초록 ▼

An anemometer utilizing a radionuclide counting technique for measuring both the velocity and the direction of wind. A pendulum 12 consisting of a wire 13 and a ball 14 with a source of radiation 15 on the lower surface of the ball is positioned by the wind. Detectors 16, 17 and 18 are located in a

An anemometer utilizing a radionuclide counting technique for measuring both the velocity and the direction of wind. A pendulum 12 consisting of a wire 13 and a ball 14 with a source of radiation 15 on the lower surface of the ball is positioned by the wind. Detectors 16, 17 and 18 are located in a plane perpendicular to pendulum 13 (no wind). The detectors are located on the circumference of a circle and are equidistant from each other as well as the undisturbed (no wind) source ball position. The ratio of the outputs of detectors 16 and 17, and the ratio of the outputs of detectors 17 and 18 are applied to a processor 23 to select from the data stored in the processor the wind velocity V and the wind direction f10) the pendulum consists of a wire 27, a heavy ball 24, a string 28 and a lighter ball 25 with radiation sources on the lower surfaces of both balls.

대표청구항 ▼

A method for measuring wind velocity and direction comprising the steps of: providing a radiation source on the end of a pendulum with the pendulum being substantially perpendicular to the wind direction when in its no wind position and with the pendulum moving the radiation source to a position ind

A method for measuring wind velocity and direction comprising the steps of: providing a radiation source on the end of a pendulum with the pendulum being substantially perpendicular to the wind direction when in its no wind position and with the pendulum moving the radiation source to a position indicative of both the velocity and direction of the wind when there is wind; measuring the radiation from the radiation source at three equally spaced locations on a circle in a plane perpendicular to said pendulum in its stable position; obtaining two ratios of the three measurements of the radiation from the radiation source; and determining from the two ratios the velocity and direction of the wind.