Method for controlling the operation of an electromechanical actuator for a shading device, associated electromechanical actuator and shading device

Abstract

The invention relates to a method for controlling the operation of an electromechanical actuator, which comprises a step of winding (E100) a screen, from a lowered end-of-travel position of a bar or from a position of the bar located between the lowered end-of-travel position and a breakage position of the arms, and, during the winding step (E100), a first step of controlling (E11) the actuator according to a rotational speed ramp (V) from a first rotational speed setpoint value (V1) of an output shaft of the actuator up to a second rotational speed setpoint value (V2) of the output shaft, strictly greater than the first setpoint value, so as to cross the breakage position of the arms at a rotational speed value (Vc) of the output shaft that is between the first and second setpoint values (V1, V2).

Description

[0001] TITLE: Method for controlling the operation of an electromechanical actuator for a blinding device, electromechanical actuator and associated blinding device

[0002] The present invention relates to a method of controlling in operation an electromechanical actuator for a blackout device, in other words a blackout device.

[0003] The present invention also relates to an electromechanical actuator for a blackout device, in other words an electromechanical actuator of a blackout device, as well as a blackout device comprising a screen driven in movement by such an electromechanical actuator.

[0004] In general, the present invention relates to the field of blackout devices, in particular arm blinds, comprising a motorized drive device moving a screen, between at least a first position and at least a second position.

[0005] A motorized drive device includes an electromechanical actuator of a movable sun protection element, such as a blind or any other equivalent material, hereafter referred to as a screen.

[0006] We already know of document FR 2 816 465 A1, which describes a method for controlling an electromechanical actuator that rotates the roller tube of a blinding device, in this case, a roller shutter. The blinding device comprises the roller tube, a screen, a bar, two arms, and the electromechanical actuator. One end of the screen is attached to the roller tube. The other end of the screen is attached to the bar. One end of each arm is attached to a supporting structure of the blinding device. The other end of each arm is attached to the bar. The arms are configured to be folded or unfolded depending on whether the screen is rolled up or down around the roller tube.The electromechanical actuator is configured to wind and unwind the screen around the winding tube, and to bend and unbend the arms, between an upper and lower limit positions of the bar. The arms have a break position. This break position is located between the lower and upper limit positions of the bar. The electromechanical actuator comprises an electric motor, an output shaft, and a control unit. The output shaft is connected to the winding tube. The process includes a step of winding the screen from the lower limit position of the bar using the electromechanical actuator.

[0007] We also know of document EP 2 186 989 A2, which describes a process similar to that described in document FR 2 816 465 A1. The torque supplied by the electromechanical actuator is determined indirectly by measuring the rotational speed of the motor shaft using two Hall effect sensors that cooperate with the motor shaft magnet. The control unit thus monitors the motor shaft's rotational speed by determining its period of revolution, thereby determining the screen's position. Figure 3a of document EP 2 186 989 A2 illustrates the evolution of the torque value over time during a screen's upward movement. The crossing of the breaking position of the arms is illustrated, by means of the box in zone B3, by the peak of a torque value supplied by the electromechanical actuator following the start of the electromechanical actuator, from the lower end position of the screen.

[0008] In the case of these two shading devices, the moment when the torque value to be supplied by the electromechanical actuator is maximum corresponds to crossing the breaking position of the arms, from the lower end-of-stroke position of the bar or from a position of the bar located between the lower end-of-stroke position of the bar and the breaking position of the arms.

[0009] In Figure 7 of this application, the graph illustrates by a first curve, presenting symbols in the shape of a circle, the evolution of a value of torque C supplied by the electromechanical actuator of the prior art, as a function of time t, and by a second curve, presenting symbols in the shape of a diamond, the evolution of a value of rotational speed V of the output shaft, as a function of time t.

[0010] Figure 7 is the characteristic representation of the evolution of the value of the torque C delivered by the electromechanical actuator and of the evolution of the value of the rotation speed V of the output shaft, as a function of time t, during the winding of the screen from the lower end position of the bar to the upper end position of the bar.

[0011] Time t is represented on the x-axis, the value of torque C supplied by the electromechanical actuator is represented on the y-axis on the left of Figure 7 and the value of rotational speed V of the output shaft is represented on the y-axis on the right of Figure 7.

[0012] The crossing of the arm breaking position is illustrated in Figure 7 by the peak in the torque value supplied by the electromechanical actuator following its start-up, from the lower limit position of the bar. Thus, when crossing the arm breaking position from the lower limit position of the bar, or from a bar position between the lower limit position and the arm breaking position, the control unit supplies electrical energy to the electric motor with a power output reaching its maximum value.This maximum power value is taken into consideration for the sizing of the electric motor, a power supply module for the control unit and, possibly, a battery and a photovoltaic panel, when these form the source of electrical power supply for the electromechanical actuator.

[0013] However, this control method has the disadvantage of implementing, during the screen winding stage, a control step of the electromechanical actuator to a nominal rotation speed setpoint Vn of the output shaft as soon as the electromechanical actuator starts, as illustrated in figure 7.

[0014] Thus, the breaking position of the arms is crossed by commanding the electromechanical actuator so as to apply the nominal rotation speed setpoint Vn of the output shaft.

[0015] Therefore, the breaking position of the arms is crossed following the attainment of the nominal rotational speed setpoint Vn of the output shaft, as illustrated in figure 7.

[0016] In this way, the electromechanical actuator and, possibly, its electrical power supply are defined for a required power value according to the starting point of the screen winding stage.

[0017] Here, the maximum power value therefore corresponds to a nominal torque value associated with a nominal rotational speed value Vn of the output shaft.

[0018] Therefore, the maximum power consumption and the average power consumption during the screen winding stage are high and, in particular, unfavorable to the use of an electrical power supply for the electromechanical actuator consisting of a battery and, possibly, a photovoltaic panel.

[0019] In addition, the start-up of the electromechanical actuator, during the screen winding stage, implemented at the nominal rotational speed setpoint Vn of the output shaft, generates a jolt S of the screen during and following the crossing of the breaking position of the arms.

[0020] The screen jolt S corresponds to a moment when a screen material relaxes. This screen jolt S is visible in Figure 7 and is highlighted by strong variations in the output shaft's rotational speed during and after passing through the arm break position. The time period of the screen jolt S is enclosed by a solid line in Figure 7.

[0021] The S-type shock tends to reduce the lifespan of the electromechanical actuator and necessitates sizing the actuator to withstand this shock, which tends to increase its cost. Furthermore, this shock results in a transient voltage fault in the screen, leading to an apparent quality defect in the shading device.

[0022] The present invention aims to resolve the aforementioned drawbacks and to propose a method for controlling the operation of an electromechanical actuator for a shading device, an electromechanical actuator for a shading device, and a shading device comprising such an electromechanical actuator, making it possible to reduce the maximum power value consumed by the electromechanical actuator during the winding stage, to avoid or limit a jolt of the screen when crossing the breaking position of the arms, and to minimize the cost of obtaining the electromechanical actuator and, possibly, its source of electrical power, when the latter consists of a battery and, possibly, a photovoltaic panel.The present invention also aims to extend the life of the electromechanical actuator, without increasing its cost price, and to improve the perceived quality of the shading device.

[0023] In this respect, the present invention relates, according to a first aspect, to a method for controlling the operation of an electromechanical actuator for a blackout device, the blackout device comprising at least:

[0024] - a winding tube,

[0025] - a screen, one end of which is fixed to the winding tube,

[0026] - a bar, with one end of the screen attached to the bar,

[0027] - at least two arms, one end of each arm being fixed to a supporting structure of the shading device, the other end of each arm being fixed to the bar, the arms being configured to be folded or unfolded depending on the winding or unwinding of the screen around the winding tube, and

[0028] - the electromechanical actuator, the electromechanical actuator being configured to wind and unwind the screen around the winding tube, as well as to bend and unbend the arms, between an upper limit position of the bar and a lower limit position of the bar, the arms having a break position, the break position of the arms being located between the lower limit position of the bar and the upper limit position of the bar, the electromechanical actuator comprising at least:

[0029] - an electric motor,

[0030] - an output shaft, the output shaft being connected to the winding tube, and

[0031] - a control unit, the process comprising at least:

[0032] - a screen winding step, from the lower end position of the bar or from a position of the bar located between the lower end position of the bar and the breaking position of the arms, by means of the electromechanical actuator.

