JP5554630B2 - Construction machine display device - Google Patents

Description

  The present invention relates to a display device for a construction machine, which is arranged in a cab of a construction machine such as a hydraulic excavator and makes an operator recognize various information.

  Various instruments are provided in a cab of a construction machine such as a hydraulic excavator so that an operator can check the state of the construction machine. Examples of such instruments include a cooling water temperature gauge, a hydraulic oil temperature gauge, a fuel fuel gauge, and an engine speed meter. In addition, an hour meter indicating the time during which the construction machine is operating, position information of the gate lock lever, and the like are also displayed as appropriate.

  In recent years, various types of information related to construction machines as shown in the above-described instruments are collectively displayed on a display device having a display unit such as a liquid crystal display. In such a display device, information such as the temperature of the cooling water, the temperature of the hydraulic oil, and the remaining amount of fuel is displayed during normal times (normally), but there is a type of information that is not always displayed. In this case, for example, when it is determined that an abnormality has occurred in the mechanism of the construction machine, information (abnormal information) such as the occurrence, type, and coping method is not displayed on the display unit and the operator is not notified. Must not.

  As a prior art related to such a display device for a construction machine, for example, when there is no change in the state of the work machine, a plurality of state display marks indicating the state of the work machine are displayed on the display screen, and the state of the work machine When a change occurs, the specific status display mark displayed at a specific display location among the display locations on the display screen is not displayed, and the state of the work machine is displayed at the specific display location. One that displays a state change display mark indicating a change is known (see Patent Document 1).

JP 2002-121776 A

  However, as in the prior art described in Patent Document 1, when the state of the work machine can be reported to the operator by displaying or not displaying the state change display mark, the operator is not aware of the state change display mark and the countermeasure is delayed. In addition, there is a problem that the importance of the information indicated by the display mark is not easily transmitted to the operator simply by displaying the state change display mark.

  The present invention has been made in view of the above, and it is possible for a construction machine that can make an operator more surely notice the occurrence of information and report the importance of dealing with the condition indicated by the information. An object is to provide a display device.

(1) To achieve the above object, the present invention is a construction machine provided in the cab, the first type information capable of displaying display unit which is information of the car body, for performing operations of the display unit a manipulation unit and a display device for a construction machine provided with a switching and part of the previous SL first type information and a second type information is a body of information to be displayed only at the occurrence be other information The display state of the second type information displayed on the display unit is changed according to the importance level of the second type information, and the importance level of the second type information is predetermined. If it is lower than that, it is possible to switch to the first type information by operating the operation unit, and when the importance is higher than a predetermined reference, it is impossible to switch to the first type information by operating the operation unit. And

  In this way, at least a part of the first type information and the second type information, which are information on the vehicle body that is always displayed on the display unit and checked by the operator, are switched and displayed, and the second type information When the importance level is low, it is possible to switch to the first type information, but when the importance level is high, the switching is impossible, and the display state of the information is changed according to the importance level of the second type information. The operator can be more surely aware of the occurrence of information, and can be notified of the urgency of dealing with the condition indicated by the information.

(2) In the above (1), preferably, the display color of the second type information is different depending on whether the importance of the second type information is higher or lower than a predetermined standard. To do.

(3) In the above (1) , preferably, the display unit can display third type information related to the second type information, and the third type information can be displayed according to the display of the second type information. Is displayed, and even if the display on the display unit is switched from the second type information to the first type information, the display of the third type information is continued.

(4) In the above (1), preferably, the first type information includes at least a camera image obtained from a camera installed in order to supplementarily obtain a visual field outside the cab. And the second type information are switched and displayed.

  According to the present invention, the operator can be more surely aware of the occurrence of information, and the presence / absence of urgency in dealing with the state indicated by the information can be reported.

1 is an external view of a hydraulic excavator shown as an example of a construction machine according to an embodiment of the present invention. It is a figure which shows schematically the system configuration | structure of the display apparatus concerning one embodiment of this invention with the related structure. It is a figure which shows schematically the basic composition of the display part in a display apparatus. It is a figure which shows schematically the basic composition of the operation part in a display apparatus. It is a figure which shows the screen of the display part in the normal time. It is a figure which shows the screen of a display part when 2nd type information generate | occur | produces. It is a figure which shows the screen of a display part at the time of switching 2nd type information to 1st type information. It is a flowchart which shows the detail of the display process which concerns on one embodiment of this invention.

