Surveying system, surveying equipment, surveying method and program

Abstract

To improve efficiency of survey.SOLUTION: A survey system acquires map data, sets coordinates of a survey point as first coordinates in the acquired map data, acquires coordinates of a current position of a surveyor as second coordinates, measures distance from the set first coordinates to the acquired second coordinates, and emits a beep sound corresponding to the measured distance.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a technique that is useful for surveying. [Background technology]

[0002] 2. Description of the Related Art Conventionally, information obtained by surveying has been utilized at construction sites. For example, Patent Document 1 discloses a technology in which target position information transmitted from a total station is received at predetermined intervals and the display information on a surveying terminal device is updated based on a threshold value set according to the separation distance. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent Publication No. 2021-128003 Summary of the Invention [Problem to be solved by the invention]

[0004] Construction sites are mainly classified into small sites with a site area of ​​1,000 square meters or less, medium sites with an area of ​​more than 1,000 square meters but less than 10,000 square meters, and large sites with an area of ​​more than 10,000 square meters. The introduction of ICT (Information and Communication Technology) technology has progressed in surveying medium-sized and large sites, and surveying efficiency and cost optimization have progressed with UAV (Unmanned Aerial Vehicle) surveying using drones and surveying using 3D laser surveying instruments. On the other hand, surveying of small sites is mainly done by light wave surveying, and it has been difficult to achieve efficiency and cost optimization of surveying. In particular, when surveyors conduct surveying, they need to do so at an appropriate location, but there is a risk of misalignment between the survey point set on the map and the actual survey point in real space. Therefore, there is a demand for technology that can improve the efficiency of surveying by guiding surveyors to surveying points. Therefore, the inventors focused on a mechanism for emitting a beep sound according to the distance from the surveyor to the survey point during surveying.

[0005] The present invention aims to provide a surveying system, surveying device, surveying method, and program that can improve the efficiency of surveying by emitting a beep sound according to the distance from the surveyor to the survey point. [Means for solving the problem]

[0006] The present invention includes a first acquisition unit that acquires map data; The GNSS device acquires the 3D position of any point in real space surveyed, and calculates the coordinates of that 3D position. a setting unit that sets one or more coordinates of a survey point as one or more first coordinates in the map data; a second acquisition unit that acquires coordinates of a current position of the surveyor as second coordinates; A measurement unit that measures a distance between the one or more first coordinates that have been set and the acquired second coordinates; a notification unit that emits a beep sound according to the measured distance; A surveying system comprising:

[0007] According to the present invention, a surveying system includes: acquiring map data; The GNSS device acquires the 3D position of any point in real space surveyed, and calculates the coordinates of that 3D position. One or more coordinates of a survey point are set in the map data as one or more first coordinates, the coordinates of the surveyor's current location are acquired as second coordinates, the distance between the one or more set first coordinates and the acquired second coordinates is measured, and a beep sound corresponding to the measured distance is emitted.

[0008] Although the present invention is categorized as a system, the same functions and effects can be obtained with an apparatus, a method, and a program. Effect of the Invention

[0009] According to the present invention, it is possible to improve the efficiency of surveying. [Brief description of the drawings]

[0010] [Figure 1] FIG. 1 is a diagram for explaining an overview of a surveying system 1. [Diagram 2] FIG. 2 is a diagram showing the functional configuration of the surveying system 1. [Diagram 3] FIG. 2 is a flowchart showing a first coordinate setting process executed by the surveying system 1. [Figure 4] 2 is a diagram showing an example of map data displayed by the surveying instrument 10. FIG. [Diagram 5] FIG. 13 is a flowchart showing a notification process executed by the surveying system 1. [Figure 6] 1 is a diagram showing a schematic example of a first guidance screen displayed by the surveying instrument 10. FIG. [Figure 7] 13 is a diagram showing a schematic example of a second guidance screen displayed by the surveying instrument 10. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0011] Hereinafter, a detailed description will be given of an embodiment of the present invention with reference to the accompanying drawings. In the following drawings, the same elements are designated by the same numbers or symbols throughout the description of the embodiment.

