WO2010001058A2 - Methode de regeneration des cristaux liquides de systeme(s) electrocommandable(s) a diffusion lumineuse variable, alimentation electrique et dispositif pour ladite regeneration - Google Patents
Methode de regeneration des cristaux liquides de systeme(s) electrocommandable(s) a diffusion lumineuse variable, alimentation electrique et dispositif pour ladite regeneration Download PDFInfo
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- WO2010001058A2 WO2010001058A2 PCT/FR2009/051286 FR2009051286W WO2010001058A2 WO 2010001058 A2 WO2010001058 A2 WO 2010001058A2 FR 2009051286 W FR2009051286 W FR 2009051286W WO 2010001058 A2 WO2010001058 A2 WO 2010001058A2
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- Prior art keywords
- regeneration
- power supply
- electrically controllable
- data
- forced mode
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Classifications
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/13306—Circuit arrangements or driving methods for the control of single liquid crystal cells
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
Definitions
- the subject of the invention is a liquid crystal regeneration method of electrically controllable system (s) with variable light diffusion comprising a substrate carrying a liquid crystal element between two electrodes connected to a power supply, and said supply and the device for regeneration.
- glazing whose properties can be modulated.
- it is sought to control the degree of vision through glazing, in particular to reduce or even totally prevent it for a certain time.
- a glazing with variable light diffusion whose operating principle is known is a liquid crystal glazing. It is based on the use of a film placed between two conducting layers and based on a polymeric material in which droplets of liquid crystals, in particular nematic with positive dielectric anisotropy, are dispersed.
- the liquid crystals when the film is energized, are oriented along a preferred axis, which allows vision. When the crystals are not aligned, the film becomes diffused and prevents vision. Examples of such films are described in particular in European patents EP0238164 and US Pat. Nos. 3,443,504, 4,806,922 and 4,373,256.
- This type of film, once laminated and incorporated between two glass substrates, is marketed by the company SAINT-GOBAIN GLASS under the trade name Privalite.
- the present invention proposes for this purpose a liquid crystal regeneration method of an electrically controllable system for variable light diffusion comprising a substrate, in particular transparent, carrying a liquid crystal element between two electrodes connected to a power supply, this method comprises:
- the regeneration method according to the invention also offers an intelligent management of regeneration, to better target needs.
- the operating data, useful for regeneration, are of several types:
- temporal data the duration of use (s) extended (s), local time, - so-called contextual data reflecting the context of use, including the level of brightness ...
- the regeneration can be canceled if the duration DT1 is greater than or equal to 0.50DT or even 0.75DT.
- the forced mode request may include an estimated duration of use DTu in forced mode.
- the regeneration may be canceled if the sum of the last duration of use and the estimated duration of use in forced mode DTu is less than a limit value DTi, a value generally greater than DT.
- the use of the forced mode may preferably lead (automatically) a new setpoint, typically a new trigger of a regeneration as soon as possible, and even lead to a new DT which may be longer or, as the case may be, shorter.
- the regeneration can preferably be started as soon as the forced forced mode period (DT2 or DTu) has elapsed.
- the new setpoint can replace at least once the starting setpoint.
- the starting setpoint can be kept for the next regeneration (s).
- the regeneration time DT it is avoided to lower the regeneration time DT, in other words to exceed the maximum duration of use DT continuously.
- data on the context of use useful for the decision of the forced mode, one can quote the data coming from sensors: detection of light and / or of presence, and / or of movement.
- the operating frequency of the switch when the operating frequency of the switch is greater than or equal to a certain value, for example at 1/10 Hz, or even at 1 Hz translating a handling error or a problem at the switch,
- the regeneration range en route is defined as a priority, fixed, for example a usual range, predefined non-use of the system (night etc).
- the triggering of the cutoff can be immediate (as soon as the instructions reached or possibly planned, deferred).
- the circuit break can be done for example by the opening of a relay, for example electromechanical (coil type) or electronic (of the "solid state” type).
