Survey method, survey system, and survey program

Abstract

To provide a survey method, a survey system, and a survey program with which the labor of operators is reduced in importing measurement data from a global navigation satellite system (GNSS) receiver into a computer in static analysis.SOLUTION: Provided is a survey method in which the measured data of survey point coordinates is detected by static observation of global navigation satellite system (GNSS) receivers 21-26 having had measurement data of a plurality of survey points stored therein, and a control unit 4 of a computer 2 performs a baseline vector analysis from the measured data of each survey point imported from the GNSS receivers into a storage unit 3 of the computer 2. The control unit 4 is constituted to execute: a connection step for detecting the plurality of GNSS receivers by short-range wireless communication and automatically connecting to these; a list-up step for listing up the connected GNSS receivers; and a measured data reception step for receiving the measured data from each of the listed GNSS receivers in order.SELECTED DRAWING: Figure 4

Description

[Technical field]

[0001] The present invention relates to a surveying method for performing static analysis on a computer from measurement data of multiple GNSS receivers. [Background technology]

[0002] Paragraph

[0019] of Patent Document 1 discloses a surveying method for acquiring coordinates by static observation using multiple GNSS (Global Navigation Satellite System) receivers. In this surveying method, three or more GNSS receivers are installed at multiple measurement points, coordinate data for each measurement point within a certain period of time is stored in the GNSS receivers based on a static method, and the stored data is imported into a computer to calculate and analyze baseline vectors between the measurement points, thereby carrying out the surveying. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent Application No. 2020-30152 Summary of the Invention [Problem to be solved by the invention]

[0004] In a surveying method based on the static method, a worker would carry the GNSS receiver containing the coordinate data from the measurement point back to a location where an analysis computer was located, connect the GNSS receiver to the computer via a wired connection such as USB, and manually select the necessary coordinate data on the computer before performing baseline analysis.

[0005] However, wired connections between GNSS receivers and computers place a burden on operators because they have to manually connect cables each time, and the operation of manually selecting the required coordinate data also requires operators to check the presence and content of coordinate data on a monitor, etc., and then manually select the required data after determining it, which is time-consuming and labor-intensive for operators.

[0006] An object of the present invention is to provide a surveying method, a surveying system, and a surveying program that eliminate the labor required by an operator when importing measurement data from a GNSS receiver to a computer in the static method. [Means for solving the problem]

[0007] In a surveying method in which measurement data of measurement point coordinates is detected by static observation of a GNSS receiver that is installed at a plurality of measurement points as positioning targets and stores measurement data, and the measurement data is imported from the GNSS receiver into a memory unit of a computer, when importing the measurement data from the plurality of GNSS receivers into the computer, it is desirable that the control unit executes a connection step of detecting and automatically connecting the plurality of GNSS receivers by short-range wireless communication, a listing step of listing the connected GNSS receivers, and a measurement data receiving step of receiving the measurement data from each of the listed GNSS receivers in turn.

[0008] In addition, in the surveying method, it is more desirable that the listing step includes a step of checking whether or not measurement data exists in the GNSS receiver, and a selection step of selecting only GNSS receivers for which measurement data exists and including them in the list.

[0009] Furthermore, in the surveying method, it is more desirable that the measurement data includes a time stamp indicating the time of measurement by the GNSS receiver, the memory unit stores an acquisition time zone that limits the time zone during which the measurement data imported from the GNSS receiver was measured, and the measurement data receiving step includes a time comparison step of comparing the time stamp of the measurement data in the GNSS receiver with the acquisition time zone, and a selection receiving step of selecting and receiving only measurement data whose time stamp matches the acquisition time zone.

[0010] Furthermore, in the above surveying method, it is more desirable that the measurement data includes a group stamp indicating which group multiple GNSS receivers belong to, the memory unit stores an analysis group for analyzing baseline vectors, and the listing step includes a group comparison step of comparing the group stamp of the measurement data in the GNSS receiver with the analysis group, and a selection step of selecting only GNSS receivers whose group stamp matches the analysis group and including them in the list.

[0011] In the surveying method, it is more preferable that the short-range wireless communication is communication using Bluetooth (registered trademark).

