DEVICE FOR CONTROLLING A LOCKING DEVICE IN A BUILDING

Description

DOMAINE TECHNIQUE DE L'INVENTION

[0001] The present invention relates to the field of motorized closures or blinds in a building.

[0002] Motorized closing or concealing devices in buildings can be, for example, a roller shutter for a door or window, a blind, or a garage door. The driving torque required to operate the closing or concealing device depends on the mass to be moved.

[0003] In the case of a low mass to be moved, for example for a window or door roller shutter, or for a small blind, the necessary drive torque is relatively low, less than 10 Nm. In this case, it is possible to easily use a solar electrical energy source such as a photovoltaic solar panel delivering a direct electrical voltage, which directly supplies an electrical energy storage element with direct electrical voltage, which electrical energy storage element is capable of directly supplying a direct current motor having a nominal voltage of the order of 12 V and mechanically coupled to the closing or concealing member. The system can then operate completely autonomously, requiring no cables to be installed or removed, and not requiring a power supply connected to the public electricity distribution network.

[0004] For example, document EP 3 289 691 A1 discloses a device for controlling the motorization of a closing member, in which an electrical energy accumulator, charged from photovoltaic panels, is connected to a roller shutter motor via a control circuit. The control circuit receives a signal by air transmission from a remote control. The signal is analyzed by the control circuit, which itself uses the charge of the electrical energy accumulator to power the motor according to this signal. To receive and analyze the signal, the control circuit must be permanently supplied with electrical energy from the electrical energy accumulator.

[0005] A first difficulty is that solar energy cannot be captured continuously and at a constant power, particularly during certain periods of low sunshine. This requires the use of electrical energy storage elements with oversized capacity, leading to a size that may be incompatible with housing in a motorized box for a blackout device.

[0006] This first difficulty is further increased in the case of a larger mass to be moved. For example, for a large blind or a garage door, the necessary drive torque may be much greater, well above 10 Nm. An alternating current electric motor is then used, operating at the usual supply voltage of 230 V, powered from the public electricity distribution network. The energy required requires the electrical energy storage element to be significantly oversized if autonomous operation from solar energy is desired.

[0007] To reduce the necessary size of the energy storage element, one may be tempted to reduce the consumption of the device during rest periods. One way may then be to inhibit the power supply to the electronic control and power supply circuits of the electric motor, and to reactivate these electronic circuits upon receipt of a start signal from a remote control.

[0008] But a second difficulty arises from the fact that the control signals are generally coded, to avoid unwanted actuations caused by the reception of signals from the vicinity. The code is rotating, that is to say it is modified with each control signal.

[0009] In this case, when receiving a coded control signal from a remote control, the electronic circuits controlling the electric motor, which are not powered, are not able to recognize the correct code of the control signal that allows the electric motor to start. The user must then operate the remote control several times, until the circuits recognize the code of the control signal. EXPOSE DE L'INVENTION

[0010] A problem proposed by the present invention is to design an improved device for controlling a closing or concealing member in a building, capable on the one hand of operating completely autonomously and in a small volume thanks to very low electrical energy consumption in the idle state, and capable on the other hand of recognizing the code of the control signal upon receipt without this requiring several actuations of the remote control by the user.

[0011] The invention aims, where appropriate, to ensure the above functions while using the electronic circuits usually known and present in the control of the occulting member motors for the reception and recognition of the control signal.

[0012] To achieve these and other objects, the invention proposes a device for controlling the motorization of a closing or concealing member in a building, comprising: at least one electric motor mechanically coupled to the closing or concealing member, an electrical energy source delivering a direct electrical voltage, an electronic power supply circuit, for powering the electric motor from the electrical energy source according to control orders, a main control circuit, associated with a first control signal receiver, and adapted to generate, from the control signals received, control orders addressed to the electronic power supply circuit, a remote control, adapted to generate and transmit by air the control signals to the first control signal receiver, wherein the motor control device further comprises: an auxiliary control circuit, configured to remain permanently awake and comprising a memory capable of memorizing a control signal, a control signal transceiver, configured to remain awake in a reception mode to receive a control signal from the remote control and to transmit said control signal to the auxiliary control circuit, which memorizes it, the auxiliary control circuit being further configured to establish the power supply of the main control circuit and of the electronic power supply circuit after reception and memorization of said control signal, the auxiliary control circuit being further configured to put the control signal transceiver in a transmission mode and command it to transmit, to the first control signal receiver, an identical copy of the memorized control signal,the auxiliary control circuit being further configured to return the control signal transceiver to its reception mode, and to inhibit the power supply of the main control circuit and of the electronic power supply circuit after the execution of the control orders following said control signal received on the control signal transceiver and as long as no new signal is received on the control signal transceiver.

