KR101633347B1 - Automatic distress beacon and identifies the location reporting system using smart devices - Google Patents

Automatic distress beacon and identifies the location reporting system using smart devices Download PDF

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Publication number
KR101633347B1
KR101633347B1 KR1020150119412A KR20150119412A KR101633347B1 KR 101633347 B1 KR101633347 B1 KR 101633347B1 KR 1020150119412 A KR1020150119412 A KR 1020150119412A KR 20150119412 A KR20150119412 A KR 20150119412A KR 101633347 B1 KR101633347 B1 KR 101633347B1
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South Korea
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information
beacon
unit
smart device
location identification
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KR1020150119412A
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Korean (ko)
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정선진
김시수
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정선진
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    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
    • G08B21/02—Alarms for ensuring the safety of persons
    • G08B21/0202—Child monitoring systems using a transmitter-receiver system carried by the parent and the child
    • G08B21/0277—Communication between units on a local network, e.g. Bluetooth, piconet, zigbee, Wireless Personal Area Networks [WPAN]
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
    • G01S19/01—Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
    • G08B21/02—Alarms for ensuring the safety of persons
    • G08B21/0202—Child monitoring systems using a transmitter-receiver system carried by the parent and the child
    • G08B21/0205—Specific application combined with child monitoring using a transmitter-receiver system
    • G08B21/0211—Combination with medical sensor, e.g. for measuring heart rate, temperature
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
    • G08B21/02—Alarms for ensuring the safety of persons
    • G08B21/0202—Child monitoring systems using a transmitter-receiver system carried by the parent and the child
    • G08B21/0261—System arrangements wherein the object is to detect trespassing over a fixed physical boundary, e.g. the end of a garden
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
    • G08B21/02—Alarms for ensuring the safety of persons
    • G08B21/0202—Child monitoring systems using a transmitter-receiver system carried by the parent and the child
    • G08B21/0269—System arrangements wherein the object is to detect the exact location of child or item using a navigation satellite system, e.g. GPS
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
    • G08B21/18—Status alarms
    • G08B21/182—Level alarms, e.g. alarms responsive to variables exceeding a threshold
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B25/00—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems
    • G08B25/01—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems characterised by the transmission medium
    • G08B25/016—Personal emergency signalling and security systems
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B3/00—Audible signalling systems; Audible personal calling systems
    • G08B3/10—Audible signalling systems; Audible personal calling systems using electric transmission; using electromagnetic transmission
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B5/00—Visible signalling systems, e.g. personal calling systems, remote indication of seats occupied
    • G08B5/22—Visible signalling systems, e.g. personal calling systems, remote indication of seats occupied using electric transmission; using electromagnetic transmission
    • G08B5/36—Visible signalling systems, e.g. personal calling systems, remote indication of seats occupied using electric transmission; using electromagnetic transmission using visible light sources

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • General Health & Medical Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Child & Adolescent Psychology (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Electromagnetism (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Remote Sensing (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Cardiology (AREA)
  • Computer Security & Cryptography (AREA)
  • Alarm Systems (AREA)
  • Transmitters (AREA)

Abstract

The present invention relates to an automatic distress notification system using a location identification beacon and a smart device. More specifically, during fishing activities, it is possible to prevent accidental accidents by receiving nearby crest information, and when a fishing vessel or a person aboard the vessel automatically detects the temperature when a marine accident occurs, transmitted from

Figure 112015082322467-pat00001
By receiving the satellite signal at the GPS receiver and accurately grasping the current position of the victim and transmitting the structure request signal including the position information and the submersion information to the control center and the emergency communication network and the surrounding fishing line, Identification Beacons and smart devices send and receive information in a low-power Bluetooth manner, so that if the distance between two devices is out of a certain range during fishing activities, it is determined that the sensing range is out of range. To an automatic distress reporting system using a location identification beacon and a smart device, which have an advantage in that the sensor unit can be relieved even if the sensor unit is unknown.

Figure 112015082322467-pat00002

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic distress notification system using location identification beacons and smart devices,

The present invention relates to an automatic distress notification system using a location identification beacon and a smart device. More specifically, during fishing activities, it is possible to prevent accidental accidents by receiving nearby crest information, and when a fishing vessel or a person aboard the vessel automatically detects the temperature when an accident occurs, The GPS receiver receives the satellite signal from the GPS receiver and accurately grasps the current position of the victim and transmits the structure request signal including the position information and the submersion information to the control center and the emergency communication network and the surrounding fishing line, The location identification beacon and the smart device send and receive information by the low power Bluetooth method. When the distance between the two devices is out of a predetermined range, it is determined that the sensing range is out of range. The sensor can be relieved even if the sensor part is not known. It relates to the automatic distress beacon reporting system used to identify the location and smart devices so.

