JP2018155872A - Information display system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To safely display information.SOLUTION: An information display system (10) comprises: an attachment-type display (20) which can be attached to a user (90), and can display information within a field of view (91) of the user; a monitor object information acquisition part (32) which can acquire monitor object information (44) being information related to a monitor object (12); a visual field information acquisition part (33) for acquiring visual field information for specifying the field of view of the user; a monitor object identification part (34) for identifying the monitor object existing in the field of view of the user on the basis of the visual field information which is acquired by the visual field acquisition part; and a display control part (35) for displaying a direction indication display (43) indicating that the monitor object information is displayed in the field of view of the user by the user who is directed to a specified direction in the field of view of the user when capturing the monitor object within the field of view of the user, and displaying the monitor object information in the field of view of the user by making the user follow to direct a direction indicated by the direction indication display.SELECTED DRAWING: Figure 6

Description

  The present invention relates to an information display system for displaying information related to a monitoring target in a user's field of view by a display of a type worn on the user's head.

  In recent years, a technique for displaying, for example, a virtual reality image and various information using a head-mounted display (hereinafter referred to as an HMD) that can be mounted on a user's head has been proposed. As an application of this technology, for example, to present information related to the safety of the robot or transport vehicle to the user working in or near the work area of the robot or transport vehicle, the user attaches information related to the safety. Display on the HMD. According to this, since the user can acquire information on the safety of the robot and the transport vehicle without looking into the teaching pendant or the tablet terminal, the safety can be improved. Figured.

  However, most of the general HMDs have a configuration in which a transmissive display unit is arranged in a place overlapping with the user's field of view and various information is displayed on the display unit. In this case, the information displayed on the display unit overlaps the actual scene that the user is looking through the display unit. For this reason, for example, when information is suddenly displayed on the display unit while the user is walking, the user's field of view is blocked. However, even in such a case, without stopping the walking, the user is obstructed from the field of view and proceeds with insufficient safety confirmation ahead, resulting in a collision with some object, etc. There is a possibility of getting involved in an unexpected situation.

JP 2015-228201 A

  The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an information display system capable of safely presenting information when presenting information to a user using a wearable display.

(Claim 1)
The information display system according to claim 1 is a wearable display that can be worn by a user and capable of displaying information in the user's field of view, and a monitoring target information acquisition unit that can acquire monitoring target information that is information about the monitoring target. A visual field information acquisition unit that acquires visual field information for specifying the visual field of the user, and a monitoring target identification unit that identifies a monitoring target existing in the visual field of the user based on the visual field information acquired by the visual field information acquisition unit Then, when the monitoring target is captured in the user's field of view, the direction presentation display indicating that the monitoring target information is displayed in the user's field of view when the user faces a specific direction is displayed in the user's field of view. And a display control unit that displays the monitoring target information in the user's field of view in accordance with the user pointing in the direction indicated by the direction presentation display.

  According to this, for example, when the user is walking and is approaching the monitoring target, the direction presentation display is displayed in the user's field of view so that the direction presentation display is directed to the user. Can be encouraged. As a result, the user who has difficulty in seeing the traveling direction by deliberately removing the user's line of sight from the front of the user, that is, the traveling direction of the user, has a higher possibility of stopping once feeling danger. Then, the monitoring target information is appropriately presented to the user while stopping the movement of the user by displaying the monitoring target information in the user's field of view in accordance with the user pointing in the direction indicated by the direction presentation display. can do. Thereby, when the user is moving, etc., it is possible to suppress excessive proximity to the monitoring target, and as a result, it is possible to present safe information.

  Further, according to this configuration, even when the direction presentation display is displayed in the user's field of view, if the user does not go in the direction indicated by the direction presentation display, the monitoring target information is not displayed in the user's field of view. Do not show. Therefore, when the user is not willing to view the monitoring target information, the user can not display the monitoring target information in the field of view by not turning around in the direction indicated by the direction presentation display. Thereby, even if it is a case where a direction presentation display is displayed in a visual field, the user can display monitoring object information by one's intention. Therefore, even when the user is not willing to view the monitoring target information, it is possible to prevent the monitoring target information from being displayed in the user's field of view and obstructing the field of view.

