EP2743442B1 - Automatischer Rollladen für Dachfenster und ein Verfahren zur Steuerung davon - Google Patents

Automatischer Rollladen für Dachfenster und ein Verfahren zur Steuerung davon Download PDF

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Publication number
EP2743442B1
EP2743442B1 EP12008299.5A EP12008299A EP2743442B1 EP 2743442 B1 EP2743442 B1 EP 2743442B1 EP 12008299 A EP12008299 A EP 12008299A EP 2743442 B1 EP2743442 B1 EP 2743442B1
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EP
European Patent Office
Prior art keywords
working mode
curtain
microcontroller
automatic
rechargeable battery
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Revoked
Application number
EP12008299.5A
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English (en)
French (fr)
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EP2743442A1 (de
Inventor
Ryszard Florek
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Fakro PP Sp zoo
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Fakro PP Sp zoo
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    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
    • E06B9/24—Screens or other constructions affording protection against light, especially against sunshine; Similar screens for privacy or appearance; Slat blinds
    • E06B9/40—Roller blinds
    • E06B9/42—Parts or details of roller blinds, e.g. suspension devices, blind boxes
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
    • E06B9/24—Screens or other constructions affording protection against light, especially against sunshine; Similar screens for privacy or appearance; Slat blinds
    • E06B2009/2476—Solar cells

