Surveying system, surveying method, and surveying program

Abstract

To provide a surveying system that can be operated by one person and is simple to operate.SOLUTION: A surveying system includes: virtual space defining means 31 for defining a virtual space; virtual space information providing means 32 for providing information on the virtual space to a head-mounted display device 10 which allows a user U to visually recognize the virtual space in a state of being overlapped with a real space; a surveying tool 20 having an abutting section 21 for abutting on a portion to be surveyed; tool position acquisition means 34 for acquiring position information of the surveying tool 20; coordinate information acquisition means 36 for acquiring coordinate information on the portion to be surveyed on the basis of the position information acquired by the tool position acquisition means 34 when predetermined operation is performed in a state where the abutting section 21 abuts on the portion to be surveyed; and object generation means 37 for generating a predetermined object at a portion corresponding to the portion to be surveyed in the virtual space on the basis of the coordinate information acquired by the coordinate information acquisition means 36.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] The present invention relates to a surveying system. The present invention also relates to a surveying method using this surveying system and a surveying program capable of realizing this surveying system.

Background Art

[0002] Surveying is an extremely important technology that forms the basis of construction work and transactions. There are various types of surveying, and one of them is the current situation surveying for surveying existing structures (buildings, fences, utility poles, roads, railway lines, etc.) and terrain. Conventional current situation surveying has been usually carried out by two or more people using a total station and a surveying pole with a surveying prism attached. That is, one operator stands and holds the surveying pole substantially vertically on the surveyed location that is the surveying target, and the other operator operates the total station to irradiate the surveying prism with laser light to obtain the position information of the surveying prism. However, in such a method, since it is always necessary to perform the work with two or more people, there is a problem that labor costs increase.

[0003] In view of such a situation, in FIG. 1 of Patent Document 1 and the like, it is described that an observation device 4 (such as a total station) is controlled using a surveying terminal device 1 that can be operated at the hand of an operator U. The operator U can execute the observation by the observation device 4 by holding the target 3 with the surveying prism attached and pressing the play button of the earphone 2 with a remote control function connected to the earphone jack of the surveying terminal device 1. The observed surveying points are displayed on the CAD drawing displayed on the display screen 151 of the surveying terminal device 1 as described in FIG. 4 of the same document and the like. Thereby, it is said that even only one operator U can easily perform surveying.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

[0005] However, the method described in Patent Document 1 had the problem that, after the surveying of one survey point was completed, it was necessary to compare the CAD drawing displayed on the display screen 151 of the survey terminal device 1 with the survey area to find the next point to be surveyed, which was cumbersome. In particular, in the method of the said document, as shown in Figure 1 of the said document, the worker U performs the survey with both hands occupied by the target 3 and the earphone 2, so when he wanted to check the CAD drawing, he had to release his hands from the target 3 or earphone 2 and pick up the survey terminal device 1, and when he found the next survey point, he had to release his hands from the survey terminal device 1 again and pick up the target 3 or earphone 2 again, which was very cumbersome.

[0006] This invention was made to solve the above problems and provides a surveying system that allows one person to perform surveying work and has a simple operation. Another objective of this invention is to provide a surveying method using this surveying system. Furthermore, another objective of this invention is to provide a surveying program that can realize this surveying system. [Means for solving the problem]

[0007] The above issues are, A surveying system for surveying the area to be surveyed, A means for defining a virtual space corresponding to real space, A head-mounted display device that allows the user to view the virtual space superimposed on the real space, comprising a virtual space information providing means capable of providing information about the virtual space, A surveying tool having a contact portion for contacting the area to be measured, A tool position acquisition means that can acquire the position information of a surveying tool, A coordinate information acquisition means that, when a predetermined operation is performed with the contact portion of the surveying tool in contact with the area to be surveyed, can acquire coordinate information of the area to be surveyed based on the position information acquired by the tool position acquisition means, Based on the coordinate information acquired by the coordinate information acquisition means, an object generation means can generate a predetermined object at a location corresponding to the measurement location in the virtual space. A surveying system equipped with This is solved by providing [a solution].