[0013] In this way, in the absence of control signals emitted by the remote control, the motor control device remains in a standby state, in which only the auxiliary control circuit and the control signal transceiver remain powered from the electrical energy source. As a result, the electrical energy consumption is very significantly reduced, since the majority of the electronic components of the motor control circuit are kept off-power.

[0014] Furthermore, because the auxiliary control circuit and the control signal transmitter-receiver remain permanently powered, the latter are capable of receiving, recognizing and memorizing a control signal as soon as it is emitted by the remote control, without the user needing to operate the remote control several times for the control signal to be recognized by the motorization control device.

[0015] Also, because the auxiliary control circuit first causes the main control circuit to be powered, and then a copy of the stored control signal to be sent to the first control signal receiver, the first control signal receiver is able to receive and recognize the control signal frame, to generate the corresponding control commands and address them to the electronic power supply circuit which itself is also powered and can power the electric motor from the electrical energy source according to the control commands.

[0016] Finally, after the execution of the control orders, the consumption of the motor control device is reduced again, by the fact that the auxiliary control circuit puts the control signal transmitter-receiver back into its reception mode, and inhibits the power supply of the main control circuit and the electronic power supply circuit.

[0017] In practice, the auxiliary control circuit can control the transmission of said identical copy of the stored control signal to the first control signal receiver after a predetermined waiting time which is chosen to be greater than the time necessary for, after its power supply has been established, the first control signal receiver to be able to recognize the frame of said identical copy of the control signal coming from the control signal transmitter-receiver.

[0018] The auxiliary control circuit and the control signal transmitter-receiver are preferably low-consumption electronic circuits, not requiring a low-consumption standby state, which can therefore be powered continuously without this significantly affecting the autonomy of the closing or concealing member motor control device.

[0019] In practice, the auxiliary control circuit can advantageously be implemented on the basis of a programmed microcontroller.

[0020] According to a first embodiment, the control signal transmitter-receiver can be configured to transmit said identical copy of the stored control signal over the air to the first control signal receiver. In this way, a known first control signal receiver already adapted for controlling the electric motor can be used without modification.

[0021] According to a second embodiment, the control signal transceiver can be connected to the first control signal receiver by a conductive link to transmit by conduction to the first control signal receiver said identical copy of the stored control signal.

[0022] Thanks to the low standby consumption of the motor control device, it is possible to use as a source of electrical energy, according to an embodiment of the present invention, a storage battery powered from a photovoltaic solar panel, while having sufficient autonomy, and without having to oversize the storage battery to be housed in the motor box of the occulting member.

[0023] Due to the low standby consumption of the motor control device, the present invention also provides an advantage in an embodiment in which the device is powered from the electrical energy distribution network, making it possible to reduce the consumption of electrical energy.

[0024] In order to provide sufficient drive torque for the motorization of all types of occultation devices, it is advantageous to provide that: the electric motor is a low-voltage alternating current motor having an effective electrical voltage in the range between 50 and 1000 V, advantageously equal to approximately 230 V; the photovoltaic solar panel delivers a direct electrical voltage lower than the effective electrical voltage of the electric motor, the storage battery has a nominal voltage lower than said effective electrical voltage of the electric motor and higher than the direct electrical voltage delivered by the photovoltaic solar panel, a DC-DC charger converts the output electrical energy of the photovoltaic solar panel into electrical energy at the recharging electrical voltage of the storage battery, the electronic power supply circuit transforms the output electrical energy at direct electrical voltage of the storage battery into electrical energy at output alternating voltage capable of powering said electric motor.