Definitions

  • the present invention relates to an automatic roller blind, in particular for roof windows, comprising a curtain, a motor driving the curtain, a rechargeable battery to store energy required to operate the motor, a photovoltaic panel charging said rechargeable battery and a microcontroller to control operation of the blind in response to control signals including at least a control signal representing a sunlight level.
  • the invention also relates to a method of controlling such an automatic roller blind.
  • the blind may be employed to control the heat transfer between the inside and outside of the building.
  • the blind may cover the window during daytime to prevent room overheating.
  • roller blind installed over the roof window is capable of lowering temperature inside the room up to 7 °C as compared to the same room with a roof window devoid of the blind.
  • the blind may uncover the window during daytime to allow the sunlight to warm the inside of the building or contrarily cover the window if there is no sunlight to improve thermal isolation coefficient of the window.
  • Automatic roller blinds of this kind may also be employed to improve the comfort of the inhabitants, for example by uncovering the window at the morning while sun exposition increases in order to allow access of the sunlight to room, by covering the window at the sunset to improve intimacy of inhabitants, etc.
  • Automatic roller blinds known from the state of art employ sensors providing sunlight level signals that are usually energized from an external power sources. Furthermore in case of a rechargeable battery discharge and a sunlight level insufficient for recharging the battery to a minimal voltage level enabling for operating a motor driving a curtain, the functionality of automatic positioning of the curtain disappears instantly usually at a random position of the curtain what in certain situations may be disadvantageous or at least inaesthetic.
  • DE 196 20 619 A1 , DE 10 2007 006911 A1 , FR 2 935 425 A3 , US 2009/254222 A1 and GB 2 462 753 A describe automatic roller blinds or shades. Therefore there is a need to provide an automatic roller blind that would be virtually and fully autonomous, i.e. capable of continuous automatic operation for a relatively long period of time without an auxiliary power supply or frequent battery recharge sessions.
  • the invention provides an automatic roller blind as described in the outset, which is characterised in that, said control signal representing the sunlight level is an output electrical power of the photovoltaic panel and the microcontroller controls the operation of the blind also on the basis of the output voltage of said rechargeable battery.
  • the photovoltaic panel serves not only to charge the battery of the blind but most importantly to control its operation. Furthermore it is now possible to differentiate the working mode of the blind on the basis of the available power supply.
  • the photovoltaic panel In order to measure the output electrical power of the photovoltaic panel it may be dissipated into a reference resistor and determined in a simple manner by a measurement of a voltage drop induced on the reference resistor by the current produced by the panel.
  • said microcontroller works in at least two working modes including a manual working mode, where automatic control of a blind is disabled, and an automatic working mode, where position of the curtain is set as often as necessary in response to said control signals, wherein the microcontroller works in said automatic working mode if the output voltage of said rechargeable battery is higher than a predefined automatic working mode voltage threshold.
  • said working modes further include a semi-automatic working mode, where position of the curtain is maintained after it is set.
  • the microcontroller may work in the semi-automatic working mode, for example, if the output voltage of said rechargeable battery is higher than a predefined semi-automatic working mode voltage threshold and lower than said predefined automatic working mode voltage threshold.
  • roller blind according to the invention additionally comprises a module providing user control signal for the microcontroller.
  • Said switch/indicator module may also indicate the working mode of the blind and preferably comprises low battery voltage indicator which is turned on if the output voltage of said rechargeable battery is lower than said predefined manual working mode voltage threshold.
  • the indicator informs the user that battery recharge is required which may takes place after e.g. in during a winter after prolonged period of low sunlight level and the blind working in said automatic working mode.
  • the blind additionally comprises at least one component providing additional control signal for the microcontroller chosen among: outside temperature sensor, curtain state sensor, timer, and inside temperature sensor.
  • said microcontroller may be a part of a larger home automation system.
  • the invention also provides a method of controlling an automatic roller blind as described in the outset that involves the steps of:
  • a roller blind 1 shown partially in Fig. 1 comprises a case 11, 12 attached to two side guides 13 (shown in part) connected with a cross beam 14.
  • a curtain 15 is slidably disposed in elongated channels of side guides 13 and rolled over a shaft 16 rotationally disposed inside the case 11, 12 and driven by a drive system including an electric motor 2.
  • Fig. 1 shows a digital outside temperature sensor 3 (thermometer) and a photovoltaic panel 4.
  • position of the curtain 15 is determined by measuring the current energizing the motor 2.
  • the blind 1 may obviously comprise an electromechanical sensor or a sensor integrated with a motor 2. This and other options are known to those skilled in the art.
  • the blind further comprises a schematically illustrated rechargeable 12 Volt battery 6 and a schematically illustrated microcontroller 7 comprising a working mode (manual, semi-automatic and automatic) switch/indicator module 8, an internal timer 9 and a control logic 10.
  • a working mode manual, semi-automatic and automatic
  • the microcontroller 7 may be wirelessly connected or may have a form of an element of a larger home automation system including all possible particular software implementations thereof or may be implemented as an integrated electronic control unit (ECU) along with the switch/indicator module 8, and the control logic 10.
  • ECU integrated electronice control unit
