Area setting system

Abstract

This area setting system comprises a display unit and a setting unit. The display unit has a screen that displays an image corresponding to an input display signal, and is capable of receiving an input of a command signal through an operation on the screen. The setting unit: inputs the display signal to the display unit so as to display, on the screen, a machine image and a setting image for setting a boundary that defines a restricted area of the work machine, the machine image being at least one of an image of a work machine viewed along a horizontal direction and an image of the work machine viewed along a vertical direction; sets the boundary in response to the command signal input to the display unit through an operation on the setting image on the screen; and inputs the display signal to the display unit so that the set boundary is displayed on the screen in correspondence to the machine image.

Description

Area setting system

[0001] The present disclosure relates to an area setting system.

[0002] Patent Document 1 discloses a system that detects the approach of an object or the like to a control target surface of area restriction in a working machine and decelerates or stops the operation of a working device such as turning. However, in Patent Document 1, an operation related to setting area restriction cannot be easily performed.

[0003] International Publication No. 2022 - 202674

[0004] An object of the present disclosure is to provide an area setting system capable of easily performing an operation related to setting area restriction.

[0005] The area setting system according to one aspect of the present disclosure includes a display unit and a setting unit. The display unit has a screen that displays an image according to an input display signal and can receive an input of a command signal through an operation on the screen. The setting unit inputs the display signal to the display unit so as to display on the screen at least one machine image of an image of the working machine viewed along the horizontal direction and an image of the working machine viewed along the vertical direction, and a setting image for setting a boundary that defines a restricted area in the working machine, receives the command signal input to the display unit through an operation on the setting image on the screen, sets the boundary, and inputs the display signal to the display unit so that the set boundary is displayed on the screen corresponding to the machine image. According to the present disclosure, an operation related to setting area restriction can be easily performed.

[0006] Figure 1 is a diagram showing an example configuration of a region setting system according to the first embodiment of the present invention. Figure 2 is a diagram illustrating the first screen in the region setting system. Figure 3 is a diagram showing the first screen before operation when turning on region restriction for the position of the attachment. Figure 4 is a diagram showing the first screen after turning on region restriction for the position of the attachment. Figure 5 is a diagram showing an example of setting a restricted area for the position of the attachment based on numerical input operation. Figure 6 is a diagram showing an example of setting a restricted area for the position of the attachment based on the posture of the work machine. Figure 7 is a diagram showing the first screen before operation when turning on region restriction for the rotation angle of the swivel section. Figure 8 is a diagram showing the first screen after turning on region restriction for the rotation angle of the swivel section. Figure 9 is a diagram showing an example of setting a restricted area for the rotation angle of the swivel section. Figure 10 is a flowchart showing the operation of the setting unit and the first display unit. Figure 11 is a diagram illustrating the first screen when region restriction for the rotation angle of the swivel section is activated. Figure 12 is a diagram illustrating the second screen in the second embodiment of the present invention. Figure 13 is a flowchart illustrating the process when displaying the second screen. Figure 14 is a flowchart illustrating the process of executing a warning display for the ambient detection alarm system in the third embodiment of the present invention. Figure 15 is a flowchart illustrating the process in the first display unit related to setting the display color of the display element in the fourth embodiment of the present invention. Figure 16A is a diagram illustrating the relationship between the posture of the work machine and the display color of the display element. Figure 16B is a diagram illustrating the relationship between the posture of the work machine and the display color of the display element. Figure 16C is a diagram illustrating the relationship between the posture of the work machine and the display color of the display element. Figure 16D is a diagram illustrating the relationship between the posture of the work machine and the display color of the display element. Figure 16E is a diagram illustrating the relationship between the posture of the work machine and the display color of the display element. Figure 17A is a diagram illustrating the relationship between the posture of the work machine and the display color of the display element when the display color of the display element is changed in multiple stages. Figure 17B is a diagram illustrating the relationship between the posture of the work machine and the display color of the display element when the display color of the display element is changed in multiple stages. Figure 17C illustrates the relationship between the posture of the work machine and the display color of the display element when the display color of the display element is changed in multiple stages.Figure 17D is a diagram illustrating the relationship between the posture of the work machine and the display color of the display element when the display color of the display element is changed in multiple stages. Figure 17E is a diagram illustrating the relationship between the posture of the work machine and the display color of the display element when the display color of the display element is changed in multiple stages. Figure 17F is a diagram illustrating the relationship between the posture of the work machine and the display color of the display element when the display color of the display element is changed in multiple stages. Figure 17G is a diagram illustrating the relationship between the posture of the work machine and the display color of the display element when the display color of the display element is changed in multiple stages. Figure 18 is a flowchart showing the processing of the notification unit when switching the presence or absence of a notification sound according to the operation status of the work machine. Figure 19 is a flowchart showing the processing in the first display unit related to setting the display color of the display element in the fifth embodiment of the present invention. Figure 20 is a flowchart showing the processing in the notification unit in the sixth embodiment of the present invention. Figure 21 is a diagram showing another display example on the first screen in the tenth embodiment of the present invention. Figure 22 is a diagram showing the lighting pattern in the display example shown in Figure 21. Figure 23 is a diagram showing the lighting pattern in the display example shown in Figure 21. Figure 24 shows the lighting pattern in the display example shown in Figure 21.

[0007] The embodiments of this disclosure will be described below with reference to the attached drawings.

[0008] <First Embodiment> Figure 1 is a diagram showing an example of the configuration of a region setting system according to one embodiment of the present disclosure.

[0009] As shown in Figure 1, the area setting system 10 of this embodiment includes a first display unit 11A having a first screen capable of displaying an image (machine image) of the display range, including the work machine, viewed along the horizontal or vertical direction. Figure 1 also shows a second display unit 11B, which can display a captured image of the display range captured by a camera together with the machine image, as will be described in other embodiments later, and a third display unit 11C, which can display a warning display of the surrounding detection alarm system superimposed on the machine image, or displayed in a state that is visible simultaneously with the machine image. These display units have a screen that displays an image corresponding to an input display signal, and can receive command signals through operation of the screen. For example, these display units consist of a touch panel type display.

[0010] Furthermore, the area setting system 10 of this embodiment includes a reception unit 12 (setting unit) that accepts the setting of a boundary defining a restricted area in the work machine via operation on the first screen described above, a posture acquisition unit 13 that acquires posture information, which is information relating to the posture of the work machine, a control unit 14 that restricts the movement of the work machine, and a storage unit 15 that stores the information received via the reception unit 12 and other information necessary for the operation of the area setting system 10. The restricted area is an area set around the work machine, and is effective, for example, when obstacles are placed. In this case, a restricted area is set to prevent a part of the work machine from coming into contact with the obstacle during operation, and the entry of the work machine into the restricted area is prevented.

[0011] In this disclosure, the term "working machinery" broadly includes construction machinery and heavy machinery, and also includes tower cranes. Later, a hydraulic excavator is shown as an example of working machinery. The area setting system 10 may be mounted on the working machinery or on a remote control device that remotely operates the working machinery. Alternatively, the area setting system 10 may be partially separated and arranged on the working machinery and the remote control device.

[0012] The reception unit 12 inputs the display signal to the first display unit 11A so as to display on the first screen at least one of the machine images—an image of the work machine viewed horizontally and an image of the work machine viewed vertically—and a setting image for setting a boundary that defines the restricted area of ​​the work machine. The reception unit 12 also sets the boundary after receiving the command signal input to the first display unit 11A through operations on the setting image on the first screen. Furthermore, the reception unit 12 inputs the display signal to the first display unit 11A so as to display the set boundary on the first screen corresponding to the machine image. These processes will be described in detail later.

[0013] As shown in Figure 1, the posture acquisition unit 13 can acquire information regarding the posture of the work machine from the control unit 14 or the control device 50 of the work machine. The control unit 14 also restricts the movement of the work machine via the control device 50.

[0014] For example, if the work machine is a hydraulic excavator, the posture acquisition unit 13 includes three stroke sensors attached to the boom cylinder, arm cylinder, and bucket cylinder of the work machine, respectively, to detect the stroke (extension amount, length) of each cylinder. The stroke of each cylinder detected by each stroke sensor is used to calculate the position and posture of the boom, arm, and bucket. Alternatively, angle sensors (boom angle sensor, arm angle sensor, bucket angle sensor) that detect the rotation angles of the boom, arm, and bucket, respectively, may be used instead of stroke sensors to calculate the position and posture of the boom, arm, and bucket. Information such as the position (coordinates) of the tip of the bucket is acquired according to the above calculation results. Similarly, an angle sensor is also provided on the rotation axis of the upper rotating body to detect the rotation angle of the upper rotating body relative to the lower traveling body of the work machine. The posture acquisition unit 13 may also include an IMU (Internal Measurement Unit) to acquire the posture of the work machine relative to the ground. The specifications information such as the length of each component of the work machine necessary for the calculation is stored in the storage unit 15.

[0015] On the other hand, the work machine is equipped with a drive unit. The drive unit drives various structures of the work machine, including the lower traveling body, upper slewing body, and work attachments (boom, arm, bucket), which are operated by control levers located on the cab or other parts of the work machine. In particular, the drive unit can rotate and brake the upper slewing body in response to input command signals (drive command signals). The drive unit can also move the work attachments in response to input command signals. The drive unit includes hydraulic circuits such as hydraulic pumps and hydraulic motors. The above command signals also include input signals to proportional valves included in the hydraulic circuits.

[0016] The control device 50 of the work machine inputs the command signal to the drive unit. Normally, this command signal is set according to the amount of input to the operating lever operated by the operator. The control unit 14 inputs a forced command signal to the drive unit via the control device 50 when there is a possibility that a part of the work machine may enter a restricted area, thereby restricting the driving of various structures of the work machine (such as deceleration or stopping).

