EG18775A - A method for measuring length, and apparatus for implementing the method - Google Patents
A method for measuring length, and apparatus for implementing the methodInfo
- Publication number
- EG18775A EG18775A EG1990A EG1990A EG18775A EG 18775 A EG18775 A EG 18775A EG 1990 A EG1990 A EG 1990A EG 1990 A EG1990 A EG 1990A EG 18775 A EG18775 A EG 18775A
- Authority
- EG
- Egypt
- Prior art keywords
- column
- frequency
- length
- resonance chamber
- wave
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/22—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
- G01F23/28—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring the variations of parameters of electromagnetic or acoustic waves applied directly to the liquid or fluent solid material
- G01F23/296—Acoustic waves
- G01F23/2966—Acoustic waves making use of acoustical resonance or standing waves
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/22—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
- G01F23/28—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring the variations of parameters of electromagnetic or acoustic waves applied directly to the liquid or fluent solid material
- G01F23/284—Electromagnetic waves
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
- G01S13/02—Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
- G01S13/06—Systems determining position data of a target
- G01S13/08—Systems for measuring distance only
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S15/00—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems
- G01S15/02—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems using reflection of acoustic waves
- G01S15/06—Systems determining the position data of a target
- G01S15/08—Systems for measuring distance only
-
- 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
- G01N2291/02—Indexing codes associated with the analysed material
- G01N2291/028—Material parameters
- G01N2291/02836—Flow rate, liquid level
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- General Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Acoustics & Sound (AREA)
- Thermal Sciences (AREA)
- Fluid Mechanics (AREA)
- Computer Networks & Wireless Communication (AREA)
- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
- Length Measuring Devices Characterised By Use Of Acoustic Means (AREA)
- Length Measuring Devices With Unspecified Measuring Means (AREA)
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
- Length Measuring Devices By Optical Means (AREA)
- Apparatus For Radiation Diagnosis (AREA)
- Measurement And Recording Of Electrical Phenomena And Electrical Characteristics Of The Living Body (AREA)
- Magnetic Resonance Imaging Apparatus (AREA)
- Arrangements For Transmission Of Measured Signals (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT0006889A AT393738B (de) | 1989-01-16 | 1989-01-16 | Laengenmessverfahren |
AT237589A AT397430B (de) | 1989-10-16 | 1989-10-16 | Vorrichtung zur längenbestimmung |
Publications (1)
Publication Number | Publication Date |
---|---|
EG18775A true EG18775A (en) | 1994-03-30 |
Family
ID=25591321
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EG1990A EG18775A (en) | 1989-01-16 | 1990-01-15 | A method for measuring length, and apparatus for implementing the method |
Country Status (12)
Country | Link |
---|---|
US (1) | US5099691A (xx) |
