Title:
ULTRASONIC RECEIVER
Document Type and Number:
Japanese Patent JP2018179626
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To enable easily analyzable output data to be obtained by a compact and low cost configuration, and in an apparatus diagnosing device, to detect abnormality that indicates a symptom of apparatus fault.SOLUTION: The present invention comprises an acoustic-electric conversion unit 10 equipped with n acoustic-electric converters 10-I to 10-n having different resonance frequencies f-f; and an amplification unit 12 having rectification amplifiers 12-I to 12-n for amplifying each of the signals outputted from the acoustic-electric conversion unit 10. The acoustic-electric converters 10-I to 10-n have sharp sensitivity peaks at the respective resonance frequencies and, by adjusting these resonance frequencies to a frequency that indicates abnormality and analyzing the patterns of frequency signal strength extracted from the acoustic-electric conversion unit 10 and the amplification unit 12, abnormality that indicates a symptom of fault is precisely detected. The plurality of acoustic-electric converters constitute a piezoelectric type minute acoustic-electric converter array fabricated on the same substrate.SELECTED DRAWING: Figure 1
Inventors:
SESHIMOTO AKIRA
YAMAZAKI KIMIYOSHI
KOUCHI HIROYUKI
YAMAZAKI KIMIYOSHI
KOUCHI HIROYUKI
Application Number:
JP2017076435A
Publication Date:
November 15, 2018
Filing Date:
April 07, 2017
Export Citation:
Assignee:
NEW JAPAN RADIO CO LTD
International Classes:
G01H11/08; G01M99/00; H02H5/00; H04R1/26; H04R3/00; H04R17/00
Domestic Patent References:
| JPH04212054A | 1992-08-03 | |||
| JP2003075284A | 2003-03-12 | |||
| JP2003107156A | 2003-04-09 | |||
| JP2013093065A | 2013-05-16 | |||
| JPH09318431A | 1997-12-12 | |||
| JP2007051952A | 2007-03-01 | |||
| JPH0462468A | 1992-02-27 | |||
| JPS6361920A | 1988-03-18 | |||
| JPS60260848A | 1985-12-24 |
Foreign References:
| US20150215705A1 | 2015-07-30 |
Attorney, Agent or Firm:
Yasuto Ogata