[0017] Next, the operation of the area setting system 10 of this embodiment will be described.

[0018] First, the operation of the reception unit 12, the storage unit 15, and the first display unit 11A will be explained.

[0019] In this embodiment, multiple restricted areas are provided for the work machine, and the reception unit 12 accepts the setting of individual boundaries defining the corresponding restricted areas through the operator's operation of operation buttons (also called setting images or operation buttons; such as operation button 101A) on a first screen provided for each of the multiple restricted areas. In this embodiment, the reception unit 12 accepts the setting and release of boundaries through the operation of the operation buttons (such as operation button 101A) displayed on the first screen, and also presents the current state corresponding to either the setting or release of the boundary by the display format of the operation button (such as operation button 101A). When the reception unit 12 accepts the above setting, it actually sets the boundaries of the restricted areas for the work machine. The set information is stored in the storage unit 15. The first display unit 11A also displays the operating status of the control unit 14 and the current status of the work machine (the posture of the work machine) on the first screen (area 100, area 200). Note that either the operating status of the control unit 14 or the current status of the work machine may be displayed.

[0020] Figure 2 illustrates the first screen. The first screen displays an image showing the boundary, along with an image showing the current position of the work machine (machine image).

[0021] As described above, the first screen is displayed on the first display unit 11A and presented, for example, to an operator operating a work machine.

[0022] In the example shown in Figure 2, a graphic image of the work machine viewed horizontally is displayed in region 100, and a graphic image of the work machine viewed vertically from above is displayed in region 200. The first display unit 11A can reflect the posture of the work machine (e.g., arm angle, rotation angle of the swivel part, etc.) in real time in the graphic images displayed in regions 100 and 200 based on information obtained from the posture acquisition unit 13. For the above image display and each of the image displays described later, the reception unit 12 inputs a display command signal corresponding to the image to be displayed by each display unit.

[0023] Above area 100, a display bar 101 is provided to indicate whether the upper area restriction relative to the attachment position is on or off, and below area 100, a display bar 102 is provided to indicate whether the lower area restriction relative to the attachment position is on or off.

[0024] Furthermore, an operation button 101A for switching the upper area restriction relative to the attachment position on / off is provided near the display bar 101, and an operation button 102A for switching the lower area restriction relative to the attachment position on / off is provided near the display bar 102.

[0025] As shown in Figure 2, above region 200 is a display bar 201 that indicates whether the forward region restriction relative to the attachment position is on or off, and below region 200 is a display bar 202 that indicates whether the rear region restriction relative to the attachment position is on or off. To the left of region 200 is a display bar 203 that indicates whether the left region restriction relative to the attachment position is on or off, and to the right of region 200 is a display bar 204 that indicates whether the right region restriction relative to the attachment position is on or off.

[0026] Furthermore, an operation button 201A for switching the forward area restriction relative to the attachment's position on or off is provided near the display bar 201, and an operation button 202A for switching the rear area restriction relative to the attachment's position on or off is provided near the display bar 202. An operation button 203A for switching the left area restriction relative to the attachment's position on or off is provided near the display bar 203, and an operation button 204A for switching the right area restriction relative to the attachment's position on or off is provided near the display bar 204.

[0027] A ring-shaped display bar 205 is provided around the region 200 to indicate whether the region restriction on the rotation angle of the rotating part is on or off.

[0028] Furthermore, at the top of the first screen, there are operation buttons 205A and 205B for switching the area restriction on / off for the rotation angle of the swivel section. In Figure 2, operation buttons 205A and 205B are located on the left and right outer sides of the display bar 201. This allows the operator to safely distinguish between operation buttons 201A, 202A, 203A, and 204A, which define boundaries on the front, back, left, and right sides of the work machine, and operation buttons 205A and 205B.

[0029] Furthermore, at the bottom of the first screen, there are operation buttons 300 for performing various operations and resetting settings. In Figure 2, the operation buttons 300 are located midway between area 100 and area 200 in the left-right direction. Therefore, the operator can easily identify the operation buttons 300, and it is possible to prevent them from unintentionally performing an operation that resets previously set processes.

[0030] The display bar and operation buttons described above constitute part of the boundary and setting images in this disclosure.

[0031] Figure 3 shows the first screen before turning on area restriction for the attachment position, and Figure 4 shows the first screen after turning on area restriction for the attachment position.

[0032] In the example shown in Figure 3, a numerical value indicating the position of the upper restriction area is displayed in area 101B to the right of the operation button 101A, and the display format (text and lighting color) of the operation button 101A indicates that the area restriction setting is being accepted.

[0033] From this state, when an operator or other person operates the operation button 101A, the upper area restriction is turned on, and the first screen switches to the state shown in Figure 4. That is, when the area restriction is turned on, the display mode of the operation button 101A changes to a display mode (text and lighting color) that indicates that the release of the restricted area setting is accepted. Also, the lighting color of the display bar 101 changes to a color that indicates that the upper area restriction is turned on. In this state, when an operator or other person operates the operation button 101A, the upper area restriction is turned off, and the first screen returns to the state shown in Figure 3. When each button is operated, a command signal corresponding to that operation is input to the reception unit 12, and the content of the operation is recognized.

[0034] This section describes the operation related to the upper area restriction corresponding to display bar 101, but the operation related to the lower area restriction corresponding to display bar 102 is similar. The same applies to the operation related to the front area restriction corresponding to display bar 201, the rear area restriction corresponding to display bar 202, the left area restriction corresponding to display bar 203, and the right area restriction corresponding to display bar 204.

[0035] Next, we will explain how to set the restriction area for the attachment's position.

[0036] Figure 5 shows an example of setting a limiting area for the attachment position based on numerical input operations, and Figure 6 shows an example of setting a limiting area for the attachment position based on the posture of the work machine.

[0037] As shown in Figure 5, in this embodiment, the restricted area can be set by performing a numerical input operation using the window 110 (setting image) displayed on the first screen. For example, when a numerical value is entered using the window 110, that value is displayed in the area 101B near the operation button 101A. When the window 110 is closed (for example, when the "back" button in the window 110 is pressed), the state shown in Figure 3 is returned. In this case, with respect to the upper area restriction, a restricted area can be set with a horizontal plane at a height of 3m from the reference height (for example, the height of the ground) as the boundary. When a numerical value is entered, a command signal corresponding to that operation is input to the reception unit 12, and the content of the operation is recognized. In this way, the reception unit 12 can change the position of the boundary in response to the operation on the window 110 (setting image) on the screen.

[0038] The same applies to setting the restriction areas not only above, but also below, in front, behind, to the left, and to the right. For example, when the restriction area below is set by numerical input, the value is displayed near operation button 102A, and when the restriction area in front is set by numerical input, the value is displayed near operation button 201A. When the restriction areas behind, to the left, and to the right are set by numerical input, the values ​​are displayed near operation button 202A, operation button 203A, and operation button 204A, respectively. Subsequently, the restriction area is set by operating the corresponding operation buttons 102A, 201A, 202A, 203A, and 204A. When each button is operated, a command signal corresponding to that operation is input to the reception unit 12, and the content of the operation is recognized.

[0039] This method of setting area restrictions allows the position of the boundary surface of the restricted area to be set numerically.

[0040] Furthermore, the reception unit 12 can set the boundary of the restricted area based on the position of the attachment, which is calculated based on the information regarding the posture of the work machine acquired by the posture acquisition unit 13.

[0041] For example, as shown in FIG. 6, based on the position of the attachment 60, a restricted area for the position of the attachment 60 can be set. In this case, for example, a surface 61 passing through the position of the tip 60a of the attachment 60 can be set as the surface corresponding to the boundary of the restricted area. Specifically, the reception unit 12 sets the above boundary based on the position of the tip 60a of the attachment 60 corresponding to the posture of the work machine acquired by the posture acquisition unit 13. In FIG. 6, the case of setting a forward restricted area is illustrated, but the same applies to the cases of setting restricted areas above, below, behind, to the left, and to the right.

[0042] In this way, when setting a restricted area for the position of the attachment 60 based on the actual position of the attachment 60, the boundary can be set at a position according to the actual on-site situation. When there are obstacles or the like around the work machine in the operator's visual field, the operator can place the tip 60a of the attachment 60 at a position in front of them and perform the restricted area setting operation in this state. Therefore, operation mistakes by the operator or the like can be reduced, and the accuracy of the work can be improved. I

[0043] FIG. 7 is a diagram showing a first screen before an operation when turning on the area restriction for the turning angle of the turning unit, and FIG. 8 is a diagram showing a first screen after turning on the area restriction for the turning angle of the turning unit. In FIGS. 7 and 8, the lighting color of the display bar 204 is a color indicating that the area restriction is on. That is, FIGS. 7 and 8 show a state where the right area restriction for the position of the attachment is on.

[0044] In the example shown in FIG. 7, the display form (characters and lighting color) of the operation button 205A indicates that the setting of the area restriction is accepted.

[0045] From this state, when an operator or the like operates the operation button 205A, the area restriction for the turning angle of the turning unit is turned on, and the first screen switches to the state shown in FIG. 8. That is, when the area restriction is turned on, the display form of the operation button 205A shifts to a display form (characters and lighting color) indicating that it accepts the cancellation of the setting of the restricted area. Also, the lighting color of the display bar 205 switches to a color indicating that the area restriction for the turning angle of the turning unit is turned on. In this state, when an operator or the like operates the operation button 205A, the area restriction for the turning angle of the turning unit is turned off, and the first screen returns to the state shown in FIG. 7.

