KR102071473B1 - IoT Device Positioning Method and System - Google Patents

Abstract

The present invention relates to an IoT device positioning method and system, wherein the system according to the present invention is connected in communication with a first device installed in a first location, the portable device for measuring the signal strength of the first device in at least three different locations And a server that registers the first location information of the first device, which is located by using the measured location information of the portable terminal and the signal strength information of the first device. The signal strength between the plurality of pre-registered devices and the new device is estimated to estimate a range in which the new device can exist. If the registration is not in the existing possible range, the mobile terminal is used to locate the new device again. According to the present invention, even in an environment in which a terminal serving as a positioning reference is not installed at a predetermined position, the position of the IoT device installed at an arbitrary position can be accurately and simply measured.

Description

IoT Device Positioning Method and System

The present invention relates to an IoT device positioning method and system, and more particularly, to a method and system for measuring the installation position of the IoT device using a portable terminal.

The term Internet of Things (IoT) first appeared in 1998 at the Massachusetts Institute of Technology (MIT) 's Auto-ID Lab. Later, in 2005, the ITU-T published the annual report 'The Internet of Things', foretelling that the Internet of Things would be the most basic framework for all the structures of the future information technology (IT) industrial revolution. The report defined the Internet of Things as "a new telecommunications infrastructure that connects all things in the world to networks, enabling humans and things to communicate with each other anytime, anywhere." In other words, the Internet of Things can be seen as an infrastructure for realizing a ubiquitous space. This ubiquitous space begins with the incorporation of computing devices with specific functions into the environment and things, and the environment or things themselves become intelligent.

Internet of Things services are technologies that provide us with a more convenient and safe life. Accordingly, various mobile carriers and terminal manufacturers are concentrating on developing IoT-enabled terminals and services as next generation mobile services.

Along with the expansion of IoT technology, low power wide area (LPWA) network technology is emerging, which provides low power capability that can be used for more than a year with a single battery and an effective communication distance of 10 km or more. Reflecting this, LPWA technologies such as LoRa and Sigfox, which use unlicensed Industrial Scientic and Medical (ISM) bands, are prominent in the market, and mobile carriers are also attempting to secure infrastructure and provide services using technologies using the ISM bands. have.

Location information of the IoT device may be utilized for such an IoT service. If the IoT device is installed in a known location, the location information can be registered and used. As a method of measuring the position of the positioning target at an arbitrary position, a method of measuring the position of the positioning target terminal using one or more access points installed at predetermined positions, such as Korean Patent No. 1,261,416, is known.

IoT services can be made in a variety of environments. Accordingly, there is a need for a method for accurately and simply measuring the position of an IoT device installed at an arbitrary position even in an environment in which a terminal serving as a positioning reference is not installed at a predetermined position.

The technical problem to be solved by the present invention is to provide a method and system for measuring the installation location of the IoT device using a mobile terminal.

The IoT device positioning method according to an embodiment of the present invention for solving the above technical problem, (a) connecting the first device and the portable terminal installed in the first position, (b) the portable terminal each other Measuring the location of the portable terminal and the signal strength of the first device at at least three other locations; (c) the location information of the portable terminal and the signal strength information of the first device measured in step (b); Positioning the first location using a; and (d) registering the located first location information of the first device with a server.

The method includes (e) measuring signal strength between a plurality of pre-registered devices including the first device and a second device installed at a second location, and (f) the plurality of pre-registered devices; The method may further include estimating a range in which the second device can exist using the signal strength between the second devices.

The method may further comprise: (g) communicating the second device with the portable terminal, and (h) measuring the location of the portable terminal and the signal strength of the second device at at least three different positions of the portable terminal; (I) positioning the second position by using the position information of the portable terminal and the signal strength information of the second device measured in the step (h), (j) the positioned second position If the second device exists in a range where the second device can exist, registering the positioned second position as position information of the second device, and (k) the positioned second position allows the second device to exist. If not in the range, the method may further include performing the second device location measurement through the mobile terminal again.

The IoT device positioning system according to an embodiment of the present invention for solving the above technical problem, is connected in communication with the first device installed in the first location, the signal strength of the first device in at least three different locations And a server for registering first position information of the first device, which is measured by using the measured position information of the portable terminal and signal strength information of the first device.

The portable terminal may transmit signal strength between a plurality of pre-registered devices including the first device and a second device installed at a second location to the server.

The server may estimate a range in which the second device can exist using the signal strength between the plurality of pre-registered devices and the second device.

The portable terminal may be communicatively connected to the second device and measure the location of the portable terminal and the signal strength of the second device at at least three different locations.