[0008] This surveying system, Electronic computing device, A means for defining a virtual space corresponding to real space, A head-mounted display device that allows the user to view the virtual space superimposed on the real space, comprising a virtual space information providing means capable of providing information about the virtual space, A tool position acquisition means capable of acquiring positional information of a surveying tool having a contact portion for contacting the area to be measured, A coordinate information acquisition means that, when a predetermined operation is performed with the contact portion of the surveying tool in contact with the area to be surveyed, can acquire coordinate information of the area to be surveyed based on the position information acquired by the tool position acquisition means, An object generation means that can generate a predetermined object at a location corresponding to the measurement location in the virtual space based on the coordinate information acquired by the coordinate information acquisition means, A surveying program that can function as such. This can be achieved by [method].

[0009] Here, "the real space" in the context of "allowing the user to view a virtual space superimposed on real space" may refer to the real space directly viewed by the user, or it may refer to an image of the real space captured by a camera or the like. Furthermore, in this specification, "head" refers to the part of the user's body above the neck. Therefore, the "head-mounted display device" is not limited to any specific location above the user's neck, as long as it can be attached to any part of the body above the neck. The "head-mounted display device" may be attached by being placed over the head, as shown in Figure 1 below, or it may be attached by hooking it onto the ears like eyeglasses.

[0010] The procedure for performing a survey using the above-described surveying system is as follows: First, the user wears a head-mounted display device to allow them to view the virtual space superimposed on the real space. Next, with the contact part of the surveying tool in contact with the area to be surveyed, the user performs a predetermined operation. As a result, the coordinate information of the area to be surveyed is acquired, and a predetermined object is generated at the location in the virtual space corresponding to the area to be surveyed. This allows the user to see as if they have marked (drawn) the completed survey location in the real space, and to intuitively distinguish between areas that have been surveyed and areas that have not yet been surveyed. Therefore, after the surveying of one area is completed, the surveying of the next area can be started smoothly. In this way, the surveying system of the present invention allows one person to perform the surveying work and is easy to operate.

[0011] In the surveying system described above, the tool position acquisition means is not particularly limited in its specific method of acquiring position. In some embodiments of the surveying system, the system further includes a display device position acquisition means that can acquire position information of a head-mounted display device based on information obtained by an optical method using a reflective member attached to a head-mounted display device and a total station, and a relative position acquisition means that can acquire relative position information of a surveying tool with respect to the head-mounted display device. The tool position acquisition means can acquire position information of a surveying tool based on the position information of the head-mounted display device acquired by the display device position acquisition means and the relative position information acquired by the relative position acquisition means. This allows for the acquisition of position information of the surveying tool with high accuracy, and simplifies the configuration of the surveying tool, making it lightweight and compact.

[0012] In this case, the display device position acquisition means can be further made switchable between a TS mode, which acquires the position information of a head-mounted display device based on information obtained by an optical method using a reflective member and a total station, and a GNSS mode, which acquires the position information of a head-mounted display device based on information obtained by RTK (Real Time Kinematic) positioning using GNSS (Global Navigation Satellite System) signals. This allows, for example, in urban areas where it is easy to install a total station and high surveying accuracy is required, the TS mode can be used to acquire the position information of the head-mounted display device and surveying tools with high accuracy (i.e., perform surveying with high accuracy), and in mountainous areas where it is difficult to install a total station and high surveying accuracy is not required, the GNSS mode can be used to perform surveying without installing a total station.

[0013] In some embodiments of the surveying system, a connection line generation means can be further provided that, based on user operations, generates connection lines connecting one object to another within the virtual space. This makes the relationships between multiple objects easier to understand. It also makes it easier to record the relationships between multiple surveyed locations.

[0014] Incidentally, among the areas to be surveyed in current condition surveys, there are sometimes areas where it is difficult to bring the contact part of the surveying tool into contact with the surface, such as the roof of a neighboring house. For this reason, in some embodiments of the surveying system, a tool posture acquisition means is further provided that can acquire posture information of the surveying tool (information on orientation, inclination, etc.), and the surveying tool is equipped with an optical distance measuring means having a laser beam emission part and a laser beam incidence part, so that the coordinate information acquisition means can also acquire the coordinates of the area to be surveyed based on the position information acquired by the tool position acquisition means, the posture information acquired by the tool posture acquisition means, and the distance information obtained by the optical distance measuring means. This makes it possible to survey areas where it is difficult to bring the contact part into contact with the surface, as will be explained in detail later.

