Title:
WAVEGUIDE PIPE FOR ULTRASONIC SENSOR
Document Type and Number:
WIPO Patent Application WO/2021/215658
Kind Code:
A1
Abstract:
The present invention relates to a waveguide pipe for an ultrasonic sensor which not only shortens the minimum detectable distance of the ultrasonic sensor, but also can suppress the occurrence of unwanted exit reflection waves. The waveguide pipe for an ultrasonic sensor comprises: a first linear guide portion which guides, in the longitudinal direction, ultrasonic waves from the ultrasonic sensor provided on one side thereof; and a first curved guide portion which is formed on an end of the first linear guide portion and changes the propagation path of the ultrasonic waves to a curvature direction, wherein an end of the first curved guide portion is formed to protrude further downward than the end of the first linear guide portion. According to the present invention, it is possible to obtain effects of not only shortening the minimum detectable distance of an ultrasonic sensor, but also suppressing the occurrence of unwanted exit reflection waves.
Inventors:
KIM JIN-OH (KR)
AN JAE-HYUCK (KR)
AN JAE-HYUCK (KR)
Application Number:
PCT/KR2021/003007
Publication Date:
October 28, 2021
Filing Date:
March 11, 2021
Export Citation:
Assignee:
FOUNDATION SOONGSIL UNIV INDUSTRY COOPERATION (KR)
International Classes:
G01B17/00; G01H5/00; G01N29/24
Foreign References:
| CN202995040U | 2013-06-12 | |||
| KR20060098386A | 2006-09-18 | |||
| US4442512A | 1984-04-10 | |||
| KR101419410B1 | 2014-07-15 |
Other References:
LIM SUNG GU, KIM JIN OH: "Acoustic Directivity of an Ultrasonic Sensor Depending on Horn Guide Shape", TRANSACTIONS OF THE KOREAN SOCIETY FOR NOISE AND VIBRATION ENGINEERING, vol. 28, no. 6, 20 December 2018 (2018-12-20), pages 707 - 712, XP055860230, ISSN: 1598-2785, DOI: 10.5050/KSNVE.2018.28.6.707
Attorney, Agent or Firm:
CHOI, Hoon-Sik (KR)
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