[0046] Also, in the present embodiment, two restricted areas can be set for the turning angle of the turning unit. That is, instead of operating the operation button 205A, the second restricted area can be set by an operation using the operation button 205B. For example, the operation buttons can be used properly so that the operation button 205A is operated when a boundary is provided on the left side (counterclockwise side) of the current working machine (working attachment), and the operation button 205B is operated when a boundary is provided on the right side (clockwise side).

[0047] Next, a method for setting a restricted area for the turning angle of the turning unit will be described.

[0048] FIG. 9 is a diagram showing an example of setting a restricted area for the turning angle of the turning unit.

[0049] The reception unit 12 can set the boundary of the restricted area (the rotation angle of the rotation section) based on the rotation angle of the rotation section acquired by the posture acquisition unit 13. In the example in Figure 9, the restricted area can be set by actually rotating the rotation section of the work machine. In this case, for example, the reception unit 12 can acquire the rotation angle when the rotation section of the work machine is rotated to the rotation angle that becomes the boundary of the restricted area from the posture acquisition unit 13 and reflect it in the position of the marker 205M. Therefore, by setting the pair of markers 205M to match the rotation angle of the rotation section to the boundary of the restricted area, the operator can place a pair of markers 205M (setting images) that define the range of the restricted area on the display bar 205. The reception unit 12 can also reset the orientation of the work machine in the graphic display in area 200 to match the current rotation angle of the rotation section acquired by the posture acquisition unit 13. For example, the graphic display can be reset so that the current rotation angle of the rotation section corresponds to the initial state of the graphic display (the state in Figure 2). This allows operators to freely set the direction of the graphic display and easily recognize the rotation angle of the rotating part.

[0050] Thus, when setting a limiting range for the slewing angle of the slewing part based on the actual slewing angle of the work machine, the boundary can be set at a slewing angle that is appropriate to the actual site conditions. Specifically, let's assume that the upper slewing part rotates 30 degrees clockwise from a state where the direction of the lower traveling body and the upper slewing body of the work machine are aligned, that is, when the slewing angle of the upper slewing body is zero. In this case, the work machine on the machine image will appear tilted to the right from the operator's perspective. This state can feel unnatural to operators positioned on the upper slewing body or operating remote control devices. Therefore, by resetting the graphic display, the posture of the upper slewing body is displayed on the screen in the same way as when the slewing angle is zero. As a result, the operator's discomfort is eliminated, reducing operational errors and improving the accuracy of the work.

[0051] Furthermore, the restricted area may be set without actually rotating the rotating part of the work machine, for example, by having the operator move the marker 205M on the display bar 205 and position it in a predetermined location. Alternatively, the restricted area may be set by inputting a numerical value (for example, an angle) using the window 110 (Figure 5) displayed on the first screen, similar to when setting the restricted area for the position of the attachment.

[0052] As described above, according to this embodiment, multiple restriction areas can be set on a common screen (the first screen), thus increasing operational efficiency and reducing the working time of operators. Furthermore, since the setting operations can be performed through a convenient and intuitive interface on the first screen, operational errors by operators can be reduced and the accuracy of the work can be improved.

[0053] Figure 10 is a flowchart illustrating the operation of the reception unit and the first display unit. This flowchart corresponds to the processing of the reception unit 12, storage unit 15, and first display unit 11A as described using Figures 2 to 10. Information received via the reception unit 12 and other necessary information are stored in the storage unit 15 as appropriate, and the information stored in the storage unit 15 is used as appropriate for processing the first display unit 11A.

[0054] In step S102 of Figure 10, the reception unit 12 determines whether or not a setting of a restricted area is requested. If the determination is affirmative, the process proceeds to step S104; if the determination is negative, the process proceeds to step S116. For example, an operator can request the setting of a restricted area from the area setting system 10 by pressing a predetermined input button.

[0055] In step S104, the first display unit 11A displays a selection screen (for example, the screen shown in Figure 2).

[0056] In step S106, the reception unit 12 determines whether or not a target for setting the restriction area has been selected. If the determination is affirmative, the process proceeds to step S108; otherwise, the process proceeds to step S102. Here, the targets for setting the restriction area are the restriction area with respect to the position of the attachment and the restriction area with respect to the rotation angle of the swivel unit.

[0057] In step S108, the first display unit 11A displays a settings screen (for example, the screen shown in Figure 5).

[0058] In step S110, the reception unit 12 determines whether a limiting area has been set. If the determination is affirmative, the process proceeds to step S112; otherwise, the process proceeds to step S108. Here, the determination is affirmative if a limiting area has been set for the position of the attachment or for the rotation angle of the swivel unit.

[0059] In step S112, the first display unit 11A displays a standby screen (for example, the screen shown in Figure 3 or Figure 7).

[0060] In step S114, the reception unit 12 determines whether or not area restriction has been initiated. If the determination is affirmative, the process proceeds to step S116; otherwise, the process proceeds to step S102. Here, the determination is affirmative if an operation is made on operation button 101A, 102A, 201A, 202A, 203A, 204A, 205A, or 205B, which are lit to indicate acceptance of area restriction settings.

[0061] In step S116, the first display unit 11A displays a screen indicating the status of the area restriction (for example, the screen shown in Figure 4 or Figure 8).

[0062] In step S120, it is determined whether the area restriction has been released. If the determination is affirmative, the process proceeds to step S112; otherwise, the process proceeds to step S102. Here, the determination is affirmative if an operation is made on operation button 101A, 102A, 201A, 202A, 203A, 204A, 205A, or 205B, which are lit to indicate that the release of the area restriction setting has been accepted.

[0063] Next, the operation related to area restriction by the control unit 14 will be explained.

[0064] The control unit 14 restricts the movement of the work machine in accordance with the current status of the work machine associated with the restricted area (including the current posture of the work machine and the changes in that posture), which is obtained based on the posture information of the work machine obtained by the posture acquisition unit 13 and the boundary set via the reception unit 12.

[0065] As described above, in this embodiment, the restricted areas set via the reception unit 12 include restricted areas above, below, in front of, behind, to the left of, and to the right of the attachment's position, and each restricted area is defined by the boundary (plane) set via the reception unit 12. In addition, there is a restricted area set via the reception unit 12 that is limited by the rotation angle of the swivel unit, and this restricted area is defined by the boundary (rotation angle) set via the reception unit 12. The control unit 14 acquires the restricted areas and other information from the storage unit 15 and reflects it in the operation related to area restriction.

[0066] Once a restricted area is set and the area restriction is turned on, the control unit 14 executes operations related to the area restriction.

[0067] When the area restriction is turned on, the control unit 14 controls the movement of the work machine via the control device 50 so that, for example, the position of the attachment or the rotation angle of the swivel part does not exceed the boundary and enter the restricted area. Alternatively, the control unit 14 controls the movement of the work machine via the control device 50 so that, for example, if the position of the attachment or the rotation angle of the swivel part exceeds the boundary and enters the restricted area, it suppresses or reduces the speed of the attachment. Furthermore, if the position of the attachment or the rotation angle of the swivel part approaches the boundary based on the posture of the work machine acquired by the posture acquisition unit 13, the first display unit 11A may notify the approach to the area restriction using the corresponding display bars 101, 102, 201, 202, 203, 204, and 205. For example, in such a case, the corresponding display bars 101, 102, 201, 202, 203, 204, and 205 may be illuminated in a specific color (for example, red). This makes it easier for operators and others to recognize the current status of the work machine, as well as whether the area restriction function is working effectively.

[0068] Figure 11 illustrates the first screen when the area limiting for the rotation angle of the rotating part is activated.

[0069] In the example shown in Figure 11, when the slewing angle of the slewing section approaches the boundary in a counterclockwise direction and limiting actions such as reducing the slewing speed are initiated, the distance (angle) between the current slewing angle of the slewing section and the boundary is displayed as an arc 205P on a concentric circle with the display bar 205. In this case, the display of the arc 205P makes it easier for operators to recognize that the area limiting function is working effectively, along with the restricted area and the current status of the work machine.

[0070] Thus, in this embodiment, safety can be ensured because the movement of the work machine is restricted by the operation of the area restriction. In addition, the operator can easily recognize the operation of the area restriction.

[0071] <Second Embodiment> Next, as a second embodiment of the present disclosure, a second screen displayed by the second display unit 11B will be described. Note that explanations of points that overlap with the first embodiment will be omitted. The same applies to subsequent embodiments.

[0072] In this embodiment, the area setting system 10 further includes an imaging device 51 (camera) (Figure 1). The imaging device 51 captures an image of the surroundings of the work machine and inputs the image to the reception unit 12.

[0073] The second display unit 11B has a second screen that displays an image (superimposed image) in which a surrounding image (captured image) taken by a camera is superimposed on an image similar to the image displayed on the first screen of the first embodiment described above, and the reception unit 12 accepts the setting of a boundary (a boundary that defines the setting area for the rotation angle of the rotation unit) via the operator's operation on the superimposed image.

[0074] Figure 12 illustrates a second screen that displays an image in which a captured image is superimposed on an image similar to the image (such as a machine image) displayed on the first screen of the first embodiment described above.

[0075] In the example shown in Figure 12, the captured image is superimposed on a roughly circular area 250 that includes the area 200 in the first screen. The image displayed in area 250 is a screen that displays in real time a surrounding image (captured image) captured by a camera from above, including the work machine and the display range. Although Figure 12 omits the detailed illustration of the captured image, the surrounding image of the work machine in the captured image is placed around the work machine in the machine image. The camera can be mounted, for example, on top of the work machine, or on a structure such as a tower or building that can capture images from above the work machine. Alternatively, an image captured by a drone flying above the work machine may be superimposed.

[0076] Alternatively, a second screen may be displayed, superimposed on the same image as the first screen, showing a surrounding image captured by a camera from the side of the work machine, including the work machine itself.

