Method for controlling a motorized drive device for a shading device of a closure, shading or solar protection installation.
The control method for motorized drive devices in shading systems adjusts screen permeability based on temperature and light intensity, addressing the integration challenge and enhancing thermal and visual comfort in buildings.
Patent Information
- Authority / Receiving Office
- FR · FR
- Patent Type
- Applications
- Current Assignee / Owner
- SOMFY ACTIVITES SA
- Filing Date
- 2024-12-23
- Publication Date
- 2026-06-26
AI Technical Summary
Existing shading devices with variable solar permeability screens lack effective control methods for integrating them into buildings to optimize thermal and visual comfort based on environmental conditions.
A control method for motorized drive devices that adjusts the permeability of retractable screens based on temperature and light intensity, using a mapping rule to define permeability values, which can be concave or convex, and allows for user intervention or rule modification.
Enhances the integration of variable solar permeability screens in buildings by optimizing thermal and visual comfort through dynamic adjustment of screen permeability based on environmental conditions.
Smart Images
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Abstract
Description
Title of the invention: Method for controlling a motorized drive device for a blackout device of a closure, blackout or solar protection installation.
[0001] The present invention relates to a method for controlling a motorized drive device for a shading device in a shutter, blind, or sun protection system comprising a retractable screen, the motorized drive device comprising an electromechanical actuator. The invention further relates to a drive device operating according to such a control method. The invention also relates to a computer program product comprising program code instructions recorded on a computer-readable medium for implementing the steps of such a control method. Finally, the invention relates to a data storage medium on which a computer program comprising program code instructions for implementing such a control method is recorded.
[0002] In general, the present invention relates to the field of shading devices comprising a motorized drive device that moves a retractable screen between at least a first position and at least a second position. These devices are used in closure, shading, or solar protection installations.
[0003] A motorized drive device includes an electromechanical actuator for a screen. The screen is made of a stretchable material that allows more or less light to filter through depending on the deformation applied to it. The material can be a fabric made by interlacing warp and weft yarns. Varying gaps exist between each yarn of the same type and also between yarns of different types. These gaps define a porosity that allows light to pass through in proportion to the area of the gaps. By using weft and / or warp yarns with a specific interlacing and elasticity, it is possible to vary the areas of the gaps. The ratio of the area occupied by the gaps to the total surface area of the screen is called the screen's openness ratio.In the case of a stretchable elastic fabric, this opening rate varies with the elastic deformation of the screen and therefore, for example, according to a mechanical tensile or tensile stress that the motorized drive device applies to the screen. Such a motorized drive device is described in patent application EP2847411.
[0004] What has been discussed here with regard to fabrics can be transposed to other non-woven screens whose structure has interstices or pores, for example as described in patent application EP0795674. In this case as well, an openness ratio can be defined. When the screen is elastically extensible, the openness ratio is likely to vary from a minimum value obtained in the absence of tensile stress to a maximum value beyond which irreversible deformations may occur.
[0005] The openness factor is used to characterize the degree of opacity of the screen or, in other words, the degree of solar permeability of the screen. The openness factor is preferably expressed as a percentage. Openness factors varying between: can be obtained with the same screen. - a low value close to 0%, typically 0.5%, and - a value on the order of 10%, depending on the tensile stress applied to the screen.
[0006] It appears that these screens can improve thermal and / or visual comfort in buildings. These screens also improve the energy efficiency of buildings.
[0007] There is a need to integrate these solutions effectively and appropriately into buildings.
[0008] The present invention aims to provide solutions to the aforementioned challenges and to propose a control method that improves the situation. In particular, the invention proposes a simple and reliable control method that allows for the efficient integration of variable solar permeability screens into buildings.
[0009] According to the invention, a method allows for the control of a motorized drive device for a shading device in a shutter, shading, or solar protection system comprising a screen that rolls up on a winding tube. The screen exhibits solar radiation permeability that depends on the intensity of a mechanical tension applied to the screen by the motorized drive device. The motorized drive device includes an electromechanical actuator intended to be assembled with the roll-up screen. The control method comprises: - a first step of measuring a first temperature, estimating the first temperature, or obtaining the first temperature, - a second step of measuring or estimating the initial brightness, or of obtaining the initial brightness, - a third step of calculating a control setpoint for the motorized drive device in order to obtain a permeability defined according to a rule based on the first temperature and the first light intensity, and - a fourth step in applying the control setpoint, the rule defining permeability values decreasing with temperature and decreasing with light.
[0010] The rule can be defined by a mapping based on the first temperature and the first brightness.
[0011] The mapping may present discontinuities.
[0012] Regardless of the first brightness, the rule defining the permeability values as a function of the first temperature can be concave, in particular the mapping obtained by the rule defining the permeability values as a function of the first temperature can be concave.
[0013] Regardless of the first brightness, the rule defining the permeability values as a function of the first temperature can be convex, in particular the mapping obtained by the rule defining the permeability values as a function of the first temperature can be convex.
[0014] Regardless of the first temperature, the rule defining the permeability values as a function of the first brightness can be concave, in particular the mapping obtained by the rule defining the permeability values as a function of the first brightness can be concave.
[0015] Regardless of the first temperature, the rule defining the permeability values as a function of the first brightness can be convex, in particular the mapping obtained by the rule defining the permeability values as a function of the first brightness can be convex.
[0016] The rule can be defined by the relation: 0F(lum, temp) = OFmin-OFmaxx[(lum-lummin)x(temp-tempmin) / ((lummax-lummin)x(tempmax-tempmin))]p with: - 0F(lum, temp): permeability as a function of the first luminosity and the first temperature, - OFmin: a maximum screen permeability value, - OFmax: a minimum screen permeability value, - lum: the current value of the first brightness, - temp: the current value of the first temperature, - lummin: a minimum value of the first brightness, - lummax: a maximum value of the first brightness, - tempmin: a minimum value of the first temperature, - tempmax: a maximum value of the first temperature, - p: a real number.
[0017] The first temperature can be: - an indoor temperature, or - a difference between an outside temperature and an indoor temperature setpoint.
[0018] The first brightness can be: - outdoor light, or - a difference between an external brightness level and an internal brightness setting.
[0019] The control method may include: - an action by a user resulting in the emission of a command to the motorized drive device so as to obtain a new permeability different from that defined according to the rule based on the first current temperature and the first current brightness, and - a modification of the rule so that the modified rule defines with the first current temperature and the first current brightness a permeability approaching the new permeability or equaling the new permeability.
[0020] The control process may include a modification of the rule depending on the season.