  • connections of the functional elements of the blind 1 with the control logic 10 are depicted with arrows, wherein directions of arrows also indicate directions of current or signal transfer, so that for example the battery 6 not only supplies the power required for operation of the microcontroller 7 and the motor 2 but is also charged by the photovoltaic panel 4 in a manner controlled by the control logic 10.
  • FIG. 3 schematically illustrates an exemplary arrangement of interconnections between particular functional components of the roller blind 1 according to the present invention.
  • a two position switch 17 is installed on a supply line led out from the schematically shown photovoltaic panel 4, wherein the rechargeable battery 6 is connected to the first output contact of the switch 17 and a reference resistor 18 is connected to the second output contact of the switch 17.
  • a first output current measuring arrangement 19 is installed on the line connecting the switch 17 with the resistor 18 and measures current supplied to the resistor 18 from the panel 4.
  • the position of the switch 17 is controlled by the microcontroller 7 or more precisely by the control logic 10 of the microcontroller 7.
  • the control logic 10 periodically probes a value of the photovoltaic panel 4 output power via the current measuring arrangement 19, turning the switch 17 into state in which it connects the photovoltaic panel 4 with the resistor 18. Therefore the output signals of the output current measuring arrangement 18, representing directly an output current generated by the panel 4 and determined on the basis of a measurement of a voltage drop on the resistor 18, indirectly represent an output electrical power of the photovoltaic panel 4 dissipated into the resistor 18.
  • the normal default position of the switch 17 is the position in which the switch 17 connects the photovoltaic panel 4 with the rechargeable battery 6.
  • the switch may be any arbitrary known switch in particular an electronic key switch.
  • An output voltage measuring arrangement 20 and a second output current measuring arrangement 21 are installed on the output supply line of the rechargeable battery 6 connecting the battery 6 with the electric motor 2.
  • the output signal of the output voltage measuring arrangement 20 represents the battery 6 output voltage and is used for choosing between semi-automatic and automatic working modes as described below. In a preferred embodiment said output voltage may be a no-load output voltage of the battery 6.
  • the output signal of the second output current measuring arrangement 21 represents the battery 6 output current which is drawn by the motor 2 and which may be used by the control logic 10 to determine the position (open, closed or intermediate) of the curtain 15.
  • the roller blind 1 may work autonomously, if only the sunlight during a daytime enables the photovoltaic panel 4 to maintain a sufficient charge of the battery 6.
  • the blind 1 operates in one of three independent working modes: manual, semi-automatic and automatic.
  • Given working mode is set by the user if only the battery voltage enables to choose this mode.
  • the switch/indicator module 8 shown in Fig. 2 is provided with schematically illustrated switches 81 to set the given mode and indicators 82 displaying the current working mode along with a low battery indicator.
  • Indicators 82 may be implemented as Light-emitting diodes (LED), Liquid Crystal Display(s) (LCD), or various others.
  • switches 81 (and 83c) may be independent units, regions of a LCD touch-screen, or various others known to those skilled in the art.
  • a manual working mode voltage threshold (a first voltage threshold) set to e.g. 11.1 Volt
  • a semi-automatic working mode voltage threshold (a second voltage threshold) set to e.g. 11.8 Volt
  • an automatic working mode voltage threshold (a third voltage threshold) set to e.g. 12.3 Volt.
  • low battery indicator 82d is on and all switches 81 are disabled.
  • user is required to recharge the battery 6 from an auxiliary source to increase its voltage at least above the first voltage threshold.
  • the blind operates in manual working mode i.e.
  • the blind may operate in manual or semi-automatic working mode i.e. only switches 81b and 81 c are enabled and indicator 82b or 82c signals the working mode chosen by the user using the switch 81b or 81c.
  • the blind may operate in any chosen working mode so that all switches 81 are enabled. In a situation depicted in Fig. 2 the blind 1 operates in the automatic working mode.
  • microcontroller 7 utilizes the following control signals:
  • Predefined thresholds may be stored within microcontroller 7 memory and correspond to the control signals: sunlight threshold (SLTHR, e.g. 70% of output electrical power rating of the photovoltaic panel 4) corresponding to the sunlight level, dawn/dusk sunlight threshold (DDSLTHR, e.g. 4% of output electrical power rating of the photovoltaic panel 4) to indicate the day (measured sunlight level above DDSLTHR) or night (measured sunlight level below DDSLTHR), temperature threshold (TPTHR, e.g. 5 °C) to distinguish between winter- and summertime functionality (as explained below), etc. All these thresholds may be user set or hardwired in the microcontroller 7 or control logic 10 memory.
  • STHR sunlight threshold
  • DDSLTHR dawn/dusk sunlight threshold
  • TPTHR e.g. 5 °C
  • the shutter may also utilize time thresholds, such as a dawn threshold (e.g. 6 AM) to indicate the sunrise time and a dusk threshold (e.g. 8 PM) to indicate the sunset time.
  • Time thresholds in turn may obviously also depend on the day of the year e.g. to correspond to sunrise and sunset times in a given day, so that they may be set differently in May than in December.
  • the motor 2 may be activated to open or close the curtain 15 only by user using the switch 83c.
  • the microcontroller 7 controls the motor 2 to set or maintain the curtain 15 in the opened position if all the following conditions simultaneously hold true:
  • microcontroller 7 controls the motor 2 to set or maintain the curtain 15 in the closed position if all the following conditions simultaneously holds true:
  • the opened (or closed) position of the curtain 15 shall not be changed once it has been set, providing the outside temperature remains below (or above) the season of the year temperature threshold TPTHR. Battery 6 power consumption is thus substantially limited.
  • the microcontroller 7 controls the motor 2 to set or maintain the curtain 15 in the opened position if all the following conditions simultaneously hold true:
  • microcontroller 7 controls the motor 2 to set or maintain the curtain 15 in the closed position if all the following conditions simultaneously hold true:
  • the opened or closed position of the curtain 15 is changed by the microcontroller 7 as often as necessary to reflect the changes in measured sunlight or time.
  • time delays e.g. 3 min

