Coordinate coordination system and coordinate coordination method

Abstract

To easily and accurately grasp coordinates representing a position where a total station is installed.SOLUTION: An information processing apparatus includes a positioning unit that measures a current position in the vicinity of a total station installed for a measurement point, a storage unit that stores measurement point identification information for identifying the measurement point and measurement point position data indicating a position of the measurement point, and a measurement point coordinate acquisition unit that reads measurement point coordinate information of the position of the measurement point corresponding to the current position indicated by the measured positioning result from the storage unit.SELECTED DRAWING: Figure 1

Description

[Technical Field]

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

[0002] When surveying a construction site, a total station may be used. One example of a surveying method using a total station is the instrument point backsight method. In the instrument point backsight method, installation and surveying are carried out using two known points (instrument point, backsight) whose coordinates are known in advance. Of the two known points, a reference point (hereinafter also referred to as measurement) prepared in advance may be used as the instrument point. A measurement point is a reference point used when conducting a survey. A measurement point may have a rivet driven into it. Conventionally, the instrument point is set in the total station by using the rivet representing the measurement point as a clue to install the total station on the measurement point, and then inputting into the total station the coordinate information corresponding to the measurement point where the total station is installed. The coordinate information corresponding to the measurement point to be input into the total station is obtained by, for example, identifying which of the measurement points listed on the floor plan of the construction site is the measurement point where the total station has been installed, confirming the number individually assigned to that measurement point, and then identifying the coordinates corresponding to that number by referring to a correspondence table, etc. The surveyor then inputs the identified coordinates into the total station by operating buttons. Patent Document 1 discloses a system for conducting surveying using measuring instruments such as a total station and a laser scanner. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 2023-144169 Summary of the Invention [Problem to be solved by the invention]

[0004] However, when inputting measurement coordinate information into a total station, it is necessary to identify the measurement point where the total station is installed from a plan view or the like, check the number of the identified measurement point, and then identify the coordinate information corresponding to that number. This requires a lot of effort to identify the coordinate information, and there is a risk of identifying the coordinate information incorrectly.

[0005] The present invention has been made in consideration of the above circumstances, and its purpose is to provide a coordinate linking system and a coordinate linking method that can easily and accurately grasp the coordinates that represent the location where a total station is installed. [Means for solving the problem]

[0006] In order to solve the above-mentioned problems, one aspect of the present invention is a coordinate linking system having a positioning unit that positions a current position in the vicinity of a total station installed relative to a measurement point, a memory unit that stores measurement point identification information that identifies the measurement point and measurement point position data that represents the position of the measurement point, a measurement point coordinate acquisition unit that reads out from the memory unit measurement point coordinate information of the position of the measurement point that corresponds to the current position indicated by the positioning result, and an output unit that outputs the measurement point coordinate information.

[0007] In order to solve the above-mentioned problems, one aspect of the present invention is a coordinate linking method executed by a computer used in a coordinate linking system, which locates a current position in the vicinity of a total station installed relative to a measurement point, and by referring to a memory unit that stores measurement point identification information that identifies the measurement point and measurement point position data that represents the position of the measurement point, reads measurement point coordinate information of the position of the measurement point that corresponds to the current position indicated by the positioning result from the memory unit, and outputs the measurement point coordinate information. [Effects of the Invention]

[0008] As described above, according to the present invention, the coordinates representing the location where the total station is installed can be easily and accurately determined. [Brief explanation of the drawings]

[0009] [Figure 1] 1 is a schematic block diagram showing the configuration of a coordinate linkage system S according to an embodiment of the present invention. [Figure 2] 2 is a schematic functional block diagram illustrating the functions of the coordinate linkage system S. FIG. [Figure 3] FIG. 10 is a diagram illustrating an example of measurement point coordinate information. [Figure 4] 10 is a flowchart illustrating the operation of the coordinate linkage system S. DETAILED DESCRIPTION OF THE INVENTION

[0010] A coordinate link system according to an embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic block diagram showing the configuration of a coordinate linking system S according to an embodiment of the present invention. The coordinate linkage system S includes a total station TS and a terminal device 10 . A total station TS is used to conduct surveys at construction sites. When conducting surveys using the instrument station rearview method, for example, the total station TS can use measurement point P as one of the known points (instrument points). Measurement point P is prepared in advance when roads are designed, etc. In some cases, nails are driven into the measurement point. At construction sites and civil engineering work sites, multiple measurement points P are typically installed at 20m intervals. Another known point is the backsight point.

