WO2013153475A1 - Commande distribuée en boucle fermée de la lumière naturelle et artificielle - Google Patents

Commande distribuée en boucle fermée de la lumière naturelle et artificielle Download PDF

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Publication number
WO2013153475A1
WO2013153475A1 PCT/IB2013/052482 IB2013052482W WO2013153475A1 WO 2013153475 A1 WO2013153475 A1 WO 2013153475A1 IB 2013052482 W IB2013052482 W IB 2013052482W WO 2013153475 A1 WO2013153475 A1 WO 2013153475A1
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WO
WIPO (PCT)
Prior art keywords
point
luminance level
space
value
external
Prior art date
Application number
PCT/IB2013/052482
Other languages
English (en)
Inventor
Dagnachew Birru
Original Assignee
Koninklijke Philips N.V.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Koninklijke Philips N.V. filed Critical Koninklijke Philips N.V.
Publication of WO2013153475A1 publication Critical patent/WO2013153475A1/fr

Links

Classifications

    • 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
    • E06B9/26—Lamellar or like blinds, e.g. venetian blinds
    • E06B9/28—Lamellar or like blinds, e.g. venetian blinds with horizontal lamellae, e.g. non-liftable
    • E06B9/30—Lamellar or like blinds, e.g. venetian blinds with horizontal lamellae, e.g. non-liftable liftable
    • E06B9/32—Operating, guiding, or securing devices therefor
    • E06B9/322—Details of operating devices, e.g. pulleys, brakes, spring drums, drives
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
    • H05B47/10—Controlling the light source
    • H05B47/105—Controlling the light source in response to determined parameters
    • H05B47/11—Controlling the light source in response to determined parameters by determining the brightness or colour temperature of ambient light
    • 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
    • E06B9/56—Operating, guiding or securing devices or arrangements for roll-type closures; Spring drums; Tape drums; Counterweighting arrangements therefor
    • E06B9/68—Operating devices or mechanisms, e.g. with electric drive
    • E06B2009/6809—Control
    • E06B2009/6818—Control using sensors
    • E06B2009/6827—Control using sensors sensing light
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A30/00—Adapting or protecting infrastructure or their operation
    • Y02A30/24—Structural elements or technologies for improving thermal insulation
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
    • Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B80/00—Architectural or constructional elements improving the thermal performance of buildings

