SE9403028L - Ways of measuring vibration of a measuring object - Google Patents
Ways of measuring vibration of a measuring objectInfo
- Publication number
- SE9403028L SE9403028L SE9403028A SE9403028A SE9403028L SE 9403028 L SE9403028 L SE 9403028L SE 9403028 A SE9403028 A SE 9403028A SE 9403028 A SE9403028 A SE 9403028A SE 9403028 L SE9403028 L SE 9403028L
- Authority
- SE
- Sweden
- Prior art keywords
- ultrasonic
- test object
- frequency
- measuring
- vibration
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- G01H9/00—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by using radiation-sensitive means, e.g. optical means
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
Abstract
In a method for measuring the vibrations of a test object, an ultrasonic measuring signal having a frequency that is much higher than the vibration frequency of the test object (3) is transmitted from an ultrasonic transmitter (2) towards the vibrating test object. The ultrasonic signal reflected from the test object is detected by an ultrasonic receiver (4) and is frequency-demodulated, and the frequency-demodulated signal is frequency-analysed with a view to determining the vibration frequency and/or the maximum vibration velocity of the test object. Before the vibration measurement, the absence of signals interfering with the ultrasonic signal reflected from the test object is ensured by transmitting from the ultrasonic transmitter (2) an ultrasonic burst signal having the same frequency as the ultrasonic measuring signal. Any signals received by the ultrasonic receiver (4) outside a predetermined time interval for the reception of the ultrasonic burst signal reflected against the test object (3) are essentially eliminated by altering the direction and/or distance of the ultrasonic transmitter and/or the ultrasonic receiver in relation to the test object.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE9403028A SE9403028L (en) | 1994-09-12 | 1994-09-12 | Ways of measuring vibration of a measuring object |
AU35366/95A AU3536695A (en) | 1994-09-12 | 1995-09-11 | Method for measuring the vibrations of a test object |
PCT/SE1995/001018 WO1996008700A1 (en) | 1994-09-12 | 1995-09-11 | Method for measuring the vibrations of a test object |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE9403028A SE9403028L (en) | 1994-09-12 | 1994-09-12 | Ways of measuring vibration of a measuring object |
Publications (3)
Publication Number | Publication Date |
---|---|
SE9403028D0 SE9403028D0 (en) | 1994-09-12 |
SE502506C2 SE502506C2 (en) | 1995-10-30 |
SE9403028L true SE9403028L (en) | 1995-10-30 |
Family
ID=20395194
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SE9403028A SE9403028L (en) | 1994-09-12 | 1994-09-12 | Ways of measuring vibration of a measuring object |
Country Status (3)
Country | Link |
---|---|
AU (1) | AU3536695A (en) |
SE (1) | SE9403028L (en) |
WO (1) | WO1996008700A1 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2463257A (en) | 2008-09-04 | 2010-03-10 | Elio Poggiagliolmi | Stabilized platform for an ultrasonic Doppler vibrometer for sensing motion of a surface |
US10240972B2 (en) | 2015-08-05 | 2019-03-26 | Lovejoy Controls Corporation | Doppler ultrasonic velocity probe |
CN109143245A (en) * | 2018-09-18 | 2019-01-04 | 国网江苏省电力有限公司盐城供电分公司 | One kind contactless vibration signal measuring system based on ultrasound and its measurement method |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2733597A (en) * | 1956-02-07 | Apparatus for measuring vibrations | ||
JPS51126171A (en) * | 1974-12-23 | 1976-11-04 | Yokogawa Hewlett Packard Ltd | Detecting device of moving object |
DE3404032A1 (en) * | 1984-02-06 | 1985-08-08 | Robert Bosch Gmbh, 7000 Stuttgart | Ultrasonic sensor for movement detection |
-
1994
- 1994-09-12 SE SE9403028A patent/SE9403028L/en not_active IP Right Cessation
-
1995
- 1995-09-11 AU AU35366/95A patent/AU3536695A/en not_active Abandoned
- 1995-09-11 WO PCT/SE1995/001018 patent/WO1996008700A1/en active Application Filing
Also Published As
Publication number | Publication date |
---|---|
WO1996008700A1 (en) | 1996-03-21 |
SE502506C2 (en) | 1995-10-30 |
SE9403028D0 (en) | 1994-09-12 |
AU3536695A (en) | 1996-03-29 |
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Legal Events
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