JP2002275949A - Information display and display control device for construction machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an information display and a display cotnrol device for a construction machine, which allow complex and selective display of a plurality of types of information items, and to improve the efficiency of information grasp by the operator. SOLUTION: The information display 47 is arranged in a driving cab of a hydraulic excavator 1, and includes a display section 471 capable of displaying a plurality of information items such as chassis information and maintenance information. The display section 471 consists of a main display region 1000 having a single main screen, and a sub-display region 2000 having a plurality of sub-screens. The main screen of the main display region displays a single information category in detail out of a plurality of information categories inclusive of an image picked up by a rear monitor camera 60. The sub-screens of the sub-display region correspond to the respective information categories, and representative information items in the respective information categories are displayed in the sub-screens corresponding to the respective information categories other than the information category displayed in the main screen in detail. Further, the information category displayed in the main screen of he main display region 1000 can be selected and switched by key operation of a console panel 470.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a construction machine information display device, and more particularly, to a construction machine provided in a cab of a construction machine having a front working machine and capable of displaying a plurality of information such as vehicle body information and maintenance information. And a display control device for the information display device.

[0002]

2. Description of the Related Art In recent years, construction machines have been digitized due to performance improvement and multi-functionality, and electronic control devices have been developed and installed for each function for the purpose of improving body information management, construction efficiency, or maintenance. Have been. Each of these electronic control devices has an information providing device for an operator, and accordingly, the information providing device in the cab (cab) is diversifying and increasing. As a result, the burden on the operator increases due to the increase in information to be monitored and the complexity of the operation, and the increase in the number of electronic control devices makes it difficult to mount the device in a limited cabin space. Due to the development and mounting of the information providing device, the cost is increased. In order to solve these problems, a display device that collectively displays a plurality of types of information on one display screen is being studied.

For example, Japanese Patent Application Laid-Open No. Hei 5-288648 discloses a management monitor device which has a plurality of display modes for operating information and maintenance information of a vehicle body and which can switch display contents by operating a switch.

[0004] JP-A-5-287782, a display unit and a switch unit provided in a display panel, a combination of the monitored illustrations and numerical information of the excavator simulating the drilling conditions of the excavator, such as excavators There is disclosed a multi-function display monitor system capable of switching the display content of information related to the front posture by operating a switch.

Further, Japanese Patent Application Laid-Open No. 10-103925 discloses an excavation control method using an excavation information monitoring device of an excavator that switches display contents by a touch panel.

[0006]

[0005] In construction machines, information providing devices in the cab are diversifying and increasing for the purpose of managing vehicle body information, improving construction efficiency, or improving maintainability. For this reason, a display device that collectively displays a plurality of types of information on one display screen has been studied, but there are some problems in present information display.

In the monitor device disclosed in Japanese Patent Application Laid-Open No. 5-288648, a plurality of display modes are switched and selected according to the state of the vehicle or an operation instruction, and corresponding display contents are displayed on one screen according to the selected mode. Will be displayed. However, since the display contents of the screen are completely switched by switching the display mode, it is not possible to simultaneously browse a plurality of pieces of information, for example, displaying maintenance information while displaying operation information.

[0008] Similarly, the monitor devices disclosed in JP-A-10-103925 and JP-A-5-287782 simultaneously display only information of a single function such as body information of an excavator on one screen. Is displayed, and the display content is switched by switching the entire screen.

Further, since these monitoring devices are mounted in the cab as devices independent of a normal instrument panel, an operator must pay attention to both the normal instrument panel and these monitoring devices depending on the situation. There were also problems from the viewpoint of operability and safety.

An object of the present invention is to provide a construction machine information display device and a display control device capable of displaying a plurality of types of information in a complex and selective manner and improving the efficiency of information grasping by an operator. To provide.

[0011]

(1) In order to achieve the above object, the present invention is provided in a cab of a construction machine having a front working machine, and can display a plurality of information such as vehicle body information and maintenance information. In the information display device for a construction machine having a simple display unit, the display unit includes a main display area and a sub-display area, and the main display area displays information of one information category among a plurality of information categories in detail. A main screen to be displayed, wherein the sub-display area displays, for at least one of the plurality of information categories other than the information category in which information is displayed in detail on the main screen, representative information in the information category Have multiple sub-screens,
An information category to be displayed on the main screen of the main display area and a plurality of sub-screens of the sub-display area can be selected / switched by operating an input unit, and a plurality of main categories of the main display area and the plurality of sub-display areas can be selected. It is assumed that a camera image is included as one of a plurality of information categories displayed on the subscreen.

As described above, the main display area and the sub display area are provided, a plurality of sub screens are provided in the sub display area, a plurality of information categories are displayed by detailed display and simplified display, and the display information can be switched. By allowing a plurality of types of information to be displayed in a complex and selective manner, including camera images in a plurality of information categories, and allowing the camera images to be displayed on the main screen in the main display area,
Surrounding conditions such as confirmation of safety behind can be visually grasped by the camera image, and the efficiency of information grasping by the operator can be improved.

(2) In the above (1), preferably,
The sub-screen of the sub-display area corresponding to the information category in which the information is displayed in detail on the main screen of the main display area is a guide when switching the information category by operating the input unit.
An illustration of the operation guide simulating the arrow keys is displayed.

[0014] This makes it possible to easily switch the information category displayed in the main display area by operating the input means.