[0015] In some embodiments of the surveying system, the tool position acquisition means can acquire the position information of the surveying tool based on information obtained by an optical method using a reflective member attached to the surveying tool and a total station. This allows for the acquisition of the position information of the surveying tool with high accuracy, thereby improving surveying accuracy. Furthermore, as will be described later, the configuration of the head-mounted display device can be simplified. [Effects of the Invention]

[0016] As described above, according to the present invention, it becomes possible to provide a surveying system that can perform surveying work alone and has a simple operation. Further, it also becomes possible to provide a surveying method using this surveying system. Furthermore, it also becomes possible to provide a surveying program that can implement this surveying system.

Brief Description of the Drawings

[0017] [Figure 1] It is a diagram showing a state of using the surveying system of the present embodiment. [Figure 2] It is a block diagram showing an example of the network environment of the surveying system. [Figure 3] It is a diagram showing an example of the user's field of view, and shows a state of performing surveying of the surveyed point P1. [Figure 4] It is a diagram showing an example of the user's field of view, and shows a state of displaying the connecting line L12 connecting the surveyed point P1 and the surveyed point P2. [Figure 5] It is a front view of a surveying tool in another embodiment.

Modes for Carrying Out the Invention

[0018] A preferred embodiment of the present invention will be described more specifically with reference to the drawings. However, the technical scope of the present invention is not limited to the embodiments described below.

[0019] 1. Overview FIG. 1 is a diagram showing a state of using the surveying system of the present embodiment. FIG. 2 is a block diagram showing an example of the network environment of the surveying system. As shown in FIG. 1, the surveying system of the present embodiment includes a head-mounted display device 10, a surveying tool 20, and a control unit 30, and is used together with a total station T.

[0020] The head-mounted display device 10 is designed to be worn on the head of user U, as shown in the enlarged view of Figure 1. The head-mounted display device 10 includes a display unit 11 for allowing user U to view a virtual space (described later), a reflective member 12 for reflecting laser light emitted from the total station T, a reflective member support unit 13 for supporting the reflective member 12, and an RTK-GNSS antenna (not shown). The head-mounted display device 10 also includes a posture detection means 14 that can detect the posture (direction, tilt, rotation, etc.) of the head-mounted display device 10, as shown in Figure 2.

[0021] The tip of the surveying tool 20 is provided with a contact portion 21 for contacting the area to be measured. The base end of the surveying tool 20 is provided with an optical distance measuring means 22 having a laser beam emission portion 22a that can emit laser light and a laser beam incidence portion 22a that can receive laser light.

[0022] The control unit 30 is typically implemented by an electronic computer. As shown in Figure 2, the control unit 30 includes a virtual space definition means 31, a virtual space information provision means 32, a display device position acquisition means 33, a tool position acquisition means 34, a tool posture acquisition means 35, a coordinate information acquisition means 36, an object generation means 37, a coupling line generation means 38, and a storage means 39. The head-mounted display device 10 and the surveying tool 20, the head-mounted display device 10 and the control unit 30, the head-mounted display device 10 and the total station T, the surveying tool 20 and the control unit 30, and the total station T and the control unit 30 are connected in a state where data communication is possible (whether wireless or wired, and whether directly or indirectly connected).

[0023] The virtual space definition means 31 of the control unit 30 can define a virtual space corresponding to the real space. By wearing the head-mounted display device 10, user U can view this virtual space overlapping with the real space (in a state where the virtual space and the real space are superimposed three-dimensionally). The position information of the head-mounted display device 10 is acquired in real time by an optical method using a reflective member 12 attached to the head-mounted display device 10 and a total station T, and the posture information of the head-mounted display device 10 (direction, tilt, etc.) is detected in real time by a posture detection means 14 provided on the head-mounted display device 10. As a result, when user U moves or rotates or tilts their head, the appearance of the virtual space changes according to that movement. Therefore, user U can get the feeling that they are in a space where the virtual space and the real space are fused together.