- a relay for example electromechanical (coil type) or electronic (of the "solid state” type).
- the cutoff is on the electronic circuit external to the box of the power supply, by so-called external means added for this purpose between the box of the power supply and the sector, typically an external relay.
- the programming for the regeneration can also be external by means added for this purpose between the box of the power supply and the sector, for example using a programmable clock or a programmable socket associated with an external relay.
- the cutoff is on the internal electronic circuit to the box of the power supply, typically by an internal relay.
- the set value C and / or the duration DT can be received by the power supply or stored or calculated by the power supply.
- the programming for the regeneration can be (at least partly) local, for example by simply adding so-called external means, between the sector and the box of the power supply or by so-called internal means, in the box of the power supply.
- the power supply can be completely autonomous in its regeneration management. It preferably comprises a digital processing unit (microprocessor (7), which calculates or uses the setpoint C and the (minimum) regeneration period DT and makes said comparison with the operating data.
- microprocessor digital processing unit
- One or the data for the regeneration can be fixed, for example registered during an initialization, or updated. For example, one can take into account the aging of the liquid crystal or even, in case of maintenance, the establishment of a new liquid crystal element including another type.
- At least one of the data for the regeneration can be sent, in particular updated, via a communication network.
- Local programming can also evolve, be updated via a communication network.
- the programming for the regeneration may be (at least partly) delocalized, remote from the electrically controllable system or even from the system location.
- the power supply can doc collect and send via a communication network information necessary for programming (at least partly) relocated. For example, she sends news for a new setpoint and / or new regeneration time in case of replacement of a liquid crystal element, or for a simple update of C, of DT.
- a cut-off control command for regeneration can be sent by a communication network, the power supply then simply processing this order.
- the communication management between the power supply and a communication server can be defined on a time basis in the case for example of a regular query, including daily, server and / or on a contextual basis, in case of breakdown for example. It is thus possible to provide a regular interrogation, of frequency chosen according to the regeneration cycle, for example daily, the server to know if the (last) scheduled regeneration was made and order a backup regeneration if necessary.
- the regeneration method relies on a communication network.
- the method can therefore provide the connection of the power supply to a communication network:
- connection may be punctual or preferably continuous for real-time data transmission.
- the communication network may preferably be bidirectional.
- the communication network may be more precisely: by dedicated wires such as the well-known "RS485" networks, LAN “LAN”, “CAN”, “IEB”, “LonWorks”, “BACnet” networks, for example described on the internet in Wikipedia, - by radio frequency,
- a CAN network is preferably used for reasons of cost and performance and, if necessary, to easily manage the intelligent regeneration of a plurality of electrically controllable liquid crystal systems.
- Each CAN bus implements a protocol of the same name (protocol
- CAN which is a serial communication protocol that supports real-time systems with a high level of reliability in a limited and harsh environment such as a factory, a workshop, a car ...
- the CAN protocol covers two of the seven layers of the ISO OSI Open Systems Interconnection Model, namely the physical layer (layer 1) and the data link layer (layer 2).
- layer 1 the physical layer
- layer 2 the data link layer
- ISO 11898 the ISO 11898
- the data link layer of the CAN protocol is such that each control unit can send and receive data.
- the data is conveyed on the bus in the form of packets (also called asynchronous frames or messages) of defined format but of variable and limited length.
- any control unit connected to the bus can issue a new packet.
- An interrupt mechanism for higher priority packets is provided, as well as a conflict arbitration mechanism resulting from the simultaneous transmission of multiple packets on the bus when it is free.
- the programming for the forced mode can be: - local and even more preferentially (in less part) internal to the food, and / or delocalized, remote from the electrically controllable system or from the system location.
- the power supply can in particular simply reflect the order of operation in forced mode, for example transmitted by a communication network, including that already described.
- the method can thus include sending a forced mode request by a communication network and / or by (direct) electrical connection with the power supply, in particular with internal local forced mode and regeneration programming.