(3) In the above (1), preferably, the plurality of sub-screens of the sub-display area have a role of an index tag of an information category to be displayed on the main screen of the main display area. Design and layout imitating the index tag for the area.

By using the sub-screen as a heading,
Information categories to be displayed in the main display area can be easily selected.

(4) In order to achieve the above object,
The present invention provides a display control device for a construction machine information display device provided in a cab of a construction machine having a front working machine and having a display unit capable of displaying a plurality of information such as vehicle body information and maintenance information. The display unit of the apparatus includes a main display area having one main screen and a sub-display area having a plurality of sub-screens, and the main screen in the main display area has information of one of a plurality of information categories. Is displayed in detail on a plurality of sub-screens of the sub-display area, and for at least one of the plurality of information categories other than the information category in which information is displayed in detail on the main screen, representative information within the information category And an information category to be displayed on a main screen of the main display area and a plurality of sub-screens of the sub-display area by operating the input means. Switching means, and an input section for a camera image, wherein the arithmetic control means is provided as one of a plurality of information categories to be displayed on a main screen of the main display area and a plurality of sub-screens of the sub-display area. It is assumed that a camera image is displayed.

Thus, as described in the above (1), a plurality of types of information including the camera image can be displayed in a complex and selective manner, and the efficiency of the operator's information grasp can be improved.

[0019]

Embodiments of the present invention will be described below with reference to the drawings. <First Embodiment> First, a first embodiment of the present invention will be described with reference to FIGS.

<Mechanism / Hydraulic System / Electronic Circuit / Operation of Hydraulic Excavator> FIG. 1 shows an electronic control system of a hydraulic excavator provided with an information display device according to a first embodiment of the present invention. It is a figure shown with the hydraulic system mounted.

In FIG. 1, a hydraulic excavator 1 includes a traveling body 2, a swing body 3, and an excavation work device (front work machine) 7. The excavation work device 7 is provided with a boom 8 provided on the revolving unit 3 so as to be able to move up and down, an arm 9 provided rotatably on a tip of the boom 8, and a rotatable provided on a tip of the arm 9. A bucket 10, a hydraulic cylinder 11 for boom operation for raising and lowering the boom 8, a cylinder 12 for arm operation for rotating the arm 9, and a cylinder 13 for bucket operation for rotating the bucket 10. ing.

[0022] The turning body 3 is the engine 14 and the hydraulic pump 18
And a storage room 4 for hydraulic equipment and the like, and an operator's cab 6 is provided on the front left side of the revolving unit 3.

The engine 14 has an electronic governor device 15 for maintaining the rotation speed within a certain range. Target revolution speed Nr of the engine 14 is set by the target speed setting unit 16.

The hydraulic pump 18 is driven to rotate by the engine 14. The hydraulic pump 18 is a variable displacement pump, and has a swash plate 19 for changing the discharge amount. The swash plate 19 is connected to a discharge amount adjusting device 20.
The pressure detector 22 for detecting a delivery pressure Pd of the swash plate position sensor 21 and the hydraulic pump 18 for detecting the tilting position θ of the swash plate 19 is provided.

Hydraulic cylinder 11 for boom operation, cylinder 12 for arm operation, cylinder 13 for bucket operation
Are connected to the hydraulic pump 18 via control valves 24, 25, 26, respectively, and the flow rates and directions of the hydraulic oil supplied from the hydraulic pump 18 to the respective cylinders 11, 12, 13 are adjusted by the control valves 24, 25, 26. Is done. Control valves 24, 25,
26, operating levers 27, 28, 29 are provided, and operating levers 27, 28, 29 are provided with lever actuators 30, 31,.
32, and these lever actuators 30, 31, 3
2 denotes operation signals X1, X of operation levers 27, 28, 29
As X2 and X3, an electric signal corresponding to the operation amount is output.

The excavator 7 has a rotation angle α of the boom 8.
Boom rotation angle detector 34 for detecting rotation angle, arm rotation angle detector 35 for detecting rotation angle β of arm 9, bucket 10
Is provided with a bucket rotation angle detector 36 for detecting the rotation angle γ.

A first control unit 17, a second control unit 23, a third control unit 33, and a fourth control unit 37 are provided to control each part of the hydraulic excavator. A first monitor unit 45, a second monitor unit 46, and an information display device 47 are provided to provide inside and outside information to an operator. The first to fourth control units 17, 23, 33, 37, the first and second monitor units 45, 46, and the information display device 47 are connected by a common communication line 40, and transmit and receive data to and from each other.

The first control unit 17 controls the engine 14 and inputs a target rotation speed Nr from the target rotation speed setting device 16 and an actual rotation speed Ne detected by the governor device 15 to a predetermined value. The operation is performed, and a control signal R is output to the governor device 15. As a result, the engine 14 sets the actual rotational speed Ne to the target rotational speed Nr of the target rotational speed setter 16.
Is controlled to match.

The second control unit 23 includes a hydraulic pump 18
The discharge pressure Pd of the hydraulic pump 18 detected by the pressure detector 22 and the swash plate position detector 2
1, the tilt position 19 of the swash plate 19 and the operation signals X1 to X7 from the third control unit 33 are input to perform a predetermined calculation, and the discharge amount adjusting device 2 of the hydraulic pump 18 is operated.
The control signal for the swash plate 19 is output to 0. Thereby, the discharge amount of the hydraulic pump 18 is controlled via the discharge amount adjusting device 20.

