KR102544178B1 - RTK terminal apparatus, method for generating position information, distance service system and method using RTK terminal apparatus - Google Patents

Abstract

The present invention relates to an RTK terminal apparatus, a method for generating position information of the same, and a distance measurement service system and method using the same. According to the present invention, the RTK terminal apparatus comprises: an RTK communication unit receiving a radio technical commission for maritime services (RTCM) correction signal from an RTK server or DGNSS reference station, and an RTK chip receiving a GNSS signal from a GNSS satellite and using the RTCM correction signal received by the RTK communication unit and the GNSS signal to calculate the current location. The RTK communication unit includes: a timer generating time information; an RTCM reception period setting unit setting an RTCM reception period for receiving the RTCM correction signal; a network transport of RTCM via internet protocol (NTRIP) transceiver unit receiving the RTCM correction signal from the RTK server at each RTCM reception period set by the RTCM reception period setting unit; and a control unit receiving the time information corresponding to the RTCM reception period set by the RTMC reception period setting unit from the timer to provide the time information to the NTRIP transceiver. Accordingly, an RTK device/service capable of applying a battery suitable for portable use and reducing data capacity, and current consumption and data usage can be reduced by changing the RTCM cycle (automatic, manual, etc.), thereby implementing a battery-type terminal suitable for portable use.

Description

RTK terminal apparatus, method for generating location information of RTK terminal apparatus, distance measurement service system using RTK terminal and method thereof {RTK terminal apparatus, method for generating position information, distance service system and method using RTK terminal apparatus}

The present invention relates to an RTK service, and more particularly, to an RTK terminal device that provides power consumption optimization for a high-precision positioning service, a method for generating location information of the RTK terminal device, and a distance measurement service system using an RTK terminal and its method.

) After receiving the satellite signal and receiving RTCM (Radio Technical Commission for Maritime Services, correction signal) from the reference station, reflecting the base station correction signal on the received GNSS satellite signal, calculating the final position Fix it. That is, the RTK technology uses a GNSS correction signal (RTCM) generated by a reference station that already knows a precise location, such as a satellite reference point, to obtain coordinate values with precision in centimeters (cm) in real time. GNSS positioning ( positioning) technique, and RTCM is received and utilized once per second. At this time, when a correction signal is received from a mobile station, such as a vehicle, drone, or ship, according to the NTRIP (Network Transport of RTCM via Internet Protocol) protocol through a communication network (wired, LTE/5G, etc.), it is called network RTK technology.

RTK technology capable of positioning in centimeters in real time can be applied to various applications such as positioning/surveying that requires high precision, autonomous driving, platoon flight and pier displacement measurement, sports activity analysis, and golf course hole cup location transmission. .

Currently, for example, in the golf course service, the positioning of the hole cup is carried out by RTK, and the golfer's current position uses GPS, so the golfer receives the distance error (best 3m) service with meter (m) unit precision.

However, since distance measurement services using portable devices use GPS-based distance measurement rather than RTK, accuracy is poor. For example, in a golf field, it is much more convenient to know a more precise location in centimeters (cm) in real time instead of a GPS measuring device that tells the current distance in meters. If a golfer from the green hole cup or knows how far away and how high the ball hit by the golfer is, you can hit it with the same feeling as on the screen driving range, and you can judge yourself without needing a caddy.

The RTK service with high accuracy is expensive, and because it receives and processes a correction signal once per second, it consumes a lot of battery, so there is a limit to using it in a portable terminal. For example, the existing expensive RTK solution (for vehicles) is difficult to price, and it is difficult to commercialize it for portable use (wearable). Therefore, consumers may prefer a product that is inexpensive, supports high precision, has a compact size and weight, and guarantees battery usage time.

Therefore, it is necessary to develop a portable terminal capable of precise positioning by using a communication-based network RTK technology, and to provide a service using the same.

In the case of a terminal or portable device that requires proper battery insertion for miniaturization of product size, it is necessary to change the cycle to receive intermittent RTCM according to service classification if power consumption and data capacity are also considered during communication traffic to receive a correction signal. there is In the case of vehicle-applied services, calculation is performed by receiving RTCM (correction signal) once per second by default. .

Registered Patent Publication No. 10-2320523, 2021.10.27)

The problem to be solved by the present invention was created to solve the above problems. The present invention provides RTK service in a portable terminal that is inexpensive, supports high precision, has a compact size and weight, and guarantees battery usage time. Miniaturize and consider current consumption. In addition, the RTCM reception period is changed to receive intermittent RTCM according to service classification considering the data capacity during traffic.

