Title:
NOISE CONTROL DEVICE, SHIP, NOISE CONTROL METHOD AND ITS PROGRAM
Document Type and Number:
Japanese Patent JP2018171939
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a noise control device that the ship position is difficult to catch by the underwater radiation noise.SOLUTION: A noise control device 10 includes: a noise control unit 30 having at least two of sub-control units, namely, a fin inclination control unit 31 to adjust inclination of the fins in-phase with each other installed respectively on both gunwales of a ship, a bubble-generation amount control unit 32 to adjust the bubble amount generating into the water from the ship by a bubble generation unit 52, a main engine noise control unit 33 to change the main shaft rotational speed and the propeller pitch of the ship at the same speed and a noise generation control unit 34 to adjust the noise generated by a noise generation unit 54 installed on the bottom of the ship; and a noise management unit 20 to collectively manage each command to at least two sub-control units based on the noise frequency mode.SELECTED DRAWING: Figure 8
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Inventors:
YOSHIDA YUTAKA
MARUTA HIROSHI
MARUTA HIROSHI
Application Number:
JP2017069538A
Publication Date:
November 08, 2018
Filing Date:
March 31, 2017
Export Citation:
Assignee:
MITSUBISHI HEAVY IND LTD
International Classes:
B63G13/00; B63B1/32; B63B39/06; B63H3/00; B63H21/21
Domestic Patent References:
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| JPH01148690A | 1989-06-12 | |||
| JPS6025598U | 1985-02-21 | |||
| JPH03505129A | 1991-11-07 | |||
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| JPS63145194A | 1988-06-17 | |||
| JPS58199290A | 1983-11-19 | |||
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Foreign References:
| US20040074980A1 | 2004-04-22 | |||
| EP0237891A2 | 1987-09-23 | |||
| CN101628619A | 2010-01-20 | |||
| US6439831B1 | 2002-08-27 | |||
| CN105882926A | 2016-08-24 |
Attorney, Agent or Firm:
Ryuichiro Mori
Masatake Shiga
Tadashi Takahashi
Tetsuo Yamazaki
Yasushi Matsunuma
Masatake Shiga
Tadashi Takahashi
Tetsuo Yamazaki
Yasushi Matsunuma