BETRIEBSSICHERER BEHINDERUNGSDETEKTOR FÜR TÜRÖFFNER

The light beam in an obstruction detector is coded into packets of pulses by a transmitter. When the light beam is received, the receiver recovers the code signal and supplies it to a code detection circuit. To detect the code, the circuit supplies the code signal and a delayed version of the code s...

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Bibliographic Details
Main Author WAGGAMON, DENNIS W
Format Patent
LanguageGerman
Published 15.11.1996
Edition6
Subjects
CHECKS FOR WINGS
CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION
DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL
ELECTRICITY
EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
FIXED CONSTRUCTIONS
FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES,FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS,BLINDS, GATES
GENERATION
KEYS
LADDERS
LOCKS
SAFES
WINDOW OR DOOR FITTINGS
WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THEFUNCTIONING OF THE WING
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Summary:The light beam in an obstruction detector is coded into packets of pulses by a transmitter. When the light beam is received, the receiver recovers the code signal and supplies it to a code detection circuit. To detect the code, the circuit supplies the code signal and a delayed version of the code signal to an "exclusive or" gate. If the code is present, the gate produces a pulsed output resulting in a "safe" signal being sent to a door opener control circuit. If no code is present, the gate produces a relatively constant output resulting in an "unsafe" signal being sent to the door opener circuit. The "unsafe" signal is produced not only in response to obstructions, but also, in response to errors and malfunctions in the wiring to the transmitter and receiver and in the transmitter and receiver themselves.
Bibliography:Application Number: AT19920400458T