Specifically, the RTCM correction signal period used in the RTK service can be adjusted manually or automatically, thereby increasing the correction period to reduce battery consumption and to apply a small battery with an appropriate capacity by reducing battery current, thereby miniaturizing the device. An object of the present invention is to provide an RTK terminal device and a method for generating location information of an RTK terminal device, enabling RTK service in a portable terminal such as a smart phone by enabling and reducing the size of data.

Another problem to be solved by the present invention is to provide a wearable location and distance measurement service system and method for sports using an RTK terminal. As an example, a golf distance measurement service system and method will be described, and it can be applied to various sports location and distance measurement services.

An RTK terminal device according to the present invention for solving the above technical problem includes an RTK communication unit for receiving an RTCM correction signal from an RTK server or a DGNSS reference station; and an RTK chip for receiving a GNSS signal from a GNSS satellite and calculating a current position using the RTCM correction signal received by the RTK communication unit and the GNSS signal, wherein the RTK communication unit includes a timer generating time information; an RTCM reception period setting unit configured to set an RTCM reception period for receiving the RTCM correction signal; an NTRIP transmission/reception unit for receiving an RTCM correction signal from the RTK server for each RTCM reception period set by the RTCM reception period setting unit; and a control unit receiving time information corresponding to the RTCM reception period set by the RTMC reception period setting unit from the timer and providing the received time information to the NTRIP transmission/reception unit.

The control unit may set the RTCM reception period in the RTMC reception period setting unit according to weather information or the moving speed of the RTK terminal, and the RTCM reception period setting unit may include a user interface for setting the RTCM reception period through a touch or button. can

According to the present invention for solving the technical problem, a method for generating location information of an RTK terminal device includes the steps of setting an RTCM reception period by the RTK communication unit; Receiving an RTCM correction signal from an RTK server or a DGNSS reference station by the RTK communication unit for each set RTCM reception period; Receiving a GNSS signal from a GNSS satellite; and calculating the current location of the RTK terminal device using the RTCM correction signal received by the RTK communication unit and the GNSS signal received from the GNSS satellite.

In the step of setting the RTCM reception period, the RTCM reception period may be set through a user interface including a touch or button, or the RTCM reception period may be set according to weather information or a moving speed of an RTK terminal.

According to the present invention for solving the above technical problem, a distance measurement service system using an RTK terminal includes an RTK server for receiving an RTCM correction signal from a DGNSS reference station; a portable RTK terminal that receives a GNSS signal from a GNSS satellite and an RTCM correction signal from the RTK server, calculates a current location using the received GNSS signal and RTCM correction signal, and generates location information; and a DB server for receiving location information of a reference terminal and transmitting the location information of the reference terminal to the portable RTK terminal, wherein the portable RTK terminal sets an RTCM reception period for receiving the RTCM correction signal, The distance between the portable RTK terminal and the reference terminal is calculated using the location information of the portable RTK terminal and the location information of the reference terminal received from the DB server.

The portable RTK terminal includes a timer for generating time information; an NTRIP transceiver for receiving an RTCM correction signal from the RTK server at each set RTCM reception period; and a control unit receiving time information corresponding to a set RTCM reception period from the timer and providing the received time information to the NTRIP transceiver. The portable RTK terminal may provide a user interface for setting the RTCM reception period, and set the RTCM reception period according to weather information or a moving speed of the portable RTK terminal.

According to the present invention for solving the above technical problem, a distance measurement service method using an RTK terminal includes the steps of an RTK server receiving an RTCM correction signal from a DGNSS reference station; generating location information by calculating, by a portable RTK terminal, the location of the portable RTK terminal; DB server receives the location information of the reference terminal and transmits it to the portable RTK terminal; and calculating, by the portable RTK terminal, a distance between the portable RTK terminal and the reference terminal using location information of the portable RTK terminal and location information of the reference terminal received from the DB server, In the step of generating location information of the terminal, the portable RTK terminal receives a GNSS signal from a GNSS satellite and an RTCM correction signal from the RTK server, and calculates the location of the portable RTK terminal using the received GNSS signal and RTCM correction signal location information is generated, and an RTCM reception period for receiving an RTCM correction signal from the RTK server is set.

The RTCM reception period may be set through a user interface provided by the portable RTK terminal or may be set according to weather information or moving speed of the portable RTK terminal.

When calculating the distance between each hole and ball in the golf course, RTK devices are currently used for hole cups, but GPS devices are applied for golfers (portable) due to various difficulties. Although a high-capacity battery should be installed due to high current consumption, according to the RTK terminal device and the distance measurement service system and method using the RTK terminal according to the present invention, the application of a battery suitable for portable use and the RTK device/service that can reduce data capacity can be implemented.