Fishing vessels account for a considerable proportion of disasters on the sea. Fishing is an industrial sector that is most vulnerable to natural disasters, compared to any other industry, as it has great potential for sea production.

Fishing accidents are often caused by collisions, damage to machinery, abandonment near the harbor, and closed ropes. In addition, there are many cases of collision between a cargo ship operating on the port of entry and exit of a large port and a fishing vessel crossing the port, , There are many cases in which small fishing vessels and ships are not equipped with devices or systems for relatively distress or emergencies. More seriously, most of the vessels less than 10 tons are operated by a single person, and even if an accident occurs, there is often no way or means to notify the person of the accident, which leads to the disappearance or death. In some cases, the cost of purchasing an excessive rescue device may be burdensome. In reality, it is a reality that the operation system is insufficient and the attachment of the rescue device is insufficient.

Given these circumstances, it can be assumed that the severity of the accident of small fishing vessels. It is desirable to introduce a device and system that can identify the location of small fishing boats or operators and maintain continuous communication in order to prevent accidents of such small fishing vessels and to take prompt action in case of a marine accident.

Prior Art Document KR Patent Publication No. 2011-0075090 (published on July 6, 2011)

Disclosure of the Invention The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide a system and a method for preventing weather accidents, It is an object of the present invention to provide an automatic distress reporting system using a location identification beacon and a smart device, which helps to inform the location of a distresser by transmitting location information to a control center.

According to an aspect of the present invention, there is provided an automatic distress reporting system using a location identification beacon and a smart device, the system comprising: a sensor unit for sensing a temperature and determining whether the beacon is submerged; A first power source for supplying power to each component of the position identification beacon, a GPS receiver for receiving a satellite signal transmitted from the GPS satellite on the basis of the current position in real time, and a sensor unit and a GPS receiver A first transmitter for receiving current position information and winking information in real time, and transmitting the information to a smart device in a low power Bluetooth manner;

A beacon information receiving unit for receiving the current location information and the subwoofer information in a low power Bluetooth manner through a first transmitter of the location identification beacon, To the emergency contact network of the victim stored in the control center, the surrounding fishing boat, and the memory unit, and a second sensor for detecting the height of the wave A wave height information receiving unit for receiving information indicating the wave height value due to the wind intensity by the wireless communication; a wave height information receiving unit for receiving information from the wave height information receiving unit, If the location is within a certain range based on the smart device, periodically notify the danger signal And a second power supply unit for supplying power to the respective components of the smart device, and a second power supply unit for supplying power to the fishing boats or the ship when the beacon information is received by the first alarm unit and the beacon information receiving unit. A smart device that is capable of communicating with the smart device.

In addition, when the sensor unit detects a body temperature of a victim attached to a part of a body part of a victim, when a temperature at which a sensation of the temperature of the victim is detected by the influence of water temperature is lowered by a predetermined temperature or lower within a predetermined time, The sensor unit determines that the sensor unit is in the submerged state, transmits the submergence information to the first transmitter, and transmits the submersion information to the first transmitter every time the sensed temperature falls to a predetermined interval.

In addition, the first transmitter of the location identification beacon and the beacon information receiver of the smart device transmit / receive information in a low-power Bluetooth manner, so that when the distance between the location identification beacon and the smart device exceeds a predetermined range during the fishing operation, It is possible to automatically request the structure to be transmitted to the second transmitting unit by requesting the structure of the beacon.

According to the present invention, by providing the wave height information receiving unit, it is possible to prevent a marine accident in advance by receiving wave height information in the vicinity of the fishing activity.

According to the present invention, when a fisherman or a shipborne person aboard a vessel detects a temperature in the event of a marine accident, the sensor automatically detects the temperature and determines whether the vessel is submerged. The GPS receiver receives a satellite signal transmitted from the GPS satellite, And the structure request signal including the location information and the submersion information is transmitted to the control center, the emergency communication network and the surrounding fishing line, thereby making it possible to quickly and accurately reconstruct the victim.

According to the present invention, the location identification beacon and the smart device send and receive information in a low-power Bluetooth manner, so that when the distance between the two devices is out of a predetermined range during the fishing operation, it is determined that the sensing range is out of range, , So that the structure is automatically requested to be submerged, so that it can be relieved even if the sensor part is not known.

