Photonics Research,
Год журнала:
2024,
Номер
12(9), С. 2018 - 2018
Опубликована: Июнь 21, 2024
Improving
the
functionality
of
an
optical
sensor
on
a
prefabricated
platform
relies
heavily
signal
conditioning
method
that
actively
modulates
signals.
In
this
work,
we
present
for
active
modulation
response
uses
fiber
modal
interferometers
integrated
in
parallel.
Over
broad
frequency
range
1
Hz
to
kHz,
interferometers’
technology
allows
adjustable
amplification,
attenuation,
and
filtering
dynamic
The
suggested
is
also
used
enhance
real-time
fluid
flowmeter.
order
keep
tabs
different
physical
fields,
approach
promotes
creation
self-conditioning
sensing
systems.
IEEE Sensors Journal,
Год журнала:
2024,
Номер
24(10), С. 16188 - 16195
Опубликована: Апрель 10, 2024
In
the
exoskeleton-assisted
rehabilitation
scenarios,
sensors
need
to
have
strong
resistance
environmental
interference
and
long-term
monitoring
stability.
Commonly
used
body
temperature
measurement
equipment
cannot
be
recorded
worn
for
long
periods.
Based
on
advantages
of
optical
fiber
that
are
resistant
electromagnetic
interference,
adaptability,
good
stability
after
being
fabricated
packaged
in
a
specific
structure.
This
article
proposes
human
sensing
probe
uses
capillary
copper
tubes
encapsulate
F-P
cavity
The
UV
glue
is
applied
at
end
cured
form
an
microcavity,
which
encapsulated
with
tube
thermal
conductivity
protection.
It
can
fixed
anywhere
surface
medical
tape.
Theoretical
derivation
numerical
simulation
carried
out
principle
cavity.
characteristics
tested
performed
wrist
armpit.
experimental
results
show
has
stability,
repeatability,
sensitivity
signal-to-noise
ratio.
average
standard
deviation
dip
wavelength
constant
16.7
pm.
sensor
about
287.3
pm/
°C.
structure
makes
response
speed
faster
than
electronic
sensors.
proposed
sign
information
feedback
rehabilitation,
conducive
realization
efficient
intelligent
strategies.
IEEE Sensors Journal,
Год журнала:
2024,
Номер
24(11), С. 17812 - 17816
Опубликована: Апрель 15, 2024
We
present
a
chip-scale
integrated
demodulation
approach
based
on
microring
resonator
(MRR)
for
fiber
optic
interferometric
sensors.
The
system
consists
of
temperature
sensor
Sagnac
interferometer
(SI)
and
an
on-chip
filter.
spectral
superposition
the
two
devices
generates
Vernier
effect,
resulting
in
approximately
8-fold
increase
sensitivity
sensor.
In
addition
to
theoretical
simulations
amplification
principle
proposed
method,
details
its
laboratory
evaluation
are
also
provided.
Furthermore,
integrating
suitable
filter
into
enables
intensity
SI
This
micro-demodulation
can
be
extended
other
types
Measurement Sensors,
Год журнала:
2024,
Номер
34, С. 101244 - 101244
Опубликована: Июнь 5, 2024
The
rapid
growth
of
available
wearable
technologies,
particularly
in
the
healthcare
sector,
has
ushered
a
new
era
digital
health.
This
progress
introduced
possibilities
for
monitoring
vital
signs,
including
breathing
rate
(BR).
BR
is
crucial
health
parameter
used
to
assess
an
individual's
overall
well-being;
specifically,
it
can
be
considered
precise
indicator
pathological
conditions
and
stressors.
aim
this
study
conduct
metrological
characterization
one
most
widely
sensors
measurement
(i.e.,
Zephyr
BioHarness
3.0),
comparing
gold
standard
monitor
spirometer),
determined
test
conditions,
both
natural
defined
patterns.
Additionally,
Monte
Carlo
method
was
applied
evaluate
propagation
uncertainty
identification
peaks
respiratory
signal,
calculate
BR.
Results
reveal
that
3.0
sensor
provides
highly
accurate
measurements,
with
precision
±1
bpm.
Bland-Altman
analysis
indicates
95%
confidence
interval
[-2;
3]
bpm,
demonstrating
close
agreement
reference
instrument.
Pearson's
correlation
coefficient
0.95
further
validates
linear
between
reference/test
measurements.
simulation
based
on
(MCM)
expanded
±2
bpm
(coverage
factor
k=2)
estimation
due
(compatible
accuracy
provided
by
manufacturer).
These
results
highlight
reliability
while
emphasizing
significance
accounting
different
disturbing
factors,
e.g.,
peak
detection
during
data
analysis,
also
provide
rigorous
level
results,
hence
being
able
properly
interpret
them
biomedical
applications.
ACS Applied Materials & Interfaces,
Год журнала:
2024,
Номер
16(25), С. 32662 - 32678
Опубликована: Июнь 12, 2024
The
pervasive
global
issue
of
population
aging
has
led
to
a
growing
demand
for
health
monitoring,
while
the
advent
electronic
wearable
devices
greatly
alleviated
strain
on
industry.
However,
these
come
with
inherent
limitations,
such
as
electromagnetic
radiation,
complex
structures,
and
high
prices.
Herein,
Solaris
silicone
rubber-integrated
PMMA
polymer
optical
fiber
(S-POF)
intelligent
insole
sensing
system
been
developed
remote,
portable,
cost-effective,
real-time
gait
monitoring.
is
capable
sensitively
converting
pressure
key
points
sole
into
changes
in
light
intensity
correlation
coefficients
0.995,
0.952,
0.910.
S-POF
structure
demonstrates
excellent
durability
4.8%
variation
output
after
10,000
cycles
provides
stable
feedback
bending
angles.
It
also
exhibits
water
resistance
temperature
within
certain
range.
Its
multichannel
multiplexing
framework
allows
smartphone
monitor
multiple
channels
simultaneously,
meeting
requirements
convenience
daily
care.
Also,
can
efficiently
accurately
provide
parameters
pressure,
step
cadence,
distribution,
enabling
analysis
phases
patterns
errors
only
4.16%
6.25%
stance
phase
(STP)
swing
(SWP),
respectively.
Likewise,
comparing
various
AI
models,
an
channel-based
pattern
recognition
technique
proposed
accuracy
up
96.87%.
Such
experimental
results
demonstrate
that
promising
further
promote
development
rehabilitation
healthcare.
Photonics Research,
Год журнала:
2024,
Номер
12(9), С. 2018 - 2018
Опубликована: Июнь 21, 2024
Improving
the
functionality
of
an
optical
sensor
on
a
prefabricated
platform
relies
heavily
signal
conditioning
method
that
actively
modulates
signals.
In
this
work,
we
present
for
active
modulation
response
uses
fiber
modal
interferometers
integrated
in
parallel.
Over
broad
frequency
range
1
Hz
to
kHz,
interferometers’
technology
allows
adjustable
amplification,
attenuation,
and
filtering
dynamic
The
suggested
is
also
used
enhance
real-time
fluid
flowmeter.
order
keep
tabs
different
physical
fields,
approach
promotes
creation
self-conditioning
sensing
systems.
