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A shutter control apparatus, including: a tunable filter arrangement, having a tunable passband, configured to filter a signal derived at least in part from an electric motor, wherein the electric motor is for driving a moveable shutter and the signal comprises pulses that have a variable frequency and are derived from operation of a commutator of the electric motor; and control circuitry configured to: determine at least one electrical parameter associated with the electric motor; set the tunable passband based, at least in part, on the at least one electrical parameter; determine pulses in the signal passing through the tunable filter arrangement; and determine a position of the moveable shutter based on the determined pulses.
A shutter control apparatus, including: a tunable filter arrangement, having a tunable passband, configured to filter a signal derived at least in part from an electric motor, wherein the electric motor is for driving a moveable shutter and the signal comprises pulses that have a variable frequency and are derived from operation of a commutator of the electric motor; and control circuitry configured to: determine at least one electrical parameter associated with the electric motor; set the tunable passband based, at least in part, on the at least one electrical parameter; determine pulses in the signal passing through the tunable filter arrangement; and determine a position of the moveable shutter based on the determined pulses.
SHUTTER CONTROL
GUNTON BRUCE STANLEY (author)
2018-06-28
Patent
Electronic Resource
English
IPC:
E06B
Feste oder bewegliche Abschlüsse für Öffnungen in Bauwerken, Fahrzeugen, Zäunen oder ähnlichen Einfriedungen allgemein, z.B. Türen, Fenster, Läden, Tore
,
FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES, OR LIKE ENCLOSURES, IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
/
H03H
IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS
,
Scheinwiderstandsnetzwerke, z.B. Resonanzkreise
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