[0012] [Basic concept / basic configuration] 1 is a diagram for explaining an overview of a surveying system 1. The surveying system 1 is a system that includes at least a surveying instrument 10 and surveys a real space. In this embodiment, the surveying system 1 is composed only of the surveying instrument 10, but it may also be connected to other terminals and devices capable of data communication, such as surveying instruments such as a GNSS (Global Navigation Satellite System) device or a total station, a 3D position storage device (e.g., a GNSS device, a total station, a cloud computer) that stores the surveying results of the 3D position of any point in real space surveyed by these surveying instruments, and a computer with a server function that stores drawing data, etc.

[0013] In this embodiment, it is assumed that the surveying instrument 10 is used for surveying, and executes each process by using a predetermined application.

[0014] An overview of the processing steps when the surveying system 1 emits a beep sound according to distance will be described with reference to FIG.

[0015] The surveying instrument 10 acquires map data (step S1). The map data is, for example, Computer-Aided Design (CAD) drawings, route data, coordinate data, and construction data, and is data in, for example, a Comma-Separated Values ​​(CSV) format or a Surveying Instruments Manufacturers' Association (SIMA) format. The surveying instrument 10 acquires map data stored in a computer or the like connected to it so as to be capable of data communication, or map data stored in the surveying instrument 10 itself.

[0016] The surveying instrument 10 sets the coordinates of the survey point as first coordinates in the acquired map data (step S2). The coordinates of a survey point are expressed in a Cartesian coordinate system consisting of three axes: X, Y, and Z. The surveying instrument 10 acquires the first coordinate by accepting direct input of the first coordinate, importing CSV data into which the numerical values ​​of the first coordinate have been input, acquiring coordinates surveyed by a GNSS device, etc., and sets the first coordinate on the map data.

[0017] The surveying instrument 10 acquires the coordinates of the surveyor's current position as second coordinates (step S3). The surveying device 10 acquires coordinates indicating location information of its own current position as second coordinates from a GPS (Global Positioning System) etc. The surveying device 10 constantly acquires coordinates indicating its own location information as second coordinates in accordance with the movement of the surveyor.

[0018] The surveying instrument 10 measures the distance from the set first coordinate to the acquired second coordinate (step S4). The distance in this process refers to the length of the line segment connecting the first coordinate and the second coordinate. The surveying device 10 measures the distance from the first coordinate set on the map data to the acquired second coordinate. The surveying device 10 measures this distance using a general method for measuring the distance between two points in a three-dimensional space. The surveying device 10 constantly measures the distance from the first coordinate to the second coordinate in accordance with the movement of the surveyor.

[0019] The surveying instrument 10 emits a beep sound according to the measured distance (step S5). When the surveying instrument 10 is within a predetermined range, it emits a beep sound according to the measured distance. For example, as the surveying instrument 10 is within the predetermined range and the measured distance becomes shorter, it emits beeps with one or a combination of the following: a higher frequency of beeps, a longer duration of beeps, or a higher pitch of beeps.

[0020] According to such a surveying system 1, it is possible to improve the efficiency of the surveying.

[0021] [Function configuration] The functional configuration of the surveying system 1 will be described with reference to FIG. The surveying system 1 is a system that includes at least a surveying device 10 carried by a surveyor who conducts surveying at a construction site or the like, and that conducts surveying of a real space. In this embodiment, the surveying system 1 is composed only of the surveying instrument 10, but it may also be connected to other terminals and devices, such as surveying instruments such as a GNSS device or a total station, 3D position storage devices (e.g., GNSS devices, total stations, cloud computers) that store the surveying results of the 3D position of any point in real space surveyed by these surveying instruments, and computers with server functions that store drawing data, etc., so as to be able to communicate data via a network such as a public line network. The surveying system 1 may include other terminals, devices, etc. in addition to the surveying instrument 10. In this case, the surveying system 1 executes the processes described below using any one or a combination of the included terminals, devices, etc. In this specification, a cloud computer may refer to either a computer that uses any computer in a scalable manner to perform a specific function, or a computer that includes multiple functional modules to realize a system, the functions of which can be freely combined.