1 is a conceptual diagram of an automatic distress report system using a location identification beacon and a smart device,
FIG. 2 is a view showing a location identification beacon 100 before fishing activity, the installation of the smart device 200 and the use of the memory unit 210,
3 illustrates the role of the GPS receiver 140 and the wave information receiver 240,
4 is a view showing the role of the first alarm unit 220 by the peak information receiver 240,
5 illustrates the role of the sensor unit 110 and the GPS receiver 140 in the event of a maritime accident,
6 is a diagram showing a stepwise transmission according to a temperature change of the sensor unit 110,
7 is a diagram showing the communication between the first transmitting unit 150 and the beacon information receiving unit 260, the communication thereof, and the role of the second alarm unit 230, and FIG.
FIG. 8 is a diagram showing a structure request through the second transmission unit 250. FIG.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the drawings, the same reference numerals are used to designate the same or similar components throughout the drawings. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear. In addition, the preferred embodiments of the present invention will be described below, but it is needless to say that the technical idea of the present invention is not limited thereto and can be variously modified by those skilled in the art.

FIG. 1 is a conceptual diagram of an automatic distress notification system using a location identification beacon and a smart device, FIG. 2 is a diagram illustrating a location identification beacon 100 before fishing activity, the installation of the smart device 200, and the use of the memory unit 210 FIG. 3 illustrates the role of the GPS receiver 140 and the peaking information receiver 240, FIG. 4 illustrates the role of the first alerter 220 by the peaking information receiver 240, FIG. 5 is a view showing the role of the sensor unit 110 and the GPS receiving unit 140 in the event of a maritime accident, FIG. 6 is a view showing a stepwise transmission according to the temperature change of the sensor unit 110, FIG. 8 is a diagram illustrating communication between the first transmitter 150 and the beacon information receiver 260 and the communication thereof and the role of the second alarm unit 230. FIG. 8 illustrates a structure request through the second transmitter 250 Fig.

1, the system includes a sensor unit 110, an illumination unit 120, a first power source unit 130, a GPS receiver unit 140, A first alarm unit 220, a second alarm unit 230, a second power unit 230, a waveguide information receiving unit (not shown), a first alarm unit 150, and a memory unit 210. The first alarm unit 220, 240, a second transmitter 250, and a beacon information receiver 260. [

More specifically, the position identification beacon 100 mounted on a part of the body of the victim includes a sensor unit 110 for detecting whether the beacon 100 is submerged by sensing the temperature, A first power supply unit 130 for supplying power to each component of the position identification beacon 100 and a second power supply unit 130 for supplying a satellite signal transmitted from the GPS satellite 2 on the basis of the current position, A first transmitter 150 for receiving current position information and wakeup information from the sensor unit 110 and the GPS receiver 140 in real time and transmitting them to the smart device 200 in a low power Bluetooth manner, .

The smart device 200 mounted on a fishing boat or a ship includes a memory unit 210 storing personal information of the operator corresponding to each location identification beacon and an emergency communication network, a first transmitter 150 of the location identification beacon 100, A beacon information receiving unit 260 for receiving current position information and wavenumber information in a low power Bluetooth manner via a control center 3 and a peripheral fishing line 5 and a memory unit 210 A second transmitter 250 for transmitting the data to the distress communication network 4 of the victim by wireless communication, a sensor 1a attached to the buoy 1 installed in the vicinity of the sea, The wave height information receiving unit 240 receives information indicating the wave height value due to the wind intensity, and the wave height information receiving unit 260 receives the wave height information, Attached to buoy (1) When the position of the sensor 1a is within a predetermined range based on the smart device 200, the first alarm unit 220 periodically notifies the danger signal, and the beacon information receiving unit 260 receives information A second alarm unit 230 for automatically informing the user of an alarm sound and a second power supply unit 270 for supplying power to each component of the smart device 200.

In addition, the sensor unit 110 of the location identification beacon 100 mounted on a part of the body of the victim is installed in a part of the body part of the victim and senses the body temperature of the victim. When the accident occurs, The sensor unit 110 determines that the sensor unit 110 is in a drowning state and transmits the drowning information to the first transmitter 150. If the detected temperature is greater than the predetermined temperature And transmits the information to the first transmitter 150 every time the vehicle goes down.