(Claim 2)
In the information display system according to claim 2, the display control unit displays the direction presentation display on the upper part in the user's field of view when the monitoring target is captured in the user's field of view. According to this, it is possible to prompt the user to look upward. In this case, since it becomes difficult for the user to see his / her feet, there is a higher possibility that the user will feel danger and stop. That is, when the user looks upwards according to the direction presentation display, the user has a posture in which the body slightly warps backward, that is, a swaying posture. Such a posture is not suitable for walking because the center of gravity of the body is located slightly rearward. For this reason, for example, the user who walks can be stopped more effectively and an unreasonable walk can be suppressed, and as a result, safer information presentation becomes possible.

(Claim 3)
The display control unit displays the direction presentation display as a semi-transparent arrow graphic at a position overlapping the monitoring target when the monitoring target is captured in the user's field of view. According to this, since the direction presentation display is displayed as an arrow figure at the monitoring target being viewed by the user, that is, at the end of the user's line of sight, the user can easily recognize which direction should be directed instantly. Moreover, since the arrow figure which comprises a direction presentation display is translucent, even if it overlaps with the monitoring object, it is hard to disturb a user's view.

  According to this configuration, since the direction presentation display is displayed as an arrow at a position overlapping with the monitoring target, the user overlaps the information displayed at the tip of the direction presentation display arrow with the direction presentation display. It can be easily recognized that it is related to the monitoring target. That is, if a general user sees an arrow that overlaps the monitoring target, it seems that there is information related to the monitoring target at the tip of the arrow. Therefore, when the user captures a plurality of monitoring targets in the field of view, the user can easily grasp which monitoring target in the field of view the monitoring target information shown at the tip of the direction presentation display. . As a result, since the user can see the monitoring target and the monitoring target information in association with each other, the monitoring target information can be easily understood.

(Claim 4)
The display control unit displays an opaque display area in the user's field of view and displays the monitoring target information in the display area. According to this, it is possible to prevent the monitoring target information displayed in the opaque display area from being mixed into the actual scene behind the display area. Thereby, monitoring object information can be made easier to see.

(Claim 5)
The display control unit displays the monitoring target information at a position that does not overlap the monitoring target. According to this, it is possible to prevent the monitoring target information displayed in the user's field of view from overlapping the monitoring target, making it difficult to see the monitoring target information, and it is also possible to prevent the monitoring target itself from becoming difficult. That is, according to this, the user can appropriately view the monitoring target information while keeping the monitoring target in view. As a result, safer information can be presented.

(Claim 6)
The display control unit displays at least one of the direction presentation display and the monitoring target information as the distance from the user to the monitoring target approaches. In this case, if the direction presentation display is displayed larger as the distance from the user to the monitoring target is closer, the direction presentation display becomes larger as the user gets closer to the monitoring target, giving a sense of pressure to the user. it can. Therefore, it becomes easier for the user to stop.

  Further, even when the user looks up at the monitoring target information, for example, not all users stop. That is, it is also conceivable that the user walks while looking up at the monitoring target information, for example, looking up. On the other hand, with this configuration, as the distance from the user to the monitoring target approaches, the monitoring target information is displayed larger, so that even if the user tries to walk while looking up at the monitoring target information, for example, looking upward, If the object is closer to the monitoring target, the monitoring target information becomes larger, and a feeling of pressure can be given to the user. Therefore, it is possible to suppress a situation where the user walks while viewing the monitoring target information. As a result, safer information can be presented.

The figure which shows typically schematic structure of the information display system by 1st Embodiment. The block diagram which shows typically the electric constitution of the information display system by 1st Embodiment. The figure which shows an example of the visual field which permeate | transmits a display part and is visible to a user about 1st Embodiment, and shows the case where the monitoring target is caught in the visual field The figure which shows an example of the view which permeate | transmits a display part and is visible to a user about 1st Embodiment, and shows the case where a direction presentation display is displayed The first embodiment shows an example of a field of view that can be seen by the user through the display unit, and shows a case where the user faces upward from the state of FIG. FIG. 5 is a diagram illustrating an example of a field of view that is visible to the user through the display unit according to the first embodiment, and illustrates a case where the user further faces upward from the state illustrated in FIG. 5. FIG. 6 is a diagram illustrating an example of a field of view that is visible to the user through the display unit according to the first embodiment, and illustrates a case where the user approaches the monitoring target from the state illustrated in FIG. 6. The flowchart which shows the processing content performed by the control part of a display control apparatus about 1st Embodiment. The figure which shows an example of the view which permeate | transmits a display part and is visible to a user about 2nd Embodiment, and shows the case where a direction presentation display is displayed The second embodiment shows an example of a field of view that can be seen by the user through the display unit, and shows a case where the user faces upward from the state of FIG. About 2nd Embodiment, it shows an example of the visual field which a user sees through a display part, and is a figure which shows the case where a user faces further upward from the state of FIG.