In addition, according to the present invention, in order to reduce data traffic and current consumption when receiving an RTK correction signal, the RTCM (correction signal) reception period, which has not been previously applied, is sufficiently increased compared to 1 second per second correction signal reception, so that the RTK chip calculates Therefore, it is possible to provide a distance without hindrance to the service even if the cycle is set within a stable range of a certain range before the critical time at which the existing correction signal can be used as an effective value. For example, it is possible to position with an error of several centimeters to several tens of centimeters even if the existing reception is received once every second → once every max 60 to 100 seconds.

In addition, according to the present invention, it is possible to implement a battery-type terminal suitable for portable use by reducing current consumption and data usage by changing the RTCM cycle (automatic, manual, etc.). For example, in relation to data transmission and current consumption, when changing 1 second to 60 seconds or 100 seconds, the communication mode is maintained in the Sleep state during the time when the RTCM correction signal is not received, and it can be reduced proportionally to 1/60 or 1/100. .

When changing the RTCM cycle as described above, convenience according to the user's environment can be provided by applying automatic and manual changing methods.

1 shows a schematic diagram of an RTK service system.
2 is a block diagram showing the configuration of a portable RTK terminal device and an RTK service system using the same according to an embodiment of the present invention.
3 is a block diagram showing the configuration of an RTK service system using a portable RTK terminal device according to another embodiment of the present invention.
4 is a block diagram showing the configuration of an RTK communication unit of a portable RTK terminal device according to an embodiment of the present invention.
5 illustrates the configuration of a golf distance measurement service system using a portable RTK terminal according to an embodiment of the present invention.
6 is a block diagram showing the configuration of a golf distance measurement service system using a portable RTK terminal according to an embodiment of the present invention.
7 is a flowchart illustrating a golf distance measurement service method using a portable RTK terminal according to an embodiment of the present invention.
8A shows positioning test results obtained by changing the RTCM cycle, and shows a positioning error (cm) measured for 30 minutes with a cycle of 60 seconds.
FIG. 8B shows positioning test results obtained by changing the RTCM cycle, and shows a positioning error (cm) measured for 30 minutes with a cycle of 100 seconds.
FIG. 9 shows positioning test results obtained by changing the RTCM cycle, and shows positioning errors (cm) shown in FIGS. 7 and 8 together.
10 is a table showing current consumption according to RTCM cycle change.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Since the embodiments described in this specification and the configurations shown in the drawings are only one preferred embodiment of the present invention and do not represent all of the technical spirit of the present invention, various equivalents that can replace them at the time of this application It should be understood that there may be variations and variations.

1 shows a schematic diagram of an RTK service system. 1, when the GNSS satellite 110 transmits a GNSS signal, the DGNSS reference station 120 receives the GNSS signal transmitted from the GNSS satellite 110, generates an RTCM correction signal, and transmits it to the RTK server 130 do. When the RTK server 130 transmits the RTCM correction signal to the RTK terminal 140, the RTK terminal 140 receives the RTCM correction signal through the communication module of the RTK terminal 140 through the mobile communication network (LTE, 5G, etc.) The RTK chipset calculates the location information of the RTK terminal 140 using the GNSS signal and the RTCM correction signal.

2 is a block diagram showing the configuration of an RTK terminal device and an RTK service system using the same according to an embodiment of the present invention. Referring to FIG. 2, an RTK terminal device and an RTK service system using the same according to an embodiment of the present invention include an RTK server 230 and an RTK terminal 250.

The RTK server 230 receives the RTCM correction signal from the DGNSS reference station 220.

The RTK terminal 250 is movable, receives a GNSS signal from a GNSS satellite and an RTCM correction signal from the RTK server, accurately calculates the current position using the received GNSS signal and RTCM correction signal, and obtains latitude, longitude, and altitude. generates location information including, and includes an RTK communication unit 252 and an RTK chip 254.

The RTK communication unit 252 receives the RTCM correction signal from the RTK server 230 using a mobile communication network.

The RTK chip 254 receives the GNSS signal from the GNSS satellite 210, and accurately calculates the current position using the RTCM correction signal received by the RTK communication unit 252 and the GNSS signal to include latitude, longitude, and altitude generate location information.

4 is a block diagram showing the configuration of the RTK communication unit of the RTK terminal device according to an embodiment of the present invention. ) and a control unit 440.

The timer 410 generates time information. The RTCM reception period setting unit 420 may set an RTCM reception period for receiving the RTCM correction signal and provide a user interface for setting the RTCM reception period. The user interface allows the RTCM reception period to be set through a touch or button. The RTCM reception period may be set manually with a button or touch, or set automatically with a program. For example, button (#1) receives and updates an RTCM correction signal every second, button (#2) receives and updates an RTCM correction signal every 30 seconds, and button (#3) updates an RTCM correction signal every 30 seconds. You can make it receive and update every 60 seconds. In addition, the manual mode and the automatic mode may be changed depending on when the same button is pushed once, pushed twice, and the like.

