Sensors,
Journal Year:
2023,
Volume and Issue:
23(13), P. 6205 - 6205
Published: July 6, 2023
Water
Loss
(WL)
is
a
global
issue.
In
Italy,
for
instance,
WL
reached
36.2%
of
the
total
fresh
water
conveyed
in
2020.
The
maintenance
supply
system
strategic
task
that
requires
huge
amount
investment
every
year.
this
work,
we
focused
on
use
Distributed
Fiber
Optic
Sensors
(DFOS)
based
Stimulated
Brillouin
Scattering
(SBS)
technology
monitoring
pipeline
networks.
We
worked
High-Density
Polyethylene
(HDPE)
pipes,
today
most
widely
used
creating
pipelines.
By
winding
and
fixing
optic
fiber
cable
pipe’s
external
surface,
verified
ability
to
detect
strain
related
pressure
anomalies
along
pipeline,
e.g.,
those
caused
by
leakage.
performed
two
experimental
phases.
first
one,
assessed
sensibility
sensor
layout
an
HDPE
solicited
with
static
pressure.
investigated
viscoelastic
rheology
material
calibrating
validating
parameters
Burger
model,
which
Maxwell
Kelvin-Voigt
models
are
connected
series.
second
phase,
instead,
detection
anomaly
produced
leakage
circuit
set
up
running
moved
pump.
theoretical
studies
returned
overall
positive
feedback
DFOS
Future
developments
will
be
more
detailed
solution
industrial
production
“natively
smart”
pipes
cables
integrated
into
surface
during
extrusion
process.
Process Safety and Environmental Protection,
Journal Year:
2024,
Volume and Issue:
183, P. 99 - 110
Published: Jan. 4, 2024
The
effective
detection
and
prevention
of
CO2
leakage
in
active
injection
wells
are
paramount
for
safe
carbon
capture
storage
(CCS)
initiatives.
This
study
assesses
five
fundamental
machine
learning
algorithms,
namely,
Support
Vector
Regression
(SVR),
K-Nearest
Neighbor
(KNNR),
Decision
Tree
(DTR),
Random
Forest
(RFR),
Artificial
Neural
Network
(ANN),
use
developing
a
robust
data-driven
model
to
predict
potential
incidents
wells.
Leveraging
wellhead
bottom-hole
pressure
temperature
data,
the
models
aim
simultaneously
location
size
leaks.
A
representative
dataset
simulating
various
leak
scenarios
saline
aquifer
reservoir
was
utilized.
findings
reveal
crucial
insights
into
relationships
between
variables
considered
characteristics.
With
its
positive
linear
correlation
with
depth
leak,
could
be
pivotal
indicator
location,
while
negative
relationship
well
demonstrated
strongest
association
size.
Among
predictive
examined,
highest
prediction
accuracy
achieved
by
KNNR
both
localization
sizing.
displayed
exceptional
sensitivity
size,
able
identify
magnitudes
representing
as
little
0.0158%
total
main
flow
relatively
high
levels
accuracy.
Nonetheless,
underscored
that
accurate
sizing
posed
greater
challenge
compared
localization.
Overall,
obtained
can
provide
valuable
development
efficient
well-bore
systems.
Sensors,
Journal Year:
2023,
Volume and Issue:
23(19), P. 8079 - 8079
Published: Sept. 25, 2023
A
hybrid
deep
learning
approach
was
designed
that
combines
with
enhanced
short-time
Fourier
transform
(STFT)
spectrograms
and
continuous
wavelet
(CWT)
scalograms
for
pipeline
leak
detection.
Such
detection
plays
a
crucial
role
in
ensuring
the
safety
integrity
of
fluid
transportation
systems.
The
proposed
model
leverages
power
STFT
CWT
to
enhance
capabilities.
pipeline's
acoustic
emission
signals
during
normal
operating
conditions
undergo
transformation
using
CWT,
creating
representing
energy
variations
across
time-frequency
scales.
To
improve
signal
quality
eliminate
noise,
Sobel
denoising
filters
are
applied
scalograms.
These
filtered
then
fed
into
convolutional
neural
networks,
extracting
informative
features
harness
distinct
characteristics
captured
by
both
CWT.
For
computational
efficiency
discriminatory
power,
principal
component
analysis
is
employed
reduce
feature
space
dimensionality.
