Surveying system and method

Abstract

A surveying system and a surveying method are provided that are capable of appropriately recognizing a plurality of target points and efficiently measuring them. [Solution] A registration control unit 101 registers identification information of multiple target points and the set coordinates of the target points in a registration database in association with each other. An acquisition control unit 102 acquires the current coordinates of the on-site terminal device 13 using a position detection device 14. A search control unit 103 searches for identification information of a nearby target point closest to the current coordinates of the on-site terminal device 13. A display control unit 104 displays the identification information of the searched nearby target point, the measurement key of the nearby target point, and a re-search key for the nearby target point. A re-search control unit 105 re-acquires the current coordinates of the on-site terminal device 13 and re-searches for the nearby target point. A measurement control unit 106 uses a three-dimensional surveying instrument to measure the measurement coordinates of the nearby target point. An association control unit 107 associates the measured measurement coordinates of the nearby target point with the identification information of the nearby target point and stores them.

Description

[Technical field]

[0001] The present invention relates to a surveying system and a surveying method. [Background technology]

[0002] Conventionally, there are surveying systems and methods that use a mobile terminal to make surveying work more efficient. For example, JP 2021-144003 A (Reference 1) discloses a surveying method that includes a position acquisition device and a mobile terminal. The position acquisition device includes a communication unit and is capable of acquiring the position coordinates of a user. The mobile terminal is capable of communicating with the position acquisition device and includes a terminal communication unit, a terminal display unit, a terminal operation unit, and a terminal control unit. First, the terminal control unit reads three-dimensional design data of the work area, sets the observation proceeding direction and a first measurement point, and causes the position acquisition device to acquire the user's position coordinates. Next, the terminal control unit guides the user to the first measurement point and causes the position acquisition device to acquire the user's position coordinates at the first measurement point. Next, the terminal control unit sets the point closest to the first measurement point in the proceeding direction as the second measurement point, guides the user to the second measurement point, and causes the position acquisition device to acquire the user's position coordinates. In this way, the terminal control unit sequentially sets each measurement point, guides the user to each measurement point, and instructs the acquisition of position coordinates at each measurement point, thereby providing a technology that enables efficient observation tailored to the terrain with simple operations. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2021-144003 A Summary of the Invention [Problem to be solved by the invention]

[0004] In the fields of architecture, construction, civil engineering, and the like, there is a task of periodically measuring the coordinates of a target point (target object, target position) in a geographic coordinate system to check the fluctuation or movement of the target point. The target point is not limited to buildings and structures, but also includes a wide range of objects such as roads, bridges, and tunnels.

[0005] Here, when there are multiple target points and they are densely packed in a given area, the user (measurer) marks each of the multiple target points in order to identify them and measures the coordinates of the target points in the geographic coordinate system. However, this method has the problem that the task of marking the points is time-consuming and tedious.

[0006] There is also a method in which the user identifies a target point by remembering the position or location of the target point without marking the target point, but this method has the problem that if the user makes a mistake or forgets the position or location of the target point, the target point that was once measured must be measured again, and the re-measurement work takes time and effort. Therefore, there has been a demand for a system that allows the user to recognize which target point to measure when there are multiple target points.

[0007] Here, the technology described in Patent Document 1 is configured so that the system sets measurement points based on 3D design data and the user's position, and guides the user to those measurement points to obtain their position coordinates. However, there is an issue in that the user simply follows the guidance of the system and is unable to recognize which measurement point to measure.

[0008] Therefore, the present invention has been made to solve the above-mentioned problems, and has an object to provide a surveying system and a surveying method that are capable of properly recognizing multiple target points and performing measurements efficiently. [Means for solving the problem]

[0009] The surveying system according to the present invention includes a registration control unit, an acquisition control unit, a search control unit, a display control unit, a re-search control unit, a measurement control unit, and an association control unit. The registration control unit registers identification information of a plurality of target points and previously measured set coordinates of the target points in a geographic coordinate system in a predetermined registration database in association with each other. The acquisition control unit acquires the current point coordinates of the user terminal in the geographic coordinate system using a position detection device provided close to the user terminal. The search control unit searches for identification information of a nearby target point that is closest to the current point coordinates of the user terminal based on the acquired current point coordinates of the user terminal and the set coordinates of each target point in the registration database. The display control unit displays the identification information of the searched nearby target point, a measurement key of the nearby target point, and a re-search key of the nearby target point. If the identification information of the nearby target point is not the desired target point, the re-search control unit re-acquires the current coordinates of the user terminal and re-searches for the nearby target point when the re-search key is selected. When the identification information of the nearby target point is a desired target point, the measurement control unit, upon selection of the measurement key, directs the three-dimensional surveying instrument to the nearby target point based on the set coordinates of the nearby target point, and measures the measurement coordinates of the target point in a geographic coordinate system. When the measurement coordinates of the nearby target point are measured, the association control unit stores the measured measurement coordinates of the nearby target point in the registration database in association with the identification information of the nearby target point.

