WIND_SPEED

Published:2009/7/8 5:21:00 Author:May | From:SeekIC

Developed to give magnitude of wind velocity over wide range of values when its two measured vectors are' expressed as voltages. Output is in Iogarithmig form for easy adaptation to data processorg. N-S and E-W veetor voltages from straitgage sensors ate converted to normalized values \/X and VYwhich are squared by MC1495L four-quadrant transconductance multipliers. Output currents are then summgct, and HA2705 opamp is used as differential current-to-voltage converterto obtain Vss as sum-of-squares ofVX and VY. Range covered is 1-100 mph. Article covers operation of circuit in detail.-J. A. Connolly and M.B.Lundberg.Analog Multipliers Determine True Wind Speed, EDN Magazine, April 20, 1974, p 69-72.



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