[0021] The steps, in particular the first, second, third and fourth steps, can be iterated: - at a first frequency if the solar radiation is incident along one direction or a first set of directions and / or if the intensity of the solar radiation is greater than a first threshold and / or if the screen is open, and - at a second frequency otherwise, the first frequency being greater than the second frequency.
[0022] The invention also relates to a control system, in particular a control unit of a motorized drive device and / or a motorized drive device for a blackout device of a closing, blackout installation, the control system comprising hardware and / or software elements implementing the method defined above, in particular hardware and / or software elements designed to implement the method defined above.
[0023] The invention also relates to a control system comprising means for implementing the process defined above.
[0024] According to the invention, the computer program product comprises program code instructions recorded on a computer-readable medium to implement the steps of the process defined above when said program runs on a computer.
[0025] According to the invention, the product is a computer program downloadable from a communication network and / or stored on a data medium readable by a computer and / or executable by a computer, is characterized in that it includes instructions which, when the program is executed by the computer, lead the computer to implement the process defined previously.
[0026] According to the invention, the computer-readable data recording medium on which a computer program is recorded includes program code instructions for implementing the method defined above.
[0027] According to the invention, the computer-readable recording medium includes instructions which, when executed by a computer, lead the computer to implement the process defined above.
[0028] The invention also relates to a signal from a data carrier, carrying the computer program product defined above.
[0029] Other features and advantages of the invention will become apparent from the following description, made with reference to the accompanying drawings, given by way of non-limiting examples and in which: Fig. 1 is a schematic cross-sectional view of an installation according to an embodiment of the invention; [Fig.2] is a schematic perspective view of the installation illustrated in [Fig.1]; [Fig.3] is a schematic axial and partial cross-sectional view of the installation illustrated in figures 1 and 2, showing an electromechanical actuator of the installation; [Fig.4] is a flowchart of an execution method of a control process according to the invention; [Fig.5] is a view of a first mapping used in a first variant of the execution method of the control process according to the invention; [Fig.6] is a view of a second mapping used in a second variant of the execution mode of the control method according to the invention; [Fig.7] is a view of a third map used in a third variant of the execution mode of the control method according to the invention; [Fig.8] is a table illustrating a logic used in a fourth variant of the execution mode of the control method according to the invention; [Fig.9] is a table illustrating a logic used in a fifth variant of the execution mode of the control method according to the invention.
[0030] First, with reference to Figures 1 and 2, an installation 100 comprising a closing, shading, or solar protection device 3 according to an embodiment of the invention is described. This installation 100, installed in a building (not shown), has an opening 1 in which a window 40 or a door (not shown) is located. This installation 100 is equipped with a screen 2 belonging to the closing, shading, or solar protection device 3, in particular a motorized roller blind.
[0031] Here, installation 100 includes window 40.
[0032] The window 40 comprises at least one fixed frame 41 and at least one pane of glass 42. The pane of glass 42 is arranged inside the fixed frame 41, in particular in an assembled configuration of the window 40.
[0033] Advantageously, the window 40 may, in addition, include at least one opening, not shown.
[0034] Advantageously, the glass 42 can be either mounted in the fixed frame 41, in the case where it is fixed relative to the fixed frame 41, or mounted in a frame of the opening, in the case where it is movable relative to the fixed frame 41, in particular according to a rotational movement, especially in the case of a tilting or casement window, or according to a translational movement, especially in the case of a sliding window in a horizontal or vertical direction, or according to two rotational movements, especially in the case of a tilt-and-turn window.
[0035] The closing, shading or sun protection device 3 is hereinafter referred to as the "shading device". The shading device 3 comprises the screen 2.
[0036] Here, the installation 100 includes the occulting device 3.
[0037] A roller blind conforming to an embodiment of the invention is described with reference to figures 1 and 2.
[0038] The occulting device 3 includes a motorized drive device 5. The motorized drive device 5 includes at least one electromechanical actuator 11 illustrated in [Fig.3].
[0039] Advantageously, the obscuring device 3 further comprises a winding tube 4. The screen 2 is windable onto the winding tube 4. In addition, the winding tube 4 is arranged so as to be driven in rotation by the electromechanical actuator 11.
[0040] Thus, the screen 2 of the occulting device 3 is wound on the winding tube 4 or unwound around it, the winding tube 4 being driven by the motorized drive device 5, in particular by the electromechanical actuator 11.
[0041] In this way, the screen 2 is mobile between a rolled-up position, in particular high, and an unrolled position, in particular low, and vice versa.
[0042] The screen 2 of the shading device 3 is a closing, shading and / or sun protection screen, rolling and unrolling around the winding tube 4, the inner diameter of which is greater than the outer diameter of the electromechanical actuator 11, so that the electromechanical actuator 11 can be inserted into the winding tube 4, when assembling the shading device 3.
[0043] The electromechanical actuator 11, in particular of tubular type, allows the winding tube 4 to be rotated around an axis of rotation X, so as to move, in particular unwind or wind, the screen 2 of the occulting device 3.
[0044] In an assembled state of the occulting device 3, the electromechanical actuator 11 is inserted into the winding tube 4.
[0045] The roller blind, which forms the shading device 3, comprises the screen 2, which is of the type with a variable opening ratio depending on the mechanical tensile or tension force applied to the screen by the motorized drive device. The opening ratio characterizes the screen's permeability to sunlight. The opening ratio or permeability is preferably expressed as a percentage. With the same screen, opening ratios can vary between: - a low value close to 0%, typically 0.5%, and - a value on the order of 10%. depending on the tensile or tension stress applied to screen 2.
[0046] The screen 2 is for example made up of a fabric. The fabric is guided and held laterally by two lateral tracks 6.
[0047] In the case of a roller blind, the raised position corresponds to the end bar 8, fixed to a free end of the fabric, being pressed against an edge of a roller blind housing 9 3, or to the end bar 8 stopping in a programmed upper limit position. Furthermore, the lowered position corresponds to the end bar 8 stopping in a programmed lower limit position, in particular at the height of a locking device. Several locking devices may be provided at different locations along the screen's travel to secure the end bar 8 and absorb the mechanical tensile forces exerted by the motorized drive on the screen.
[0048] Here, the screen 2 is configured to be moved, by means of the motorized drive device 5, in particular the electromechanical actuator 11, between an open position, corresponding to the wound-up position and which can also be called the first end-of-stroke position or upper end-of-stroke position FdCH, and a closed position, corresponding to the unwound position and which can also be called the second end-of-stroke position or lower end-of-stroke position FdCB.
