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An
Acoustic
Transformer
Powered
Super-High
Isolation
Amplifier
-
National
Semiconductor
Application
Note
AN-285:
An
Acoustic
Transformer
Powered
Super-High
Isolation
Amplifier
-
National
Semiconductor
Application
Note
AN597:
Implementing
Ultrasonic
Ranging
-
Microchip
Application
Note
Published
26-Aug-97
Circuit
for a
Critter
Ridder
-
Ultrasonic
Sound
Generator
Implementing
Ultrasonic
Ranging
-
Microchip
Application
Note
Published
26-Aug-97
IR
Detector/Emitter
Parking
Sonar
- This
was one
of my
first
designs:
it is an
ultrasonic
parking
sonar.
Based on
an
ultrasonic
amplifier
from an
article
seen on
a 1982
magazine,
it was
once
installed
on the
rear
bumper
of my
Volvo
Station
Wagon.
It
served
very
well for
many
years.
Connecting
it to
the
reverse
gear
lights,
it
switches
on
automatically
and
shows
you the
distance
to the
nearest
obstacle
(according
to his
beam) on
a led
scale.
When the
last led
lights,
a buzzer
is also
activated
telling
you to
stop
immediately
Popular
Electronics
Ultrasound
Detector
Ultrasonic
Alarm
- This
alarm
device
transmits
the
ultrasonic
and it
confirms
a
reflected
wave
from the
obstacle.
If there
is
object
within
the set
distance,
it
doesn't
give the
alarm.
When
there is
no
object
within
the set
distance,
it gives
the
alarm.
The
distance
which
can be
set is
from
about 40
cm to
5-6 m.
For
example,
when
making a
setting
distance
5 m, it
gives
the
alarm
when the
reflected
wave
from 40
cm to 5
m passes
away.
Ultrasonic
dog
whistle
Ultrasonic
ParK
Controller
- Are
you
afraid
that
your
brand
new
Hummer
is going
to get
scratched
while
parking
it in a
tight
space?
Do you
have
trouble
backing
your
large
Mercedez
S-class
into
your
small
garage?
Fear no
more!
Our
ultrasonic
ParKontroller
can
sense
how far
you are
away
from the
wall.
Ultrasonic
Parking
Assistant
- The
basic
theory
behind
the
Parking
Assistant
is the
Sound
Navigation
and
Ranging
(SONAR)
technique
that is
used for
finding
the
distance
and
direction
of a
remote
object
underwater
by
transmitting
sound
waves
and
detecting
reflections
from it.
First, a
series
of short
ultrasonic
pulses
are
transmitted
using a
transducer
that
changes
voltage
into
sound
waves.
The
transmitted
pulse is
reflected
off an
object,
and the
reflected
wave is
then
received
by
another
transducer
that
converts
sound
waves
into
voltage.
The
transmitted
signal
is also
known as
the
‘ping’
and the
received
signal
is known
as the
‘pong’.
By
counting
the
elapsed
time
between
the ping
and the
pong,
the
distance
between
the
device
and an
object
can be
easily
calculated
by
multiplying
the
elapsed
time
with the
speed of
sound.
Ultrasonic
Pest
Repeller
Ultrasonic
radar
- This
is a
very
interesting
project
with
many
practical
applications
in
security
and
alarm
systems
for
homes,
shops
and
cars. It
consists
of a set
of
ultrasonic
receiver
and
transmitter
which
operate
at the
same
frequency.
When
something
moves in
the area
covered
by the
circuit
the
circuit’s.
Ultrasonic
Range &
Imager
- This
is the
electronic
schematic
of the
homebuilt
SONAR.
Only one
piezoelectric
transducer
is used
for both
transmit
&
receive.
This
transducer
is
switched
from TX
to RX
via the
four
4016
switches.
A high
gain
amplifier
stage &
rectifier
translates
the
received
echoes
into
voltage
pulses.
The
timing
is
controlled
by the
PIC12C508
8-pin
microcontroller..
Ultrasonic
Range
Finder
Circuit
Ultrasonic
Range
Finder
uses Few
Components
- EDN-Design
Ideas
(added
1/06) An
ultrasonic,
or
sonar,
range
finder
is a
common
sensor
in
robotic
systems
and
industrial
environments.
Even
home and
automotive
uses are
possible.
A novel
sensor
design
consists
of a WC,
a few
peripheral
components,
and a
pair of
ultrasonic
transducers
(Figure
1).
Ultrasonic
Range
Meter
- This
circuit
is
measuring
the
range to
an
object
by using
ultrasonic
transmitter
and
ultrasonic
receiver.
The
distance
is
calculated
by PIC
microprocessor
and is
displayed
on the
three
digit
7-segment
LED
display.
Ultrasonic
Remote
Control
and
Alarm
Ultrasonic
Sound
Detector
- Its
Useful
to hear
Ultrasonic
Sounds.
Ultrasonic
Switch
(Andrew
Wilson)
- The
circuit
described
generates
(transmits)
ultrasonic
sound of
frequency
between
40 and
50 kHz.
As with
any
other
remote
control
system
this
cirucit
comprises
of a
mini
transmitter
and a
receiver
circuit.
Transmitter
generates
ultrasonic
sound
and the
receiver
senses
ultrasonic
sound
from the
transmitter
and
switches
on a
relay.
Ultrasonic
Transducer
Oscillator
Circuit
- ASCII
format
Ultrasound
Detector |