[0033] According to the invention, the method further comprises, at least during the screen winding step, a first step of controlling the electromechanical actuator according to a speed ramp from a first setpoint value of the output shaft's rotation speed to a second setpoint value of the output shaft's rotation speed, the second setpoint value of the rotation speed being strictly greater than the first setpoint value of the rotation speed, so as to cross the breaking position of the arms at a value of the output shaft's rotation speed located between the first setpoint value of the rotation speed and the second setpoint value of the rotation speed.

[0034] Thus, the control method makes it possible to reduce the maximum power consumption of the electromechanical actuator during the winding stage, to avoid or limit screen jolts when the arms reach the breaking position, and to minimize the cost of obtaining the electromechanical actuator and, potentially, its power supply when this consists of a battery and, possibly, a photovoltaic panel. The control method also extends the lifespan of the electromechanical actuator without increasing its cost and improves the perceived quality of the shading device.

[0035] In this way, the first control step allows the electromechanical actuator to be controlled by applying an upward rotation speed ramp, from the lower end position of the bar or from a position of the bar located between the lower end position of the bar and the breaking position of the arms.

[0036] Therefore, the breaking position of the arms is crossed by commanding the electromechanical actuator so as to apply a rotational speed setpoint of the output shaft located between the first rotational speed setpoint value and the second rotational speed setpoint value.

[0037] In this way, the breaking position of the arms is crossed at a rotational speed of the output shaft which is strictly greater than the first rotational speed setpoint value but strictly less than the second rotational speed setpoint value.

[0038] According to an advantageous feature of the invention, the method further comprises, during the screen winding step and following the first electromechanical actuator control step, a second electromechanical actuator control step to the second rotation speed setpoint value, the second rotation speed setpoint value being implemented after the breaking position of the arms has been crossed.

[0039] According to another advantageous feature of the invention, the rotation speed ramp is defined by a predetermined duration for the transition from the first rotation speed setpoint value to the second rotation speed setpoint value.

[0040] Alternatively, the rotation speed ramp is defined by learning the evolution of a value of at least one quantity during the winding of the screen, for the passage from the first rotation speed setpoint value to the second rotation speed setpoint value.

[0041] According to another advantageous feature of the invention, the first output shaft speed setpoint is a minimum output shaft speed setpoint. Furthermore, the second output shaft speed setpoint is a nominal output shaft speed setpoint.

[0042] The present invention relates, according to a second aspect, to an electromechanical actuator for a blackout device, according to the invention and as mentioned above.

[0043] According to the invention, the control unit is configured to implement the process, in particular the steps of the process, according to the invention and as mentioned above.

[0044] This electromechanical actuator has characteristics and advantages similar to those described previously in relation to the process according to the invention.

[0045] According to an advantageous feature of the invention, the electric motor is of the electronically commutated brushless type.

[0046] The present invention relates, according to a third aspect, to an occultation device, in accordance with the invention and as mentioned above.

[0047] According to the invention, the electromechanical actuator conforms to the invention and as mentioned above.

[0048] This occultation device has characteristics and advantages similar to those described above, in relation to the method according to the invention and the electromechanical actuator according to the invention.

[0049] According to an advantageous feature of the invention, the shading device further comprises an electrical power supply device, the electrical power supply device forming a power source for the electromechanical actuator. Furthermore, the electrical power supply device comprises at least one battery.

[0050] According to another advantageous feature of the invention, the electrical power supply device further comprises at least one photovoltaic panel, the photovoltaic panel being electrically connected to the battery.

[0051] Other features and advantages of the invention will become apparent in the following description, made with reference to the accompanying drawings, given by way of non-limiting examples and in which:

[0052] [Fig 1] Figure 1 is a schematic perspective view of a blackout installation according to an embodiment of the invention, the blackout installation comprising a blackout device according to the invention;

[0053] [Fig 2] Figure 2 is a schematic perspective view of the blackout installation illustrated in Figure 1, where a box of the blackout device has been removed and where a screen of the blackout device is shown partially transparent;

[0054] [Fig 3] Figure 3 is a schematic axial and partial cross-sectional view of the blackout installation illustrated in Figures 1 and 2, showing an electromechanical actuator of a motorized drive device for the blackout device;

[0055] [Fig 4] Figure 4 is a block diagram of a method, according to the invention, for controlling the operation of the electromechanical actuator illustrated in Figure 3;

[0056] [Fig 5] Figure 5 is a first graph representing, on the one hand, the evolution of a value of a torque supplied by the electromechanical actuator and, on the other hand, the evolution of a value of a rotation speed of an output shaft of the electromechanical actuator as a function of time, when the control method according to the invention, as represented in Figure 4, is implemented;

[0057] [Fig 6] Figure 6 is a second graph representing the evolution of the power consumed by the electromechanical actuator as a function of time, when the control method according to the invention, as shown in Figure 4, is implemented; and

[0058] [Fig 7] Figure 7 is a third graph analogous to the first graph, when a prior art control method, as described in the introductory part of the description, is implemented.

[0059] First, with reference to Figures 1 and 2, a shading system 1 conforming to an embodiment of the invention is described. This shading system 1 comprises at least one shading device 3. This shading system 1, installed in a building (not shown), includes at least one opening (not shown) in which a window or door (not shown) is located. This shading system 1 is equipped with at least one screen 2 belonging to the shading device 3, in particular a motorized arm blind. The shading device 3 may advantageously be positioned above a terrace or balcony. The screen 2 of the shading device 3 serves to partially or fully obscure the opening, a wall of the building, and / or a surface of the terrace or balcony.

[0060] A sun protection system is an example of a shading system. Similarly, a sun protection device is an example of a shading device.

[0061] The installation of shading or sun protection is subsequently referred to as "shading installation" 1.

[0062] The shading or sun protection device is hereafter referred to as the "shading device" 3. The shading device 3 includes the screen 2.

[0063] With reference to figures 1 and 2, a blind with arms conforming to the embodiment of the invention is described.

[0064] The shading device 3 includes a motorized drive device 5. The motorized drive device 5 includes an electromechanical actuator 11 illustrated in figure 3.

[0065] The screen 2 is configured to be moved, in other words is moved, by means of the motorized drive device 5 and, more particularly, of the electromechanical actuator 11.

[0066] Here, screen 2 is formed by a canvas.

[0067] Advantageously, the canvas forming screen 2 is made from a textile material.

[0068] Advantageously, the fabric forming screen 2 is designed to be waterproof and airtight, in other words, resistant to rain and wind.

[0069] Advantageously, the shading device 3, in particular the motorized drive device 5, 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.

[0070] Thus, the screen 2 of the occultation 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.

[0071] In this way, screen 2 is mobile between a rolled-up position, particularly high, and an unrolled position, particularly low, and vice versa.

[0072] The screen 2 of the shading device 3 is a 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.

[0073] The electromechanical actuator 11 is, for example, of the tubular type. This 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.

[0074] In an assembled state of the occulting device 3, the electromechanical actuator 11 is inserted into the winding tube 4.

[0075] The occultation device 3 further includes a bar 8.

[0076] Screen 2 comprises a first end 2a and a second end 2b, the second end 2b being opposite the first end 2a.

[0077] The first end 2a of the screen 2, in particular the upper end of the screen 2 in an assembled configuration of the blackout device 3 in the blackout installation 1, is fixed to the winding tube 4. In addition, the second end 2b of the screen 2, in particular the lower end of the screen 2 in the assembled configuration of the blackout device 3 in the blackout installation 1, is fixed to the bar 8.

[0078] The occultation device 3 further comprises two arms 6. Only one of the two arms 6 is visible in figure 1, the other of the two arms 6 being masked by the screen 2.

[0079] Alternatively, not shown, the occultation device 3 includes a number of arms 6 greater than two, particularly depending on the dimensions of the screen 2.

[0080] The arms 6 are configured to be folded or unfolded, in other words, are folded or unfolded, depending on the winding or unwinding of the screen 2 around the winding tube 4.

[0081] Thus, the arms 6 are articulated to allow the screen 2 to be wound and unwound around the winding tube 4.

[0082] Advantageously, each arm 6 comprises at least a first arm segment 6a and a second arm segment 6b. Each of the first and second arm segments 6a, 6b comprises a first end and a second end, the second end being opposite the first end. The second end of the first arm segment 6a is connected to the first end of the second arm segment 6b, in particular via a joint 7.