[0011] The terminal device 10 has a function of measuring its current position based on signals emitted from a plurality of navigation satellites G. For example, the terminal device 10 may be any of a smartphone, a tablet, a notebook computer, and the like. The terminal device 10 is connected to the total station TS wirelessly or via a wire so as to be able to communicate with the total station TS. Here, the terminal device 10 is connected to the total station TS wirelessly. The wireless connection may be, for example, short-range wireless communication, and more specifically, Bluetooth (registered trademark) may be used.

[0012] FIG. 2 is a schematic functional block diagram illustrating the functions of the coordinate linkage system S. The coordinate linkage system S includes a total station TS and a terminal device 10. The terminal device 10 includes a communication unit 101, a storage unit 102, a positioning unit 103, a measurement point coordinate acquisition unit 104, a transmission unit 105, a display unit 106, an input unit 107, and a control unit 108.

[0013] The storage unit 102 stores various types of data. For example, the storage unit 102 stores measurement point identification information that identifies the measurement point, and measurement point coordinate information that includes measurement point position data that indicates the position of the measurement point. FIG. 3 is a diagram illustrating an example of measurement point coordinate information. Of the measurement point coordinate information, the measurement point identification information is identification information that can identify each of the multiple measurement points, and for example, numbers assigned to the multiple measurement points in ascending order are used. Of the measurement point coordinate information, the measurement point position data is coordinates (X, Y, Z) that represent the position of the measurement point in a three-dimensional coordinate system. These coordinates may be determined based on latitude, longitude, and altitude. The storage unit 102 is configured by a storage medium, such as a hard disk drive (HDD), flash memory, electrically erasable programmable read-only memory (EEPROM), random access read / write memory (RAM), read-only memory (ROM), or any combination of these storage media. The storage unit 102 may be, for example, a nonvolatile memory.

[0014] The positioning unit 103 measures the current position of the terminal device 10 based on signals emitted from a plurality of navigation satellites G. For example, the positioning unit 103 measures the current position in the vicinity of a total station installed at a measurement point.

[0015] The measurement point coordinate acquisition unit 104 reads measurement point coordinate information of the position of the measurement point corresponding to the current position indicated by the positioning result from the storage unit 102. For example, the measurement point coordinate acquisition unit 104 reads from the storage unit 102 the measurement point coordinate information of the position closest to the current position (measurement point position data of the measurement point corresponding to the position closest to the current position) from the storage unit 102, among the measurement point position data of multiple measurement points stored in the storage unit 102.

[0016] The transmitting unit 105 transmits the measurement point coordinate information acquired by the measurement point coordinate acquiring unit 104 to the total station TS via the communication unit 101. This makes it possible to link the measurement point coordinate information to the total station.

[0017] The display unit 106 is, for example, a liquid crystal display panel, and can display various types of information. For example, the display unit 106 displays measurement point coordinate information and measurement identification information acquired by the measurement point coordinate acquisition unit 104. By displaying the measurement point coordinate information on the display screen of the display unit 106, the person conducting the survey can obtain the displayed measurement point coordinate information as measurement coordinate information that can be linked to the total station. The person conducting the survey can link the measurement point coordinate information by inputting the displayed measurement point coordinate information into the total station.

[0018] The input unit 107 accepts operation contents input via an input device such as a touch panel, a mouse, or a keyboard. The control unit 108 controls each unit in the terminal device 10 .

[0019] The total station TS receives the measurement point coordinate information transmitted from the terminal device 10 and sets it as information representing the coordinates of the measurement point where the total station is currently installed (coordinates of the instrument point).

