JP5548880B2 - Work machine display - Google Patents

Description

  The present invention relates to a display device for a work machine that is installed in a cab of a work machine such as a hydraulic excavator and displays various information to an operator.

  Various instruments are mounted in a cab of a work machine represented by a hydraulic excavator or the like in order to make an operator recognize the operation state of the machine. Examples of this type of instrument include an engine speed meter, a fuel meter, a cooling water temperature meter, a hydraulic oil thermometer, and an hour meter indicating the operating time of the work machine. In order to display such information, a display device such as a liquid crystal display may be used instead of each instrument. In this type of display device, the type of attachment attached to the multi-joint type working device may also be recognized. Also, in recent years, there is a case where a monitoring camera is installed at a position (in particular, a rear position of a vehicle) that becomes a blind spot when an operator operates a machine, and an image from the monitoring camera is displayed.

  These pieces of information can be displayed by installing a plurality of display devices in the cab, but they should be displayed on a single display device from the viewpoint of securing the operator's front vision and suppressing unnecessary viewpoint movement. Is preferred. In this case, it is also possible to display each information on one display device at the same time. However, in consideration of the visibility and priority of each information, a method of switching and displaying each information based on the operation of the operator. It is preferable to adopt.

  In this way, as a technique used when switching and displaying each information on one display device, information preferentially displayed on the display device is automatically selected according to the operating state of the work machine. In some cases, the display switching operation by the operator is reduced (see Patent Document 1).

JP 2002-81096 A

  By the way, when a plurality of pieces of information are intensively displayed on one display device as described above, the amount of image data indicating figures, symbols, characters, etc. used for displaying each information also increases. The amount of data to be stored in the storage unit increases. In particular, when a plurality of information is displayed as described above, in order to improve visibility, a plurality of backgrounds having different colors are often used on the screen. In this case, the same meaning is used. Even in the case of image data, it is sometimes necessary to prepare different colors depending on the background in order to maintain visibility. Furthermore, there are cases where the same display device or work machine is made compatible with a plurality of languages (for example, several tens of languages) so that it can be used in a plurality of countries. In this case, characters corresponding to the number of the corresponding languages are used. It is necessary to store information, and the amount of data to be stored in the storage unit further increases.

  However, as a computer that performs control processing in a display device of a work machine, a microcontroller (microcomputer) specialized in specific control processing that can operate even in a harsh usage environment is used. Unlike a so-called personal computer or other general-purpose computer, the storage unit (memory) used in the microcomputer has a very high price per capacity. For this reason, if a storage unit having a large capacity is easily used in accordance with the actual increase in the amount of data as described above, the manufacturing cost of the work machine increases. Therefore, measures have been taken to reduce the amount of data as much as possible by compressing the image data to be used or using many graphic displays instead of character displays. There is a limit to the suppression.

  An object of the present invention is to provide a display device for a work machine that can suppress the capacity of a storage unit to be used even if it is multifunctional.

(1) In order to achieve the above-described object, the present invention includes a display unit, a contour portion that is a boundary between a screen background displayed on the display unit, and a main body unit positioned inside the contour portion. A storage unit that stores the image data, and a processing unit that executes a process of displaying the image data on a plurality of different backgrounds displayed simultaneously or individually on the display unit, The color of the outline portion is the same as or similar to the color of at least one of the plurality of backgrounds, and the color of the contour portion is the same as or similar to that of the main body portion. Even if image data is displayed by the processing unit, it is different from any color of the at least one background having the same or similar color as the main body so that the user can visually recognize the main body. .

(2) In the above (1), preferably, the color of the contour portion is any of other backgrounds obtained by removing the at least one background having the same or similar color as the main body portion from the plurality of backgrounds. It is assumed that when the image data is displayed by the processing unit, it is the same as or similar to any of the other background colors so that it is difficult for the user to visually recognize the contour portion.

(3) In the above (1), preferably, the main body represents a figure, a symbol, a character, or a combination thereof.

  According to the present invention, it is possible to reduce the capacity of the storage unit as compared with the case of creating image data of a different color according to the background color of the display screen.