[0025] Also, in order to optimize energy efficiency, but also in order to reduce the size of the device to allow its insertion into commonly used motor tubes, it is advantageous to provide that the electronic power supply circuit comprises two successive stages, namely on the one hand a first stage in the form of a DC-DC voltage booster converter which converts the DC electrical voltage of the storage battery into a DC output voltage at least equivalent to the peak voltage of the final voltage wave envisaged for powering the electric motor, and on the other hand a second stage in the form of a DC-AC converter which transforms the DC output voltage of the first stage into a sinusoidal AC voltage capable of powering the electric motor.

[0026] The first DC-DC stage may comprise an H-bridge of electronic switches, the input points of which are at the terminals of the storage battery, and the junction points of which feed the primary of a voltage-boosting transformer, the secondary of which feeds a rectifier element providing said DC output voltage. The voltage-boosting transformer may be a planar transformer capable of operating at high frequency, so that its volume is reduced and its efficiency is high. Operation at about 50 kHz may be advantageous to minimize losses in both the transformer and the electronic switches.

[0027] The second DC-DC stage may comprise an H-bridge of electronic switches, the input points of which are at the terminals of the rectifier element, the junction points of which supply the motor via a low-pass filter, the electronic switches being controlled by a microcontroller programmed to carry out bipolar pulse width modulation producing at the junction points a square-wave output voltage with variable duty cycle which, after filtration by the low-pass filter, supplies the motor with a substantially sinusoidal single-phase voltage.

[0028] According to another aspect, the invention proposes a closing or concealing member in a building, provided with a motor control device as defined above.

[0029] According to another aspect, the invention proposes a method for controlling the motorization of a closing or concealing member in a building, in which: - at least one electric motor is mechanically coupled to the closing or concealing member, an electrical energy source delivers a continuous electrical voltage, an electronic power supply circuit supplies the electric motor from the electrical energy source according to control orders, a main control circuit, supplied from the electrical energy source, and associated with a first control signal receiver, is adapted to generate control orders addressed to the electronic power supply circuit, during a waiting phase, while waiting for reception of a possible control signal coming from a remote control, the power supply to the main control and power supply circuits of said coupled motor is inhibited, and the power supply to low-consumption auxiliary electronic circuits capable of permanently ensuring the reception and storage of the control signals, during a reception phase,the auxiliary electronic circuits receive and store a control signal received by air from the remote control, during a wake-up phase, the auxiliary electronic circuits wake up the main control and power supply circuits, during a transmission and control phase, the auxiliary electronic circuits command the restoration of the power supply to the main control and power supply circuits, then, after a predetermined waiting time, transfer to the main control circuits an identical copy of the previously recorded control signal, which main control circuits decode the frame of the control signal and produce corresponding control commands sent to the main power supply circuits to power the motor according to the information contained in the frame of the control signal, after execution of the control commands,we return to the waiting phase as long as no new signal is received on the control signal transceiver. DESCRIPTION SOMMAIRE DES DESSINS

[0030] Other objects, characteristics and advantages of the present invention will emerge from the following description of particular embodiments, made in relation to the attached figures, among which: [ Fig.1 ] There figure 1 is a functional block diagram of the device according to an embodiment of the present invention, illustrating the main organs of the device; [ Fig.2 ] There figure 2 is an electrical diagram of a DC-DC charger according to an embodiment of the present invention, for powering the storage battery from a photovoltaic solar panel; [ Fig.3 ] There figure 3 is an electrical diagram of a DC-DC voltage boost converter according to an embodiment of the present invention, realizing the first stage of the electronic power supply circuit; [ Fig.4 ] There figure 4 is an electrical diagram of a DC-AC converter forming the second stage of the electronic power supply circuit according to an embodiment of the present invention; [ Fig.5 ] There figure 5 is a time diagram illustrating the bipolar pulse width modulated waveform of the output electrical voltage of the electronic power supply circuit powering the AC electric motor; [ Fig.6 ] There figure 6 illustrates the positioning, in a motorization box, of the solar energy source and of all the electronic circuits according to the present invention for supplying the drive motor of a concealment or closing member; [ Fig.7 ] There figure 7 is a simplified functional block diagram of the device, illustrating the power supply status of the main components of the device during a standby phase; [ Fig.8 ] There figure 8 is a simplified functional block diagram of the device, illustrating the state of the main organs of the device during a phase of reception of a control signal; [ Fig.9 ] There figure 9 is a simplified functional block diagram of the device, illustrating the state of the main organs of the device during a wake-up phase; and [ Fig.10 ] There figure 10 is a simplified functional block diagram of the device, illustrating the power supply status of the main components of the device during a transmission and control phase, during which the transmission of a copy of the control signal and the actuation of the motor take place. DESCRIPTION DES MODES DE REALISATION PREFERES

