NON-CONTACT ULTRASOUND
IDENTIFICATION OF WASTE PLASTICS
BY WAVELET SYMPTOMS' SPACES
GENERATING
R. ILARIONOV*, N. M. KOLEVA**, N. SHOPOV***, I. SIMEONOV*
*Department of Computer Systems and Technologies, Technical University of
Gabrovo, Bulgaria
**Department...
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NON-CONTACT ULTRASOUND
IDENTIFICATION OF WASTE PLASTICS
BY WAVELET SYMPTOMS' SPACES
GENERATING
R. ILARIONOV*, N. M. KOLEVA**, N. SHOPOV***, I. SIMEONOV*
*Department of Computer Systems and Technologies, Technical University of
Gabrovo, Bulgaria
**Department of Chemistry and Ecology, Technical University of Gabrovo,
Bulgaria
*** University of Food Technologies – Plovdiv, Bulgaria
SUMMARY: the goal of this work is to develop and test new technique for identification of
different type of post-consumer plastics. Non-contact ultrasound identification technique is
based on the reflection of acoustic waves with frequency in the ultrasound range. Two-sensors
measuring system without a direct contact between the measuring transducer and the identified
object (working media air) is used for experiments: the acoustic wave generated by the
transmitter falls in the measuring media, is reflected and comes back as echo to the receiver; then
the received ultrasound signal is analyzed and the informati
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