  Hereinafter, a plurality of embodiments of the present invention will be described. In each embodiment, substantially the same components are denoted by the same reference numerals and description thereof is omitted.

(First embodiment)
A first embodiment will be described with reference to FIGS. As shown in FIGS. 1 and 2, the information display system 10 includes at least one monitor object 11, 12 in this case, a safety device 13, and a head-mounted display 20 called a so-called head-mounted display. (Hereinafter referred to as HMD 20) and a display control device 30. In the case of this embodiment, two types of targets are assumed as monitoring targets. One is a permanent body such as a robot that remains at a certain location, for example, as shown as the monitoring target 11. The other is a moving body such as a transport vehicle that moves as needed without staying at a certain location, as shown as the monitoring object 12. Note that the monitoring target is not limited to a robot or a transport vehicle.

  The robot 11 to be monitored is composed of, for example, a 6-axis vertical articulated robot. Although a detailed description of a general configuration is omitted, the robot 11 has a six-axis arm driven by a servo motor, and grips a workpiece accommodated in a pallet, for example, at the tip of the sixth axis arm. It has a hand to do. The robot 11 is connected to the robot controller 111 via a connection cable (not shown). The servo motor for each axis is controlled by the robot controller 111.

  The robot controller 111 is communicably connected to the safety device 13. The safety device 13 is configured to be able to acquire various types of information that can specify the operation state of the robot 11 and the control state by the robot controller 111 from the robot controller 111 side. Therefore, the safety device 13 can acquire in real time operation information indicating the operation state of the robot 11 such as the rotation angle of the arm of the robot 11 and the energization state of the motor, and control information indicating the control state of the robot controller 111. . The safety device 13 also stores the coordinates of the robot 11, that is, the installation position of the robot 11, in a two-dimensional coordinate system with the origin as a reference position in the factory, for example, a reference position in the factory.

  The transport vehicle 12 to be monitored is a manned transport vehicle that is driven by a person such as a forklift, an automatic guided vehicle that can automatically travel, and the like. The transport vehicle 12 is connected to the safety device 13 via the communication unit 121 so as to be capable of wireless communication. The communication unit 121 acquires various information such as the traveling speed of the transport vehicle 12 and the current position from the transport vehicle 12, and transmits the various information to the safety device 13. That is, the safety device 13 is configured to be able to acquire various types of information that can specify the traveling state of the transport vehicle 12 and the like from the communication unit 121 side. Therefore, the safety device 13 can acquire information indicating the current position, travel speed, and the like of the transport vehicle 12 in real time.

  HMD20 is comprised in the form with which a user's head can be mounted | worn, and can display various information in a user's visual field. The HMD 20 may be either a binocular type that covers both eyes or a monocular type that covers only one eye. However, the present embodiment is more suitable for a binocular type that easily detracts from the user's field of view. Moreover, although the shape of HMD20 assumes the spectacles type | mold worn like spectacles, the hat type | mold worn like a hat, etc., all may be a shape. The HMD 20 of the present embodiment is assumed to be a glasses type.

  As shown in FIG. 2, the HMD 20 includes a display unit 21 and a camera 22. The display unit 21 is provided at a position overlapping the user's field of view when the user wears the HMD 20. In the case of the present embodiment, the display unit 21 is a portion corresponding to the lens portion of the glasses, and is configured by a so-called transmissive display capable of displaying information such as an image. For this reason, the image displayed on the HMD 20 is displayed so as to overlap the user's field of view. In other words, the user sees the actual scenery viewed with his / her eyes and the virtual image displayed by the HMD 20 together.

