JP2004308137A - Display device and display control device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a display device for coping with a change in a warning area, and a display control device for easily variably controlling the warning area. <P>SOLUTION: The display device 28 has a present value display part 37b for displaying a present measured value, and a warning area display part 37c arranged along the present value display part 37b. This warning area display part 37c displays whether or not the present measured value exists in at least a red zone 37c3, and can vary a range of the red zone 37c3. The display control device has a machine body control controller 31 for indicating a change in the range of the red zone 37c3 of the warning area display part 37c to the display device 28 on the basis of registered data corresponding to a selected choice by selecting one from a plurality of choices displayed on this display device 28. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a display for displaying a warning area and a display control device for variably controlling the warning area.
[0002]
[Prior art]
On gauges of construction equipment such as hydraulic shovels, gauges that indicate fuel remaining, cooling water temperature, hydraulic oil temperature, etc. are composed of a fixed printed daily scale and a needle or liquid crystal segment that indicates the current measurement value. (For example, see Patent Document 1).
[0003]
The scale was colored to indicate the warning area such as low fuel level, high water temperature or high oil temperature, so the operator can confirm that the current measured value has reached the warning area. Can be recognized.
[0004]
[Patent Document 1]
JP-A-2002-339408 (pages 2-3, FIGS. 1, 9)
[0005]
[Problems to be solved by the invention]
However, the warning area such as the hydraulic oil temperature differs depending on the work tool. When the normal work tool (eg, a bucket) is replaced with another work tool (eg, a breaker), the warning area of the hydraulic oil temperature may be changed. Although desirable, the conventional fixed-type printed scale cannot cope with a change in the warning area, and does not allow the worker to appropriately recognize danger.
[0006]
SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has as its object to provide a display capable of responding to a change in a warning area and a display control device capable of easily variably controlling the warning area.
[0007]
[Means for Solving the Problems]
According to the first aspect of the present invention, there is provided a current value display section for displaying a current measurement value, and a warning provided along the current value display section for displaying whether or not the current measurement value is at least in a warning area. A warning area display section having a variable area range, and a variable warning area display section provided along the current value display section. Even if it is changed, the viewer can appropriately recognize whether or not the current measured value is in a state to warn.
[0008]
According to a second aspect of the present invention, in the display device according to the first aspect, the warning area display unit is a display unit that displays a liquid crystal, and the warning area display unit is displayed using a liquid crystal display. The range can be easily changed to meet a wide range of user needs.
[0009]
According to a third aspect of the present invention, there is provided the display according to the first or second aspect, and the registered data corresponding to the option selected by selecting one of a plurality of options displayed on the display. And a controller for instructing the display unit to change the range of the warning area of the warning area display unit based on the control unit, and selects one from a plurality of options displayed on the display unit. Alone, the controller automatically changes the range of the warning area in the warning area display section based on the selected option and the registered data corresponding to the selected option, so that the range of the warning area can be easily and appropriately variably controlled. .
[0010]
According to a fourth aspect of the present invention, there is provided a display control device according to the third aspect, wherein the display and the controller are mounted on a hydraulic shovel, and the option is set to a type of tool exchangeably mounted on the hydraulic shovel. It is a display control device that sets the value to the hydraulic oil temperature of the excavator, and when the excavator tool is replaced, the user only needs to select one of the tools displayed on the display to control the excavator. The excavator automatically changes the range of the warning area of the hydraulic oil temperature based on the registered data corresponding to the selected tool, so that the operator of the excavator can automatically set the warning area appropriately according to the tool. The operating oil temperature can be monitored while comparing with.
[0011]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, the present invention will be described in detail with reference to one embodiment shown in FIGS.
[0012]
FIG. 5 shows a hydraulic excavator as a working machine, in which a lower traveling body 11 is provided with an upper revolving body 12 so as to be revolvable, and a power device such as an engine and a hydraulic pump driven by the engine is provided on the upper revolving body 12. The unit 13 includes a control valve unit (not shown) for controlling a hydraulic circuit using a hydraulic pump as a hydraulic pressure source, a cab 14 for covering an operation space of an operator, a working device 15, and the like.
[0013]
The working device 15 has a boom 17 pivoted by a boom hydraulic cylinder 16, an arm 19 pivoted by an arm hydraulic cylinder 18 pivotally supported by a tip end of the boom 17, and a bucket hydraulic cylinder A bucket 23 which is rotated by a linkage 21 via a linkage 22 is supported by a shaft.
