value approach the passenger side.

  In the first to third embodiments, the meter ECU 20 is configured to repeatedly execute the meter drawing program of FIG. 3 when the ignition switch is turned on. However, instead of the meter drawing program of FIG. 3, for example, the meter drawing of FIG. You may comprise so that a program may be repeatedly performed. The meter drawing program in FIG. 16 is an example of a program that displays a meter image of a speedometer. In the fourth embodiment, for example, an original image of the speedometer as shown in FIG. 4 is stored in the ROM 22, and the CPU 21 of the meter ECU 20 causes the drawing circuit 24 to create the drawing data of the meter reflecting the vehicle speed, The meter images are synthesized on the graphic memory 27 and displayed on the display area D1 of the display 10.

  Specifically, the meter ECU 20 moves (rotates) so that the pointer points to the indicated value (S12), the display magnification of the numbers and scales close to the pointer is large, and the display magnifications of the numbers and scales far from the pointer are small. A meter image configured as described above is created (S13) and output to the display 10 (S14). In this case, as shown in FIG. 4, the display magnification may be changed for each predetermined area including numbers and scales. For example, the display magnification may be changed for numbers and scales. The method of deformation can be changed as appropriate. However, in the deformed meter image, adjacent numbers, adjacent scales, and numbers and scales do not overlap.

  In the fourth embodiment, the case where the instruction mark is a pointer has been described. However, the instruction mark is not limited to the pointer, and may be a mark as described in the second embodiment, for example. Further, the present invention may be applied to image creation of a tachometer other than a speedometer or a battery remaining amount meter as described in the third embodiment.

  In the first to fourth embodiments, the case where the present invention is applied to the vehicle meter unit 1 for automobiles has been described. However, the present invention can be applied to, for example, a vehicle meter unit for two-wheeled vehicles and railway vehicles. it can. Further, the present invention can be widely applied to meter units for airplanes and ships other than vehicles.

DESCRIPTION OF SYMBOLS 1 Vehicle meter unit 10 Display 20 Meter ECU (image display control means)
23 RAM (storage means)
30 Body ECU
40 sensor group 41 vehicle speed sensor 42 engine speed detection unit 47 vehicle output detection unit 100S speedometer (original image of analog meter)
110S, 210S, 410S Speedometer (analog type meter)
101S, 111S, 211S, 311B, 411S Numbers 102S, 112S, 212S, 312B, 412S Scale 103S Instruction locus 104S, 114S Pointer (indication mark)
214S, 215S, 314B Mark (indication mark)
310B Battery level meter (analog meter)

Claims (6)

A display for displaying meter images;
As the meter image, a meter image of an analog meter having numerals and scales as a guideline for visually recognizing a physical quantity related to the vehicle state as an instruction value in a predetermined unit and an instruction mark indicating the instruction value is displayed on the display. Image display control means for causing
The image display control means is an analog meter in which the display magnification is larger as the number and scale closer to the indicated value indicated by the instruction mark, and the display magnification is smaller as the number and scale farther from the indicated value. A vehicle-mounted display device that displays an entire image on the display.   Storage means for storing in advance image data of the entire image of the analog meter respectively associated with the plurality of instruction values having different sizes, and the image display control means is configured to change the instruction according to a change in the physical quantity. The in-vehicle display device according to claim 1, wherein image data associated with a value is sequentially read from the storage unit, and an entire image of the analog meter is displayed on the display based on the image data.   The whole image of the analog meter is such that the numerals and the scale are arranged along an arc-shaped instruction locus, the instruction mark is visually recognized to move along the instruction locus, and the entire display magnification is the same. The original image is the whole image of the analog meter, and the display magnification is larger for the numbers and scales closer to the indicated value indicated by the indication mark, and the display magnification is smaller for the numbers and scales farther from the indicated value. The in-vehicle display device according to claim 1 or 2, wherein the original image is corrected so as to be.   The in-vehicle display according to any one of claims 1 to 3, wherein the display magnification is set to a size such that the adjacent numbers, the adjacent scales, and the numbers and the scales do not overlap. apparatus.   The said instruction | indication mark is comprised including the figure which shows the said number or the said scale, the figure surrounding the said number or the said scale, or the shaded pattern which covers the said number or the said scale. The on-vehicle display device according to claim 1.   The in-vehicle display device according to any one of claims 1 to 5, wherein the entire image of the analog meter displays a vehicle speed, an engine speed, or a remaining battery level.

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