The third control unit 33 includes control valves 24, 2
5 and 26, and a lever actuator 30, 3
The electric signals from the control valves 24, 25, and 26 are inputted to the control units 24 L, 24 R, 24 R,
Control signals are output to 25L, 25R, 26L, and 26R. Thereby, the positions of the control valves 24, 25, 26 are controlled in accordance with the operation signals X1, X2, X3 of the operation levers 27, 28, 29, and the respective cylinders 11, 12, 1 are controlled.
The flow rate and the flow direction of the pressure oil supplied to 3 are controlled.

Further, a turning operation lever device (not shown), a traveling operation lever device, and an attachment operating lever device are provided, and the third control unit 33 controls the turning operation signal X4 by these operation lever devices. The operation signals X5 and X6 for right and left traveling and the operation signal X7 for attachment are inputted, predetermined arithmetic processing is performed, a control signal is output to a control valve (not shown), and supplied to each actuator (not shown). Controls the flow and direction of pressurized oil.

The fourth control unit 37 includes the excavating work device 7
And rotation angle detectors 34, 35, 36
Signals of rotation angles α, β, γ from
Operating signal X of operating lever devices 27, 28, 29 from
, X2, and X3, and performs predetermined arithmetic processing to correct the operation signals X1, X2, and X3.
3 outputs the control drive commands Yα, Yβ, Yγ. Accordingly, the control valves 24, 25, and 26 are controlled, and the operation trajectory of the excavation work device 7 is controlled.

The engine 14 has a hydraulic pressure sensor 4 for measuring a pressure Poil of lubricating oil (engine oil).
The radiator 51 for cooling the cooling water of the engine is provided with a water temperature sensor 42 for detecting a cooling water temperature Tw. Each signal of the engine oil pressure Poil and the cooling water temperature Tw detected by the sensors 41 and 42 is input to the first control unit 17.

Further, as a sensor for monitoring the state of each part of the body of the hydraulic excavator 1, a fuel level sensor 43 for measuring a fuel level (fuel remaining amount) Fuel,
A pressure sensor 44 for detecting a filter pressure Pfit for detecting clogging of a filter 50 provided in a circuit of the hydraulic system, an oil temperature sensor 56 for detecting a temperature To of hydraulic oil of the hydraulic system, and a tilt angle 車体 of a vehicle body. A tilt sensor 49 is provided, and signals of the fuel level Fuel, the filter pressure Pfit, and the operating oil temperature To detected by the sensors 43 and 44 are input to the first monitor unit 45, and the sensor 5
The signal of the hydraulic oil temperature To detected at 6 is input to the second control unit 23, and the signal of the vehicle body tilt angle 検 出 detected by the tilt sensor 49 is input to the fourth control unit 37.

The first monitor unit 45 includes the sensor 4
Fuel level Fuel detected at 3, 44, Filter pressure Pf
To send the information of it to the information display device 47. If there is an instrument panel in the cab 6, the information is displayed on the instrument panel.

The second monitor unit 46 receives detection data (described later) from the first control unit 17, the second control unit 23, and the first monitor unit 45 via the communication line 40, and transmits these data. By performing the processing, the abnormality detection history, the operation time of the machine, the operation state, and the like are measured and stored in a time-series or statistical manner, and the information is transmitted to the information display device 47.

The information display device 47 receives various information (described later) from the first to fourth control devices 17, 23, 33, 37 and the first and second monitor units 45, 46 via the communication line 40. And display their information. Further, the information display device 47 has a function of instructing the fourth control unit 37 on a target work locus of the excavation work device 7.

A rear monitoring camera 60 is provided at the rear part of the body of the hydraulic excavator 1 (the rear part of the revolving unit 3).
The camera image is output to the information display device 47 as a video signal.

<Information Display Device> FIG.
Is shown. The information display device 47 includes an operation unit 470 as input means, a display control unit 471, and a display unit 472 including a screen such as an LCD.

The operation unit 470 is provided with up and down arrow keys 470a, which are pressed when the operator wants to switch the display.
470b and left and right arrow keys 470c, 470d
And various switches, such as numerical input keys 470e and 470f for increasing and decreasing, which are pressed when inputting a control target value, and a mode switch (not shown).

The display control unit 471 includes an interface 471a for inputting a signal from the operation unit 470, and an interface 471 for inputting a video signal from a rear monitoring camera provided at the rear of the body of the excavator 1.
g, a central processing unit (CPU) 471b, a read-only memory (ROM) 471c for storing a control procedure program and constants necessary for control, and a random access memory (RA) for temporarily storing a calculation result or a numerical value during calculation.
M) 471d, output interface (I / F) 4
71e, the first to fourth control devices 17, 23, 33, 37 connected to the common communication line 40, and the first and second control devices.
And a communication control unit 471f for controlling communication between the monitor units 45 and 46.

The information display device 47 is arranged in the cab 6. Further, the operation unit 470, the display control unit 471, and the display unit 472 of the information display device 47 are preferably separately provided,
The display unit 472 is attached to a position in the driver's cab 6 where the operator can easily see, for example, a driver's cab corner obliquely rightward from the driver's seat.