[0024] 2.Surveying method The following describes the procedure for performing a survey using this surveying system. The surveying system of this embodiment can perform both contact surveys using the contact portion 21 (Figure 1) of the surveying tool 20 and non-contact surveys using the optical distance measuring means 22 of the surveying tool 20.

[0025] 2.1 Contact surveying Contact surveying is a method of surveying in which the contact portion 21 of the surveying tool 20 is brought into contact with the area to be surveyed. The procedure for contact surveying will be explained below using the example of surveying the points (areas to be surveyed) P1, P2, and P3 shown in Figure 1. Figure 3 is a diagram showing an example of user U's field of view, illustrating the process of surveying point P1. Figure 3(a) shows the state before surveying point P1, Figure 3(b) shows the state during surveying point P1, and Figure 3(c) shows the state after the surveying of point P1 has been completed. Figure 4 is a diagram showing an example of user U's field of view, illustrating the connecting line L that connects point P1 and point P2. 12 This figure shows how to display it. Figure 4(a) shows the connecting line L 12 Figure 4(b) shows the state before displaying the connection line L12 The images show the state after each display has been changed. In Figure 3, for illustrative purposes, the hands and arms of user U, who is holding the surveying tool 20, are omitted from the image.

[0026] User U first sets up the total station T. Next, the user puts on the head-mounted display device 10 so that the virtual space and the real space can be superimposed and viewed, as shown in Figure 3(a). Then, as shown in Figure 3(b), with the contact part 21 of the surveying tool 20 in contact with the point to be surveyed P1, the user performs a predetermined operation to instruct the acquisition of the coordinates of the point to be surveyed P1 (hereinafter sometimes referred to as the "coordinate acquisition operation"). As a result, the coordinate information of the point to be surveyed P1 is acquired based on the position information of the surveying tool 20 (explained in detail later), and as shown in Figure 3(c), object O1 is displayed in the virtual space at the location corresponding to (overlapping with) the point to be surveyed P1. This allows user U to intuitively understand that the point to be surveyed P1 has already been surveyed. Furthermore, if the measurement is mistakenly taken at a location different from the measurement point P1, object O1 will be displayed at the location where the measurement was taken, allowing the user to immediately recognize the measurement error and correct the measurement.

[0027] If the surveying of points P2 and P3 is carried out successively using the same procedure, multiple objects O1, O2, and O3 will be displayed in the virtual space, as shown in Figure 4(a). However, if multiple objects O1, O2, and O3 are displayed independently, it may be difficult to understand the relationships between objects O1, O2, and O3. In this embodiment, by having user U perform a predetermined operation (hereinafter referred to as "connection line display operation"), a connection line L connecting one object O1 and another object O2 will be displayed, as shown in Figure 4(b). 12 This allows the objects to be displayed within the virtual space. This makes it easy to see, for example, that the measured point P1 corresponding to object O1 and the measured point P2 corresponding to object O2 are adjacent measured points in the same structure in real space.

[0028] The coordinate information of the points to be measured and the connection line information related to the connection lines obtained through the above procedure are stored in the storage means 39 of the control unit 30. The control unit 30 may also be equipped with drawing output means (not shown) for outputting drawing data (e.g., 3D CAD data or 2D CAD data, etc.) based on this coordinate information and connection line information. This makes it possible to easily create drawing data.

[0029] Thus, using the surveying system of this embodiment, surveying work can be performed by a single person, and highly accurate surveying can be achieved with simple operation.

[0030] In contact surveying, high-precision surveying can be performed by properly bringing the contact part 21 into contact with the area to be measured. In other words, if surveying is performed when the contact part 21 is not in contact with the area to be measured, it may be difficult to improve the accuracy of the survey. Therefore, the contact part 21 can be provided with a contact detection means that can detect whether or not the contact part 21 is in contact with the area to be measured. This allows, for example, to prevent surveying from being performed when the contact part 21 is not in contact with the area to be measured, or to issue a warning to the user U. Thus, it is possible to improve the accuracy of the survey. Examples of contact detection means that can be used include a contact switch, a contact sensor, or an optical sensor.