  The camera 22 is composed of a small CCD camera or a CMOS camera, and is integrally attached to the HMD 20. The camera 22 is provided on one side of the frame of the HMD 20 so as to match the orientation of the user's face. As illustrated in FIG. 1, the camera 22 captures an image in a direction in which the front of the head of the user 90 is facing with the user 90 wearing the HMD 20 on the head. For this reason, the image captured by the camera 22 has a field angle substantially the same as the field of view of the user 90. In other words, the camera 22 images a landscape that is almost the same as the landscape that the user 90 is viewing.

  The display unit 21 is not limited to a transmissive display, and may be a non-transmissive display. In this case, the HMD 20 displays the image captured by the camera 22 on the display unit 21 in real time, so that the scenery captured by the camera 22 is virtually presented to the user, that is, the user's field of view is reproduced on the display unit 21. It ’s fine. Further, the HMD 20 is not limited to the one having the display unit 21 and may be a retinal projection type that directly projects a virtual image onto the user's retina.

  The HMD 20 is connected to the display control device 30 wirelessly or by wire. The display control device 30 may be configured integrally with the HMD 20. As shown in FIG. 2, the display control device 30 has a built-in control unit 31 constituted by a microcomputer or the like, and transmits image data to be displayed on the display unit 21 of the HMD 20 or is taken by the camera 22. Receive image data. Further, the display control device 30 can perform wired or wireless communication with the safety device 13.

  As shown in FIG. 2, the display control device 30 includes a monitoring target information acquisition unit 32, a visibility information acquisition unit 33, a monitoring target identification unit 34, and a display control unit 35 in addition to the control unit 31. The control unit 31 is mainly configured by a microcomputer having a storage area 312 such as a CPU 311, a ROM, a RAM, and a rewritable flash memory, and controls the entire HDM 20.

  The storage area 312 stores an information display program. The control part 31 implement | achieves the monitoring object information acquisition part 32, the visual field information acquisition part 33, the monitoring object identification part 34, the display control part 35, etc. by software, by running an information display program in CPU311. Note that the monitoring target information acquisition unit 32, the visibility information acquisition unit 33, the monitoring target identification unit 34, and the display control unit 35 may be realized in hardware as an integrated circuit integrated with the control unit 31, for example.

  The monitoring target information acquisition unit 32 can acquire monitoring target information that is information related to the monitoring targets 11 and 12 from the safety device 13 in real time. The monitoring target information regarding the robot 11 includes, for example, operation information indicating the operation state of the robot 11 and control information indicating the control state of the controller 111. The monitoring information related to the transport vehicle 12 includes operation information indicating the operation state of the transport vehicle 12 such as the current position and travel speed of the transport vehicle 12, for example.

  In addition, the monitoring target information acquisition unit 32 can acquire the distance between each monitoring target 11 and the user 90 for each monitoring target 11, 12. The monitoring target information acquisition unit 32 can acquire the distance between each monitoring target 11 and the user 90 based on the position information of the monitoring targets 11 and 12 and the position information of the user 90, for example. The position information of the user 90 can be acquired by providing a small GPS (Global Positioning System) on the HMD 20 attached to the user 90 or the display display device 30 carried by the user 90. In addition, the position information of the user 90 does not directly specify the position as in the GPS unit. For example, the user 90 acquires a movement locus from a reference position such as a factory entrance and obtains a displacement amount with respect to the reference position. It is good also as a structure which specifies a position indirectly based on.

  The visual field information acquisition unit 33 can perform processing for acquiring visual field information for specifying the visual field of the user 90 wearing the HMD 20. The field of view of the user 90 means a landscape that can be seen by the user 90 when the user 90 is wearing the HMD 20. In the case of the present embodiment, the field of view of the user 90 means a landscape that is seen by the user 90 through the display unit 21 that is a lens part of the glasses. The view information acquisition unit 33 acquires view information of the user 90 from, for example, an image captured by the camera 22. In the present embodiment, for example, as shown in FIG. 3 and the like, the imaging range 221 of the camera 22 and the area of the display unit 21 are assumed to be a field of view 91 of the user 90.

