The method of making a weather vane is as follows:
1. First prepare a few pieces of cardboard, and then start rolling it from one corner into a paper stick. Then stick it with double-sided tape, cut off the top part, and roll the second piece of cardboard in the same way.
2. After completion, take the third piece of cardboard, fold it in half, use a pen to draw the shape that needs to be cut, and cut it. Once you've cut it out, glue it onto the white paper stick. Third, combine the two paper sticks so that the weather vane is ready.
A wind vane is an instrument used to determine the direction of the wind. A weather vane is an asymmetrically shaped object with its center of gravity fixed on a vertical axis. When the wind blows, the end that creates greater resistance to air flow will rotate with the wind, indicating the wind direction.
The metal weather vane consists of six parts: wind vane, wind wheel, tail fin, moving pole, main pole, and base. The main part is made of high-quality stainless steel; the fan blades are made of high-quality engineering plastics with strong corrosion resistance; the moving rod part is made of high-quality double stainless steel waterproof bearings, which have high sensitivity, low starting wind speed and durability.
Wind vanes are easy to install and transport, and are widely used in meteorological and chemical industries, mining areas, agricultural production, oil field exploration, wind power generation and other industries.
The transducer of the wind vane (wind speed sensor) is a code disk and a photoelectric component. When the wind vane rotates with the change of wind direction, the shaft drives the code disk to rotate in the gap of the photoelectric component, and the photoelectric signal generated corresponds to the Gray code output of the wind direction at that time. The transducer of the sensor can use a precision conductive plastic potentiometer to produce a changing voltage signal output at the active end of the potentiometer.