Subsequently,
leaks
accurately
detected
classified
categorizing
reduced
dimensional
t-distributed
stochastic
neighbor
embedding
artificial
networks.
achieves
high
accuracy
reliability
detection,
demonstrating
its
effectiveness
capturing
spectral
temporal
details.
This
research
significantly
contributes
monitoring
maintenance
offers
promising
solution
real-time
diverse
industrial
applications.
Sensors,
Journal Year:
2024,
Volume and Issue:
24(12), P. 4009 - 4009
Published: June 20, 2024
Detecting
pipeline
leaks
is
an
essential
factor
in
maintaining
the
integrity
of
fluid
transport
systems.
This
paper
introduces
advanced
deep
learning
framework
that
uses
continuous
wavelet
transform
(CWT)
images
for
precise
detection
such
leaks.
Transforming
acoustic
signals
from
pipelines
under
various
conditions
into
CWT
scalograms,
followed
by
signal
processing
non-local
means
and
adaptive
histogram
equalization,
results
new
enhanced
leak-induced
scalograms
(ELIS)
capture
detailed
energy
fluctuations
across
time-frequency
scales.
The
fundamental
approach
takes
advantage
a
belief
network
(DBN)
fine-tuned
with
genetic
algorithm
(GA)
unified
least
squares
support
vector
machine
(LSSVM)
to
improve
feature
extraction
classification
accuracy.
DBN-GA
precisely
extracts
informative
features,
while
LSSVM
classifier
distinguishes
between
leaky
non-leak
conditions.
By
concentrating
solely
on
capabilities
ELIS
processed
through
optimized
DBN-GA-LSSVM
model,
this
research
achieves
high
accuracy
reliability,
making
significant
contribution
monitoring
maintenance.
innovative
capturing
complex
patterns
can
be
applied
real-time
leak
critical
infrastructure
safety
several
industrial
applications.
Smart Cities,
Journal Year:
2024,
Volume and Issue:
7(4), P. 2318 - 2338
Published: Aug. 20, 2024
This
study
explores
a
novel
approach
utilizing
acoustic
emission
(AE)
signaling
technology
for
pipeline
leakage
detection
and
analysis.
Pipeline
leaks
are
significant
concern
in
the
liquids
gases
industries,
prompting
development
of
innovative
methods.
Unlike
conventional
methods,
which
often
require
contact
visual
inspection
with
surface,
proposed
time-series-based
deep
learning
offers
real-time
higher
safety
efficiency.
In
this
study,
we
propose
an
automatic
system
efficient
transportation
liquid
(water)
gas
across
city,
considering
smart
city
approach.
We
AE-based
framework
combined
time-series
algorithms
to
detect
through
features.
The
AE
signal
module
is
designed
capture
subtle
changes
state
caused
by
leaks.
Sequential
models,
including
long
short-term
memory
(LSTM),
bi-directional
LSTM
(Bi-LSTM),
gated
recurrent
units
(GRUs),
used
classify
response
into
normal
from
minor
seepage,
moderate
leakage,
major
ruptures
pipeline.
Three
sensors
installed
at
different
configurations
on
pipeline,
data
acquired
1
MHz
sample/sec,
decimated
4K
sample/second
efficiently
constraints
remote
system.
performance
these
models
evaluated
using
metrics,
namely
accuracy,
precision,
recall,
F1
score,
convergence,
demonstrating
classification
accuracies
up
99.78%.
An
accuracy
comparison
shows
that
BiLSTM
performed
better
mostly
all
hyperparameter
settings.
research
contributes
advancement
technology,
offering
improved
reliability
identifying
addressing
integrity
issues.
Sensors,
Journal Year:
2023,
Volume and Issue:
23(21), P. 8935 - 8935
Published: Nov. 2, 2023
Water
leakage
from
aging
water
and
wastewater
pipes
is
a
persistent
problem,
necessitating
the
improvement
of
existing
leak
detection
response
methods.
In
this
study,
we
conducted
an
analysis
essential
features
based
on
data
collected
sensors
installed
at
meter
boxes
outlets
pipelines.
The
pipeline
through
vibration
sensor
were
preprocessed
by
converting
it
into
tabular
form
frequency
band
applied
to
various
machine
learning
models.
characteristics
each
model
analyzed,
XGBoost
was
selected
as
most
suitable
with
high
accuracy
99.79%.
These
systems
can
effectively
reduce
time,
minimize
waste,
economic
losses.
Additionally,
technology
be
fields
that
utilize
pipes,
making
widely
applicable.