[0049] Thus, the electromechanical actuator 11 is configured to drive, in other words drives, in movement the screen 2, between the first end position FdCH and the second end position FdCB, and vice versa, opposite the window 40, in particular the glass 42.
[0050] Preferably, a preferred intermediate position of the roll-up screen can be recorded. This corresponds to a fully extended state of the roll-up element with an opening angle chosen by a user. It can represent a compromise desired by the user between limiting direct sunlight and obtaining a sufficiently high level of illumination in the building.
[0051] The screen 2 can be arranged inside or outside the building.
[0052] One end of the roller blind fabric 3, opposite the end slat 8, is connected to the winding tube 4.
[0053] The roller tube 4 is arranged inside the housing 9 or simply supported freely for rotation on two lateral accessories. The fabric of the roller blind 3 rolls up and down around the roller tube 4 and is housed at least partially inside the housing 9, if applicable.
[0054] Generally, the box 9 is positioned above the opening 1, or in the upper part of the opening 1.
[0055] Advantageously, the motorized drive device 5 is controlled by a control unit forming part of the installation 100. The control unit can be, for example, a local control unit 12 or a central control unit 13.
[0056] Advantageously, the local control unit 12 can be connected, by wired or wireless link, with the central control unit 13.
[0057] Advantageously, the central control unit 13 can control the local control unit 12, as well as other similar local control units distributed throughout the building.
[0058] The motorized drive device 5 is preferably configured to execute commands for unwinding or retracting the screen 2 of the shading device 3, which may be issued, in particular, by the local control unit 12 or the central control unit 13. The motorized drive device 5 is also configured to apply sustained tensile forces to the screen when the motorized drive device 5 is no longer moving and / or is no longer powered. For this purpose, the motorized drive device 5 advantageously includes a brake 29.
[0059] The installation 100 comprises either the local control unit 12, or the central control unit 13, or the local control unit 12 and the central control unit 13.
[0060] The motorized drive device 5, including the electromechanical actuator 11, belonging to the installation 100 of Figures 1 and 2, is now described in more detail with reference to [Fig.3].
[0061] The electromechanical actuator 11 comprises at least one electric motor 16.
[0062] Advantageously, the electric motor 16 comprises a rotor and a stator, not shown and positioned coaxially around the axis of rotation X of the winding tube 4 in the mounted configuration of the motorized drive device 5.
[0063] Here, the electric motor 16 can be of the electronically commutated brushless type, also called "BLDC" (acronym for the Anglo-Saxon term BrushLess Direct Current) or "permanent magnet synchronous", or of the direct current type.
[0064] Control means for the electromechanical actuator 11, enabling the movement of the screen 2 of the occulting device 3, include at least one electronic control unit 15. This electronic control unit 15 is capable of activating the electric motor 16 of the electromechanical actuator 11 and, in particular, enabling the supply of electrical energy to the electric motor 16.
[0065] Thus, the electronic control unit 15 controls, in particular, the electric motor 16, so as to open or close the screen 2, as described previously.
[0066] The control means for the electromechanical actuator 11 include hardware and / or software means.
[0067] By way of non-limiting example, the material means may include at least one microcontroller 31.
[0068] Here, the motorized drive device 5 further includes the electronic control unit 15.
[0069] Advantageously, the electronic control unit 15 further comprises a first communication module 27, in particular for receiving control orders, the control orders being issued by an order transmitter, such as the local control unit 12 or the central control unit 13, these orders being intended to control the motorized drive device 5.
[0070] Advantageously, the first communication module 27 of the electronic control unit 15 is of the wireless type. In particular, the first communication module 27 is configured to receive radio control commands.
[0071] Advantageously, the first communication module 27 can also allow the reception of control orders transmitted by wired means.
[0072] Advantageously, the electronic control unit 15, the local control unit 12 and / or the central control unit 13 can be in communication with a weather station, not shown, located inside the building or outside the building, including, in particular, one or more sensors that can be configured to determine, for example, a temperature, a brightness, or a wind speed, in the case where the weather station is located outside the building.
[0073] Advantageously, the electronic control unit 15, the local control unit 12 and / or the central control unit 13 can also be in communication with a server 28, as illustrated in [Fig.2], so as to control the electromechanical actuator 11 according to data made available remotely via a communication network, in particular an internet network that can be connected to the server 28.
[0074] The electronic control unit 15 can be operated from the local control unit 12 and / or central control unit 13. The local control unit 12 and / or central control unit 13 is equipped with a control keypad. The control keypad of the local control unit 12 or central control unit 13 includes one or more selection elements 14 and, optionally, one or more display elements 34.
[0075] By way of non-limiting examples, the selection elements may include push buttons and / or touch-sensitive keys. The display elements may include light-emitting diodes and / or a display, for example LCD (Liquid Crystal Display) or TFT (Thin Film Transistor). The selection and display elements may also be implemented using a touchscreen.
[0076] Advantageously, the local control unit 12 and / or central control unit 13 includes at least one second communication module 36.
[0077] Thus, the second communication module 36 of the local control unit 12 or central control unit 13 is configured to transmit, in other words, sends out, control orders, in particular by wireless means, for example radioelectric, or by wired means.
[0078] In addition, the second communication module 36 of the local control unit 12 or central control unit 13 can also be configured to receive, in other words receives, control orders, in particular through the same means.
[0079] Advantageously, the second communication module 36 of the local control unit 12 or central control unit 13 is configured to communicate, in other words communicates, with the first communication module 27 of the electronic control unit 15.
[0080] Thus, the second communication module 36 of the local control unit 12 or central control unit 13 exchanges control orders with the first communication module 27 of the electronic control unit 15, either unidirectionally or bidirectionally.
[0081] Advantageously, the local control unit 12 is a control point, which may be fixed or portable. A fixed control point may be a control box intended to be fixed to a wall of the building or to a face of the fixed frame 41 of the window 40 or a door. A portable control point may be a remote control, a smartphone, or a tablet.
[0082] Advantageously, the local control unit 12 and / or central control unit 13 further includes a controller 35.
[0083] The motorized drive device 5, in particular the electronic control unit 15, is preferably configured to execute movement control commands, including closing and opening, of the screen 2 of the device 3. These control orders can be issued, in particular, by the local control unit 12 or by the central control unit 13.