- a forced mode can be provided during a regeneration period DT by one of the following operations:
- the user can therefore be the (only) requestor of the forced mode or the forced mode can, cumulatively or alternatively, be controlled remotely and managed by communication network.
- the method then provides for the connection of the power supply to a communication network for the control of the forced mode.
- a switch for example called a main switch
- another switch for example, emergency
- the user can consciously generate a forced mode request, when for example the method plans to indicate (automatically) the state of the system, eg sound indication, visual of the current regeneration range.
- the user can also generate a forced mode request without knowing it, not being informed of the current regeneration.
- forced mode control by manual control (actuation of an emergency switch, an emergency push button) and / or by automatic closing of a relay connected to the power supply (typical a relay external to the power supply box) and controlled by digital processing means connected to the communication network.
- the regeneration time DT and / or the cutoff setpoint C vary in particular according to the type of liquid crystal.
- a DT duration of a few hours, for example 4 hours, can be provided for a maximum operating time DT of 20 hours (in succession or in several times and without prolonged stops).
- daily regeneration is preferably provided (so as not to exceed 20 hours of operation), and preferably a single daily regeneration. More generally, the setpoint C can be established from different scenarios.
- the cut can be ordered:
- the maximum duration of use DT (in one or more times) can be measured locally by a counter, a clock, in particular in the box of the power supply, and / or by a server (with a counter or a centralized clock) connected regularly or permanently with the power supply via a communication network.
- the detection of the start time for the regeneration can be carried out by the power supply (by a clock or indirectly by a meter) and / or by information of a server connected regularly or permanently with the power supply via a communication network.
- the time slot can be fixed, registered during initialization or update (by a communication network), reprogrammable as already indicated.
- the regeneration is started during the night.
- the system is planned to be used at night, typically in a lighted room (room with projection screen, leisure spaces type casino etc.), or in a lighted place (sports equipment, swimming pool, boat dock .. .), it is possible to provide other regeneration ranges and / or other instructions.
- the cut can be controlled in the absence of presence and / or motion detected.
- a break can be provided in case of long enough vacancy of the place (including an enclosed space) including the electrically controllable system.
- a communication network by example a LAN, EIB ..
- a reservation server for meeting rooms, leisure areas, rooms, etc.
- a priority of the cut commands can also be pre-established: for example a cut by the network premium on a local cut, a cut by information given by sensor premium on a cut in a predefined time range.
- the normal regeneration time DT may be extended (by prolonging the automatic shutdown for energy saving purposes, preferably after verification (communication via a communication network, etc.). setpoint C and / or the duration DT as a function of the operating temperature of the electrically controllable system.
- a temperature sensor is added at the system level (in the system or on the substrate), a sensor connected to the power supply and / or to a communication network.
- the method may include the storage of the data for the regeneration to be performed and / or the regeneration carried out and possibly the forced mode, in particular the storage:
- the storage is in the box of the power supply, even more preferably in a microcontroller, and is permanent.
- the memory can be resettable, however.
- the invention also relates to a method for regenerating liquid crystals of a plurality of electrically controllable variable light scattering systems, each comprising a substrate carrying a liquid crystal element between two electrodes connected to a power supply, the method incorporating the regeneration method as defined above, which includes for each of the power supplies: the establishment of data for the regeneration comprising a regeneration period DT and at least one regeneration setpoint C, a programming for the regeneration comprising the comparison of operating data with the regeneration setpoint C,
- the method comprises for the communication of data for the regeneration (s) to be carried out, and / or on the regeneration (s) carried out, the connection of the power supplies to the same communication network.
- the set point and / or the regeneration time can be: - individual (that is to say element by element),
- triggering of a collective regeneration can be from a common (shared) command signal transmitted via a bidirectional communication network and processed by the power supplies.
- the addressing of the power supplies (individual addressing, group 7) is provided to target the recipients and / or transmitters of the data.
