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WO2003031989A1 - Capteur unique permettant de mesurer la vitesse du vent et la direction du vent sans elements mobiles - Google Patents

Capteur unique permettant de mesurer la vitesse du vent et la direction du vent sans elements mobiles Download PDF

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Publication number
WO2003031989A1
WO2003031989A1 PCT/IT2002/000644 IT0200644W WO03031989A1 WO 2003031989 A1 WO2003031989 A1 WO 2003031989A1 IT 0200644 W IT0200644 W IT 0200644W WO 03031989 A1 WO03031989 A1 WO 03031989A1
Authority
WO
WIPO (PCT)
Prior art keywords
sensor according
bar
wind
previous
fact
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.)
Ceased
Application number
PCT/IT2002/000644
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English (en)
Other versions
WO2003031989B1 (fr
Inventor
Francesco Ramaioli
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to EP02783543A priority Critical patent/EP1497665A1/fr
Publication of WO2003031989A1 publication Critical patent/WO2003031989A1/fr
Publication of WO2003031989B1 publication Critical patent/WO2003031989B1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P5/00—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft
    • G01P5/02—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft by measuring forces exerted by the fluid on solid bodies, e.g. anemometer

Definitions

  • TITLE SINGLE SENSOR TO MEASURE THE WIND SPEED AND THE WIND DIRECTION . WITHOUT PARTS IN MOVEMENT
  • the invention is composed of four main parts : one support ( element 1 fig. 1) which guarantees the fixing of the instrument to the surface or to the reference structure to measure the wind speed and the wind direction.
  • It can also be magnetic and/or with a sucker to facilitate the temporary application.
  • a bar ( element 2 fig. 1 ), fixed on the upper part of the support, is the sensitive part of the invention : it reacts passively to the stress imposed by the sphere ( 3 fig. 1).
  • the materials that can be used to build the bar (2 fig. 1) are the following : steeL aluminium, carbon and other compound materials.
  • a sphere (element 3 fig. 1) is situated on the upper part of the bar.
  • the sphere is the part that resists to the wind and receives a superficial pressure proportional to the sphere's diameter and to the intensity (or velocity) of the wind.
  • the wind speed gives a force to the sphere, that is trasmitted to the bar, perpendicularly to its axis.
  • the spherical shape is the best shape , because different shapes by changing position would alter the surface of the exposition to the wind, causing swing of the structure with consequent alterations of the measure.
  • the sphere can be built, in indicative way and not obligatory , with expansive materials, covered with glass fibers and/or carbon fibers, or plastic materials and/or resin, or aluminium. If possible, the sphere must be light and resistant not to generate another moment of inertia due to the weight of the ball with inevitable swings caused by the return of the energy due the elasticity of the bar.
  • the bar When the wind exerts his force on the spherical surface, the bar undergoes a deformation proportional to the wind speed bending ( in an imperceptible way) according to where the wind is coming from .
  • the easiest application is to stick passive extensometers so that they can measure the deformations and/or the extension along the principal axis of the bar.
  • the number and the angular positioning of the detectors in order to measure the origin of the wind as to a cardinal point, it is suggested that the minimum number is 3 ; the detectors must be positioned at 120 degrees along the circumference determined by a perpendicular section as to the principal axis of the bar ( fig. 2 sec. AA).
  • the ideal number for the detectors is 4: with this number it is possible to obtain a positioning at 90 degrees along the circumference, determined as above ( fig. 3 sec. BB).
  • the detectors are connected to the electronic part of signal conditioning and signal elaboration: the signals can be read with different combinations to deduce the direction and/or the speed of the wind .
  • the single detector and/or the couple of detectors that measures the greater extension ( or compression) are elaborated.
  • the dimensioning of the bar can be obtained using the well known formulae of the mechanics, considering that it must undergo a deformation ( in indicative way and not obligatory) lower than 2%. with a wind of maximum intensity.
  • the dimensioning of the sphere can be obtained through the well known formulae of aereodynamics : considering the coefficient of aerodynamic penetration CX of a ball and its diameter, the pressure and the resistance force to the wind that the sphere transmits to the bar can be obtained.
  • the diameter of the sphere can be determined, considering the maximum wind speed which is to be measured .
  • the system can be, eventually, protected by using a covering 5 ( fig. 4) on which a connector 6 (fig. 4) can be mounted and it can be allocated in different positions, including the support.
  • the electronic circuit of conditioning and elaboration of electric signal of the sensor is not described because it is not the object of this patent : it can be carried out in different ways and there are systems to acquire data suitable to be used with this invention.
  • the invention can be used to measure "the relative speed" of any means of transport. and/or locomotion immersed in a fluid (for example the air), and it works in any other position in addition to the vertical one
  • Part a) brief description of the "previous condition of the technique " before the innovation.
  • the wind speed's sensors are based on the use of the tachometer dynamo ( speedometer dynamo) or phonic wheels, which are mechanically connected to a rotative system with shovels or with helix.
  • the number of turns detected while measuring is proportional to the speed of the wind.
  • This system has restrictions depending on the rotation speed of the shovels ( passive cavitation ), and it suffers from the turbulences caused by the rotation of the shovels. Besides , since they have parts in movement, they are subject to wear and tear and seizure caused by dust, ice, and so on.
  • the sensors of the direction are built with directional indicators, perpendicular to circular potentiometer which return different tensions depending on the position.
  • the invention has the purpose to measure the speed (or the force) of the wind and /or its direction through the use of a single sensor : the use of the sphere with the instrumented bar and the support, performs the duties normaly done by two separate sensors.
  • the single sensors use parts in movement which are subject to wear and tear and seizure, while the invention has no parts in movement.
  • Another innovative characteristic of the invention is that it can measure very weak and/or very strong winds, because it does not suffer from frictions and passive cavitations and turbulences due to the rotation of the shovels. Besides is very quick and precise during the measuring of the gusts, because it has no inertiae that alter the reading, while the rotating shovels keep turning even when the gust stops.
  • the invention has the following characteristics: it is easy to build, reliability , possible low price of sale, low costs of production, insensitivity to atmospheric agents , more resistance to lightning, more insensitivity to electrostatic charges, no maintenance, contemporary measures of the speed and the direction, a wide range of measures.
  • Part c 't analysis of the result reached and examples of what it has been obtained
  • the invention proved to be very advantageous and reliable, and since it has no parts in movement (constructive facility and low cost of production) it is not subject to wear and tear and seizure caused by dust, ice, and so on ( reliability and resistance to the atmospheric agents) , and it has no friction. It is not built with many parts ( low cost) . It can be particularly insensitive to electromagnetic interferences (EMC), it can resist the lightnings and the electrostatic charges, thanks to the use of extensometers / passive deformometer at low impedance. For example, in case of a lightning nearby the sensor, the sensor has a greater probability to support the event compared to other sensors. For this kind of application the electronic part of conditioning must be connected far from the main body.
  • EMC electromagnetic interferences