[0031] As illustrated in the figure 1 , the device according to the invention generally comprises an electrical energy source 100, an electronic power supply circuit 5, with two stages 5a and 5b, and an alternating current electric motor 3 mechanically coupled to a concealing member 10.

[0032] At the request of a user, a remote control 8 sends, by air, control signals 7 intended for a main control circuit 6 which transforms them into control orders 60 addressed to the electronic power supply circuit 5 to control the rotation of the motor 3 in the appropriate direction and for an appropriate duration.

[0033] The main control circuit 6 is associated with a first control signal receiver 61 capable of receiving and recognizing control signals 7 coming from the remote control 8. The control signals 7 emitted by the remote control 8 are in coded form, consisting of a train of pulses according to a predefined frame of a few tens of milliseconds, so as not to be confused with other signals coming from the environment. The code is rotating, that is to say that it is modified with each control signal. The control signals 7 are intended to be subsequently decoded by the main control circuit 6 to be transformed into control orders 60.

[0034] According to the present invention, the first control signal receiver 61, the main control circuit 6 and the electronic power supply circuit, forming a control assembly, may be known circuits and commonly used for controlling the actuation of a closing or concealing member 10 in a building. In other words, the invention may find application in a simple modification of known motorization control devices, by adding additional circuits making it possible to reduce their electrical energy consumption and thus increase their autonomy.

[0035] To fulfill the dual function of reducing electrical energy consumption and making the recognition of the control signal code 7 more reliable without the user having to repeatedly use the remote control 8, the present invention comprises additional circuits, namely a control signal transmitter-receiver 81 and an auxiliary control circuit 80.

[0036] In the embodiment illustrated in the figures, each control signal 7 is actually picked up by the control signal transceiver 81, which transmits it to the auxiliary control circuit 80 which stores it. The auxiliary control circuit 80 is adapted to then transmit a copy 70 of the control signal 7 to the control signal transceiver 81, which transmits it to the first control signal receiver 61 so that it can be transformed into control orders 60 by the main control circuit 6.

[0037] In the embodiment illustrated in the figure 1 , the transmission of the copy 70 of the stored control signal 7 from the control signal transmitter-receiver 81 to the first control signal receiver 61 is carried out by air.

[0038] Alternatively, the control signal transceiver 81 can be connected to the first control signal receiver 61 by a conductive connection transmitting by conduction to the first control signal receiver 61 the copy 70 of the stored control signal 7.

[0039] The auxiliary control circuit 80 thus firstly fulfills the function of storing the control signal 7 received from the control signal transceiver 81, as well as the function of controlling the control signal transceiver 81 to put it either in a reception mode allowing it to receive the control signal 7 transmitted by the remote control 8, or in a transmission mode allowing it to transmit the copy 70 of the control signal 7 to the first control signal receiver 61.

[0040] The auxiliary control circuit 80 also fulfills the essential function of controlling the power supply to most of the electrical and electronic circuits of the motor control device, namely the first control signal receiver 61, the main control circuit 6, and the electronic power supply circuit 5.

[0041] The functions of the auxiliary control circuit 80 are illustrated in the figures 7 à 10 , to which reference should now be made. Each of these figures shows the essential components of the motor control device, namely the electrical energy source 100, a control assembly 200, the electric motor 3, the auxiliary control circuit 80 and the control signal transmitter-receiver 81.

[0042] The control assembly 200 comprises, in summary form, the known elements illustrated in the figure 1 , namely the first control signal receiver 61, the main control circuit 6 and the power supply electronic circuit 5, which constitute the main control and power supply electronic circuits.

