Title :
Development of a noninvasive powder level switch by acoustic method
Author :
Ooshima, Akihiro ; Kobayashi, Kazuyuki ; Watanabe, Kajiro
Author_Institution :
Dept. of Syst. & Control Eng., Hosei Univ., Tokyo, Japan
Abstract :
Various physical phenomena can be used to measure the powder level in a storage tank. This paper describes an accurate, novel and method employing acoustics to measure the amount of powder in a tank. The proposed method employs a probing pipe in a small loudspeaker. We catch a change of acoustic impedance of opening of a pipe. Change in acoustic impedance produces an output signal.
Keywords :
acoustic applications; acoustic impedance; acoustic resonance; level measurement; level meters; tanks (containers); acoustic impedance; acoustic resonance; acoustics method; loudspeaker; noninvasive powder level switch; pipe; powder level measurement; storage tank;
Conference_Titel :
SICE 2004 Annual Conference
Conference_Location :
Sapporo
Print_ISBN :
4-907764-22-7