[0083] In this way, the joint 7 of each arm 6 is arranged between the first and second arm segments 6a, 6b.

[0084] Here, the joint 7 is located in the central part of each arm 6, so as to allow the first and second arm segments 6a, 6b to pivot relative to each other around an axis of rotation, not shown.

[0085] We denote a as an angle defined between the first and second arm segments 6a, 6b.

[0086] The occultation device 3 further comprises a supporting structure 10.

[0087] Advantageously, a first end of each arm 6, in particular the first end of the first arm segment 6a, in other words the upper end of each of the arms 6 in the assembled configuration of the shading device 3 in the shading installation 1, is fixed to the supporting structure 10. In addition, a second end of each arm 6, in particular the second end of the second arm segment 6b, in other words the lower end of each of the arms 6 in the assembled configuration of the shading device 3 in the shading installation 1, is fixed to the bar 8.

[0088] Advantageously, the load-bearing structure 10 is configured to be fixed, in other words is fixed, to a wall of the building, in particular in the assembled configuration of the shading device 3 in the shading installation 1.

[0089] Advantageously, the fixing of the load-bearing structure 10 to the wall of the building is implemented by means of screw fixing elements.

[0090] Here and as illustrated in figure 1, the supporting structure 10 includes at least one box 9.

[0091] Alternatively or in addition, the supporting structure 10 includes a support 22 disposed at each of the two ends of the winding tube 4, as illustrated in figure 2.

[0092] Advantageously, the box 9 includes two cheeks, not shown. One cheek is disposed, or rather configured to be disposed, at each end of the box 9 and at each end of the winding tube 4, in particular in an assembled configuration of the blackout device 3.

[0093] Thus, the winding tube 4 is held by means of the box 9, in particular by means of the sides of the box 9 and / or by means of the supports 22. In this way, the box 9 and / or the supports 22 make it possible to mechanically link the shading device 3 to the structure of the building, in particular to a wall of the building.

[0094] Advantageously, the winding tube 4 is disposed, or is configured to be disposed, inside the box 9, particularly in the assembled configuration of the blackout device 3. Furthermore, the screen 2 is housed, or is configured to be housed, at least in part inside the box 9, particularly in the assembled configuration of the blackout device 3.

[0095] In general, the box 9 is positioned, or rather configured to be positioned, above the opening provided in the building, in particular in the assembled configuration of the shading device 3 in the shading installation 1.

[0096] Advantageously, each arm 6 also includes a spring, not shown, so that the screen 2 unfolds under the effect of the springs. The spring of each arm 6 is compressed when the arms 6 are in the folded position.

[0097] Advantageously, the spring is arranged inside the joint 7.

[0098] Advantageously, each arm 6 also includes an adjustable stop mechanism, not shown.

[0099] Thus, this arm stop mechanism 6 makes it possible to limit the maximum angular displacement of the first arm segment 6a relative to the second arm segment 6b. The value of the maximum angular displacement of the first arm segment 6a relative to the second arm segment 6b is advantageously strictly less than 180° and, preferably, strictly less than 150°.

[0100] In one embodiment, not shown, the first end 2a of the screen 2 has a hem through which a rod, in particular made of plastic, is inserted. This hem at the first end 2a of the screen 2 is created by stitching the fabric forming the screen 2. When assembling the screen 2 onto the winding tube 4, the hem and the rod at the first end 2a of the screen 2 are slid into a groove on the outer face of the winding tube 4, in particular along the entire length of the winding tube 4, so that the screen 2 can be wound and unwound around the winding tube 4.

[0101] The method of attaching the screen 2 to the roller tube 4 is not limiting and may vary. It may be implemented, for example, by means of one or more straps or one or more joints attached, in particular by screwing or riveting, to the roller tube 4.

[0102] Here, the screen 2 and the arms 6 are configured to be moved, by means of the motorized drive device 5 and, more particularly, of the electromechanical actuator 11, between a high position, corresponding to the rolled-up position of the screen 2 and folded-up position of the arms 6 and which can also be called the first end-of-stroke position of the bar 8 or the high end-of-stroke position of the bar 8, and a low position, corresponding to the unrolled position of the screen 2 and unrolled position of the arms 6 and which can also be called the second end-of-stroke position of the bar 8 or the low end-of-stroke position of the bar 8.

[0103] Here, each arm 6 has a so-called break position, which can also be called the locking position. The break position of the arms 6 is located between the lower end position of the bar 8 and the upper end position of the bar 8. This break position corresponds to a position of the shading device 3 in which the arms 6 reach their maximum extension and where the tension of the screen 2 switches from a tensed state to a slack state, or vice versa.

[0104] The breaking position of the arms 6 of the occulting device 3 can also be defined as a position in which the torque delivered by the electromechanical actuator 11 takes a maximum value, when the screen 2 is unrolled or when the screen 2 is wound around the winding tube 4.

[0105] Here, the upper limit position corresponds to the bar 8 being pressed against an edge of the housing 9 or to the bar 8 stopping in a programmed position. Furthermore, the lower limit position corresponds to the bar 8 stopping in a programmed position, specifically beyond the arm break position 6, in which the screen 2 is taut.

[0106] Thus, the electromechanical actuator 11 is configured to drive, in other words drives, the screen 2 in movement, between the upper end position and the lower end position, and vice versa.

[0107] Advantageously, the motorized drive device 5 is controlled by a control unit. The control unit can be, for example, a local control unit 12 or a central control unit 13, as illustrated in Figure 2.

[0108] Advantageously, the local control unit 12 can be connected, via wired or wireless connection, to the central control unit 13.

[0109] 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.

[0110] The motorized drive device 5 is preferably configured to execute the commands to unroll or roll up the screen 2 of the blackout device 3, which may be issued, in particular, by the local control unit 12 or the central control unit 13. The blackout installation 1 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.

[0111] Control means for the electromechanical actuator 11, enabling the movement of the screen 2 of the occulting device 3, include at least one control unit 15, in particular an electronic control unit.

[0112] This control unit 15 belongs to the motorized drive device 5 and, more particularly, to the electromechanical actuator 11. It is capable of starting up an electric motor 16 of the electromechanical actuator 11 and, in particular, of enabling the supply of electrical energy to the electric motor 16.

[0113] Thus, the control unit 15 controls, in particular, the electric motor 16, so as to raise or lower the screen 2, as described previously.

[0114] The control means for the electromechanical actuator 11 include hardware and / or software means.

[0115] As a non-limiting example, the hardware may include at least one microcontroller 31, as illustrated in Figure 3.

[0116] Advantageously, the control unit 15 further includes a first communication module 27, as illustrated in Figure 3, 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.

[0117] Advantageously, the first communication module 27 of the control unit 15 is wireless. In particular, the first communication module 27 is configured to receive radio control commands.

[0118] Advantageously, the first communication module 27 can, as a complement or alternative, allow the reception of command orders transmitted by wired means.

[0119] Advantageously, the 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.

[0120] Advantageously, the 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 Figure 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.

[0121] The control unit 15 can be operated from the local control unit 12 and / or the central control unit 13. The local control unit 12 and / or the central control unit 13 is equipped with a control keypad. The control keypad of the local control unit 12 or the central control unit 13 includes one or more selection elements 14 and, optionally, one or more display elements 34.

[0122] By way of non-limiting examples, selection elements may include push buttons and / or touch-sensitive keys. Display elements may include light-emitting diodes and / or a display, for example LCD (Liquid Crystal Display) or TFT (Thin Film Transistor). Selection and display elements may also be implemented using a touchscreen.

[0123] Advantageously, the local control unit 12 and / or the central control unit 13 includes at least one second communication module 36.

[0124] Thus, the second communication module 36 of the local control unit 12 or of the 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.

[0125] In addition, the second communication module 36 of the local control unit 12 or of the central control unit 13 can also be configured to receive, in other words receives, control orders, in particular through the same means.

[0126] Advantageously, the second communication module 36 of the local control unit 12 or of the central control unit 13 is configured to communicate, in other words, communicates, with the first communication module 27 of the control unit 15.

[0127] Thus, the second communication module 36 of the local control unit 12 or of the central control unit 13 exchanges control orders with the first communication module 27 of the control unit 15, either unidirectionally or bidirectionally.