In the case of manual setting, the RTCM cycle can be adjusted according to external manipulations (buttons, etc.) in consideration of weather conditions through an external button on the RTK terminal or when walking or moving a vehicle. In the case of automatic (program) setting, it is possible to automatically change the mode according to changes in the surrounding environment of the RTK terminal. In the case of automatic configuration, manual configuration or automatic configuration can be determined by self-determination according to a preset algorithm according to the movement speed of the RTK terminal, weather, etc. For example, considering the weather of the region where the DGNSS reference station and the RTK terminal are located through a weather app or an air pressure sensor, if the weather in the region where the DGNSS reference station and the RTK terminal are located are similar, the RTCM cycle is increased, and the DGNSS reference If it is determined that the weather of the region where the station and the RTK terminal are located is different from each other, the RTCM cycle can be increased while automatically converting the RTCM cycle in units of 1 second. In addition, the RTCM cycle may be automatically changed according to the moving speed of the RTK terminal. For example, if the speed is less than 10 Km per hour, the RTCM cycle may be increased, and if the speed is more than 10 Km, once per second may be applied.

The NTRIP transceiver 430 receives an RTCM correction signal from the RTK server 230 or the DGNSS reference station 320 for each RTCM reception period set by the RTCM reception period setting unit 420, and the latitude of the movable RTK terminal, Transmits current location information including longitude and altitude.

The control unit 440 receives time information corresponding to the RTCM reception period set by the RTMC reception period setting unit 420 from the timer 410 and provides it to the NTRIP transceiver 430.

At this time, the control unit 440 receives weather information from the app and sets the RTCM reception period differently in the RTMC reception period setting unit 420 according to the weather information, or receives the moving speed of the RTK terminal 250 from the speed sensor. Accordingly, the RTCM reception period may be differently set in the RTMC reception period setting unit 420 according to the moving speed of the RTK terminal 250.

And, the RTK terminal device equipped with the RTK communication unit and the RTK chip can generate location information about its current location as follows. First, when the RTK communication unit sets the RTCM reception period, the RTK communication unit receives the RTCM correction signal from the RTK server or the DGNSS reference station for each RTCM reception period set by the RTK communication unit, and the RTK chip receives the GNSS signal from the GNSS satellite receive Then, the RTK chip calculates the current location of the RTK terminal device using the RTCM correction signal received by the RTK communication unit and the GNSS signal received from the GNSS satellite. Regarding the setting of the RTCM reception period, the RTCM reception period may be set through a user interface including a touch or button, or the RTCM reception period may be set according to weather information or a moving speed of an RTK terminal.

3 is a block diagram showing the configuration of an RTK service system using a portable RTK terminal device according to another embodiment of the present invention. According to another embodiment of the present invention, a portable RTK terminal device includes a DGNSS reference station 320 and an RTK terminal 350.

DGNSS reference station 320 receives GNSS signals from GNSS satellites 310 and generates RTCM correction signals.

The RTK terminal 350 is movable, receives a GNSS signal from a GNSS satellite and an RTCM correction signal from the DGNSS reference station, and accurately calculates the current position using the received GNSS signal and RTCM correction signal to obtain latitude, longitude, and altitude Create location information including

The RTK communication unit 352 may receive an RTCM correction signal using a mobile communication network and provide a user interface for setting an RTCM reception period for receiving the RTCM correction signal.

The RTK chip 354 receives the GNSS signal from the GNSS satellite 310, and accurately calculates the current location of the RTK terminal 350 using the RTCM correction signal received by the RTK communication unit 352 and the GNSS signal to obtain latitude Creates location information including , longitude, and altitude.

4 is a block diagram showing the configuration of the RTK communication unit of the RTK terminal 350 according to an embodiment of the present invention. The RTK communication unit 352 includes a timer 410, an RTCM reception period setting unit 420, and an NTRIP transmission and reception unit. (430) and a control unit (440). The timer 410 generates time information, and the RTCM reception period setting unit 420 sets the RTCM reception period for receiving the RTCM correction signal and provides a user interface for setting the RTCM reception period. The user interface allows the RTCM reception period to be set through a touch or button. The RTCM reception period may be set manually with a button or touch, or set automatically with a program.

The NTRIP transceiver 430 receives an RTCM correction signal from the RTK server 230 or the DGNSS reference station 320 for each RTCM reception period set by the RTCM reception period setting unit 420, and the latitude of the movable RTK terminal, Transmits current location information including longitude and altitude.