[0012] It is also desirable to configure a surveying system for implementing the surveying method, and to construct a surveying program for causing a computer to execute the surveying method. Effect of the Invention

[0013] According to the surveying method of the present invention, when an operator imports multiple GNSS receivers brought back from the measurement point into a computer prior to baseline analysis based on the static method, a GNSS receiver that approaches the computer is automatically connected to the computer via short-range wireless communication, and the measurement data accumulated in the GNSS receiver is automatically imported into the computer, thereby eliminating the operator's import work and reducing the operator's burden.

[0014] Furthermore, according to the surveying method of the present invention, measurement data is imported into a computer only from GNSS receivers in which the measurement data exists, so that the measurement data can be imported more quickly.

[0015] In addition, according to the surveying method of the present invention, the measurement data imported from the GNSS receiver to the computer is limited to only the measurement data measured during the time period required for baseline analysis, which allows the measurement data to be imported more quickly and also eliminates the need for the operator to sort through unnecessary measurement data before baseline analysis after import.

[0016] Furthermore, according to the surveying method of the present invention, even if one GNSS receiver group that has performed static observation in one area and another GNSS receiver group that has performed static observation in another area are brought into the range of communication by the computer at the same time, only the measurement data from the GNSS receiver group that performs baseline analysis first is imported into the computer, and the measurement data from the other GNSS receiver group that has performed measurement in the other area is not imported, thereby preventing the mixing of measurement data across measurement areas. This saves the operator the trouble of carefully examining and selecting the measurement data that has been mixed across measurement areas before the baseline analysis after import.

[0017] Furthermore, according to the surveying method of the present invention, by using Bluetooth (registered trademark) for short-range wireless communication, the GNSS receiver and computer can be automatically connected quickly, enabling rapid data communication.

[0018] Furthermore, according to the surveying system and surveying program of the present invention, by implementing the surveying method of the present invention, it is possible to eliminate the burden on the operator in importing measurement data from the GNSS receiver into a computer. [Brief description of the drawings]

[0019] [Figure 1] 1 is an overall configuration diagram of an embodiment of a surveying system for implementing a surveying method of the present invention; [Diagram 2] An explanatory diagram of the configuration of the GNSS receiver used in the surveying method. [Diagram 3] FIG. 1 is a block diagram showing a first embodiment of a surveying method. [Figure 4] FIG. 11 is a block diagram showing a second embodiment of the surveying method. [Diagram 5] FIG. 11 is a block diagram showing a third embodiment of the surveying method. [Figure 6] FIG. 11 is a block diagram showing a fourth embodiment of the surveying method. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0020] Next, preferred embodiments and examples of the present invention will be described with reference to the drawings.

[0021] Fig. 1 is an overall configuration diagram of a surveying system 1 according to an embodiment of the surveying method of the present invention, and Fig. 2 is a configuration explanatory diagram of each GNSS receiver 21-26 used in the surveying system 1. The surveying system 1 is composed of a computer 2, a GNSS receiver group A (reference symbol 20) consisting of GNSS receivers 21-26 installed at each measurement point for which coordinate data is to be measured, and a GNSS receiver group B (reference symbol 20') consisting of GNSS receivers 21'-26' having the same configuration as the GNSS receivers 21-26. Note that the GNSS receiver group A (reference symbol 20) in Fig. 1 shows a state where it has been brought back to a nearby area where it can communicate with the computer 2 after the measurement is completed, and the GNSS receiver group B (reference symbol 20') shows a state where it continues measuring the measurement point outside the communication range of the computer 2.

[0022] As shown in FIG. 1, a computer 2 includes a storage unit 3, a control unit 4, and a communication unit 6, which are connected together so as to be capable of data communication with each other.