[0084] The motorized drive device 5 can be controlled by the user, for example, by receiving a command corresponding to pressing one or more of the selection elements 14 of the local control unit 12 or central control unit 13. Pressing one selection element commands the rolling movement of the roller screen to the recorded rolled-up end position. Pressing another selection element commands the unrolling movement of the roller screen to the recorded unrolled end position. Finally, preferably, pressing a third selection element commands the rolling or unrolling movement of the roller screen to the preferred recorded intermediate position.
[0085] The motorized drive device 5 can also be controlled automatically, for example by receiving a control command corresponding to at least one signal from at least one sensor 43, 44 forming part of the installation 100 and / or a signal from a clock, not shown, of the electronic control unit 15, in particular the microcontroller 31. The at least one sensor 43, 44 and / or the clock can be integrated, alternatively, not shown, into the local control unit 12 or the central control unit 13. Preferably, the drive device 5 is controlled automatically by receiving a control command generated by the local control unit 12 or central control unit 13 from information received by at least one sensor 43, 44.
[0086] Advantageously, the electromechanical actuator 11 further comprises a housing 17, in particular a tubular housing. The electric motor 16 is mounted inside the housing 17, particularly in an assembled configuration of the electromechanical actuator 11.
[0087] The housing 17 is hollow. The housing 17 comprises a first end 17a and a second end 17b. The second end 17b is opposite the first end 17a.
[0088] Advantageously, the electromechanical actuator 11 further comprises a crown 30.
[0089] The crown 30 is disposed, in other words is configured to be disposed, in the vicinity of the first end 17a of the housing 17, in particular in the assembled configuration of the electromechanical actuator 11.
[0090] Here, the housing 17 of the electromechanical actuator 11 is cylindrical in shape, in particular of revolution around the axis of rotation X, and is open at each of its ends 17a, 17b.
[0091] Advantageously, the housing 17 is a tube having a circular cross-section.
[0092] In one embodiment, the housing 17 is made of a metallic material.
[0093] The material of the electromechanical actuator housing is not limiting and may be different. It could be, in particular, a plastic material.
[0094] Advantageously, the electromechanical actuator 11 further comprises an output shaft 20.
[0095] Advantageously, the electromechanical actuator 11 further comprises a reducer 19.
[0096] Advantageously, the reducer 19 comprises at least one reduction stage. The reduction stage may be an epicyclic gear train.
[0097] The type and number of reduction stages of the reducer are not limiting.
[0098] Advantageously, the electromechanical actuator 11 further includes the brake 29 previously mentioned.
[0099] By way of non-limiting examples, the brake 29 may be a spring brake, a cam brake, a magnetic brake or an electromagnetic brake.
[0100] Here and as can be seen in [Fig.3], in particular in the assembled configuration of the electromechanical actuator 11, the brake 29 is configured to be disposed, in other words is disposed, between the electric motor 16 and the reducer 19, that is to say at the output of the electric motor 16.
[0101] Alternatively, not shown, particularly in the assembled configuration of the electromechanical actuator 11, the brake 29 is configured to be arranged, in other words is arranged: - between the electronic control unit 15 and the electric motor 16, in other words at the input of the electric motor 16, or - between the reducer 19 and the output shaft 20, in other words at the output of the reducer 19, or - between two reduction stages of reducer 19.
[0102] Advantageously, the reducer 19 and, optionally, the brake 29 are mounted inside the housing 17 of the electromechanical actuator 11, particularly in the assembled configuration of the electromechanical actuator 11.
[0103] Advantageously, the electromechanical actuator 11 and, more particularly, the electronic control unit 15 further includes an obstacle detection and limit switch device, not shown, during the winding of the screen 2 and during the unwinding of this screen 2, which may be mechanical or electronic.
[0104] Advantageously, the obstacle detection and limit switch device is implemented by means of the microcontroller 31 of the electronic control unit 15 and, in particular, by means of an algorithm implemented by this microcontroller 31.
[0105] The winding tube 4 is driven in rotation about the axis of rotation X and the housing 17 of the electromechanical actuator 11 by being supported via Two pivot joints. The first pivot joint is made at one end of the winding tube 4 by means of the ring 30. The ring 30 thus provides a bearing. The second pivot joint, not shown, is made at the other end of the winding tube 4, opposite the first end.
[0106] The crown 30 forms, in other words is configured to form or constitute, a bearing for the rotational guidance of the winding tube 4, around the housing 17 of the electromechanical actuator 11, in particular in an assembled configuration of the motorized drive device 5 and, consequently, of the occulting device 3.
[0107] Advantageously, the electromechanical actuator 11 further comprises a torque support 21, which can also be called an "actuator head" or "fixed point".
[0108] Here, the torque support 21 is disposed at the first end 17a of the housing 17 of the electromechanical actuator 11, in particular in the assembled configuration of the electromechanical actuator 11.
[0109] The torque support 21 allows the forces exerted by the electromechanical actuator 11 to be absorbed, in particular the torque exerted by the electromechanical actuator 11, with respect to the building structure. Advantageously, the torque support 21 also allows the forces exerted by the winding tube 4 to be absorbed, in particular the weight of the winding tube 4, the electromechanical actuator 11, and the screen 2, and ensures that these forces are absorbed by the building structure.
[0110] Thus, the torque support 21 of the electromechanical actuator 11 allows the electromechanical actuator 11 to be fixed on a frame 23, in particular to a side wall of the box 9 or on one of the side accessories supporting the winding tube 4.
[0111] Advantageously, the torque support 21 is projecting at the first end 17a of the housing 17 of the electromechanical actuator 11.
[0112] Advantageously, the torque support 21 closes, in other words is configured to close, the first end 17a of the housing 17, particularly in the assembled configuration of the electromechanical actuator 11.
[0113] Furthermore, the torque support 21 of the electromechanical actuator 11 can support at least part of the electronic control unit 15.
[0114] Advantageously, the torque support 21 is fixed to the housing 17 by means of one or more fasteners, not shown, particularly in the assembled configuration of the electromechanical actuator 11. The fastener(s) may be, in particular, bosses, fixing screws, elastic snap-fit fasteners, grooves fitted into notches or a combination of these different fasteners.
[0115] Here and as illustrated in [Fig. 3], the crown 30 is disposed or inserted, in other words is configured to be disposed or inserted, around a part of the housing 17, in particularly in the assembled configuration of the electromechanical actuator 11. In this case, the ring 30 is mounted to rotate freely around the housing 17.
[0116] In an alternative, not shown, the ring 30 is disposed or inserted, in other words is configured to be disposed or inserted, around the torque support 21, in particular in the assembled configuration of the electromechanical actuator 11. In this case, the ring 30 is mounted freely to rotate around the torque support 21.