[0010] The surveying method according to the present invention includes a registration control step, an acquisition control step, a search control step, a display control step, a re-search control step, a measurement control step, and an association control step. Each control step of the surveying method corresponds to each control unit of the surveying system. Effect of the Invention

[0011] According to the present invention, it is possible to appropriately recognize a plurality of target points and perform measurements efficiently. [Brief description of the drawings]

[0012] [Figure 1]1 is a schematic diagram of a surveying system according to an embodiment of the present invention. [Diagram 2] FIG. 1 is a functional block diagram of a surveying system according to an embodiment of the present invention. [Diagram 3] 1 is a flowchart showing an execution procedure of a surveying method according to an embodiment of the present invention. [Figure 4] FIG. 4A is a diagram showing an example of a registration process and a registration database, and FIG. 4B is a diagram showing an example of a search screen display and acquisition of the current point coordinates of a field terminal device. [Diagram 5] FIG. 5A shows an example of a search area and an error screen, and FIG. 5B shows an example of a confirmation screen when the set coordinates of a target point are included within the search area. [Figure 6] Again, FIG. 6A shows an example of the confirmation screen displayed when the set coordinates of the target point are included within the search area, and FIG. 6B shows an example of the measurement screen displayed and measurement by the surveying instrument. [Figure 7] 7A is a diagram showing an example of a related process and a registration database, and FIG. 7B is a diagram showing a display of a save screen and an example of the next search process. [Figure 8] FIG. 8A shows an example of repeated measurements by a user, and FIG. 8B shows an example of a registered database after the repeated measurements. [Figure 9] Plan and section views of a given survey site. [Figure 10] 1 is a table of measurement results for 21 target locations in an embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0013] Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings to help the understanding of the present invention. Note that the following embodiment is an example of the present invention and is not intended to limit the technical scope of the present invention.

[0014] A surveying system 1 according to the present invention comprises a surveying instrument 10, a terminal device for the surveying instrument 11, a server 12, a field terminal device 13, a position detection device 14, an office terminal device 15, and a network 16. Here, the surveying instrument 10 and the terminal device for the surveying instrument 11, together with the field terminal device 13 and the position detection device 14, are transported by a user (a measurer, a surveyor, etc.) and brought to the surveying site.

[0015] Here, at the survey site, there are multiple target points 2 whose coordinates (location information) in the geographic coordinate system need to be measured. There is no particular limitation on the type of target points 2, but examples of the target points 2 include buildings, structures, structures, reference points, or parts of these, as well as targets installed by the user (reflecting prisms, target stickers), etc.

[0016] Moreover, the surveying instrument 10 is generally used at construction sites and civil engineering sites, and allows for automatic collimation and automatic tracking. Here, the surveying instrument 10 comprises a main body 100 and a (collimation) telescope 101. Moreover, the main body 100 is configured to be rotatable in the horizontal direction, and the telescope 101 is provided to be rotatable in the vertical direction relative to the main body 100. Therefore, the telescope 101 is rotatable in the horizontal direction and the vertical direction relative to the surveying instrument 10.

[0017] Furthermore, when the telescope 101 of the surveying instrument 10 is collimated to the target point 2 and a measurement command is input to the surveying instrument 10, the surveying instrument 10 irradiates a scanning light from the telescope 101 to the target point 2, and the scanning light is reflected from the target object and enters the telescope 101 again. The incident reflected light is converted into a light receiving signal by the light receiving element of the surveying instrument 10. The surveying instrument 10 detects the horizontal angle and vertical angle of the telescope 101 with an angle detector. Then, the light wave distance meter of the surveying instrument 10 measures the oblique distance from the surveying instrument 10 to the target point 2 using the light receiving signal. Here, the light wave distance meter has a predetermined mode using a reflecting prism and a target sheet, and a non-prism mode not using a target sheet or a prism, but the present invention is not particularly limited to this mode.

[0018] Furthermore, the main body 100 (measurement unit) of the surveying instrument 10 acquires the coordinates (three-dimensional coordinate values) of the target point 2 as measured values ​​based on the detected horizontal angle and vertical angle of the telescope 101 and the measured oblique distance. The coordinates of the target point 2 are calculated, for example, based on the coordinates of the instrument point of the surveying instrument 10.

[0019] The terminal device 11 for the surveying instrument is a commonly used computer, and may be, for example, a small computer, which may be connected externally to the surveying instrument 10 or may be built into the surveying instrument 10. The terminal device 11 for the surveying instrument controls the operation of the surveying instrument 10 based on instructions from a user. The terminal device 11 for the surveying instrument can also obtain information from the server 12 and transmit survey results from the surveying instrument 10 to the server 12 via the network 16.

[0020] The server 12 is a commonly used computer that stores information in a storage medium and reads information from the storage medium, and also exchanges information with the surveying instrument terminal device 11 and the field terminal device 13 via the network 16.

[0021] The on-site terminal device 13 is a commonly used computer, and includes, for example, a mobile terminal device with a touch panel, a tablet terminal device, and a wearable terminal device, and is basically a portable terminal device. In other words, the on-site terminal device 13 is a user terminal. The on-site terminal device 13 accesses the server 12 via the network 16, and writes data to the server 12 and reads data from the server 12. The on-site terminal device 13 also obtains information from the server 12, sends surveying instructions to the surveying instrument terminal device 11, and transmits surveying results to the server 12 via the network 16.

[0022] The position detection device 14 also includes a GNSS device (Global Navigation Satellite System) and a GPS device (Global Positioning System). Here, the GNSS device includes a GNSS receiver and a GNSS communication unit. The GNSS receiver is a navigation signal receiving device with an integrated antenna. The GNSS receiver can acquire its own position by receiving a navigation signal transmitted from a navigation satellite and measuring the transmission time of the navigation signal to perform positioning. Furthermore, the GNSS receiver converts the received navigation signal into an electrical signal and transmits this electrical signal as positioning data to the user terminal device 13 via the GNSS communication unit.

[0023] The office terminal device 15 is a commonly used computer, and includes, for example, a desktop terminal device, a mobile terminal device with a touch panel, a tablet terminal device, a wearable terminal device, and is a terminal device installed in an office, a factory, etc. The office terminal device 15 accesses the server 12 via the network 16, and writes data to the server 12 and reads data from the server 12.