1 is an external view of a hydraulic excavator according to an embodiment of the present invention. FIG. 2 is a schematic diagram of a driver's cab of the hydraulic excavator illustrated in FIG. 1. The schematic block diagram of the display apparatus of the working machine which concerns on embodiment of this invention. The figure of an example of what is displayed on a plurality of backgrounds among the image data memorized by storage part 32 concerning an embodiment of the invention. The figure which shows the basic screen of the display part 7 in embodiment of this invention. The figure which shows the main menu 60 displayed on the main display part 41. FIG. The figure which shows the work mode selection screen displayed on the main display part 41, when the work mode 63 is selected in the main menu 60. FIG. The figure which shows the screen displayed on the main display part 41, when the breaker 72 is selected in the work mode selection screen 70. FIG. The figure which shows the setting menu displayed on the main display part 41, when the setting menu 64 is selected in the main menu 60. FIG. The figure which shows the screen displayed on the main display part 41, when the attachment adjustment 92 is selected in the setting menu 90. FIG.

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

  FIG. 1 is an external view of a hydraulic excavator according to an embodiment of the present invention. The hydraulic excavator shown in this figure includes an articulated working device 3 having a boom 3a, an arm 3b, and a bucket (attachment) 3c, an upper swing body 2, and a crawler type lower traveling body 1. The boom 3a is rotatably supported by the upper swing body 2 and is driven by a hydraulic cylinder (boom cylinder) 3d. The arm 3b is rotatably supported by the boom 3a and is driven by a hydraulic cylinder (arm cylinder) 3e. The bucket 3c is rotatably supported by the arm 3b and is driven by a hydraulic cylinder (bucket cylinder) 3f. The upper swing body 2 is provided with a cab 4 for an operator to board and operate the machine. In the cab 4, a driver's seat 5, a display device 9 for displaying various information related to the work machine, a traveling of the lower traveling body 1, a turning of the upper revolving body 2 and an operation of the working apparatus 3 are operated. Various operation devices 13 (operation levers and the like (see FIG. 2)) are installed.

  FIG. 2 is a schematic diagram inside the cab 4 of the excavator shown in FIG. 1, and FIG. 3 is a schematic configuration diagram of the display device of the work machine according to the embodiment of the present invention. In addition, the same code | symbol is attached | subjected to the same part as the previous figure, and description is abbreviate | omitted (it is the same also about a later figure). As shown in these drawings, the display device 9 includes a display unit 7, an operation unit 8, a processing unit 31, a storage unit 32, and a communication unit 33. Among these, the processing unit 31, the storage unit 32, and the communication unit 33 are incorporated in one integrated circuit, and constitute a microcontroller (microcomputer).

  The display unit 7 is a dot matrix type monitor. The display unit 7 of the present embodiment is a color liquid crystal display, and is installed in a pillar 6 located on the front right side in the cab 4 as shown in FIG.

  The operation unit 8 is for operating the display device 9 and is installed in the cab 4. As shown in FIG. 2, the operation unit 8 according to the present embodiment includes a movement determination button 10, a return button 11, and a menu button 12. The movement decision button 10 is a so-called disc jog type selector, and is formed of a disk-shaped dial that can be rotated to the left and right. When the movement determination button 10 is rotated to the left or right, an item (or a cursor or the like) highlighted on the screen on the display unit 7 can be moved. When the selection determination button 10 is pressed, the highlighted display is performed. Operations such as determining items can be performed. When the return button 11 is pressed, it is possible to return to the previous screen displayed from the currently displayed screen. When the menu button 12 is pressed, the main menu (see FIG. 6) can be displayed on the main display section 41 (see FIG. 5) of the display section 7.

  The processing unit 31 is a part that executes control and processing necessary when displaying information related to the work machine on the display unit 7, and includes, for example, a CPU. The processing unit 31 according to the present embodiment has a function of executing processing for displaying the image data stored in the storage unit 32 on the background displayed on the display unit 7.