[0117] In another variant, not shown, the ring 30 is disposed or inserted, in other words is configured to be disposed or inserted, on the one hand, around the torque support 21 and, on the other hand, around a part of the housing 17, in particular in the assembled configuration of the electromechanical actuator 11. In such a case, the ring 30 can be mounted freely in rotation, on the one hand, around the torque support 21 and, on the other hand, around the housing 17.
[0118] Advantageously, the electronic control unit 15 can be supplied with electrical energy by means of an electrical power cable 18.
[0119] Here and as illustrated in [Fig.3], the electronic control unit 15 is thus arranged, in other words is integrated, inside the housing 17 of the electromechanical actuator 11.
[0120] Alternatively, not shown, the electronic control unit 15 is located outside the housing 17 of the electromechanical actuator 11 and, in particular, mounted on the casing 9 or in the torque support 21.
[0121] Advantageously, the torque support 21 may include at least one button, not shown.
[0122] This or these buttons can allow adjustment of the electromechanical actuator 11 through one or more configuration modes, pairing with the electromechanical actuator 11 one or more control units 12, 13, resetting one or more parameters, which may be, for example, a limit position, resetting the paired control unit(s) 12, 13 or even controlling the movement of the screen 2.
[0123] Advantageously, the torque support 21 may include at least one display device, not shown, so as to allow a visual indication of an operating parameter of the motorized drive device 5.
[0124] Advantageously, the display device includes at least one light source, not shown, in particular a light-emitting diode.
[0125] This or these light sources are mounted on an electronic board of the electronic control unit 15 and, optionally, a transparent or translucent cover and / or a light guide, to allow the passage of the light emitted by the light source or by each of the light sources.
[0126] Advantageously, the output shaft 20 of the electromechanical actuator 11 is disposed inside the winding tube 4 and at least partly outside the housing 17 of the electromechanical actuator 11.
[0127] Here, one end of the output shaft 20 protrudes from the housing 17 of the electromechanical actuator 11, in particular from the second end 17b of the housing 17 opposite the first end 17a.
[0128] Advantageously, the output shaft 20 of the electromechanical actuator 11 is configured to drive a connecting element 22 in rotation. This connecting element 22 is connected to the winding tube 4, in particular in the assembled configuration of the occulting device 3. The connecting element is made in the form of a wheel.
[0129] When the electromechanical actuator 11 is switched on, the electric motor 16 and the reducer 19 drive the output shaft 20 in rotation. In addition, the output shaft 20 of the electromechanical actuator 11 drives the winding tube 4 in rotation via the connecting element 22.
[0130] Thus, the winding tube 4 causes the screen 2 of the occulting device 3 to rotate, so as to open or close the opening 1.
[0131] The obscuring device 3 and, more particularly, the motorized drive device 5 further comprises an electrical power supply device 26, visible in [Fig. 2]. The electromechanical actuator 11 is electrically connected to the electrical power supply device 26.
[0132] The electrical power supply device 26 includes at least one rechargeable battery 24 and at least one photovoltaic panel 25.
[0133] The electrical power supply device 26 is configured to supply, in other words supplies, electrical power to the electromechanical actuator 11 and, more particularly, to the electronic control unit 15 and the electric motor 16.
[0134] Thus, the electrical power supply device 26 makes it possible to supply electrical power to the electromechanical actuator 11, without itself being electrically connected to a mains power supply network.
[0135] Here, the photovoltaic panel 25 is electrically connected to the battery 24.
[0136] The electromechanical actuator 11 is electrically connected to the electrical power supply device 26 and, more particularly, to the battery 24, in particular by means of the electrical power supply cable 18.
[0137] Advantageously, the battery 24 is configured to supply, in other words, provides electrical energy to the electromechanical actuator 11, in particular the electronic control unit 15 and the electric motor 16. In addition, the battery 24 is configured to be supplied, in other words, is supplied with electrical energy by the photovoltaic panel 25.
[0138] Thus, the recharging of the battery 24 is carried out by solar energy, by means of the photovoltaic panel 25.
[0139] Advantageously, the battery 24 can be arranged at the level of the box 9 of the occultation device 3.
[0140] Here and as illustrated in [Fig.2], the battery 24 is arranged outside the housing 9.
[0141] Alternatively, not shown, the battery 24 can be arranged inside the housing 9, inside the winding tube 4 while being outside the casing 17, or inside the casing 17, in particular in the assembled configuration of the electromechanical actuator 11. In this last case, the electromechanical actuator 11 includes the battery 24.
[0142] When the torque support 21 includes a display device, the operating parameter that this display device allows to be viewed is advantageously a state of charge of the battery 24.
[0143] Here, the electromechanical actuator 11 includes the power supply cable 18 enabling its supply of electrical energy, in particular the power supply of the electronic control unit 15 and the power supply of the electric motor 16, in particular from the battery 24.
[0144] Here and as illustrated in [Fig.3], the battery 24 is electrically connected directly to the electronic control unit 15, by the power supply cable 18.
[0145] Advantageously, the battery 24 comprises a plurality of energy storage elements 32, in particular electrically connected in series. The energy storage elements 32 of the battery 24 may be, in particular, rechargeable accumulators or rechargeable cells.
[0146] Advantageously, the photovoltaic panel 25 comprises at least one photovoltaic cell, not shown, and, more particularly, a plurality of photovoltaic cells.
[0147] Advantageously, the motorized drive device 5, in particular the photovoltaic panel 25 and the electronic control unit 15, includes charging elements configured to charge the battery 24, from the solar energy recovered by the photovoltaic panel 25. In this case, the current flows between the components 15, 24 and 25 through a wired link, not shown, which may be separate from the electrical power supply cable 18.
[0148] Thus, the charging elements configured to charge the battery 24, from solar energy, make it possible to convert the solar energy recovered by the photovoltaic panel 25 into electrical energy.
[0149] Alternatively or in addition, the motorized drive device 5, in particular the electromechanical actuator 11, is supplied with electrical energy from a sector power supply network, in particular through the commercial alternative network.
[0150] Here, and as illustrated in [Fig. 2], the electronic control unit 15 comprises a single electronic board. Furthermore, the electronic board is configured to control the electric motor 16, to enable the charging of the battery 24, and optionally, to access parameterization and / or configuration functions of the electromechanical actuator 11, by means of selection and, optionally, display elements, not shown. As mentioned above, the battery charging elements 24 can be arranged on the electronic board.
