Title:
SONICATOR AND ULTRASONIC SYSTEM
Document Type and Number:
WIPO Patent Application WO/2023/032474
Kind Code:
A1
Abstract:
This sonicator (1) comprises: a drive unit (41) configured to be capable of driving an ultrasonic sensor element (51) such that a plurality of ultrasonic waves are transmitted sequentially over time; a reception signal output unit (3) that outputs a reception signal (Rs) on the basis of reception of the ultrasonic waves; an envelope detection unit (42) that detects an envelope of the reception signal and outputs an envelope signal (Env); and a height detection unit (43) that detects the height of an obstacle on the basis of at least one of a comparative assessment based on the ratio of the peaks of two envelope signals generated for each of the transmitted ultrasonic waves, and a comparative assessment based on the temporal difference between the peaks of the two envelope signals generated for each of the transmitted ultrasonic waves.
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Inventors:
FUNAKOSHI HIKARU (JP)
NAGAI TAKASHI (JP)
NAGAI TAKASHI (JP)
Application Number:
PCT/JP2022/027380
Publication Date:
March 09, 2023
Filing Date:
July 12, 2022
Export Citation:
Assignee:
ROHM CO LTD (JP)
International Classes:
G01S7/527; G01S15/931
Domestic Patent References:
| WO2009013054A1 | 2009-01-29 | |||
| WO2020212243A1 | 2020-10-22 |
Foreign References:
| JP2005337954A | 2005-12-08 | |||
| EP1764630A1 | 2007-03-21 | |||
| JP2018204964A | 2018-12-27 | |||
| JP2015166705A | 2015-09-24 |
Attorney, Agent or Firm:
SANO PATENT OFFICE (JP)
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