- the invention finally relates to a power supply of an electrically controllable variable light scattering system provided with a substrate carrying a liquid crystal element between first and second electrodes comprising, for the implementation of the regeneration method defined above:
- a first processing unit for programming, the unit being able to receive or calculate the instruction
- a processing unit for programming the forced mode, the unit being able to receive a forced mode request, or even the forced mode command, a relay (internal, in the power supply box) or a connection to a forced mode; relay (external to the power supply box), for regeneration shutdown and for forced mode.
- the power supply comprises a microcontroller (preferably internal, in the power supply box) comprising:
- microprocessor forming the processing unit for regeneration and forced mode programming
- a counter or a clock for the establishment and / or the respect of the set point C and / or the duration DT and / or for the recording of data on the regeneration carried out
- a non-volatile memory for storing the setpoint C and / or the duration DT, and / or data on the regeneration carried out
- At least one digital-analog output delivering an analog cut-off signal for the regeneration or a forced mode-making signal during the regeneration, (or even of normal operation).
- the microcontroller may further comprise at least one analog-digital input and be connected (electrically) to a sensor, preferably light (phototransistor, photovoltaic cell, etc.) or temperature, transmitting data as already indicated.
- a sensor preferably light (phototransistor, photovoltaic cell, etc.) or temperature, transmitting data as already indicated.
- the sensor can be in the system, at the place of the system, or relocated, connected to the communication network.
- the microcontroller can be replaced by discrete digital and / or analog elements.
- the power supply may further include:
- a communication network preferably bidirectional, in series, in particular CAN
- an indicator of regeneration, forced mode for example:
- red LED light regeneration mode
- green light forced or normal
- the invention also relates to a device for the regeneration of liquid crystals of at least one electrically controllable variable light diffusion system provided with a substrate carrying a liquid crystal element between first and second electrodes, the device comprising:
- At least one power supply as defined above connected to a communication network
- the main switch possibly connected to the communication network by a processing unit, in particular a digital unit, of the microcontroller type, and operable by the user for normal operation or a forced mode request in the event of a cut for the regeneration,
- a processing unit in particular of the microcontroller type, and operable by the user for a forced mode control in the event of a cutoff for the regeneration
- the invention can thus use a bidirectional communication network, such as those already described, for managing the liquid crystal regeneration of a number N greater than or equal to 1 of electrically controllable system (s) with variable diffusion. It can thus manage electrically controllable systems in one or more buildings, in a house, a room, or in a land vehicle, air or sea.
- the main switch can be dedicated to a single power supply, or even to a group of power supplies (common management of forced mode request and / or normal operation).
- For an electrically controllable system it is for example to switch on the normal operating mode and for another electrically controllable system, to request a forced mode during the regeneration.
- the emergency switch can be dedicated to a single power supply, or even to a group of power supplies (common management of the forced mode command), for example to control a defined group of electrically controllable systems (in the same place, and / or in the same context of use ).
- the device for regeneration may include at least one sensor, in particular light and / or presence and / or temperature, electrically connected to the power supply, for example via an analog-digital input of a microcontroller.
- the device may include (for each power supply) an indicator of regeneration and / or forced mode, for example via an analog-digital input of a microcontroller.
- the device may include at least one sensor, including light and / or presence and / or temperature, connected to the communication network by a processing unit, the sensor or sensors may be common to several power supplies.
- the device may include (for each power supply) an indicator of regeneration and / or forced mode, connected to the communication network by a processing unit.
- liquid crystal elements can be regenerated. We can actually use all the liquid crystal elements known as "NCAP” (Nematic Curvilinearly Aligned Phases in English) or "PDLC” (Polymer Dispersed Liquid Crystal in English) or “CLC” (Cholesteric Liquid Crystal in English) . These may further contain dichroic dyes, especially in solution in the liquid crystal droplets. It is then possible to modulate the light scattering and the light absorption of the systems.
- NCAP Nematic Curvilinearly Aligned Phases in English
- PDLC Polymer Dispersed Liquid Crystal in English
- CLC Chargesteric Liquid Crystal in English
- cholesteric liquid crystal-based gels containing a small amount of crosslinked polymer such as those described in patent WO92 / 19695.