<Communication Data of Common Communication Line> FIG. 3 shows details of communication data transmitted and received between the control unit and the monitor unit via the common communication line 40 in a table format. In the figure, “ID No” is an identification number assigned to each data. The circles indicate data transmitted by each control unit or monitor unit. ● mark indicates the reception data of the control units or monitoring units. The cycle indicates an interval at which the control unit transmitting the data communicates the data, that is, a time interval at which the data is updated. The information display device 4 is used during "display operation" during the cycle.
Instruction button (not shown) provided on the operation unit 470
Means that a signal is transmitted to the information display device 27 only when is operated.

Further, the second monitor unit 46 is provided with the first monitor unit 46.
The data of the actual engine speed Ne, the engine oil pressure Poil, and the cooling water temperature Tw from the control unit 17 of the second
The data of the pump discharge pressure Pd, the pump tilt angle θ, and the hydraulic oil temperature To are transmitted from the control unit 23 to the third control unit 3.
3 to operation signal X2 for arm and operation signal X for turning
4. The operation signals X5 and X6 for right and left traveling and the operation signal X7 for attachment are received from the first monitor unit 45, and the data of the fuel level Fuel and the filter pressure Pfit are received from the first monitor unit 45, respectively. The second monitor unit 23 uses these data to detect the abnormality detection history HisW, the operation time (key ON) T
mwKey, operation time (engine ON) TmwEng, operation time (excavation) TmwExc, operation time (running) TmwRun, operation time (turn) TmwRot, operation time (ML) TmwM
L, operating time (ATT) TmwATT, engine speed frequency distribution HistEng, cooling water temperature frequency distribution HistTw, hydraulic oil temperature frequency distribution HistTo, pump load frequency distribution HistPld, excavation load frequency distribution HistEld
The information is transmitted to the information display device 47 together with the information of the time Time by the RTC (clock function) built in the monitor unit 23 of FIG.

Here, the data of the abnormality detection history HisW is
Created from data such as engine oil pressure Poil, cooling water temperature Tw, pump discharge pressure Pd, etc., and operating time (key ON)
TmwKey is calculated by the power ON time of the second monitor unit 46, the operation time (engine ON) TmwEng is calculated by the ON time of the engine speed Ne, and the operation time (digging) TmwExc is the ON of the operation signal X2 for the arm. The operating time (running) TmwRun is calculated by the ON time of the left and right operation signals X5 and X6, and the operating time (turning) TmwRot is calculated by the ON time of the turning operation signal X4. (ML) TmwML are not shown M
The operation time (ATT) TmwATT is calculated based on the ON time of the signal of the L mode switch, and the ON time of the attachment operation signal X7 is calculated.

The engine speed frequency distribution HistEng
Is generated by performing frequency distribution processing on the data of the engine rotation speed Ne, and the cooling water temperature frequency distribution HistTw is obtained by the cooling water temperature Tw.
The hydraulic oil temperature frequency distribution HistTo is created by subjecting the data of the hydraulic oil temperature To to a frequency distribution processing, and the pump load frequency distribution HistPld is created by performing the frequency distribution processing of the hydraulic oil temperature To data.
Is created by frequency distribution processing data pump discharge pressure Pd, digging load frequency distribution HistEld is created by the operation signal X2 for the arm to the frequency distribution processing data of the pump discharge pressure Pd at ON.

The information display device 47 displays data of the actual engine speed Ne, engine oil pressure Poil, and cooling water temperature Tw from the first control unit 17, and data of the hydraulic oil temperature To from the second control unit 23. The control drive commands Yα, Yβ, Yγ, boom, arm, and bucket rotation angles α, β, γ, bucket tip depth (height) hx, and bucket tip reach hy from the fourth control unit 37. , The fuel level Fuel from the first monitor unit 45,
The data of the filter pressure Pfit are received from the second monitor unit 47, respectively, and are switched and appropriately combined and displayed.

<Screen Display Example> Display on the display unit 472 (FIG. 2) of the information display device 47 will be described with reference to FIGS.

[0049] In FIGS. 4-7, at the same time to display the information of a plurality of information categories on the display screen of the display unit 472.
At that time, in detail the one category of information of the plurality of information categories, the information of other categories are displayed in a simplified manner. Which information category is displayed in detail can be sequentially switched by an operator's key operation of the operation unit 470 (FIG. 2).

The display screen includes a main display area 1000 and a sub display area 2000. The main display area 1000 is an area for detailed display, and the sub display area 2000 is an area for simplified display.

In FIG. 4, the main display area 1000 includes one main screen 1002, and the sub display area 2000 includes the same number of sub screens 2005, 2006, and 200 as the number of information categories.
3,2004. Each sub-screen corresponds to each information category.

Similarly, in FIG.
0 is composed of one main screen 1001 and the sub display area 200
0 is the same number of sub-screens 2001 to 2004 as the number of information categories
In FIG. 6, the main display area 1000 includes one main screen 1003, and the sub display area 2000 includes the same number of sub screens 2001, 2006, 200 as the number of information categories.
7, 2004, and in FIG.
00 is composed of one main screen 1004 and the sub display area 20
00 is the same number of sub-screens 2001 and 200 as the number of information categories.
6, 2003, 2008. Each sub-screen corresponds to each information category.

On the main screens 1001 to 1004, information of each information category is displayed in detail.