[0128] Advantageously, the local control unit 12 is a control point, which can be fixed or mobile. A fixed control point can be a control box intended to be mounted on a building wall or on the face of a window or door frame. A mobile control point can be a remote control, a smartphone, or a tablet.

[0129] Advantageously, the local control unit 12 and / or the central control unit 13 further includes a controller 35.

[0130] The motorized drive device 5, in particular the control unit 15, is preferably configured to execute movement commands, in particular unwinding or rewinding, of the screen 2 of the shading device 3. These commands can be issued, in particular, by the local control unit 12 or by the central control unit 13.

[0131] When a command to unwind the screen 2 is received by the control unit 15, the electromechanical actuator 11 rotates the winding tube 4 in a first direction, called the unfolding of the screen 2, and releases the arms 6, so as to unfold them, in particular under the action of the springs.

[0132] When a command to wind the screen 2 is received by the control unit 15, the electromechanical actuator 11 rotates the winding tube 4 in a second direction, opposite to the first direction, called the folding of the screen 2, and folds the arms 6, in particular by compressing the springs.

[0133] The control unit 15 is configured to stop the electromechanical actuator 11, following the receipt of a stop command issued by one of the control units 12, 13, or following the determination of the attainment of one of the lower end positions of the bar 8, in other words of complete unwinding of the screen 2, or upper end position of the bar 8, in other words of complete winding of the screen 2.

[0134] The motorized drive device 5 can be controlled by the user, for example by receiving a command order corresponding to a press on the or one of the selection elements 14 of the local control unit 12 or of the central control unit 13.

[0135] Advantageously, the occultation installation 1 further includes at least one sensor, not shown.

[0136] As an addition or alternative, the sensor can be integrated into the weather station.

[0137] Advantageously, the sensor includes at least one second communication module 36, such as that described with reference to the local control unit 12 or the central control unit 13. In addition, the second communication module 36 of the sensor is configured to communicate, that is to say, communicates, with the first communication module 27 of the control unit 15.

[0138] Advantageously, the sensor can be, for example, a light sensor, a temperature sensor, a humidity sensor or a wind sensor.

[0139] Thus, the motorized drive device 5 can also be controlled automatically by receiving a command order corresponding to at least one signal from the sensor.

[0140] In addition or alternatively, the motorized drive device 5 can also be controlled automatically by receiving a command order corresponding to at least one signal from a clock, not shown, of the control unit 15, in particular the microcontroller 31.

[0141] In addition or as an alternative, the sensor and / or the clock can be integrated into the local control unit 12 or the central control unit 13.

[0142] We now describe in more detail and with reference to Figure 3 the motorized drive device 5, including the electromechanical actuator 11, belonging to the shading installation 1 and, more particularly, to the shading device 3 illustrated in Figures 1 and 2.

[0143] The electromechanical actuator 11 includes the electric motor 16.

[0144] The electric motor 16 is represented by its casing in figure 3, without details on its internal constituent elements.

[0145] Advantageously, the electric motor 16 is housed, in other words mounted, inside a casing 17, particularly in an assembled configuration of the electromechanical actuator 11.

[0146] Advantageously, the electric motor 16 comprises a rotor and a stator, not shown and positioned coaxially around the axis of rotation X, which is also the axis of rotation of the winding tube 4 in the mounted configuration of the motorized drive device 5.

[0147] Here, the electric motor 16 is of the electronically commutated brushless type, also called "BLDC" (acronym for the Anglo-Saxon term BrushLess Direct Current) or "permanent magnet synchronous".

[0148] Advantageously, the electric motor 16, in particular the rotor, includes a shaft, not shown.

[0149] Advantageously, the electromechanical actuator 11 further includes a reducer 19.

[0150] The reducer 19 is coupled, in other words is configured to be coupled, with the electric motor 16, in particular in the assembled configuration of the electromechanical actuator 11.

[0151] Advantageously, the electromechanical actuator 11 also includes a torque transmission device, not shown. Here, the torque transmission device consists of a single-piece component, which can also be called a universal joint.

[0152] Here, an input shaft, not shown, of the reducer 19 is coupled, in other words is configured to be coupled, with the shaft of the electric motor 16 via the torque transmission device, in particular in the assembled configuration of the electromechanical actuator 11.

[0153] Advantageously, the reducer 19 comprises one or more reduction stages, not shown. The reduction stage, one of the reduction stages, or each reduction stage may be of the epicyclic type.

[0154] The number of reduction stages in the reducer is not limited. The number of reduction stages can be one, two, or three or more.

[0155] Advantageously, the electromechanical actuator 11 further comprises the housing

[0156] 17, in particular tubular.

[0157] Advantageously, the reducer 19 and the torque transmission device are housed, in other words mounted, inside the casing 17, particularly in the assembled configuration of the electromechanical actuator 11.

[0158] Here, 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.

[0159] 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.

[0160] Advantageously, the housing 17 is a tube with a circular cross-section.

[0161] Here, the housing 17 is made of a metallic material.

[0162] The material of the electromechanical actuator housing is not limited and can vary. In particular, it can be a plastic material.

[0163] Advantageously, the electromechanical actuator 11 further includes a crown 30, which can also be called a sleeve.

[0164] The crown 30 is disposed, or rather 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.

[0165] Advantageously, the motorized drive device 5 and, more particularly, the electromechanical actuator 11 further comprises an electrical power cable

[0166] 18, as illustrated in Figure 3. Advantageously, the control unit 15 can be supplied with electrical power by means of the power supply cable 18. The power supply cable 18 is electrically connected to at least one source of electrical power supply.

[0167] In one embodiment, the electrical power supply source is a battery 24, which can be recharged, in particular by means of a photovoltaic panel 25 and / or a charger, not shown, or through an electrical power supply network, not shown.

[0168] As an alternative or supplement, not shown, the source of electrical power supply is a mains electrical power supply network.

[0169] In another variant or as a complement, not shown, the source of electrical power is a power supply network called "PoE" (acronym for the Anglo-Saxon term Power over Ethernet), in other words a power supply network via Ethernet cable.

[0170] Advantageously, the control unit 15 further includes a circuit, not shown, for rectifying an alternating voltage from the electrical power supply source.

[0171] Advantageously, the control unit 15 further includes a power supply module, not shown. The power supply module supplies electrical energy, that is to say, is configured to supply electrical energy sequentially to coils, not shown, of the electric motor 16, so as to produce a rotating electromagnetic field causing the rotor of the electric motor 16 to rotate.

[0172] Advantageously, the power supply module is electrically connected to a DC voltage source +Vbus. The value of the DC voltage +Vbus is defined relative to a reference voltage Gnd.

[0173] Advantageously, the power supply module includes switches to achieve sequential power supply to the coils.

[0174] Here, the switches of the power supply module are "MOSFET" type transistors (acronym for the English term Metal Oxide Semiconductor Field Effect Transistor) and there are six of them.

[0175] The type and number of switches in the power supply module are not limited. In particular, the switches in the power supply module can be IGBT type transistors (Insulated Gate Bipolar Transistor).

[0176] Advantageously, the occulting device 3 and, more particularly, the motorized drive device 5 further comprises an electrical power supply device 26, visible in Figure 3. The electrical power supply device 26 forms, in other words, is, the source of electrical power supply for the electromechanical actuator 11 and, in particular, for at least the control unit 15 and the electric motor 16.

[0177] Here, the electromechanical actuator 11 is electrically connected to the electrical power supply device 26.

[0178] The electrical power supply device 26 is configured to supply, in other words provides, electrical power to the electromechanical actuator 11 and, more particularly, to the control unit 15 and the electric motor 16.

[0179] In an example embodiment illustrated in Figure 2, the electrical power supply device 26 includes at least the battery 24.

[0180] 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.

[0181] Advantageously, the electrical power supply device 26 further comprises at least the photovoltaic panel 25. In addition, the photovoltaic panel 25 is electrically connected to the battery 24.

[0182] Advantageously, 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.

[0183] The battery 24 is configured to power, in other words supplies, electrical energy to the electromechanical actuator 11, in particular the control unit 15 and the electric motor 16.

[0184] Advantageously, battery 24 is configured to be powered, in other words is supplied, with electrical energy by photovoltaic panel 25.

[0185] Thus, the battery 24 is recharged by solar energy, using the photovoltaic panel 25.

[0186] In the embodiment illustrated in Figure 3, battery 24 is located outside the box 9.