The server may be configured to position the second location by using the location information of the portable terminal and the signal strength information of the second device measured in a communication connection with the second device, and the second location is measured by the second location. If the second device exists in the range where the device can exist, the second location is registered as the location information of the second device, and if the location of the second location does not exist in the range where the second device can exist, the portable terminal The second device position measurement may be performed again.

The location of the portable terminal may be measured using a GNSS signal received from the portable terminal.

According to the present invention, even in an environment in which a terminal serving as a positioning reference is not installed at a predetermined position, the position of the IoT device installed at an arbitrary position can be accurately and simply measured.

1 is a block diagram showing the configuration of an IoT device positioning system according to an embodiment of the present invention.
2 is a conceptual diagram provided for explaining a mobile terminal-enabled IoT device positioning according to an embodiment of the present invention.
3 is a flowchart illustrating a method for positioning a mobile device using an IoT device according to an embodiment of the present invention.
4 and 5 are conceptual diagrams provided to explain the estimation of the possible range of existence of a new IoT device using a registered IoT device according to an embodiment of the present invention.
6 is a flowchart illustrating a method for positioning a new IoT device using a registered IoT device according to an embodiment of the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. The construction of the present invention and the effects thereof will be clearly understood through the following detailed description.

1 is a block diagram showing the configuration of an IoT device positioning system according to an embodiment of the present invention.

Referring to FIG. 1, an IoT device positioning system according to the present invention may include a plurality of IoT devices 100_1, 100_2, 100_3, 100_4,..., 100_n-1, 100_n, a mobile terminal 200, and a server 300. Can be.

The plurality of IoT devices 100_1, 100_2, 100_3, 100_4,..., 100_n-1, 100_n may communicate wirelessly via Bluetooth, Wi-Fi, and / or low power wide area (LPWA) networks such as LoRa and Sigfox. It may be implemented as a device that supports.

The IoT devices 100_1, 100_2, 100_3, 100_4, ..., 100_n-1, 100_n are all devices such as various sensors, information providing devices, convenience facilities, game machines, security devices, and home appliances. There is no limit. For example, the IoT device may include all household appliances such as a refrigerator, an oven, a washing machine, a cleaner, a printer, a fax, a multifunction printer, a webcam, a television, a video, a DVD player, an audio, an electric recorder, an interphone, an air conditioner, a heater, a dehumidifier and the like that can communicate. . In addition, IoT devices can be used to protect the environment from tangible objects and surroundings, including temperature sensors, humidity sensors, thermal sensors, gas sensors, illuminance sensors, ultrasonic sensors, remote sensing sensors, synthetic aperture radars, radars, position sensors, motion sensors, and image sensors. It may include various sensors from which information can be obtained.

The mobile terminal 200 includes a memory means such as a smart phone, a tablet PC, a personal digital assistant (PDA), a web pad, or the like, and is operated by mounting a microprocessor. It can be made of a terminal with the capability, and various applications can be installed to provide various services to the user.

The mobile terminal 200 may include a GNSS receiver 210, a communicator 230, and a service app 250.

The GNSS receiver 210 may receive a GNSS signal from a plurality of global navigation satellite system (GNSS) satellites. The GNSS receiver 210 may process the received GNSS signal to obtain a current position (latitude and longitude) of the mobile terminal 200.

The communication unit 230 may exchange various information and data with the server 300 through a communication network (not shown). In addition, the communication unit 230 may support wireless communication through a Bluetooth, Wi-Fi (Wi-Fi) and / or Low Power Wide Area (LPWA) network, such as LoRa, Sigfox.

The service app 250 may measure the result of signal strength between the plurality of IoT devices 100_1, 100_2, 100_3, 100_4,..., 100_n-1, 100_n and the mobile terminal 200 and when the corresponding signal strength is measured, the mobile terminal 200. Location information) may be provided to the server 300. Alternatively, according to an embodiment, the service application 250 may determine the location of the IoT device by using the signal strength measurement result between the positioning target IoT device and the mobile terminal 200 and the location information of the mobile terminal 200 when the corresponding signal strength is measured. You can also measure.

The service application 250 may receive a wireless signal strength between the pre-registered IoT device and the new location target IoT device, and transmit the received wireless signal strength to the server 300 to provide a range of possible existence of the new location target IoT device. Of course, according to an embodiment, the service app 250 receives the location information of the pre-registered IoT device from the server 300, and directly targets the new location using the wireless signal strength between the pre-registered IoT device and the new location target IoT device. It is also possible to calculate the range of possible IoT device existence.

The wireless signal strength between the pre-registered IoT device and the new positioning target IoT device may be transferred from the new positioning target IoT device to the service app 250. Of course, it is also possible to implement such that the information is transferred from the registered IoT device to the service application 250.