The first transmitting unit 150 of the location identifying beacon 100 and the beacon information receiving unit 260 of the smart device 200 transmit and receive information in a low power Bluetooth manner to thereby transmit the location beacon 100, If the distance of the beacon 200 is out of a predetermined range, it is determined that it is out of the sensing range, and it is automatically transmitted to the second transmitter 250 to request the structure.

For example, the prevention before occurrence of a marine accident and the action after occurrence will be described with reference to FIG. 2 to FIG. 6,

Referring to FIG. 2, a fishermen carrying a fishing activity mounts a location identification beacon 100 on a body part, mounts the smart device 200 on a fishing boat or a ship, Stores the personal information of the operator corresponding to the location identification beacon 100 of each operator and the emergency communication network.

3, the GPS receiver 140 of the location identification beacon 100 transmits and receives the satellite signals transmitted from the GPS satellites 2 in real time before the occurrence of a maritime accident, The controller 240 calculates the height of the wave according to the height at which the sensor 1a attached to the buoy 1 disposed on the marine environment is shaken and extracts information indicating the value of wave height due to the wind intensity, Receive in real time by communication.

4, when the peak value indicated by the peak information receiving unit 240 is equal to or higher than the threshold value and the position of the sensor attached to the buoy is within a predetermined range based on the smart device, the first alarm unit 220 transmits a danger signal Periodically.

Referring to FIG. 5, when an accident occurs and a person is dropped into the sea, the sensor unit 110, which senses the body temperature of the victim of the location identification beacon 100 mounted on a part of the body of the operator, When the temperature is lowered by at least 3 ° C. within 10 seconds, the sensor unit 110 determines that the sensor unit 110 is in a drowning state, and determines the subwoofer information including the temperature sensed before the occurrence of the marine accident and the sensed temperature as primary To the first transmitting unit 150. The GPS receiving unit 140 receives the satellite signals transmitted from the GPS satellites 2 and transmits the generated position information to the first transmitting unit 150. [

Referring to FIG. 6, in the information transmitted from the sensor unit 110 to the first transmitting unit 150, the first transmitting unit 150 sequentially transmits the submersion information to the first transmitting unit 150, .

7, the beacon information receiving unit 260 of the smart device 200 receives the current position information and the sinker information of the victim in a low-power Bluetooth manner through the first transmitting unit 150 of the position identifying beacon 100 And the beacon information receiving unit 260 receiving the information transmits a signal to the second alarm unit 230 to sound an alarm and transmits information to the second transmitter 250 in order to make a structure request.

8, the information received via the beacon information receiving unit 260 of the smart device 200 at the second transmitter 250 is transmitted to the control center 3 and the emergency communication network 4 ) To the peripheral fishing line 5 to request the structure.

The first transmitting unit 150 of the location identifying beacon 100 and the beacon information receiving unit 260 of the smart device 200 transmit and receive information in a low-power Bluetooth manner, It is determined that the distance from the device 200 is out of the sensing range and the latest position information is automatically transmitted to the second transmitter 250 as the fishing line departure and the submerged state of the location identification beacon 100, Lt; / RTI >

The smart device 200 may be a smart phone, a tablet PC, or the like. An application providing a distress notification service may be downloaded and used or an embedded application may be used to operate the device.

It will be apparent to those skilled in the art that various modifications, substitutions and substitutions are possible, without departing from the scope and spirit of the invention as disclosed in the accompanying claims. will be. Therefore, the embodiments disclosed in the present invention and the accompanying drawings are intended to illustrate and not to limit the technical spirit of the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments and the accompanying drawings . The scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of equivalents should be construed as falling within the scope of the present invention.

1 - Buoy 1a - Sensor
2 - GPS satellite 3 - Control center
4 - Emergency network 5 - Surrounding fishing boat
100 - Location Identification Beacon 200 - Smart Device
110 - sensor unit 210 - memory unit
120 - illumination unit 220 - first alarm unit
130 - first power supply unit 230 - second alarm unit
140 - GPS receiver 240 - Fargo information receiver
150 - first output unit 250 - second output unit
260 - Beacon information receiver
270 -

Claims (3)