  The storage unit 32 is a part in which data necessary for displaying information related to the work machine on the display unit 7 is stored, and is configured of, for example, a RAM or a ROM. In the storage unit 32, as image data displayed on the display unit 7, a graphic, a symbol, a character, or a combination thereof is stored. In addition, since the character used for a display apparatus is decided, it is preferable to memorize | store a character by image data (namely, bitmap font) from a viewpoint of the saving of the capacity | capacitance of the memory | storage part 32. FIG.

  FIG. 4 is a diagram illustrating an example of what is displayed on a plurality of backgrounds among the image data stored in the storage unit 32 according to the embodiment of the present invention.

  The image data 50a and 50b shown in this figure are displayed on a plurality of backgrounds of different colors that are displayed simultaneously or individually on the display unit 7, and the background of the screen displayed on the display unit 7 It is comprised from the outline parts 51a and 51b used as a boundary, and the main-body parts 52a and 52b located inside the outline parts 51a and 51b. The main body portions 52a and 52b are configured by figures, symbols, characters, or a combination thereof, and are portions that generate a predetermined idea alone. The colors of the contour parts 51a and 51b are such that the user (including the operator) can visually recognize the main body parts 52a and 52b even if the image data 50a and 50b are displayed on any of a plurality of backgrounds having different colors. And at least one of hue, saturation and lightness is different from at least one of the background colors. When both the background and the main body portions 52a and 52b are achromatic, it is only necessary that the brightness of the main body portions 52a and 52b be different from each other so that the main body portions 52a and 52b can be visually recognized.

  When the contour portions 51a and 51b are provided in this way, the visibility of the main body portions 52a and 52b can be ensured regardless of the background, so that the same image data 50a and 50b can be used for a plurality of backgrounds. . At that time, when the colors of the main body portions 52a and 52b are the same as or similar to any of the plurality of background colors different from each other, the effect of improving the visibility of the main body portions 52a and 52b is particularly remarkable. Become.

  In addition to the above conditions, the colors of the contour portions 51a and 51b are such that when the image data 50a and 50b are displayed on any of the plurality of backgrounds, it is difficult for the user to visually recognize the contour portions 51a and 51b. Preferably, it is the same as or similar to any of the plurality of background colors. When the colors of the contour portions 51a and 51b are set in this way, the contour portions 51a and 51b can be made inconspicuous when displayed on the same or similar background, and the visibility of the main body portions 52a and 52b is improved. Can be made.

  By the way, the main body parts 52a and 52b in the image data 50a and 50b shown in FIG. 4 represent the figure of the attachment of the hydraulic excavator. More specifically, the image data 50a indicates a bucket, and the image data 50b indicates a breaker. The image data 50a and 50b are displayed on a black background and a gray background (details will be described later), and the color of the main body portions 52a and 52b is set to the same black as the black background. 51b is set to white similar to the gray background. In FIG. 4, the background is gray so that the white contour portions 51a and 51b are easily noticeable, but this gray portion is not included in the image data 50a and 50b.

  Returning to FIG. 3, the communication unit 33 is connected via a communication line 34 to various control devices such as an ECU installed in each part of the work machine, various sensors and a monitoring camera that monitors the blind spot of the operator. The data is input / output from these various devices. Data input from various devices is appropriately displayed on the display unit 7. In addition, instructions input by the operator via the operation unit 8 are output to various control devices as necessary, and are used for controlling the work machine.

  FIG. 5 is a diagram showing a basic screen of the display unit 7 in the embodiment of the present invention. As shown in this figure, the basic screen according to the present embodiment is divided into a plurality of areas, and includes a main display unit 41, a work mode display unit 42, an hour meter display unit 43, and a date and time display unit 44. A warning lamp display unit 45 is provided.

  The main display unit 41 is a part that can display a plurality of information by switching the screen to be displayed as appropriate. The main display unit 41 is used as a cooling water temperature and fuel amount display unit 41a and a back monitor display unit 41b on the basic screen. When pressed, it is used as a part where the main menu (see FIG. 6) is displayed instead. The cooling water temperature and fuel display portion 41a is a portion where the cooling water temperature and the fuel remaining amount are displayed. In the present embodiment, a cooling water thermometer is displayed on the left side of the screen, and a fuel fuel level meter is displayed on the right side of the screen, in a form simulating an analog meter. The back monitor display unit 41b is a part where a video of a monitoring camera (not shown) installed behind the upper swing body 2 is displayed in color.

