Applied Sciences,
Journal Year:
2024,
Volume and Issue:
14(23), P. 10805 - 10805
Published: Nov. 22, 2024
The
long-term
CO2
emissions
of
transformer
substations
require
constant
monitoring.
In
this
study,
we
propose
a
piezoelectric
vibration
energy
harvester
designed
for
self-powered
monitoring
substations.
proposed
comprises
multiple
slender
cantilevers
arranged
in
parallel,
which
results
higher
operational
frequency
and
significantly
enhanced
power
output
capability.
Experimental
investigations
were
conducted
to
assess
the
harvesting
performance.
show
that
can
effectively
capture
energy,
yielding
an
RMS
2.99
mW,
corresponding
substation.
Additionally,
wireless
sensor
node
was
developed,
demonstrating
mechanism
capacitor
takes
approximately
1220
s
charge
initial
data
measurement
transmission.
findings
confirm
is
capable
providing
sufficient
operate
Small,
Journal Year:
2024,
Volume and Issue:
unknown
Published: May 29, 2024
Triboelectric
nanogenerator
(TENG)
represents
an
effective
approach
for
the
conversion
of
mechanical
energy
into
electrical
and
has
been
explored
to
combine
multiple
technologies
in
past
years.
Self-powered
sensors
are
not
only
free
from
constraints
environment
but
also
capable
efficiently
harvesting
ambient
sustain
continuous
operation.
In
this
review,
remarkable
development
TENG-based
human
body
sensing
achieved
recent
years
is
presented,
with
a
specific
focus
on
health
solutions,
such
as
motion
physiological
signal
detection.
The
movements
originating
different
parts
body,
touch,
sound,
eyes,
systematically
classified,
thorough
review
sensor
structures
materials
conducted.
Physiological
categorized
non-implantable
implantable
biomedical
discussion.
Suggestions
future
applications
indicated,
highlighting
associated
challenges.
Small,
Journal Year:
2024,
Volume and Issue:
20(32)
Published: March 21, 2024
Abstract
Vibration
sensors
for
continuous
and
reliable
condition
monitoring
of
mechanical
equipment,
especially
detection
points
curved
surfaces,
remain
a
great
challenge
are
highly
desired.
Herein,
flexible
adaptive
triboelectric
vibration
sensor
high‐fidelity
conditions
is
proposed.
The
entirely
composed
materials.
It
consists
conductive
sponge‐silicone
layer
fluorinated
ethylene
propylene
film.
can
detect
acceleration
5
to
50
m
s
−2
frequency
10
100
Hz.
has
strong
robustness
stability,
the
output
performance
barely
changes
after
durability
test
168
000
working
cycles.
Additionally,
work
even
when
point
equipment
curved,
linear
fit
voltage
very
close
that
flat.
Finally,
it
be
applied
blower
vehicle
engine,
transmit
signal
mobile
phone
application
through
Wi‐Fi
module
real‐time
monitoring.
expected
provide
practical
paradigm
smart,
green,
sustainable
wireless
system
in
era
Internet
Things.
Micromachines,
Journal Year:
2024,
Volume and Issue:
15(5), P. 581 - 581
Published: April 27, 2024
We
introduce
a
micro-electromechanical
system
(MEMS)
energy
harvester,
designed
for
capturing
flow
energy.
Moving
beyond
traditional
vibration-based
harvesting,
our
approach
incorporates
cylindrical
oscillator
mounted
on
an
MEMS
chip,
effectively
harnessing
wind
through
flow-induced
vibration
(FIV).
A
highlight
of
research
is
the
development
comprehensive
fabrication
process,
utilizing
5.00
µm
thick
cantilever
beam
and
piezoelectric
film,
optimized
advanced
micromachining
techniques.
This
process
ensures
harvester’s
alignment
with
theoretical
predictions
enhances
its
operational
efficiency.
Our
tunnel
experiments
confirmed
capability
to
generate
notable
electrical
output,
peak
voltage
2.56
mV
at
8.00
m/s
speed.
Furthermore,
we
observed
strong
correlation
between
experimentally
measured
frequencies
lift
force
frequency
by
CFD
analysis,
dominant
identified
in
range
830
Hz
867
Hz,
demonstrating
potential
application
actual
environments.
By
feasibility
efficient
conversion
from
ambient
wind,
contributes
sustainable
solutions
low-power
wireless
electron
devices.
Journal of Micromechanics and Microengineering,
Journal Year:
2024,
Volume and Issue:
34(9), P. 093001 - 093001
Published: July 25, 2024
Abstract
The
burgeoning
internet
of
things
and
artificial
intelligence
technologies
have
prospered
a
variety
emerging
applications.
Human–machine
interfaces
(HMIs),
for
instance,
enables
users
with
intuitive,
efficient,
friendly
way
to
interact
machines,
capable
instant
information
acquisition,
processing,
communication,
feedback,
etc.
These
features
require
ultra-compact
high-performance
transducers,
therefore
self-powered
sensors
become
the
key
underlying
technology
HMI
This
review
focuses
on
piezoelectric,
triboelectric,
hybrid
particular
attention
their
microstructures
fabrication
methods,
showing
that
both
traditional
microfabrication
methods
like
three-dimensional
(3D)
printing,
electrospinning,
braiding
contributed
planar,
array,
porous,
fabric,
composite
type
sensors.
Moreover,
integration
method
piezoelectric
triboelectric
sensor
arrays
is
investigated.
crosstalk
issue
highlighted,
i.e.
signal
interference
between
adjacent
sensing
units,
current
solutions
such
as
array
design
optimization,
processing
improvement,
material
innovation
reduce
sensitivity
been
reviewed
through
specific
examples.
Three
categories
applications
outlined,
including
intelligent
interaction,
robotics,
human
monitoring,
detailed
explanations
how
support
these
Through
discussion
challenges
prospects,
it
proposed
further
coordinating
micro
devices
HMIs
will
potentially
boost
application
even
higher
level
diversification,
convenience,
interconnectivity.
