KR-20260067194-A - POSITION MEASUREMENT SYSTEM AND METHOD

Abstract

A location measurement system according to an embodiment of the present invention may be composed of: a terminal device that communicates data through an Internet of Things (IoT) communication network; a gateway and a network server of the IoT communication network using the LoRa communication protocol; and a rescue center server that measures the location of the terminal device using a signal transmitted from the terminal device through the network server. The terminal device measures the received signal strength indicator (RSSI) of signals transmitted from three adjacent gateways and transmits it to the rescue center server through the IoT communication network, and the rescue center server measures the location of the terminal device from the received RSSIs and transmits a rescue response signal to the terminal device at the measured location.

Inventors

• 김해수
• 김상협

Assignees

• 경일대학교산학협력단
• 주식회사메타그라운드

Dates

Publication Date

20260512

Application Date

20241105

Claims (5)

1. In a position measurement system, A terminal device that communicates data through an Internet of Things (IoT) communication network; Gateway and network server of an Internet of Things communication network of the LoRa communication protocol; and It is composed of a structure center server that measures the location of the terminal device using a signal transmitted from the terminal device through the above network server, and The above terminal device measures the RSSI (received signal strength indicator) of signals transmitted from three adjacent gateways and transmits it to the above structure center server via the IoT communication network, and A system characterized by the above-mentioned structure center server measuring the location of the terminal device from the received RSSIs and transmitting a structure response signal to the terminal device at the measured location.
2. In paragraph 1, The above gateway may include an access point that communicates with the terminal device using the LoRa protocol, and The above structure center server stores a list and locations of the above gateways, and A system characterized by the above terminal device receiving location information of gateways from the above structure center server when powered on, and communicating via the LoRa protocol through an adjacent gateway.
3. In paragraph 1, A system characterized by the above terminal device having a distress request button, and when the pressing of the distress request button is detected, measuring the RSSI from three adjacent gateways, generating a distress request signal including its own identification information and the RSSIs of the three gateways, and transmitting it to the Internet of Things communication network.
4. A method for determining the location of a system comprising a terminal device, a gateway of an IoT communication network using the LoRa communication protocol, a network server, and a structure center server, A process in which the above terminal device measures the received signal strength indicator (RSSI) transmitted from three adjacent gateways using the LoRa communication protocol when a rescue request is made; The process of the above terminal device generating a distress request signal including the measured RSSIs of the gateways and its own identification information and transmitting it to an IoT communication network; and A method comprising the process of the above-mentioned rescue center server receiving a rescue request signal through an IoT communication network and measuring the location of the terminal device from the received RSSIs.
5. In paragraph 4, The above structure center server stores a list and locations of the above gateways and further comprises a process for the terminal device to connect to an IoT communication network, The process of the above terminal device connecting to the Internet of Things communication network is, The above terminal device requests communication according to the LoRa communication protocol from the above structure center server when the power is turned on; The above structure center server transmits location information of the gateways to the terminal device; and A method in which the above terminal device further includes the process of communicating via the LoRa protocol through an adjacent gateway according to the location information of the received gateways.

Description

Position Measurement System and Method The present invention relates to a location measurement system and method, and more particularly to a device and method capable of verifying the location of a person who has requested rescue through an Internet of Things communication network. Due to recent industrial developments and the pandemic, people are engaging in a significant amount of outdoor leisure activities. In particular, the number of hikers heading to mountainous regions for health and recreation is increasing. For instance, the annual number of visitors to national parks is estimated at approximately 40 million as of 2023. However, hikers often hike without adequate preparation and may attempt strenuous climbs while disregarding their physical capabilities. As the number of hikers rises, casualties from mountain accidents are also continuously increasing. In the event of a hiking accident, it is crucial for a stranded hiker to notify rescue teams of the incident and their location. Domestic mountainous terrain is very rugged depending on the region, and communication dead zones exist in these areas. When hiking in such dead zones, it can be difficult to report hiking accidents. Therefore, there is a need for Internet of Things (IoT) devices capable of reporting accidents and transmitting location information even in communication dead zones, such as public wireless networks. FIG. 1 is a diagram illustrating the structure of an Internet of Things communication network according to an embodiment of the present invention. FIG. 2 is a drawing illustrating the configuration of a terminal device according to an embodiment of the present invention. FIG. 3 is a flowchart illustrating the operation of a distress rescue system according to an embodiment of the present invention. Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the attached embodiments are merely examples intended to aid in understanding the present invention and are not intended to limit the invention. Furthermore, detailed descriptions regarding technologies that are obvious to those skilled in the art or easily derivable will be omitted. FIG. 1 is a diagram illustrating the structure of an Internet of Things communication network according to an embodiment of the present invention. For example, the Internet of Things communication network may be a low-power communication network, such as a long-range radio network (LoRa network). Referring to FIG. 1, the Internet of Things communication network may include a terminal device (110), a gateway (120), a network server (130), and a structure center server (140). In some embodiments, the Internet of Things communication network may omit at least one of the above components or additionally include other components. The terminal device (110) may be an Internet of Things device (IoT device). The terminal device (110) may be an electronic device capable of transmitting information including the identification information in an IoT network, having unique identification information in the IoT network. The terminal device (110) may process a set task by transmitting and/or receiving data using a low-power wireless communication module (e.g., a LoRaWAN (long range radio wide area network) communication module). The terminal device (110) according to an embodiment of the present invention is a device that can be carried by a user and may be provided to all users entering the IoT network. The terminal device (110) stores unique identification information. The terminal device (110) may transmit a distress signal, and may transmit the unique identification information of the terminal device (110) together when transmitting the distress signal. A gateway (120) may be located between a terminal device (110) and a network server and may communicate data using a configured communication protocol (e.g., LoRa protocol). Generally, the terminal device (110) may use a wireless communication link, and the gateway (120) and the network server (130) may use a wired communication link and/or a wireless communication link. For example, the gateway (120) and the network server (130) may be connected via a wired communication link using a LAN cable, or via a wireless communication link using an LTE modem. In an embodiment of the present invention, three or more gateways (120) may be installed, and signals transmitted from the terminal device (110) may be received at three or more gateways (120). A network server (130) can register a terminal device (110) and a gateway (120) and set internal parameters. The network server (130) can monitor the status of the terminal device (110) and/or the gateway (120). The network server (130) can communicate with the terminal device (110) and the gateway (120) based on a set communication standard (e.g., LoRaWAN), and can parse data transmitted from the terminal device (110) and store it in a datab