[0023] The storage unit 3 in FIG. 1 is composed of a storage medium such as a memory that stores data, and includes a program storage unit 3a, a GNSS receiver list storage unit 3b, a measurement data storage unit 3c, an acquisition time period storage unit 3d that stores acquisition time period data, and an analysis group storage unit 3e. The control unit 4 is an arithmetic control unit composed of an arithmetic processing unit such as a CPU, and includes a communication detection and control unit 4a, a list generation unit 4b, a coordinate data existence confirmation unit 4c, a time comparison unit 4d, a group comparison unit 4e, and a baseline vector generation unit 4f. The communication unit 6 is a short-range wireless communication device that wirelessly communicates measurement data accumulated in the multiple GNSS receivers 21-26 by Bluetooth (registered trademark). The communication unit 6 is connected to the GNSS receivers 21-26 of the GNSS receiver group A (reference numeral 20) and the GNSS receivers 21'-26' of the GNSS receiver group B (reference numeral 20') that are brought into the communication range. The communication unit 6 may be a wireless LAN (wifi) or the like as long as it is a short-range wireless communication device.

[0024] The GNSS receivers 21-26 constituting the GNSS receiver group A (reference symbol 20) shown in Fig. 1 and the GNSS receivers 21'-26' constituting the GNSS receiver group B (reference symbol 20') all have the same configuration shown in Fig. 2, and all receive satellite radio waves related to position information from four or more GNSS satellites 33. Each of the GNSS receivers 21-26 has a main body unit 27 and a support pole 32 for installing the GNSS receiver at a measurement point. The main body unit 27 has a GNSS receiving unit 28, a measurement data generating unit 29, a GNSS storage unit 30, a communication unit 31 and a timer 34.

[0025] The measurement data generator 29 generates measurement data from the coordinate data of the measurement point received by the GNSS receiver 28, the time stamp, and the group stamp, and stores the measurement data in the GNSS storage unit 30. The time stamp indicates the time when the coordinate data was received by the GNSS receiver, measured by a timer 34, and is added to each piece of received data. The group stamp is a stamp that is determined in advance as to which group the GNSS receivers 21-26 belong, and is stored in the GNSS storage unit 30 for each of the GNSS receivers 21-26 and added to the measured coordinate data.

[0026] The communication units 31 of the GNSS receivers 21-26 in Fig. 2 and the communication units (not shown) of the GNSS receivers 21'-26' are all connected to the communication unit 6 of the computer 2 by short-range wireless communication such as Bluetooth (registered trademark), and transmit and receive data to and from the computer. The program storage unit 3a of the computer 2 in Fig. 1 stores an execution program for causing the computer to carry out the surveying method of the present invention, and the measurement data accumulated in the GNSS storage unit 30 in Fig. 2 is transmitted to the computer 2 via the communication unit 31 (and the communication unit, not shown, of the GNSS receiver group B (reference numeral 20')) and the communication unit 6 based on the execution program.

[0027] Next, a first embodiment of the measurement method will be described with reference to FIG. 3. In the first embodiment, measurement data is received from all of the detected GNSS receivers. First, the control unit 4 of the computer 2 executes a connection step S101 with a plurality of GNSS receivers by the communication detection and control unit 4a. Specifically, the communication detection and control unit 4a of the control unit 4 detects the GNSS receivers 21-26 having the communication unit 31 (and the communication unit of the GNSS receiver group B (reference numeral 20'), not shown) that has been previously paired with the communication unit 6 in the A area, and automatically connects the GNSS receiver group A (reference numeral 20) to the computer 2 by establishing Bluetooth communication between the communication unit 6 and the communication unit 31 (and the communication unit of the GNSS receiver group B (reference numeral 20'), not shown). The GNSS receiver group A (reference numeral 20) is set at a predetermined measurement point and has completed static observation, and measurement data is stored in the GNSS storage unit 30 of the GNSS receivers 21-26.

[0028] Next, the control unit 4 of the computer 2 shown in Fig. 1 executes a list-up step S102 of multiple GNSS receivers shown in Fig. 3 using the list generation unit 4b. Each of the GNSS receivers 21-26 is previously assigned a unique identification label such as an ID that identifies the receiver from the others. The list generation unit 4b of the control unit 4 writes the identification labels of all of the GNSS receivers 21-26 belonging to the GNSS receiver group A (reference numeral 20) detected in step S101 into the reception list stored in the GNSS receiver list storage unit 3b of the memory unit 3.