[0031] The coordinate acquisition operation for obtaining the coordinates of the area to be measured is not particularly limited in its specific method. The coordinate acquisition operation can be performed, for example, by voice input, eye-tracking input, or input via an input device (for example, input via buttons or touch panels provided on the surveying tool 20 or the head-mounted display device 10). For example, if a contact switch is provided on the contact part 21 as the contact detection means described above, the coordinate acquisition operation described above may be performed by pressing the contact switch (i.e., pressing the contact part 21 against the area to be measured).

[0032] The timing for displaying connecting lines is not limited. For example, it can be performed when the surveying of one point P1 is complete and the surveying of another point P2 is about to begin, while the surveying of another point P2 is in progress, or after the surveying of another point P2 is complete. The specific method of performing the connecting line display operation is also not limited and can be done by voice input, eye-tracking input, or input via an input device. The input method for coordinate acquisition and the input method for connecting line display may be the same or different.

[0033] The object's specific form (shape, color, pattern, etc.; the same applies hereinafter) is not limited. When multiple objects are generated (displayed), they may have substantially the same form or different forms from one another. The form of an object may be determined by the properties of the corresponding surveyed area, etc. In this embodiment, objects O1, O2, and O3 are substantially spherical. The form of the connecting line is also not particularly limited. The connecting line may be substantially straight or curved, determined based on the operation of user U. Furthermore, the line type of the connecting line is not limited. The connecting line may be a continuous line (solid line) or an intermittent line (for example, a dotted line, dashed line, or dashed line), and the line type may be determined based on the operation of user U.

[0034] 2.2 Non-contact surveying Non-contact surveying is a method of surveying using the optical distance measuring means 22 of the surveying tool 20 (enlarged view of Figure 1). This method is particularly useful when it is difficult to bring the contact part 21 of the surveying tool 20 into contact with the area to be surveyed, such as the eaves of a neighbor's roof.

[0035] The procedure for non-contact measurement is as follows: First, user U sets up the total station T and attaches the head-mounted display device 10, similar to contact measurement. Next, the user acquires distance information to the location to be measured using the optical distance measuring means 22 of the surveying tool 20. That is, the laser beam emitter 22a is pointed towards the location to be measured, and laser light is emitted from the laser beam emitter 22a and irradiated onto the location to be measured. A portion of the irradiated laser light is reflected at the location to be measured and incident on the laser beam incident part 22a. Based on the information of the emitted laser light and the information of the incident laser light, distance information to the location to be measured is acquired. Once the distance information is acquired, the coordinate information of the location to be measured is acquired based on the distance information and the position information and posture information (explained in detail later) of the surveying tool 20, and a predetermined object is displayed at the location corresponding to the location to be measured in the virtual space, similar to contact measurement. Other procedures can be the same as those for contact measurement. Thus, using the surveying system of this embodiment, surveying can be performed with simple operation even in locations where it is difficult to bring the contact portion 21 into contact with the surface.

[0036] 3. Head-mounted display device The head-mounted display device 10 (Figure 1) is a device that allows the user U to view a virtual space defined by the virtual space definition means 31 in a state where it overlaps with the real space, via the display unit 11.

[0037] The display unit 11 is not limited in its specific configuration as long as it can allow the user U to view the virtual space superimposed on the real space. In this case, "real space" may be actual physical space or an image obtained by photographing the real space. The display unit 11 may be, for example, a display (image display device) or a hologram forming device. In this embodiment, a transparent display is used as the display unit 11, and by displaying a predetermined image on this transparent display, the user U can view the virtual space superimposed on the real space visible through the transparent display.

[0038] Typically, a surveying prism is used as the reflective member 12. Among these, a 360° prism is preferred. The mounting location and method of the reflective member 12 are not particularly limited, as long as it is directly or indirectly attached to the head-mounted display device 10 without changing its relative position to the head-mounted display device 10. In this embodiment, as shown in the enlarged view of Figure 1, the reflective member 12 is supported by a rigid, belt-shaped reflective member support 13 attached to the head-mounted display device 10, so that the reflective member 12 is positioned near the top of the user U's head. The reflective member support 13 may, for example, be helmet-shaped.