  The monitoring target identification unit 34 illustrated in FIG. 2 can perform processing for identifying the monitoring targets 11 and 12 existing in the field of view 91 of the user 90 based on the field of view information acquired by the field of view information acquisition unit 33. The monitoring object identification unit 34 can identify the monitoring objects 11 and 12 as follows, for example. That is, for example, a marker for identifying each individual is attached to each of the monitoring objects 11 and 12. Then, the monitoring target identifying unit 34 can identify each monitoring target 11 and 12 by recognizing the marker attached to the monitoring target 11 and 12 based on the image captured by the camera 22.

  As shown in FIGS. 4 to 7, the display control unit 35 displays the direction presentation display 43 and the monitoring target information 44 in the display unit 21, that is, in the field of view 91 of the user 90 according to the orientation of the user 90 head. It is displayed as it is moved within 91. The direction presentation display 43 and the monitoring target information 44 are composed of character information, numbers, figures, symbols, and the like. The direction presentation display 43 is information indicating that the monitoring target information 44 is displayed in the field of view 91 of the user 90 when the user 90 faces a specific direction. In the case of this embodiment, the direction presentation display 43 includes, for example, characters and symbols “ALERT!” And a frame surrounding the characters and symbols. Further, the display control unit 35 displays an opaque display area 41 in the display unit 21, and displays a direction presentation display 43 and monitoring target information 44 in the display area 41.

  4 and 5, a region 42 surrounded by a two-dot chain line indicates a region that is insufficient in the display region 41 alone in order to display all the contents of the monitoring target information 44. In the following description, a region 42 surrounded by a two-dot chain line in FIGS. 4 and 5 is referred to as a shortage region 42. The deficient area 42 is an area obtained by virtually extending the display area 41 to the outside of the field of view 91 in accordance with the information amount of the monitoring target information 44. For this reason, the shortage area 42 and the monitoring target information 44 represented in the shortage area 42 in FIGS. 4 and 5 are not displayed on the display unit 21. In this case, if the distance between the user 90 and the monitoring target 12 is constant, the total area of the display area 41 and the shortage area 42 is also constant.

  The display control unit 35 covers and hides the actual scene behind the display area 41 by, for example, displaying the inside of the display area 41 opaquely with a color opposite to the monitoring target information 44. Thereby, since the direction presentation display 43 and the monitoring target information 44 displayed in the display area 41 can be prevented from being mixed into the actual scene behind the display area 41, the direction presentation display 43 and the monitoring target information 44 are easy to see. Become. Note that the display control unit 35 does not necessarily display the frame indicating the display region 41 and the display region 41 itself on the display unit 21.

  For example, as shown in FIG. 4, the display control unit 35 captures the carrier 12 that is a monitoring target in the field of view 91 of the user 90 and the monitoring target 12 captured in the field of view 91. When the monitoring target information is acquired, first, the direction presentation display 43 is displayed at the corner in the field of view 91 of the user 90, in this case, at the top. In this case, the direction presentation display 43 displayed in the upper part of the field of view 91 indicates that the monitoring target information 44 is displayed in the field of view 91 of the user 90 when the user 90 faces a specific direction, that is, the upper part. . Further, in this case, the display control unit 35 displays the direction presentation display 43 at a position that does not overlap the monitoring target in this case, that is, the transport vehicle 12 in the field of view 91 of the user 90.

  Then, as shown in FIGS. 5 and 6, the display control unit 35 follows the direction in which the direction presentation display 43 is displayed so that the user 90 faces the direction presentation display 43 and the monitoring target information 44. Is displayed in the field of view 91 of the user 90. That is, as shown in FIGS. 5 and 6, the display control unit 35 moves the direction presentation display 43 and the monitoring target information 44 relatively downward in the field of view 91 as the user 90 faces upward. In this way, the direction presentation display 43 and the monitoring target information 44 are displayed. In this way, the display method for displaying the direction presentation display 43 and the monitoring target information 44 so as to follow the direction of the user 90 is referred to as follow-up display in the following description.

  Incidentally, the display control unit 35 can determine the direction in which the user 90 is facing by performing image processing on the field-of-view information acquired by the field-of-view information acquisition unit 33, that is, an image captured by the camera 22. Further, the display control unit 35 may determine the direction in which the user 90 is facing based on the detection result of an acceleration sensor (not shown) provided in the HMD 20. As shown in FIGS. 6 and 7, as the distance from the user 90 to the monitoring target, for example, the transport vehicle 12 approaches, the display control unit 35 at least one of the direction presentation display 43 and the monitoring target information 44, in this case, both Is displayed larger.

