Development of a measurement box to measure the 3D wind speed in an urban environment

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Date
2010Author
Version
Acceso abierto / Sarbide irekia
Type
Proyecto Fin de Carrera / Ikasketen Amaierako Proiektua
Impact
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nodoi-noplumx
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Abstract
The present work aims to build a low-cost three-dimensional anemometer to
measure the wind speed and direction in an urban environment.
To begin with, some research on basic principles in scientific literature and also in
patent database was done.
Secondly, a market study was carried out and two propeller anemometers were
purchased. A hi-tech ultrasonic sensor was also purchased to gather ac ...
[++]
The present work aims to build a low-cost three-dimensional anemometer to
measure the wind speed and direction in an urban environment.
To begin with, some research on basic principles in scientific literature and also in
patent database was done.
Secondly, a market study was carried out and two propeller anemometers were
purchased. A hi-tech ultrasonic sensor was also purchased to gather accurate
measurements and to serve as input for the calibration of the low-cost anemometer.
The propeller anemometers were then calibrated in a wind tunnel and some
unexpected measuring errors became visible. Their accuracy was not as high as it had
been anticipated in the datasheets. This resulted in a collaboration with the manufacturers
to test and improve their products. Some more tests were carried out and concluded with
great results.
Then, the three-dimensional sensor was assembled using the two propeller
anemometers and it was subsequently cross-checked with an ultrasonic anemometer in a
roof of the Erasmushogeschool Brussel.
Finally, a program was created to collect the data from the ultrasonic sensor and
store the information in a file.
To sum up, this project meets all the desired goals: it works autonomously, collects
the data, and is movable. In addition, some other technical statements were concluded: at
low wind speeds, the propeller anemometers also had a low resolution and measurements
corresponding to the horizontal plane were more accurate than those for the vertical
component of the wind.
One of the most significant results of this project is the fact that this work allowed
helping the manufacturers to improve the propeller anemometers; their accuracy was
reduced by more than 5%. In addition, the development of a program to log the wind
speed data from the ultrasonic anemometer eliminated the need for an expensive data
logger. [--]
Subject
Anemómetros tridimensionales,
Velocidad del viento,
Entornos urbanos,
Three-dimensional anemometers,
Wind speed,
Entornos urbanos
Departament
Universidad Pública de Navarra. Departamento de Ingeniería Eléctrica y Electrónica /
Nafarroako Unibertsitate Publikoa. Ingeniaritza Elektrikoa eta Elektronikoa Saila
Degree
Ingeniería Industrial /
Industria Ingeniaritza