[0043] The auxiliary control circuit 80 and the control signal transmitter-receiver 81 constitute low-consumption auxiliary electronic circuits, permanently powered from the electrical energy source 100, and which are thus capable of permanently ensuring the reception and storage of the control signals 7.

[0044] On the figure 7 , the state of the motor control device is illustrated during a waiting phase, waiting to receive a possible control signal from a remote control. During this waiting phase, the auxiliary control circuit 80 sends to the control signal transmitter-receiver 81 a signal 82 which places it in reception mode. Simultaneously, during this waiting phase, the auxiliary control circuit 80 commands the cutting of the electrical connection between the electrical energy source 100 and the control assembly 200, so as to inhibit the power supply to the main electronic control and power supply circuits (the first control signal receiver 61, the main control circuit 6, and the electronic power supply circuit 5).During this waiting phase, as illustrated by the reference arrows 90 and 91, only the auxiliary control circuit 80 and the control signal transceiver 81 are powered from the electrical energy source 100. In practice, this power supply is provided via a suitable DC-DC converter 100a, it being observed that the power supply of the low-power electronic circuits of the auxiliary control circuit 80 and the control signal transceiver 81 generally requires a voltage of the order of 3.3 V, whereas the electrical energy source 100 has a higher voltage, for example 28.8 V.

[0045] On the figure 8 , the state of the motor control device is illustrated during a phase of reception of a control signal 7 coming from the remote control 8. During this reception phase, the electrical supply of the circuits is maintained as in the waiting phase. Upon receipt of the control signal 7, the control signal transmitter-receiver 81 transmits the control signal 7 to the auxiliary control circuit 80, the function of which is then to record it.

[0046] On the figure 9 , the state of the motor control device has been illustrated during a wake-up phase. During this wake-up phase, the auxiliary control circuit 80 sends a signal 83 to the control signal transmitter-receiver 81 to place it in transmission mode, and sends a signal 84 to the control assembly 200 to wake it up.

[0047] On the figure 10 , which can be considered in combination with the figure 1 , the state of the motorization control device has been illustrated during a transmission and control phase. During this transmission and control phase, the auxiliary control circuit 80 firstly controls the reestablishment of the electrical connection between the electrical energy source 100 and the control assembly 200, as indicated by the arrow 92, so as to reestablish the power supply to the main electronic control and power supply circuits comprising the first control signal receiver 61, the main control circuit 6 and the electronic power supply circuit 5.Then, after a predetermined waiting time which is chosen to be greater than the time necessary for the first control signal receiver 61, after its power supply has been restored, to be able to recognize the frame of the control signals, the auxiliary control circuit 80 transfers to the control signal transceiver 81 a copy 70 of the control signal 7 which it previously recorded during the reception phase, and causes the control signal transceiver 81 to transmit this copy 70 of the control signal 7 to the first control signal receiver 61. In this way, this copy 70 of the control signal 7 reaches the main control circuit 6, which decodes the frame and produces the corresponding control orders 60 (. figure 1 ) transmitted to the electronic power supply circuit 5 to power the electric motor 3 from the electrical energy source 100 and to cause it to rotate in the appropriate direction of rotation and for the appropriate duration corresponding to the information contained in the frame of the control signal 7.

[0048] Then, after execution of the control orders 60, the auxiliary control circuit 80 reconfigures the assembly in the waiting phase.

[0049] The auxiliary control circuit 80 can, in practice, be produced from a microcontroller, associated with a memory adapted for the storage of at least one control signal 7, and programmed to execute the steps described above in relation to the figures 7 à 10 . The transceiver 81 may consist of an electronic circuit usually used to perform the functions of receiving and transmitting electromagnetic waves at short distances. As a result, the auxiliary control circuit 80 and the control signal transceiver 81 are low-consumption electronic circuits, not requiring a low-consumption standby state, and not significantly affecting the autonomy of the motor control device despite their permanent power supply state.

[0050] In the embodiment illustrated in the figure 2 , the electrical energy source 100 comprises a photovoltaic solar panel 1, directly delivering the energy in electrical form. The output voltage of the photovoltaic solar panel 1 is in a range of approximately 12 to 18 V, namely the usual range of output voltages of photovoltaic solar panels. The output power of the photovoltaic panel must be as large as possible in relation to the small surface area that one wishes to allocate to it. A typical power of the order of 5 or 6 W peak may be suitable. The technology used for the photovoltaic panel must therefore be fairly efficient, for example of the monocrystalline or polycrystalline type.