EP (1) | EP0379855B1 (xx) |
JP (1) | JPH02228516A (xx) |
CN (1) | CN1019997C (xx) |
AT (1) | ATE93958T1 (xx) |
AU (1) | AU620488B2 (xx) |
CA (1) | CA2007355A1 (xx) |
DE (1) | DE58905471D1 (xx) |
EG (1) | EG18775A (xx) |
HU (1) | HU214537B (xx) |
RU (1) | RU2037141C1 (xx) |
YU (1) | YU5790A (xx) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1995002177A1 (en) * | 1993-07-06 | 1995-01-19 | Robert Willi Schade | Improvements in or relating to the measurement of bodies |
CN1322335C (zh) * | 2002-06-07 | 2007-06-20 | 株式会社岛精机制作所 | 距离测量方法和用于所述方法的装置 |
WO2004095058A1 (ja) * | 2003-04-22 | 2004-11-04 | Shima Seiki Manufacturing, Ltd. | 距離測定方法とその装置 |
CN102155905B (zh) * | 2011-03-28 | 2012-10-24 | 中国矿业大学 | 一种锚杆长度的无损测量装置及方法 |
RU2556292C1 (ru) * | 2014-03-28 | 2015-07-10 | Федеральное государственное бюджетное учреждение науки Институт проблем управления им. В.А. Трапезникова Российской академии наук | Способ измерения уровня жидкости в емкости |
WO2015186177A1 (ja) * | 2014-06-02 | 2015-12-10 | 株式会社フロム | 液量計測装置 |
DE102016112309A1 (de) | 2016-07-05 | 2018-01-11 | Endress + Hauser Gmbh + Co. Kg | Vorrichtung zur Bestimmung und/oder Überwachung zumindest einer Prozessgröße |
CN107063143B (zh) * | 2017-04-28 | 2019-07-19 | 大连交通大学 | 一种高精度超声波位移测量系统 |
RU2682565C1 (ru) * | 2017-12-26 | 2019-03-19 | федеральное государственное автономное образовательное учреждение высшего образования "Южный федеральный университет" (Южный федеральный университет) | Способ измерения длины электропроводного объекта |
CN108225226A (zh) * | 2018-01-17 | 2018-06-29 | 河南中烟工业有限责任公司 | 一种超声脉冲回波式烟支滤棒长度测量方法 |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB842241A (en) * | 1957-10-31 | 1960-07-27 | Magnaflux Corp | Improvements in or relating to sonic thickness measuring apparatus |
US3237445A (en) * | 1962-08-20 | 1966-03-01 | American Mach & Foundry | Ultrasonic inspection device |
FR1467228A (fr) * | 1965-12-16 | 1967-01-27 | Commissariat Energie Atomique | Procédé de mesure d'un déplacement et dispositif en faisant application |
BE759483R (fr) * | 1969-12-08 | 1971-04-30 | Commissariat Energie Atomique | Procede de mesure d'un deplacement et dispositif en faisant applicatio |
DE2144472C3 (de) * | 1971-09-06 | 1974-08-01 | Gosudarstwennij Uniwersitet Imeni 300 Letija Wossojedinenija Ukrainij S Rossiej, Dnepropetrowsk (Sowjetunion) | Verfahren und Einrichtung zur berührungslosen Messung der Dicke metallischer Objekte |
FR2185095A6 (xx) * | 1972-05-16 | 1973-12-28 | Commissariat Energie Atomique | |
US3798959A (en) * | 1972-08-11 | 1974-03-26 | Bowles Fluidics Corp | Acoustic gauge and fluidic signal processing circuitry therefor |
DE2312062C2 (de) * | 1973-03-10 | 1974-08-01 | Gesellschaft Fuer Kernforschung Mbh, 7500 Karlsruhe | Wanddicken-Meßgerät, nach dem Ultraschall-Immersions-Resonanzverfahren |
DE3117236A1 (de) * | 1981-04-30 | 1982-11-18 | Agfa-Gevaert Ag, 5090 Leverkusen | Verfahren zur abtastung von gegenstaenden |
US4584676A (en) * | 1982-03-15 | 1986-04-22 | Measurement Systems, Inc. | Method of and apparatus for pipe length measurement |
US4653327A (en) * | 1986-04-10 | 1987-03-31 | General Motors Corporation | Acoustical inspection method for inspecting the ceramic coating of catalytic converter monolith substrates |
JPH0645928B2 (ja) * | 1986-11-10 | 1994-06-15 | ワ−ルドインタ−フエイスラボラトリ−株式会社 | コンパクシヨンパイル工法におけるパイル材料の排出量測定方法 |
-
1989