[0022] The surveying device 10 is a mobile terminal such as a mobile phone, smartphone, tablet terminal, etc., used to survey real space, and performs surveying-related processing, various data communication processing, various data processing, measurement processing of various data, notification processing using beep sounds, etc., using specific applications installed on the surveying device.

[0023] The surveying device 10 has a control unit such as a CPU (Central Processing Unit), a GPU (Graphics Processing Unit), a RAM (Random Access Memory), and a ROM (Read Only Memory), and has a communication unit such as a device for enabling communication with other terminals and devices, a first acquisition unit 11 for acquiring map data, and a second acquisition unit 12 for acquiring second coordinates. The surveying instrument 10 also includes a data storage unit such as a hard disk, semiconductor memory, storage medium, or memory card as a memory unit. In addition, the surveying instrument 10 is equipped with, as processing units, various devices that perform various processes, a setting unit 13 that sets a first coordinate, a measurement unit 14 that measures the distance between the first coordinate and the second coordinate, and a notification unit 15 that emits a beep according to the distance.

[0024] In the surveying instrument 10, the control unit reads a predetermined program and thereby cooperates with the communication unit to realize a map data acquisition module and a second coordinate acquisition module. In addition, in the surveying device 10, the control unit reads a specified program and cooperates with the processing unit to realize a map data display module, a first coordinate setting module, a first screen display module, a distance measurement module, a distance judgment module, a second screen display module, and a notification module.

[0025] Hereinafter, each process executed by the surveying system 1 will be described together with the processes executed by each of the modules described above. In this embodiment, each module executes its processing contents by a predetermined application.

[0026] [First coordinate setting process executed by the surveying device 10] The first coordinate setting process executed by the surveying instrument 10 will be described with reference to Fig. 3. This figure is a diagram showing a flowchart of the first coordinate setting process executed by the surveying instrument 10. This first coordinate setting process is a detailed description of the map data acquisition process (step S1) and the first coordinate setting process (step S2) described above.

[0027] The map data acquisition module acquires map data (step S10). The map data is, for example, CAD drawings, route data, coordinate data, and construction data, and is, for example, data in CSV format or SIMA format. The map data acquisition module acquires map data from a computer or the like having a server function that is connected so as to be capable of data communication. The computer receives a request to transmit map data from the surveying instrument 10, and extracts map data desired by the surveying instrument 10 based on the received transmission request. The computer transmits the extracted map data to the surveying instrument 10. The map data acquisition module receives the map data transmitted by the computer, thereby acquiring the map data. The map data acquisition module may also be configured to acquire map data that is pre-stored in the surveying instrument 10. Furthermore, the type and format of the map data are not limited to the above-mentioned examples.

[0028] The map data display module displays the acquired map data (step S11). The map data display module displays map data centered on the vehicle's current position or a preset location on the display unit of the vehicle based on the acquired map data. At this time, the map data display module may display the map data as is, or may display the map data in a predetermined format (for example, KML format).