[0014]
FIG. 6 shows the inside of the cab 14, in which an operation lever 25 for traveling is provided in front of the seat 24, and operation levers 26L and 26R for operation as operating devices are provided on both left and right sides of the seat 24. A lever upper switch 27 called a one-touch low idle switch or an auto decel key for lowering the rotation speed of the engine to a set low speed state by one-touch operation is provided above the operation lever 26R on one side.
[0015]
A display 28 having an input function is arranged on one side of the operation lever 25 for traveling. Further, a hydraulic lock lever 29 for stopping the hydraulic circuit is disposed on the elevator side of the seat 24.
[0016]
Next, one embodiment of a display and a display control device according to the present invention will be described with reference to FIGS. 1 to 3, and another embodiment will be described with reference to FIG.
[0017]
FIG. 1A shows a display 28 installed in a cab 14 of a hydraulic shovel as the working machine, and an airframe controller 31 as a controller is connected to the display 28.
[0018]
The body control controller 31 includes a central processing unit (CPU) and a memory (ROM, RAM, etc.), and performs a traveling operation of the lower traveling body 11 of the hydraulic shovel, a pivoting operation of the upper revolving superstructure 12, and a work operation of the work device 15. And the like, but also transmits information necessary for the operation of the display 28.
[0019]
The display 28 is provided with a display panel 33 and an operation panel 34 on a display main body 32. The display panel 33 displays a fuel gauge 35 for displaying the remaining amount of engine fuel and a temperature of engine cooling water. A water temperature gauge 36, an oil temperature gauge 37 for displaying the oil temperature of the hydraulic oil in the hydraulic circuit, a character display section 38 for numerical values and the like, and a message display section 39 functioning as a display device of the machine controller 31. The liquid crystal screens provided, in particular, the fuel gauge 35, the water thermometer 36, and the oil thermometer 37 are full graphic screens using full graphic liquid crystal / LEDs (light emitting diodes).
[0020]
On the other hand, the operation panel unit 34 of the display 28 has an up arrow key 41, a down arrow key 42, a left arrow key 43, a right arrow key 44, a menu key 45, a set key 46, an OK key 47 as key input means. A cancel key 48 is provided.
[0021]
A cover 50 is provided at the lower end of the display main body 32 by a hinge 49 so as to be freely opened and closed. The cover 50 protects the operation panel 34.
[0022]
The fuel gauge 35, the water thermometer 36, and the oil thermometer 37 respectively include symbol icons 35a, 36a, and 37a, and current measured values (fuel remaining amount) arranged so as to surround these symbol icons 35a, 36a, and 37a. , Water temperature, oil temperature), and warning area display sections 35c, 36c, 37c provided outside along the current value display sections 35b, 36b, 37b. Have.
[0023]
The symbol icons 35a, 36a, and 37a are fixed marks, but the current value display sections 35b, 36b, and 37b arrange a plurality of liquid crystal segments in an arc shape and display the current measured values (remaining fuel amount, water temperature, oil amount). In this case, the number of liquid crystal segments corresponding to (temperature) is displayed by coloring.
[0024]
For example, as shown in FIG. 1B, the current value display section 37b of the oil temperature gauge 37 includes a plurality of areas 37b1 for displaying the current oil temperature on a scale and other areas 37b2 for which the coloring can be changed. Are formed in different colors.
[0025]
Each of the warning area display sections 35c, 36c, and 37c displays whether or not the current measurement value is at least in the warning area. These warning area display sections 35c, 36c, and 37c also include a plurality of liquid crystal displays. The range of the warning area is made variable by arranging the segments in an arc shape.
[0026]
For example, as shown in FIG. 1 (b), the warning area display portion 37c of the oil temperature gauge 37 includes a low temperature area 37c1 for indicating to the operator that the oil temperature is too low and the need for warming up, and An appropriate temperature region 37c2 indicating that the temperature is within the appropriate range, and a red zone 37c3 as a warning region for alerting the operator because the oil temperature is too high are colored (for example, white, green, red, etc.). Are formed in different colors by a plurality of liquid crystal segments that can change the color.
[0027]
Therefore, for example, by changing the coloring of the liquid crystal segment on the side of the appropriate temperature region 37c2 to the warning region at the boundary between the appropriate temperature region 37c2 and the red zone 37c3, for example, by changing from green to red, As shown in FIG. 1B, the red zone 37c3 can be expanded to a lower temperature side.
[0028]
Similarly, in the fuel gauge 35 and the water temperature gauge 36, a red zone as a warning area is formed by color-coding with a plurality of liquid crystal segments whose coloring can be changed.
