총 44페이지
29페이지 본문시작
Prometheus
moves around
Engineering (KRISO) says, “The ‘underwater navigation and
ⓒGEOMAR
in the ocean? In
docking technology’ developed with our own technology is
fact, it is actually
one of the core technologies of ISIMI, which ensures that
being used for
the wide seabed can be freely explored without connecting
deep-searesearch.
cables.” AUVs have many advantages over submersibles
An Autonomous
in which humans are involved in control, but there are still
U n m a n n e d
many technical problems to be solved for fully autonomous
Vehicle (AUV),
operation,andtheyareunderresearch.
▲ UVsoperateautomaticallywithoutremote
controlbyhumans.
c o m m o n l y
referred to as an underwater drone, is an unmanned robotic
*Hydrothermal zone: A chimney-shaped hole that allows hot water and gas to
springoutfromtheground,bothonlandandontheseabed.
system designed for underwater investigations and tasks.
AUVs operate autonomously, relying on internal power
sources, pre-programmed instructions, and built-in sensors.
They are primarily used for underwater exploration and
HowDoUnmannedSubmersiblesWork?
simpleoperations.AkeyadvantageofAUVsistheirreduced
reliance on specialized personnel compared to ROVs,
(1)ROV
resultingincostandtimesavingsduringunderwatermissions.
An ROV primarily consists of four vertical propellers and
AUVs are purpose-built, with their design and capabilities
six horizontal propellers to facilitate controlled movement
tailoredtospecificmissionobjectives.Onceconstructed,their
during its descent to the desired underwater destination. Its
functionalityisfixedandcannotbealteredforpurposesother
designincorporatesastreamlinedhulltominimizeresistance,
thantheirintendedmission.IncontrasttoROVs,whichcanbe
and a combination of vertically and horizontally positioned
remotelycontrolledandadjustedinreal-timefromthesurface,
propellers to maintain a state of complete equilibrium,
AUVs lack external control mechanisms and must possess
ensuring it remains level without tilting. Additionally, the
the capability to self-navigate, recognize their surroundings,
ROVistetheredtothemothershiponthesurfaceviaacable.
and navigate while avoiding obstacles. Therefore, the ability
This cable not only provides real-time power to the ROV
to follow a pre-defined path is crucial for AUVs, making
but also enables the submersible to remain submerged in the
object recognition and path adjustment technologies essential
deep sea for extended durations. Furthermore, information
componentsoftheiroperation.
from the sensors onboard the submersible and operational
Today,AUVtechnologyisactivelyusedinresourcesurveys
commands are transmitted through these connected cables.
and military fields, mainly in the so-called “cruise type”
However, underwater conditions pose challenges such as
suitableforlong-distanceobservationsandarealsosuccessful
limitedGPSfunctionality,restrictedvisibility,andsignificant
in academic research such as observation of waters around
fluctuationsdependingontheaquaticenvironment.Therefore,
glaciersorhydrothermalzones.*InKorea,variousAUVsare
specialized sensors tailored for underwater use and specific
beingdeveloped,includingtheAUV“IntegratedSubmersible
dataprocessingtechniquesareemployed.
for Intelligent Mission Implementation” (ISIMI) developed
OneoftheprominentfeaturesofROVsistheiruseofvarious
by the Korea Institute of Marine Science and Technology,
equipmentthatreliesonsoundwaves,withsonarbeingakey
and the “Hanwha AUV” and “Mine Killer-Boto” developed
component. Sonar is a device that emits and receives sound
by the Korean company Hanwha. Among them, ISIMI has
waves. When sonar emits a sound wave, and it encounters
the advantage of being able to operate autonomously by self-
an object in its path, the sound wave bounces back. In such
judgment, control, and self-position recognition underwater,
cases, the sonar calculates the distance between the object in
and to perform tasks repeatedly by traveling back and forth
front and the submersible by measuring the time it takes for
between underwater bases. Principal Researcher Lee Pan-
the sound wave to be generated and returned. For example,
mook of the Korea Research Institute of Ships and Ocean
if it takes one second for a sonar to emit a sound wave and
27
OCTOBER 2023
moves around
Engineering (KRISO) says, “The ‘underwater navigation and
ⓒGEOMAR
in the ocean? In
docking technology’ developed with our own technology is
fact, it is actually
one of the core technologies of ISIMI, which ensures that
being used for
the wide seabed can be freely explored without connecting
deep-searesearch.
cables.” AUVs have many advantages over submersibles
An Autonomous
in which humans are involved in control, but there are still
U n m a n n e d
many technical problems to be solved for fully autonomous
Vehicle (AUV),
operation,andtheyareunderresearch.