Definitions

  • This invention relates to lighting controls, and more particularly, to a method and a system for controlling light distribution in a space including installed light sources and an external light source.
  • an automated system for window treatments for controlling the amount of daylight in the room have been recently developed.
  • Such systems usually operate using open loop controls based on a form of a solar clock, the model of the building, its surroundings, and so on.
  • an automated system for window treatments is an open-loop system with certain assumptions about the interior and exterior environment. These assumptions are often not necessarily correct or updated when surrounding conditions are changed.
  • An improved solution is a closed-loop window treatment control system that adjusts the blind height and the slats' angles based on interior lighting conditions.
  • Such a controller is a newly designed and manufactured system that combines the functionality of both of the closed-loop systems mentioned above. However, this requires closed-loop systems with centralized operation or with integrated controllers.
  • Certain embodiments disclosed herein include a distributed closed-loop lighting control system.
  • the system comprises at least one sensor for measuring a light luminance level in a space; an indoor lighting controller connected to the at least one sensor for controlling an intensity of one or more internal light sources to meet a first set-point for the measured light luminance level in the space; an external lighting source controller for adjusting an amount of external light entering into the space to meet a second set-point for the measured light luminance level in the space, wherein the external lighting source controller operates independently of the indoor lighting controller and wherein a value of the second set-point is higher than a value of the first set-point.
  • Certain embodiments disclosed herein also include a distributed closed-loop lighting control system.
  • the system comprises at least one sensor for measuring a light luminance level in a space; an indoor lighting controller connected to the at least one sensor for controlling an intensity of one or more internal light sources to meet a first set-point for the measured light luminance level in the space; and an external lighting source controller connected to the at least one sensor for adjusting an amount of external light entering into the space to meet a second set-point for the measured light luminance level in the space, wherein the external lighting source controller operates independently of the indoor lighting controller and wherein a value of the second set- point is higher than a value of the first set-point.
  • Figure 1 is a schematic diagram of a distributed closed-loop control system according to one embodiment.
  • Figure 2 is a schematic diagram of a distributed closed-loop control system according to another embodiment.
  • Figure 3 is a flowchart describing a process for distributed closed-loop control of indoor and external light sources according to one embodiment.
  • Figure 4 is a flowchart describing a process for adjusting the amount of external light entering a space according to an embodiment.
  • a distributed closed-loop control system for efficiently controlling the amount of light from indoor sources and daylight (external lighting) in a space is disclosed according to certain embodiments of the invention.
  • the system is based on a closed- loop window treatment controller and a closed-loop indoor lighting controller that operate interdentally, but exchange information between each other. This information includes at least the measured luminance level at the interior space.
  • the distributed closed-loop system allows meeting a setpoint defined by a user while providing optimal performance. In accordance with an embodiment, the optimal performance is achieved when the power savings and exposure to daylight are maximized.
  • Fig. 1 shows a non-limiting schematic diagram of the distributed closed-loop control system 100 according to one embodiment.
  • the system 100 includes an indoor lighting controller 1 10 and an external lighting source controller 120.
  • the controller 1 10 controls the intensity of the internal light sources (e.g., electric lights) 1 1 1 using a closed-loop mechanism.
  • the controller 120 controls the window treatments 121 to adjust the amount of external light entering into the space also a using a closed-loop mechanism.
  • the controller 120 can change the slats' angle and height of motorized binds installed in a window.
  • the external light may be daylight or a light illuminated from any other external source.
  • the system 100 also includes one or more sensors 130 that measure the light luminance level (designated as s(k)) in the space.
  • the one or more sensors 130 may be distributed in different areas within the space (e.g., a room).
  • the light in the space may result from an external light source (daylight) coming through window treatments 121 and the internal light sources 1 1 1 .
  • the light luminance level, s(k) may be a vector; each element of the vector is the measured level at a certain area.
  • the functionality of the indoor lighting controller 1 10 can be integrated in the one or more sensors 130.
  • the measured light luminance level, s(k) is provided to both controllers 1 10 and 120, such that the adjustment of the internal and external light sources is based on the same measured value.
  • the value s(k) is communicated by means of an electric signal which may also be transferred over a cable or a wireless medium.
  • the indoor lighting controller 1 10 computes the difference between the measured luminance level s(k) and the required luminance level, set-point 101 , selected by a user for the internal light sources 1 1 1 .
  • the external lighting source controller 120 computes the difference between the measured luminance level s(k) and the required luminance level, set-point 102, for the external light source.
  • the setpoint 102 is always greater than the setpoint 101 by a delta value.
  • the delta value is greater than any hysteresis in the indoor lighting controller 1 10.
  • the setpoint 101 may be 500 lux
  • the setpoint 102 may be 600 lux.
  • the setpoint 101 may be selected using an interface 140.
  • the interface 140 sets that setpoint 102 to be greater than setpoint 101 by adding a delta value.
  • the user may select the setpoint 102 as well.
  • the interface 140 may be a computer interface, for example, a tablet computer, a
  • the computer interface provides a graphical user interface (GUI) through which the user can select his/her lighting preferences in the space, such as more daylight than indoor light, warm lighting versus bright lighting, and so on.
  • GUI graphical user interface
  • the GUI selects the values for setpoints 101 and 102 accordingly.
  • the interface 140 may be any mechanical means, e.g., a wall side switch.
  • the space would be lit mostly using the external light source. Specifically, the controller 1 10 will converge to the setpoint 101 quicker than the controller 120. However, once the controller 1 10 stops adjusting the intensity levels of the electric lights 1 1 1 , the external lighting source controller 120 continues its operation to meet the higher setpoint 102. Thus, the controller 120 attempts to provide more daylight by opening the slat angles or increasing the blind height of the window treatments 121 . As a result, the indoor lighting controller 1 10 lowers the luminance level of the electric lights 1 1 1 , as more light is detected by sensors 130. Thus, electrical lights 1 1 1 are dimmed, relative to their initial levels, resulting in energy savings. This process continues until the controller 120 meets setpoint 102.
  • the system 100 includes a glare sensor 150 that operates as an open-loop system.
  • the sensor 150 detects if glare exists, for example, from an external light source, and if so, the slats' angles and/or the blind height of the window treatments 121 are adjusted to mitigate the glare.
