WO2017031508A1 - Dispositif électronique de mesure du vent - Google Patents

Dispositif électronique de mesure du vent Download PDF

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Publication number
WO2017031508A1
WO2017031508A1 PCT/ZA2015/050005 ZA2015050005W WO2017031508A1 WO 2017031508 A1 WO2017031508 A1 WO 2017031508A1 ZA 2015050005 W ZA2015050005 W ZA 2015050005W WO 2017031508 A1 WO2017031508 A1 WO 2017031508A1
Authority
WO
WIPO (PCT)
Prior art keywords
wind
anemometer
strain gauge
load cell
sphere
Prior art date
Application number
PCT/ZA2015/050005
Other languages
English (en)
Inventor
Russell WITTHUHN
Original Assignee
Witthuhn Russell
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 Witthuhn Russell filed Critical Witthuhn Russell
Priority to PCT/ZA2015/050005 priority Critical patent/WO2017031508A1/fr
Publication of WO2017031508A1 publication Critical patent/WO2017031508A1/fr

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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

  • a electronic wind measuring instrument implementing load cell transducers to measure wind speed and wind direction.
  • WindBall In this description the invention can be referred to as a "WindBall".
  • the ball can be referred to as a sphere.
  • the air flow over a sphere provides an ideal geometry to measure a consistent force for wind speed and direction at any prevailing wind angle.
  • a load cell is a transducer that creates a electrical signal whose magnitude is directly proportional to the force been measured.
  • the wind velocity is measured as a physical vector quantity; both magnitude and direction are needed to define it.
  • the scalar or "single number” absolute value (magnitude) of velocity is called "speed", a quantity that is measured in metres per second (m/s or m-s-1 ) in the SI (metric) system.
  • This invention relates to a device measuring wind speed by using two or more geometrically angled load cell transducers with each load cell representing a vector axis. Wind speed and direction measurement takes place by reading the magnitude of force exerted on the sphere in all vectors simultaneously.
  • the vector readings determine direction and speed of the wind through various geometric calculations.
  • the measurement can be displayed electronically through an interpreter such as a micro-controller or computer.
  • the two or more load cells act as transducers which create an electrical signal whose magnitude is directly proportional to the force being measured.
  • the force being the winds resistance against the sphere.
  • the calculation for wind speed and direction formula used for the two or more load cell transducers determines the final result on a micro-controller or similar.
  • the invention will be presented as a different method and instrument for reading wind speed and direction. Different size sphere's or objects can be implemented to calculate different aspects of the technical field.
  • the technical field being a wind speed and wind direction measuring device.
  • the device's sphere is deliberate and intended to portray only one facet and that is a perfect round ball or sphere to ensure equal readings or measurements taken when the wind strikes the surface of the ball.
  • Each load cell can be able to measure negative and positive movement which allows the X and Y and -X and -Y to cover the full circumference of measurement.
  • Multi Axis Load cell Although substantially more expensive and increasing the WindBall's manufacturing price, a Multi Axis Load cell can be implemented. Multi Axis Load cell's are designed to measure a multiple of forces and moments simultaneously with a single Load Cell.
  • Wind measurement device's and more-so in this regard related to the invention of so called anemometers are common weather station sensors and there are a few derivatives in the line of "spinning" or rotating cups or a bladed fan rotating in moving air.
  • the 'Wind Ball' is substantially cheaper to manufacture compared to the equivalent accuracy of high-end sensors such as those using laser, ultrasonic or pressure to accomplish the same outcome.
  • the 'Wind Ball' sensor can be incorporate as part of a hand held electronic wind indicator or as a stand-alone wind sensor affixed to a pole or solid surface connected to a weather station.
  • the inventor has tried different anemometers and wind-vane types from different manufacturers over the years and soon discovered that most used bearings and other components that wore out within a short period, even that of the more costly sensors.
  • the inventor felt he needed to find a affordable technology to read the wind accurately and implore a method of non-moving parts for longevity.
  • the inventor initially considered developing the ultrasonic wind sensor but found it to contain expensive components as well as it having to rely on difficult mathematical calculations for accuracy.
  • the invention is a method of determining wind speed and wind direction.
  • an electronic device for measuring wind speed and wind direction
  • the electronic device comprises of a sphere (Ball) and two or more load cells connected to a digital interpreter which processes the information to be displayed.
  • the electronic device captures vector forces from different angles pushed against the balls surface.
  • the electronic device can be coupled to a weather station.
  • the electronic device can vary in size according to the requirement of either a free standing hand held unit or a mounted unit. For larger weather stations, a larger device can be utilised for increased sensitivity.
  • the information is gathered by two or more load cells or one or more multi-axis load cell transducers.
  • the two or more load cell transducers each represent differing axes of measurement of vector forces.
  • the measurements can be portrayed in various units of measurement. Formats including Knots, Miles-Per-Hour, Kilometres-Per-Hour etc.
  • the sleeve or outer jacket protecting the device can be insulated with a metal sheath to prevent outside electromagnetic interference.
  • the outer sleeve can be of one mould or two or th ee parts.
  • an exchangeable sphere to switch ball sizes can be used for different magnitudes of sensitivity.
  • a sphere is utilised for a good even geometry measurement.
  • a sphere is used for accurate measurements combined with geometrically positioned load cell transducers each representing a differing axis making an accurate measurement of wind force on a sphere.
  • Figure 1 is the WindBall device measuring wind speed and direction
  • FIG. 2 is a diagram of the WindBall depicting the components at work
  • FIG. 3 is a flow diagram depicting the three steps of calibration with the WindBall device
  • Figure 1 is an embodiment of a sphere 110 attached to a inner upper load cell transducer 22.
  • the outer protective cover 28 is attached to a Platform/base 55.
  • the base 55 can be mounted to a weather station, a weather pole or the like.
  • wind velocity 220 air flow on a sphere 110 and is measured by a combination of positive and negative vectors X 75, Y 75 and -x 75, -y 75 derived from two load cell transducers 22 and 24.
  • a digital output is read from circuits 35 and 36 which incorporate a ADC (analogue to digital converter).
  • a micro-controller 43 calculates the wind speed and direction read from the ADC and displays it on a digital LCD or similar display.
  • Wind velocity 220 is captured by two load cell transducer's 22/24 mounted at a 90° angle to one another and one above the other.
  • Next Analog-to-Digital Conversion (ADC) takes place for each load cell transducer 35/36 and read by the micro-controller 43 which sends the data for display.
  • ADC Analog-to-Digital Conversion
  • FIG 3 embodies the electric flow of the WindBall.
  • the excitation provided by a power supply for load cells 8 and 9 are typically several volts for each load cell transducer as is required for them to operate, although this may be greater depending on the load cell size.
  • the type of load cell transducer typically used in the WindBall is the common Strain gauge load cell 22/24 used in scales for weight measurement. As the wind pushes against the ball, the forces are read by the strain gauge load cell which detects fine changes in force pressure. By incorporating the smaller extremely sensitive strain gauge load cells, one is able to read a large window of forces and therefore wind speeds.