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

  1 is an external view of a hydraulic excavator shown as an example of a construction machine according to an embodiment of the present invention.

  In FIG. 1, a hydraulic excavator (construction machine) includes a crawler-type lower traveling body 1, an upper revolving body 2 provided so as to be able to swivel with respect to the lower traveling body 1, and a front work machine 3 including excavation working means. It is roughly composed of

  Left and right traveling motors (not shown) are arranged on the lower traveling body 1, and the crawler is driven to rotate by the traveling motors, and travels forward or backward. The upper swing body 2 is provided with an operating device for a hydraulic excavator, a driver's cab 4 in which a driver's seat 5 on which an operator is seated, a prime mover such as an engine, a hydraulic pump, and a swing motor (not shown). The upper revolving unit 2 is revolved right or left with respect to the lower traveling unit 1 by the revolving motor. The front work machine 3 includes a boom 3a, an arm 3b, and a bucket 3c. The boom 3a is moved up and down by a boom cylinder 3d. The bucket 3c is operated to the dump side or the cloud side by the bucket cylinder 3f. In addition, a camera 6 is provided behind the upper swing body 2 (on the side opposite to the front work machine 3) for an operator to supplementarily obtain a visual field (rear visual field) outside the cab. Inside the cab 4 are provided a display unit 7 for displaying various information such as instruments related to a hydraulic excavator (construction machine), an operation unit 12 for performing various operations, and the like (see FIG. 2).

  FIG. 2 is a diagram for explaining an outline of the system configuration of the display device 8 and the functions of the information storage device 15, the engine control device 16, and the hydraulic control device 19 according to the embodiment of the present invention. FIG. 3 is a diagram illustrating the display unit 7 of the display device 8, and FIG. 4 is a diagram illustrating the operation unit 12.

  In FIG. 2, an engine control device 16 performs control related to engine operation, and performs arithmetic processing based on information from an engine control dial, an engine rotation sensor (not shown), or a vehicle body network 20 using CAN communication. The electronic governor is controlled using the result, or the state of the DPF in the vehicle body network 20 based on information from various DPF sensors 18 provided in a particulate matter removal filter (hereinafter simply referred to as DPF). Information (DPF information) is output. DPF reduces particulate matter (Particulate Matter: hereinafter simply referred to as PM) contained in exhaust gas discharged from a diesel engine, and collects PM contained in exhaust gas. The amount of PM discharged into the atmosphere is reduced. The DPF sensor 18 is, for example, a differential pressure sensor that detects a clogged state by detecting a differential pressure across the DPF. When the DPF switch 17 is operated, the engine control device 16 forcibly raises the temperature of the exhaust gas, forcibly removes the PM of the DPF, and recovers the collection ability (DPF regeneration process). As one of the DPF information output from the engine control device 16 to the vehicle body network 20, when it is determined that the PM amount has reached a certain amount (that is, the value from the DPF sensor 18 becomes a predetermined reference range) Information) prompting the execution of the DPF regeneration process. This includes low-priority DPF information that it is better to perform DPF regeneration processing and high-importance DPF information that requires DPF regeneration processing to be performed. The importance includes elements such as urgency. Note that the information output on the vehicle body network 20 includes two or more such as high importance and low importance depending on the degree of the state (PM accumulation amount, etc.) indicated by the information, such as the DPF information. For example, there is information with importance, and information such as overheat information where the state itself is very important and only has high importance. This is also true for information output on the vehicle body network 20 from other than the engine control device 16 such as the hydraulic control device 19.

  The hydraulic control device 19 controls the flow of pressure oil supplied from a hydraulic pump (not shown) to various hydraulic actuators of the hydraulic excavator, and outputs information such as operation status on the vehicle body network 20.

  The information storage device 15 collects information output from various control devices and the like on the vehicle body network 20 and records its operation information and the like.

  The display device 8 includes a display unit 7 that displays various types of information, a storage unit 10 that stores an image to be displayed on the display unit 7, an operation unit 12 that operates display on the display unit 7, and various types of information on the display unit 8. A key input device 13 such as a numeric keypad for inputting, a control / determination unit 9 for controlling the operation of the entire display device 8, and a communication unit 14 for communicating with the control / determination unit 9 and the vehicle body network 20 are provided. ing.