- the elements are more usually in the form of a polymer film, the polymer containing droplets containing liquid crystals. To ensure its power supply, it is usually available between two electroconductive layers, including transparent.
- the polymer film with its two conductive layers is usually provided on at least one of its faces, and preferably each of them, a carrier substrate.
- This one is usually transparent. It can be chosen rigid or semi-rigid, for example be made of glass, acrylic polymer of the polymethyl methacrylate PMMA type or polycarbonate PC. It can also be flexible, especially polyethylene terephthalate PET or some flexible polycarbonates.
- the electrically liquid crystal glazing is a laminated glazing comprising a first rigid substrate, in particular a glass, a second substrate, especially against glass, and the active system between two lamination interleaves (PVB, EVA or PU type organic polymer layer).
- Any other adhesive means can be provided between the two substrates to be joined, in particular a glue or adhesive by pressure, of types derived from acrylate.
- the system according to the invention described above can advantageously be mounted in single glazing (nevertheless laminated) and / or in multiple glazing with blade (s) of intermediate gas (s).
- These Privalite glazings are used as internal partitions between two rooms, in a building, or between two compartments, in a means of locomotion of the train or airplane type.
- a laundry in a water room (separate or part of a room or any other room), a laundry, a laundry, in a bathroom, a shower, as a shower enclosure, especially as floor, wall, partition, door (possibly sliding), front window or interior window,
- FIG. 1 shows a diagram of a device for the regeneration of liquid crystals of an electrically controllable system with variable light diffusion in a first embodiment of the invention
- FIG. 2 shows a diagram of a device for the regeneration of the liquid crystals of an electrically controllable system with variable light diffusion in a second embodiment of the invention
- FIG. 3 shows a diagram of a device for the regeneration of the liquid crystals of an electrically controllable system with variable light diffusion in a third embodiment of the invention.
- the active system consists of a transparent polymer film in which microdroplets of a nematic liquid crystal, which constitutes the liquid crystal emulsion with a total thickness of 25 ⁇ m, have been dispersed beforehand. sandwiched between the two sheets of polyethylene terephthalate (PET) 175 ⁇ m thick, each coated with a transparent conductive ITO layer of resistance per square equal to 75 ohms per square.
- the liquid crystal molecules have several indices of refraction: two equal indices in both directions perpendicular to their axis of symmetry and an index n in the axis of symmetry.
- the polymer is chosen to have a refractive index very close to the ordinary index no.
- the axes of the different drops are not correlated with each other.
- the incident light therefore undergoes, at each polymer-drop interface, a high refraction due to the difference in index between the polymer and the drop whose orientation is random.
- the light is diffused in all directions.
- the optical axes of the different drops are aligned in the direction of the electric field, ie perpendicular to the glazing.
- the incident light essentially normal to the glazing, sees only a medium of continuous index np equal to no and is no longer scattered.
- the intermediate blur states are accessible at the desired speed with voltage values included between 0 and Uo. This is done using a dimmer ("dimmer" in English).
- FIG. 1 illustrates a device 1000 for the regeneration of liquid crystals of a variable light diffusion glazing type Privalite 100 as detailed above (liquid crystal film 3 between two glasses 4, 5 provided with electrodes 1, 2) in a first embodiment of the invention.
- This device 1000 includes a power supply capable of supplying electrical energy to the glazing and also contributing to the regeneration of the liquid crystals.
- the power supply comprises: a microcontroller 20 (MCU for "Micro Controller Unit” in English, for example the M16C of Mitsubishi),
- a first relay formed of a coil 6 and a contactor 7 opening or closing controlled by the microcontroller 20.
- the microcontroller 20 and the relay 6, 7 are in a power supply box (not shown).
- the first relay 6, 7 is connected to the input terminal 1a of the first electrode 1.
- the relay is external to the housing.
