Method and apparatus for wind speed and direction measurement
Apparatus for measuring fluid speed and direction is described comprising: a stationary housing; first and second members rotatably mounted on said stationary housing, for rotating coaxially and independently about said stationary housing; a self-contained source of stimulus, mounted on said first member to rotate about the stationary housing, wherein said self-contained source of stimulus is an element selected from the group consisting of a magnet, a light source and a radiation source; sensor means, responsive to said source of stimulus, mounted on the stationary housing, for providing an output signal indicating a threshold level of said stimulus; means, mounted on said second member, for varying the level of said stimulus which reaches said sensor to indicate the relative angular displacement between said first and second members; fluid speed transducer means, mounted on one of said first and second members, for rotating in a predetermined direction with an angular velocity proportional to the speed of the fluid; first circuit means including a means for sensing the rotation of said transducer means with respect to said stationary housing, for providing a first output signal indicating the speed of rotation of the fluid speed transducer means; fluid direction transducer means, mounted on another of said first and second members, for rotating to a position in which the fluid direction transducer means is parallel to the direction of flow of the fluid; second circuit means, responsive to the sensor means, for providing a second output signal indicating whether the detected stimulus exceeds the threshold level; and means for determining the direction of fluid flow from said first and second output signals.
- Assignee:
- Peet Bros. Co., Inc., West Allenhurst, NJ (United States)
- Patent Number(s):
- A; US 5231876
- Application Number:
- PPN: US 7-701795
- OSTI ID:
- 6459990
- Country of Publication:
- United States
- Language:
- English
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170100 -- Wind Energy-- Resources & Availability (Climatology)
440700* -- Geophysical & Meteorological Instrumentation-- (1990-)
47 OTHER INSTRUMENTATION
ANEMOMETERS
DATA ACQUISITION SYSTEMS
DESIGN
FLUID FLOW
GAS FLOW
MEASURING INSTRUMENTS
MOTION
OPERATION
RESOURCE ASSESSMENT
ROTATION
WIND