Landscapes

  • Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Indicating Or Recording The Presence, Absence, Or Direction Of Movement (AREA)

Abstract

L'invention concerne un capteur ne comprenant pas d'éléments mobiles, qui permet la détection de la vitesse et de la direction du vent, composé d'un seul module structurel. Ce capteur se compose d'un support (1) de fixation, d'une barre (2) métallique de section circulaire placée en position verticale, et d'une sphère (3) placée au sommet de la barre. Plusieurs détecteurs d'allongement et/ou détecteurs (4) de déformation sont appliqués sur la partie de la barre située à proximité du support, dans la direction de l'axe de la barre. Un élément (5) protecteur équipé d'un connecteur (6) protège la barre et assure la connexion du capteur permettant la lecture des signaux. Lorsque le vent exerce sa force sur la surface sphérique, la barre subit une déformation proportionnelle à la vitesse du vent, se courbant de manière imperceptible en fonction du sens du vent. Les capteurs d'allongement et/ou de déformation mesurent cette déformation et sont connectés à un circuit électronique de traitement et de production de signal.
PCT/IT2002/000644 2001-10-10 2002-10-09 Capteur unique permettant de mesurer la vitesse du vent et la direction du vent sans elements mobiles Ceased WO2003031989A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP02783543A EP1497665A1 (fr) 2001-10-10 2002-10-09 Capteur unique permettant de mesurer la vitesse du vent et la direction du vent sans elements mobiles

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITPV2001A000009 2001-10-10
ITPV20010009 ITPV20010009A1 (it) 2001-10-10 2001-10-10 Sensore unico per le misure di velocita' e direzione del vento, senzaparti in movimento

Publications (2)

Publication Number Publication Date
WO2003031989A1 true WO2003031989A1 (fr) 2003-04-17
WO2003031989B1 WO2003031989B1 (fr) 2003-08-14

Family

ID=11453717

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IT2002/000644 Ceased WO2003031989A1 (fr) 2001-10-10 2002-10-09 Capteur unique permettant de mesurer la vitesse du vent et la direction du vent sans elements mobiles

Country Status (3)