A sub-screen 2002 corresponding to an information category in which information is displayed in detail on main screens 1001 to 1004
2005, 2007, and 2008 display the names of information categories and illustrations 80 and 81 of operation guides for operators. The illustrations 80 and 81 of the operation guide are the operation unit 47
The key is used as a guide when the information category is switched by the key operation of “0”.
a, 470b (FIG. 2).
Other sub-screens 2006, 2003, 2004 (FIG. 4), 2001, 2003, 2004 (FIG. 5), 200
1, 2006, 2004 (FIG. 6), 2001, 200
6, 2004 (FIG. 7), the information of each corresponding information category is simply displayed.

Subscreens 2005, 2006, 2003, 2
004 (FIG. 4), 2001 to 2004 (FIG. 5), 200
1, 2006, 2007, 2004 (FIG. 6), 200
1, 2006, 2003, 2008 (FIG. 7) are arranged so as to also serve as index tags (headings) of the respective information categories, and are designed and laid out to imitate the index tags for the main display area 1000.

The operation and screen switching when the operator switches the information category displayed in the main display area 1000 will be described by taking as an example the case where the screen display example shown in FIG. 5 is switched to the screen display example shown in FIG.

When the operator switches the information category displayed in main display area 1000, instead of sub-screen 2002 corresponding to the currently selected information category,
By newly selecting the sub-screen 2001 corresponding to the desired information category, the information category to be displayed in detail in the main display area 1000 can be switched. The selection can be made by operating the upward arrow key 470a (FIG. 2) using the illustration 80 of the operation guide as a guide (described later).
At this time, the sub-screen 200 of the newly selected information category
The information which has been simply displayed in 1 is moved to the main screen 1002 and displayed in detail. Instead, the sub-screen 2005 displays the name of the selected information category and the illustration 80 of the operation guide for the operator. Further, the detailed information of the main screen 1001 of the information category selected so far is shifted to the simplified display of the sub screen 2006 after the screen switching.

Next, an example of a display screen of the display unit 472 will be described.

[0059] In the present embodiment, as the information category,
Four types of instrument information, vehicle body posture information, operation information, and camera images of the rear camera 60 are set as shown in FIGS.
The contents of the display screen when each information category is selected will be described below.

<< Category A >> In FIG. 4, a main screen 1002 of the display screen is a screen corresponding to an instrument panel, and includes an engine speed 1200, a cooling water temperature 1201, and a hydraulic oil temperature 1
202, the fuel level 1203 is displayed by a numerical value, a circular meter, and a bar meter. The sub-screen 2005 displays the operation guide of illustrations 80 names and operator f categories of information that has been selected. Subscreen 2006, 2003, 200
Reference numeral 4 denotes a simplified version of the information in each information category corresponding to the vehicle body posture information, the operation information, and the rear monitoring camera image. The sub-screen 2006 displays the bucket posture and the tip position by numerical values and illustrations. The sub screen 2003 displays an abnormal item when an abnormality occurs. The sub screen 2004 displays the rear monitoring camera image in a reduced size.

<Category B> In FIG. 5, the main screen 1001 of the display screen is a screen for displaying the bucket posture and the vehicle body posture. The vehicle body left-right tilt angle 1100, the bucket rotation angle 1101, and the bucket height 1102 are shown by numerical values and the actual machine. The whole image or an illustration of each part is displayed. Subscreen 2
002 displays the name of the selected information category and illustrations 80 and 81 of the operation guide for the operator. The sub-screens 2001, 2003, and 2004 display simplified information of each information category corresponding to the instrument information, the operation information, and the abnormality warning information, respectively. The sub-screen 2001 displays the cooling water temperature, the working oil temperature, and the fuel level with a needle meter. The sub-screens 2003 and 2004 are the same as described above. This is the same in the following.

<Category C> In FIG. 6, a main screen 1003 of the display screen is a screen for displaying operating time information.
Key ON time 1300, Engine ON time 1301, Excavation time 1302, Travel time 1303, Turning time 130
4. The ML crane operation time 1305 and the attachment operation time 1306 are displayed by numerical values and bar type meters. In addition, when an abnormality occurs, an illustration 1307 imitating a warning light associated in advance is displayed according to the content of the abnormality, based on the abnormality warning information obtained through communication, to notify the operator. At the same time, the content of the abnormality is displayed as a simple message 1308. When information indicating that the corresponding abnormality has been resolved is obtained by communication, the display of the illustration associated with the abnormality and the message indicating the abnormality is stopped. Subscreen 2
007 displays the operation guide of the illustrations 80 and 81 of the name and the operator f categories of information that has been selected. The sub-screens 2001, 2006, and 2004 display simplified information of each information category corresponding to the instrument information, the vehicle body posture information, and the rear monitoring camera image, respectively.

<Category D> In FIG. 7, a main screen 1004 of the display screen is a screen for displaying an image of the rear monitoring camera. The sub-screen 2008 displays the name of the selected information category and the illustration 81 of the operation guide for the operator. The sub-screens 2001, 2006, and 2003 respectively display instrument information, operation information, and simplified information of each information category corresponding to the operation information.

<Explanation of Screen Display Processing> The processing contents of the display control section 471 (FIG. 2) of the information display device 47 for performing the above-mentioned screen display will be described using display state flags. Any of the information category names A, B, C, and D is set in the display state flag. FIG. 8 shows the processing flow.

