Title:
センサ及び計測システム
Document Type and Number:
Japanese Patent JP6476789
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a sensor for measuring flow rate with a high durability and easy-to-maintain.SOLUTION: The sensor which is disposed in a space connected to a flow channel through which a fluid flows includes: a waveguide 12; a sound input part 13 that inputs a sound in the waveguide 12; a frequency analysis section 22 that calculates a space volume and a spectrum strength of a Helmholtz resonant frequency which is determined on the basis of the shape and dimensions of the waveguide 12 on the basis of the frequency spectrum of the sound input by the sound input part 13; and a calculation section 23 that calculates the flow rate of the fluid flowing through the flow channel based on the spectrum strength calculated by the frequency analysis section 22.SELECTED DRAWING: Figure 1
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Inventors:
Osamu Tsuboi
Michio Yugome
Yoshio Kikuchi
High Ryozo Su
Michio Yugome
Yoshio Kikuchi
High Ryozo Su
Application Number:
JP2014236906A
Publication Date:
March 06, 2019
Filing Date:
November 21, 2014
Export Citation:
Assignee:
富士通株式会社
International Classes:
G01F23/00; G01F1/00; G01P5/24
Domestic Patent References:
| JP2013130485A | ||||
| JP61191921A | ||||
| JP59116508A | ||||
| JP10153462A |
Other References:
斎藤秀徳, 外4名,“跳水から発生する音に関する基礎的研究”,水工学論文集,日本,社団法人 土木学会,2003年 2月,第47巻,pp. 775-780
Attorney, Agent or Firm:
Atsushi Aoki
Koichi Itsubo
Tsutomu Kono
Tetsuo Miyamoto
Koichi Itsubo
Tsutomu Kono
Tetsuo Miyamoto