[0029] Next, the control unit 4 of the computer 2 executes the measurement data reception step S103 shown in Figure 3 using the communication detection and control unit 4a, receives reception data from all GNSS receivers 21 to 26 of the listed GNSS receiver group A (symbol 20) in the order listed, and stores it in the measurement data storage unit 3c of the memory unit 3.

[0030] After the surveying work, the control unit 4 of the computer 2 executes the baseline vector calculation step S104 using the baseline vector generation unit 4f in Figure 3, analyzes the individual received data obtained from the GNSS receivers 21-26 based on the static method, and calculates a specified baseline vector between the measurement points.

[0031] Next, a second embodiment of the measurement method will be described with reference to Fig. 4. In the second embodiment, measurement data is received only from GNSS receivers in which measurement data has been accumulated among the detected GNSS receivers. The measurement method of the second embodiment executes the same steps S101, S103, and S104 as the first embodiment, except that list-up step S102' is different from list-up step S102 of the first embodiment.

[0032] First, the control unit 4 of the computer 2 executes step S101 by the communication detection and control unit 4a, and automatically connects the GNSS receiver group A (reference symbol 20) that exists within the communication range to the computer 2 by Bluetooth communication. The GNSS receiver group A (reference symbol 20) is set at a predetermined measurement point and has completed static observation, but in each of the GNSS memories 30 of the GNSS receivers 21 to 26, some have measurement data stored therein and some do not.

[0033] Next, the control unit 4 of the computer 2 shown in FIG. 1 executes sub-steps S201 to S203 in the list-up step S102'. Specifically, after executing step S101, the measurement data existence confirmation unit 4c of the control unit 4 executes the measurement data existence confirmation step S201 in which it confirms for each GNSS receiver whether measurement data is accumulated in each connected GNSS receiver 21-26. Next, the list generation unit 4b of FIG. 1 executes the selection step S202, and writes only the identification labels of the GNSS receivers whose accumulation of measurement data has been confirmed in the existence confirmation step S201 among the GNSS receivers 21-26 into the reception list stored in the GNSS receiver list storage unit 3b of the storage unit 3. Next, the existence confirmation unit 4c executes the receiver confirmation step S203 to determine whether the accumulation of reception data has been confirmed in all detected GNSS receivers 21-26, and if there is an unconfirmed GNSS receiver, the control unit 4 executes steps S201 and S202 again for the next unconfirmed detected GNSS receiver.

[0034] If there is no unconfirmed GNSS even after executing the receiver confirmation step S203 in FIG. 4, the control unit 4 in FIG. 1 executes step S103 in FIG. 4 by the communication detection and control unit 4a, receives reception data from the GNSS receivers 21-26 that have accumulated reception data in the order of the list, and stores the data in the measurement data storage unit 3c of the storage unit 3. Finally, the control unit 4 of the computer 2 executes the baseline vector calculation step S104 by the baseline vector generation unit 4f in FIG. 3, analyzes each reception data based on the static method, and calculates a predetermined baseline vector between the measurement points. According to the surveying method of the second embodiment, measurement data is taken into the computer 2 only from the GNSS receivers that have measurement data among the detected GNSS receivers 21-26, so that the measurement data can be taken in more quickly.

[0035] Next, a third embodiment of the present measurement method will be described with reference to Fig. 5. In the third embodiment, only measurement data measured during a predetermined time period is received from among the measurement data stored in the detected GNSS receiver. The measurement method of the third embodiment executes the same steps S101, S102, and S104 as the first embodiment, except that measurement data reception step S103' differs from measurement data reception step S103 of the first embodiment.

[0036] First, the control unit 4 of the computer 2 executes step S101 using the communication detection and control unit 4a, and automatically connects GNSS receiver group A (reference numeral 20) that exists within the communication range to the computer 2 via Bluetooth communication. Next, the control unit 4 of the computer 2 shown in Fig. 1 executes a list-up step S102 of a plurality of GNSS receivers shown in Fig. 5 using the list generation unit 4b, and writes the identification labels of all the GNSS receivers 21 to 26 belonging to the GNSS receiver group A (reference numeral 20) detected in step S101 into the reception list stored in the GNSS receiver list storage unit 3b of the memory unit 3.