▲ UVsoperateautomaticallywithoutremote
controlbyhumans.
c o m m o n l y
referred to as an underwater drone, is an unmanned robotic
*Hydrothermal zone: A chimney-shaped hole that allows hot water and gas to
springoutfromtheground,bothonlandandontheseabed.
system designed for underwater investigations and tasks.
AUVs operate autonomously, relying on internal power
sources, pre-programmed instructions, and built-in sensors.
They are primarily used for underwater exploration and
HowDoUnmannedSubmersiblesWork?
simpleoperations.AkeyadvantageofAUVsistheirreduced
reliance on specialized personnel compared to ROVs,
(1)ROV
resultingincostandtimesavingsduringunderwatermissions.
An ROV primarily consists of four vertical propellers and
AUVs are purpose-built, with their design and capabilities
six horizontal propellers to facilitate controlled movement
tailoredtospecificmissionobjectives.Onceconstructed,their
during its descent to the desired underwater destination. Its
functionalityisfixedandcannotbealteredforpurposesother
designincorporatesastreamlinedhulltominimizeresistance,
thantheirintendedmission.IncontrasttoROVs,whichcanbe
and a combination of vertically and horizontally positioned
remotelycontrolledandadjustedinreal-timefromthesurface,
propellers to maintain a state of complete equilibrium,
AUVs lack external control mechanisms and must possess
ensuring it remains level without tilting. Additionally, the
the capability to self-navigate, recognize their surroundings,
ROVistetheredtothemothershiponthesurfaceviaacable.
and navigate while avoiding obstacles. Therefore, the ability
This cable not only provides real-time power to the ROV
to follow a pre-defined path is crucial for AUVs, making
but also enables the submersible to remain submerged in the
object recognition and path adjustment technologies essential
deep sea for extended durations. Furthermore, information
componentsoftheiroperation.
from the sensors onboard the submersible and operational
Today,AUVtechnologyisactivelyusedinresourcesurveys
commands are transmitted through these connected cables.
and military fields, mainly in the so-called “cruise type”
However, underwater conditions pose challenges such as
suitableforlong-distanceobservationsandarealsosuccessful
limitedGPSfunctionality,restrictedvisibility,andsignificant
in academic research such as observation of waters around
fluctuationsdependingontheaquaticenvironment.Therefore,
glaciersorhydrothermalzones.*InKorea,variousAUVsare
specialized sensors tailored for underwater use and specific
beingdeveloped,includingtheAUV“IntegratedSubmersible
dataprocessingtechniquesareemployed.
for Intelligent Mission Implementation” (ISIMI) developed
OneoftheprominentfeaturesofROVsistheiruseofvarious
by the Korea Institute of Marine Science and Technology,
equipmentthatreliesonsoundwaves,withsonarbeingakey
and the “Hanwha AUV” and “Mine Killer-Boto” developed
component. Sonar is a device that emits and receives sound
by the Korean company Hanwha. Among them, ISIMI has
waves. When sonar emits a sound wave, and it encounters
the advantage of being able to operate autonomously by self-
an object in its path, the sound wave bounces back. In such
judgment, control, and self-position recognition underwater,
cases, the sonar calculates the distance between the object in
and to perform tasks repeatedly by traveling back and forth
front and the submersible by measuring the time it takes for
between underwater bases. Principal Researcher Lee Pan-
the sound wave to be generated and returned. For example,
mook of the Korea Research Institute of Ships and Ocean
if it takes one second for a sonar to emit a sound wave and
27
OCTOBER 2023
29페이지 본문끝
메뉴
현재 포커스의 아래내용들은 동일한 컨텐츠를 가지고 페이지넘김 효과및 시각적 효과를 제공하는 페이지이므로 스크린리더 사용자는 여기까지만 낭독하시고 위의 페이지이동 링크를 사용하여 다음페이지로 이동하시기 바랍니다.