The control unit 440 receives time information corresponding to the RTCM reception period set by the RTMC reception period setting unit 420 from the timer 410 and provides it to the NTRIP transceiver 430, and receives weather information from the app to Depending on the weather information, the RTCM reception period is set differently in the RTMC reception period setting unit 420, or the RTCM reception period setting unit 420 receives the moving speed of the RTK terminal from the speed sensor and sends the RTCM to the RTMC reception period setting unit 420 according to the moving speed of the RTK terminal. The receiving cycle can be set differently.

Meanwhile, a distance measurement service system using an RTK terminal according to the present invention may include an RTK server, a portable RTK terminal, and a DB server. The RTK server receives the RTCM correction signal from the DGNSS reference station. The portable RTK terminal receives a GNSS signal from a GNSS satellite and an RTCM correction signal from the RTK server, calculates a current location using the received GNSS signal and RTCM correction signal, and generates location information. The DB server receives location information of the reference terminal and transmits the location information of the reference terminal to the portable RTK terminal.

The portable RTK terminal sets an RTCM reception period for receiving the RTCM correction signal, and uses the location information of the portable RTK terminal and the location information of the reference terminal received from the DB server to determine the portable RTK terminal and the reference terminal. Calculate the distance between

And, the portable RTK terminal may include a timer, an NTRIP transmission/reception unit, and a control unit. The timer generates time information, the NTRIP transmission/reception unit receives an RTCM correction signal from the RTK server for each set RTCM reception period, and the control unit receives time information corresponding to the set RTCM reception period from the timer to perform the NTRIP Provided by the transmitter and receiver. The portable RTK terminal may provide a user interface for setting the RTCM reception period, and set the RTCM reception period according to weather information or a moving speed of the portable RTK terminal.

5 is a conceptual diagram showing the configuration of a golf distance measurement service system using a portable RTK terminal as an example of a distance measurement service system using a portable RTK terminal according to the present invention, and FIG. 6 is a conceptual diagram of the present invention. It is a block diagram showing the configuration of a golf distance measurement service system using a portable RTK terminal according to an embodiment of. Referring to FIGS. 2, 4, 5, and 6, a golf distance measurement service system using a portable RTK terminal according to an embodiment of the present invention will be described.

A golf distance measurement service system using a portable RTK terminal according to an embodiment of the present invention includes RTK servers 530 and 630, portable RTK terminals 550 and 650, hole cup RTK terminals 560 and 660, and a DB server. (540, 640).

The RTK servers 530 and 630 receive RTCM correction signals from the DGNSS reference stations 520 and 620.

Portable RTK terminals (550, 650) It is movable, receives a GNSS signal from a GNSS satellite and an RTCM correction signal from the RTK server, and precisely calculates the current position using the received GNSS signal and RTCM correction signal to determine the golfer's position including latitude, longitude, and altitude. It generates information and includes an RTK communication unit 652 and an RTK chip 654.

The RTK communication unit 652 receives the RTCM correction signal from the RTK server 630 using a mobile communication network.

The RTK chip 654 receives the GNSS signal from the GNSS satellite 610, and accurately calculates the current position using the RTCM correction signal received by the RTK communication unit 652 and the GNSS signal to include latitude, longitude, and altitude generate location information.

4 is a block diagram showing the configuration of the RTK communication unit 652 of the RTK terminals 550 and 650 according to an embodiment of the present invention, and the RTK communication unit 652 has the same configuration as the RTK communication unit 252 of FIG. and may include a timer 410, an RTCM reception period setting unit 420, an NTRIP transmission/reception unit 430, and a control unit 440. Since the timer 410, the RTCM reception period setting unit 420, the NTRIP transmission/reception unit 430, and the control unit 440 are the same as those described above, a detailed description thereof will be omitted.

However, the RTCM reception period setting unit 420 sets the RTCM reception period for receiving the RTCM correction signal and provides a user interface for setting the RTCM reception period. The user interface allows the RTCM reception period to be set through a touch or button. The RTCM reception period may be set manually with a button or touch, or set automatically with a program.

In the case of manual setting, the RTCM cycle can be adjusted according to external manipulations (buttons, touches, etc.) depending on weather conditions or walking or vehicle movement through buttons provided by the portable RTK terminals (550, 650) or touching the touch screen. there is.