[0151] In an alternative, not shown, the electronic control unit 15 comprises a first electronic board and a second electronic board. The first electronic board is configured to control the electric motor 16. Furthermore, the second electronic board is configured to allow the charging of the battery 24 and, optionally, access to parameterization and / or configuration functions of the electromechanical actuator 11, by means of selection and, optionally, display elements, not shown. The battery charging elements for the battery 24 may be located on the second electronic board.
[0152] In the case where the electronic control unit 15 comprises a first electronic board and a second electronic board, not shown, the first electronic board of the electronic control unit 15 may be arranged inside the housing 17 of the electromechanical actuator 11. Furthermore, the second electronic board may be arranged inside the torque support 21 of the electromechanical actuator 11. Moreover, the torque support 21 may include a cover, not shown. In addition, the second electronic board may be arranged inside a housing formed between a portion of the torque support 21 and the cover.
[0153] Installation 100 may also include at least one mobile terminal 33.
[0154] Here, the mobile terminal 33 can be the local control unit 12 and include all or part of the elements constituting it.
[0155] Preferably, the mobile terminal 33 is a smart phone, also called a "Smartphone" in English, or a tablet.
[0156] Here, the mobile terminal 33 includes the second communication module 36, as described previously with reference to the local control unit 12, as well as the selection elements 14 and display 34. This second communication module 36 allows it to exchange, in particular, parameter information with the electromechanical actuator 11, according to the method which will be described below.
[0157] Advantageously, the installation 100 further comprises a solar sensor 43, in particular a single solar sensor 43 for a façade of the building or for the building. In addition, the electronic control unit 15 is configured to control, in other words, control, the electromechanical actuator 11 or, optionally, a plurality of electromechanical actuators 11, as a function of at least one value of at least one sunlight condition from the sunlight sensor 43. The sunlight sensor 43 is installed inside and / or outside the building, in particular on the facade on which installation 100 is located.
[0158] Alternatively, the electronic control unit 15 is configured to control, in other words, command, the electromechanical actuator 11, as a function of at least one value of at least one sunlight condition from the server 28.
[0159] Advantageously, the installation 100 further comprises a temperature sensor 44, in particular a single temperature sensor 44 for a facade of the building or for the building as a whole. Furthermore, the electronic control unit 15 is configured to control, i.e., operate, the electromechanical actuator 11 or, optionally, a plurality of electromechanical actuators 11, based on at least one value of at least one temperature condition from the temperature sensor 44. The temperature sensor 44 is installed inside and / or outside the building, in particular on the facade on which the installation 100 is located. For an outside temperature, a weather service can be used, for example, and the temperature information can be obtained using the server 28.
[0160] The light sensor and / or the temperature sensor can be integrated into one of the control units 12 of the installation 100. Alternatively, the electronic control unit 15 is configured to control, in other words, commands, the electromechanical actuator 11, according to at least one value of at least one temperature and / or light condition from the server 28.
[0161] The installation 100, in particular the local control unit 12, the central control unit 13, the electronic control unit 15, and the motorized drive device 5, comprise all the hardware and / or software elements necessary for implementing the control method of the invention, as described below. These elements may include software modules. A single local control unit 12 or a single central control unit 13 can control several motorized drive devices 5 and, ultimately, control the permeability of several screens 2.
[0162] An embodiment of a method for controlling the motorized drive device 5 for the shading device 3 of the shutter, shading, or solar protection installation 100 according to the invention and shown in Figures 1 to 3 is now described with reference to Figures 4 to 9. The method comprises the implementation of different iterations of the SI steps 10 to S170 which are described below.
[0163] In a first SI step 10, a first temperature is measured, estimated, or obtained. This first temperature is advantageously the ambient temperature inside the building. For example, the first temperature is measured using the temperature sensor 44. Alternatively, the first temperature can be estimated. Preferably, the value of the first measured, estimated, or obtained temperature is the temperature, or an estimate, of the air temperature in the room where the installation is located.
[0164] In a second step S120, a first brightness is measured, estimated, or obtained. This first brightness is advantageously the ambient brightness outside the building. For example, the first brightness is measured using the brightness sensor 43. Alternatively, the first brightness can be estimated. In this case, a meteorological service can be used, for example, and the first brightness information can be obtained using the server 28. The first brightness can also be obtained by any means of information or modeling. Preferably, the value of the first brightness measured, estimated, or obtained is the brightness or an estimate of the brightness on the facade on which the installation is located, i.e., the brightness incident into the building through the opening 1.
[0165] The first and second steps can be: - implemented in the order described above, or - implemented in a different order, i.e. by implementing step S120 then step S110, or - implemented simultaneously or almost simultaneously.
[0166] Furthermore, either of the steps SI 10 and S120 may be omitted during an iteration. In this case, the other steps of the iteration may be implemented with the result (of this omitted step) that was obtained during its last execution in a previous iteration.
[0167] In a third step S130, a control setpoint for the motorized drive device 5 is calculated to obtain a solar radiation permeability of the screen defined as a function of the first temperature and the first luminosity. This calculation can be performed by: - the motorized drive device 5, and / or - a local control unit 12, and / or - a central control unit 13, and / or - a remote server 28.
[0168] In this calculation step, the values of the first temperature and the first luminosity are used. Specifically, the values of the first temperature and the first luminosity are fed into a mathematical rule or function that provides a value for the screen's permeability to solar radiation as a representation of these values. This mathematical function or rule can be represented by a map as illustrated in Figures 5 to 7. On these maps, knowing a value for luminosity (in lux) or solar energy (in W / m²) on the x-axis and a value for temperature (in °C) on the y-axis, it is possible to determine a point on the represented surface and find the value for permeability to solar radiation by projecting this point onto the axis of elevation (as a percentage).
[0169] Preferably, the mathematical function is such that the permeability decreases with both the first temperature and the first luminosity; that is, as the first temperature increases, the value of the permeability decreases, and as the first luminosity increases, the value of the permeability decreases. In other words, within the domain of definition of the mathematical function: - for any first temperature, the permeability is a decreasing function (in the broad sense) of the first luminosity, and - for any first luminosity, the permeability is a decreasing function (in the broad sense) of the first temperature.
[0170] Based on the calculated permeability, a control setpoint for the motorized drive device 5 can then be determined. Indeed, the screen 2 has a characteristic that establishes a link between its permeability to solar radiation and the tensile mechanical stress to which it is subjected. Knowing the desired permeability, the mechanical stress that must be delivered by the motorized drive device 5 by pulling on the screen 2 can then be determined. The control setpoint for the motorized drive device 5 can thus be determined based on this mechanical torque.