The server 300 is a signal strength measurement result and a corresponding signal strength between the plurality of IoT devices 100_1, 100_2, 100_3, 100_4,..., 100_n-1, 100_n and the mobile terminal 200 transmitted from the mobile terminal 200. When measured, the location of the plurality of IoT devices 100_1, 100_2, 100_3, 100_4,..., 100_n-1, 100_n may be measured by using the location information of the mobile terminal 200. According to an exemplary embodiment, location information of the IoT device may be received and stored from the mobile terminal 200.

The server 300 may receive the wireless signal strength between the pre-registered IoT device and the new positioning target IoT device from the mobile terminal 200 to estimate a possible range of the new positioning target IoT device. The server 300 may register the location information of the newly-targeted IoT device, which is positioned using the mobile terminal 200, as the location information of the corresponding device. If the location of the new location target IoT device that has been positioned using the mobile terminal 200 is not within the range of possible existence, the server 300 may cause the mobile terminal 200 to perform location measurement of the new location target IoT device again. have.

2 is a conceptual diagram provided for explaining a mobile terminal-enabled IoT device positioning according to an embodiment of the present invention.

3 is a flowchart illustrating a method for positioning a mobile device using an IoT device according to an embodiment of the present invention.

1 to 3, the first IoT device 100_1 may be connected to the mobile terminal 200 in a short range wireless communication state in a state where the first IoT device 100_1 is installed at the location D1 (S310).

Next, the mobile terminal 200 may measure wireless signal strengths R11, R12, and R13 between the first IoT device 100_1 and the mobile terminal 200 at at least three different positions P1, P2, and P3. There is (S320). In operation S320, the mobile terminal 200 may obtain positions P1, P2, and P3 using the GNSS signals received through the GNSS receiver 210.

Subsequently, the first location D1 is measured by using the location information P1, P2, and P3 of the mobile terminal measured in step S320 and the signal strength information R11, R12, and R13 of the first IoT device 100_1. It may be (S330). Step S330 may be performed in the service application 250 of the mobile terminal 200 or may be performed in the server 300. The server 300 may receive the location information P1, P2, and P3 of the portable terminal and the signal strength information R11, R12, and R13 of the first device from the portable terminal 200.

Next, the location D1 of the first IoT device 100_1 may be registered in the server 200 (S340).

When the number of IoT devices whose location is registered in the server 300 is equal to or less than a predetermined reference (for example, two or less), the location of the IoT device positioned by the method described with reference to FIG. 3 may be directly registered in the server 300. have.

On the other hand, when the number of registered IoT devices exceeds a predetermined number (eg, when three or more IoT devices are registered), the location of the new IoT device may be located and registered in the server 300 by the method described below. .

4 and 5 are conceptual diagrams provided to explain the estimation of the range of possible existence of a new IoT device using a registered IoT device according to an embodiment of the present invention, and FIG. 6 is a previously registered view according to an embodiment of the present invention. IoT Device Use This is a flowchart illustrating a new IoT device positioning method.

IoT installed in the location Dn while the location information of the IoT devices 100_1, 100_2, and 100_3 installed in the locations D1, D2, and D3 is already registered in the server 300 with reference to FIGS. 4 to 6. A method of positioning the device 100_n will be described. Hereinafter, the IoT devices 100_1, 100_2, and 100_3 are referred to as registered IoT devices, and the IoT device 100_n is referred to as a new IoT device.

First, wireless signal strengths R _1n , R _2n , and R _3n between the new IoT device 100_n and the plurality of pre-registered IoT devices 100_1, 100_2, and 100_3 may be measured (S610). For example, the new IoT device 100_n may measure the wireless signal strength of the plurality of pre-registered IoT devices 100_1, 100_2, and 100_3.

Next, a possible range Dn 'of the new IoT device 100_n may be estimated (S620). In step S620, the range Dn ′ may be estimated using the positions D1, D2, and D3 and the radio signal strengths R _1n , R _2n , and R _3n . For example, as illustrated in FIG. 5, a range Dn overlaps circles 10, 20, and 30 obtained according to radio signal strengths R _1n , R _2n , and R _3n around positions D1, D2, and D3. ') May be estimated as the possible range of the new IoT device 100_n.

The new IoT device 100_n combines the wireless signal strengths R _1n , R _2n , and R _{3n together} with identification information (eg, Mac address or unique IP, etc.) of the registered IoT devices 100_1, 100_2, and 100_3. 200).

Step S620 may be performed in the mobile terminal 200 or in the server 300.