[0020] The communication unit 101, positioning unit 103, measurement point coordinate acquisition unit 104, transmission unit 105, display unit 106, input unit 107, and control unit 108 of the terminal device 10 may be configured as a processing unit such as a CPU (Central Processing Unit) or a dedicated electronic circuit. Also, the terminal device 10 may download and execute programs for realizing these functions from a server that stores the programs, thereby realizing the above-mentioned functions. Furthermore, the storage unit 102, the measurement point coordinate acquisition unit 104, and the transmission unit 105 may not be provided in the terminal device 10, but may be mounted on a server communicably connected to the terminal device 10. In this case, the server may be a physical server or a cloud server provided by a cloud computing service.

[0021] Next, the operation of the coordinate linkage system S described above will be explained. FIG. 4 is a flowchart illustrating the operation of the coordinate linkage system S. The person in charge of surveying installs the total station TS at the location of the measurement point to be used as the instrument point. The person in charge also inputs a coordinate linking instruction to the terminal device 10 from the input unit 107 near the installed total station TS. When an instruction to link coordinates is input, the positioning unit 103 of the terminal device 10 measures the current position (step S101). Once the current position is determined, the measurement point coordinate acquisition unit 104 identifies the measurement point coordinate information that is closest to the current position obtained as a result of positioning by referring to the measurement point coordinate information stored in the storage unit 102 (step S102). Here, the positioning unit 103 determines the current position of the terminal device 10 using the GNSS (Global Navigation Satellite System), identifies which measurement point position data, among the measurement point position data included in the measurement point coordinate information stored in the storage unit 102, corresponds to the position closest to the measured current position, and acquires the identified measurement point position data (or measurement point coordinate information) (step S103). This prevents the person in charge from mistakenly recognizing the measurement point identification information assigned to the measurement point and identifying the coordinate information of a measurement point different from the measurement point where the total station TS is installed.

[0022] When the measurement point coordinate information is read, the control unit 108 causes the display unit 106 to display the read measurement point coordinate information (step S104). Here, the control unit 108 causes the display unit 106 to display the measurement point position data and measurement point identification information included in the read measurement point coordinate information. For example, the display unit 106 displays the measurement point coordinate information and the measurement point position data, such as "Measurement Point No. 18 X:X1,Y:Y1,Z:Z1." Here, the control unit 108 may display the measurement point position data on the display unit 106 without displaying the measurement point identification information among the measurement point coordinate information.

[0023] The transmitting unit 105 transmits the measurement point position data to the total station TS via the communication unit 101 (step S105). Here, the transmitting unit 105 may transmit the measurement point position data and measurement point identification information. The total station TS sets the coordinates of known points by taking in the measurement point position data transmitted from the terminal device 10 as instrument points.

[0024] In the embodiment described above, the measurement point position data is transmitted wirelessly from the terminal device 10 to the total station TS, but the measurement point position data displayed on the display unit 106 of the terminal device 10 may also be manually input from a touch panel provided on the liquid crystal display screen of the total station TS while the person in charge checks the data on the display screen.

[0025] Furthermore, the coordinate linkage system S described above can be used with any total station TS regardless of the manufacturer or model of the total station TS.

[0026] Furthermore, according to the embodiment described above, by linking (transmitting) measurement position data to the total station TS via short-range wireless communication such as Bluetooth (registered trademark), the measurement point coordinate information displayed on the device can be automatically transferred to the total station TS, thereby preventing input errors caused by manual input by the person in charge.

[0027] Furthermore, according to the above-described embodiment, the measurement position data of the measurement point closest to the current position of the terminal device 10 is displayed, so that even if the GNSS reception environment is poor and an error of several meters occurs in an environment where the measurement points are installed at intervals of 20 m, the installation intervals of the measurement points are wider than the error, so that even if there is a measurement error due to GNSS, it is possible to avoid using measurement point position data of a measurement point other than the measurement point where the total station TS is installed. This allows accurate measurement point coordinates to be displayed on the terminal device 10 without fail and set in the total station TS.