(1) STEP 10001: First, when the information display device 47 is started, a display state flag indicating which information category is currently selected is set to A, that is, instrument information. That is, the initial state is set to category A. (2) STEP 10002: Up and down arrow keys 470a and 470b of the operation unit 470 provided in the information display device 47
It is determined whether any of (FIG. 2) has been pressed. If pressed, the process proceeds to STEP 10003; otherwise, the process proceeds to STEP 10004. (3) STEP10003: pressed in accordance with the arrow keys to execute a process block 10010 for switching the display state flag.

(4) STEP 10004: A processing block 10020 for performing main screen display processing is executed. (5) STEP10005: Execute block 10030 for performing sub-screen display processing 1 (display processing of the sub-screen corresponding to the information category selected by the display state flag). (6) STEP10006: The block 10040 for performing the sub-screen display process 2 (the process of displaying the sub-screen corresponding to the information category not selected by the display state flag) is executed. (7) STEP10007: Return to STEP10002 and repeat.

<Explanation of Processing Block 10010> A block 10010 performs processing for switching the display state flag in accordance with the pressed arrow key. FIG. 9 shows the processing flow.

(1) STEP10011: The pressed arrow key is an up arrow key 470a (hereinafter, appropriately represented by "↑").
Alternatively, it is determined which of the keys is the down arrow key 480b (hereinafter, appropriately indicated by “↓”). STEP10 for "↑"
The process proceeds to STEP10012b in the case of "012a" or "↓". (2) STEP10012a: When the display state flag is A, nothing is changed and the current state is maintained. In the case of B, C, and D, the display state flag is changed to A, B, and C, respectively. ST
The process proceeds to EP10013. (3) STEP10012b: If the display state flag is D, nothing is changed and the current state is maintained. In the case of A, B, and C, the display state flag is changed to B, C, and D, respectively. ST
The process proceeds to EP10013. (4) STEP10013: Block 10010 ends.

<Explanation of Processing Block 10020> Block 10020 performs main screen display processing according to the display state flag. FIG. 10 shows the processing flow.

[0070] (1) STEP10021: processing STEP10022a when the display state flags A, when B is S
STEP10022b processing, C in STEP1002
In the case of D, the processing of STEP10022d is performed.

(2) STEP 10022a: The engine speed, cooling water temperature, hydraulic oil temperature, and fuel level obtained by communication are graphically displayed using numerical values and units, as well as using a circular or bar type meter. The process proceeds to STEP10023.

(3) STEP10022b: First, the vehicle body left-right inclination angle obtained by communication is displayed in numerical values and units, and at the same time, the illustration of the vehicle body viewed from behind is rotated in accordance with the vehicle body left-right inclination angle obtained by communication. indicate. Next, the rotation angle of the bucket obtained by the communication is displayed in numerical values and units, and at the same time, the illustration of the bucket viewed from the side is rotated and displayed according to the bucket rotation angle obtained by the communication. Then displays the height of the bucket end position obtained by the communication with numerical and unit, and also displayed graphically superimposed illustration viewed bucket from the side in a horizontal line and a line perpendicular to it representing the same time reference plane height In this way, the height of the bucket is displayed in an easily understandable manner. STE
The process proceeds to P10023.

(4) STEP10022c: The operation information obtained by the communication is displayed. As the operation information, the key ON time, the engine ON time, the excavation time, the traveling time, the turning time, the ML crane operation time, and the attachment operation time, which are measured and managed by the second monitor unit 46, are displayed in numerical values and units. And the key ON time is 10
The relative ratio of each operation time other than the key ON time at 0% is graphically displayed using a bar-shaped graph having a length. In addition, when an abnormality occurs, an illustration 1307 imitating a warning light associated in advance is displayed according to the content of the abnormality, based on the abnormality warning information obtained through communication, to notify the operator. At the same time, the content of the abnormality is displayed as a simple message 1308. When information indicating that the corresponding abnormality has been resolved is obtained by communication, the display of the illustration associated with the abnormality and the message indicating the abnormality is stopped. The process proceeds to STEP10023.

(5) STEP10022d: An image obtained by inputting a video signal from the rear monitoring camera is once taken into a video memory, and is enlarged and reduced according to the position and size of the main screen area and displayed. The process proceeds to STEP10023. (6) STEP10023: The block 10020 is ended.

<Description of Processing Block 10030> Block 10030 performs display processing of a sub-screen corresponding to the information category selected by the display state flag. FIG. 11 shows the processing flow.

(1) STEP 10031: When the display state flag is A, the processing of STEP 10032a is performed, and when the display state flag is B, S is performed.
STEP1002b processing, STFP1003 for C
In the case of 2c, and in the case of D, the process of STEP 10032d is performed. (2) STEP 10032a: The information category name "instrument information" is displayed, and "↓" simulating the down arrow key 470d is displayed as the operation guide illustration 80 for the operator. The process proceeds to STEP 10033. (3) STEP 10032b: The information category name "vehicle posture information" is displayed, and the up and down arrow keys 470a, 47 are used as the operation guide illustrations 80, 81 for the operator.
“↑” and “↓” simulating 0b are displayed. STEP10
The process proceeds to 033.

(4) STEP 10032c: The information category name “operation information” is displayed, and the up and down arrow keys 47 are used as operation guide elasts 80 and 81 for the operator.
“↑” and “↓” simulating 0a and 470b are displayed. S
The process proceeds to TEP10033. (5) STEP10032d: The information category name "rear monitoring camera" is displayed, and "@" simulating the down arrow key 470b is displayed as the illustration 81 for the operation guide to the operator. To STEP10033 proceed. (6) STEP10033: The block 10030 is ended.

