A
Pulse generator based on an Arduino platform for ultrasonic
applications
Author : Pedro Acevedoa, Mónica Vázqueza,
Joel Durána, Rodolfo Petrearcea
Source : Physics
Procedia 70 ( 2015) 1096 – 1099
Summary of Reported
Research :
Pulsed methods
allow to determine the speed, by measuring the time requiring the pulse to
travel through the medium and back. The pulse generator is one of the critical
components in an ultrasonic system. Because it is the device that produces the
electrical pulses that are applied to the emitter transducer. The most
important parameters are frequency, amplitude and power of these electrical
pulses, which determine the energy delivered to the ultrasonic transducer. Ultrasonic
non-destructive testing applications are often based on pulsed electrical excitation
of the piezoelectric transducers (e.g.: PZTs) by means of a single-phase pulse
(shock excited) or by means of two-phase waves (burst excited); using to
produce these pulses, generators (pulsers) producing voltages in the order of hundreds
of volts, these pulsers usually include as circuit breaker SCRs or MOSFETs.
Strength of
reported Invention :
- 1. Consumes low
power
- 2. No need
cooling system to dissipate heat
- 3. High voltage
drivers are not required
Weakness of reported Invention :
- 1. A high
gain is still needed
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