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Measurement of Granular Surface Pattern in a Hopper by Ultrasonic Wave Sensor

Memoirs of the Faculty of Engineering, Yamaguchi University Volume 36 Issue 1 Page 37-43
published_at 1985
KJ00000156573.pdf
[fulltext] 388 KB
Title
超音波による貯槽内粉面形状の計測
Measurement of Granular Surface Pattern in a Hopper by Ultrasonic Wave Sensor
Creators Morimoto Eiji
Creators Hayano Nobuo
Source Identifiers
Fundamental characteristics for pattern recognition of granular surface in a hopper by ultrasonic wave sensor was investigated experimentally for the purpose of developing the detector as a control unit. Results showed rize time of output voltage from the reciever affected directly the accuracy of measurement. Directivities of the sensing units have been improved by installing the conical shaped horns in front of both the transmitter and reciever. Experiments on the effect of the pulse wave length on the strength of its reflection from object indicated that duration time more than 300μsec was sufficient to reach the threshold level. Measurement error which was due to the irregular reflection from the particle surface and inner wall surface was reduced by arranging the four recievers around the emitter.
Subjects
機械工学 ( Other)
Languages jpn
Resource Type departmental bulletin paper
Publishers 山口大学工学部
Date Issued 1985
File Version Version of Record
Access Rights open access
Relations
[ISSN]0372-7661
[NCID]AN00244228
Schools 工学部