Shutter control system

Details Shutter control system Shutter control system

1984-04-16

1986-11-11

Wan, Gene

Radiant energy

Photocells; circuits and apparatus

Photocell controls its own optical systems

126425, G01J 120, F24J 238

Patent

active

046224700

ABSTRACT:
A skylight shutter is driven by a battery-powered d.c. motor through transistor switches operated by Schmitt triggers. A sun sensor circuit generates a first shutter control signal so the shutter tracks the sun and passes maximum light. A room sensor circuit generates a second control signal which overrides the first control signal to reduce the room light to a desired selected level. A night sensor circuit overrides the first and second control signals for closing the shutters to minimize radiation losses during the night.

REFERENCES:
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patent: 4314546 (1982-02-01), Miller
patent: 4334521 (1982-06-01), Jacoby
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patent: 4396831 (1983-08-01), Yamada et al.
patent: 4435920 (1984-03-01), Osaka et al.
"Solar Energy", John I. B. Wilson, The Wykeham Science Series, Wykeham Publications, Ltd., 1979.
"Fundamentals of Solar Heating", (Published in English by the U.S. Department of Energy), Japanese translation enclosed.
"Fundamentals and Applications of Solar Energy", Prepared by Society of Solar Energy of Japan, 1978.

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