When step S620 is performed in the mobile terminal 200, the mobile terminal 200 may identify wireless signal strengths R _1n , R _2n , and R _3n and identification information of the registered IoT devices 100_1, 100_2, and 100_3. Is received from the new IoT device 100_n, the location (D1, D2, D3) information may be provided from the server 300.

Meanwhile, when step S620 is performed by the server 300, the server 300 may identify identification information of the wireless signal strengths R _1n , R _2n , and R _3n and the registered IoT devices 100_1, 100_2, and 100_3. Received from the mobile terminal 200, the location (D1, D2, D3) information may use the information registered in the server (300).

Next, the location Dn of the new IoT device 100_n may be measured using the mobile terminal 200 (S630). Positioning (Dn) of the new IoT device 100_n using the mobile terminal 200 in step S630 may be performed in the same manner as in steps S310 to S330 of FIG. 3.

Meanwhile, according to the exemplary embodiment, the steps S320 and S330 may be performed at the same time or the order thereof may be changed.

Thereafter, the mobile terminal 200 may determine whether the location Dn of the new IoT device 100_n positioned in the existence range Dn 'of the new IoT device 100_n is determined (S640). Step S640 may also be performed in the mobile terminal 200 or the server 300.

Then, if the position Dn of the new IoT device 100_n is in the existence range Dn 'of the new IoT device 100_n (S640-Y), the position Dn is set in the server 300 to the new IoT device 100_n. ) Can be registered as location information (S650).

Meanwhile, if the position Dn of the new IoT device 100_n is not within the existence range Dn 'of the new IoT device 100_n (S640-N), steps S630 to S640 may be repeated again. have.

Embodiments of the invention include a computer readable medium containing program instructions for performing various computer-implemented operations. This medium records a program for executing the method described so far. The media may include, alone or in combination with the program instructions, data files, data structures, and the like. Examples of such media include magnetic media such as hard disks, floppy disks and magnetic tape, optical recording media such as CDs and DVDs, floppy disks and program commands such as magnetic-optical media, ROM, RAM, flash memory, and the like. Hardware devices configured to store and perform such operations. Examples of program instructions include not only machine code generated by a compiler, but also high-level language code that can be executed by a computer using an interpreter or the like.

Although the preferred embodiments of the present invention have been described in detail above, the scope of the present invention is not limited thereto, and various modifications and improvements of those skilled in the art using the basic concepts of the present invention defined in the following claims are also provided. It belongs to the scope of rights.

Claims (8)

(a) communicating a first device and a portable terminal installed in a first location,
(b) measuring, by the portable terminal, the position of the portable terminal and the signal strength of the first device at at least three different positions;
(c) positioning the first location using location information of the portable terminal and signal strength information of the first device measured in step (b);
(d) registering the first location information of the first device with a server;
(e) measuring, by the second device, signal strength between a plurality of pre-registered devices including the first device and a second device installed at a second location;
(f) the server estimating a range in which the second device can exist using the signal strength between the plurality of pre-registered devices and the second device,
(g) communicating a connection between the second device and the portable terminal;
(h) measuring, by the portable terminal, the position of the portable terminal and the signal strength of the second device at at least three different positions;
(i) the server positioning the second location using location information of the mobile terminal and signal strength information of the second device measured in step (h);
(j) if the server is located within the range where the second location is located, the second device may be registered as the location information of the second device, and
(k) the server performing the second device location measurement via the portable terminal again if the location of the second location is not within the range where the second device can exist. delete delete In claim 1,
The location of the mobile terminal,
IoT device positioning method measured using the GNSS signal received from the portable terminal. A mobile terminal communicating with a first device installed at a first location and measuring signal strength of the first device at at least three different locations; and
And a server that registers first location information of the first device, which is located by using the measured location information of the portable terminal and signal strength information of the first device.
The portable terminal transmits signal strength between a plurality of pre-registered devices including the first device and a second device installed at a second location to the server,
The server estimates a range in which the second device can exist using the signal strength between the plurality of registered devices and the second device,
Signal strength between the plurality of pre-registered devices and the second device is measured at the second device,
The portable terminal is communicatively connected with the second device, and measures the location of the portable terminal and the signal strength of the second device at at least three different locations.
The server locates the second location by using the location information of the portable terminal and the signal strength information of the second device measured in a state of being connected with the second device, and the second location is measured by the second location. If the device exists in a range that can exist, the second location is located as the location information of the second device, and if the location of the second location does not exist in the range where the second device can exist, IoT device positioning system for performing the second device position measurement again via. delete delete In claim 5,
The location of the mobile terminal,
IoT device positioning system measured using the GNSS signal received from the portable terminal.

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