[0024] In addition, network 16 includes wireless communication networks such as a LAN (Local Area Network) via a Wi-Fi (registered trademark) access point, a WAN (Wide Area Network) via a wireless base station, a third generation (3G) communication method, a fourth generation (4G) communication method such as LTE, a fifth generation (5G) or later communication method, Bluetooth (registered trademark), and a specific low power wireless method.

[0025] The surveying instrument terminal device 11, the server 12, the on-site terminal device 13, and the office terminal device 15 each include an input unit for inputting instructions, a storage unit for storing information, and a display unit for displaying information. The surveying instrument 10, the surveying instrument terminal device 11, the server 12, the on-site terminal device 13, and the office terminal device 15 each include a built-in CPU, ROM, RAM, etc. (not shown), and the CPU uses the RAM as a working area, for example, to execute programs stored in the ROM, etc. The CPU also executes programs to realize the functions of each part described below.

[0026] Next, the configuration and execution procedure according to the embodiment of the present invention will be described with reference to Figures 2 and 3. First, a user starts software in an office terminal device 15 at a base such as an office, inputs identification information of multiple target points 2 installed at a surveying site and the set coordinates of the target points in a geographic coordinate system that have been measured in advance, and issues a command to register them. Then, the registration control unit 101 of the office terminal device 15 registers the identification information of the multiple target points 2 and the set coordinates of the target points 2 in a predetermined registration database in association with each other (Figure 3: S101).

[0027] Here, the identification information of the target point 2 means information that can uniquely identify the target point 2, and can include, for example, the name of the target point 2, the site name, number, management information, user name, measurement date, etc., and can be information that the user sets appropriately depending on the type of target point 2 at the site.

[0028] There is no particular limitation on the registration method of the registration control unit 101. For example, as shown in Fig. 4A, when a user uses the operation unit of the office terminal device 15 to input identification information (e.g., "A01") of a first target point 2 among a plurality of target points 2 (e.g., four) and setting coordinates {e.g., Sa01 (Xa01, Ya01, Za01)} of the first target point 2 and selects a registration key, the registration control unit 101 of the office terminal device 15 accesses the server 12 and refers to a registration database 400 stored in advance in the server 12.

[0029] 4A, the registration database 400 stores registration identification information 401, registration setting coordinates 402, and registration measurement coordinates 403 in association with each other. The registration control unit 101 stores the input identification information ("A01") of the first target point 2 in the registration identification information 401 of the registration database 400, and stores the input setting coordinates {Sa01 (Xa01, Ya01, Za01)} of the first target point 2 in the registration setting coordinates 402 of the registration database 400. This completes the registration of the first target point 2.

[0030] Then, the user repeats the registration of the identification information and the set coordinates for the number of target points 2 to be measured. For example, when the user inputs the identification information (e.g., “A02”) of the second target point 2 and the set coordinates {e.g., Sa02 (Xa02, Ya02, Za02)} of the second target point 2 and selects the registration key, the registration control unit 101 stores the input identification information (“A02”) of the second target point 2 in the registered identification information 401 of the registration database 400, and stores the input set coordinates {Sa02 (Xa02, Ya02, Za02)} of the second target point 2 in the registered set coordinates 402 of the registration database 400. The user also performs the same operation for the identification information (e.g., "A03") of the third target point 2, the set coordinates {e.g., Sa03 (Xa03, Ya03, Za03)} of the third target point 2, and the identification information (e.g., "A04") of the fourth target point 2, and the set coordinates {e.g., Sa04 (Xa04, Ya04, Za04)} of the fourth target point 2. Then, the registration control unit 101 associates and stores the identification information ("A03") of the third target point 2, the set coordinates {Sa03 (Xa03, Ya03, Za03)} of the third target point 2, the identification information ("A04") of the fourth target point 2, and the set coordinates {Sa04 (Xa04, Ya04, Za04)} of the fourth target point 2. This allows the user to register the target point 2 to be measured.

[0031] In Fig. 4A, the registration control unit 101 is provided in the office terminal device 15, but this is not limiting, and for example, as shown in Fig. 2, the registration control unit 101 may be provided in the field terminal device 13 carried by the user. In that case, the user causes the registration control unit 101 of the field terminal device 13 to perform the registration process.

[0032] Now, when the registration control unit 101 has completed the registration of the target point 2, the user takes the surveying instrument 10, the surveying instrument terminal device 11, the on-site terminal device 13, and the position detection device 14 and goes to the surveying site where the target point 2 is located. Then, when the user starts the software of the on-site terminal device 13, the acquisition control unit 102 of the on-site terminal device 13 displays a search screen on the display unit of the on-site terminal device 13 and accepts the selection of a search key for searching for the target point 2 (FIG. 3: S102).

[0033] Here, there is no particular limitation on the search screen 404. For example, as shown in Fig. 4B, the search screen 404 displays a title 405 indicating a search (e.g., "Search"), a comment 406 indicating the content of the search (e.g., "Do you want to search for identification information of the target point to be measured?"), a search key 407, and an end key 408. This allows the user to view the search screen 404 and select the search key 407 at a predetermined timing.

[0034] Now, when the user moves around looking for the target point 2 to be measured, approaches the target point 2 to be measured (e.g., "A01") and selects the search key 407 (FIG. 3: S102 YES), the acquisition control unit 102 accepts the selection of the search key 407. Then, the acquisition control unit 102 acquires the current point coordinates of the on-site terminal device 13 in the geographic coordinate system using the position detection device 14 provided close to the on-site terminal device 13 (FIG. 3: S103).