In the case of automatic (program) setting, the mode can be changed automatically by recognizing changes in the surrounding environment of the portable RTK terminals 550 and 650. In the case of automatic setting, it is possible to determine whether manual setting or automatic setting is performed by self-determination according to a preset algorithm according to the moving speed of the portable RTK terminals 550 and 650, the weather, and the like. For example, the DGNSS reference stations (520, 620) and the DGNSS reference stations (520, 620) in consideration of the weather in the region where the DGNSS reference stations (520, 620) and the portable RTK terminals (550, 650) at the golf course are located through a weather app or an air pressure sensor. If the weather in the area where the portable RTK terminals 550 and 650 are located is similar, the RTCM cycle is increased, and if it is determined that the weather in the area where the DGNSS reference stations 520 and 620 and the portable RTK terminals 550 and 650 are located are different from each other, , the RTCM cycle can be increased while automatically converting the RTCM cycle in units of 1 second. In addition, the RTCM cycle may be automatically changed according to the moving speed of the portable RTK terminals 550 and 650. For example, if the speed is less than 10 Km per hour, the RTCM cycle may be increased, and if the speed is more than 10 Km, once per second may be applied.

The hole cup RTK terminals (560, 660) are reference terminals, installed on the flag side of the hole cup, and receive a GNSS signal from the GNSS satellite and an RTCM correction signal from the RTK server, and use the received GNSS signal and RTCM correction signal. Precisely calculates the current location to create hole cup location information including latitude, longitude, and altitude. The hole cup RTK terminals 560 and 660, like the portable RTK terminals 550 and 660, have a hole cup RTK communication unit (not shown) and GNSS satellites 510, which receive RTCM correction signals from the RTK servers 530 and 630 through a mobile communication network. 610), and accurately calculates the current position using the RTCM correction signal received by the RTK communication unit (not shown) for hole cup and the GNSS signal to generate location information including latitude, longitude, and altitude An RTK chip (not shown) for hole cups may be included.

DB servers (540, 640) It stores map data of the golf course, receives location information of the hole cup RTK terminal through a mobile communication network, and transmits the location information of the hole cup RTK terminal and golf course map data to the portable RTK terminal.

At this time, the portable RTK terminals 550 and 650 receive map data of the golf course and location information of the portable RTK terminals 550 and 650 from the DB servers 540 and 640, and determine the location of the portable RTK terminals 550 and 650. The information and the location information of the hole cup RTK terminals 560 and 660 received from the DB servers 540 and 640 are used to calculate the distance between the golf ball and the hole cup, and display the distance on a map of the golf course to provide it to the user.

On the other hand, in the distance measurement service method using a portable RTK terminal according to an embodiment of the present invention, the RTK server receives an RTCM correction signal from a DGNSS reference station, and the portable RTK terminal calculates the location of the portable RTK terminal. Generating location information by doing so, DB server receiving the location information of the reference terminal and transmitting it to the portable RTK terminal; and calculating, by the portable RTK terminal, a distance between the portable RTK terminal and the reference terminal using location information of the portable RTK terminal and location information of the reference terminal received from the DB server. In the step of generating the location information of the portable RTK terminal, the portable RTK terminal receives a GNSS signal from a GNSS satellite and an RTCM correction signal from the RTK server, and uses the received GNSS signal and RTCM correction signal to determine the location information of the portable RTK terminal. Position information is generated by calculating the position, and an RTCM reception period for receiving an RTCM correction signal from the RTK server is set. The RTCM reception period may be set through a user interface provided by the portable RTK terminal, or may be set according to weather information or moving speed of the portable RTK terminal.

7 is a flowchart illustrating a golf distance measurement service method using a portable RTK terminal as an example of a distance measurement service method using an RTK terminal according to the present invention. Referring to FIGS. 5, 6, and 7, a golf distance measurement service method using a portable RTK terminal according to an embodiment of the present invention will be described.

The RTK servers 530 and 630 receive RTCM correction signals from the DGNSS reference stations 520 and 620 (step S710).

The portable RTK terminals 550 and 650 located on the golfer's side calculate the location of the portable RTK terminals 550 and 650 and generate location information of the portable RTK terminals 550 and 650 including latitude, longitude, and altitude (S720). step). Specifically, the portable RTK terminals 550 and 650 receive GNSS signals from the GNSS satellites 510 and 610 and RTCM correction signals from the RTK servers 530 and 630, and use the received GNSS signals and RTCM correction signals to generate portable RTK Location information of the portable RTK terminals 550 and 650 including latitude, longitude, and altitude is generated by calculating the location of the terminals 550 and 650.

The reference terminal installed on the flag side of the hole cup, for example, the hole cup RTK terminal (560, 660) calculates the position of the hole cup and generates hole cup location information including latitude, longitude, and altitude (step S730). Specifically, hole cup The RTK terminal (560, 660) receives the GNSS signal from the GNSS satellite (510, 610) and the RTCM correction signal from the RTK server (530, 630), and calculates the position of the hole cup using the received GNSS signal and RTCM correction signal. to generate the location information of the hole cup including latitude, longitude, and altitude.

The DB server (540, 640) storing the map data of the golf course receives the location information of the hole cup RTK terminal (560, 660) through a mobile communication network (step S740).