  • the slat angles and/or the blind height of the window treatments 121 are constraints to the controller 120.
  • Fig. 2 illustrates another embodiment of a distributed closed-loop control system 200.
  • the system 200 includes an indoor lighting controller 210, an external lighting source controller 220, and one or more sensors 230.
  • the system 200 includes a glare control sensor 250 to mitigate glare.
  • the functionality of the indoor lighting controller 210 can be integrated in the one or more sensors 230.
  • the controller 210 controls the intensity of the internal light sources (e.g., electric lights) 21 1 using a closed-loop mechanism.
  • the controller 220 controls the window treatments 221 to adjust the amount of external light entering into the space, by also using a closed-loop mechanism.
  • the one or more sensors 230 measure the light luminance level (designated as s(k)) in the space.
  • the one or more sensors 230 may be distributed in different areas within the space (e.g., a room).
  • connection 205 between the indoor lighting controller 210 and the external lighting source controller 220, which may be a wired or wireless connection.
  • the measured light luminance level, s(k) and a modified setpoint 202 are sent from the controller 210 to controller 220.
  • the controller 210 receives a setpoint 201 selected for the electric lights 21 1 and generates the setpoint 202 by including a delta value.
  • the delta value should be greater than any hysteresis in the indoor lighting controller 210.
  • the setpoint 201 is selected through an interface 240 that may be a computer interface or a mechanical interface.
  • the controllers 210 and 220 independently adjust the lights 21 1 and window treatments 221 to meet the setpoints 201 and 202 respectively. This is performed using the process described in depth above and also with reference to Fig. 3.
  • Fig. 3 shows an exemplary and non-limiting flowchart 300 describing a process for distributed closed-loop control of interior and external light sources according to an embodiment described herein.
  • the process can be performed by any of the systems 100 and 200 described above.
  • a first setpoint (SP1 ) selected for the indoor lights, and a second setpoint (SP2) selected for the external light are input.
  • the luminance level defined in the second setpoint is higher than the first setpoint.
  • Both setpoints may be entered by a user.
  • the first setpoint is set by the user and the second setpoint is set by the interface (e.g., an interface 140) and/or the indoor lighting controller (e.g., controller 210).
  • the luminance level of light from the light sources is measured by sensors at one or more measuring areas within the space.
  • the measured luminance level, s(k) is provided as an input to both an indoor lighting controller and an external lighting source controller.
  • an absolute (Abs) value of a difference between the measured luminance level, s(k), and the second setpoint, SP2 is greater than a predefined threshold, of. If so, execution continues to S335; otherwise, execution returns to S320.
  • the threshold, d is a hysteresis value set to avoid oscillation and may be defined by the user or be a configurable value.
  • the external lighting source controller adjusts the blinds' height and/or slats' angles to meet the second setpoint. In one embodiment, this is performed using an iterative process described with reference to Fig. 4.
  • the indoor lighting controller adjusts the intensities of the indoor lights to meet the first setpoint. This includes dimming and un-dimming the intensities of indoor lights until the first setpoint is met.
  • the predefined waiting time interval may be set by the user.
  • the process 300 may be periodically repeated. The process may also be triggered when the measured luminance level is changed below or above a certain predefined threshold. It should also be noted that when the second set- point cannot be met, for example, at sunset, at night, or when glare exists, the process 300 will be performed only to meet the first setpoint set for the indoor lights. In such a case, the external lighting controller is constrained by the predefined setpoints determined by the user or the glare sensor.
  • Fig. 4 shows an exemplary and non-limiting flowchart S330 describing a process for adjusting the amount of external light entering a space according to an embodiment disclosed herein.
  • the process can be performed by an external lighting source controller (e.g., controller 120 or 220 described above) that controls motorized window blinds installed in a window or windows.
  • an external lighting source controller e.g., controller 120 or 220 described above
  • S410 it is checked if glare exists based on an input provided by a glare sensor (e.g., sensor 150 or 250). If so, at S420, the blinds' heights and/or slats' angles are adjusted until the glare sensor indicates that the glare is below a threshold level. It should be noted that S410 is optional and performed in systems that include an open loop glare control system. Furthermore, in an embodiment an input from the glare sensor may cause control to return to S410 regardless of the state of the process.
  • a glare sensor e.g., sensor 150 or 250.
  • S410 results with a 'No' answer, execution continues with S425, where the slats' angles of the window treatments are adjusted to their maximum open angle.
  • the maximum open angle is defined, for example, by the manufacture of the window treatments.
  • it is checked if there is more light than desired in the space. That is, if the measured luminance level, s(k), is higher than a value of the second setpoint. If so, at S440 the blinds' slats are closed at a predefined angle. This angle may be the smallest angle that the blinds' slats can be changed in their closed position.
  • S440 may also include adjusting the position of the window treatments to enable less light to enter through the window. For example, the position of the window treatments can be adjusted by lowering the height of the window treatments (blinds or shades) covering the window at a predefined height or shifting the window treatments covering the window to one side to cover more area of the window.
  • S450 it is checked if the there is less light than desired in the space, i.e., if the measured luminance level, s(k), is lower than a value of the second setpoint. In addition, it is checked if the slats' angle is smaller than an angle that can cause glare conditions. If both checks result with an 'Yes' answer, execution proceeds to S460, where the blinds' slats are opened at a predefined angle. This angle may be the smallest angle to which the blinds' slats can be changed in their open position. In an embodiment, S460 may also include adjusting the position of the window treatments to enable more light to enter through the window. For example, the position of the window treatments can be adjusted by raising the height of the window treatments (blinds or shades) covering the window at a predefined height or shifting the window treatments covering the window to one side to cover less area of the window.
  • the various embodiments disclosed herein can be implemented as hardware, firmware, software or any combination thereof.
  • the software is preferably implemented as an application program tangibly embodied on a program storage unit, a non-transitory computer readable medium, or a non-transitory machine-readable storage medium that can be in a form of a digital circuit, an analogy circuit, a magnetic medium, or combination thereof.
  • the application program may be uploaded to, and executed by, a machine comprising any suitable architecture.
  • the machine is implemented on a computer platform having hardware such as one or more central processing units (“CPUs"), a memory, and input/output interfaces.
  • CPUs central processing units
  • the computer platform may also include an operating system and microinstruction code.

