| Technical details | |
| Producer: | Vaavud ApS (DK) |
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Pošalji poruku
| Technical details | |
| Producer: | Vaavud ApS (DK) |
The world's first handheld device to measure both wind speed and direction. iPhone & Android. Crowdsourced live map, history and more!
Wind is an important factor for a wide range of activities, but the greatest places in the great outdoors are far away from any weather station. In order to give you precise and sharable wind readings on the spot, Vaavud has created the first wind meter and launched it here on Kickstarter. People loved it!
The Vaavud wind meter V 2.0 is using an optical sensor that measures 40.000 times per second, so it can detect even the slightest variation in rotation speed. By making the rotor of the wind meter slightly asymmetrical it get it to accelerate a bit when the largest part is hit by the wind. The Vaavud wind meter can then compare the point with the highest speed to the compass direction and derive the wind direction. At the same time, data from the highly accurate sensor can be used to derive the average rotation speed and thereby the wind speed.
The graph below shows the change in velocity during one full rotation for one of Vaavud's prototypes. For this one the difference in speed is a bit more than 3%, and the maximum speed is reached at about 45 degrees from start.
The new device will work with the popular Vaavud app, which features the world's first real-time graph on a handheld wind meter; a global live map; your personal measurement history and much more to come.
Vaavud wind meter V 2.0 will retail for $60, and will become available November 2014.
Photo: Vaavud