The DB server (540, 640) transmits the location information of the hole cup RTK terminal (560, 660) and map data of the golf course to the portable RTK terminal (550, 650) (step S750).

The portable RTK terminals 550 and 650 calculate the distance between the golf ball and the hole cup, display it on a map of the golf course, and provide it to the user (step S760). 640) receives the map data of the golf course and the location information of the portable RTK terminals 550 and 650, and receives the location information of the portable RTK terminals 550 and 650 and the hole cup RTK terminal 560 from the DB server 540 and 640. , 660), the distance between the golf ball and the hole cup may be calculated and displayed on a map of the golf course to be provided to the user.

At this time, the RTCM reception period in which the portable RTK terminals 550 and 650 receive the RTCM correction signal from the RTK servers 530 and 630 using the mobile communication network may be set through the user interface. The user interface allows the RTCM reception period to be set through a touch or button. The RTCM reception period may be set manually with a button or touch, or set automatically with a program.

In the case of manual setting, the RTCM cycle can be adjusted according to external manipulations (buttons, touches, etc.) depending on weather conditions or walking or vehicle movement through buttons provided by the portable RTK terminals (550, 650) or touching the touch screen. there is.

In the case of automatic (program) setting, the mode can be changed automatically by recognizing changes in the surrounding environment of the portable RTK terminals 550 and 650. In the case of automatic setting, it is possible to determine whether manual setting or automatic setting is performed by self-determination according to a preset algorithm according to the moving speed of the portable RTK terminals 550 and 650, the weather, and the like. For example, the DGNSS reference stations (520, 620) and the DGNSS reference stations (520, 620) in consideration of the weather in the region where the DGNSS reference stations (520, 620) and the portable RTK terminals (550, 650) at the golf course are located through a weather app or an air pressure sensor. If the weather in the area where the portable RTK terminals 550 and 650 are located is similar, the RTCM cycle is increased, and if it is determined that the weather in the area where the DGNSS reference stations 520 and 620 and the portable RTK terminals 550 and 650 are located are different from each other, , the RTCM cycle can be increased while automatically converting the RTCM cycle in units of 1 second. In addition, the RTCM cycle may be automatically changed according to the moving speed of the portable RTK terminals 550 and 650. For example, if the speed is less than 10 Km per hour, the RTCM cycle may be increased, and if the speed is more than 10 Km, once per second may be applied.

Figure 8a shows the positioning test results in which the RTCM cycle is changed, and shows the RTCM correction value measured for 30 minutes with a cycle of 60 seconds. FIG. 8B shows the positioning test result in which the RTCM cycle is changed, and shows the RTCM correction value measured for 30 minutes with a cycle of 100 seconds. FIG. 9 shows the positioning test result by changing the RTCM cycle, and shows the positioning error (cm) shown in FIGS. 7A and 7B together.

Conventionally, the RTCM correction signal is periodically received and used once per second. was measured and tested to verify whether positioning could be satisfied. 7a and 7b confirm the accuracy within 10 cm compared to the initial position error when the RTCM (correction signal) is updated every 60 seconds and every 100 seconds, and changes through various cycles and methods depending on the type of service It is considered applicable.

10 is a table showing the current consumption according to the RTCM cycle change, and the current consumption according to the RTCM cycle change was verified. Based on the LTE cat.M module, the current consumption according to the RTCM (correction signal) cycle was compared. Referring to FIG. 9, based on the LTE catM module, when the data of the corresponding byte for each RTCM reception cycle is communicated through the LTE module, when the RTCM cycle is once per second, 26 mAh for 100 bytes and 26 mAh for 1000 bytes Although 32mAh of current is consumed, if the RTCM cycle is performed once every 60 seconds, 0.43 mAh of current is consumed at 100 bytes and 0.54 mAh at 1000 bytes.

Even if the RTCM cycle is changed, accurate positioning (10 cm level) can be performed. As shown in the table of FIG. 9, in the case of a 60-second period, current consumption can be reduced to 1/60 level. This is just an example, and current consumption may vary depending on the type of communication module.

As described above, in the case of the RTK service applied to a vehicle, basically, RTCM (correction signal) is received once per second and calculation is performed. However, the portable RTK terminal and the RTK service system using the same according to the present invention In the case of low speed or walking, etc., the RTCM cycle is changed to longer. When RTCM (correction signal) is received once per second, current consumption and data capacity increase. However, in a portable (wearable) terminal other than a vehicle, the error is not large compared to the current position even if it is received at a longer period than 1 second, and the service to be provided It can be adjusted to a level (e.g. 25 cm). For example, it can be corrected by increasing the RTCM reception period from 1 second to 60 seconds, 100 seconds, and the like.