[0051] The electrical energy source 100 further comprises a storage battery 2, powered from the photovoltaic solar panel 1 via a DC-DC charger 4 which converts the low voltage output electrical energy from the photovoltaic solar panel 1 into higher voltage charging electrical energy, of the order of approximately 24 to 30 V, from the storage battery 2.

[0052] The alternating current electric motor 3 is of a type capable of being supplied by an effective single-phase electrical voltage in the range between 50 and 1000 volts, advantageously of the order of approximately 230 V, and capable of delivering a nominal torque of 10 Nm to 80 Nm, for example a nominal torque of approximately 50 Nm.

[0053] The nominal voltage of the storage battery 2 is in a range of approximately 24 to 30 V, constituting an intermediate electrical voltage between the nominal voltage delivered by the photovoltaic solar panel 1 and the nominal supply voltage of the electric motor 3, making it easier to reach the voltage necessary for the operation of the electric motor 3.

[0054] In practice, in the storage battery 2, each accumulator is a Li-lon battery having a nominal voltage of 3.6 V and whose unit capacity is at least 2600 milliampere hours. Thus, the storage battery 2 can be produced, for example, by connecting 8 3.6 V accumulators in series.

[0055] To enable the accumulator battery 2 to be recharged at a nominal voltage of between approximately 24 and 30 volts, from the photovoltaic solar panel 1 having a lower nominal voltage of approximately 12 to 18 V, the DC-DC charger 4 is a DC voltage booster electronic circuit.

[0056] In the embodiment illustrated in the figure 2 , the DC-DC charger 4 is a voltage boost converter, of the parallel chopper type, whose input terminals 40 and 41 are connected to the photovoltaic solar panel 1, and whose output terminals 42 and 43 are connected to the storage battery 2. The DC-DC charger 4 comprises an electronic switch 44 of the MOSFET (insulated gate field effect transistor) type, controlled by a control circuit comprising a microcontroller 47b and a shaping circuit 47a. The source-drain circuit of the electronic switch 44 is connected in series with an inductor 45 to the input terminals 40 and 41, and its gate 46 receives, via the shaping circuit 47a, a pulsed control signal generated by a microcontroller 47b. A capacitor 48 is connected to the output terminals 42 and 43, and a Schottky diode 49 is connected between the electronic switch 44 and the capacitor 48.

[0057] The microcontroller 47b comprises a recorded program by which the microcontroller 47b scans the electrical voltage information at the input terminals 40 and 41, scans the electrical current information delivered by the photovoltaic solar panel 1, and controls the switching of the electronic switch 44 so as to remain as close as possible to the maximum power point of the photovoltaic solar panel 1. This maximum power point is located close to 80% of the maximum voltage delivered by the photovoltaic solar panel 1. This program can be of the type generally called MPPT (maximum Power Point Tracking), well known to those skilled in the art in the use of solar panels.

[0058] The microcontroller 47b is also programmed to maintain the recharge voltage of the accumulators at the correct level at all times while limiting the current if necessary, in particular when recharging above 80% of the full charge of the accumulators making up the accumulator battery 2.

[0059] The microcontroller 47b can also be programmed to balance the charge of the accumulators which are in series in the accumulator battery 2, by controlling transistors associated with balancing resistors which ensure the discharge of surplus energy from the accumulators when necessary.

[0060] To enable the electric motor 3 to be powered by a single-phase alternating electric voltage of approximately 230 V from the storage battery 2 with a nominal continuous voltage of approximately 24 to 30 V, the electronic power supply circuit 5 which is interposed between the storage battery 2 and the electric motor 3 ( Figure 1 ), comprises two successive stages 5a and 5b which transform the direct voltage output electrical energy of the storage battery 2 into alternating voltage output electrical energy suitable for powering the alternating current electric motor 3. Input terminals 50 and 51 of the electronic power supply circuit 5 are connected to terminals 42 and 43 of the storage battery 2, while output terminals 52 and 53 are connected to the alternating current electric motor 3

[0061] We now consider the figures 3 And 4, which illustrate an embodiment according to the present invention for the electronic power supply circuit 5 making it possible to power the alternating current electric motor 3 from the direct voltage electrical energy delivered by the electrical energy source 100.