[0035] Here, there is no particular limitation on the acquisition method of the acquisition control unit 102. For example, as shown in FIG. 4B, when the position detection device 14 is a GNSS device or a GPS device, the acquisition control unit 102 communicates with the position detection device 14 provided in the vicinity of the on-site terminal device 13, and causes the position detection device 14 to receive a position information signal (for example, a GNSS signal, a GPS signal) from a GNSS satellite or a GPS satellite. Then, the acquisition control unit 102 acquires the position information signal received by the position detection device 14, regards the current point coordinate of the position detection device 14 as the current point coordinate of the on-site terminal device 13, and acquires the current point coordinate {P1(Xp1, Yp1, Zp1)} of the on-site terminal device 13 in the geographic coordinate system from the acquired position information signal. This makes it possible to immediately acquire the current coordinate by utilizing the position detection device 14.

[0036] If the user does not select the search key 407 but instead selects the end key 408 (FIG. 3: NO in S102), the acquisition control unit 102 will erase the search screen 404 and end the process.

[0037] Now, when the acquisition control unit 102 completes the acquisition, the search control unit 103 of the on-site terminal device 13 then searches for identification information of the nearby target point 2 that is closest to the current point coordinate (P1) of the on-site terminal device 13 based on the acquired current point coordinate (P1) of the on-site terminal device 13 and the set coordinates ("Sa01", "Sa02", "Sa03", ...) of the identification information of each target point 2 in the registration database 400 (Figure 3: S104).

[0038] Here, there is no particular limitation on the search method of the search control unit 103. For example, the search control unit 103 judges whether or not there is identification information of a target point 2 having set coordinates included in a search area including the current point coordinates (P1) of the on-site terminal device 13. Then, if the result of the judgment is that there is no identification information of a target point 2 having set coordinates included in the search area, the search control unit 103 displays an error screen that prompts the user to approach the target point. Also, if the result of the judgment is that there is identification information of a target point 2 having set coordinates included in the search area, the search control unit 103 searches for the identification information of the target point 2 that exists as identification information of a nearby target point 2.

[0039] Specifically, as shown in Fig. 5A, the search control unit 103 calculates a search circle C centered on the current point coordinates (P1) of the on-site terminal device 13 and configured with a preset search radius R (m). Next, the search control unit 103 accesses the server 12 and refers to the registration database 400 of the server 12. Here, the registration database 400 stores the identification information ("A01", "A02", ...) of the target point 2 previously registered by the user and the set coordinates ("Sa01", "Sa02", ...) of the target point 2 in association with each other.

[0040] Therefore, the search control unit 103 compares the coordinates that make up the search circle C with the set coordinates for each identification information of the target point 2 in the registration database 400, and determines whether or not there is identification information having set coordinates that are included in the search circle C. Here, the set coordinates of the identification information of the target point 2 being included in the search circle C means, for example, that the XY coordinate values ​​of the set coordinates of the identification information of the target point 2 in the geographic coordinate system are present inside the XY coordinate values ​​that make up the search circle C.

[0041] At this time, for example, as shown in Fig. 5A, the user is too far away from all the target points 2, and there is no nearby target point closest to the position detection device 14 (on-site terminal device 13). Therefore, as a result of the judgment, the search control unit 103 judges that there is no identification information having set coordinates included in the search circle C (Fig. 3: S104 NO). In this case, the search control unit 103 displays an error screen on the display unit of the on-site terminal device 13.

[0042] Here, there is no particular limitation on the error screen 500, but for example, as shown in Fig. 5A, a title 501 indicating the error (e.g., "Error"), a comment 502 indicating the content of the error (e.g., "Please approach the target point to be measured"), and a search key 503 are displayed. This allows the user to confirm that he or she is not currently approaching the target point 2 to be measured.

[0043] In FIG. 5A, the search control unit 103 selects a search circle C with a predetermined search radius R (m) centered on the current point coordinate (P1) of the on-site terminal device 13 as the search area, but the search area may be of another shape. For example, as shown in FIG. 5A, the search control unit 103 may calculate a search square S with a predetermined search length L=2*R(m) centered on the current point coordinate (P1) of the on-site terminal device 13. In addition, the setting coordinates of the target point 2 being included in the search square S means, for example, that the XY coordinate values ​​of the setting coordinates of the target point 2 in the geographic coordinate system are present inside the XY coordinate values ​​constituting the search square S. Furthermore, the shape of the search area is not limited to a square, and may be a rectangle, a polygon, an ellipse, or the like.

[0044] Now, the user who has seen the error screen 500 searches again for the target point 2 to be measured, and for example, as shown in FIG. 5B, the user approaches the first target point 2 (identification information "A01"). At that time, when the user approaches the second target point 2 (identification information "A02") close to the first target point 2, and selects the search key 503, the search control unit 103 accepts the selection of the search key 503. Then, the acquisition control unit 102 returns to S103 and acquires the current point coordinates {P2(Xp2, Yp2, Zp2)} of the on-site terminal device 13 in the geographic coordinate system using the position detection device 14 (FIG. 3: S103). Then, the search control unit 103 searches for identification information of the nearby target point 2 that is closest to the current point coordinate (P2) of the on-site terminal device 13 based on the acquired current point coordinate (P2) of the on-site terminal device 13 and the set coordinates of each target point 2 in the registration database 400 ("Sa01", ...) (Figure 3: S104).

[0045] Here, if the user thinks that he is approaching a first target point 2 (identification information "A01"), but in the geographic coordinate system, the current point coordinate (P2) of the on-site terminal device 13 is closest to the set coordinate ("Sa01") of a second target point 2 (identification information "A02") that is close to the first target point 2, as shown in Figure 5B, both the set coordinates of the identification information "A01" of the first target point 2 and the set coordinates of the identification information "A02" of the second target point 2 are included within the search circle C, so the search control unit 103 determines that there are two identifications having set coordinates included within the search circle C.

