Title:
体積計測装置および体積計測方法
Document Type and Number:
Japanese Patent JP7390664
Kind Code:
B2
Abstract:
A volume measuring device 1 is provided with: a first container 20 demarcating a first space S1; a second container 30 demarcating a second space S2; a neck portion 40 demarcating a flow passage FP providing fluid communication between the spaces S1, S2; a speaker 25 which is disposed in the first space S1 and which emits sound in a prescribed frequency range; a hydrophone 35 disposed in the second space S2; a storage unit 53c storing a reference resonant frequency f0, which is the frequency of a resonant sound generated in the second space S2 by the sound emitted by the speaker 25 when fish F are not present in the second space S2; a resonance analyzing unit 53b which analyzes sound collected by the hydrophone 35 to acquire a target resonant frequency f, which is the frequency of the resonant sound when fish F are present in the second space S2; and a volume calculating unit 53d which calculates a volume Vo of the fish F on the basis of the frequencies f0, f.
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Inventors:
Tadashi Kondo
Stephen Njehia Njane
Yuichi Ogawa
Tetsuhito Suzuki
Kohei Ogata
Takahisa Nishizu
Stephen Njehia Njane
Yuichi Ogawa
Tetsuhito Suzuki
Kohei Ogata
Takahisa Nishizu
Application Number:
JP2020541263A
Publication Date:
December 04, 2023
Filing Date:
September 04, 2019
Export Citation:
Assignee:
Kyoto University
Tokai National University Organization
Tokai National University Organization
International Classes:
G01F17/00; A01K61/95
Domestic Patent References:
| JP1136027A | ||||
| JP783731A | ||||
| JP1184417A |
Foreign References:
| WO2005090932A1 | ||||
| WO2013094739A1 | ||||
| US4991433 |
Attorney, Agent or Firm:
Takuji Yamada
Yoshiyuki Maebori
Yoshiyuki Maebori