[0077] Furthermore, the captured image may be displayed in a position different from the image exemplified on the first screen (machine image, setting image). For example, the captured image may be displayed above or below, or to the left or right of, the image exemplified on the first screen.

[0078] Figure 13 is a flowchart showing the process for displaying a captured image superimposed on an image similar to the image on the first screen. In this process, if an image similar to the image on the first screen is not needed, the image on the first screen is not displayed, and only the captured image is displayed.

[0079] In step S202 of Figure 13, the second display unit 11B displays an image similar to the first screen superimposed on the second screen.

[0080] In step S204, the reception unit 12 refers to the storage unit 15 and determines whether the area restriction is turned on. If the determination is affirmative, the process proceeds to step S202; if the determination is negative, the process proceeds to step S206. Here, the determination is affirmative if either the area restriction for the attachment position or the area restriction for the rotation angle of the swivel unit is turned on, and the determination is negative if neither area restriction is turned on.

[0081] In step S206, the reception unit 12 refers to the storage unit 15 and determines whether or not the setting of a restricted area is requested via the second display unit 11B. If the determination is affirmative, the process proceeds to step S202; if the determination is negative, the process proceeds to step S208.

[0082] In step S208, the reception unit 12 stops displaying an image similar to the first screen via the second display unit 11B and proceeds to step S202.

[0083] As shown in Figure 13, when setting the limiting area, the surrounding image (captured image) captured by the camera is superimposed on the machine image and the setting image, allowing the operator to set the limiting area (boundary related to the rotation angle) while referring to the surrounding image. Specifically, the captured image of the right side of the actual work machine is displayed to the right of the machine image, which is an image of the work machine, and the captured image of the left side of the actual work machine is displayed to the left of the machine image. Therefore, the operator can set the limiting area while confirming the presence of obstacles and other objects around the actual work machine using the captured image.

[0084] Furthermore, unless area restriction is enabled or setting of a restricted area is requested via the second display unit 11B, the display of the machine image and setting image is stopped (step S208), and only the surrounding image is displayed on the second screen. Therefore, when area restriction is not enabled or no setting operation is performed, the same image as on the first screen is not displayed when it is not needed. As a result, operators can more easily see the surrounding image, which can improve accuracy and safety in manual operation, for example.

[0085] <Third Embodiment> Next, a third embodiment of the present disclosure will be described. Figure 14 is a flowchart showing the process for executing a warning display of the surrounding detection alarm system. The surrounding detection alarm system is a system that detects the surrounding conditions using various sensors to ensure the safety of the area around the work machine and issues an alarm when necessary. In this case, the area setting system 10 is capable of sending and receiving information and signals with the surrounding detection alarm system. As described above, the third display unit 11C has a third screen that displays the warning display of the surrounding detection alarm system superimposed on an image similar to the image of the first screen (machine image, setting image) in the first embodiment, or displays it in a state that is visible at the same time as the image of the first screen.

[0086] In step S302 of Figure 14, the reception unit 12 determines whether or not a warning from the surrounding detection alarm system has been issued. If the determination is positive, the process proceeds to step S304; if the determination is negative, the process proceeds to step S306.

[0087] In step S304, the reception unit 12 inputs a display signal to the third display unit 11C to execute an alarm display indicating the activation of an alarm, either superimposed on the machine image and setting image, or displayed alongside the machine image and setting image in a manner that the operator can see simultaneously with the machine image and setting image, for example, and proceeds to step S302.

[0088] In step S306, the reception unit 12 stops the execution of the alarm display and proceeds to step S302.

[0089] In this embodiment, an alarm display is performed along with the machine image and setting image to indicate the issuance of an alarm. For example, it is possible to easily determine whether there is an object that triggers an alarm (such as a person) near the rotation angle of the rotation section which constitutes a restricted area, thereby improving safety.

[0090] As described above, according to this embodiment, operations related to setting area restrictions can be easily performed by using the images displayed on each display unit. In addition, when setting the restricted area, only the on / off status of the function may be set without changing the position of the boundary.

[0091] <Fourth Embodiment> Next, a fourth embodiment of the present disclosure will be described. In the fourth embodiment, the display color of the display elements on the first screen is changed according to the degree to which the work machine approaches the restricted area. Because the display color of the display elements switches according to the degree to which the work machine approaches the restricted area, the operator can easily grasp, for example, the positional relationship between an obstacle and the work machine. In addition, the operator can easily confirm that the area setting system is functioning correctly. In the fourth embodiment, when the work machine approaches the restricted area, the display color of the display elements can be switched from a normal color (an example of a first display color) to a specific color (an example of a second display color) to alert the operator.

[0092] Next, the operation in the fourth embodiment will be described.

[0093] The posture acquisition unit 13 calculates the degree of approach of the work machine to the restricted area in real time, based on the posture of the work machine acquired from the control device 50 (e.g., the position and posture of the boom, arm, and bucket, and the slewing angle) and the restricted area set via the reception unit 12. Any parameter can be used as the degree of approach. For example, if the restricted area is set as the up / down, left / right, or front / back area of ​​the work machine, the degree of approach may be the distance from the current position of the work machine (e.g., the position of the bucket) to the position where it reaches the restricted area. Alternatively, if the restricted area is set as a range of angles of the work machine (e.g., the slewing angle of the arm), the degree of approach may be the angle difference from the current angle of the work machine to the angle of the work machine when it reaches the restricted area (e.g., the difference in the slewing angle of the arm).

[0094] The first display unit 11A sets (changes) the display color of the display elements on the first screen according to the degree of approach calculated by the attitude acquisition unit 13. The first display unit 11A may select the display color of the display elements based only on the current value of the degree of approach, but in the fourth embodiment, the display color of the display elements is set taking into account the change in the degree of approach over time. In the above and following descriptions, the processing performed by the first display unit 11A may also be performed by the reception unit 12, as in the previous embodiment. In this case, the first display unit 11A only needs to display an image corresponding to the input signal. The same applies to the other display units.

[0095] Specific examples of display elements on the first screen will be discussed later.

[0096] Figure 15 is a flowchart showing the processing in the first display unit 11A related to setting the display color of the display element in the fourth embodiment, and Figures 16A to 16E are diagrams illustrating the relationship between the posture of the work machine and the display color of the display element.

[0097] The processing in the first display unit 11A will be explained below with reference to Figure 15.

[0098] In step S402 of Figure 15, the first display unit 11A sets the display color of the display elements on the first screen to a normal color (e.g., white, black, etc.). A normal color is, for example, a color that indicates that the work machine is not approaching the restricted area, and that there is no risk of the work machine coming into contact with an obstacle. On the other hand, a specific color (e.g., red, yellow, orange, etc.) is a color that indicates that the work machine is approaching the restricted area.

[0099] In step S404, the first display unit 11A acquires the degree of approach of the work machine to the restricted area calculated by the posture acquisition unit 13. This degree of approach reflects the current posture of the work machine.

[0100] In step S406, the first display unit 11A determines whether the display color of the display element on the currently set first screen is a normal color. If the determination is affirmative, the process proceeds to step S408; otherwise, the process proceeds to step S412. The determination is denied when the display color of the display element on the currently set first screen is a specific color.

[0101] In step S408, the first display unit 11A determines whether the degree of approach acquired in step S404 is greater than the first threshold. If the determination is affirmative, the process proceeds to step S410; otherwise, the process proceeds to step S404.

[0102] In step S410, the first display unit 11A sets (changes) the display color of the display elements on the first screen to a specific color and proceeds to step S404. Meanwhile, in step S412, the first display unit 11A determines whether the degree of approach acquired in step S404 is smaller than the second threshold. If the determination is affirmative, the process proceeds to step S414; otherwise, the process proceeds to step S404. Here, the first threshold corresponds to a state in which the work machine is closer to the restricted area compared to the second threshold.

[0103] In step S414, the first display unit 11A sets (changes) the display color of the display elements on the first screen to the normal color, and proceeds to step S404. Figures 16A to 16E show the posture of the work machine as viewed from the side of the arm. Here, an example is given of performing work using the attachment 60 in the vicinity of an obstacle 6 corresponding to a restricted area. Here, an example is shown in which the state changes in the order of state A1 → state A2 → state A3 → state A4 → state A5 in Figures 16A to 16E.

[0104] The plane 71 shown in Figures 16A to 16E represents the plane corresponding to the first threshold, and the plane 72 represents the plane corresponding to the second threshold.

[0105] State A1 in Figure 16A indicates that the attachment 60 is located away from the obstacle 6, and the degree of proximity is less than the second threshold. In this case, the judgment in step S408 is negated, and the display color of the display elements on the first screen is maintained at the normal color.

[0106] State A2 in Figure 16B indicates that the attachment 60 is approaching the obstacle 6, and the degree of approach has exceeded the first threshold. In this case, since the judgment in step S408 is affirmed when the degree of approach exceeds the first threshold, the display color of the display element on the first screen changes to a specific color. Note that even if the degree of approach exceeds the second threshold when transitioning from state A1 to state A2, the display color of the display element on the first screen does not change to a specific color at that point.

[0107] State A3 in Figure 16C shows the state in which the arm (attachment 60) is stopped at the position of the attachment 60 shown in state A2. In this case, the degree of approach is greater than the first threshold, and therefore greater than the second threshold, as in the case of state A2. For this reason, the judgment in step S412 is rejected, and the display color of the display element on the first screen is maintained at the specified color.

[0108] State A4 in Figure 16D shows the state in the process of moving the attachment 60 away from the obstacle 6 from state A3. In state A4, the degree of approach is less than the first threshold, but still greater than the second threshold. Therefore, the judgment in step S412 is repeatedly rejected, and the display color of the display element on the first screen is maintained at the specified color.