[0029] The first coordinate setting module sets the coordinates of the survey point as first coordinates in the acquired map data (step S12). The coordinates of a survey point are expressed in a Cartesian coordinate system consisting of three axes: X, Y, and Z. The first coordinate setting module sets the first coordinate by, for example, accepting direct input, importing CSV data into which the numerical values ​​of the first coordinate are input, or acquiring coordinates measured by a GNSS device. The first coordinate setting module can set one or more first coordinates. A case where the first coordinate setting module receives a direct input will be described. The first coordinate setting module accepts input of a first coordinate for map data to be displayed on the display unit. The first coordinate setting module accepts an input operation such as a tap operation on a point desired by a surveyor in the map data, and sets the accepted point as the first coordinate. The first coordinate setting module may also accept direct input of a numerical value of the first coordinate, and set the accepted numerical value as the first coordinate. A case where the first coordinate setting module imports CSV data will be described. The first coordinate setting module acquires CSV data into which numerical values ​​of first coordinates are inputted from a computer connected to the first coordinate setting module for data communication or stored in advance in the first coordinate setting module. The first coordinate setting module imports the acquired CSV data and displays a list of each coordinate. The first coordinate setting module accepts a selection input such as a tap operation on the displayed list, and sets the accepted coordinates as the first coordinates. Note that the first coordinate setting module may directly set the numerical values ​​of each first coordinate inputted in the imported CSV data as the first coordinates. A case where the first coordinate setting module acquires coordinates measured by a GNSS device will be described. The first coordinate setting module acquires the three-dimensional position of an arbitrary point in real space surveyed by the GNSS device. The first coordinate setting module specifies coordinates on the map data that correspond to the three-dimensional position. The first coordinate setting module sets the specified coordinates as the first coordinates. The method of setting the first coordinates executed by the first coordinate setting module is not limited to the above-mentioned example.

[0030] The map data display module displays the set first coordinates on the map data (step S13). The map data display module displays the current position and the first coordinates of the surveying device 10 itself on the map data (see FIG. 4). The current position of the surveying device 10 itself is specified by its own position information acquired by the surveying device 10 from a GPS or the like. When only one first coordinate is set, the map data display module displays this one first coordinate on the map data. When multiple first coordinates are set, the map data display module may display each first coordinate on the map data, or may display only the first coordinates set within a predetermined range from the surveyor's current position on the map data, or may display multiple set first coordinates by other methods. The surveyor moves toward the first coordinates that the surveying instrument 10 has displayed on the map data.

[0031] [Map data displayed by surveying device 10] The map data displayed by the map data display module will be described with reference to Fig. 4. The figure is a diagram showing an example of map data displayed by the map data display module. In the figure, the map data display module displays map data 30 on its own display unit. The map data 30 shows a current position icon 31 indicating the current position of the surveying instrument 10 on the map data, and a first coordinate icon 32 indicating the position of a first coordinate (survey point) on the map data. The current position icon 31 is an isosceles triangle icon, the center point of which indicates the current position of the surveying instrument 10, and the apex angle indicates the traveling direction of the surveyor. The first coordinate icon 32 is a triangular icon, one of the apexes of which indicates the position of the first coordinate on the map data. The map data 30 also shows a first range 33 and a second range 34, which will be described later. The first range 33 indicates an area within a predetermined range from the first coordinates. The second range 34 indicates an area within a predetermined range that is closer to the first coordinates than the first range 33. The contents (shape, type, aspect, etc.) of each icon are not limited to the above-mentioned examples. The contents (shape, type, aspect, etc.) of each range are not limited to the above-mentioned examples.

[0032] The above is the first coordinate setting process. The surveying instrument 10 executes the process described below based on the first coordinates set by this first coordinate setting process.

[0033] [Notification process executed by the surveying device 10] The notification process executed by the surveying device 10 will be described with reference to Fig. 5. This figure is a diagram showing a flowchart of the notification process executed by the surveying device 10. This notification process is details of the above-mentioned second coordinate acquisition process (step S3), the process of measuring the distance between the first coordinate and the second coordinate (step S4), and the process of issuing a beep sound according to the measured distance (step S5), and is a process executed after the above-mentioned first coordinate setting process.

[0034] The second coordinate acquisition module acquires the coordinates of the surveyor's current position as the second coordinates (step S20). The second coordinate acquisition module acquires, as the second coordinate, coordinates indicating its own position information from a GPS etc. In the following processes, the second coordinate acquisition module will be described as constantly acquiring, as the second coordinate, coordinates indicating its own position information in accordance with the movement of the surveyor.

