公开(公告)号：EP4411333A1

公开(公告)日：2024-08-07

申请号：EP22875719.1

申请日：2022-09-02

Applicant: JFE Advantech Co. Ltd. ,  JFE Steel Corporation

Inventor： OKA Tomomichi ,  ODA Masahiro ,  KUSHIDA Yasuo ,  ISHIYAMA Kazuyo ,  MATSUI Yutaka

IPC: G01M3/24 ,  B64C27/08 ,  B64C39/02 ,  B64D47/08

CPC classification number: B64D47/08 ,  B64C27/08 ,  G01M3/24 ,  B64C39/02

Abstract: To provide a sound wave receiving device, a device for determining sound source direction, and a method for determining sound source direction capable of accurately determining the direction of a sound source while suppressing the influence of sound wave noise generated by rotor blades of an aerial vehicle and external sounds which are reflections of the sound wave noise on surrounding structures.
A sound wave receiving device 5 includes: an aerial vehicle 10 having rotor blades 12; an array sensor 21 mounted on the aerial vehicle 10 and including a plurality of microphones 21a; a first shielding member 40 installed between the rotor blades 12 and the array sensor 21, and suppressing an influence of sound wave noise generated by the rotor blades 12 on a sound wave received by the array sensor 21; and a second shielding member 50 provided along a peripheral portion of the array sensor 21, and suppressing reception by the array sensor 21 of external sound from outside a sound wave reception range set in advance for the sound wave.

公开(公告)号：EP3517991A1

公开(公告)日：2019-07-31

申请号：EP17852987.1

申请日：2017-09-15

Applicant: JFE Steel Corporation ,  JFE Advantech Co. Ltd.

Inventor： HAYASHI Koji ,  SUENAGA Kiyoka ,  MAEKAWA Shonosuke ,  ODA Masahiro ,  OGUNI Michihiro ,  KUSHIDA Yasuo

IPC: G01S3/802 ,  G01H3/00 ,  G01S7/56

Abstract: An object is to provide an ultrasound source azimuth determining apparatus that is compact and capable of measuring the azimuth of an ultrasound source over a wide search range at one time while reducing the effect of grating lobes.
An ultrasound source azimuth determining apparatus includes a camera configured to pick up an image of a measured object; an array sensor configured to measure a sound pressure of ultrasound originating from a direction of the measured object; computing means for generating a sound pressure map on the basis of sound pressure information of ultrasound acquired by the array sensor, and superimposing the sound pressure map and a picked-up image acquired by the camera to generate a composite image; and display means for displaying the composite image. The array sensor includes a total of greater than or equal to 9 and less than or equal to 25 surface mount sensors, and at least some of the surface mount sensors are arranged on an X-axis and a Y-axis in the same plane.