[0109] In state A5 of Figure 16E, the attachment 60 is even further away from the obstacle 6 than in state A4, and the degree of approach is smaller than the second threshold. Therefore, when the degree of approach becomes smaller than the second threshold, the judgment in step S412 is affirmed, and the display color of the display element on the first screen changes to the normal color.

[0110] Figures 17A to 17G illustrate the relationship between the posture of the work machine and the display color of the display element when the display color of the display element is changed in multiple stages.

[0111] Figures 17A to 17G show the posture of the work machine as viewed from the side of the arm, similar to Figures 16A to 16E. Here, we illustrate a case where work is performed using the attachment 60 in the vicinity of an obstacle 6 corresponding to a restricted area. Here, we show an example in which the state changes in the order of state B1 → state B2 → state B3 → state B4 → state B5 → state B6 → state B7 in Figures 17A to 17G.

[0112] The examples in Figures 17A to 17G show a case where the display color of the display elements on the first screen changes in three stages depending on the degree of proximity. For example, the display colors include a normal color, a first specific color (e.g., yellow, orange), and a second specific color (e.g., red). The second specific color corresponds to a greater degree of proximity compared to the first specific color.

[0113] Plane 71 shown in Figures 17A to 17G represents a plane corresponding to a first threshold for a first specific color, and plane 72 represents a plane corresponding to a second threshold for a first specific color. Furthermore, plane 81 shown in Figures 17A to 17G represents a plane corresponding to a first threshold for a second specific color, and plane 82 represents a plane corresponding to a second threshold for a second specific color.

[0114] State B1 in Figure 17A shows the case where the attachment 60 is located away from the obstacle 6, and the degree of proximity is less than the second threshold related to the first specific color. In this case, the display color of the display element is maintained at the normal color.

[0115] State B2 in Figure 17B indicates that the attachment 60 is approaching the obstacle 6, and the degree of approach has become greater than the first threshold for the first specific color. In this case, when the degree of approach exceeds the first threshold for the first specific color, the display color of the display element on the first screen changes to the first specific color.

[0116] State B3 in Figure 17C shows that the attachment 60 has moved further closer to the obstacle 6, and the degree of approach has exceeded the first threshold for the second specific color. In this case, when the degree of approach exceeds the first threshold for the second specific color, the display color of the display element on the first screen changes to the second specific color.

[0117] State B4 in Figure 17D shows the state in which the arm (attachment 60) is stopped at the position of attachment 60 shown in state B3. In this case, the degree of approach is greater than the first threshold for the second specific color, as in the case of state A3, and therefore greater than the second threshold for the second specific color. For this reason, the display color of the display elements on the first screen is maintained at the second specific color.

[0118] State B5 in Figure 17E shows the state in the process of moving the attachment 60 away from the obstacle 6 from state B4. In state B5, the degree of approach is less than the first threshold for the second specific color, but still greater than the second threshold for the second specific color. Therefore, the display color of the display element on the first screen is maintained at the second specific color.

[0119] In state B6 of Figure 17F, the attachment 60 is even further away from the obstacle 6 than in state B5, and the degree of approach is smaller than the second threshold for the second specific color. Therefore, when the degree of approach becomes smaller than the second threshold for the second specific color, the display color of the display element on the first screen changes to the first specific color.

[0120] In state B7 of Figure 17G, the attachment 60 is even further away from the obstacle 6 than in state B6. In state B7, the degree of proximity is less than the first threshold for the first specific color, but still greater than the second threshold for the first specific color. Therefore, the display color of the display element on the first screen is maintained at the first specific color.

[0121] Furthermore, during the transition from state B7 to the state corresponding to state A5 in Figure 16E, the degree of approach becomes smaller than the second threshold for the first specific color. Therefore, when the degree of approach becomes smaller than the second threshold for the first specific color, the display color of the display element on the first screen changes to the normal color.

[0122] Next, we will describe specific examples of display elements in the first screen to which multiple display colors (normal colors and specific colors) are applied.

[0123] Regarding the display elements on the first screen, for example, if the obstacle 6 shown in Figures 16A to 16E and Figures 17A to 17G is in front of the work machine, and the restricted area (set restricted area) that the work machine approaches is in front of the work machine, a suitable display element is, for example, the display bar 201 in Figure 2. In this case, the display bar 201 is a display element related to the restricted area in front of the work machine. Therefore, if the restricted area that the work machine approaches is in front of the work machine, by using the display bar 201 as a display element, the operator can easily grasp, for example, that the work machine is approaching an obstacle in front of it.

[0124] Similarly, when the set restricted area is behind, to the left, or to the right of the work machine, suitable display elements are, for example, display bars 202, 203, and 204 in Figure 2. In this case, the operator can easily understand, for example, that the work machine is approaching an obstacle to the rear, left, or right. Also, when the set restricted area is above and below the work machine, suitable display elements are, for example, display bars 101 and 102 in Figure 2. In this case, the operator can easily understand, for example, that the work machine is approaching an obstacle to the above or below.

[0125] When the set restriction area relates to the rotation angle of the swivel section, a suitable display element is, for example, the display bar 205 in Figure 2. In this case, the display bar 205 is a display element related to the rotation angle of the swivel section of the work machine. Therefore, when the restriction area approached by the work machine relates to the rotation angle of the swivel section, by using the display bar 205 as a display element, the operator can easily grasp, for example, that the swivel section of the work machine is approaching surrounding obstacles.

[0126] Since the display bar 205 is a continuous ring around the entire 360° circumference, the display bar 205 alone cannot indicate the range of rotation angles corresponding to the restricted area or the current rotation angle of the rotation section. For this reason, display elements indicating a specific circumferential direction on the display bar 205 may be used together with the display bar 205, or as an element other than the display bar 205. For example, the arc 205P on a concentric circle with the display bar 205 shown in Figure 11 may be used as a display element. Alternatively, a region indicating the range of rotation angles corresponding to the restricted area may be used as a display element, either overlapping with the display bar 205 or arranged around the display bar 205.

[0127] In this fourth embodiment, when the work machine approaches the restricted area, the display color of the display element is switched from the normal color to a specific color to alert the operator. Furthermore, when the work machine leaves the restricted area, the display color of the display element is returned to the normal color to inform the operator of this situation. In addition, the change in the display color of the display element allows the operator to recognize that the area setting system is functioning.

[0128] Furthermore, by setting a first threshold and a second threshold with different values, the display color of the display element can be appropriately controlled. For example, if the first threshold and the second threshold are set to the same value, the display color may switch frequently and cause display flickering when the degree of approach changes near this value. In this respect, the fourth embodiment eliminates such problems by setting a first threshold and a second threshold with different values, and also guides the operator to take actions that reliably move the work machine away from the restricted area when the work machine gets too close to the restricted area.

[0129] Furthermore, when switching between multiple specific colors (in the examples of Figures 17A to 17G, the first specific color and the second specific color), the operator can be informed in more detail of the degree to which the work machine is approaching the restricted area.

[0130] The operations shown in Figures 15 to 17G can be applied regardless of whether the area restriction shown in the first embodiment is turned on or off. For example, when the area restriction is turned off, the relationship between the posture of the work machine and the restricted area can be appropriately and in real time shown to the operator by the display color of the display element. This allows the operator to be guided to perform appropriate operations. When the area restriction is turned on, the control unit 14 performs operations related to the area restriction, and these operations make it possible to avoid interference between the work machine and obstacles, for example. However, even in such cases, by showing the relationship between the posture of the work machine and the restricted area in real time, effective support information can be provided to operators who are not skilled in operating the work machine.

[0131] In the fourth embodiment, the area setting system 10 may be provided with a notification unit 16 (Figure 1), and the notification unit 16 may output a signal that notifies the change in the display color of a display element by the first display unit 11A with a notification sound (an example of a first notification sound). This signal is input to an acoustic output device 52 (Figure 1), and the acoustic output device 52 outputs a notification sound. In this case, for example, the operator can confirm the change in the display color of the display element not only visually but also aurally. The notification sound may be a mechanical sound such as a buzzer, or it may be a human voice (for example, a voice that notifies that the display color has switched to a specific color or a normal color).

[0132] Depending on the operating status of the work machine, the presence or absence of a notification sound or the manner of the notification sound may be switched. That is, the notification unit 16 may change the presence or absence of output of the first notification sound or the manner of the first notification sound depending on the operating status of the work machine.

[0133] Furthermore, while the above explanation described the degree of approach as the distance or angle from the current position of the work machine (e.g., the position of the bucket) to the position where it reaches the restricted area, the degree of approach may also be determined by the distance or angle between the current position of the work machine and the obstacle. In this case, the comparison of the magnitude of the current distance or angle and each threshold in each flowchart should be set in reverse.

[0134] Figure 18 is a flowchart showing the processing of the notification unit when switching the presence or absence of a notification sound depending on the operation status of the work machine.

[0135] In step S602 of Figure 18, the notification unit 16 stops outputting the signal related to the notification sound.

[0136] In step S604, the notification unit 16 determines whether or not the display color of the display element has been changed by the first display unit 11A (steps S410 and S414 in Figure 15). If the determination is affirmative, the notification unit 16 proceeds to step S606; if the determination is negative, it proceeds to step S602.

[0137] In step S606, the notification unit 16 determines whether a specific operation has been performed on the work machine based on the signal received from the control device 50. If the determination is affirmative, the notification unit 16 proceeds to step S608; if the determination is negative, it proceeds to step S602.

[0138] Here, a specific operation may be, for example, any operation that involves moving the attachment. Alternatively, a specific operation may be limited to, for example, an operation that brings the attachment closer to a set restricted area.