[0062] There figure 3 illustrates the first stage 5a of the electronic power supply circuit 5, fulfilling the function of a DC-DC voltage booster converter, to convert the relatively low DC voltage of the storage battery 2 into a DC voltage of sufficiently high value, at least equivalent to the peak voltage of the final AC voltage wave envisaged for the power supply of the AC electric motor 3.

[0063] In the illustrated embodiment, which may be chosen for reasons of efficiency, the first DC-DC stage 5a essentially comprises an H-bridge of four electronic switches 52a, 52b, 52c and 52d, which are advantageously each of the MOSFET (insulated gate field effect transistor) type. The electronic switches 52a and 52b are both connected in series between the input terminals 50 and 51, and their junction point 55a is connected to a first terminal of the primary of a voltage-boosting transformer 54. Similarly, the electronic switches 52c and 52d are both connected in series between the input terminals 50 and 51, and their junction point 55b is connected to the second terminal of the primary of the voltage-boosting transformer 54.

[0064] The grids of the electronic switches 52a, 52b, 52c and 52d receive, via shaping circuits 56 and 57, pulse control signals generated by a microcontroller 58 on its outputs 58a and 58b. The microcontroller 58 is programmed to successively control by its output 58a the conduction of the pair of electronic switches 52a and 52d, then by its output 58b the conduction of the pair of electronic switches 52b and 52c, producing on the primary of the transformer 54 a square wave power supply with a duty cycle of 1 / 1.

[0065] The secondary of the voltage-boosting transformer 54 is connected to the input of a rectifier element 59, which in the illustrated embodiment consists of four diodes 59a, 59b, 59c and 59d, and which is associated with one or more filter capacitors 59e to produce on the output terminals 59f and 59g a rectified and filtered electrical voltage.

[0066] The voltage-boosting transformer 54 is a high-frequency transformer, advantageously of the planar type, capable of operating at high frequency, for example at a frequency of approximately 50 kHz. This allows sufficient power transmission with a transformer of small volume and compact size. In such a planar transformer, the primary winding and the secondary winding may each consist of a stack of planar elementary coils each comprising one or more layers of copper electrically insulated from one another and the ends of which are electrically connected to one another, while the magnetic circuit consists of assembled ferrite cores. Examples of such planar transformers are described for example in documents EP 3300090 A1 or US 7,663,460 B2.As an example, good results can be obtained using a reference planar transformer TP32D2402 produced and marketed by the Chinese company Shaanxi Gold-Stone Electronics Co., LTD.

[0067] The electronic switches 52a, 52b, 52c and 52d operate at a relatively low voltage, the peak voltage being equal to the DC voltage of the storage battery 2, i.e. approximately 24 V to 30 V. To produce the power required to supply the motor 3, the current passed through must be quite high, which requires the use of field effect transistors with very good on-state characteristics. Furthermore, these electronic switches must have a switching speed less than or equal to the natural descent of the current during switching, so as not to dissipate too much energy unnecessarily during switching.

[0068] We now consider the figure 4 , which illustrates the second stage 5b of the electronic power supply circuit 5. This second stage 5b is a DC-AC converter which transforms the direct output voltage of the first stage 5a into a sinusoidal alternating voltage capable of powering the electric motor 3. In the illustrated embodiment, this second stage 5b is in the form of an H-bridge consisting of four electronic switches 15a, 15b, 15c and 15d, which are advantageously each of the MOSFET (insulated gate field effect transistor) type. The electronic switches 15a and 15b are both connected in series between the input terminals 59f and 59g, and their junction point 15e is connected to a first output terminal 52 via a low-pass filter 15.Similarly, the electronic switches 15c and 15d are both connected in series between the input terminals 59f and 59g, and their junction point 15f is connected to the second output terminal 53 through the same low-pass filter 15.