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

La présente invention concerne un dispositif de mesure du vent ou anémomètre. Le dispositif est construit de manière à être plus compact, rigide et robuste que lesdits anémomètres présentant des coupelles rotatives et une girouette mobile. Des cellules de charge (22, 24) sont utilisées pour mesurer la vitesse du vent sur les axes x et y capturée par une sphère (110) montée sur la cellule de charge supérieure. Le couvercle de base et externe (28) est monté sur la cellule de charge inférieure interne. Des forces de vent appuyant contre la sphère (110) peuvent être mesurées avec précision en vitesse du vent. En raison de la rondeur symétrique et de la géométrie de la sphère (110) exposée, un relevé de vent cohérent peut être obtenu indépendamment de l'angle du vent dominant.
PCT/ZA2015/050005 2015-08-20 2015-08-20 Dispositif électronique de mesure du vent WO2017031508A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/ZA2015/050005 WO2017031508A1 (fr) 2015-08-20 2015-08-20 Dispositif électronique de mesure du vent

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/ZA2015/050005 WO2017031508A1 (fr) 2015-08-20 2015-08-20 Dispositif électronique de mesure du vent

Publications (1)

Publication Number Publication Date
WO2017031508A1 true WO2017031508A1 (fr) 2017-02-23

Family

ID=58050871

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/ZA2015/050005 WO2017031508A1 (fr) 2015-08-20 2015-08-20 Dispositif électronique de mesure du vent

Country Status (1)

Country Link
WO (1) WO2017031508A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2578690A (en) * 2018-10-31 2020-05-20 Secr Defence Fluid flow measuring device, system and method
CN112485464A (zh) * 2020-11-25 2021-03-12 济南泰景电力技术有限公司 一种陀螺仪测风装置及风力、风向的测量方法

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS566111A (en) * 1979-06-28 1981-01-22 Shimadzu Corp Wind energy meter
FR2476322A1 (fr) * 1980-02-15 1981-08-21 Gueniot Xavier Anemometre
JPS61133865A (ja) * 1984-12-04 1986-06-21 Taisei Corp 簡易流向計
JPS6381271A (ja) * 1986-09-25 1988-04-12 Meisei Electric Co Ltd 風向・風速測定装置
WO2003031989A1 (fr) * 2001-10-10 2003-04-17 Francesco Ramaioli Capteur unique permettant de mesurer la vitesse du vent et la direction du vent sans elements mobiles
CN201589784U (zh) * 2009-10-27 2010-09-22 南京信息工程大学 并联式三维测风传感器
US20140260596A1 (en) * 2013-03-12 2014-09-18 Subsidence, Inc. Mechanical strain-based weather sensor

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS566111A (en) * 1979-06-28 1981-01-22 Shimadzu Corp Wind energy meter
FR2476322A1 (fr) * 1980-02-15 1981-08-21 Gueniot Xavier Anemometre
JPS61133865A (ja) * 1984-12-04 1986-06-21 Taisei Corp 簡易流向計
JPS6381271A (ja) * 1986-09-25 1988-04-12 Meisei Electric Co Ltd 風向・風速測定装置
WO2003031989A1 (fr) * 2001-10-10 2003-04-17 Francesco Ramaioli Capteur unique permettant de mesurer la vitesse du vent et la direction du vent sans elements mobiles
CN201589784U (zh) * 2009-10-27 2010-09-22 南京信息工程大学 并联式三维测风传感器
US20140260596A1 (en) * 2013-03-12 2014-09-18 Subsidence, Inc. Mechanical strain-based weather sensor

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2578690A (en) * 2018-10-31 2020-05-20 Secr Defence Fluid flow measuring device, system and method
GB2578690B (en) * 2018-10-31 2021-05-05 Secr Defence Fluid flow measuring device, system and method
US11761976B2 (en) 2018-10-31 2023-09-19 The Secretary Of State For Defence Fluid flow measuring device, system and method
CN112485464A (zh) * 2020-11-25 2021-03-12 济南泰景电力技术有限公司 一种陀螺仪测风装置及风力、风向的测量方法
CN112485464B (zh) * 2020-11-25 2023-10-27 济南泰景电力技术有限公司 一种陀螺仪测风装置及风力、风向的测量方法

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