Piezoelectric transducer. What Piezoelectric mean ???  Piezoelectric material is one kind of transducers. we apply force or pressure on this material.

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Presentation transcript:

Piezoelectric transducer

What Piezoelectric mean ???  Piezoelectric material is one kind of transducers. we apply force or pressure on this material it converts it into electric voltage and this voltage is function of the force or pressure applied to it.  The material which behaves in such a way is also known as piezoelectric sensor.  The electric voltage produced by piezoelectric transducer can be easily measured by voltage measuring instruments, which can be used to measure stresses or forces. The physical quantity like mechanical stress or force cannot be measured directly. Therefore, piezoelectric transducer can be used.

What is the materials used to form piezoelectric transducer ???  You can use : Barium Titanate. Lead zirconate titanate (PZT). Rochelle salt.

What is the applications that I can use piezoelectric transducer in ???  1. In microphones, the sound pressure is converted into electric signal and this signal is ultimately amplified to produce louder sound. 2. Automobile seat belts lock in response to a rapid deceleration is also done by piezoelectric material. 3. It is also used in medical diagnostics. 4. It is used in electric lighter used in kitchens. Pressure made on piezoelectric sensor creates an electric signal which ultimately causes flash to fire up.

 5. They are used for studying high speed shock waves and blast waves. 6. Used in fertility treatment. 7. Used in Inkjet printers 8. It is also used in restaurants or airports where when a person steps near the door the door opens automatically In this the concept used is when person is near the door a pressure is exerted persons weight on the sensors due to which the electric effect is produced and the door opens automatically.

What is the advantages of Piezoelectric Transducer ???  1. No need of external force ( self generating ). 2. Easy to handle and use as it has small dimensions. 3. High frequency response it means the parameters change very rapidly.

What is the disadvantages of Piezoelectric Transducer ???  1. It is not suitable for measurement in static condition. 2. It is affected by temperatures. 3. Output is low so some external circuit is attached to it. 4. It is very difficult to give desired shape to this material and also desired strength.

Finally  I want to use it to charge my mobile battery while walking by using this circuit

Thank you A-ELDOKMERY