  The display unit 7 is constituted by, for example, a liquid crystal screen, and as shown in FIG. 3, a state display area 71 for displaying information on the state of the vehicle body (for example, work mode, ON / OFF state of various functions, etc.) 75, a water temperature gauge 72 indicating the engine cooling water temperature, a fuel fuel gauge 73 indicating the remaining amount of fuel, and an information display area for displaying vehicle body information (for example, an image 74a (camera image) from the camera 6). 74 is provided. Further, a menu screen or the like for executing various functions by operating the operation unit 12 is displayed as necessary.

  The storage unit 10 stores images to be displayed on the display unit 7 such as images relating to various instruments, images relating to the status display areas 71 and 75, the information display area 74, and the like.

  The operation unit 12 is disposed in the cab 4 and includes an operation switch 12a for performing various operations on the display device 8, a return switch 12b, and a basic screen return switch 12c. The operation switch 12a has a function as a rotary switch that rotates in the right direction (clockwise direction) and the left direction (counterclockwise direction) with respect to the board surface, and a momentary type switch that is ON only while pressed. As a rotary switch having both functions. The return switch 12b and the basic screen return switch 12c are momentary switches that are turned on only while being pressed. With respect to the display on the display unit 7, the operation switch 12a has a function of selecting by rotation and determining by pressing, the return switch 12b has a function of returning the display of the display unit 7 to the previous screen, and the basic screen return switch 12c has a basic function. Each has a function to return to the screen.

  The control / determination unit 9 includes information from the vehicle body network 20 input via the communication unit 14, information from the sensor 11 such as a fuel remaining amount sensor and a cooling water temperature sensor, image information from the camera 6, and a key input device 13. A predetermined calculation process is performed based on the input information from the control unit 12, the operation information from the operation unit 12, and the like, and a corresponding image is selected from the storage unit 10 and read out and displayed on the display unit 7.

  The control / determination unit 9 performs the following display process. That is, as a type of information (first type information) that is always displayed during normal times when information of a preset type (for example, DPF information or the like: second type information) is not generated, 73, information on the state of the vehicle body is displayed in the state display areas 71 and 75, information on the vehicle body (such as an image from the camera 6) is displayed in the information display area 74, and when the second type information is generated, the information display area The second type information image 74b (see FIG. 6 later) is displayed in place of the 74 vehicle body information, and the information is related to the second type information and briefly indicates the occurrence and contents thereof. A warning logo 70 (third type information) is displayed on the display unit 7.

Here, details of the display processing in the present embodiment will be described with reference to FIGS. 5-7 is a figure which shows an example of the screen displayed on the display part 7 of the display apparatus 8, and FIG. 8 is a flowchart of a display process. FIG. 5 is a diagram showing a basic screen in a normal state.
As shown as screen 1 in FIG. 5, only the first type information, which is the type of information that is always displayed, is displayed on the normal basic screen. That is, as the first type information on the normal basic screen, together with the water temperature gauge 72 and the fuel remaining amount gauge 73, the state display areas 71 and 75 include information on the state of the vehicle body, and the information display area 74 includes information on the vehicle body. An image 74a from the camera 6 is displayed. By operating the operation unit 12 in this state, a menu screen can be displayed and various functions can be executed.

FIG. 6 is a diagram showing a basic screen when DPF information is generated as the second type information.
As shown in screen 2 in FIG. 6, when the second type information is generated, at least a part of the first type information displayed on the display unit 7 is switched to the second type information, and the generation and contents thereof are briefly shown. The third type information which is information is displayed. In FIG. 6, information relating to the state of the vehicle body displayed in the water temperature gauge 72, the fuel remaining amount gauge 73, and the state display areas 71 and 75, which are displayed as the first type information on the display unit 7, are displayed in the information display area 74. The camera image (part of the first type information) displayed in the information display area 74 is switched to DPF information (second type information) as part of the vehicle body information (image from the camera 6). The case where the warning logo 70 (3rd type information) which shows the generation | occurrence | production and content of information is displayed is illustrated.