Country Link
EP (1) EP1497665A1 (fr)
IT (1) ITPV20010009A1 (fr)
WO (1) WO2003031989A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2623993A1 (fr) * 2012-02-01 2013-08-07 IRDAM Institut de Recherches et Développements Aérologiques Marketing SA Dispositif de mesure de vitesse et sens du vent
CN103543287A (zh) * 2013-10-31 2014-01-29 东南大学 一种球形风速风向传感器结构
DE102014207929B3 (de) * 2014-04-28 2015-10-22 DB Systemtechnik GmbH Vorrichtung zur aerodynamischen Messung an Stromabnehmern
WO2017031508A1 (fr) * 2015-08-20 2017-02-23 Witthuhn Russell Dispositif électronique de mesure du vent
EP3399320A1 (fr) * 2017-05-02 2018-11-07 Rijksuniversiteit Groningen Élément de capteur et procédé de mesure des caractéristiques hydrodynamiques de champ proche à grande échelle

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3878714A (en) * 1972-01-17 1975-04-22 Omf California Inc Apparatus for determining the velocity and the direction of relative motion thereof with respect to a fluid and with regard to a direction of reference, and the use of said apparatus
SU481839A1 (ru) * 1973-06-01 1975-08-25 Московский Инженерно-Строительный Институт Им.Куйбышева Датчик скорости потока жидкости
JPS566111A (en) * 1979-06-28 1981-01-22 Shimadzu Corp Wind energy meter
FR2476322A1 (fr) * 1980-02-15 1981-08-21 Gueniot Xavier Anemometre
US4557150A (en) * 1982-10-26 1985-12-10 Kabushiki Kaisha Ishida Koki Seisakusho Load cell
US4631958A (en) * 1983-04-15 1986-12-30 Canadian Patents And Development Limited Force-balance drag anemometer
DE4129199A1 (de) * 1991-09-03 1993-03-04 Hartmut Dr Sc Nat Prandke Sensor zur kleinskaligen stroemungsmessung in gewaessern
US5421198A (en) * 1993-12-10 1995-06-06 Windrop Weather Devices Weather monitoring apparatus and method
US6370949B1 (en) * 1999-09-14 2002-04-16 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Extreme wind velocity measurement system

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3878714A (en) * 1972-01-17 1975-04-22 Omf California Inc Apparatus for determining the velocity and the direction of relative motion thereof with respect to a fluid and with regard to a direction of reference, and the use of said apparatus
SU481839A1 (ru) * 1973-06-01 1975-08-25 Московский Инженерно-Строительный Институт Им.Куйбышева Датчик скорости потока жидкости
JPS566111A (en) * 1979-06-28 1981-01-22 Shimadzu Corp Wind energy meter
FR2476322A1 (fr) * 1980-02-15 1981-08-21 Gueniot Xavier Anemometre
US4557150A (en) * 1982-10-26 1985-12-10 Kabushiki Kaisha Ishida Koki Seisakusho Load cell
US4631958A (en) * 1983-04-15 1986-12-30 Canadian Patents And Development Limited Force-balance drag anemometer
DE4129199A1 (de) * 1991-09-03 1993-03-04 Hartmut Dr Sc Nat Prandke Sensor zur kleinskaligen stroemungsmessung in gewaessern
US5421198A (en) * 1993-12-10 1995-06-06 Windrop Weather Devices Weather monitoring apparatus and method
US6370949B1 (en) * 1999-09-14 2002-04-16 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Extreme wind velocity measurement system

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
DONELAN M A, MOTYCKA J: "Miniature Drag Sphere Velocity Probe", REV.SCI.INSTRUM., vol. 49, no. 3, March 1978 (1978-03-01), pages 298 - 304, XP009004632 *
PATENT ABSTRACTS OF JAPAN vol. 005, no. 052 (P - 056) 11 April 1981 (1981-04-11) *

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2623993A1 (fr) * 2012-02-01 2013-08-07 IRDAM Institut de Recherches et Développements Aérologiques Marketing SA Dispositif de mesure de vitesse et sens du vent
CN103543287A (zh) * 2013-10-31 2014-01-29 东南大学 一种球形风速风向传感器结构
DE102014207929B3 (de) * 2014-04-28 2015-10-22 DB Systemtechnik GmbH Vorrichtung zur aerodynamischen Messung an Stromabnehmern
WO2017031508A1 (fr) * 2015-08-20 2017-02-23 Witthuhn Russell Dispositif électronique de mesure du vent
EP3399320A1 (fr) * 2017-05-02 2018-11-07 Rijksuniversiteit Groningen Élément de capteur et procédé de mesure des caractéristiques hydrodynamiques de champ proche à grande échelle

Also Published As

Publication number Publication date
EP1497665A1 (fr) 2005-01-19
ITPV20010009A1 (it) 2003-04-10
WO2003031989B1 (fr) 2003-08-14

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