[0139] In step S608, the notification unit 16 starts outputting a signal related to the notification sound and proceeds to step S604. This signal may be a signal that outputs different notification sounds depending on the direction of the change in the display color of the display element.

[0140] The type of notification sound may be switched depending on the operating status of the work machine. For example, if the judgment in step S606 is affirmative, a notification sound that attracts the operator's attention may be selected, and if the judgment in step S606 is negative, a notification sound that is not jarring to the operator may be selected.

[0141] In this way, by switching the presence or absence of notification sounds, or the manner in which they are emitted, depending on the operating status of the work machine, the annoyance of notifications made by sound in unnecessary situations can be eliminated.

[0142] <Fifth Embodiment> Next, a fifth embodiment of the present disclosure will be described. In the fifth embodiment, the display color of the display elements on the first screen is changed depending on whether or not the movement of the work machine is restricted by the control unit 14.

[0143] As shown in the first embodiment, when the area restriction is turned on, the control unit 14 restricts the movement of the work machine via the control device 50 so that, for example, the position of the attachment or the swivel angle of the swivel part does not exceed the boundary and enter the restricted area. Alternatively, the control unit 14 restricts the movement of the work machine via the control device 50 so that, for example, if the position of the attachment or the swivel angle of the swivel part exceeds the boundary and enters the restricted area, the speed of the attachment is suppressed or reduced.

[0144] The restriction of the work machine's movement by the control unit 14 is not performed at all times, but only when the work machine approaches the restricted area. Furthermore, whether or not the control unit 14 restricts the work machine's movement is not determined solely by the degree of approach described in the fourth embodiment, but also by the direction and speed of the work machine's movement. For example, even if the work machine is approaching the restricted area, if the work machine is being operated in a direction away from the restricted area, it will not be subject to the restriction of the work machine's movement by the control unit 14. Also, even if the work machine is some distance from the restricted area, if the work machine is rapidly approaching the restricted area, the control unit 14 will restrict the work machine's movement.

[0145] Therefore, in the fifth embodiment, the display color of the display element is changed at a different timing than in the fourth embodiment.

[0146] Figure 19 is a flowchart showing the processing in the first display unit related to setting the display color of the display elements in the fifth embodiment.

[0147] In step S502 of Figure 19, the first display unit 11A sets the display color of the display elements on the first screen to a normal color (an example of a first display color, e.g., white, black, etc.). The normal color indicates a state in which the movement of the work machine by the control unit 14 is not restricted. On the other hand, the specific color (an example of a second display color, e.g., red, yellow, orange, etc.) indicates a state in which the movement of the work machine by the control unit 14 is restricted.

[0148] In step S504, the first display unit 11A receives a signal from the control unit 14 indicating whether or not the movement of the work machine is restricted. This signal indicates in real time whether or not the movement of the work machine is restricted.

[0149] In step S506, the first display unit 11A determines whether the signal acquired in step S504 indicates that the movement of the work machine is restricted. If the determination is affirmative, the process proceeds to step S508; otherwise, the process proceeds to step S510.

[0150] In step S508, the first display unit 11A sets (changes) the display color of the display elements on the first screen to a specific color and proceeds to step S504. On the other hand, in step S510, the first display unit 11A sets (changes) the display color of the display elements on the first screen to a normal color and proceeds to step S504.

[0151] Thus, in the fifth embodiment, the display color of the display elements on the first screen switches in real time depending on whether or not the movement of the work machine is restricted. For example, the operator can confirm that the movement restriction operation by the control unit 14 is being performed correctly.

[0152] The display elements on the first screen are preferably display elements corresponding to the set limiting area, similar to the fourth embodiment. That is, when the set limiting area is in front of, behind, to the left of, or to the right of the work machine, suitable display elements are, for example, display bars 201, 202, 203, and 204 in Figure 2. When the set limiting area is above and below the work machine, suitable display elements are, for example, display bars 101 and 102 in Figure 2. When the set limiting area relates to the rotation angle of the swivel section, suitable display elements are, for example, display bar 205 in Figure 2, or a display element indicating a specific circumferential direction on display bar 205.

[0153] In these cases, for example, the operator can easily understand which limiting areas (forward / backward, left / right, up / down, and swivel angles) the limitations on the movement of the work machine are related to.

[0154] In the fifth embodiment, the area setting system 10 may be provided with a notification unit 16 (Figure 1), and the notification unit 16 may output a signal that notifies the user of a change in the display color of a display element by the first display unit 11A using a notification sound (an example of a first notification sound). This signal is input to an acoustic output device 52 (Figure 1), and the acoustic output device 52 outputs a notification sound. In this case, the same effect as when the notification unit 16 is provided in the fourth embodiment can be obtained.

[0155] Furthermore, as shown in the fourth embodiment, the presence or absence or manner of the notification sound may be switched depending on the operating status of the work machine. In this case, the process shown in Figure 18 can be applied. In this case, the same effect as when the notification unit 16 is provided in the fourth embodiment can be obtained.

[0156] <Sixth Embodiment> As shown in the first embodiment, the control unit 14 receives a switch on or off of the operation that restricts the movement of the work machine (area restriction on / off) based on an operation to the reception unit 12. In the sixth embodiment, the notification unit 16 outputs a signal indicating the operating status of the control unit 14, specifically, that the area restriction has been switched on or off. In this case, in response to the output signal, the first display unit 11A displays on the first screen that the area restriction has been switched on or off. Also, in response to the output signal, the sound output device 52 outputs a sound (for example, a buzzer sound or voice) indicating that the area restriction has been switched on or off.

[0157] Figure 20 is a flowchart showing the processing in the notification unit.

[0158] In step S702 of Figure 20, the notification unit 16 determines whether the area restriction has been switched from off to on based on the signal from the control unit 14. If the determination is affirmative, the process proceeds to step S706; if the determination is negative, the process proceeds to step S704.

[0159] In step S704, the notification unit 16 determines, based on the signal from the control unit 14, whether or not the area restriction has been switched from on to off. If the determination is positive, the process proceeds to step S708; otherwise, the process proceeds to step S702.

[0160] In step S706, the notification unit 16 outputs a signal indicating that the area restriction has been switched from off to on, and proceeds to step S704. Depending on the signal output in step S706, for example, the first display unit 11A may display the text "Area restriction function has been turned on" superimposed on the first screen currently being displayed. Also, depending on the signal output in step S706, for example, the sound output device 52 may output the audio "Area restriction function has been turned on".

[0161] In step S708, the notification unit 16 outputs a signal indicating that the area restriction has been switched from on to off, and proceeds to step S702. Depending on the signal output in step S708, for example, the first display unit 11A may superimpose the text "Please keep an eye on your surroundings while driving" onto the first screen currently being displayed. Alternatively, depending on the signal output in step S708, for example, the sound output device 52 may output the audio message "Please keep an eye on your surroundings while driving while the area restriction is removed."

[0162] In the sixth embodiment, information indicating when the area restriction is switched from off to on, and when the area restriction is switched from on to off, can be presented to the operator, etc., respectively. Therefore, the operator, etc., can understand the situation without misinterpreting the direction of the area restriction switch (off to on or on to off).

[0163] <Seventh Embodiment> The notification unit 16 may output a signal that notifies the user, either by display or sound (for example, a buzzer sound or voice), that the work machine has been driven.

[0164] For example, if the posture acquisition unit 13 calculates the posture of the work machine based only on the movement of the upper rotating body of the work machine, the calculation result by the posture acquisition unit 13 will no longer match the actual position (posture) of the work machine when the work machine is driven by the lower traveling body. For example, the position and angle of the attachment calculated by the posture acquisition unit 13 will deviate from the actual position and angle of the attachment. In such cases, the positional relationship between the set restriction area and the work machine becomes unclear. That is, for example, a discrepancy may arise between the restriction area set to avoid contact with an obstacle and the actual position of the obstacle.

[0165] In the seventh embodiment, when the work machine is moved, the notification unit 16 detects the movement based on a signal obtained from the control device 50. When movement is detected, the notification unit 16 outputs a signal indicating that the work machine has been detected moving. In this case, based on the signal from the notification unit 16, the first display unit 11A can display a message on the first screen to alert the operator or the like. For example, the first display unit 11A may superimpose the text "Please check the area restriction settings" on the first screen currently being displayed. The sound output device 52 also outputs a sound (for example, a buzzer sound or voice) to alert the operator or the like. For example, the sound output device 52 may output a voice message "Please check the area restriction settings".

[0166] In the seventh embodiment, when the work machine is in motion, a warning related to the set area limit can be issued. This prevents misjudging the distance from the work machine to an obstacle, for example, and enhances safety during work.

[0167] <Eighth Embodiment> For example, the attitude acquisition unit 13 can acquire position information of the work machine using GNSS (Global Navigation Satellite System) or the like, and use this to calculate (update) the attitude of the work machine. In this case, for example, even if the work machine moves by driving, the attitude acquisition unit 13 can correctly calculate the attitude of the work machine and can also calculate, for example, the position and angle of the attachment.

[0168] However, for example, if the position information of the work machine is not available, the posture acquisition unit 13 will not be able to correctly calculate the posture of the work machine if the work machine moves (travels).

[0169] In the eighth embodiment, the notification unit 16 outputs a signal, either on the screen or by sound, to notify that it is no longer possible to calculate (update) the posture of the work machine based on the position information in the posture acquisition unit 13. In this case, based on the signal from the notification unit 16, the first display unit 11A can display a message on the first screen to alert the operator or the like. For example, the first display unit 11A may superimpose the text "Please check the area limit settings" on the first screen currently being displayed. The sound output device 52 also outputs a sound (for example, a buzzer sound or voice) to alert the operator or the like. For example, the sound output device 52 may output a voice message "Please check the area limit settings".