[0028] There are also devices that attach a GNSS receiver to a total station, set the total station at a desired location, measure the current position determined by the GNSS receiver in millimeters, and set it on the total station. However, in order to directly measure in millimeters using GNSS, a good GNSS reception environment is required, and this is expensive. Therefore, if the GNSS reception environment is not good, there is a problem of reduced measurement accuracy and high implementation costs. In contrast, according to the above-described embodiment, even if the GNSS positioning accuracy has decreased and an error of several meters has occurred, the measurement points are installed at intervals of a certain degree, such as 20 m, which are longer than the GNSS positioning accuracy. Therefore, even if the GNSS positioning accuracy has decreased, by identifying the measurement point closest to the positioned position, it is possible to identify the position of the measurement point where the total station is installed without being affected by the decrease in GNSS positioning accuracy.

[0029] Furthermore, according to the above-described embodiment, it is possible to obtain measurement position data for the measurement point closest to the current location of the terminal device 10. This eliminates the need for a surveyor to identify the number of the measurement point where the total station is installed and then identify the coordinate information corresponding to the identified number by viewing a plan view or various documents, as was conventionally the case. This avoids incorrect identification of measurement point coordinate information and saves the time and effort required to identify the measurement point coordinate information. Furthermore, because the measurement point coordinate information identified in this manner can be displayed on the display unit 106, the surveyor can easily obtain the measurement point coordinate information by bringing the terminal device 10 near the total station and measuring its position, without having to go through the process of identifying the measurement point himself.

[0030] Furthermore, according to the above-described embodiment, the measurement point coordinate information is easily acquired and then transmitted to the total station. This eliminates the need to manually input the measurement point coordinate information into the total station, thereby preventing input errors by the surveyor.

[0031] The terminal device 10 in the above-described embodiment may be implemented by a computer. In this case, a program for implementing the functions may be recorded on a computer-readable recording medium, and the program may be loaded into a computer system and executed. The term "computer system" as used herein includes hardware such as an OS and peripheral devices. The term "computer-readable recording medium" refers to portable media such as flexible disks, optical magnetic disks, ROMs, and CD-ROMs, as well as storage devices such as hard disks built into a computer system. The term "computer-readable recording medium" may also include media that dynamically store programs for a short period of time, such as communication lines used when transmitting programs over a network such as the Internet or a telephone line, or media that store programs for a fixed period of time, such as volatile memory within a computer system serving as a server or client. The program may be a program that implements only a portion of the functions described above, or may be a program that can implement the functions in combination with a program already stored in the computer system, or may be implemented using a programmable logic device such as an FPGA (Field Programmable Gate Array).

[0032] Although an embodiment of the present invention has been described above in detail with reference to the drawings, the specific configuration is not limited to this embodiment, and includes designs within the scope of the gist of the present invention. [Explanation of symbols]

[0033] 10 Terminal Equipment 101 Communications Department 102 Storage section 103 Positioning unit 104 Measurement point coordinate acquisition unit 105 Transmitter 106 Display section 107 Input section 108 Control Unit G Navigation Satellite P station S coordinate linkage system TS Total Station

Claims

1. a positioning unit that measures a current position in the vicinity of a total station installed at a measurement point; a storage unit that stores measurement point identification information that identifies a measurement point and measurement point position data that indicates the position of the measurement point; a measurement point coordinate acquisition unit that reads, from the storage unit, measurement point coordinate information of the position of the measurement point corresponding to the current position indicated by the positioning result; an output unit that outputs the measurement point coordinate information; A coordinate linkage system having:

2. a transmitter that transmits the measurement point coordinate information acquired by the measurement point coordinate acquisition unit to the total station; The coordinate link system according to claim 1 ,

3. The measurement point coordinate acquisition unit Among the measurement point coordinate information, the measurement point coordinate information of the position closest to the current position is read from the storage unit. The coordinate link system according to claim 1 or 2.

4. a display unit that displays the measurement point coordinate information acquired by the measurement point coordinate acquisition unit and measurement identification information; The coordinate link system according to claim 3 , comprising:

5. A coordinate linking method executed by a computer for use in a coordinate linking system, comprising: The current position is measured in the vicinity of a total station installed at the measurement point, By referring to a storage unit that stores measurement point identification information that identifies a measurement point and measurement point position data that indicates the position of the measurement point, measurement point coordinate information of the position of the measurement point that corresponds to the current position indicated by the positioning result is read from the storage unit; Output the measurement point coordinate information Coordinate linkage method.

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