[0035] The first screen display module displays a first guidance screen to the survey point (step S21). The first screen display module displays a first guidance screen on a display unit or the like that guides the surveyor from his / her current position (second coordinate) to the survey point (first coordinate) (see Fig. 6). The first screen display module displays the surveyor's travel direction, directions to the survey point, etc. as the first guidance screen. The surveyor moves to the survey point while viewing this first guidance screen.

[0036] [First guidance screen displayed by the surveying device 10] The first guide screen displayed by the first screen display module will be described with reference to Fig. 6. The figure is a schematic diagram showing an example of the first guide screen displayed by the first screen display module. In the figure, the first screen display module shows a state in which the first guide screen 40 is displayed. The first guidance screen 40 displays a heading icon 41 indicating the surveyor's heading direction, a direction icon 42 indicating the direction of the surveyor's heading, a forward / backward icon 43 indicating directions to the survey point, a left / right icon 44, and an altitude icon 45. The travel direction icon 41 indicates the travel direction based on various sensors built into the surveying instrument 10, and the apex indicates the surveyor's travel direction. The orientation icon 42 indicates the direction based on various sensors built into the surveying instrument 10, and the apex indicates the direction the surveyor is facing. The front / rear icon 43 indicates the front / rear distance from the current position of the surveying instrument 10 to the survey point, and is measured using the coordinates of the current position and the coordinates of the survey point. The front / rear icon 43 indicates the direction by the direction of the arrow and the text inside the icon, and the distance by the numerical value displayed at the bottom of the icon. In the figure, the survey point is in front of the surveyor, and the distance is "6.665". If the current position of the surveying instrument 10 is behind the surveyor, the direction of the front / rear icon 43 may be reversed, the text may be changed, or the numerical value of the distance may be displayed as "-". The left / right icon 44 indicates the left / right distance from the current position of the surveying device 10 to the survey point, and is measured using the coordinates of the current position and the coordinates of the survey point. The left / right icon 44 indicates the direction by the direction of the arrow and the text inside the icon, and the distance by the numerical value displayed at the bottom of the icon. In the figure, the survey point is to the right of the surveyor, and the distance is "2.489". If the current position of the surveying device 10 is to the left of the surveyor, the direction of the left / right icon 44 may be reversed, the text may be changed, or the numerical value of the distance may be displayed as "-". The altitude icon 45 indicates the altitude from the current position of the surveying device 10 to the survey point, and is measured using the coordinates of the current position and the coordinates of the survey point. The altitude icon 45 indicates the direction using the direction of the arrow and the text inside the icon, and indicates the altitude using a numerical value displayed at the bottom of the icon. In the figure, the survey point is located higher than the surveyor, and the altitude is "+1.464". If the current position of the surveying device 10 is located lower than the surveyor, the orientation of the altitude icon 45 may be reversed, the text may be changed, or the distance numerical value may be displayed as "-". The surveyor views this first guidance screen 40, understands the positional relationship between the current position and the survey point, and moves toward the survey point.

[0037] The distance measurement module measures the distance from the set first coordinates to the acquired second coordinates (step S22). The distance in this process refers to the length of the line segment connecting the first coordinate and the second coordinate. The distance measurement module measures the distance between a first coordinate set on the map data and a second coordinate acquired on the map data. The distance measurement module measures this distance using a general method for measuring the distance between two points in a three-dimensional space. In the following processes, the distance measurement module will be described as constantly measuring the distance from the first coordinate to the second coordinate in accordance with the movement of the surveyor. The method of measuring the distance is not limited to the above example.

[0038] The distance determination module determines whether the measured distance is within a first range (step S23). In this process, the term "within the first range" refers to a range that is less than a preset distance. This first range is, for example, a circle with a radius of 5 m centered on the first coordinate. The distance determination module determines whether the measured distance is within the first range, and thereby determines whether the surveyor is inside the circle. The distance determination module determines whether the surveyor is within the first range 33 in FIG. 4 described above. If the distance determination module determines that the measured distance is not within the first range (step S23 NO), that is, in the above example, if the distance measured by the distance measurement module is 5 m or more, the surveying device 10 repeats the processing of step S23 in accordance with the surveyor's movement.