- 1989-12-13 EP EP89890318A patent/EP0379855B1/de not_active Expired - Lifetime
- 1989-12-13 DE DE89890318T patent/DE58905471D1/de not_active Expired - Fee Related
- 1989-12-13 AT AT89890318T patent/ATE93958T1/de not_active IP Right Cessation
- 1989-12-15 HU HU896625A patent/HU214537B/hu not_active IP Right Cessation
- 1989-12-25 JP JP1336158A patent/JPH02228516A/ja active Pending
-
1990
- 1990-01-04 AU AU47672/90A patent/AU620488B2/en not_active Ceased
- 1990-01-08 US US07/462,032 patent/US5099691A/en not_active Expired - Fee Related
- 1990-01-09 CA CA002007355A patent/CA2007355A1/en not_active Abandoned
- 1990-01-10 CN CN90100100A patent/CN1019997C/zh not_active Expired - Fee Related
- 1990-01-12 YU YU5790A patent/YU5790A/sh unknown
- 1990-01-15 EG EG1990A patent/EG18775A/xx active
- 1990-01-15 RU SU904742975A patent/RU2037141C1/ru active
Also Published As
Publication number | Publication date |
---|---|
CN1044529A (zh) | 1990-08-08 |
EP0379855A1 (de) | 1990-08-01 |
RU2037141C1 (ru) | 1995-06-09 |
HU214537B (hu) | 1998-03-30 |
ATE93958T1 (de) | 1993-09-15 |
YU5790A (sh) | 1994-06-10 |
HUT53969A (en) | 1990-12-28 |
JPH02228516A (ja) | 1990-09-11 |
CA2007355A1 (en) | 1990-07-16 |
DE58905471D1 (de) | 1993-10-07 |
AU4767290A (en) | 1990-07-19 |
HU896625D0 (en) | 1990-02-28 |
US5099691A (en) | 1992-03-31 |
CN1019997C (zh) | 1993-03-03 |
AU620488B2 (en) | 1992-02-20 |
EP0379855B1 (de) | 1993-09-01 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EG18775A (en) | A method for measuring length, and apparatus for implementing the method | |
US4200399A (en) | Resonant optoacoustic spectroscopy apparatus | |
Tolt et al. | Separation devices based on forced coincidence response of fluid‐filled pipes | |
KR830010374A (ko) | 유동 검지기 | |
JPS6465902A (en) | Limit oscillator | |
DK0940658T3 (da) | Ultralydsdetektor til detektering af niveauet af væsker | |
WO1993001485A1 (en) | Fluid sampling system | |
KR0160294B1 (ko) | 압력 변조된 적외선 가스 분석기 및 방법 | |
Tam et al. | Optical generation and detection of acoustic pulse profiles in gases for novel ultrasonic absorption spectroscopy | |
Aoki et al. | Impulsive optic-acoustic effect of CO2, SF6 and NH3 molecules | |
Cheyne et al. | Phase velocity measurements in bubbly liquids using a fiber optic laser interferometer | |
Jarman et al. | The sonically induced cavitation of liquid helium | |
JPH0365276A (ja) | 超音波システム | |
ATE170701T1 (de) | Einrichtung zum erzeugen eines plasmas | |
Kozlov | Interrelation of the flow separation and stability | |
Burdukov et al. | Shock wave in a gas-liquid medium | |
Dontsov | Structure and dynamics of finite-amplitude pressure perturbations in a porous medium saturated with gassy fluid | |
SU1437772A1 (ru) | Способ определени концентрации свободного газа в газожидкостной среде и устройство дл его осуществлени | |
US4480313A (en) | Method of determining sound propagation | |
Gupta et al. | Theoretical model of an optoacoustic detector | |
Mosse et al. | Spectral Analysis of Cavitation Noise in Cryogenic Liquids | |
Vroulis et al. | Cavitation in liquid helium using a vibrating piston | |
TH8743EX (th) | วิธีการสำหรับวัดความยาวและเครื่องมือสำหรับดำเนินการตามวิธีการวัด | |
TH8743A (th) | วิธีการสำหรับวัดความยาวและเครื่องมือสำหรับดำเนินการตามวิธีการวัด | |
Gagné et al. | Energy relaxation time in a gas mixture measured by a photothermal probe beam deflection technique |