  Next, a control flow performed in the control unit 31 of the display control device 30 will be described with reference to FIG. When executing the information display program, the control unit 31 executes the control flow of FIG. First, in step S11, the control unit 31 determines whether or not the monitoring target is captured in the field of view 91 by the processing of the visual field information acquisition unit 33 and the monitoring target identification unit 34, that is, whether or not the user 90 is watching the monitoring target. Judging. When the monitoring target is not captured in the field of view 91 (NO in step S11), the control unit 31 repeats step S11 until the monitoring target is captured in the field of view 91.

  When the monitoring target is caught in the field of view 91 (YES in step S11), the control unit 31 shifts the process to step S12. In step S <b> 12, the control unit 31 determines whether or not the monitoring target information about the monitoring target existing in the field of view 91 has been acquired. For example, in the example of FIG. 3, the user 90 captures the transport vehicle 12 in his field of view 91. In this case, the control unit 31 determines whether or not the monitoring target information regarding the transport vehicle 12 in the field of view 91 is acquired by the processing of the monitoring target information acquisition unit 32.

  When the monitoring target information regarding the transport vehicle 12 has not been acquired (NO in step S12 in FIG. 8), the control unit 31 determines that there is no monitoring target information to be presented to the user 90, and step S11. Return processing to. On the other hand, when the monitoring target information related to the transport vehicle 12 is acquired (YES in step S12), the control unit 31 first performs processing at the corner in the field of view 91 as shown in FIG. In the case, a direction presentation display 43 is displayed at the top.

  Thereafter, the control unit 31 shifts the process to step S14, and displays the direction presentation display 43 and the monitoring target information 44 related to the transport vehicle 12 following the display by the process of the display control unit 35 as shown in FIGS. . Further, as illustrated in FIG. 7, the control unit 31 displays the direction presentation display 43 and the monitoring target information 44 in a larger size as the distance between the monitoring target 12 and the user 90 becomes closer by the processing of the display control unit 35.

  Then, the control unit 31 repeats steps S11 to S14 of FIG. 8 until the monitoring target 12 is removed from the view 91 or until the monitoring target information 44 regarding the monitoring target 12 captured in the view 91 is no longer obtained. The direction presentation display 43 and the monitoring target information 44 are displayed following the view 91. The case where the monitoring target information 44 is not acquired is, for example, when the monitoring target 12 is powered off and the operation is stopped, that is, when there is no danger even if the monitoring target 12 is approached.

  According to the embodiment described above, in the information display system 10, when the display control unit 35 captures the monitoring target, for example, the transport vehicle 12 in the field of view 91 of the user 90, first, the direction presentation display 43 is displayed on the user 90. Display in the field of view 91. The direction presentation display 43 is a display for presenting the user 90 so as to face a specific direction, and the monitoring target information 44 is displayed in the field of view 91 of the user 90 when the user 90 faces the specific direction. Is shown. Then, when the user 90 faces the direction presented by the direction presentation display 43, the display control unit 35 displays the monitoring target information 44 in the field of view 91 of the user 90 following the change in the direction of the user 90.

  According to this, by displaying the direction presentation display 43 in the field of view 91 of the user 90, it is possible to prompt the user 90 to face the direction in which the direction presentation display 43 presents. As a result, the line of sight of the user 90 can be diverted from the monitoring target, in this case, the transport vehicle 12. That is, according to this, the monitoring target 12 captured in the field of view 91 of the user 90 can be driven to the corner of the field of view 91 of the user 90. Therefore, it becomes easy to secure the display area 41 for displaying the monitoring target information 44 without overlapping the monitoring target 12 in the field of view 91 of the user 90. Therefore, it can suppress that the monitoring object 12 and the monitoring object information 44 overlap, and the visual field 91 of the user 90 is interrupted, As a result, safe information presentation becomes possible.

