Ultrasonic sensing and control apparatus
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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-
May 24, 1983
Grant Date -
N/A
app pub date -
May 4, 1981
filing date -
May 4, 1981
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A stock loop controller is disclosed which measures the round trip time of an ultrasonic signal transmitted to the stock loop and its return echo to generate a digital signal proportional to such time. The digital signal is converted to an analog signal and compared with a voltage reference across an amplifier. The resultant difference signal is used to control a motor operating the stock loop 'take-up' or 'feed-out' mechanism.
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Cited Art Landscape
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