[0039] The posture detection means 14 is a means that can detect the posture (direction, tilt, rotation, etc.) of the head-mounted display device 10 in real time. The posture detection means 14 may include, for example, direction detection means such as an electronic compass, tilt detection means such as an acceleration sensor, and rotation speed detection means such as a gyro sensor.

[0040] 4. Surveying Tools In this embodiment, the surveying tool 20 is pen-shaped, as shown in Figure 1, but the shape of the surveying tool 20 is not particularly limited. Also, in this embodiment, the optical distance measuring means 22 is provided on the base end side of the surveying tool 20, but the location of the optical distance measuring means 22 is not particularly limited and may be, for example, on the tip side of the surveying tool 20.

[0041] 5. Control Unit The virtual space definition means 31 is a means for defining a virtual space corresponding to real space. The virtual space definition means 31 can define a virtual camera placed in the virtual space. The position and orientation (direction, tilt, etc.) of this virtual camera can be adjusted based on the position information of the head-mounted display device 10 acquired by the display device position acquisition means 33 (described later) and the orientation information obtained by the orientation detection means 14 of the head-mounted display device 10.

[0042] The virtual space information providing means 32 is a means for providing the head-mounted display device 10 with information about the virtual space defined by the virtual space definition means 31. The specific type of information about the virtual space provided by the virtual space information providing means 32 is not particularly limited. For example, the virtual space information providing means 32 can provide the head-mounted display device 10 with information about images captured by the virtual camera mentioned above.

[0043] The display device position acquisition means 33 (Figure 2) is a means for acquiring the position information of the head-mounted display device 10 in real time. The method by which the display device position acquisition means 33 obtains the position information of the head-mounted display device 10 is not limited. In this embodiment, the display device position acquisition means 33 acquires the position information of the head-mounted display device 10 based on information obtained by an optical method using a reflective member 12 attached to the head-mounted display device 10 and a total station T. This makes it possible to obtain the position information of the head-mounted display device 10 with high accuracy.

[0044] Incidentally, when conducting surveys in mountainous areas, for example, it can be difficult to install a total station T. Therefore, in the surveying system of this embodiment, an RTK-GNSS antenna (not shown) is provided on the head-mounted display device 10, and the display device position acquisition means 33 can switch between a TS mode, which acquires the position information of the head-mounted display device 10 based on information obtained by an optical method using a reflective member 12 (Figure 1) and a total station T, and a GNSS mode, which acquires the position information of the head-mounted display device 10 based on information obtained by RTK positioning using GNSS signals obtained from artificial satellites S. In mountainous areas, by using the GNSS mode, surveys can be conducted without installing a total station T.

[0045] The tool position acquisition means 34 is a means for acquiring position information of the surveying tool 20. The method by which the tool position acquisition means 34 acquires position information is not particularly limited. The tool position acquisition means 34 may acquire position information independently of the display device position acquisition means 33. However, in this case, the system may become more complex and costly. For this reason, in this embodiment, a relative position acquisition means 34a is further provided that can acquire relative position information of the surveying tool 20 with respect to the head-mounted display device 10, and the tool position acquisition means 34 is configured to acquire position information of the surveying tool 20 based on the position information of the head-mounted display device 10 acquired by the display device position acquisition means 33 and the relative position information acquired by the relative position acquisition means 34a. The relative position acquisition means 34a is not limited in its specific method of acquiring relative position information. In this embodiment, the relative position acquisition means 34a can acquire relative position information of the surveying tool 20 based on information obtained using a camera (not shown) or a sensor (not shown) or both provided on the head-mounted display device 10. In this case, the surveying tool 20 may be equipped with markers (not shown) to facilitate the acquisition of positional information by cameras and sensors. Markers are usually provided in multiple locations.