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  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Operating, Guiding And Securing Of Roll- Type Closing Members (AREA)

Claims (11)

  1. Automatischer Rollladen (1), insbesondere Dachfensterrollladen mit dem Vorhang (15), dem Motor (2), der den Vorhang (15) bewegt, der wieder aufladbaren Batterie (6) für die Speicherung der für die Versorgung des Motors (2) notwendigen Energie, dem Photovoltaik-Modul (4), das die wieder aufladbare Batterie (6) lädt und dem Mikrocontroller (7) für die Steuerung der Funktion des Rollladens in Antwort auf die Steuersignale, dadurch gekennzeichnet, dass mindestens ein Steuersignal das Niveau der Sonneneinstrahlung darstellt, das die Ausgangsleistung des Photovoltaik-Moduls (4) ist sowie ein Steuersignal die Ausgangsspannung der wieder aufladbaren Batterie (6) darstellt und der Mikrocontroller (7) in mindestens zwei Betriebsarten arbeitet, die folgendes umfassen:
    manuelle Betriebsart (8c), bei der die automatische Steuerung des Rollladens ausgeschaltet ist, wobei der Mikrocontroller (7) in dieser manuellen Betriebsart (8c) erst dann arbeitet, wenn die Ausgangsspannung der wieder aufladbaren Batterie (6) höher als die vordefinierte Spannung der manuellen Betriebsart ist; und
    automatische Betriebsart (8a), bei der die Stellung des Vorhangs (15) so oft geregelt wird, wie es in Antwort auf die genannten Steuersignale notwendig ist, wobei der Mikrocontroller (7) in dieser automatischen Betriebsart (8a) erst dann arbeitet, wenn die Ausgangsspannung der wieder aufladbaren Batterie (6) höher als die vordefinierte Spannung der automatischen Betriebsart ist.
  2. Rollladen nach Anspruch 1, dadurch gekennzeichnet, dass die genannten Betriebsarten die halbautomatische Betriebsart (8b) umfassen, in der die Stellung des Vorhangs (15) nach dessen Einstellung erhalten bleibt, wobei der Mikrocontroller (7) in dieser halbautomatischen Betriebsart (8b) arbeitet, wenn die Ausgangsspannung der wieder aufladbaren Batterie (6) höher als die vordefinierte Spannung der halbautomatischen Betriebsart ist.
  3. Rollladen nach Anspruch 1 oder 2, dadurch gekennzeichnet dass er zusätzlich das Modul (8) enthält, das die Steuersignale des Nutzers an den Mikrocontroller (7) weitergibt.
  4. Rollladen nach Anspruch 3, dadurch gekennzeichnet, dass das genannte Modul (8) die Betriebsart des Rollladens anzeigt.
  5. Rollladen nach Anspruch 4, dadurch gekennzeichnet, dass das genannte Modul des Schalters des Anzeigegerätes (8) die Anzeige der Niederspannung der Batterie (6) enthält, die dann eingeschaltet ist, wenn die Ausgangsspannung der wieder aufladbaren Batterie (6) niedriger als die genannte vordefinierte Spannung der manuellen Betriebsart ist.
  6. Rollladen nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass er zusätzlich mindestens eine Komponente enthält, die das Steuersignal für den Mikrocontroller (7), ausgewählt aus den Signalen: des Außentemperatursensors (3), des Zustandssensors (5) des Vorhangs (15), des Zeitgebers (9) und des Innentemperatursensors liefert.
  7. Rollladen nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet , der genannte Mikrocontroller (7) ein Teil des Systems der Gebäudeautomatik ist.
  8. Art und Weise der Steuerung des automatischen Rollladens (1), insbesondere des Dachfensterrollladens, mit dem Vorhang (15), dem Motor (2), der den Vorhang (15) bewegt, der wieder aufladbaren Batterie (6) für die Speicherung der für die Versorgung des Motors (2) notwendigen Energie, dem Photovoltaik-Modul (4), das die wieder aufladbare Batterie (6) lädt und dem Mikrocontroller (7) für die Steuerung der Funktion des Rollladens in Antwort auf die Steuersignale, die zumindest das Steuersignal, das das Niveau der Sonneneinstrahlung darstellt, umfassen, dadurch gekennzeichnet, dass sie zwei Phasen umfasst:
    Messung der Ausgangsspannung des Photovoltaik-Moduls (4) als das genannte Steuersignal, das das Niveau der Sonneneinstrahlung darstellt, Messung der Ausgangsspannung der wieder aufladbaren Batterie (6), und
    Steuerung der Stellung des Vorhangs (15) unter Anwendung des Mikrocontrollers (7) in mindestens zwei Betriebsarten: in der manuellen Betriebsart (8c), in der die automatische Steuerung des Rollladens ausgeschaltet ist, wobei diese manuelle Betriebsart (8c) eingestellt ist, wenn die Ausgangsspannung der wieder aufladbaren Batterie (6) höher als die vordefinierte Spannung der manuellen Betriebsart ist; sowie in der automatischen Betriebsart (8a), in der die Stellung des Vorhangs (15) so oft geregelt wird, wie es in Antwort auf die genannten Steuersignale notwendig ist,
    wobei diese automatische Betriebsart (8a) eingestellt ist, wenn die Ausgangsspannung der wieder aufladbaren Batterie (6) höher als die vordefinierte Spannung der automatischen Betriebsart ist.
  9. Art und Weise nach Anspruch 8, dadurch gekennzeichnet, dass die Phase der Steuerung der Stellung des Vorhangs (15) unter Anwendung des Mikrocontrollers (7) auch in der zusätzlichen halbautomatischen Betriebsart (8b) realisiert wird, in der die Stellung des Vorhangs (15) erhalten bleibt, wobei diese halbautomatische Betriebsart (8b) erst dann eingestellt ist, wenn die Ausgangsspannung der wieder aufladbaren Batterie (6) höher als die vordefinierte Spannung der halbautomatischen Betriebsart ist.
  10. Art und Weise nach Anspruch 8 oder 9, dadurch gekennzeichnet, dass der Eingang des Nutzers als Steuersignal in der Phase der Steuerung der Stellung des Vorhangs (15) unter Anwendung des Mikrocontrollers (7) verwendet wird.
  11. Art und Weise nach Anspruch 8 oder 9 oder 10, dadurch gekennzeichnet, dass die zusätzlichen Steuersignale, ausgewählt aus den Signalen: der Außentemperatur, des Zustands des Vorhangs (15) und der Innentemperatur; in der Phase der Steuerung der Stellung des Vorhangs (15) unter Anwendung des Mikrocontrollers (7) verwendet werden.
EP12008299.5A 2012-12-12 2012-12-12 Automatischer Rollladen für Dachfenster und ein Verfahren zur Steuerung davon Revoked EP2743442B1 (de)