  The work mode display part 42 is a part on which a work mode indicating what kind of attachment is attached to the tip of the arm 3b and working. In the work mode display section 42 in the present embodiment, an image of each attachment is displayed to indicate the work mode, and the background color is set to gray. In the work mode display section 42 of FIG. 5, the image data 50a of the bucket is displayed by the processing section 31, and it can be seen that the excavation mode in which the bucket 3c is attached to the arm 3b is selected. In this screen, the image data 50a having the white outline 51a is displayed on a gray background so that the color of the outline 51a is not conspicuous.

  The hour meter display portion 43 is a portion where the accumulated operating time of the work machine is displayed. The date and time display unit 44 is a part where the date and time are displayed. The warning light display unit 45 is a part where icons of various warning lights are displayed. In the example of FIG. 5, an icon of a seat belt warning light is displayed. In addition to the display units shown in FIG. 5, for example, an air conditioner display unit that displays a set temperature and a set air volume of an air conditioner, a radio display unit that displays a set frequency and a set volume of a radio, etc. May be provided.

  Here, another screen displayed on the main display unit 41 will be described. FIG. 6 is a diagram showing a main menu 60 displayed on the main display unit 41. When the menu button 12 is pressed, the main menu 60 is displayed on the main display unit 41. The main menu 60 in the present embodiment is composed of a black background and white characters displayed on the black background in order to ensure user visibility. Further, a plurality of menus 61, 62, 63, 64 are arranged in the vertical direction of the screen, and the selected menu (“air conditioner 61” in the example of FIG. 6) is highlighted. The background color when highlighted is gray. When the movement determination button 10 is rotated, the highlight display moves up and down according to the rotation direction. When the highlight display is moved to the work mode 63 and the movement determination button 10 is pressed, a work mode selection screen is displayed on the main display unit 41.

  FIG. 7 is a diagram showing a work mode selection screen 70 displayed on the main display unit 41 when the work mode 63 is selected in the main menu 60. As in the main menu 60, the work mode selection screen 70 shown in this figure is mainly configured by a black background and white characters. In the menu 71 indicating the excavation mode, image data 50a is displayed by the processing unit 31 together with the characters “excavation”, and in the menu 72 indicating the breaker mode, image data 50b is displayed together with the characters “breaker” by the processing unit 31. Is displayed. The image data 50a is the same as that displayed on the work mode display unit 42 in FIG. The color of the main body 52a in the image data 50a is the same black as the background, but has a white outline 51a, so that the user can visually recognize the shape of the bucket indicated by the main body 52a. On the other hand, in FIG. 7, the menu 72 is highlighted, and the image data 50b indicating the breaker is displayed on a gray background. When the menu on which the attachment after the replacement is displayed is selected on the work mode selection screen 70 after the attachment is replaced, the hydraulic circuit is switched or the flow rate is switched according to the attachment, so that the attachment replacement operation can be easily completed. Can do. The image data 50a or 50b related to the work mode selected on the screen 70 is displayed on the work mode display unit 42. As a result, the user can confirm the currently selected work mode on the basic screen. In addition, although only excavation and a breaker are displayed on the work mode selection screen 70 of FIG. 7, the work mode which uses a subdivision machine, a crusher, or a vibro as an attachment can be selected.

  FIG. 8 is a diagram showing a screen 80 displayed on the main display unit 41 when the breaker 72 is selected on the work mode selection screen 70. This screen 80 is a screen for displaying numerical values and the like set in the selected work mode, and is mainly composed of a black background and white characters as in the main menu 60. On the screen 80, image data 50b indicating a breaker is displayed by the processing unit 31. The image data 50b is the same as that displayed on the work mode selection screen 70. The color of the main body 52b in the image data 50b is the same black as the background, but has a white outline 51b, so that the user can visually recognize the shape of the breaker indicated by the main body 52b.

