JPS564019A - Acoustic velocity measuring device - Google Patents
Acoustic velocity measuring deviceInfo
- Publication number
- JPS564019A JPS564019A JP7911779A JP7911779A JPS564019A JP S564019 A JPS564019 A JP S564019A JP 7911779 A JP7911779 A JP 7911779A JP 7911779 A JP7911779 A JP 7911779A JP S564019 A JPS564019 A JP S564019A
- Authority
- JP
- Japan
- Prior art keywords
- frequency
- acoustic velocity
- oscillator
- resonator
- intrinsic mode
- 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.)
- Pending
Links
Landscapes
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
Abstract
PURPOSE: To easily determine the acoustic velocity in a medium by finding the acoustic velocity from the measured values of the resonance frequency and the number of waves of an intrinsic mode by use of a sound source excited by a variable frequency oscillator or a wide band-pass oscillator and a resonator having an intrinsic mode resonated by the sound source.
CONSTITUTION: The output signal of a variable frequency oscillator 5 or a wide band-pass oscillator 5 is applied through an amplification circuit 4 to speakers 2. The output signal of a microphone 2 fitted to the side surface of a resonator 1 is introduced into a frequency analyzer 8 through an amplification circuit 7. By the frequency analyzer 8, the resonance frequency ωn and the frequency Kn of the intrinsic mode determined by the configuration of the resonator are sought. By the ratio of ωn to Kn the acoustic vealocity is determined. These operations can be automatically performed by a data processing device. Accordingly, the acoustic velocity can be easily determined even without knowledge as to the physical prop erty values such as the temperature and the pressure of the medium.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7911779A JPS564019A (en) | 1979-06-25 | 1979-06-25 | Acoustic velocity measuring device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7911779A JPS564019A (en) | 1979-06-25 | 1979-06-25 | Acoustic velocity measuring device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS564019A true JPS564019A (en) | 1981-01-16 |
Family
ID=13680965
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7911779A Pending JPS564019A (en) | 1979-06-25 | 1979-06-25 | Acoustic velocity measuring device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS564019A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6027149U (en) * | 1983-07-26 | 1985-02-23 | 渡辺 幹夫 | Installation equipment at the assembly gate |
CN106643934A (en) * | 2016-11-15 | 2017-05-10 | 宁波大学 | Calculation method for gas sound velocity |
CN109990855A (en) * | 2019-04-09 | 2019-07-09 | 宁波大学 | A kind of ultrasonic gas flowmeter mark condition velocity of sound calculation method |
-
1979
- 1979-06-25 JP JP7911779A patent/JPS564019A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6027149U (en) * | 1983-07-26 | 1985-02-23 | 渡辺 幹夫 | Installation equipment at the assembly gate |
CN106643934A (en) * | 2016-11-15 | 2017-05-10 | 宁波大学 | Calculation method for gas sound velocity |
CN109990855A (en) * | 2019-04-09 | 2019-07-09 | 宁波大学 | A kind of ultrasonic gas flowmeter mark condition velocity of sound calculation method |
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