[0046] The tool position acquisition means 34 is not particularly limited in which part of the surveying tool 20 its position information is acquired. For example, the tool position acquisition means 34 can acquire position information of the contact portion 21 of the surveying tool 20. Alternatively, the tool position acquisition means 34 can acquire position information of a location on the surveying tool 20 that is away from the contact portion 21 (for example, the base end). Alternatively, the tool position acquisition means 34 can acquire position information of multiple locations on the surveying tool 20. In this case, the tool position acquisition means 34 can also function as a tool posture acquisition means 35, which will be described later.

[0047] The tool posture acquisition means 35 is a means for acquiring posture information (e.g., direction information, inclination angle information, etc.) of the surveying tool 20. The method by which the tool posture acquisition means 35 acquires posture information of the surveying tool 20 is not particularly limited. For example, the tool posture acquisition means 35 can obtain posture information of the surveying tool 20 based on information obtained using posture detection means (not shown) provided on the surveying tool 20. The posture detection means may include direction detection means such as an electronic compass, inclination detection means such as an acceleration sensor, and rotation speed detection means such as a gyro sensor. Alternatively, as described above, posture information of the surveying tool 20 may be obtained by acquiring position information at multiple locations on the surveying tool 20 using the tool position acquisition means 34.

[0048] If a tool posture acquisition means 35 is provided, a posture information notification means (not shown) can be provided that can inform the user U of the posture information of the surveying tool 20 acquired by the tool posture acquisition means 35. This allows, for example, when surveying a location to be surveyed where higher surveying accuracy is required, the surveying tool 20 to be adjusted to be approximately parallel to the vertical direction while looking at the information from the posture information notification means (the posture information notification means functions like an electronic bubble level). The posture information notification means can inform the user U of the information via, for example, the display unit 11 of a head-mounted display device 10, or a display unit (not shown) can be provided on the surveying tool 20 and the information can be informed to the user U via the display unit.

[0049] The coordinate information acquisition means 36 is a means for acquiring coordinate information of the area to be measured based on the position information of the surveying tool 20 acquired by the tool position acquisition means 34 when the coordinate acquisition operation is performed with the contact portion 21 of the surveying tool 20 in contact with the area to be measured. The coordinate information acquisition means 36 may acquire the position information (coordinate values) of the surveying tool 20 acquired by the tool position acquisition means 34 as is, or it may acquire the coordinate information of the area to be measured after performing a predetermined offset from the position information of the surveying tool 20.

[0050] The object generation means 37 is a means for generating a predetermined object at a location corresponding to a location to be measured in the virtual space, based on the coordinate information of the location to be measured acquired by the coordinate information acquisition means 36. The connection line generation means 38 is a means for generating connection lines connecting one object to another in the virtual space based on the operation of user U. The storage means 39 is a means for storing the coordinate information acquired by the coordinate information acquisition means 36 and connection line information related to the connection lines generated by the connection line generation means 38.

[0051] The virtual space definition means 31, the virtual space information provision means 32, the display device position acquisition means 33, the tool position acquisition means 34, the relative position acquisition means 34a, the tool posture acquisition means 35, the coordinate information acquisition means 36, the object generation means 37, the coupling line generation means 38, and the storage means 39 are all independent and not limited to which device they are installed in (which device's computer implements them). For example, the virtual space definition means 31, the virtual space information provision means 32, the display device position acquisition means 33, the tool position acquisition means 34, the relative position acquisition means 34a, the tool posture acquisition means 35, the coordinate information acquisition means 36, the object generation means 37, the coupling line generation means 38, and the storage means 39 can all be installed in the head-mounted display device 10. The tool position acquisition means 34, the relative position acquisition means 34a, and the tool posture acquisition means 35 may also be installed in the surveying tool 20. Furthermore, the control unit 30 may be implemented by a single electronic computer, or by multiple electronic computers connected to each other (whether wirelessly or wired, and whether directly or indirectly connected).

[0052] 6. Other Embodiments Figure 5 is a front view of the surveying tool 20 in another embodiment. In the embodiments described above, a reflective member 12 is attached to the head-mounted display device 10 (Figure 1), and the position information of the surveying tool 20 is acquired based on the position information of the head-mounted display device 10 acquired using the total station T. In contrast, in the other embodiment, as shown in Figure 5, a reflective member 23 is attached to the surveying tool 20.