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  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Circuit Arrangement For Electric Light Sources In General (AREA)

Abstract

Cette invention concerne un système de commande d'éclairage distribuée en boucle fermée (200). Ledit système comprend : au moins un capteur (230) de mesure d'un niveau de luminance lumineuse dans l'espace ; un contrôleur d'éclairage intérieur (210) relié audit/auxdits capteur(s) pour commander une intensité d'une ou plusieurs sources d'éclairage intérieures (211) de façon à ce qu'elle corresponde à un premier point prédéterminé pour le niveau de luminance lumineuse mesurée dans l'espace ; un contrôleur d'éclairage extérieur (220) conçu pour réguler la quantité de lumière extérieure pénétrant dans l'espace de façon à ce qu'elle corresponde à un second point prédéterminé pour le niveau de luminance lumineuse mesurée dans l'espace. Ledit contrôleur d'éclairage extérieur fonctionne indépendamment du contrôleur d'éclairage intérieur et une valeur du second point prédéterminé est supérieure à une valeur du premier point prédéterminé.
PCT/IB2013/052482 2012-04-10 2013-03-28 Commande distribuée en boucle fermée de la lumière naturelle et artificielle WO2013153475A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201261622116P 2012-04-10 2012-04-10
US61/622,116 2012-04-10

Publications (1)

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WO2013153475A1 true WO2013153475A1 (fr) 2013-10-17

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017066715A (ja) * 2015-09-30 2017-04-06 清水建設株式会社 日射調節システム及び日射調節方法
US20170223802A1 (en) * 2016-02-03 2017-08-03 Honeywell International Inc. Camera-aided controller of illumination
US9791836B2 (en) 2015-08-21 2017-10-17 International Business Machines Corporation Television system including glare detection and remedial action system
US11587322B2 (en) 2016-12-09 2023-02-21 Lutron Technology Company Llc Load control system having a visible light sensor

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050110416A1 (en) * 2003-03-24 2005-05-26 Lutron Electronics Co., Inc. System to control daylight and artificial illumination and sun glare in a space
WO2011098945A1 (fr) * 2010-02-11 2011-08-18 Koninklijke Philips Electronics N.V. Contrôle du niveau lumineux pour l'éclairage de bâtiments

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050110416A1 (en) * 2003-03-24 2005-05-26 Lutron Electronics Co., Inc. System to control daylight and artificial illumination and sun glare in a space
WO2011098945A1 (fr) * 2010-02-11 2011-08-18 Koninklijke Philips Electronics N.V. Contrôle du niveau lumineux pour l'éclairage de bâtiments

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9791836B2 (en) 2015-08-21 2017-10-17 International Business Machines Corporation Television system including glare detection and remedial action system
JP2017066715A (ja) * 2015-09-30 2017-04-06 清水建設株式会社 日射調節システム及び日射調節方法
US20170223802A1 (en) * 2016-02-03 2017-08-03 Honeywell International Inc. Camera-aided controller of illumination
US11587322B2 (en) 2016-12-09 2023-02-21 Lutron Technology Company Llc Load control system having a visible light sensor

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