[0046] Here, if the search control unit 103 determines that there are multiple identification information of target points 2 having set coordinates that fall within the search circle C, it calculates, for example, the distance between the set coordinates of the existing target point 2 and the current point coordinates (P2) of the on-site terminal device 13 for each existing target point 2, and searches for the identification information of the target point 2 with the shortest distance as the identification information of a nearby target point 2.

[0047] Specifically, the search control unit 103 calculates a first distance Da01 between the current point coordinate (P2) of the on-site terminal device 13 and the set coordinate "Sa01" of the identification information "A01" of the first target point 2, and a second distance "Da02" between the current point coordinate (P2) of the on-site terminal device 13 and the set coordinate "Sa02" of the identification information "A02" of the second target point 2, compares the first distance "Da01" with the second distance "Da02", and searches for the second target point 2 with the shortest second distance "Da02" as the nearby target point 2. That is, as a result of the search, the search control unit 103 searches for the identification information "A02" of the second target point 2 as the identification information of the nearby target point 2 (FIG. 3: S104 YES).

[0048] Furthermore, if the search control unit 103 determines that there is one piece of identification information whose set coordinates are included in the search circle C, it will search for the identification information of the one existing target point 2 as identification information of a nearby target point 2 (Figure 3: S104 YES).

[0049] Now, when the search control unit 103 searches for the identification information of the nearby target point 2, the display control unit 104 of the on-site terminal device 13 displays the identification information ("A02") of the searched nearby target point 2 (second target point 2), the measurement key of the nearby target point 2, and a re-search key for searching for other nearby target points 2 (Figure 3: S105).

[0050] Here, there is no particular limitation on the display method of the display control unit 104. For example, the display control unit 104 displays, on the display unit of the on-site terminal device 13, a confirmation screen that displays the identification information ("A02") of the nearby target point 2 (second target point 2), a measurement key, and a re-search key.

[0051] Here, there is no particular limitation on the confirmation screen 504, but for example, as shown in Fig. 5B, a title 505 indicating confirmation (e.g., "Confirm"), a comment 506 indicating the content of the confirmation (e.g., "Is the target point to be measured [A02]?" including the identification information of the nearby target point 2), a measurement key 506, and a re-search key 507 are displayed. This allows the user to confirm the identification information of the nearby target point 2 ("A02").

[0052] Now, in a surveying site where multiple target points 2 exist, it may be difficult to know where each target point 2 is located, and particularly when two or more target points 2 are close to each other, it may be difficult for the user to identify which target point 2 is to be measured. In such a case, the user can approach the target point 2 and check the identification information of the nearby target point 2 on the confirmation screen 504, so that the target point 2 to be measured can be properly recognized. Furthermore, by the user measuring the target point 2 while checking the confirmation screen 504, it is possible to prevent the measurement error of measuring the same target point 2 twice, and multiple target points 2 can be measured efficiently.

[0053] Furthermore, if the survey site is large, if there is no predetermined search circle C determination, the nearby target point 2 will be searched for even if the user and the target point 2 are extremely far away, and the identification information of the nearby target point 2 will be displayed even though the user does not recognize the target point 2. This will cause a gap between the user's recognition and the display of the identification information of the nearby target point 2, confusing the user. Therefore, by providing a predetermined search circle C (search area) determination, the user can first check whether or not he or she has entered a search area close to the target point 2, and since the user recognizes the target point 2, the identification information of the nearby target point 2 will be confirmed, and the user's recognition will match the display of the identification information of the nearby target point 2, allowing the user to properly recognize the nearby target point 2.

[0054] If the length of the search area corresponds to the distance between two of the multiple target points 2, for example, then only one target point 2 can be included in the search area, and the user can search for the desired target point 2 while checking the identification information of the single target point 2 displayed. Here, since the distance between two of the multiple target points 2 changes depending on the type of surveying site, it is preferable that the user can, for example, appropriately design the length of the search area depending on the type of surveying site.

[0055] Now, suppose that the user checks the confirmation screen 504, determines that the identification information ("A02") of the displayed nearby target point 2 is not the desired measurement target (e.g., the first measurement target), and approaches the first target point 2 (identification information "A01") of the first measurement target again. Then, when the user selects the re-search key 507 on the confirmation screen 504, the display control unit 104 accepts the selection of the re-search key 507. Then, the re-search control unit 105 of the on-site terminal device 13 reacquires the current coordinates of the on-site terminal device 13 and searches again for the nearby target point 2 (FIG. 3: S106 YES).

[0056] Here, there is no particular limitation on the re-search method of the re-search control unit 105. For example, the re-search control unit 105 returns to S103 and instructs the acquisition control unit 102 to re-acquire, and the acquisition control unit 102 acquires the current point coordinate {P3 (Xp3, Yp3, Zp3)} of the on-site terminal device 13 in the geographic coordinate system using the position detection device 14 (FIG. 3: S103). Also, the re-search control unit 105 instructs the search control unit 105 to search again, and the search control unit 103 searches for identification information of the nearby target point 2 closest to the current point coordinate (P3) of the on-site terminal device 13 based on the acquired current point coordinate (P3) of the on-site terminal device 13 and the set coordinates ("Sa01", . . . ) of each target point 2 in the registration database 400 (FIG. 3: S104).

[0057] Here, if the user is closer to the first target point 2 (identification information "A01") than the second target point 2 (identification information "A02"), as shown in Figure 6A, the search control unit 103 determines that there are two set coordinates that are included in the search circle C, and searches for the identification information of the first target point 2 (identification information "A01") as the nearby target point 2 closest to the position detection device 14 (on-site terminal device 13) (Figure 3: S104 YES).