[0039] On the other hand, if the distance determination module determines that the measured distance is within the first range (step S23 YES), that is, in the above example, if the distance measured by the distance measurement module is less than 5 m, the second screen display module displays the second guidance screen to the survey point (step S24). The second screen display module displays the second guidance screen by switching the screen display from the first guidance screen to the second guidance screen. Like the first guidance screen, the second guidance screen guides the surveyor from his / her current position (second coordinate) to the survey point (first coordinate) (see Figure 7). The second screen display module displays the surveyor's current position and directions to the survey point as the second guidance screen. The difference between the first and second guidance screens is that the first guidance screen indicates the surveyor's direction of travel using a direction icon 41, while the second guidance screen indicates the survey point and the surveyor's current position using an electronic compass centered on the survey point. The surveyor moves to the survey point while viewing this second guidance screen.

[0040] [Second guidance screen displayed by the surveying device 10] The second guide screen displayed by the second screen display module will be described with reference to Fig. 7. This figure is a schematic diagram showing an example of the second guide screen displayed by the second screen display module. In this figure, the second screen display module shows a state in which the second guide screen 50 is displayed. The second guidance screen 50 is centered on the survey point 51 and displays an electronic compass 53 indicating the surveyor's current position 52, a direction icon 54 indicating the direction the surveyor is traveling, a forward / backward icon 55 providing guidance to the survey point, a left / right icon 56, and an altitude icon 57. The electronic compass 53 is based on various sensors built into the surveying device 10, and its center is the survey point 51, with the surveyor's current position 52 displayed inside. In addition, a line segment connecting the survey point 51 and the current position 52 and the measured distance from the survey point 51 to the current position 52 are displayed. The direction icon 54 indicates the direction based on various sensors built into the surveying device 10, with the apex indicating the direction the surveyor is facing. The forward / backward icon 55, the left / right icon 56, and the altitude icon 57 are the same as the icons with the same names on the first guide screen (see FIG. 6) described above. The surveyor views this second guidance screen 50, understands the positional relationship and distance between the current position and the survey point, and moves toward the survey point.

[0041] The distance determination module determines whether the measured distance is within a second range (step S25). In this process, the term "within the second range" refers to a range that is less than a preset distance that is closer to the survey point than the first range. This second range is, for example, a circle with a radius of 10 cm centered on the first coordinate. The distance determination module determines whether the measured distance is within the second range, and thereby determines whether the surveyor is inside the circle. The distance determination module determines whether the surveyor is within the second range 34 in FIG. 4 described above. If the distance determination module determines that the measured distance is not within the second range (step S25 NO), that is, in the above example, if the distance measured by the distance measurement module is 10 cm or more, the surveying device 10 repeats the processing of step S25 in accordance with the surveyor's movement. In addition, if the distance judgment module determines that the measured distance is outside the first range, the surveying device 10 again executes the processing of step S21 described above and displays the first guidance screen by switching the screen display to the first guidance screen.

[0042] On the other hand, if the distance determination module determines that the measured distance is within the second range (step S25 YES), that is, in the above example, if the distance measured by the distance measurement module is less than 10 cm, the notification module emits a beep according to the distance (step S26). The notification module emits a beep in one or a combination of the following manner as the distance between the first coordinate and the second coordinate measured by the distance measurement module becomes shorter: increasing the frequency of the beep, increasing the length of the beep, or increasing the pitch of the beep. It should be noted that the content of the beep sound emitted by the notification module is not limited to the above-mentioned example.

[0043] This completes the notification process. The surveyor will know the location of the survey point based on the beep and will carry out survey of the survey point.

[0044] Although each of the above processes is described as a separate process, the surveying instrument 10 can be configured to execute a combination of some or all of the above processes. Also, the surveying instrument 10 can be configured to execute each process at a timing other than the timing described.