- microcontroller 20 contains:
- a microprocessor 21 for programming the regeneration, once the set point C has been reached, for example 2Oh of use (s), and to control the duration of the regeneration DT, typically 4h, a counter 22 for calculating the hours of operation and / or respecting the setpoint C and / or the duration DT,
- nonvolatile data memory 23 typically a FLASH type memory, for storing data for the regeneration to be performed: (DT, setpoint C, etc.), and on the regeneration or regenerations carried out,
- the microprocessor 21 consults the memory 23 for the setpoint C and the duration DT and consults as often as necessary the counter 22 for example to determine the timing of the regeneration cutoff. It compares the value "hour" given by the counter to the time setpoint C.
- the microprocessor 21 controls at the output 24 the delivery of an analog command signal Sc of the actuator, triggering the opening of the contactor 7 (as shown by the arrow in the opposite direction of the hands of the a watch) for the duration DT.
- the counter 22 is also used to record the effective regeneration duration engaged, and to signal the end of the regeneration.
- a main switch 30, which can be activated by the user, is connected to the microcontroller 20. It is for example an electronic switch 30 connected to a digital input 26 of the microcontroller 20.
- the user By closing the main switch 30, the user sends a request for normal operation or a forced mode request if a regeneration is in progress, request processed by the microcontroller 20,21.
- the microcontroller 20, 21 accepts (generally) the normal operation request (except possible electrical incidents) in which case, the relay 6.7 is in the on position (current flow).
- the microcontroller 20,21 evaluates the forced mode request and, in case of acceptance, interrupts the regeneration by controlling the relay is in the on position (current flow).
- An emergency switch 6 ' which can be activated by the user, is also connected to the microcontroller 20. It is for example an electronic switch connected to a digital input 25 of the microcontroller 20.
- the user By closing the emergency switch 6 ', the user sends a forced mode command if a regeneration is in progress, command received and accepted by the microcontroller 20.
- the microcontroller 20 which interrupts the regeneration by controlling the relay is in position walk (current flow).
- the regeneration in progress can be signaled to the user by means of a diode (red for example), or a display, or a loudspeaker, connected to an additional digital-analog output of the microcontroller (elements not shown).
- the forced mode in progress can be signaled to the user by means of a diode (red, for example), or a display, or a speaker connected to an additional input of the microcontroller (not shown).
- a diode red, for example
- a display or a speaker connected to an additional input of the microcontroller (not shown).
- the use of the forced mode may preferably lead to a new setpoint possibly with a new regeneration period calculated by the microprocessor 21.
- the new setpoint replaces at least once the starting setpoint.
- the starting setpoint can be kept for future regenerations.
- Counter 22 is also used to count the duration of forced mode.
- the memory 23 also records the temporal and contextual data relating to the use of the forced mode.
- the power supply is connected to the sector 200 delivering a voltage of 220V (or 110V) at 50Hz (or 60Hz).
- the secondary winding 42 makes it possible to lower, if necessary, the effective (maximum) voltage to be delivered to the system 100 and can be used to forming an inductive voltage divider 10 by connecting an intermediate contact point to the ground for electrical safety of the user.
- the transformer 40, the fuse 31, the voltage divider 10 are preferably also in the housing incorporating the microcontroller 20 and the relay 6.7.
- FIG. 2 illustrates a power supply device 2000 for a variable light diffusion glazing type Privalite 100 that differs from the feed device 1000 by the elements described hereinafter.
- the counter is replaced by a clock 22 'to indicate the start and end times of regeneration, or forced mode or even normal operation.
- the microcontroller further comprises an interface 25 'with a bidirectional communication network CAN.
- the regeneration in progress or programmed can be signaled to a server 300 connected to the central communication network 300 connected to the CAN network by an Si signal.
- the microprocessor 21 can request the central server 300 connected to the CAN network start times and end and return these data in the memory 23.
- the microprocessor may request either the central server 300 connected (in real time) to the network or to a computer connected punctually, to validate the current setpoint C and / or the duration DT, or request / receive an update of these data.