[0170] In the eighth embodiment, when the work machine is in motion, a warning related to the set area limit can be issued. This prevents misjudging the distance from the work machine to an obstacle, for example, and enhances safety during work.

[0171] <Ninth Embodiment> It may be possible to switch the display screen from the first screen to another screen (for example, a settings screen) during operation. In this case, while the other screen is displayed, the operator or the like will not be able to monitor via the first screen.

[0172] In the ninth embodiment, when the display target of the first display unit 11A is switched from the first screen to another screen, the notification unit 16 detects this fact (screen switching) based on the signal from the first display unit 11A and outputs a signal to notify with a second notification sound. This signal is input to the sound output device 52, and the sound output device 52 outputs the second notification sound.

[0173] In this case, for example, the operator can confirm not only through the screen but also through hearing that the display target of the first display unit 11A has been switched from the first screen to another screen. The notification sound may be a mechanical sound such as a buzzer, or it may be a human voice (for example, a voice informing that the screen has been switched to another screen).

[0174] The second notification sound can be a different sound (distinguishable sound) from the first notification sound shown in the fourth embodiment. In this case, the second notification sound can be distinguished from the first notification sound, so that operators can distinguish and recognize the change in the display color of the display elements by the first display unit 11A (first notification sound) and the switching to another screen (second notification sound) based on the notification sound.

[0175] The conditions under which the second notification sound is used can also be limited. For example, if no restricted area is set, the second notification sound does not need to be used. Alternatively, the second notification sound may be used only when the area restriction by the control unit 14 is turned on.

[0176] In this way, by setting conditions for when a second notification sound is used, it is possible to avoid the annoyance of unnecessary notification sounds.

[0177] <Tenth Embodiment> Figure 21 is a diagram showing another display example on the first screen. Figures 22 to 24 are diagrams showing the lighting patterns (display color arrangement patterns) in the display example shown in Figure 21.

[0178] In the example shown in Figure 21, in addition to the display bars 101 and 102 shown in Figure 2, the first screen also includes display bar 103, display bar 104, display area 105, display area 106, display area 107, and display area 108.

[0179] Specifically, a display bar 103 is provided to the left of area 100 to indicate whether the front area restriction relative to the attachment position is on or off, and a display bar 104 is provided to the right of area 100 to indicate whether the rear area restriction relative to the attachment position is on or off. In other words, display bar 103 has the same function as display bar 201 shown in Figure 2. Also, display bar 104 has the same function as display bar 202 shown in Figure 2. Thus, functions related to the front and rear restricted areas may be provided to display bars 103 and 104 together with display bars 201 and 202, or in place of display bars 201 and 202.

[0180] Furthermore, in the example shown in Figure 21, region 105 is provided in the upper left direction of region 100, region 106 in the lower left direction of region 100, region 107 in the upper right direction of region 100, and region 108 in the lower right direction of region 100.

[0181] The illumination state (display color) of display bar 101 (Figure 2) should be directly replaced with the illumination state (display color) of display bar 101, as shown in Figure 22. The same applies to display bar 102.

[0182] Furthermore, the illuminated state of the display bar 201 (Figure 2) can be replaced with the illuminated state of the display bar 103, as shown in Figure 23. In this way, the display bar 201 (Figure 2), which is displayed in accordance with the region 200 of the graphic image when the work machine is viewed from above along the vertical direction, can be replaced with the display bar 103, which is displayed in accordance with the region 100 of the graphic image when the work machine is viewed along the horizontal direction.

[0183] Similarly, the illumination state of display bar 202 (Figure 2) can be replaced with the illumination state of display bar 104 shown in Figure 21.

[0184] Instead of simultaneously illuminating display bar 101 and display bar 103, as shown in Figure 24, the area 105 sandwiched between display bar 101 and display bar 103 may be illuminated. In this case, in addition to area 105, display bar 101 and display bar 103 may also be illuminated simultaneously. By adding areas 105, 106, 107, and 108 to the display elements in this way, a display state with better visibility can be generated.

[0185] Although each embodiment has been described in detail above, the invention is not limited to any particular embodiment, and various modifications and changes are possible within the scope described in the claims. Furthermore, it is possible to combine all or more of the components of the embodiments described above.

[0186] A region setting system relating to the first aspect of this disclosure comprises a display unit and a setting unit. The display unit has a screen that displays an image corresponding to an input display signal and is capable of receiving command signals through operation on the screen. The setting unit inputs the display signal to the display unit so as to display on the screen at least one of a machine image, which is an image of the work machine viewed along the horizontal direction and an image of the work machine viewed along the vertical direction, and a setting image for setting a boundary that defines a restricted area in the work machine. The setting unit receives the command signal input to the display unit through operation on the setting image on the screen and sets the boundary, and inputs the display signal to the display unit so as to display the set boundary on the screen in correspondence with the machine image.

[0187] In the second aspect of the present disclosure, the area setting system may, in the first aspect, set the boundary such that the boundary defines a restricted area where the boundary corresponds to the position of the attachment of the work machine or the rotation angle of the swivel part of the work machine.

[0188] In the third aspect of the present disclosure, the area setting system may, in the first or second aspect, allow the setting unit to change the position of the boundary in response to operations on the setting image on the screen.

[0189] The area setting system relating to the fourth aspect of this disclosure allows for the setting of a plurality of restricted areas for the work machine in the first to third aspects, and the setting unit may set the boundary corresponding to the operated operating unit via operation of an operating unit included in the setting image provided for each of the plurality of restricted areas.

[0190] The area setting system relating to the fifth aspect of this disclosure further comprises an attitude acquisition unit capable of acquiring attitude information, which is information relating to the attitude of the work machine, in the first to fourth aspects, and the setting unit may set the boundary based on the position of the attachment corresponding to the attitude information acquired by the attitude acquisition unit.

[0191] The area setting system relating to the sixth aspect of this disclosure includes an attitude acquisition unit capable of acquiring attitude information, which is information relating to the attitude of the work machine, in the first to fourth aspects, and the setting unit may set the boundary based on the rotation angle of the rotation unit corresponding to the attitude information acquired by the attitude acquisition unit.

[0192] In the area setting system relating to the seventh aspect of this disclosure, the setting unit may set the boundary based on numerical input operations to the setting image on the screen in the first to sixth aspects.

[0193] In the area setting system relating to the eighth aspect of this disclosure, in the first to seventh aspects, the setting unit accepts setting and desetting of the boundary by operation of the operation unit included in the setting image displayed on the screen, and inputs a display signal to the display unit so as to present the current state corresponding to either setting or desetting the boundary in the display form of the setting image on the screen.

[0194] A region setting system relating to the ninth aspect of the present disclosure further comprises: a posture acquisition unit capable of acquiring posture information, which is information relating to the posture of the work machine, in the first to eighth aspects; and a control unit that restricts the movement of the work machine in accordance with the current status of the work machine related to the restricted region, which is acquired based on the posture information acquired by the posture acquisition unit and the boundary set by the setting unit, wherein the setting unit may input the display signal to the display unit so that the display unit displays the operating status of the control unit or the status of the work machine on the screen.

[0195] The area setting system relating to the tenth aspect of this disclosure further comprises an attitude acquisition unit capable of acquiring attitude information, which is information relating to the attitude of the work machine, in the first to ninth aspects, and the setting unit may input a display signal to the display unit so as to display an image showing the current attitude of the work machine along with an image showing the boundary on the screen.

[0196] In the eleventh aspect of the present disclosure, the area setting system may also be such that, in the first to tenth aspects, the setting unit inputs a display signal to the display unit for displaying the at least one machine image and the captured image including the work machine in association.

[0197] In the region setting system relating to the twelfth aspect of the present disclosure, in the first to eleventh aspects, the setting unit may input a display signal to the display unit for displaying a captured image including the work machine superimposed on the at least one machine image.

[0198] In the thirteenth aspect of the present disclosure, the area setting system may also be such that, in the first to twelfth aspects, the setting unit inputs a display signal to the display unit for displaying the captured image at a position different from the at least one machine image, so that the at least one machine image and the captured image including the work machine can be viewed simultaneously.

[0199] A region setting system relating to the 14th aspect of the present disclosure further comprises: a posture acquisition unit capable of acquiring posture information, which is information relating to the posture of the work machine, in the first to 13th aspects; and a control unit that restricts the movement of the work machine in accordance with the current state of the work machine related to the restricted region, which is acquired based on the posture information acquired by the posture acquisition unit and the boundary set by the setting unit, wherein the setting unit inputs a display signal to the display unit such that when the control unit is restricting the movement of the work machine, the display unit displays the at least one machine image and the captured image including the boundary and the work machine, respectively, and when the control unit is not restricting the movement of the work machine, the display unit displays the captured image including the work machine without displaying the at least one machine image and the boundary.

[0200] In the area setting system relating to the 15th aspect of the present disclosure, in the first to 14th aspects, the setting unit may input a display signal to the display unit for displaying a warning display of the surrounding detection alarm system in association with at least one of the machine images.

[0201] The area setting system relating to the 16th aspect of the present disclosure includes an attitude acquisition unit capable of acquiring attitude information, which is information relating to the attitude of the work machine, in the first to 15 aspects, and the display unit may change the display color of the display elements on the screen in accordance with the degree of approach of the work machine to the restricted area, which is acquired based on the attitude information acquired by the attitude acquisition unit and the boundary set via the setting unit.

[0202] The area setting system relating to the 17th aspect of the present disclosure, in the first to 16th aspects, the display unit changes the display color from a first display color to a second display color when the degree of approach of the work machine increases and exceeds a first threshold, and changes the display color from a second display color to a first display color when the degree of approach of the work machine decreases and exceeds a second threshold, and the first threshold may correspond to a state in which the work machine is closer to the restricted area compared to the second threshold.