[0187] Alternatively, not shown, the battery 24 can be disposed at the level of the box 9, in particular inside the box 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 the latter case, the electromechanical actuator 11 includes the battery 24.

[0188] Here, the electromechanical actuator 11 includes the power cable 18 enabling its supply of electrical energy, including the power supply of the control unit 15 and the power supply of the electric motor 16, in particular from the battery 24.

[0189] Here, battery 24 is electrically connected directly to control unit 15, via power cable 18.

[0190] Thus, the power supply cable 18 allows the electromechanical actuator 11, in particular the control unit 15 and the electric motor 16, to be supplied with electrical energy from the source(s) of electrical power supply.

[0191] Advantageously, the electromechanical actuator 11 further comprises an output shaft 20.

[0192] The output shaft 20 is disposed, or rather configured to be disposed, in the vicinity of the second end 17b of the housing 17, particularly in the assembled configuration of the electromechanical actuator 11.

[0193] 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.

[0194] Advantageously, one end of the output shaft 20 of the electromechanical actuator 11 is projecting from the housing 17 of the electromechanical actuator 11, in particular from the second end 17b of the housing 17.

[0195] Advantageously, the output shaft 20 of the electromechanical actuator 11 is configured to drive, or in other words, rotate, a connecting element 39. This connecting element 39 is linked to the winding tube 4, particularly in the assembled configuration of the shading device 3. The connecting element 39 is, for example, in the form of a wheel. This connecting element 39 is rotationally fixed, about the axis of rotation X, to both the output shaft 20 and the winding tube 4.

[0196] When the electromechanical actuator 11 is switched on, the electric motor 16 and the reducer 19 drive the output shaft 20 of the electromechanical actuator 11 in rotation around the axis of rotation X. In addition, the output shaft 20 of the electromechanical actuator 11 drives the winding tube 4 in rotation around the axis of rotation X via the connecting element 39.

[0197] Thus, the winding tube 4 causes the screen 2 of the occultation device 3 to rotate, so as to unroll or roll up the screen 2.

[0198] Advantageously, the electromechanical actuator 11 further includes a brake 29.

[0199] The brake 29 is configured to brake and / or to lock the output shaft 20 in rotation, so as to regulate the rotational speed of the winding tube 4, during a movement of the screen 2, and to keep the winding tube 4 locked, when the electromechanical actuator 11 is electrically deactivated.

[0200] Advantageously, the brake 29 is housed, in other words mounted, inside the casing 17 of the electromechanical actuator 11, particularly in the assembled configuration of the electromechanical actuator 11.

[0201] Here, brake 29 is a spring brake.

[0202] Alternatively, not shown, brake 29 is a magnetic brake, a cam brake or an electromagnetic brake.

[0203] Here and as can be seen in figure 3, the brake 29 is configured to be disposed, in other words is disposed, in particular in the assembled configuration of the electromechanical actuator 11, between the electric motor 16 and the reducer 19, that is to say at the output of the electric motor 16.

[0204] Alternatively, not shown, the brake 29 is configured to be disposed, in other words is disposed, in particular in the assembled configuration of the electromechanical actuator 11, between the control unit 15 and the electric motor 16, in other words at the input of the electric motor 16, 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 the reducer 19.

[0205] Advantageously, the electromechanical actuator 11 further includes a device for detecting end-of-travel and / or obstacle conditions during the movement of the screen 2. This device for detecting end-of-travel and / or obstacle conditions can be mechanical or electronic.

[0206] Advantageously, the limit switch and / or obstacle detection device is implemented by means of the microcontroller 31 of the control unit 15 and, in particular, by means of an algorithm implemented by this microcontroller 31.

[0207] The winding tube 4 is driven in rotation around the axis of rotation X and the housing 17 of the electromechanical actuator 11, supported by two pivot joints. The first pivot joint is formed 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 formed at the other end of the winding tube 4, opposite the first end.

[0208] The crown 30 forms, in other words is configured to form or constitute, a rotational guide bearing for the winding tube 4, in particular in the assembled configuration of the occulting device 3.

[0209] Advantageously, the electromechanical actuator 11 further includes a torque support 21. Here, the torque support 21 is disposed at the first end 17a of the housing 17 of the electromechanical actuator 11, particularly in the assembled configuration of the electromechanical actuator 11.

[0210] 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. The torque support 21 also advantageously 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 transferred to the building structure.

[0211] Thus, the torque support 21 allows the electromechanical actuator 11 to be fixed on a frame, in particular to one of the sides of the box 9 or to one of the supports 22.

[0212] Advantageously, the torque support 21 protrudes at the first end 17a of the housing 17.

[0213] 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.

[0214] Furthermore, the torque support 21 of the electromechanical actuator 11 can support at least part of the control unit 15.

[0215] Advantageously, the torque support 21 is fixed, or rather configured to be fixed, to the housing 17 by means of one or more fixing elements, not shown, particularly in the assembled configuration of the electromechanical actuator 11. The fixing element(s) may be, in particular, bosses, fixing screws, elastic snap-fit ​​fixing elements, ribs fitted into notches or a combination of these different fixing elements.

[0216] Advantageously, the torque support 21 comprises a first part 21a, which can also be called a "fixed point", and a second part 21b, which can also be called an "actuator head".

[0217] Advantageously, the first part 21a of the torque support 21 is assembled, or rather configured to be assembled, with the housing 17, particularly in the assembled configuration of the electromechanical actuator 11. Furthermore, the second part 21b of the torque support 21 is configured to be assembled, or rather is assembled, with the box 9 or one of the supports 22, particularly in an assembled configuration of the electromechanical actuator 11 in the occulting device 3.

[0218] In the embodiment illustrated in Figure 3, the torque support 21 consists of a single piece, i.e., a single piece, forming the first and second parts 21a, 21b of the torque support 21. In another embodiment, not shown, the second part 21b of the torque support 21 is assembled, i.e., configured to be assembled, onto the first part 21a of the torque support 21, in particular in the assembled configuration of the electromechanical actuator 11. In this case, the second part 21b of the torque support 21 is assembled onto the first part 21a of the torque support 21 by means of assembly elements.

[0219] Thus, in this case, the torque support 21 consists of at least two separate parts, each forming respectively the first and second parts 21a, 21b of the torque support 21.

[0220] In this way, the second part 21b of the torque support 21 can be interchangeable with the first part 21a of the torque support 21, in particular depending on the shape and type of the retaining elements, not shown, arranged at the level of the box 9.

[0221] Advantageously, the second part 21 b of the couple support 21 can have different external shapes, including a fluted shape, known as "star-shaped", in other words including reliefs on its contour, or a round shape, in other words without reliefs on its contour, not shown.

[0222] Advantageously, at least a portion of the first part 21a of the torque support 21 is generally cylindrical in shape and is disposed, or rather configured to be disposed, inside the housing 17, particularly in the assembled configuration of the electromechanical actuator 11.

[0223] Advantageously, an outside diameter 021 of at least a portion of the second part 21b of the torque support 21 is greater than an outside diameter 017 of the housing 17.

[0224] Advantageously, the torque support 21 further includes a stop 33, as illustrated in Figure 3. In addition, the stop 33 is supported, that is to say, is configured to be supported, against the housing 17, at the level of the first end 17a of the housing 17, particularly in the assembled configuration of the electromechanical actuator 11.

[0225] Thus, the stop 33 of the torque support 21 allows the sinking of the first part 21a of the torque support 21 into the housing 17, along the direction of the axis of rotation X.

[0226] In this way, the first part 21a of the torque support 21 is arranged inside the housing 17 and the second part 21b of the torque support 21 is arranged outside the housing 17.

[0227] Here, the stop 33 of the torque support 21 includes a shoulder.

[0228] In one embodiment, as illustrated in Figure 3, the ring 30 is disposed or inserted, in other words is configured to be disposed or inserted, around a part of the housing 17, in particular in the assembled configuration of the electromechanical actuator 11. In this case, the ring 30 is mounted freely to rotate around the housing 17.

[0229] 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 the first part 21a of the torque support 21, especially 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, in particular the first part 21a of the torque support 21.

[0230] 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 of the electromechanical actuator 11, in particular the first end 17a of the housing 17, especially in the assembled configuration of the electromechanical actuator 11. In such a case, the ring 30 is mounted free to rotate, on the one hand, around the torque support 21 and, on the other hand, around the housing 17 of the electromechanical actuator 11.