When changing the RTCM cycle, the cycle can be changed after automatic program change or manual change using an external button, or after determining various environments. For example, the RTCM cycle can be changed by recognizing the speed according to vehicle and pedestrian classification, and the RTCM can be changed according to the weather forecast (weather situation).

Although the present invention has been described with reference to the embodiments shown in the drawings, this is only exemplary, and those skilled in the art will understand that various modifications and equivalent other embodiments are possible therefrom. Therefore, the true technical protection scope of the present invention should be determined by the technical spirit of the attached claims.

110: GNSS satellite 120: DGNSS reference station
130: RTK server 140: RTK terminal
150: smartphone 210: GNSS satellite
220: DGNSS reference station 230: RTK server
250: RTK terminal 252: RTK communication unit
254: RTK chip 310: GNSS satellite
320: DGNSS reference station 350: RTK terminal
352: RTK communication unit 354: RTK chip
410: Timer 420: RTCM reception cycle setting unit
430: NTRIP transceiver 440: control unit
510: GNSS satellite 520: DGNSS reference station
530: RTK server 540: DB server
550: portable RTK terminal 560: hole cup RTK terminal
570: smartphone 610: GNSS satellite
620: DGNSS reference station 630: RTK server
640: DB server 650: Portable RTK terminal
652: RTK communication unit 654: RTK chip
660: hole cup RTK terminal (reference terminal)

Claims (9)

RTK communication unit for receiving the RTCM correction signal from the RTK server or DGNSS reference station; and
An RTK chip that receives a GNSS signal from a GNSS satellite and calculates a current position using the RTCM correction signal received by the RTK communication unit and the GNSS signal;
The RTK communication unit
a timer generating time information;
an RTCM reception period setting unit configured to set an RTCM reception period for receiving the RTCM correction signal;
an NTRIP transmission/reception unit for receiving an RTCM correction signal from the RTK server for each RTCM reception period set by the RTCM reception period setting unit; and
The time information corresponding to the RTCM reception period set by the RTCM reception period setting unit is received from the timer and provided to the NTRIP transceiver, and the RTCM reception period setting unit according to weather information or the moving speed of the RTK terminal. RTK terminal device including a control unit for setting. delete The method of claim 1, wherein the RTCM reception period setting unit
An RTK terminal device including a user interface for setting an RTCM reception period through a touch or button. In the method for generating location information of an RTK terminal device,
Setting the RTCM reception period;
Receiving an RTCM correction signal from an RTK server or a DGNSS reference station for each set RTCM reception period;
Receiving a GNSS signal from a GNSS satellite; and
Calculating a current position using the received RTCM correction signal and the GNSS signal received from the GNSS satellite;
The step of setting the RTCM reception period is
A method for generating location information of an RTK terminal device, characterized in that the RTCM reception period is set through a user interface, or the RTCM reception period is set according to weather information or moving speed of the RTK terminal. an RTK server receiving an RTCM correction signal from a DGNSS reference station;
a portable RTK terminal that receives a GNSS signal from a GNSS satellite and an RTCM correction signal from the RTK server, calculates a current location using the received GNSS signal and RTCM correction signal, and generates location information; and
A DB server for receiving location information of a reference terminal and transmitting the location information of the reference terminal to the portable RTK terminal;
The portable RTK terminal sets an RTCM reception period for receiving the RTCM correction signal, and uses the location information of the portable RTK terminal and the location information of the reference terminal received from the DB server to determine the portable RTK terminal and the reference terminal. calculates the distance between them, provides a user interface for setting the RTCM reception period, sets the RTCM reception period according to weather information or the moving speed of the portable RTK terminal,
The portable RTK terminal
a timer generating time information; an NTRIP transceiver for receiving an RTCM correction signal from the RTK server at each set RTCM reception period; and a controller for receiving time information corresponding to a set RTCM reception period from the timer and providing the received time information to the NTRIP transceiver. delete delete RTK server receiving the RTCM correction signal from the DGNSS reference station;
generating location information by calculating, by a portable RTK terminal, the location of the portable RTK terminal;
DB server receives the location information of the reference terminal and transmits it to the portable RTK terminal; and
Calculating, by the portable RTK terminal, a distance between the portable RTK terminal and the reference terminal using location information of the portable RTK terminal and location information of the reference terminal received from the DB server;
The step of generating location information of the portable RTK terminal
The portable RTK terminal receives a GNSS signal from a GNSS satellite and an RTCM correction signal from the RTK server, calculates a location of the portable RTK terminal using the received GNSS signal and RTCM correction signal, and generates location information;
Set an RTCM reception period for receiving an RTCM correction signal from the RTK server,
The RTCM reception period is set through a user interface provided by the portable RTK terminal or set according to weather information or a moving speed of the portable RTK terminal. delete

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