JPS5547435A - Signal processing circuit of light-sound analyzer - Google Patents

Signal processing circuit of light-sound analyzer

Info

Publication number
JPS5547435A
JPS5547435A JP11991978A JP11991978A JPS5547435A JP S5547435 A JPS5547435 A JP S5547435A JP 11991978 A JP11991978 A JP 11991978A JP 11991978 A JP11991978 A JP 11991978A JP S5547435 A JPS5547435 A JP S5547435A
Authority
JP
Japan
Prior art keywords
light
output
sound
autocorrelation
correlation
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP11991978A
Other languages
Japanese (ja)
Other versions
JPS5933215B2 (en
Inventor
Atsuo Watanabe
Masahiro Uno
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fuji Electric Co Ltd
Original Assignee
Fuji Electric Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fuji Electric Co Ltd filed Critical Fuji Electric Co Ltd
Priority to JP53119919A priority Critical patent/JPS5933215B2/en
Priority to DE19792938775 priority patent/DE2938775A1/en
Publication of JPS5547435A publication Critical patent/JPS5547435A/en
Publication of JPS5933215B2 publication Critical patent/JPS5933215B2/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
    • G01N29/44—Processing the detected response signal, e.g. electronic circuits specially adapted therefor
    • G01N29/4409—Processing the detected response signal, e.g. electronic circuits specially adapted therefor by comparison
    • G01N29/4436—Processing the detected response signal, e.g. electronic circuits specially adapted therefor by comparison with a reference signal
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
    • G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
    • G01N21/35—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light
    • G01N21/37—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light using pneumatic detection
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
    • G01N29/22—Details, e.g. general constructional or apparatus details
    • G01N29/24—Probes
    • G01N29/2456—Focusing probes
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
    • G01N29/22—Details, e.g. general constructional or apparatus details
    • G01N29/30—Arrangements for calibrating or comparing, e.g. with standard objects
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
    • G01N29/34—Generating the ultrasonic, sonic or infrasonic waves, e.g. electronic circuits specially adapted therefor
    • G01N29/346—Generating the ultrasonic, sonic or infrasonic waves, e.g. electronic circuits specially adapted therefor with amplitude characteristics, e.g. modulated signal
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
    • G01N29/44—Processing the detected response signal, e.g. electronic circuits specially adapted therefor
    • G01N29/46—Processing the detected response signal, e.g. electronic circuits specially adapted therefor by spectral analysis, e.g. Fourier analysis or wavelet analysis
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
    • G01N29/44—Processing the detected response signal, e.g. electronic circuits specially adapted therefor
    • G01N29/50—Processing the detected response signal, e.g. electronic circuits specially adapted therefor using auto-correlation techniques or cross-correlation techniques
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2291/00—Indexing codes associated with group G01N29/00
    • G01N2291/01—Indexing codes associated with the measuring variable
    • G01N2291/012—Phase angle

Landscapes

  • Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Mathematical Physics (AREA)
  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)

Abstract

PURPOSE:To measure the phase lag of light-sound output precisely and to obtain an exact light-sound specturm by feeding an individual light-sound output, which are provided from both light-sound cells of analyzing side and reference side, to three-set cascade circuits consisting of the multipliers and the integrators and by computing each output. CONSTITUTION:Light emitted from the light source 1 is modulated by the chopper 2, and is thrown to both the light-sound cells of the reference side and the analyzing side 7, 8 through the spectroscope 5 and the half mirror 6. The multiplier 14 operates the autocorrelation of reference output, another one 15 does the correlation of the reference output to the analyzed sample output, the last one 16 does the autocorrelation of analyzed sample output. The constant time integrators 17-19 integrate outputs of the multipliers 14-16 for a fixed time to obtain the correlation and autocorrelation. Each correlation is fed to the computer 24 through the AD converters 20-22, and the desired data is provided.
JP53119919A 1978-09-30 1978-09-30 Photoacoustic analyzer signal processing circuit Expired JPS5933215B2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP53119919A JPS5933215B2 (en) 1978-09-30 1978-09-30 Photoacoustic analyzer signal processing circuit
DE19792938775 DE2938775A1 (en) 1978-09-30 1979-09-25 Opto-acoustic spectrometer absorption measurement value processing - is by measuring phase difference between measurement and reference signals and deriving correlation functions

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP53119919A JPS5933215B2 (en) 1978-09-30 1978-09-30 Photoacoustic analyzer signal processing circuit

Publications (2)

Publication Number Publication Date
JPS5547435A true JPS5547435A (en) 1980-04-03
JPS5933215B2 JPS5933215B2 (en) 1984-08-14

Family

ID=14773416

Family Applications (1)

Application Number Title Priority Date Filing Date
JP53119919A Expired JPS5933215B2 (en) 1978-09-30 1978-09-30 Photoacoustic analyzer signal processing circuit

Country Status (1)

Country Link
JP (1) JPS5933215B2 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5897936A (en) * 1981-12-07 1983-06-10 Matsushita Electric Ind Co Ltd Signal transmitter
JPS61120041A (en) * 1984-11-16 1986-06-07 Yoshinori Sugitani Correlation photoacoustic imaging method
JP2015028476A (en) * 2013-07-05 2015-02-12 独立行政法人海上技術安全研究所 Detection device for sulfide mineral fine particle using optoacoustic effect, detection method for sulfide mineral fine particle and method for investigating or monitoring sulfide mineral
US20170153206A1 (en) * 2015-11-27 2017-06-01 Electronics And Telecommunications Research Institute Photo acoustic probe and photo acoustic measurement device including the same

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6159317U (en) * 1984-09-21 1986-04-21

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5897936A (en) * 1981-12-07 1983-06-10 Matsushita Electric Ind Co Ltd Signal transmitter
JPS61120041A (en) * 1984-11-16 1986-06-07 Yoshinori Sugitani Correlation photoacoustic imaging method
JPH0446374B2 (en) * 1984-11-16 1992-07-29 Yoshinori Sugitani
JP2015028476A (en) * 2013-07-05 2015-02-12 独立行政法人海上技術安全研究所 Detection device for sulfide mineral fine particle using optoacoustic effect, detection method for sulfide mineral fine particle and method for investigating or monitoring sulfide mineral
US20170153206A1 (en) * 2015-11-27 2017-06-01 Electronics And Telecommunications Research Institute Photo acoustic probe and photo acoustic measurement device including the same

Also Published As

Publication number Publication date
JPS5933215B2 (en) 1984-08-14

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