[0231] Advantageously, the torque support 21 also includes a cover, not shown.

[0232] The cover is mounted, or rather configured to be mounted, on the torque support 21, in particular on the second part 21b of the torque support 21, especially in the assembled configuration of the electromechanical actuator 11.

[0233] The control unit 15 is housed, in other words mounted, at least in part inside the housing 17, particularly in the assembled configuration of the electromechanical actuator 11.

[0234] Here and as illustrated in figure 3, the control unit 15 is arranged, in other words is integrated, inside the housing 17 of the electromechanical actuator 11.

[0235] In addition or alternative, not shown, the control unit 15 is mounted partly or entirely outside the housing 17 of the electromechanical actuator 11 and, in particular, in the torque support 21 or in the box 9.

[0236] Advantageously, the control unit 15 includes at least one electronic board 15a. The electronic board or boards 15a are supplied with electrical energy by means of the power supply cable 18.

[0237] Here, the control unit 15 comprises a single electronic board 15a.

[0238] Advantageously, the torque support 21 includes, or rather integrates, at least one selection device, not shown, in particular a button, which may be, for example, of the push-button or magnetic type. Furthermore, the selection device(s) is configured, in particular, to adjust the electromechanical actuator 11 through one or more configuration modes, to pair one or more control units 12, 13 with the electromechanical actuator 11, to reset one or more parameters, which may be, for example, a limit switch position, to reset the paired control unit(s) 12, 13, or to control the movement of the screen 2.

[0239] Advantageously, the torque support 21 includes, or rather integrates, at least one display device, not shown. Furthermore, the display device(s) is configured, in particular, to display a visual indication, which may, for example, represent an operating mode of the electromechanical actuator 11, in particular a configuration mode or a control mode, or a state of a component of the motorized drive device 5.

[0240] Advantageously, when the torque support 21 includes a display device, the operating parameter that this display device allows to be viewed is a state of charge of the battery 24.

[0241] Alternatively, and not shown, the control unit 15 comprises a first electronic board 15a and a second electronic board. The first electronic board 15a is located inside the housing 17 of the electromechanical actuator 11, particularly in the assembled configuration of the electromechanical actuator 11. Furthermore, the second electronic board is located inside the torque support 21 of the electromechanical actuator 11, particularly in the assembled configuration of the electromechanical actuator 11. Advantageously, the first electronic board 15a is configured to control the electric motor 16. In addition, the second electronic board is configured to, among other things, access the parameter setting and / or configuration functions of the electromechanical actuator 11, by means of the selection device(s) and, optionally, the display device(s).

[0242] Advantageously, the electromechanical actuator 11 further includes a counting device, not shown.

[0243] The counting device is configured to cooperate, or rather cooperates, with the control unit 15. In addition, the counting device and the control unit 15 are configured to determine a position, which can be called "current", of the screen 2.

[0244] Advantageously, the control unit 15 is configured to monitor at least one signal from the counting device at a predetermined frequency, notably depending on the position of the screen 2.

[0245] In one embodiment, the counting device is of the magnetic type. In such a case, the counting device may include an encoder wheel and one or more sensors, not shown, in particular Hall effect sensors.

[0246] In one example implementation, the counting device includes two sensors.

[0247] The number of sensors is not limited and can vary. It can be, for example, one or three.

[0248] In one embodiment, the ring gear 30 has, on its inner face, teeth (not shown) configured to cooperate with a pinion (not shown) installed inside the torque support 21 or, alternatively, inside the housing 17 of the electromechanical actuator 11. In this case, the encoder wheel is connected to the pinion, in particular by means of a shaft (not shown). Thus, the teeth of the ring gear 30 are configured to drive the pinion in rotation, so as to count the number of revolutions of the winding tube 4. In this case, the teeth of the ring gear 30 and the pinion form part of the counting device.

[0249] Alternatively, not shown, the encoder wheel is connected to the shaft of the electric motor 16. In addition, the sensor or sensors are assembled on an electronic board of the control unit 15, in particular on a third electronic board or on the first electronic board 15a.

[0250] Thus, the counting device makes it possible to determine the number of revolutions made by the shaft of the electric motor 16.

[0251] Alternatively, not shown, the counting device may be without sensors. In this case, the counting device is configured to, in cooperation with the control unit 15, analyze the control signals for supplying electrical power to the electric motor 16 and determine a position, which can be called "current", of the rotor of the electric motor 16 and, consequently, of the output shaft 20 of the electromechanical actuator 11 and the winding tube 4.

[0252] Alternatively, not shown, the counting device allows the number of revolutions made by the output shaft 20 of the electromechanical actuator 11 to be determined.

[0253] The counting device also allows the direction of rotation of the winding tube 4 to be determined and / or the end-of-travel positions of the screen 2 to be managed.

[0254] The type of counting device is not limiting and can be different, in particular optical, for example an encoder equipped with one or more optical sensors, or time-based.

[0255] In the embodiment illustrated in Figure 3, the power supply cable 18 comprises a first electrical connector 37 and a second electrical connector 38. The power supply cable 18 further comprises first electrical conductors (not shown) and second electrical conductors (not shown). The first electrical conductors are electrically connected to the first electrical connector 37. The second electrical conductors are electrically connected to the second electrical connector 38. Furthermore, the first electrical connector 37 is configured to be connected, i.e., is electrically connected, to the battery 24, and the second electrical connector 38 is configured to be connected, i.e., is electrically connected, to the photovoltaic panel 25, particularly in an assembled configuration of the motorized drive device 5 and, consequently, the shading device 3.

[0256] Furthermore, the electromechanical actuator 11 also includes a radio antenna 23. In addition, the radio antenna 23 is electrically connected, or is configured to be electrically connected, to the control unit 15 and, consequently, to the first communication module 27, particularly in the assembled configuration of the electromechanical actuator 11.

[0257] Here, the radio antenna 23 is made of a wire, specifically a metallic one, which could be, for example, copper or aluminum. Furthermore, this wire is covered with electrical insulation, that is to say, it is housed in an electrical insulation sheath, which could be, for example, made of plastic.

[0258] Advantageously, the wire forming the radio antenna 23 is disposed partly outside the electromechanical actuator 11.

[0259] Here, the radio antenna 23 is an integral part of the power supply cable 18. In other words, the power supply cable 18 includes the radio antenna 23.

[0260] Alternatively, not shown, the radio antenna 23 is separate from the power supply cable 18.

[0261] In another variant, not shown, the radio antenna 23 is made using a coaxial cable.

[0262] In another variant, not shown, the radio antenna 23 is made by means of a printed circuit board, which can, for example, be integrated into one of the electronic boards, 15a or equivalent, of the control unit 15.

[0263] Advantageously, the 24 battery is rechargeable.

[0264] 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.

[0265] Advantageously, the photovoltaic panel 25 comprises a plurality of photovoltaic cells 40. In this case, the battery 24 is supplied with electrical energy by means of the photovoltaic cells 40 of the photovoltaic panel 25. The motorized drive device 5, in particular the photovoltaic panel 25 and / or the control unit 15, includes charging elements configured to charge the battery 24, using solar energy recovered by the photovoltaic panel 25. In this case, the current flows between the components 25, 24 and 15 through a wired connection, in particular provided by the electrical power supply cable 18.

[0266] Thus, the charging elements configured to charge the battery 24, from solar energy, allow the solar energy recovered by the photovoltaic panel 25 to be converted into electrical energy.

[0267] Alternatively or in addition, the motorized drive device 5, in particular the electromechanical actuator 11, is supplied with electrical energy from the battery 24, from an auxiliary battery, not shown, or from a mains power supply network, in particular from the commercial AC network, in particular depending on a state of charge of the battery 24.

[0268] Here, the electronic board 15a is configured to control the electric motor 16, to enable the charging of the battery 24 and, optionally, to access parameter settings and / or configuration functions of the electromechanical actuator 11, by means of selection and, optionally, display devices, not shown. As mentioned above, the battery charging elements 24 can be arranged on the electronic board 15a.

[0269] Alternatively, the first electronic board 15a is configured to control the electric motor 16. Furthermore, a second electronic board, not shown, is configured to allow charging of the battery 24 and, optionally, access to parameter settings and / or configuration functions of the electromechanical actuator 11, by means of selection and, optionally, display elements, also not shown. The battery charging elements for the battery 24 can be located on the second electronic board.