FIG. 7 is a diagram showing a basic screen when the second type information is switched to the first type information.
As shown in screen 3 in FIG. 7, when the second type information is low-priority DPF information, information is returned by performing a return operation (for example, pressing the basic screen return switch 12 c) with the operation device 12. The DPF information (second type information) displayed in the display area 74 is switched to the camera image (first type information). The warning logo 70 is displayed regardless of the degree of importance while the second type information is generated.

  Details of the display process will be described with reference to FIG.

  FIG. 8 is a flowchart showing details of display processing in the present embodiment. In FIG. 2, the control / determination unit 9 first reads an image of the first type information from the storage unit 10 (step S10) and displays it on the display unit 7 (screen 1: step S20). Subsequently, the display flag is turned off (step S30). Thereafter, it is determined whether or not the second type information is generated (step S40). If the determination result is NO, the display flag is turned off (step S50), and the first type information is displayed on the display unit 7. (Screen 1, 3: step S60), the process returns to step 40. If the determination result in step S40 is YES, it is determined whether the importance of the second type information is high or low (step S41), and an image of the second type information is read from the storage unit 10 (step S47). ) And displayed on the display unit 7 (screen 2: step S48). If the determination result in step S41 is NO, it is determined whether or not the display flag is ON (step S42). If the determination result is YES, the process proceeds to step S60, and if the determination result is NO, the second An image of the seed information is read from the storage unit 10 (step S43) and displayed on the display unit 7 (screen 2: step S44). Then, it is determined whether or not a return operation has been performed by the operation unit 12 (step S45). If the determination result is YES, a display flag indicating that the display has returned to the display of the first type information after the display of the second type information is performed. Turn on (step S46), proceed to step S60, do nothing if the determination result is NO, and return to step S40.

  Next, the operation of the display device according to the present embodiment configured as described above will be described.

1. When the second type information is not generated When the second type information is not generated, only the first type information is displayed as in the normal basic screen (screen 1) shown in FIG. An image 74a from the camera 6 is displayed as information on the state of the vehicle body in the state display areas 71 and 75, and information on the vehicle body in the information display area 74, together with the water temperature gauge 72 and the fuel remaining amount meter 73 (see FIG. 8). Steps S10 to S60). The operator performs the work while confirming the state outside the cab (rear) with the image 74a in the information display area 74 while confirming the water temperature, the fuel remaining amount, and the vehicle body information. Further, by operating the operation unit 12, a menu screen is displayed and various functions are executed.

2. When the low-priority type 2 information (DPF information) occurs When the low-importance DPF information (type 2 information) occurs, the generation and contents of the DPF information are simplified as shown in screen 2 of FIG. The camera logo 74a (first type information) displayed in the information display area 74 is switched to DPF information (second type information) (steps S43 and S44 in FIG. 8). The operator can check the water temperature, the fuel remaining amount, and the vehicle body information, but cannot check the state outside the cab (rear). When the return operation is not performed on the operation device 12, DPF information (second type information) is continuously displayed in the information display area 74 (steps S45 to S40 to S44 in FIG. 8). 12 (for example, when the basic screen return switch 12c is pressed), the DPF information (second type information) displayed in the information display area 74 is displayed as a camera image as shown in screen 3 in FIG. It switches to 74a (first type information) (steps S45 → S60 in FIG. 8). Thereby, the operator can perform work while confirming the state outside the cab (rear) with the image 74a in the information display area 74. The warning logo 70 is displayed regardless of the degree of importance while the second type information is generated. Further, when the operator operates the DPF switch 17 to perform the DPF regeneration process, the second type information is stopped, which is the same as the case where the second type information is not generated. ).

3. When highly-important type 2 information occurs When a highly-important DPF information (type 2 information) occurs, a warning logo that briefly indicates the generation and contents of DPF information as shown in screen 2 in FIG. 70 is displayed, and the camera image 74a (first type information) displayed in the information display area 74 is switched to DPF information (second type information) (steps S47 and S48 in FIG. 8). The operator can check the water temperature, the fuel remaining amount, and the vehicle body information, but cannot check the state outside the cab (rear). Further, unlike the case of the low importance level, the display of the DPF information (second type information) in the information display area 74 is continued even if a return operation is performed with the controller device 12. Here, when the operator operates the DPF switch 17 to perform the regeneration process of the DPF, the second type information is stopped and is the same as the case where the second type information is not generated. You will be able to work while confirming. Note that the case where the second type information changes from the low importance level to the high importance level is the same as the case where the high type second type information is generated. Further, as described above, the warning logo 70 is displayed regardless of the importance level while the second type information is generated.