  FIG. 9 is a diagram showing a setting menu 90 displayed on the main display unit 41 when the setting menu 64 is selected in the main menu 60. Similar to the main menu 60, the setting menu 90 shown in this figure is composed of a black background and white characters. In the setting menu 90, a plurality of menus 91, 92, 93, and 94 are arranged in the vertical direction of the screen, and the selected menu (“attachment adjustment 92” in the example of FIG. 9) is highlighted. In the date and time menu 91, the date and time displayed on the date and time display unit 44 can be set. In the attachment adjustment menu 92, various setting values used in the selected work mode can be adjusted. In the brightness adjustment menu 93, the brightness of the display unit 7 can be adjusted. In the language / language menu 94, the language used in the display unit 7 can be changed.

  FIG. 10 is a diagram showing a screen 100 displayed on the main display unit 41 when the attachment adjustment 92 is selected in the setting menu 90. A screen 100 shown in this figure is an adjustment screen for the pump flow rate when the work mode is a breaker, and is mainly composed of a black background and white characters as in the main menu 60 and the like. On the screen 100, image data 50b indicating a breaker is displayed by the processing unit 31. The image data 50 b is the same as that displayed on the work mode selection screen 70 and the screen 80. The color of the main body 52b in the image data 50b is the same black as the background, but has a white outline 51b, so that the user can visually recognize the shape of the breaker indicated by the main body 52b. When the movement determination button 10 is rotated, the bar on the screen moves according to the rotation direction and the rotation amount, and the pump flow rate is increased or decreased. When the movement determination button 10 is pressed after adjusting to a desired pump flow rate, the pump flow rate is set as the set value of the work mode.

  As described above, in the present embodiment, by providing the white contour portions 51a and 51b to the image data 50a and 50b having the black main body portions 52a and 52b, the work modes having different background colors from the main body portions 52a and 52b. The image data 50a and 50b can be viewed not only on the display unit 42 but also on the screens 70, 80 and 100 having the same background color as the main body units 52a and 52b. When the contour portions 51a and 51b are provided in the image data 50a and 50b in this way, the visibility is not impaired even when the same image data 50a and 50b are displayed on a plurality of backgrounds having different colors. Therefore, the capacity of the storage unit 32 can be reduced as compared with the case where image data of different colors is created. As a result, it is possible to afford to add data other than image data to the storage unit 32. Therefore, it is possible to improve the software function while maintaining the hardware configuration, and to further enhance the function of the display device. it can.

  In the above description, the case where image data indicating an attachment is used has been described. Needless to say, the present invention can also be applied to an image indicating other figures, symbols, characters, and the like. In the above description, the display device of the hydraulic excavator has been described as the work machine. However, the work machine on which the display device is mounted is not limited to the hydraulic excavator.

  DESCRIPTION OF SYMBOLS 7 ... Display part, 8 ... Operation part, 9 ... Display apparatus, 31 ... Processing part, 32 ... Memory | storage part, 50a, 50b ... Image data, 51a, 51b ... Contour part, 52a, 52b ... Main-body part

Claims (3)

A display unit;
A storage unit that stores image data including a contour part that is a boundary with the background of the screen displayed on the display part, and a main body part located inside the contour part ;
A processing unit that executes a process of displaying the image data on a plurality of backgrounds having different colors that are displayed simultaneously or individually on the display unit,
The color of the main body is the same as or similar to the color of at least one of the plurality of backgrounds,
The color of the contour portion is the same as or similar to the main body portion so that the user can visually recognize the main body portion even if the image data is displayed by the processing portion on any of the at least one background . A display device for a work machine, wherein the display device is different from any of the colors of the at least one background having the same or similar color as the main body . The display device for a work machine according to claim 1,
Color of the contour portion is further the image data by the processing unit of the at least one background to any other background excluding from said plurality of background have the same or similar color as the body portion is displayed viewing difficult manner, the display apparatus for a working machine, characterized in that the same or similar to any of the color of the other background users the outline portion when the. The display device for a work machine according to claim 1,
The display device of a working machine, wherein the main body portion represents a figure, a symbol, a character, or a combination thereof.

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