- the set point C and / or the duration DT can be transmitted to the microprocessor 21 by the CAN communication network via the interface 25 '.
- the microprocessor 21 can finally receive via the network, via the interface 25 ', useful data to calculate itself. even the setpoint C and / or the duration DT, for example from abacuses or correspondence tables.
- the server 300 or the computer connected punctually can read or even repatriate the data stored in the memory via the interface 25 '.
- the forced mode in progress can also be signaled to the server 300 connected to the communication network.
- the emergency switch 6 ' is further replaced by another forced mode control means comprising a microcontroller 20' connected to the communication network and controlling a second relay 6 ", 7" in parallel with the first relay 6, 7.
- these means 20 ', 6 ", 7" reinforce the manual emergency switch. These means are used for example in case of electronic failure, control failure of the emergency switch 6 '.
- the microcontroller 20 ' controls the forced mode for example when it receives these fault information by the server 300 or by the microcontroller 20.
- the "external" microcontroller 20 ' may be similar to the "internal" microcontroller 20, or simpler (without memory and / or counter or clock ”).
- the forced mode request (or command) can be sent by the server 300 the microcontroller 20 'and / or the microcontroller 20.
- the server 300 holds reservation information for a space containing the system (rooms, meeting room, medical rooms for surgical or aesthetic operations, etc.) involving a functioning of the system and the server 300 then requests stopping of regeneration in progress.
- a space containing the system rooms, meeting room, medical rooms for surgical or aesthetic operations, etc.
- the use of the forced mode may preferably lead to a new set of instructions communicated by the server 300 (according to a new schedule of reservation and availability of a room, stoppage of operations ).
- the regeneration can be triggered once a contextual reference has been completed and not a set time.
- the device 1000 comprises for example a light sensor 50, phototransistor for example, connected to an analog-digital input 24 'of the microcontroller 20 internal to transmit an information on natural or artificial light.
- the regeneration can be planned as soon as night falls.
- Regeneration can also be triggered if several instructions are reached including:
- FIG. 3 illustrates a power supply device 3000 of a variable light diffusion glazing type Privalite 100 that differs from the second power supply device 2000 by the elements described hereinafter.
- the main switch connected to the internal microcontroller 20 is replaced by the main "networked" switch 30, connected to a microcontroller 20 'which is connected to the communication network and which communicates with the microcontroller 20.
- the forced mode control means is replaced by a "network” emergency switch 6 "connected to a microcontroller 20" connected to the communication network and which communicates with the microcontroller 20.
- a device for regenerating liquid crystals of a plurality of liquid crystal glazings each comprising a device as described in FIGS. 1 to 3 and using the CAN communication network for exchanging data for the regeneration performed. or to perform, or in the forced mode or even sharing sensor data (for example by a sensor common to several systems and preferably network).