  The effect of the present embodiment configured as described above will be described.

  In the prior art (described in Patent Document 1), when there is no change in the state of the work machine, a plurality of state display marks indicating the state of the work machine are displayed on the display screen, and the change in the state of the work machine occurs. In such a case, a specific status display mark displayed at a specific display location among the display locations on the display screen is not displayed, and the specific display location indicates a change in the state of the work machine. When information of a type that is not always displayed is displayed by displaying a change display mark, for example, when it is determined that an abnormality has occurred in a mechanism of a construction machine, information on the occurrence or type (abnormality) Information) was displayed on the display unit to notify the operator.

  However, as in the prior art, when the state of the work machine can be reported to the operator by displaying / hiding the state change display mark, the operator may not be aware of the state change display mark and there is a risk that the countermeasure will be delayed. Further, there is a problem in that it is difficult for the operator to tell the presence / absence of the importance of information indicated by the display mark only by displaying the state change display mark.

  On the other hand, in the present embodiment, the camera image that is at least a part of the first type information that is information of the vehicle body that is always displayed on the display unit, and other information that is displayed only when it is generated. The DPF information, which is the second type information, is switched and displayed, and when the importance of the second type information is low, it can be switched to the first type information, but not when the importance is high. The information display state is changed according to the importance of the second type information. In this way, the first type information that is always displayed and checked by the operator is switched to the second type information, and the display state of the information is changed according to the importance, so that the operator can more reliably generate information. It can be noticed, and it can be reported whether there is an urgency to deal with the condition indicated by the information.

  Further, since the display state is changed according to the difference in importance of the second type information, it is not necessary to newly store an image to be displayed on the display unit in the storage due to the difference in importance. The occurrence of information can be more reliably noticed while the increase in storage capacity is suppressed, and the presence or absence of urgency in dealing with the state indicated by the information can be reported.

  In the present embodiment, the display state is changed so that switching to the first type information is possible when the importance of the second type information is low, but switching is impossible when the importance is high. However, the present invention is not limited to this, and the display color may be changed as the display state of the second type information depending on the difference in importance. Even in this case, the same effect as the present embodiment can be obtained.

DESCRIPTION OF SYMBOLS 1 Lower traveling body 2 Upper revolving body 3 Work front 4 Driver's cab 5 Driver's seat 6 Camera 7 Display unit 8 Display unit 9 Control / determination unit 10 Storage unit 11 Sensor 12 Operation unit 12a Operation switch 12b Return switch 12c Basic screen return switch 13 Key input device 14 Communication unit 15 Information storage device 16 Engine control device 17 DPF switch 18 DPF sensor 19 Hydraulic control device 20 Body network 70 Warning logo 71, 75 Status display area 72 Water temperature gauge 73 Fuel fuel gauge 74 Information display area

Claims (4)

It provided the cab of a construction machine, a display device for a construction machine comprising a first type information capable of displaying display unit which is information of the car body, and an operation section for operating the display unit ,
And part of the previous SL first type information, to display switching between second type information is a body of information to be displayed only at the occurrence be other information, and, according to the importance of the second type information Changing the display state of the second type information displayed on the display unit,
When the importance of the second type information is lower than a predetermined standard, the operation unit can be switched to the first type information by operation, and when the importance is higher than the predetermined standard, the operation unit A display device for a construction machine, which cannot be switched to the first type information by the operation. The display device for a construction machine according to claim 1,
A display device for a construction machine, wherein the display color of the second type information is different depending on whether the importance of the second type information is higher or lower than a predetermined reference. The display device for a construction machine according to claim 1,
The display unit can display third type information related to the second type information,
The third type information is displayed according to the display of the second type information, and the third type information is displayed even when the display of the display unit is switched from the second type information to the first type information. A display device for a construction machine characterized by being continued. The display device for a construction machine according to claim 1,
The first type information includes at least a camera image obtained from a camera installed to supplementarily obtain a visual field outside the cab, and the camera image and the second type information are switched and displayed. Display device for construction machinery.

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