[0053] In other embodiments, the tool position acquisition means 34 can acquire positional information of the surveying tool 20 based on information obtained by an optical method using a reflective member 23 attached to the surveying tool 20 and a total station T (Figure 1). This allows for more direct acquisition of positional information of the surveying tool 20, thereby improving surveying accuracy.

[0054] In this case, it is preferable that the display device position acquisition means 33 acquires the position information of the head-mounted display device 10 based on information obtained by RTK positioning using GNSS signals. This is because, in other embodiments, as shown in Figure 1, if the head-mounted display device 10 is also provided with a reflective member support part 13, the total station T may mistakenly identify the reflective member support part 13 of the head-mounted display device 10 as the reflective member 23 of the surveying tool 20. For other configurations, the same configuration as in the embodiments described above can be adopted. [Explanation of Symbols]

[0055] 10. Head-mounted display device 11 Display section 12 Reflective material 13 Reflective member support part 14 Posture detection means 20 Surveying Tools 21 Contact part 22 Optical distance measuring means 22a Laser beam emission section 22a Laser light incident section 23 Reflective material 30 Control Unit 31 Virtual space definition means 32. Means for providing information in virtual space 33 Display device position acquisition means 34 Tool position acquisition method 34a Relative position acquisition means 35. Tooling and Stance Acquisition Methods 36. Means for acquiring coordinate information 37 Object Generation Means 38 Bond line generation means 39 Memory means T Total Station U User

Claims

1. A surveying system for surveying the area to be surveyed, A means for defining a virtual space corresponding to real space, A head-mounted display device that allows the user to view the virtual space superimposed on the real space, comprising a virtual space information providing means capable of providing information about the virtual space, A surveying tool having a contact portion for contacting the area to be measured, A tool position acquisition means that can acquire the position information of a surveying tool, A coordinate information acquisition means that, when a predetermined operation is performed with the contact portion of the surveying tool in contact with the area to be surveyed, can acquire coordinate information of the area to be surveyed based on the position information acquired by the tool position acquisition means, An object generation means that can generate a predetermined object at a location corresponding to the measurement location in the virtual space based on the coordinate information acquired by the coordinate information acquisition means, A connection line generation means that can generate connection lines connecting one object to another object within the virtual space based on user operations. A surveying system equipped with [a specific feature / feature].

2. A device position acquisition means that can acquire position information of a head-mounted display device based on information obtained by an optical method using a reflective member attached to a head-mounted display device and a total station, A relative position acquisition means capable of acquiring relative position information of a surveying tool relative to a head-mounted display device, Furthermore, The tool position acquisition means is capable of acquiring the position information of a surveying tool based on the position information of a head-mounted display device acquired by the display device position acquisition means and the relative position information acquired by the relative position acquisition means. The surveying system according to claim 1.

3. The means for acquiring the position of the display device is TS mode, which acquires position information of a head-mounted display device based on information obtained by an optical method using a reflective material and a total station, GNSS mode acquires position information of a head-mounted display device based on information obtained by RTK positioning using GNSS signals. It was made switchable. The surveying system according to claim 2.

4. The surveying system according to claim 1, wherein the tool position acquisition means is capable of acquiring position information of a surveying tool based on information obtained by an optical method using a reflective member attached to the surveying tool and a total station.

5. A surveying method that performs surveying using the surveying system described in any one of claims 1 to 4.

6. Electronic computing device, A means for defining a virtual space corresponding to real space, A head-mounted display device that allows the user to view the virtual space superimposed on the real space, comprising a virtual space information providing means capable of providing information about the virtual space, A tool position acquisition means capable of acquiring positional information of a surveying tool having a contact portion for contacting the area to be measured, A coordinate information acquisition means that, when a predetermined operation is performed with the contact portion of the surveying tool in contact with the area to be surveyed, can acquire coordinate information of the area to be surveyed based on the position information acquired by the tool position acquisition means, An object generation means that can generate a predetermined object at a location corresponding to the measurement location in the virtual space based on the coordinate information acquired by the coordinate information acquisition means, A connection line generation means that can generate connection lines connecting one object to another object within the virtual space based on user operations. A surveying program that can function as such.

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