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- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Optics & Photonics (AREA)
- Mathematical Physics (AREA)
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Automation & Control Theory (AREA)
- Liquid Crystal (AREA)
- Lasers (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2009801258272A CN102084285A (zh) | 2008-07-04 | 2009-07-02 | 用于再生可变光散射电控制系统的液晶的方法、用于所述再生的电源和设备 |
US13/002,433 US20110187984A1 (en) | 2008-07-04 | 2009-07-02 | Method for regenerating the liquid crystals of variable light-scattering electrically controlled systems, electrical power supply and device for said regeneration |
JP2011515574A JP2011526701A (ja) | 2008-07-04 | 2009-07-02 | 可変の光散乱が電気的に制御されるシステムに係る液晶の再生方法、その再生のための電源及び装置 |
EP09772740A EP2297605A2 (fr) | 2008-07-04 | 2009-07-02 | Methode de regeneration des cristaux liquides de systeme(s) electrocommandable(s) a diffusion lumineuse variable, alimentation electrique et dispositif pour ladite regeneration |
EA201170141A EA201170141A1 (ru) | 2008-07-04 | 2009-07-02 | Способ регенерации жидких кристаллов электроуправляемой(ых) системы (систем) с переменным рассеянием света, схема электрического питания и устройство регенерации |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0854587 | 2008-07-04 | ||
FR0854587A FR2933506B1 (fr) | 2008-07-04 | 2008-07-04 | Methode de regeneration des cristaux liquides de systeme(s) electrocommandable(s) a diffusion lumineuse variable, alimentation electrique et dispositif pour ladite regeneration |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2010001058A2 true WO2010001058A2 (fr) | 2010-01-07 |
WO2010001058A3 WO2010001058A3 (fr) | 2010-04-01 |
Family
ID=40363526
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR2009/051286 WO2010001058A2 (fr) | 2008-07-04 | 2009-07-02 | Methode de regeneration des cristaux liquides de systeme(s) electrocommandable(s) a diffusion lumineuse variable, alimentation electrique et dispositif pour ladite regeneration |
Country Status (8)
Country | Link |
---|---|
US (1) | US20110187984A1 (fr) |
EP (1) | EP2297605A2 (fr) |
JP (1) | JP2011526701A (fr) |
KR (1) | KR20110027832A (fr) |
CN (1) | CN102084285A (fr) |
EA (1) | EA201170141A1 (fr) |
FR (1) | FR2933506B1 (fr) |
WO (1) | WO2010001058A2 (fr) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20050087403A1 (en) * | 2003-09-10 | 2005-04-28 | Dieter Mehr | Wall plate with glass part for an elevator installation, and elevator installation with such a wall part |
US20060290691A1 (en) * | 2005-05-27 | 2006-12-28 | Asahi Glass Company Limited | Display device and information display system |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0923754A1 (fr) * | 1996-08-20 | 1999-06-23 | Donnelly Corporation | Ensemble fenetre muni d'une transmission optique regulable |
FR2827397B1 (fr) * | 2001-07-12 | 2003-09-19 | Saint Gobain | Dispositif electrocommandable a proprietes optiques variables ou systeme holographique, thermotrope ou a particules en suspension |
JP2006343444A (ja) * | 2005-06-08 | 2006-12-21 | Kowa Real Estate Co Ltd | プロジェクターによる投影システム |
-
2008
- 2008-07-04 FR FR0854587A patent/FR2933506B1/fr not_active Expired - Fee Related
-
2009
- 2009-07-02 JP JP2011515574A patent/JP2011526701A/ja active Pending
- 2009-07-02 WO PCT/FR2009/051286 patent/WO2010001058A2/fr active Application Filing
- 2009-07-02 US US13/002,433 patent/US20110187984A1/en not_active Abandoned
- 2009-07-02 CN CN2009801258272A patent/CN102084285A/zh active Pending
- 2009-07-02 KR KR1020117002658A patent/KR20110027832A/ko not_active Application Discontinuation
- 2009-07-02 EP EP09772740A patent/EP2297605A2/fr not_active Withdrawn
- 2009-07-02 EA EA201170141A patent/EA201170141A1/ru unknown
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20050087403A1 (en) * | 2003-09-10 | 2005-04-28 | Dieter Mehr | Wall plate with glass part for an elevator installation, and elevator installation with such a wall part |
US20060290691A1 (en) * | 2005-05-27 | 2006-12-28 | Asahi Glass Company Limited | Display device and information display system |
Also Published As
Publication number | Publication date |
---|---|
EP2297605A2 (fr) | 2011-03-23 |
KR20110027832A (ko) | 2011-03-16 |
FR2933506A1 (fr) | 2010-01-08 |
JP2011526701A (ja) | 2011-10-13 |
WO2010001058A3 (fr) | 2010-04-01 |
CN102084285A (zh) | 2011-06-01 |
FR2933506B1 (fr) | 2012-06-29 |
EA201170141A1 (ru) | 2011-08-30 |
US20110187984A1 (en) | 2011-08-04 |
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