11-01-2013, 04:45 PM
BIOMATERIALS BASED TRANSDUCERS
BIOMATERIALS BASED TRANSDUCERS.pptx (Size: 757.51 KB / Downloads: 40)
Definition
The devices used to convert biological parameters to electrical signals are known as Bio-transducers , and the process of conversion known as transduction.
Piezoelectric Transducers
Certain materials are capable of generating an electrical potential when they are subjected to mechanical deformations.
Example: quartz, rochelle salt, polarized barium titanate,turmaline etc.
Defibrillator Electrodes /Transducers
A defibrillator is a life-saving machine that gives the heart an electric shock in some cases of cardiac arrest. This is called defibrillation and can save lives.
Transducer in Pacemaker
Electrical input line connected to the signal generator, and an electrical output line connected to the pacing circuitry, so a forcing motion on the transducer acknowledges electrical signal to the pacing circuitry, and operation of the signal generator causes the transducer to vibrate.