[0171] In a fourth step S140, the control setpoint determined in the previous step is applied and the motorized drive device 5 is therefore driven to deliver the required torque and the screen is thus subjected to a traction force configuring it as desired and defined by the mathematical rule according to the first temperature and the first brightness.
[0172] In a fifth step S150, a user performs an action on the installation, resulting in the issuance of a command to the motorized drive device 5 so as to modify the permeability of the screen 2 and achieve a new permeability different from that defined according to a rule based on the first current temperature and the first current brightness. For example, the user performs an action reducing the tensile stress exerted on the screen 2 in order to decrease the permeability of screen 2 or the user performs an action increasing the tensile stress exerted on screen 2 in order to increase the permeability of screen 2. Once the permeability modification is satisfactory to the user, they can validate this new configuration and, as a result, request that this new configuration be taken into account, i.e. request a modification of the mathematical rule to take this new permeability into account.
[0173] In a sixth step S160, the mathematical rule is then modified. The modification of the mathematical rule can take several forms. For example, the mathematical rule can be modified so that the surface or map is moved in translation along the dimension axis to pass through the new operating point defined by the user. Alternatively, the mathematical rule can be modified so that the surface or map is moved closer to the new operating point defined by the user by translation along the dimension axis. As an alternative or in addition, the surface or map can be deformed more or less locally to pass through or to move closer to the new operating point. In such a case, the edges of the surface or map can remain unchanged.Preferably, despite the modifications described above, the mathematical rule remains such that permeability decreases with both the first temperature and the first luminosity; that is, when the first temperature increases, the value of permeability decreases, and when the first luminosity increases, the value of permeability decreases.
[0174] Thus, in the sixth step S160, the rule is modified so that the modified rule defines, with the first current temperature and the first current brightness, at the time of the modification, a permeability approaching the new permeability or equaling the new permeability.
[0175] These steps S150 and S160 are optional and are advantageously implemented only in certain iterations of the process. Indeed, in the absence of specific action by the user, steps S150 and S160 are ignored and the process proceeds to a possible step S170 or loops back to step S110.
[0176] In step S170, the rule is modified according to the season. For example, a first rule may be applied during a warm season and a second rule may be applied during a cold season. Alternatively, a first rule may be applied in spring, a second rule in summer, a third rule in autumn, and a fourth rule in winter. This modification can be automated by placing the date of the iterations of the process steps in a calendar. The date may be known from the installation, which includes a clock. Alternatively, the date may be information obtained from an auxiliary system, in particular from server 28. Finally, the date can be estimated by analyzing the variations in brightness measured by the brightness sensor 43. This step S170 is optional. It can be omitted, and the process can loop back to step S110 without implementing step S170.
[0177] In step S170, the modifications to the rule may be similar to those described with reference to step S 160, that is to say, the rule may be modified in particular by translation along the axis of the dimensions and / or the rule may be deformed more locally.
[0178] The control method can implement continuous mapping, that is, mapping represented by a continuous three-dimensional surface within a domain defined by a range of first brightness values and a range of first temperature values. Examples of continuous mapping are illustrated in Figures 5 to 7.
[0179] In these maps of figures 5 to 7, the mathematical rule or function can be of the following form: 0F(lum, temp) = OFmin-OFmaxx[(lum-lummin)x(temp-tempmin) / ((lummax-lummin)x(tempmax-tempmin))]p with: - 0F(lum, temp): permeability as a function of the first current luminosity and the first current temperature, - OFmin: a maximum screen permeability value, - OFmax: a minimum screen permeability value, - lum: the current value of the first brightness, - temp: the current value of the first temperature, - lummin: a minimum value of the first brightness, - lummax: a maximum value of the first brightness, - tempmin: a minimum value of the first temperature, - tempmax: a maximum value of the first temperature, - p: a real number.
[0180] The OFmin and OFmax values are given, for example, by the nature of the screen 2 used.
[0181] Fig. 5 illustrates, for example, a mathematical rule using the previously mentioned formula with the exponent p equal to 1. We then obtain a map that can be represented by a surface ruled on Fig. 5.
[0182] Fig. 6 illustrates, for example, a mathematical rule using the previously mentioned formula with the exponent p greater than 1, for example 2.
[0183] Fig. 7 illustrates, for example, a mathematical rule using the previously mentioned formula with the exponent p less than 1, for example 0.5.
[0184] In step S 160 and / or in step S 170, it is possible to modify the value of the exponent p in order to modify the mathematical rule.
[0185] Regardless of the method of execution and the variant, the mapping resulting from the mathematical rule or mathematical function can be convex, as illustrated for example in [Fig.6].
[0186] Regardless of the method of execution and the variant, the mapping resulting from the mathematical rule or mathematical function can be concave, as illustrated for example in [Fig.7].
[0187] More generally, regardless of the first brightness, the rule defining the permeability values as a function of the first temperature can be concave or can be convex, in particular the mapping resulting from the rule defining the permeability values as a function of the first temperature can be concave or can be convex.
[0188] More generally, regardless of the first temperature, the rule defining the permeability values as a function of the first brightness can be concave or can be convex, in particular the mapping resulting from the rule defining the permeability values as a function of the first brightness can be concave or can be convex.
[0189] As an alternative to the variants illustrated in Figures 5 to 7, in other variants, the mathematical rule or mathematical function may exhibit discontinuities. In these other variants, the mathematical rule could be represented by a map showing discontinuities or jumps in value along the axis of the coordinates. Such logics can also be illustrated by tables such as those shown in Figures 8 and 9.
[0190] In these other variants, different parameters are used, defined below: - Enight: the outside brightness below which it is considered night, - Eday: the outside brightness from which it is considered day (different from Enight in order to generate a hysteresis condition and limit movements to time intervals close to the screen), - Edark: a brightness level below which the day is considered to be dim, - Elight: a level of brightness above which the day is considered to be very bright. - Tcold: a temperature (inside the building) below which the risk of discomfort due to heat is considered unlikely in the short term. However, the risk of visual discomfort is possible. - Thoth: a temperature (inside the building) above which the risk of discomfort due to heat is considered significant. The risk of visual discomfort is also possible.
[0191] In the two variants illustrated in figures 8 and 9, different permeability values of the screen 2 were retained and each of these permeability values was associated with first temperature and first luminosity ranges.
[0192] For example, in the variant illustrated in [Fig.8], the following four permeability values were used: 10%, 5%, 3% and 0.5%. Each of these values is associated with a range of first temperature and first luminosity values.
