Ultrasonic scanning, imaging and recognition of bottles
conference paper
A compact machine has been developed to take in returnable bottles. Using ultrasonics, it recognizes up to 150 different bottles. A teaching facility allows store personnel to add new types of bottles to the reference set. The ultrasonic system operates in air and employs a strongly focusing parabolic acoustical mirror in combination with a linear array of three transducers to image the bottle. To reduce artifacts, phase-insensitive detection is incorporated. Automatic calibration helps to achieve the relatively high accuracy required. Dedicated recognition software attempts to match the present bottle to one in the reference set. The ultrasonic system and recognition software are discussed.
Topics
TNO Identifier
230996
ISSN
00905607
Publisher
IEEE
Source title
IEEE 1989 Ultrasonics Symposium, 3-6 October 1989, Montreal, Quebec, Canada
Collation
4 p.
Place of publication
Piscataway, NJ, USA
Pages
635-638
Files
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