[0270] Advantageously, the photovoltaic panel 25 can be fixed to the box 9, to a wall of the building, to the bar 8, to a pane of glass in a window or to a fixed frame of a window.

[0271] We now describe, with reference to figure 4, a method of execution of a method, according to the invention, of controlling in operation the electromechanical actuator 11, illustrated in figure 3, for the occulting device 3, illustrated in figures 1 and 2.

[0272] In figure 5, the graph illustrates by a first curve, presenting symbols in the shape of a circle, the evolution of a value of torque C supplied by the electromechanical actuator 11, as a function of time t, and by a second curve, presenting symbols in the shape of a diamond, the evolution of a value of rotation speed V of the output shaft 20, as a function of time t.

[0273] This figure 5 is the characteristic representation of the evolution of the value of the torque C delivered by the electromechanical actuator 11 and of the evolution of the value of the rotation speed V of the output shaft 20, as a function of time t, during the winding of the screen 2 from the lower end position of the bar 8, or alternatively from a position of the bar 8 located between the lower end position of the bar 8 and the breaking position of the arms 6, up to the upper end position of the bar 8.

[0274] Time t is represented on the x-axis, the value of torque C supplied by the electromechanical actuator 11 is represented on the y-axis on the left of Figure 5 and the value of rotational speed V of the output shaft 20 is represented on the y-axis on the right of Figure 5.

[0275] In figure 6, the graph illustrates by a curve, in solid line, the evolution of a value of power P consumed by the electromechanical actuator 11, as a function of time t.

[0276] Figure 6 is the characteristic representation of the evolution of the value of the power P consumed by the electromechanical actuator 11, as a function of time t, during the winding of the screen 2 from the lower end position of the bar 8, or alternatively from a position of the bar 8 located between the lower end position of the bar 8 and the breaking position of the arms 6, up to the upper end position of the bar 8.

[0277] Time t is represented on the x-axis and the power value P consumed by the electromechanical actuator 11 is represented on the y-axis.

[0278] The crossing of the breaking position of the arms 6 is illustrated in Figure 5 by the peak of the torque value C supplied by the electromechanical actuator 11 following the start of the electromechanical actuator 11, from the lower end position of the bar 8 or from a position of the bar 8 located between the lower end position of the bar 8 and the breaking position of the arms 6. Similarly, the crossing of the breaking position of the arms 6 is illustrated in Figure 6 by the peak of the power value P consumed by the electromechanical actuator 11 following the start of the electromechanical actuator 11, from the lower end position of the bar 8 or from a position of the bar 8 located between the lower end position of the bar 8 and the breaking position of the arms 6.

[0279] The process includes a winding step E100 of the screen 2, from the lower end position of the bar 8 or from a position of the bar 8 located between the lower end position of the bar 8 and the breaking position of the arms 6, by means of the electromechanical actuator 11.During the winding step E100 of the screen 2, the process includes a first control step E11 of the electromechanical actuator 11 according to a rotation speed ramp from a first rotation speed setpoint V1 of the output shaft 20 up to a second rotation speed setpoint V2 of the output shaft 20, the second rotation speed setpoint V2 being strictly greater than the first rotation speed setpoint V1, so as to cross the breaking position of the arms 6 at a rotation speed value V of the output shaft 20 located between the first rotation speed setpoint V1 and the second rotation speed setpoint V2.

[0280] Thus, the control method makes it possible to reduce the maximum power Pmax consumed by the electromechanical actuator 11 during the winding step E100, to avoid or limit a jerk of the screen 2, in other words a phenomenon whereby the fabric forming the screen 2 is slack, when passing through the breaking position of the arms 6, and to minimize the cost of obtaining the electromechanical actuator 11, in particular the power supply module of the control unit 15, and, possibly, its power supply source, when this consists of the battery 24 and, possibly, the photovoltaic panel 25. The control method also makes it possible to extend the service life of the electromechanical actuator 11, without increasing its cost price, and to improve the perceived quality of the shading device 3.

[0281] In this way, the first control step E11 allows the electromechanical actuator 11 to be controlled by applying an upward rotation speed ramp, from the lower end position of the bar 8 or from a position of the bar 8 located between the lower end position of the bar 8 and the breaking position of the arms 6.

[0282] Therefore, the breaking position of the arms 6 is crossed by commanding the electromechanical actuator 11 so as to apply a rotation speed setpoint of the output shaft 20 located between the first rotation speed setpoint value V1 and the second rotation speed setpoint value V2.

[0283] In this way, the breaking position of the arms 6 is crossed at a rotational speed V of the output shaft 20 which is strictly greater than the first rotational speed setpoint value V1 but strictly less than the second rotational speed setpoint value V2.

[0284] In other words, the first control step E11 allows the rotation speed setpoint to be increased progressively from the first rotation speed setpoint value V1 to the second rotation speed setpoint value V2 between a start-up instant of the electric motor 16 and an instant beyond the breaking position of the arms 6.

[0285] The first control step E11 of the electromechanical actuator 11 can also be called a start control step of the electromechanical actuator 11.

[0286] The elimination or limitation of the jolt of the screen 2, when crossing the breaking position of the arms 6, makes it possible to improve the perceived quality of the occulting device 3 when starting the electromechanical actuator 11, from the lower end position of the bar 8 or from a position of the bar 8 located between the lower end position of the bar 8 and the breaking position of the arms 6.

[0287] In addition, the control method makes it possible to optimize the rotational speed V of the output shaft 20 during the winding step E100, from the lower end position of the bar 8 or from a position of the bar 8 located between the lower end position of the bar 8 and the breaking position of the arms 6, by avoiding a start of the electromechanical actuator 11 directly at the nominal rotational speed setpoint of the output shaft 20.

[0288] Advantageously, the first rotational speed setpoint value V1 of the output shaft 20 is a minimum rotational speed setpoint value of the output shaft 20. Furthermore, the second rotational speed setpoint value V2 of the output shaft 20 is a nominal rotational speed setpoint value of the output shaft 20.

[0289] Thus, the breaking position of the arms 6 is crossed at a rotation speed V of the output shaft 20 which is strictly less than the nominal rotation speed setpoint of the output shaft 20.

[0290] Advantageously, the minimum rotational speed setpoint value of the output shaft 20, defined as the first rotational speed setpoint value V1, makes it possible to guarantee the starting of the electric motor 16 without risk of damage to the latter and / or to avoid a blockage of its rotor relative to the stator.

[0291] In one example embodiment, the rotation speed ramp is defined by a predetermined time T, for the transition from the first rotation speed setpoint value V1 to the second rotation speed setpoint value V2.

[0292] The predetermined duration T is defined between a first instant t1, which is the instant when the first rotational speed setpoint value V1 is exceeded, and a second instant t2, which is the instant when the second rotational speed setpoint value V2 is reached. The first instant t1 occurs before the breaking position of arms 6 is crossed, during the execution of the winding step E100. The second instant t2 occurs after the breaking position of arms 6 is crossed, during the execution of the winding step E100.

[0293] We note te the instant at which the breaking of arms 6 takes place. The instant te is located chronologically between the first and second instants t1, t2.

[0294] Let Ve be the value of the rotational speed V at time te. The value Ve is between the first rotational speed setpoint value V1 and the second rotational speed setpoint value V2.

[0295] In the embodiment illustrated in Figure 5, the upward rotation speed ramp has a constant slope over the predetermined time T, between the first and second instants t1, t2.

[0296] As an alternative, not shown, the upward rotation speed ramp has a variable slope over the predetermined time T, between the first and second instants t1, t2.

[0297] Alternatively, the rotation speed ramp is defined by learning the evolution of a value of at least one quantity during the winding of the screen 2, for the passage from the first rotation speed setpoint value V1 to the second rotation speed setpoint value V2.

[0298] The quantity or one of the quantities used for learning may be, for example, the torque C supplied by the electromechanical actuator 11, a duration of a stroke between, on the one hand, the lower end position of the bar 8 or a position of the bar 8 located between the lower end position of the bar 8 and the breaking position of the arms 6 and, on the other hand, the upper end position of the bar 8, or a supply voltage of the electric motor 16.

[0299] Advantageously, during the winding step E100 of the screen 2 and following the first control step E11 of the electromechanical actuator 11, the process includes a second control step E12 of the electromechanical actuator 11 to the second rotational speed setpoint value V2. The second rotational speed setpoint value V2 is implemented after the breaking position of the arms 6 has been reached.