[0029]
Further, the aircraft controller 31 selects one of a plurality of options displayed on the message display section 39 of the display 28 to display a warning area based on the selected option and registered data corresponding to the selected option. It has a function of instructing the display unit 28 to change the range of the red zone of the units 35c, 36c, 37c, for example, the red zone 37c3.
[0030]
The options are types of tools such as a bucket 23 and a breaker (not shown) which are exchangeably mounted on the excavator.
[0031]
Next, referring to the flowcharts shown in FIGS. 2 and 3, in the warning area display section 37c of the oil temperature gauge 37 that measures the operating oil temperature of the hydraulic circuit mounted on the hydraulic shovel, the machine controller 31 A control procedure for changing the range of the red zone 37c3 as shown in FIG. Note that the circled numbers shown in the figure indicate the step numbers.
[0032]
(Step 1)
A normal screen is displayed on the message display section 39 of the display device 28.
[0033]
(Step 2)
The operator of the excavator presses a menu key 45 provided on the operation panel 34 of the display 28.
[0034]
(Step 3)
When the menu screen is activated, the down arrow key 42 is operated to move the cursor to “select tool”.
[0035]
(Step 4)
When the OK key 47 is pressed, the name of the tool currently selected, for example, the tool name indicating the bucket 23 is displayed.
[0036]
(Step 5)
When the OK key 47 is pressed again on the currently selected tool screen, the screen is switched to a password request screen.
[0037]
(Step 6)
By operating the up arrow key 41, the down arrow key 42, the left arrow key 43, and the right arrow key 44, a preset user password is input.
[0038]
(Step 7)
By operating the left arrow key 43 and the right arrow key 44, a tool name to be changed or selected from a plurality of tool names registered in advance, for example, a tool name indicating a breaker is displayed.
[0039]
(Step 8)
When the target tool name is displayed, the set key 46 is pressed.
[0040]
(Step 8-1)
When the set key 46 is pressed, the display 28 informs the machine controller 31 that the tool has been changed.
[0041]
(Step 8-2)
The machine controller 31 changes control parameters in engine speed control, hydraulic pump displacement variable control, and the like to control parameters suitable for the tool, and notifies the display 28 that the change has been completed.
[0042]
(Step 8-3)
At the same time, the aircraft controller 31 transmits the operating temperature range of the selected tool to the display 28.
[0043]
(Step 8-4)
The display 28 changes the range of the red zone 37c3 of the warning area display section 37c as shown in FIG. 1B based on the data of the operating temperature range received from the machine controller 31.
[0044]
(Step 8-5)
Displays a screen that informs you of a change in tool settings.
[0045]
(Step 9)
When the setting is completed, the new tool name is displayed and the screen automatically returns to the normal screen.
[0046]
As described above, since the range of the warning area such as the red zone 37c3 of the warning area display sections 35c, 36c, and 37c provided along the current value display sections 35b, 36b, and 37b is made variable, the warning area is changed. Even in such a case, the viewer can appropriately recognize whether or not the current measurement value is in a state to warn.
[0047]
In addition, by displaying the warning area display sections 35c, 36c, and 37c with liquid crystal, the range of the warning area such as the red zone 37c3 can be easily changed to meet a wide range of user needs.
[0048]
Furthermore, only by selecting one of the plurality of options displayed on the display 28, the aircraft controller 31 causes the warning area display sections 35c, 36c, and 36c to display the selected option and the registered data corresponding to the selected option. Since the range of the warning area such as the red zone 37c3 of 37c is automatically changed, the range of the warning area can be easily and appropriately variably controlled.
[0049]
For example, when the tool such as the bucket 23 of the excavator is replaced with another tool such as a breaker, the aircraft control controller 31 selects only one of the plurality of tools displayed on the display 28, and Automatically changes the range of the hydraulic oil temperature red zone 37c3 based on the selected tool and the registered data corresponding to the selected tool, so that the operator of the excavator can automatically set the red zone 37c3 appropriately according to the tool. The operating oil temperature can be monitored while comparing with.
[0050]
Specifically, when the bucket 23 is used as a tool, the lower limit of the operating oil temperature red zone 37c3 is set to 100 ° C., and when a breaker is used as a tool, the lower limit of the operating oil temperature red zone 37c3 is set to 100 ° C. Set lower temperature.
[0051]
Next, FIG. 4 shows a display panel section 33a displaying the fuel gauge 35, the water thermometer 36, and the oil thermometer 37 in a bar graph shape, and a warning area display section 35c at a position adjacent to the symbol icons 35a, 36a, 37a. 36c, 37c are arranged in a straight line, and current value display sections 35b, 36b, which display current measured values (remaining fuel amount, water temperature, oil temperature) along these warning area display sections 35c, 36c, 37c. 37b are linearly arranged.