[0037] The GNSS receiver group A (reference symbol 20) has been set at a predetermined measurement point and has completed static observation, and measurement data including a time stamp indicating the measurement time of the coordinate data is stored in the GNSS storage unit 30 of the GNSS receivers 21 to 26. Also, the acquisition time zone storage unit 3d of the storage unit 3 of the computer 2 stores in advance acquisition time zone data indicating a predetermined measurement time zone (e.g., from 7:00 to 17:00) to be used for baseline analysis in the measurement data stored in each GNSS receiver.

[0038] After executing step S102, the control unit 4 of the computer 2 shown in FIG. 1 executes sub-steps S301 to S303 in the measurement data reception step S103'. Specifically, after executing step S102, the measurement data time comparison unit 4d of the control unit 4 executes the time comparison step S301, and sequentially compares the time stamp of the measurement data stored in any of the GNSS receivers 21 to 26 with the acquisition time period stored as data in the acquisition time period storage unit 3d. Next, the communication detection and control unit 4a of the control unit 4 in FIG. 1 executes the recording step S302, and receives only the measurement data whose time stamp and acquisition time period match from the GNSS receiver among the accumulated measurement data, and writes it to the measurement data storage unit. Next, the time comparison unit 4d executes the receiver confirmation step S303 to determine whether or not the accumulation of the reception data in all the detected GNSS receivers 21 to 26 has been confirmed, and if there is an unconfirmed GNSS receiver, the control unit 4 executes steps S301 and S302 again for the next unconfirmed detected GNSS receiver.

[0039] If there is no unconfirmed GNSS even after executing the receiver confirmation step S303 in Fig. 4, the control unit 4 in Fig. 1 executes the post-survey baseline vector calculation step S104 by the baseline vector generation unit 4f in Fig. 3, analyzes each received data based on the static method, and calculates a predetermined baseline vector between the measurement points. According to the surveying method of the third embodiment, the measurement data is imported from the GNSS receivers 21-26 to the computer 2 only to the measurement data measured in the time period required for baseline analysis, so that the measurement data can be imported more quickly and the operator is not required to sort out unnecessary measurement data before baseline analysis after importation.

[0040] Next, a fourth embodiment of the measurement method will be described with reference to Fig. 6. In the fourth embodiment, measurement data is received only from GNSS receivers included in a specific GNSS receiver group used for analysis among a plurality of detected GNSS receiver groups. The measurement method of the third embodiment executes the same steps S101, S103, and S104 as the first embodiment, except that list-up step S102''' is different from list-up step S102 of the first embodiment.

[0041] First, the control unit 4 of the computer 2 executes a connection step S101 by the communication detection and control unit 4a, and automatically connects GNSS receiver group A (reference numeral 20) that exists within the communication range to the computer 2 by Bluetooth communication.

[0042] In addition, when the GNSS receiver group B (symbol 20') arranged in area B in Figure 1 finishes static observation and is brought back to area B' shown by the virtual line where communication with computer 2 is possible, the GNSS receivers 21' to 26' are also detected in connection step S101 and automatically connected to computer 2.

[0043] 1 has been set at a measurement point in area A in FIG. 1 and has completed static observation, and the GNSS storage units 30 of the GNSS receivers 21-26 have stored measurement data with a group stamp indicating group A to which the GNSS receivers 21-26 belong. The GNSS receivers 21'-26' have stored measurement data with a loop stamp indicating group B to which they belong. The analysis group storage unit 3e of the storage unit 3 of the computer 2 has previously stored analysis group data indicating analysis group A of the GNSS receivers 21-26 used for analysis.

[0044] After executing step S101, the control unit 4 of the computer 2 executes sub-steps S401 to S403 in list-up step S102''' in Fig. 6. Specifically, after executing step S101, the measurement data group comparison unit 4e of the control unit 4 shown in Fig. 1 executes a time comparison step S301, and compares the group stamp of the measurement data accumulated in any of the GNSS receivers 21-26 and the GNSS receivers 21'-26' with the data of analysis group A stored in the analysis group storage unit 3e.

[0045] The list generation unit 4b in Figure 1 executes the selection step S402 and writes only the identification labels of the GNSS receivers 21 to 26 of group A that have accumulated measurement data including the group stamp of analysis group A into the reception list stored in the GNSS receiver list storage unit 3b of the memory unit 3.