A sensor unit for sensing the temperature to determine whether to be submerged,
An illumination unit for automatically turning on the lights to display the position information when the sensor unit determines the submersion,
A first power source for supplying power to the location identification beacon,
A GPS receiving unit for receiving, in real time, a satellite signal transmitted from a GPS satellite based on the current position; and
A first transmitter for transmitting current position information and wakeup information from the sensor unit and the GPS receiver in real time to the smart device in a low power Bluetooth manner,
A location identification beacon mounted on a body part of the operator; And
A memory unit for storing the personal information of the operator corresponding to each location identification beacon and the emergency communication network,
A beacon information receiving unit for receiving current position information and wavenumber information in a low power Bluetooth manner through a first transmitter of the position identification beacon,
A second transmitter for transmitting the current location information and the submersion information generated from the beacon information receiving unit to the emergency contact network of the victim stored in the control center,
A wave information receiver for calculating the wave height according to the height of the sensor attached to the buoy installed in the surrounding sea during the voyage and receiving the value of wave height due to wind intensity by wireless communication,
A first alarm unit for periodically notifying a danger signal when the value of the wave height due to wind strength is equal to or higher than a threshold value and the position of the sensor attached to the buoy is within a predetermined range based on the smart device, ,
A second alarm unit that automatically sounds an alarm sound when the beacon information receiving unit receives the information of the state of being taken in by the beacon,
A second power supply unit for supplying power to each component of the smart device,
And a smart device mounted on a fishing boat or ship
Lt; / RTI >
The sensor part of the location identification beacon
If the temperature sensed by the sensation of the temperature of the distressed person who is sensed by the sensed victim is lower than a certain temperature within a certain period of time during a marine accident by sensing the body temperature of the victim attached to a part of the body part of the victim, Transmits wavenumber information to the first transmitter, transmits wavenumber information to the first transmitter every time the sensed temperature falls to a predetermined interval thereafter,
The first beacon of the location beacon and the beacon information receiving unit of the smart device send and receive information in a low power Bluetooth manner so that if the distance between the location beacon and the smart device exceeds the predetermined range during the fishing operation, The automatic distress reporting system using the location identification beacon and the smart device that enables the lifesaving structure of the sensor unit to be performed by requesting the structure by automatically transmitting the beacon's deviation from the fishing line and the drowning state to the second sending unit. delete delete
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KR101836831B1 (en) * 2017-08-28 2018-03-09 (주)에스알씨 Distress response apparatus for ship based on wearable devices
KR20180033833A (en) * 2016-09-26 2018-04-04 에스케이텔레콤 주식회사 Method and Apparatus for Searching Sufferer on the Sea
KR20180042655A (en) * 2016-10-18 2018-04-26 주식회사 비온시이노베이터 Ship emergency response system
KR20190033878A (en) * 2017-09-22 2019-04-01 삼성중공업 주식회사 System and method for recognizing marine distress situation
KR102068174B1 (en) * 2019-06-12 2020-01-20 에이티온 주식회사 System for asset management with low power consumption
KR20210045168A (en) 2019-10-16 2021-04-26 주식회사 지노시스 Distress reporting and rescue request system of web-based using nfcqr
KR20220029880A (en) 2020-09-02 2022-03-10 한국항로표지기술원 Wireless alarm signal generator for marine lifesaving and alarm signal generating system for marine lifesaving using the same
KR20220102792A (en) * 2021-01-14 2022-07-21 한국해양대학교 산학협력단 Marine safety accident prevention system using location-based buoys

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KR20180033833A (en) * 2016-09-26 2018-04-04 에스케이텔레콤 주식회사 Method and Apparatus for Searching Sufferer on the Sea
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KR20180042655A (en) * 2016-10-18 2018-04-26 주식회사 비온시이노베이터 Ship emergency response system
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KR20190033878A (en) * 2017-09-22 2019-04-01 삼성중공업 주식회사 System and method for recognizing marine distress situation
KR101984663B1 (en) * 2017-09-22 2019-06-03 삼성중공업 주식회사 System and method for recognizing marine distress situation
KR102068174B1 (en) * 2019-06-12 2020-01-20 에이티온 주식회사 System for asset management with low power consumption
KR20210045168A (en) 2019-10-16 2021-04-26 주식회사 지노시스 Distress reporting and rescue request system of web-based using nfcqr
KR20220029880A (en) 2020-09-02 2022-03-10 한국항로표지기술원 Wireless alarm signal generator for marine lifesaving and alarm signal generating system for marine lifesaving using the same
KR102448955B1 (en) * 2020-09-02 2022-09-28 한국항로표지기술원 Wireless alarm signal generator for marine lifesaving and alarm signal generating system for marine lifesaving using the same
KR20220102792A (en) * 2021-01-14 2022-07-21 한국해양대학교 산학협력단 Marine safety accident prevention system using location-based buoys
KR102512939B1 (en) * 2021-01-14 2023-03-21 한국해양대학교 산학협력단 Marine safety accident prevention system using location-based buoys

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