Application of Ultrasonic Proper ties of Potatoes on the Design of a Grading Machine
Date Issued
1999-07-31
Date
1999-07-31
Author(s)
盧福明
DOI
882313B002093
Abstract
Potato samples were selected in this study.
The treatments for studying influencing factors
on ultrasonic measuring accuracy were water
level, distance between transducers and speed
of the conveyor belt. Relationships between the
characters of underwater transmitting ultrasonic
waves (attenuation and spectral moment) and
the timing of measurement were also
investigated. The results showed that the
underwater ultrasonic transmitting waves were
affected by timing of measurement.
Potatoes were penetrated by a steel bar
along the major axis to create different degrees
of hollowness. The spectral moment of
transmitting ultrasonic wave was found smaller
in hollow potato than in normal potato. It is
feasible to develop an underwater ultrasonic
detection machine for potato.
Subjects
Potato
Underwater
Ultrasonic
Coefficient of attenuation
Spectral moment
Publisher
臺北市：國立臺灣大學生物產業機電工程學系暨研究所
Type
report
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