[0046] Next, the list creation unit 4b executes the receiver confirmation step S303 to determine whether or not all detected GNSS receivers 21-26 and GNSS receivers 21'-26' have been selected, and if there are any unselected GNSS receivers, the control unit 4 again executes steps S401 and S402 for the next detected GNSS receiver that has not been confirmed.

[0047] If there is no unconfirmed GNSS even after executing receiver confirmation step S403 in Fig. 6, the control unit 4 in Fig. 1 executes step S103 in Fig. 6 using the communication detection and control unit 4a, receives reception data only from the GNSS receivers 21-26 in the order of the list, and stores the data in the measurement data storage unit 3c of the memory unit 3. After the surveying work, the control unit 4 of the computer 2 analyzes each piece of reception data using the baseline vector generation unit 4f in Fig. 3 based on the static method, and calculates a predetermined baseline vector between the measurement points in the area.

[0048] When performing a baseline analysis of area B, the analysis group stored in the analysis group storage unit 3e is rewritten in advance from A to B. In this case, the computer automatically receives measurement data only from the GNSS receivers 21'-26' belonging to group B, and calculates a predetermined baseline vector between the measurement points in area B.

[0049] According to the surveying method of the fourth embodiment, even if a GNSS receiver group A (reference symbol 20) that performed static observation in a certain area A and a GNSS receiver group B (reference symbol 20') that performed static observation in an area B are brought into the communication range of the computer 2 at the same time, if analysis group data is written to the memory unit so that baseline analysis of the area A is performed first, only the measurement data from the GNSS receiver group A (reference symbol 20) is imported into the computer 2, and the measurement data of the GNSS receiver group B (reference symbol 20') that performed measurement in the area B is not imported, preventing the mixing of measurement data across the measurement areas A and B. This eliminates the need for an operator to carefully examine and select the measurement data that is mixed across the measurement areas before baseline analysis after import. [Explanation of symbols]

[0050] 1. Surveying System 2. Computer 3 Storage section 4. Control Unit 6, 31 Communication unit for short-distance wireless communication

Claims

1. A surveying method for detecting measurement data of measurement point coordinates by static observation using a GNSS receiver that is installed at a plurality of measurement points as positioning targets and stores the measurement data, and importing the measurement data from the GNSS receiver into a memory unit of a computer, comprising: When the measurement data is input from the plurality of GNSS receivers to the computer, The control unit is A connection step of detecting and automatically connecting to the plurality of GNSS receivers by short-range wireless communication; A listing step of listing the connected GNSS receivers; a measurement data receiving step of sequentially receiving the measurement data from each of the listed GNSS receivers; A surveying method comprising the steps of:

2. The listing step includes: checking for the presence of measurement data in the GNSS receiver; A selection step of selecting and including in the list only GNSS receivers for which measurement data exists; 2. The surveying method according to claim 1, further comprising:

3. the measurement data includes a time stamp indicating a time of measurement by the GNSS receiver; The storage unit stores an acquisition time period that limits a time period during which the measurement data acquired from the GNSS receiver was measured; The measurement data receiving step includes: A time comparison step of comparing a time stamp of the measurement data in the GNSS receiver with the acquisition time period; a selective reception step of selecting and receiving only the measurement data whose timestamp coincides with the acquisition time period; 2. The surveying method according to claim 1, further comprising:

4. The measurement data includes a group stamp indicating which group each of the multiple GNSS receivers belongs to; The storage unit stores an analysis group for performing an analysis of a baseline vector, The listing step includes: a group comparison step of comparing the group stamps of measurement data in a GNSS receiver with the analysis group; a selection step of selecting and including in a list only those GNSS receivers whose group stamps match the analysis group; 2. The surveying method according to claim 1, further comprising:

5. 2. The surveying method according to claim 1, wherein the short-distance wireless communication is communication using Bluetooth (registered trademark).

6. A surveying system for carrying out the surveying method according to any one of claims 1 to 5.

7. A surveying program for causing a computer to execute the surveying method according to any one of claims 1 to 5.

Images