<Description of Processing Block 10040> A block 10040 performs display processing of a sub-screen corresponding to an information category not selected by the display state flag. FIG. 12 shows the processing flow.

(1) STEP 10041: If the display state flag is not A, the cooling water temperature and the hydraulic oil temperature are displayed by a needle-type meter illustration as a simplified display of the instrument information. The meter calculates the needle position based on the cooling water temperature and hydraulic oil temperature information obtained through communication, and updates the drawing sequentially. (2) STEP10042: If the display state flag is not B, the bucket tip position and the rotation angle are displayed in numerical values and units as simplified display of the vehicle body posture information. Further, the illustration of the bucket viewed from the side is sequentially rotated and displayed according to the rotation angle.

(3) STEP 10043: If the display state flag is not C, an anomaly warning information obtained by communication as a simplified display of operation information displays an illustration associated with the anomaly in advance according to the details of the anomaly when an anomaly occurs, and informs the operator. Inform. At the same time, the content of the abnormality is displayed by a simple message. When information indicating that the corresponding abnormality has been resolved is obtained by communication, the display of the illustration associated with the abnormality and the message indicating the abnormality is stopped. (4) STEP10044: If the display state flag is not D, an image obtained by inputting a video signal from the rear monitor camera is once taken into the video memory, and is enlarged or reduced according to the position and size of the sub-screen area and displayed. I do. (5) STEP10045: Block 10040 ends.

<Example of Operation and Example of Screen Transition in First Embodiment> As an example of operation in the first embodiment, a procedure for switching from the screen of the instrument information category A in the initial state to the screen of the operation information category C is shown. 13 will be described.

(1) The information category set in the display state flag in the initial state is A. Category A is displayed on the main screen. That is, the main screen 1002 is displayed. (2) Enter “↓”. As shown in FIG. 13, the display screen transitions downward. The information category set in the display state flag is B. Category B is displayed on the main screen and becomes main screen 1001. (3) Enter ↓. As shown in FIG. 13, the display screen transitions downward. The information category set in the display state flag is C. Category C is displayed on the main screen and becomes main screen 1003.

With the above procedure, the screen of the instrument information category A in the initial state can be switched to the screen of the operation information category C.

[0084] In addition, if the further switch the screen on the screen of the category D of the rear monitoring camera image is, if you enter the ↓,
As shown in FIG. 13, the display screen transitions downward, the information category set in the display state flag becomes D, and category D is displayed on the main screen to become main screen 1004.

<Effects of First Embodiment> According to the present embodiment configured as described above, the main display area 1000 having one main screen on the display screen of the display unit 472 of the information display device 47 is provided. Sub-display area 2000 having a plurality of sub-screens
Since multiple information categories are displayed by detailed display and simplified display and the display information can be switched,
A plurality of types of information can be displayed in a complex and selective manner, and the efficiency of information grasping by the operator can be improved.

Further, since the camera image can be displayed on the main screen of the main display area 1000, the situation of the surroundings can be visually grasped from the camera image, such as for confirming safety behind the vehicle. it is possible to improve the efficiency of information grasp.

Further, the sub display area 20 corresponding to the information category in which information is displayed in detail on the main screen of the main display area 1000
The sub screen 00 displays illustrations 80 and 81 of operation guides simulating arrow keys, which are used as guidelines when switching the information category by key operation of the operation unit 470. Of the information categories to be displayed can be easily performed.

Further, a plurality of sub-screens in the sub-display area 2000 have a role of an index tag of an information category displayed on the main screen of the main display area 1000.
Since the layout is designed and simulated as an index tag for, information categories to be displayed in the main display area 1000 can be easily selected by using the index tags as headings.

<Second Embodiment> A second embodiment of the present invention will be described with reference to FIG.

In the first embodiment, each control unit and monitor unit and the information display device are connected by one common communication line. However, in this embodiment, each control unit and monitor unit are connected to an independent communication line. It is connected to an information display device by a line.

In FIG. 14, the first to fourth control units 17, 23, 33, 37 and the first and second monitor units 45, 46 are provided with individual communication lines 90 to 9, respectively.
5 is connected to the information display device 47, and the information display device 4
Reference numeral 7 sends and receives data from the respective control units and monitor units via these communication lines 90 to 95. The information display device 47 includes an operation unit 470, a display control unit 471, and a display unit 472 (FIG. 2) similar to those of the first and second embodiments.
It has.

According to this embodiment, effects similar to those of the first and second embodiments can be obtained.

[0093]

According to the present invention, a plurality of types of information can be displayed in a complex and selective manner, and the efficiency of information grasping by the operator can be improved.

Further, since the camera image can be displayed on the main screen of the main display area and the sub-screen of the sub-display area, it is possible to visually grasp the surrounding situation, such as confirming safety behind, from the camera image. In this regard, the efficiency of information grasping by the operator can be improved.

According to the present invention, the sub-screen in the sub-display area corresponding to the information category in which the information is displayed in detail on the main screen in the main display area serves as a guide when the information category is switched by operating the input means. Since the illustration of the operation guide simulating the arrow keys is displayed, the information category displayed in the main display area can be easily switched by operating the input means.