[0203] The area setting system relating to the 18th aspect of the present disclosure comprises, in the first to 17th aspects, an attitude acquisition unit capable of acquiring attitude information, which is information relating to the attitude of the work machine, and a control unit that restricts the movement of the work machine in accordance with the current status of the work machine related to the restricted area, which is acquired based on the attitude information acquired by the attitude acquisition unit and the boundary set via the setting unit, wherein the display unit may change the display color of the display elements on the screen depending on whether or not the movement of the work machine is restricted by the control unit.

[0204] The area setting system relating to the 19th aspect of this disclosure may include a notification unit that outputs a signal to notify of a change in the display color of the display element by the display unit using a first notification sound in the 16th or 18th aspect.

[0205] In the area setting system relating to the 20th aspect of the present disclosure, in the 19th aspect, the notification unit may change whether or not to output the first notification sound or the manner in which the first notification sound is output depending on the state of operation of the work machine.

[0206] A region setting system relating to the 21st aspect of the present disclosure comprises, in the first to 20 aspects, a posture acquisition unit capable of acquiring posture information which is information relating to the posture of the work machine; a control unit that restricts the movement of the work machine in accordance with the current state of the work machine related to the restricted region, which is acquired based on the posture information acquired by the posture acquisition unit and the boundary set via the setting unit; and a notification unit that notifies the operating state of the control unit, wherein the control unit accepts a switch on or off of an operation to restrict the movement of the work machine based on an operation on the setting unit, and the notification unit may output a signal that notifies the switch on or off of the operation in the control unit by display on the display unit or by sound.

[0207] The area setting system relating to the 22nd aspect of the present disclosure may include a notification unit that outputs a signal to notify, by display on the display unit or by sound, that the work machine has been driven in the first to 21st aspects.

[0208] The area setting system relating to the 23rd aspect of this disclosure comprises, in the first to 22 aspects, an attitude acquisition unit capable of acquiring attitude information, which is information relating to the attitude of the work machine, and a notification unit that notifies the operating status of the attitude acquisition unit, wherein the attitude acquisition unit updates the attitude information of the work machine based on position information, and the notification unit may output a signal that notifies the attitude acquisition unit that it is no longer possible to update the attitude of the work machine based on the position information, either by displaying it on the screen or by sound.

[0209] In the area setting system relating to the 24th aspect of the present disclosure, in the 19th aspect, the display unit is capable of displaying a different screen from the screen, and the notification unit may output a signal that notifies the user by a second notification sound when the display target of the display unit is switched from the screen to the different screen.

[0210] In the domain setting system relating to the 25th aspect of the present disclosure, in the 24th aspect, the second notification sound may be a sound that is distinguishable from the first notification sound.

Claims

1. An area setting system comprising: a display unit having a screen that displays an image corresponding to an input display signal and capable of receiving command signals through operation on the screen; and a setting unit that inputs the display signal to the display unit so as to display on the screen at least one of a machine image, which is an image of the work machine viewed along the horizontal direction and an image of the work machine viewed along the vertical direction, and a setting image for setting a boundary that defines a restricted area in the work machine, and sets the boundary by receiving the command signal input to the display unit through operation on the setting image on the screen, and inputs the display signal to the display unit so as to display the set boundary on the screen in correspondence with the machine image.

2. The area setting system according to claim 1, wherein the setting unit sets the boundary so that the boundary defines a limiting area corresponding to the position of the attachment of the work machine or the rotation angle of the swivel part of the work machine.

3. The region setting system according to claim 1, wherein the setting unit is capable of changing the position of the boundary in response to operations on the setting image on the screen.

4. The area setting system according to claim 2, wherein a plurality of restricted areas can be set for the work machine, and the setting unit sets the boundary corresponding to the operated operating unit via operation of an operating unit included in the setting image provided for each of the plurality of restricted areas.

5. The region setting system according to claim 2, further comprising a posture acquisition unit capable of acquiring posture information which is information relating to the posture of the work machine, wherein the setting unit sets the boundary based on the position of the attachment corresponding to the posture information acquired by the posture acquisition unit.

6. The region setting system according to claim 2, comprising a posture acquisition unit capable of acquiring posture information which is information relating to the posture of the work machine, wherein the setting unit sets the boundary based on the rotation angle of the rotation unit corresponding to the posture information acquired by the posture acquisition unit.

7. The area setting system according to claim 1, wherein the setting unit sets the boundary based on numerical input operations to the setting image on the screen.

8. The area setting system according to claim 1, wherein the setting unit accepts setting and desetting of the boundary by operation of the operation unit included in the setting image displayed on the screen, and inputs a display signal to the display unit so as to present the current state corresponding to either setting or desetting the boundary in the display format of the setting image on the screen.

9. The region setting system according to claim 1, further comprising: a posture acquisition unit capable of acquiring posture information which is information relating to the posture of the work machine; and a control unit that restricts the movement of the work machine in accordance with the current status of the work machine related to the restricted region, which is acquired based on the posture information acquired by the posture acquisition unit and the boundary set by the setting unit, wherein the setting unit inputs the display signal to the display unit so that the display unit displays the operating status of the control unit or the status of the work machine on the screen.

10. The region setting system according to claim 1, further comprising a posture acquisition unit capable of acquiring posture information which is information relating to the posture of the work machine, wherein the setting unit inputs a display signal to the display unit so as to display an image showing the current posture of the work machine together with an image showing the boundary on the screen.

11. The area setting system according to any one of claims 1 to 10, wherein the setting unit inputs a display signal to the display unit for displaying the image of at least one machine and the captured image including the work machine in association.

12. The area setting system according to claim 11, wherein the setting unit inputs a display signal to the display unit for displaying a captured image including the work machine superimposed on the image of at least one machine.

13. The area setting system according to claim 11, wherein the setting unit inputs a display signal to the display unit for displaying the captured image at a position different from the at least one machine image so that the at least one machine image and the captured image including the work machine can be viewed simultaneously.

14. The region setting system according to claim 11, further comprising: a posture acquisition unit capable of acquiring posture information which is information relating to the posture of the work machine; and a control unit that restricts the movement of the work machine in accordance with the current state of the work machine related to the restricted region, which is acquired based on the posture information acquired by the posture acquisition unit and the boundary set by the setting unit, wherein the setting unit inputs a display signal to the display unit such that when the control unit is restricting the movement of the work machine, the display unit displays the at least one machine image and the boundary and the work machine, respectively, and when the control unit is not restricting the movement of the work machine, the display unit displays the photograph including the work machine without displaying the at least one machine image and the boundary.

15. The area setting system according to any one of claims 1 to 14, wherein the setting unit inputs a display signal to the display unit for displaying a warning display of the surrounding detection alarm system in association with at least one of the machine images.

16. The region setting system according to claim 1, further comprising a posture acquisition unit capable of acquiring posture information which is information relating to the posture of the work machine, wherein the display unit changes the display color of the display elements on the screen in accordance with the degree of approach of the work machine to the restricted region, which is acquired based on the posture acquired by the posture acquisition unit and the boundary set via the setting unit.

17. The area setting system according to claim 16, wherein the display unit changes the display color from a first display color to a second display color when the degree of approach of the work machine increases and exceeds a first threshold, and changes the display color from a second display color to a first display color when the degree of approach of the work machine decreases and exceeds a second threshold, and the first threshold corresponds to a state in which the work machine is closer to the restricted area compared to the second threshold.

18. The region setting system according to claim 1, further comprising: a posture acquisition unit capable of acquiring posture information which is information relating to the posture of the work machine; and a control unit that restricts the movement of the work machine in accordance with the current status of the work machine related to the restricted region, which is acquired based on the posture information acquired by the posture acquisition unit and the boundary set via the setting unit, wherein the display unit changes the display color of the display elements on the screen depending on whether or not the movement of the work machine is restricted by the control unit.

19. The area setting system according to claim 16 or 18, further comprising a notification unit that outputs a signal to notify of a change in the display color of the display element by the display unit using a first notification sound.

20. The area setting system according to claim 19, wherein the notification unit changes whether or not to output the first notification sound or the manner of outputting the first notification sound according to the operation status of the work machine.

21. The area setting system according to claim 1, further comprising: a posture acquisition unit capable of acquiring posture information which is information relating to the posture of the work machine; a control unit that restricts the movement of the work machine in accordance with the current state of the work machine related to the restricted area, which is acquired based on the posture information acquired by the posture acquisition unit and the boundary set via the setting unit; and a notification unit that notifies the operating state of the control unit, wherein the control unit accepts a switch on or off of an operation to restrict the movement of the work machine based on an operation on the setting unit, and the notification unit outputs a signal that notifies the switch on or off of the operation in the control unit by display on the display unit or by sound.

22. The area setting system according to claim 1, further comprising a notification unit that outputs a signal that notifies the user, by display or sound, that the work machine has been driven.

23. The area setting system according to claim 1, further comprising: a posture acquisition unit capable of acquiring posture information which is information relating to the posture of the work machine; and a notification unit that notifies the operating status of the posture acquisition unit, wherein the posture acquisition unit updates the posture information of the work machine based on position information; and the notification unit outputs a signal that notifies, by display on the screen or by sound, that it is no longer possible for the posture acquisition unit to update the posture information of the work machine based on the position information.

24. The area setting system according to claim 19, wherein the display unit is capable of displaying a screen different from the screen, and the notification unit outputs a signal that notifies the user by a second notification sound when the display target of the display unit is switched from the screen to the other screen.

25. The area setting system according to claim 24, wherein the second notification sound is a sound indistinguishable from the first notification sound.

Images