[0052]
Although the symbol icons 35a, 36a, and 37a are fixed marks, the current value display sections 35b, 36b, and 37b arrange a plurality of liquid crystal segments in a straight line, and display the current measured values (remaining fuel amount, water temperature, oil amount). In this case, the number of liquid crystal segments corresponding to (temperature) is displayed by coloring.
[0053]
Each of the warning area display sections 35c, 36c, and 37c displays whether or not the current measurement value is at least in the warning area. These warning area display sections 35c, 36c, and 37c also include a plurality of liquid crystal displays. By arranging segments in a straight line, the range of the warning area is made variable.
[0054]
For example, the warning area display portion 37c of the oil temperature gauge 37 includes a low temperature area 37c1 for indicating the necessity of warming-up to the operator because the oil temperature is too low, and an appropriate temperature area indicating that the oil temperature is within an appropriate range. 37c2 and a red zone 37c3 as a warning area for alerting the operator because the oil temperature is too high are color-coded by a plurality of liquid crystal segments capable of changing coloring (for example, white, green, red, etc.). Is formed.
[0055]
Therefore, for example, by changing the coloring of the liquid crystal segment on the side of the appropriate temperature region 37c2 to the warning region at the boundary between the appropriate temperature region 37c2 and the red zone 37c3, for example, by changing from green to red, As shown in FIG. 4, the red zone 37c3 can be expanded to the low temperature side.
[0056]
Such a change in the range of the warning area can be similarly performed not only with the oil thermometer 37 but also with the fuel gauge 35 and the water thermometer 36. It is also possible to expand the range of the white portion indicating "low fuel level" upward.
[0057]
In the illustrated embodiment, the gauge in the display of the excavator is displayed by a full graphic liquid crystal, but the current value display sections 35b, 36b, and 37b are not limited to the liquid crystal segments. The pointer may be mechanically movable.
[0058]
【The invention's effect】
According to the first aspect of the present invention, the range of the warning area of the warning area display section provided along the current value display section is variable, so that even if the warning area is changed, the current measurement is performed. The viewer can appropriately recognize whether the value is in a state to warn or not.
[0059]
According to the second aspect of the present invention, by displaying the warning area display section with liquid crystal, the range of the warning area can be easily changed and a wide range of user needs can be met.
[0060]
According to the third aspect of the present invention, only by selecting one of the plurality of options displayed on the display, the controller displays the warning area based on the registered data corresponding to the selected option. Since the range of the warning area is automatically changed, the range of the warning area can be easily and appropriately variably controlled.
[0061]
According to the invention as set forth in claim 4, when the tool of the excavator is replaced, only one of the plurality of tools displayed on the display is selected, and the controller determines the selected tool. Hydraulic excavator operators monitor the hydraulic oil temperature while comparing it to the automatically set warning area according to the tool, as the range of the hydraulic oil warning area is automatically changed based on the corresponding registered data. can do.
[Brief description of the drawings]
FIG. 1A is a front view showing an embodiment of a display and a display control device according to the present invention, and FIG. 1B shows an example of changing a range of a warning area in a warning area display section of the oil meter. FIG.
FIG. 2 is a flowchart illustrating an example of a control procedure performed by the display control device.
FIG. 3 is a flowchart showing a control procedure between step 8 and step 9 in the flowchart.
FIG. 4 is a front view showing another embodiment of the display device according to the present invention.
FIG. 5 is a side view of a hydraulic shovel related to the present invention.
FIG. 6 is a perspective view showing an internal configuration of a cab of the hydraulic excavator.
[Explanation of symbols]
28 Display 31 Aircraft controller 37b as controller Current value display 37c Warning area display 37c3 Red zone as warning area

Claims (4)

A current value display section for displaying a current measurement value,
A warning area display section provided along the current value display section for displaying whether or not the current measurement value is at least in the warning area, and having a variable warning area range. The display device according to claim 1, wherein the warning area display section is displayed by a liquid crystal. A display according to claim 1 or 2,
A controller for instructing the display unit to change the range of the warning area of the warning area display unit based on the registered data corresponding to the selected option by selecting one of the plurality of options displayed on the display unit. A display control device comprising: Indicators and controls are mounted on the excavator,
The choices are the types of tools that are interchangeably mounted on the excavator,
The display control device according to claim 3, wherein the measured value is a hydraulic oil temperature of a hydraulic shovel.

Images