Further, according to the present invention, the plurality of sub-screens in the sub-display area have a role of an index tag of an information category to be displayed on the main screen in the main display area, and are designed to imitate the index tags for the main display area. -Since the layout is used, the information category to be displayed in the main display area can be easily selected by using it as a heading.

[Brief description of the drawings]

FIG. 1 is a diagram showing an electronic control system of a hydraulic shovel including an information display device according to a first embodiment of the present invention, together with a hydraulic shovel and a hydraulic system mounted on the hydraulic shovel.

2 is a diagram showing a configuration of the information display device.

FIG. 3 is a diagram showing, in a table form, details of communication data transmitted and received between a control unit and a monitor unit via a common communication line.

FIG. 4 is a diagram showing instrument information displayed on a main screen of the information display device.

FIG. 5 is a diagram showing vehicle body posture information displayed on a main screen of the information display device.

FIG. 6 is a diagram showing operating time information displayed on a main screen of the information display device.

FIG. 7 is a diagram showing abnormality warning information displayed on a main screen of the information display device.

FIG. 8 is a flowchart showing a processing procedure of a screen display process of the information display device.

FIG. 9 is a flowchart showing a detailed processing procedure of a processing block 10010 shown in FIG. 8;

It is a flowchart showing a detailed processing procedure of the processing flocs 10020 shown in FIG. 10 FIG.

11 is a flowchart showing a detailed processing procedure of a processing block 10030 shown in FIG.

FIG. 12 is a flowchart showing a detailed processing procedure of a processing block 10040 shown in FIG. 8;

FIG. 13 is a diagram illustrating an example of screen transition according to the first embodiment.

FIG. 14 is a diagram illustrating an electronic control system of a hydraulic shovel including an information display device according to a second embodiment of the present invention, together with a hydraulic shovel and a hydraulic system mounted thereon.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Hydraulic excavator 2 Traveling body 3 Revolving body 6 Operator's cab 7 Excavation work device (front work machine) 8 Boom 9 Arm 10 Bucket 14 Engine 17 First control unit 18 Hydraulic pump 21 Swash plate position detector 22 Pressure detector 23 2 control units 24 to 26 control valves 27 to 29 operating lever 33 third control unit 34 boom rotation angle detector 35 arm rotation angle detector 36 bucket rotation angle detector 37 fourth control unit 40 common communication line 41 Oil pressure sensor 42 Water temperature sensor 43 Fuel level sensor 44 Pressure sensor 45 First monitor unit 46 Second monitor unit 47 Information display device 49 Inclination sensor 56 Oil temperature sensor 60 Rear monitor camera 80-86 Illustration of operation guide 470 Operation unit 470a ~470d arrow keys 471 display Control unit (display control unit) 472 display unit 1000 main display area 1001-1004 main screen 2000 secondary display region 2001 to 2008 sub-screen

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Hiroshi Watanabe 650 Kandamachi, Tsuchiura-shi, Ibaraki Hitachi Construction Machinery Co., Ltd. Tsuchiura Plant, Shikisha (72) Inventor Tsuyoshi Sakyo 650, Kandamachi, Tsuchiura-shi, Ibaraki Hitachi Construction Machinery Co., Ltd.F-term in Tsuchiura Plant (Reference)

Claims (4)

[Claims] 1. A construction machine information display device provided in a cab of a construction machine having a front working machine and provided with a display unit capable of displaying a plurality of information such as vehicle body information and maintenance information, wherein the display unit mainly comprises: The main display area includes a main screen for displaying information of one of the plurality of information categories in detail, and the sub display area includes the plurality of information categories. Among a plurality of information categories other than the information category in which the information is displayed in detail on the main screen, a plurality of sub-screens for displaying representative information in the information category; and a main screen in the main display area and the sub-screen. The information category to be displayed on the plurality of sub-screens of the display area can be selected and switched by operating the input means, and the main screen and the sub-display area of the main display area can be selected and switched. Information display system for a construction machine characterized in that it comprises a camera image as one of a plurality of information categories to be displayed into a plurality of sub-screens. 2. The information display device for a construction machine according to claim 1, wherein a sub-screen of a sub-display area corresponding to an information category in which information is displayed in detail on the main screen of the main display area is operated by the input means. It is a guide when switching the information category,
Information display system for a construction machine, characterized in that displaying the operation guide of illustration simulating the arrow keys. 3. The construction machine information display device according to claim 1, wherein the plurality of sub-screens in the sub-display area have a role of an index tag of an information category displayed on the main screen in the main display area. information display system for a construction machine characterized in that it is designed layout to resemble the index tag for display area. 4. A display control device of a construction machine information display device provided in a cab of a construction machine having a front working machine and provided with a display unit capable of displaying a plurality of information such as vehicle body information and maintenance information, The display unit of the display device includes a main display area having one main screen and a sub display area having a plurality of sub screens, and the main screen of the main display area has one of a plurality of information categories. The information is displayed in detail, and a plurality of sub-screens in the sub-display area are displayed on at least the information category other than the information category in which the information is displayed in detail on the main screen. An arithmetic control unit for displaying information; and selecting and switching an information category to be displayed on a main screen of the main display area and a plurality of sub-screens of the sub-display area by operating the input means. Switching means, and a camera image input unit, wherein the arithmetic control means is provided as one of a plurality of information categories to be displayed on a main screen of the main display area and a plurality of sub-screens of the sub-display area. A display control device for an information display device of a construction machine, which displays a camera image.