  Further, according to the present embodiment, even when the direction presentation display 43 is displayed in the field of view 91 of the user 90, if the user 90 does not go in the direction indicated by the direction presentation display 43, the user 90's The monitoring target information 44 is not displayed in the field of view 91. Therefore, when the user 90 is not willing to look at the monitoring target information 44, the user 90 can not display the monitoring target information 44 in the field of view 91 by not turning around in the direction indicated by the direction presentation display 43. Thereby, even if the user 90 is a case where the direction presentation display 43 is displayed, he can display the monitoring object information 44 by his intention. Therefore, even when the user 90 is not willing to look at the monitoring target information 44, it is possible to avoid that the monitoring target information 44 is displayed in the field of view 91 and the field of view 91 is obstructed.

  Furthermore, according to the present embodiment, for example, when the user 90 is walking and is approaching the monitoring target 12, the direction presentation display 43 is displayed in the field of view 91 of the user 90. It can be urged to turn in the direction indicated by the direction presentation display 43. As a result, the user 90 whose direction of travel is difficult to see by deliberately moving the line of sight of the user 90 from the front of the user 90, that is, from the direction of travel of the user 90, is more likely to stop once feeling danger. Then, the monitoring target information 44 is displayed in the field of view 91 of the user 90 by following the direction indicated by the direction presentation display 43 by the user 90, and the movement of the user 90 is stopped and the user 90 is stopped. The monitoring target information 44 can be appropriately presented. Thereby, when the user 90 is moving, etc., it is possible to prevent the monitoring object 12 from being excessively approached, and as a result, it is possible to present safe information.

  In the present embodiment, the display control unit 35 displays the direction presentation display 43 on the upper part in the field of view 91 of the user 90 when the monitoring target 12 is captured in the field of view 91 of the user 90. According to this, it is possible to prompt the user 90 to look upward. In this case, since it is difficult for the user 90 to see his / her feet, the possibility that the user 90 feels more dangerous and stops is increased. That is, when the user 90 looks upward according to the direction presentation display 43, the user has a posture in which the body warps slightly backward, that is, a posture in which the user moves. Such a posture is not suitable for walking because the center of gravity of the body is located slightly rearward. For this reason, for example, the user 90 who walks can be stopped more effectively and an unreasonable walk can be suppressed, As a result, safer information presentation becomes possible.

  In the present embodiment, the display control unit 35 displays the opaque display area 41 in the field of view 91 of the user 90, and displays the direction presentation display 43 and the monitoring target information 44 in the display area 41. According to this, it is possible to prevent the direction presentation display 43 and the monitoring target information 44 displayed in the opaque display area 41 from being mixed into the actual scene behind the display area 41. Thereby, it is possible to make the direction presentation display 43 and the monitoring target information easier to see.

  In the present embodiment, the display control unit 35 displays the monitoring target information 44 at a position that does not overlap the monitoring target, for example, the transport vehicle 12. According to this, it is possible to prevent the monitoring target information 44 displayed in the field of view 91 of the user 90 from overlapping the monitoring target 12 and prevent the monitoring target information 44 from being difficult to see, and also prevent the monitoring target 12 itself from becoming difficult. it can. That is, according to this, the user 90 can appropriately view the monitoring target information 44 while keeping the monitoring target 12 in the field of view 91. As a result, safer information can be presented.

  In the present embodiment, the display control unit 35 displays the direction presentation display 43 larger as the distance from the user 90 to the monitoring target 12 approaches. According to this, as the user 90 gets closer to the monitoring target 12, the direction presentation display 43 becomes larger and a feeling of pressure can be given to the user 90. Therefore, it becomes easier for the user 90 to stop.

  Here, even if the user 90 is looking up to see the monitoring target information 44, not all the users 90 are necessarily stopped. That is, it is also conceivable that the user 90 walks up while looking up at the monitoring target information 44. On the other hand, in the present embodiment, the display control unit 35 displays the monitoring target information 44 larger as the distance from the user 90 to the monitoring target 12 approaches. According to this, even when the user 90 looks up and walks while looking at the monitoring target information 44, the monitoring target information 44 becomes larger as the user 90 approaches the monitoring target 12, and the user 90 becomes larger. Can give a feeling of pressure. Therefore, a situation where the user 90 walks while watching the monitoring target information 44 can be suppressed. As a result, safer information can be presented.