[0058] In this case, the display control unit 104 displays the identification information ("A01") of the searched nearby target point 2 (first target point 2), the measurement key, and the re-search key, as described above (Figure 3: S105).

[0059] Here, the display control unit 104 will display a confirmation screen 600, which, as shown in FIG. 6A, displays a title 601 ("Confirm"), a comment 602 (for example, "Is the target point to be measured [A01]?" including the identification information of the nearby target point 2), a measurement key 603, and a search again key 604. This allows the user to check the identification information of the target point 2 closest to the user by moving around and selecting the search again key 604. Also, by displaying the confirmation screen 600 multiple times, the user can find the desired target point 2.

[0060] Here, for example, if the identification information of the displayed target point 2 is not the identification information desired by the user, the user moves again to the target point 2 having the desired identification information and selects the re-search key 604. Then, the display control unit 104 returns to S103 again, and by repeating the processes from S103 to S105, the user can arrive at the identification information of the desired target point 2.

[0061] On the other hand, if the displayed identification information of the target point 2 is the identification information desired by the user, the user selects the measurement key 603 (FIG. 3: S106 NO), and the display control unit 104 accepts the selection of the measurement key 603. Then, the measurement control unit 106 of the on-site terminal device 13 aims the three-dimensional surveying instrument 10 at the nearby target point 2 based on the set coordinate of the nearby target point 2 ("Sa01"), and measures the measurement coordinates of the target point 2 in the geographic coordinate system {for example, Ma01 (Xa01, Ya01, Za01)} (FIG. 3: S107).

[0062] Here, there is no particular limitation on the measurement method of the measurement control unit 106. For example, the measurement control unit 106 displays a measurement screen on the display unit of the on-site terminal device 13. There is no particular limitation on the measurement screen 605, but for example, as shown in Fig. 6B, the measurement screen 605 displays a title 606 indicating distance measurement (e.g., "distance measurement"), a comment 607 indicating the content of distance measurement (e.g., "do you want to measure distance?"), an OK key 608, and a cancel key 609. This allows the user to confirm whether or not to measure distance.

[0063] Here, when the user selects the cancel key 609, the measurement control unit 106 accepts the selection of the cancel key 609, and returns to S106, and the display control unit 104 again displays the confirmation screen 600. This allows the user to return to the previous screen if he or she mistakenly selects the measurement key 603.

[0064] On the other hand, when the user selects the OK key 608, the measurement control unit 106 accepts the selection of the OK key 608, communicates with the surveying instrument terminal device 11, and, as shown in FIG. 6B, uses the set coordinates ("Sa01") of the nearby target point 2 to rotate the telescope 101 of the surveying instrument 10 relative to the main body unit 100, and aligns the telescope 101 to face the nearby target point 2.

[0065] Here, when the surveying instrument 10 has its own coordinates in the geographic coordinate system {e.g., T0 (X0, Y0, Z0)} (mechanical coordinates, mechanical point) set, the measurement control unit 106 aims the telescope 101 of the surveying instrument 10 at the nearby target point 2 based on the positional relationship between the set coordinates ("Sa01") of the nearby target point 2 and the mechanical coordinates ("T0") of the surveying instrument 10. On the other hand, when the mechanical coordinates ("T0") are not set in the surveying instrument 10, the measurement control unit 106 has the user set the mechanical coordinates ("T0") of the surveying instrument 10, and then aims the telescope 101 of the surveying instrument 10 at the nearby target point 2 based on the positional relationship between the set coordinates ("Sa01") of the nearby target point 2 and the mechanical coordinates ("T0") of the surveying instrument 10.

[0066] Then, the measurement control unit 106 transmits a measurement command to the surveying instrument terminal device 11, thereby causing the surveying instrument 10 to measure the measurement coordinates {for example, Ma01 (Xa01, Ya01, Za01)} of the target point 2 in the geographic coordinate system. Here, if a target (for example, a reflecting prism or a target sheet) is installed at the nearby target point 2, the surveying instrument 10 measures the distance in a predetermined mode using the target. By providing a target, the surveying instrument 10 can measure the measurement coordinates ("Ma01") of the nearby target point 2 with high accuracy. On the other hand, if nothing is installed at the nearby target point 2, the surveying instrument 10 measures the distance in a non-prism mode. In this case, the user may approach the surveying instrument 10 and adjust the collimation to the nearby target point 2 so that the measurement coordinates ("Ma01") of the nearby target point 2 can be measured with high accuracy.

[0067] In this way, the user can measure the measurement coordinates ("Ma01") of the nearby target point 2 of the desired identification information. In particular, in the present invention, by using the set coordinates ("Sa01") of the nearby target point 2, the collimation of the surveying instrument 10 can be controlled even if the user is away from the surveying instrument 10, so that the user can obtain the measurement coordinates of the desired target point 2 by installing the surveying instrument 10 in a specific location, walking around multiple target points 2, and selecting the measurement key 603 or the OK key 608. As a result, the user can complete the survey by himself, and the measurement can be performed efficiently.

[0068] Now, when the measurement control unit 106 completes the measurement, the associated control unit 107 of the on-site terminal device 13 stores the measurement coordinates ("Ma01") of the measured nearby target point 2 in association with the identification information ("A01") of the nearby target point 2 in the registration database 400 (Figure 3: S108).

[0069] Here, there is no particular limitation on the association method of the association control unit 107. For example, as shown in Fig. 7A, the association control unit 107 accesses the server 12 and refers to the registration database 400 of the server 12. Then, in the registration database 400, registered identification information 401, registered setting coordinates 402, and registered measurement coordinates 403 are stored in association with each other.

