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Summary:
Ultrasonic transducer, Ultrasonic sensors, Ultrasonic sensor working,
ultrasonic distance measurement, ppt, pdf
Ultrasonic
transducer is the transducer which converts ultrasonic sound into electrical
signals. The basic of this technology can be traced back to the bats mammal.
They used these techniques to see in the dark because they don’t have the eyes
to see the world. Types of transducers include many types ranging from acoustic
to heat sensors. Among these types of transducers, the ultrasonic transducer
has developed its own important place.
How
ultrasonic transducers work?
The
working of ultrasonic transducer can be understood easily by thinking it as a
radar. Radar mainly transmits signal in the skies to watch for planes in the
air. The waves transmitted by the radar antenna are transmitted in the air.
When these transmitted waves strikes on a plane or aircraft, some wave get
reflected back to the radar antenna. These reflected waves are sensed by the
radar receiver antenna system.
In
the similar way the ultrasonic transducer also transmits wave from its
transmitter. The waves transmitted by the ultrasonic transducer are above
audible range of 20 khz. Commercially available ultrasonic transducers transmit
waves of 20khz to 40 khz. Higher frequency ranges are also available in the
market.
Ultrasonic
transducer transmitter and receiver principle:
In
the ultrasonic transmitter circuit the oscillator produces the waves of above
20 khz which are to be transmitted. These amplified waves are then transmitted
by the ultrasonic transducer. After transmitting the ultrasonic receiver receives
the reflected back ultrasonic waves. It is like a light wave is transmitted and
then it reflects back by the mirror. Similarly the ultrasonic waves transmitted
by transducer is transmitted and received back.
Ultrasonic transducer use application:
Distance
measurement by ultrasonic transducer is a very important application of the
transducer. As we have discussed above in the principle of working that the
waves are transmitted and than reflected back. For this transmission and
reflection back wave needs sopme time to travel this two way distance. When we
know the speed of the ultrasonic wave and the time taken by it to travel, we
can easily find out the distance. This is the process of distance measurement
by ultrasonic transducers for distance measurement devices.
For
the designing of ultrasonic transducers the help of ultrasonic datasheets can
be taken. The specification like the transmitted power and the receiving power
of ultrasonic transducer can be read from the manufacturer data sheet. The
frequency range of transmission for the ultrasonic transducer can also be read
from the datasheet. By reading these important specifications of ultrasonic transducer,
the designer of the circuit can design an appropriate design essential for the
circuit.
Ultrasonic
transducer ppt:
The preparation
of ultrasonic transducer ppt can be done by covering these important points:
Ultrasonic
transducer working principle
Ultrasonic
transducer transmitter and receiver circuit
Uses
of ultrasonic transducer
By
writing the slides on the above main topics save it as pdf and that will be
ready for presentation on ultrasonic transducers.
Ultrasonic Transducer Use:
Ultrasonic
transducer has found uses in medical treatment field also. Ultrasound machine
which is common in hospitals can be used for seeing inside the stomach portion
of the body. Ultrasound produces the images that can be used to see inside
human body. BY the ultrasonic waves transmitted and received by the transducer,
machine develops the images. These images can be used to image the liver,
kidney, intestine and heart etc of the body. By seeing the shape of the body
parts in the image doctor can predict the treatment for the ill person.
Apart
from medical uses ultrasonic transducers are used in modern gadgets for
security purposes. Ultrasonic transducers are also used in industry for
counting purpose. Ultrasonic transmitter and receiver are placed on both side
of the path. When a person or a product passes on the path the ultrasonic beam between
transmitter and receiver is cut. This disruption in the ultrasonic waves is
sensed by the electronic circuitry. This disruption or cutting of ultrasound
signals is counted by the counter.
Ultrasonic
transducer price
The
price of ultrasonic transducer is not very costly. It can easily be bought in
the range of few 1 to 2 dollars to high price range. The sophisticated ultrasonic
transducer cost more than the cheap available transducer for student’s projects.
According to the need and usage one can find easily available ultrasonic
transducer in the market. The ultrasonic transducer can be bought on online
websites also. By researching your need and specification, accuracy, one needs
to start searching for the type of ultrasonic transducer needed by them.