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EP12008299.5A EP2743442B1 (de) 2012-12-12 2012-12-12 Automatischer Rollladen für Dachfenster und ein Verfahren zur Steuerung davon

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EP12008299.5A EP2743442B1 (de) 2012-12-12 2012-12-12 Automatischer Rollladen für Dachfenster und ein Verfahren zur Steuerung davon

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EP2743442A1 EP2743442A1 (de) 2014-06-18
EP2743442B1 true EP2743442B1 (de) 2016-04-27

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WO2022159917A1 (en) * 2021-01-20 2022-07-28 Hunter Douglas Inc. System and method to indicate status of photovoltaic cell for battery of electrically operated window shading

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US10104997B2 (en) 2015-10-02 2018-10-23 Axis Labs Inc. External motor drive system for window covering system with continuous cord loop
US10863846B2 (en) 2015-10-02 2020-12-15 Axis Labs Inc. External motor drive system for window covering system with continuous cord loop
US10560050B2 (en) * 2018-06-15 2020-02-11 Evolusun, Inc. Innovative energy generating photovoltaic awning
US11840886B2 (en) 2021-05-12 2023-12-12 Ryse Inc. External motor drive system adjusting for creep in window covering system with continuous cord loop
CN115012800A (zh) * 2022-04-12 2022-09-06 江苏科技大学 一种吸音降尘的多功能智能防窥卷帘装置及其控制方法

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US20100089388A1 (en) 2007-03-03 2010-04-15 Bruce Stanley Gunton Aperture closure apparatus
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022159917A1 (en) * 2021-01-20 2022-07-28 Hunter Douglas Inc. System and method to indicate status of photovoltaic cell for battery of electrically operated window shading

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