[0070] Therefore, the association control unit 107 identifies the identification information ("A01") of the searched first target point 2 from the registered identification information 401 of the registration database 400, and stores the measurement coordinates ("Ma01") of the measured target point 2 in the registered measurement coordinates 403 of the identified registered identification information 401. This enables the user to associate the measurement coordinates ("Ma01") of the measured target point 2 with the identification information ("A01") of the confirmed first target point 2.

[0071] Furthermore, by associating the identification information ("A01") of the first target point 2 with the previously registered set coordinates ("Sa01") of the first target point 2 and the measured coordinates ("Ma01") of the measured target point 2, it is possible to check, for example, whether the measurement coordinates ("Ma01") of the first target point 2 have moved relative to the set coordinates ("Sa01") or remain stationary.

[0072] Furthermore, if the first target point 2 is, for example, a reference point that serves as the basis for surveying, the difference (difference) between the set coordinate ("Sa01") of the reference point and the measurement coordinate ("Ma01") (for example, Ca01=Ma01-Sa01) can be calculated as a correction value (correction value) by the current measurement. Then, by using the correction value for the measurement coordinate of the target point 2 to be measured next, the measurement coordinate can be corrected (corrected), so that the measurement coordinate of the target point 2 can be measured with higher accuracy.

[0073] Now, when the association control unit 107 completes the association of the measurement coordinates ("Ma01"), for example, a save screen is displayed on the display unit of the on-site terminal device 13. Here, the save screen 700 is not particularly limited, but for example, as shown in FIG. 7B, the save screen 700 displays a title 701 (e.g., "Saved") indicating the save, a comment 702 indicating the contents of the save (e.g., "The measured value has been recorded in [A01]. Continue measuring?" including the identification information of the nearby target point 2, a continue key 703, and an end key 704. This allows the user to confirm that the measurement coordinates have been stored in the identification information of the target point 2.

[0074] Here, when the user selects the continue key 703 to measure the measurement coordinates of the target point 2 to be next measured (FIG. 3: S109 NO), the related control unit 107 accepts the selection of the continue key 703 and returns to S102, and the acquisition control unit 102 displays a search screen on the display unit of the on-site terminal device 13 (FIG. 3: S102).

[0075] Then, as shown in FIG. 7B, the user approaches the second target point 2 (identification information "A02") to be measured next and selects the search key 407 (FIG. 3: S102 YES), the acquisition control unit 102 acquires the current point coordinate (P4) of the on-site terminal device 13 in the geographic coordinate system (FIG. 3: S103), and the search control unit 103 searches for the identification information of the nearby target point 2 closest to the current point coordinate (P4) of the on-site terminal device 13 (FIG. 3: S104). Here, when the search control unit 103 searches for the identification information "A02" of the second target point 2 as the identification information of the nearby target point 2 (FIG. 3: S104 YES), the display control unit 104 displays the identification information ("A02") of the searched nearby target point 2 (second target point 2), the measurement key 603 of the nearby target point 2, and the re-search key 604 for searching for other nearby target points 2 (FIG. 3: S105). Since the identification information of the target point 2 displayed this time is the identification information desired by the user, the user selects the measurement key 603 (FIG. 3: S106 NO), and the measurement control unit 106 aims the three-dimensional surveying instrument 10 at the nearby target point 2 based on the set coordinates ("Sa02") of the nearby target point 2, and measures the measurement coordinates ("Ma02") of the target point 2 in the geographic coordinate system (FIG. 3: S107).Then, the association control unit 107 stores the measured measurement coordinates ("Ma02") of the nearby target point 2 in the registration database 400 in association with the identification information ("A02") of the nearby target point 2 (FIG. 3: S108).

[0076] That is, by repeating the above-mentioned processes from S102 to S108, it is possible to measure the measurement coordinates of a plurality of target points 2. For example, as shown in FIG. 8A, the user can move around a plurality of target points 2, check the identification information of nearby target points 2, and select the measurement key 603 to measure the measurement coordinates of the desired target points 2 one after another. Then, as shown in FIG. 8B, the user can store the measurement coordinates of the measured target points 2 in the identification information of the target points 2 one after another. This makes it possible to properly recognize and efficiently measure even if there are a plurality of target points 2 without erroneous measurement.

[0077] Furthermore, by storing the measurement coordinates of the target point 2 in the registration database 400, for example, another user (such as an administrator) can access the registration database 400 of the server 12 using the office terminal device 15 and check the registration database 400. This allows other users to remotely check the progress of the user's measurement.

[0078] On the other hand, when measurement of the measurement coordinates of all target points 2 is completed, in S109, when the user selects the end key 704 on the save screen 700 (Figure 3: S109 YES), the related control unit 107 will erase the save screen 700 and end the processing. EXAMPLES

[0079] The present invention will be specifically described below with reference to examples and comparative examples, but the present invention is not limited thereto.

[0080] First, a surveying system 1 was constructed as an embodiment based on Figs. 1-8. In this case, a GNSS device was adopted as the position detection device 14. Next, in order to demonstrate the effect of the embodiment, a user set a plurality of target points 2 in a predetermined measurement site and measured the measurement coordinates of each of the target points 2. In this case, the coordinates were set in a two-coordinate system of X coordinates and Y coordinates.

[0081] As shown in Fig. 9, at a specific survey site, a user sets a target point 2 with identification information "No.1" as a reference point and registers the set coordinates of the target point 2 with identification information "No.1" in the registration database. In addition, the user sets the target points 2 with identification information "No.2" to "No.21" as target points 2 to be measured and registers the set coordinates of the target point 2 with identification information "No.1" in the registration database.