(Second Embodiment)
Next, a second embodiment will be described with reference to FIGS.
The second embodiment is different from the first embodiment in the specific mode of direction presentation display. That is, in this embodiment, when the display control unit 35 captures the monitoring target, for example, the transport vehicle 12 in the field of view 91 of the user 90, the display control unit 35 changes to the direction presentation display 43 of the first embodiment as shown in FIG. The direction presentation display 45 is displayed.

  The direction presentation display 45 of the present embodiment is configured by a translucent arrow graphic, in this case, an upward arrow graphic, and is displayed at a position overlapping the monitoring target 12. Then, when the user 90 faces the direction presented in the direction presentation display 45, in this case, the upward direction, the display control unit 35 follows the direction of the user 90 as shown in FIGS. The direction presentation display 45 and the monitoring target information 44 are displayed so as to move relatively downward in the field of view 91 of the user 90.

  According to this, since the direction presentation display 45 is displayed as an arrow figure at the monitoring target 12 that the user 90 is looking at, that is, the point of view of the user 90, the user 90 can easily recognize which direction to turn. Become. Moreover, since the arrow figure which comprises the direction presentation display 45 is translucent, even if it overlaps with the monitoring object 12, it is hard to disturb the visual field 91 of the user 90.

  In this case, since the direction presentation display 45 is displayed as an arrow at a position overlapping the monitoring target 12, the user 90 has the information displayed at the tip of the arrow of the direction presentation display 45 overlap with the direction presentation display 45. It can be easily recognized that it is related to the monitored object 12. That is, when a general user 90 sees an arrow that overlaps the monitoring target 12, it seems that the user is associated with information related to the monitoring target 12 at the tip of the arrow. Therefore, when the user captures a plurality of monitoring targets in the field of view 91, the user can easily grasp which monitoring target information 44 shown in the tip of the direction presentation display 45 is for which monitoring target in the field of view. be able to. As a result, since the user 90 can see the monitoring target 12 and the monitoring target information 44 in association with each other, it becomes easy to understand the monitoring target information 44.

In addition, embodiment of this invention is not limited to the aspect described above and the aspect described in drawing, A various deformation | transformation and expansion | extension can be made in the range which does not deviate from the summary.
For example, the control unit 31, the monitoring target information acquisition unit 32, the visibility information acquisition unit 33, the monitoring target identification unit 34, and the display control unit 35 may be provided separately on the safety device 13 side or the HMD 20 side.
In addition, the direction presentation displays 43 and 45 are not limited to those for directing the user 90 upward, but may be those for directing left or right or downward.

  In the drawings, 10 is an information display system, 11 is a robot (monitoring target), 12 is a transport vehicle (monitoring target), 20 is a head mounted display (wearable display), 32 is a monitoring target information acquisition unit, and 33 is visibility information acquisition. , 34 is a monitoring target identification unit, 35 is a display control unit, 43 is direction presentation display, 44 is monitoring target information, and 45 is direction presentation display.

Claims (6)

A wearable display that can be worn by the user and can display information within the user's field of view;
A monitoring target information acquisition unit capable of acquiring monitoring target information that is information related to the monitoring target;
A view information acquisition unit for acquiring view information for identifying the user's view;
A monitoring target identifying unit for identifying a monitoring target existing in the user's field of view based on the field of view information acquired by the field of view information acquiring unit;
When the monitoring target is captured in the user's field of view, the user is directed in a specific direction so that the monitoring target information is displayed in the user's field of view. A display control unit that displays the monitoring target information in the user's field of view in accordance with the user pointing in the direction indicated by the direction presentation display;
An information display system comprising: The display control unit displays the direction presentation display on the upper part in the user's field of view when the monitoring target is captured in the user's field of view.
The information display system according to claim 1. The display control unit displays the direction presentation display as a semi-transparent arrow graphic at a position overlapping the monitoring target when the monitoring target is captured in the user's field of view.
The information display system according to claim 1. The display control unit displays an opaque display area in the user's field of view and displays the monitoring target information in the display area.
The information display system according to any one of claims 1 to 3. The display control unit displays the monitoring target information at a position that does not overlap the monitoring target.
The information display system according to any one of claims 1 to 4. The display control unit displays at least one of the direction presentation display and the monitoring target information as the distance from the user to the monitoring target approaches.
The information display system according to any one of claims 1 to 5.

Images