[0045] The above-mentioned means and functions are realized by a computer (including a CPU, an information processing device, and various terminals) reading and executing a predetermined program. The program may be provided, for example, from the computer via a network (Software as a Service (SaaS)) or as a cloud service. The program may also be provided in a form recorded on a computer-readable recording medium. In this case, the computer reads the program from the recording medium, transfers it to an internal or external recording device, records it, and executes it. The program may also be recorded in advance on a recording device (recording medium) and provided from the recording device to the computer via a communication line.

[0046] Although the embodiments of the present invention have been described above, the present invention is not limited to these embodiments. Furthermore, the effects described in the embodiments of the present invention are merely a list of the most preferable effects resulting from the present invention, and the effects of the present invention are not limited to those described in the embodiments of the present invention.

[0047] (1) a first acquisition unit (e.g., a first acquisition unit 11, a map data acquisition module) that acquires map data; A setting unit (e.g., a setting unit 13, a first coordinate setting module) that sets the coordinates of the survey point as first coordinates in the acquired map data; a second acquisition unit (e.g., a second acquisition unit 12, a second coordinate acquisition module) that acquires coordinates of the surveyor's current position as second coordinates; A measurement unit (e.g., a measurement unit 14, a distance measurement module) that measures a distance between the set first coordinates and the acquired second coordinates; A notification unit (e.g., notification unit 15, notification module) that emits a beep sound according to the measured distance; A surveying system comprising:

[0048] According to the invention (1), it is possible to improve the efficiency of surveying.

[0049] (2) the notification unit increases the frequency of emitting the beep sound as the distance becomes shorter; A surveying system as described in (1).

[0050] According to the invention of (2), it becomes easier for a surveyor to grasp the distance to a survey point, thereby improving the efficiency of surveying.

[0051] (3) the notification unit increases the length of the beep as the distance decreases; A surveying system as described in (1).

[0052] According to the invention of (3), it becomes easier for a surveyor to grasp the distance to a survey point, and the efficiency of surveying can be improved.

[0053] (4) The notification unit increases the pitch of the beep as the distance decreases. A surveying system as described in (1).

[0054] According to the invention (4), it becomes easier for a surveyor to grasp the distance to a survey point, thereby improving the efficiency of surveying.

[0055] (5) a display unit (e.g., a second screen display module) that displays a guidance screen (e.g., a second guidance screen 50) to the survey point when the distance falls within a first range; and The surveying system according to (1) further comprises:

[0056] According to the invention (5), it becomes easier for a surveyor to grasp the distance to a survey point, thereby improving the efficiency of surveying.

[0057] (6) When the distance falls within a second range that is closer to the measurement point than the first range, the notification unit emits a beep sound corresponding to the distance. (5) A surveying system as described above.

[0058] According to the invention (6), it becomes easier for a surveyor to grasp the distance to a survey point, and the efficiency of surveying can be improved.

[0059] (7) a first acquisition unit (e.g., a first acquisition unit 11, a map data acquisition module) that acquires map data; A setting unit (e.g., a setting unit 13, a first coordinate setting module) that sets the coordinates of the survey point as first coordinates in the acquired map data; a second acquisition unit (e.g., a second acquisition unit 12, a second coordinate acquisition module) that acquires coordinates of the surveyor's current position as second coordinates; A measurement unit (e.g., a measurement unit 14, a distance measurement module) that measures a distance between the set first coordinates and the acquired second coordinates; A notification unit (e.g., notification unit 15, notification module) that emits a beep sound according to the measured distance; A surveying instrument comprising:

[0060] (8) A computer-implemented surveying method comprising the steps of: A step of acquiring map data (e.g., step S10); A step of setting the coordinates of the survey point as first coordinates in the acquired map data (for example, step S12); A step of acquiring coordinates of a current position of a surveyor as a second coordinate (for example, step S20); A step of measuring a distance between the set first coordinates and the acquired second coordinates (for example, step S22); A step of emitting a beep sound according to the measured distance (for example, step S26); A surveying method comprising:

[0061] (9) To the computer: A step of acquiring map data (e.g., step S10); A step of setting the coordinates of the survey point as first coordinates in the acquired map data (for example, step S12); A step of acquiring coordinates of a current position of a surveyor as second coordinates (e.g., step S20); A step of measuring a distance between the set first coordinates and the acquired second coordinates (for example, step S22); A step of emitting a beep sound according to the measured distance (e.g., step S26); A computer readable program for executing the program. [Explanation of symbols]

[0062] 1. Surveying System 10 Surveying equipment 11 First acquisition part 12 Second acquisition part 13 Setting section 14 Measurement section 15 Notification Department 30 Map Data 31 Current location icon 32 1st coordinate icon 33 1st Range 34 Second Range 40 1st guidance screen 41 Direction Icon 42 Compass Icon 43 Front and rear icons 44 Left and Right Icons 45 Advanced Icon 50 Second guidance screen 51 survey points 52 Current location 53 Electronic Compass 54 Compass Icon 55 Front and rear icons 56 Left and Right Icons 57 Advanced Icon

Claims

1. A first acquisition unit that acquires map data; a setting unit that acquires a three-dimensional position of an arbitrary point in real space surveyed by a GNSS device, and sets coordinates of the three-dimensional position in the map data, and one or more coordinates of the survey point as one or more first coordinates; a second acquisition unit that acquires coordinates of a current position of the surveyor as second coordinates; a measurement unit that measures a distance between the one or more first coordinates that have been set and the acquired second coordinates; a notification unit that emits a beep sound according to the measured distance; A surveying system comprising:

2. a map data display unit that displays the one or more first coordinates that have been set on the map data; The surveying system according to claim 1 , further comprising:

3. The surveying system according to claim 2 , wherein the map data display unit displays each of the first coordinates on the map data when the plurality of first coordinates are set.

4. 3. The surveying system according to claim 2, wherein when the plurality of first coordinates are set, the map data display unit displays, on the map data, only the first coordinates that are set within a predetermined range from the second coordinates.

5. The notification unit increases the frequency of issuing the beep sound as the distance becomes shorter. The surveying system according to claim 1 .

6. The notification unit increases the length of the beep as the distance decreases. The surveying system according to claim 1 .

7. The notification unit increases the pitch of the beep as the distance decreases. The surveying system according to claim 1 .

8. a guidance screen display unit that displays a guidance screen to the survey point when the distance falls within a first range; The surveying system according to claim 1 , further comprising:

9. the notification unit emits a beep sound corresponding to the distance when the distance falls within a second range that is closer to the measurement point than the first range. The surveying system according to claim 8.

10. A first acquisition unit that acquires map data; a setting unit that acquires a three-dimensional position of an arbitrary point in real space surveyed by a GNSS device, and sets coordinates of the three-dimensional position in the map data, and one or more coordinates of the survey point as one or more first coordinates; a second acquisition unit that acquires coordinates of a current position of the surveyor as second coordinates; a measurement unit that measures a distance between the one or more first coordinates that have been set and the acquired second coordinates; a notification unit that emits a beep sound according to the measured distance; A surveying instrument comprising:

11. 1. A computer implemented surveying method comprising: obtaining map data; acquiring a three-dimensional position of an arbitrary point in real space surveyed by a GNSS device, and setting coordinates of the three-dimensional position in the map data, and one or more coordinates of the survey point as one or more first coordinates; acquiring coordinates of a current position of a surveyor as second coordinates; measuring a distance between the one or more first coordinates that have been set and the acquired second coordinates; emitting a beep sound corresponding to the measured distance; A surveying method comprising:

12. On the computer, obtaining map data; acquiring a three-dimensional position of an arbitrary point in real space surveyed by a GNSS device, and setting the coordinates of the three-dimensional position in the map data as one or more first coordinates of the survey point; acquiring coordinates of a current position of the surveyor as second coordinates; measuring a distance from the one or more first coordinates that have been set to the acquired second coordinates; emitting a beep sound corresponding to the measured distance; A computer readable program for executing the program.

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