[0082] Then, the user brings the surveying instrument 10, the surveying instrument terminal device 11, the on-site terminal device 13, and the position detection device 14 to the surveying site, installs the surveying instrument 10, sets the machine coordinates, and first approaches the target point 2 (reference point) with identification information "No. 1" and measures its measurement coordinates. Next, the user moves to an area where multiple target points 2 are concentrated, approaches the multiple target points 2 in the order of identification information "No. 2" to "No. 21", and measures the measurement coordinates of each target point 2 while checking the identification information of each target point 2.

[0083] As a result, in the embodiment, the identification information of the nearby target point 2 is displayed by approaching the target point 2 to be measured, so the user can properly recognize the multiple target points and measure them correctly. In addition, even though there were 21 target points 2, the user was able to measure quickly and perform efficient measurement work.

[0084] As shown in FIG. 10, the difference between the set coordinates and the measured coordinates of the reference point was −0.002 m for the X coordinate and 0.015 m for the Y coordinate, and even though the difference was extremely small, it was possible to confirm it with high accuracy. The difference between the set coordinates and the measured coordinates of other target points 2 was similar, but is omitted here. The difference between the current coordinates and the measured coordinates was less than 0.3 m for the X coordinate and less than 0.5 m for the Y coordinate, and it was found that the user can properly measure the measured coordinates of the target point 2 by approaching the target point 2 within less than 1 m. If the length of the search area is set under these conditions, it would be preferable to set it within the range of 0.5 m to 1.0 m, for example. [Industrial Applicability]

[0085] As described above, the surveying system and surveying method of the present invention are useful in fields such as measurement of general measurement objects, buildings, machinery and equipment, ground, roads, vehicles, railways, etc., civil engineering, and surveying, and are effective as a surveying system and method that can properly recognize multiple target points and measure them efficiently. [Explanation of symbols]

[0086] 1. Surveying System 10 Surveying equipment 11 Terminal devices for surveying instruments 12 Server 13 On-site terminal equipment 14 Position detection device 15 Office terminal equipment 16 Network 101 Registration control section 102 Acquisition control section 103 Search control section 104 Display control unit 105 Re-search control section 106 Measurement control section 107 Related Control Units

Claims

1. a registration control unit that registers, in a predetermined registration database, identification information including a name of a target point among a plurality of target points and a set coordinate of the target point in a geographic coordinate system that has been measured in advance; an acquisition control unit that acquires a current point coordinate of the user terminal in a geographic coordinate system using a position detection device provided near the user terminal at a surveying site; a search control unit that determines whether or not there is identification information of a target point having set coordinates included within a predetermined search area including the acquired current coordinates of the user terminal within the surveying site, and if the result of the determination shows that there is no identification information of a target point having set coordinates included within the search area, displays an error screen prompting the user to approach the target point, and if the result of the determination shows that there is identification information of a target point having set coordinates included within the search area, searches for the identification information of the existing target point as identification information of a nearby target point; a display control unit that displays identification information of the searched nearby target point, a measurement key of the nearby target point, and a re-search key of the nearby target point; a re-search control unit that, when the identification information of the nearby target point is not a desired target point, re-acquires the current point coordinates of the user terminal and searches for the nearby target point again when the re-search key is selected; a measurement control unit which, when the identification information of the nearby target point is a desired target point, points a three-dimensional surveying instrument at the nearby target point based on the set coordinates of the nearby target point when the measurement key is selected, and measures the measurement coordinates of the target point in a geographic coordinate system; an association control unit that, when the measurement coordinates of the nearby target point are measured, stores the measured measurement coordinates of the nearby target point in the registration database in association with identification information of the nearby target point; A surveying system comprising:

2. When the search control unit determines that there are multiple identification information of target points having set coordinates included within the search area, it calculates the distance between the set coordinates of the target points and the current coordinates of the user terminal for each of the target points, and searches for the target point with the shortest distance as the nearby target point. The surveying system according to claim 1 .

3. The shape of the search area includes either a search circle having a center point at the current point coordinates of the user terminal and a predetermined search radius, or a search square having a center point at the current point coordinates of the user terminal and a predetermined search length. The surveying system according to claim 1 .

4. a registration control step of registering, in a predetermined registration database, identification information including a name of a target point among a plurality of target points and a set coordinate of the target point in a geographic coordinate system that has been measured in advance; an acquisition control step of acquiring a current point coordinate of the user terminal in a geographic coordinate system using a position detection device provided in the vicinity of the user terminal at the surveying site; a search control process for determining whether or not there is identification information of a target point having set coordinates included within a predetermined search area including the acquired current coordinates of the user terminal within the surveying site, and if the result of the determination shows that there is no identification information of a target point having set coordinates included within the search area, displaying an error screen prompting the user to approach the target point, and if the result of the determination shows that there is identification information of a target point having set coordinates included within the search area, searching for the identification information of the existing target point as identification information of a nearby target point; a display control step of displaying identification information of the searched nearby target point, a measurement key of the nearby target point, and a re-search key of the nearby target point; a re-search control step of reacquiring the current point coordinates of the user terminal and re-searching for the nearby target point when the identification information of the nearby target point is not the desired target point and the re-search key is selected; a measurement control step of, when the identification information of the nearby target point is a desired target point, directing a three-dimensional surveying instrument to the nearby target point based on the set coordinates of the nearby target point when the measurement key is selected, and measuring the measurement coordinates of the target point in a geographic coordinate system; an association control step of, when the measurement coordinates of the nearby target point are measured, storing the measured measurement coordinates of the nearby target point in the registration database in association with identification information of the nearby target point; A surveying method comprising:

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