[0300] In practice, the second control step E12 starts from the second instant t2, in other words following the attainment of the second rotation speed setpoint value V2.

[0301] Here, the second control step E12 of the electric motor 16 is a control step to maintain the rotational speed setpoint of the output shaft 20 at the second rotational speed setpoint value V2.

[0302] Advantageously, prior to the first control step E11, the process includes a start-up step E10, in other words a start-up step, of the electromechanical actuator 11 to the first setpoint value of rotational speed V1 of the output shaft 20.

[0303] Thus, the E10 start-up step is implemented between an instant tO of electrical activation of the electromechanical actuator 11, in particular of the electric motor 16, and the first instant t1 of triggering of the rotation speed ramp, implemented during the first control step E11.

[0304] In this way, the start-up step E10 is a transient start-up time period of the electric motor 16, during which fluctuations in the rotational speed V of the output shaft 20 may occur.

[0305] As a non-limiting example, the transient time period is on the order of five hundred (500) milliseconds.

[0306] In practice, the electrical activation of the electric motor 16 corresponds to a switching of the switches of the power supply module of the control unit 15.

[0307] Alternatively, not shown, the first control step E11 is implemented from the instant tO of electrical activation of the electromechanical actuator 11, in other words without taking into consideration the transient time period of starting the electric motor 16.

[0308] Thus, the process is implemented by starting directly with the first command step E11, in other words by omitting the commissioning step E10.

[0309] In this way, the instant tO of electrical activation of the electromechanical actuator 11 and the first instant t1 of triggering of the rotation speed ramp are coincident.

[0310] Thanks to the present invention, the control method makes it possible to reduce the maximum power consumed by the electromechanical actuator during the winding stage, to avoid or limit screen jolts when the arms reach the breaking position, and to minimize the cost of obtaining the electromechanical actuator and, potentially, its power supply when this consists of a battery and, possibly, a photovoltaic panel. The control method also makes it possible to extend the lifespan of the electromechanical actuator without increasing its cost and to improve the perceived quality of the shading device.

[0311] Numerous modifications can be made to the embodiment examples described above, without departing from the scope of the invention as defined by the claims.

[0312] Alternatively, the electric motor 16 is a DC type. In an alternative configuration, not shown, the power supply device 26 further includes a charger. The charger is configured to be electrically connected to the battery 24, either directly to the battery or via the electromechanical actuator 11 and / or the control unit 15. The charger is configured to be plugged into a wall outlet to recharge the battery 24 from a mains power supply. This charger constitutes an external power supply.

[0313] Alternatively, and not shown, the power supply device 26 further includes an auxiliary battery, configured to recharge battery 24. The auxiliary battery is configured to be electrically connected to battery 24, either directly or via the electromechanical actuator 11 and / or the control unit 15. Thus, battery 24 can be recharged by means of the auxiliary battery, which acts as an external power source, particularly when the shading device 3 is located far from a wall outlet. Furthermore, the auxiliary battery can be used to recharge the battery of other electrical equipment, especially portable devices such as, for example, a mobile phone or a laptop computer.

[0314] Furthermore, the envisaged embodiments and variants can be combined to generate new embodiments of the invention, without departing from the scope of the invention as defined by the claims.

Claims

35 DEMANDS 1. Method for controlling the operation of an electromechanical actuator (11) for a shading device (3), the shading device (3) comprising at least: - a winding tube (4), - a screen (2), a first end (2a) of the screen (2) being fixed to the winding tube (4), - a bar (8), a second end (2b) of the screen (2) being fixed to the bar (8), - at least two arms (6), one end of each arm (6) being fixed to a supporting structure (10) of the shading device (3), the other end of each arm (6) being fixed to the bar (8), the arms (6) being configured to be folded or unfolded depending on the winding or unwinding of the screen (2) around the winding tube (4), and - the electromechanical actuator (11), the electromechanical actuator (11) being configured to wind and unwind the screen (2) around the winding tube (4), as well as to fold and unfold the arms (6), between an upper limit position of the bar (8) and a lower limit position of the bar (8), the arms (6) having a break position, the break position of the arms (6) being located between the lower limit position of the bar (8) and the upper limit position of the bar (8), the electromechanical actuator (11) comprising at least: - an electric motor (16), - an output shaft (20), the output shaft (20) being connected to the winding tube (4), and - a control unit (15), the process comprising at least: - a winding step (E100) of the screen (2), from the lower end position of the bar (8) or from a position of the bar (8) located between the lower end position of the bar (8) and the breaking position of the arms (6), by means of the electromechanical actuator (11), characterized in that the method further comprises at least: - during the winding step (E100) of the screen (2), a first control step (E11) of the electromechanical actuator (11) according to a rotation speed ramp from a first speed setpoint value of 36 rotation (V1) of the output shaft (20) up to a second rotation speed setpoint (V2) of the output shaft (20), the second rotation speed setpoint (V2) being strictly greater than the first rotation speed setpoint (V1), so as to cross the breaking position of the arms (6) at a rotation speed value (Vc) of the output shaft (20) located between the first rotation speed setpoint (V1) and the second rotation speed setpoint (V2).

2. Method for controlling in operation an electromechanical actuator (11) for a blackout device (3) according to claim 1, characterized in that the method further comprises, during the winding step (E100) of the screen (2) and following the first control step (E11) of the electromechanical actuator (11), a second control step (E12) of the electromechanical actuator (11) to the second rotation speed setpoint value (V2), the second rotation speed setpoint value (V2) being implemented after the breaking position of the arms (6) has been crossed.

3. Method of controlling in operation an electromechanical actuator (11) for a blackout device (3) according to claim 1 or according to claim 2, characterized in that the rotation speed ramp is defined by a predetermined time (T), for the transition from the first rotation speed setpoint value (V1) to the second rotation speed setpoint value (V2).

4. Method of controlling in operation an electromechanical actuator (11) for a blackout device (3) according to claim 1 or according to claim 2, characterized in that the rotation speed ramp is defined by learning the evolution of a value of at least one quantity during the winding of the screen (2), for the passage from the first rotation speed setpoint value (V1) to the second rotation speed setpoint value (V2).

5. Method for controlling in operation an electromechanical actuator (11) for a blackout device (3) according to any one of claims 1 to 4, characterized in that the first rotational speed setpoint value (V1) of the output shaft (20) is a minimum rotational speed setpoint value of the output shaft (20), and in that the second rotational speed setpoint value (V2) of the output shaft (20) is a nominal rotational speed setpoint value of the output shaft (20).

6. Electromechanical actuator (11) for a blackout device (3), the electromechanical actuator (11) comprising at least: - an electric motor (16), - an output shaft (20), the output shaft (20) being connected to the winding tube (4), and - a control unit (15), characterized in that the control unit (15) is configured to implement the process according to any one of claims 1 to 5.

7. Electromechanical actuator (11) for a blackout device (3) according to claim 6, characterized in that the electric motor (16) is of the electronically commutated brushless type.

8. Shading device (3), the shading device (3) comprising at least: - a winding tube (4), - a screen (2), a first end (2a) of the screen (2) being fixed to the winding tube (4), - a bar (8), a second end (2b) of the screen (2) being fixed to the bar (8), - at least two arms (6), one end of each arm (6) being fixed to a supporting structure (10) of the shading device (3) and the other end of each arm (6) being fixed to the bar (8), the arms (6) being configured to be folded or unfolded depending on the winding or unwinding of the screen (2) around the winding tube (4), and - an electromechanical actuator (11), the electromechanical actuator (11) being configured to wind and unwind the screen (2) around the winding tube (4), as well as to fold and unfold the arms (6), between an upper end position of the bar (8) and a lower end position of the bar (8), the arms (6) having a break position, the break position of the arms (6) being located between the lower end position of the bar (8) and the upper end position of the bar (8), characterized in that the electromechanical actuator (11) conforms to claim 6 or claim 7.

9. A blackout device (3) according to claim 8, characterized in that the blackout device (3) further comprises an electrical power supply device (26), the electrical power supply device (26) forming a source of electrical power supply for the electromechanical actuator (11), and in that the electrical power supply device (26) comprises at least one battery (24).

10. Blackout device (3) according to claim 9, characterized in that the electrical power supply device (26) further comprises at least one photovoltaic panel (25), the photovoltaic panel (25) being electrically connected to the battery (24).

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