[0193] For example, in the variant illustrated in [Fig.9], the following three permeability values were used: 10%, 5% and 0.5%. Each of these values is associated with a range of first temperature and first luminosity values.
[0194] In these variants illustrated in Figures 8 and 9, hysteresis features are advantageously incorporated to avoid excessive changes in the screen's permeability. In this same vein, it is noted that, for example, in the case of strong sunlight, the transition to a permeability of 0.5% occurs when the initial temperature rises above Thot. However, the return to a higher permeability only occurs when the initial temperature falls below Tcold.
[0195] In the assumption of application of one of the variants represented in figures 8 and 9, it is possible, in step S 160 and / or in step S 170, to modify the value of one or any combination of the parameters listed above (Enight, Eday, Edark, Elight, Tcold, Thot).
[0196] In the various embodiments and variants described, the first temperature is an indoor temperature. As an alternative, the first temperature could be different. For example, the first temperature could be the difference between an outdoor temperature and an indoor temperature (heating or cooling setpoint).
[0197] In the various embodiments and variants described, the first brightness level is an external brightness level. Alternatively, the first brightness level could be different. For example, the first brightness level could be the difference between an external brightness level for the building and an internal brightness setpoint for the building.
[0198] Preferably, the control method is implemented under certain conditions. One condition is, for example, the detection, determination, or acquisition of a minimum brightness level, for example, Enight or Eday. Below this minimum brightness, the control method may not be implemented. In particular, below this minimum brightness, the screen 2 may be completely rolled up and not obscure the opening at all. Above this minimum brightness, the control method is advantageously implemented, i.e., the screen is completely unrolled in front of the opening and its permeability to light radiation is controlled using the motorized drive device 5.
[0199] Preferably, the SI 10-S170 steps, in particular the first SI 10, second S120, the third S130 and fourth S140 steps are iterated: - at a first frequency if the following condition is met: (i) solar radiation is incident along one direction or a first set of directions and / or (ii) the intensity of solar radiation is greater than a first threshold and / or (iii) the screen is open, and - to a second frequency if the condition is not met, the first frequency being greater than the second frequency. This allows for a rapid response in case of glare risk, preventing light discomfort for building occupants. Specifically, more frequent sampling (first frequency) of brightness measurements or estimates is taken for high observed brightness values or a particular range of light ray incidence angles when the screen is open. Once the screen is closed (i.e., once the permeability is reduced) to limit glare, sampling can again be performed at the second frequency (nominal iteration frequency of the process steps).
[0200] Throughout this document, for the sake of simplicity and as is very often the case in everyday language, the concepts of physical quantity and the intensity value of that physical quantity may at times be used interchangeably. For example, the term "first temperature" may be used to refer to a value of that first temperature.
Claims
Demands
1. A method for controlling a motorized drive device (5) for a shading device (3) of a closure, shading, or solar protection installation (100) comprising a screen (2) that can be rolled up on a winding tube (4), the screen (2) having a permeability to solar radiation dependent on the intensity of a mechanical tension stress applied to the screen (2) by the motorized drive device (5), the motorized drive device (5) comprising an electromechanical actuator (11) intended to be assembled with the rollable screen (2), the control method comprising: - a first step (S10) of measuring a first temperature or estimating the first temperature or obtaining the first temperature, - a second step (S120) of measuring a first brightness or estimating the first brightness or obtaining the first brightness,- a third step (S 130) of calculating a control setpoint for the motorized drive device (5) so as to obtain a permeability defined according to a rule based on the first temperature and the first luminosity, and - a fourth step (S 140) of applying the control setpoint, the rule defining permeability values decreasing with temperature and decreasing with luminosity.
2. Control method according to the preceding claim, characterized in that the rule is defined by a mapping as a function of the first temperature and the first brightness.
3. Control method according to the preceding claim, characterized in that the mapping has discontinuities.
4. A control method according to any one of the preceding claims, characterized in that, regardless of the first brightness, the rule defining the permeability values as a function of the first temperature is concave or in that, regardless of the first brightness, the rule defining the permeability values as a function of the first temperature is convex.
5. A control method according to any one of claims 1 to 4, characterized in that, regardless of the first temperature, the rule defining the permeability values as a function of the first brightness is concave or in that, regardless of the first temperature, the rule defining the permeability values as a function of the first brightness is convex.
6. A control method according to any one of the preceding claims, characterized in that the rule is defined by the relation: OF(lum, temp) = OFmin-OFmaxx[(lum-lummin)x(temp-tempmin) / ((lummax-lummin)x (tempmax-tempmin) )]p with: - OF(lum, temp) : the permeability as a function of the first brightness and the first temperature, - OFmin : a maximum value of screen permeability, - OFmax : a minimum value of screen permeability, - lum : the current value of the first brightness, - temp : the current value of the first temperature, - lummin : a minimum value of the first brightness, - lummax : a maximum value of the first brightness, - tempmin : a minimum value of the first temperature, - tempmax : a maximum value of the first temperature, - p : a real number.
7. A control method according to any one of the preceding claims, characterized in that the first temperature is: - an indoor temperature, or - a difference between an outdoor temperature and an indoor temperature setpoint, and / or in that the first brightness is: - an outdoor brightness, or - a difference between an outdoor brightness and an indoor brightness setpoint.
8. A control method according to any one of the preceding claims, characterized in that the control method comprises: - an action (S150) by a user resulting in the emission of a control command to the motorized drive device (5) so as to obtain a new permeability different from that defined according to the rule based on the first current temperature and the first current brightness, and - a modification (S 160) of the rule so that the modified rule defines with the first current temperature and the first current brightness a permeability approaching the new permeability or equaling the new permeability.
9. A control method according to any one of the preceding claims, characterized in that the control method comprises a modification (S 170) of the rule depending on the season.
10. A control method according to any one of the preceding claims, characterized in that the steps, in particular the first, second, third and fourth steps, are iterated: - at a first frequency if the solar radiation is incident along a first direction or a first set of directions and / or if the intensity of the solar radiation is greater than a first threshold and / or if the screen is open, and - at a second frequency, otherwise, the first frequency being greater than the second frequency.
11. Control system, in particular control unit (12, 13) of a motorized drive device and / or motorized drive device (5) for a blackout device (3) of a closing, blackout installation (100), the control system comprising hardware and / or software elements (12, 13, 14, 33, 34, 35, 36, 37, 38, 39) implementing the method according to any one of claims 1 to 10, in particular hardware elements (14, 33, 34, 35, 36, 37, 38, 39) designed to implement the method according to any one of claims 1 to 10.