[0069] The gates of the electronic switches 15a, 15b, 15c and 15d receive pulse control signals generated by a microcontroller 15g on its respective outputs. The microcontroller 15g is programmed to successively drive the conduction of the pair of electronic switches 15a and 15d to generate a positive pulse 11a at the output, then the conduction of the pair of electronic switches 15b and 15c to generate a negative pulse 11b at the output, with bipolar pulse width modulation producing at the junction points 15e and 15f an output voltage 11 in square waves with a variable duty cycle as illustrated in the figure 5 .

[0070] The low-pass filter 15 may for example comprise a first inductance 15h in series between the junction point 15e and the output terminal 52, a second inductance 15i in series between the junction point 15f and the output terminal 53, and a capacitor 15j between the output terminals 52 and 53. At the output of the filter 15, the voltage applied to the motor 3 is close to a sinusoid, as illustrated by the curve 12 on the figure 5 .

[0071] There figure 6 illustrates a motorization box 71 for a concealing or closing member, the location of the photovoltaic panel 1 on the surface of the motorization box 71, and the location of the electronic assembly 72 composed of the accumulator battery and the various electronic circuits previously described, allowing the power supply and control of the alternating current electric motor at a nominal voltage of 230 V for driving a concealing or closing member.

[0072] Thanks to the technological choices previously described, the electronic assembly 72 is particularly compact, occupying a substantially parallelepipedal volume having a length L less than or equal to 350 mm, a height H of approximately 70 mm, a depth P of approximately 20 mm.

[0073] This makes it possible to house the electronic assembly 72 inside the motorization box 71, in a position adjacent to the photovoltaic panel 1 which itself is on the surface of the motorization box 71.

[0074] The present invention is not limited to the embodiments which have been explicitly described, but it includes the various variations and generalizations contained within the scope of the following claims.

Claims

1. Motor control device for a closing or shutting mechanism (10) in a building, comprising: - at least one electric motor (3) mechanically coupled to the closing or shutting mechanism (10), - an electrical energy source (100) delivering a DC voltage, - a power-supply electronic circuit (5) for supplying power to the electric motor (3) from the electrical energy source (100) on the basis of control commands (60), - a main control circuit (6) which is supplied with power from the electrical energy source (100), is linked to a first control-signal receiver (61) and is designed to generate control commands (60) addressed to the power-supply electronic circuit (5), - a remote control (8) designed to generate and transmit control signals (7) to the first control-signal receiver (61) by air, characterized in that the motor control device further comprises: - an auxiliary control circuit (80) designed to stay awake permanently and comprising a memory which is able to store a control signal (7), - a control-signal transceiver (81) designed to stay awake in a receiving mode so as to receive a control signal (7) received from the remote control (8) and to transmit said control signal (7) to the auxiliary control circuit (80) which stores it, - the auxiliary control circuit (80) being further designed to establish the supply of power to the main control circuit (6) and to the power-supply electronic circuit (5) after receiving and storing said control signal (7), - the auxiliary control circuit (80) being further designed to put the control-signal transceiver (81) into a transmission mode and to command it to transmit an identical copy (70) of said stored control signal (7) to the first control-signal receiver (61), - the auxiliary control circuit (80) being further designed to put the control-signal transceiver (81) back into its receiving mode and to inhibit the supply of power to the main control circuit (6) and to the power-supply electronic circuit (5) after the control commands (60) have been executed following said control signal (7) received on the control-signal transceiver (81) and for as long as no new signal is received on the control-signal transceiver (81).

2. Motor control device according to Claim 1, characterized in that the auxiliary control circuit (80) commands the transmission of said identical copy (70) of the stored control signal (7) to the first control- signal receiver (61) after a predetermined waiting time which is chosen to be longer than the time needed for the first control-signal receiver (61), after its power supply has been established, to be able to acknowledge said identical copy (70) of the control signal (7) coming from the control-signal transceiver (81) .

3. Motor control device according to one or the other of Claims 1 and 2, characterized in that the auxiliary control circuit (80) and the control-signal transceiver (81) are low-consumption electronic circuits which do not need to have a reduced-consumption idle state.

4. Motor control device according to any one of Claims 1 to 3, characterized in that the auxiliary control circuit (80) comprises a programmed microcontroller.

5. Motor control device according to any one of Claims 1 to 4, characterized in that the control-signal transceiver (81) is designed to transmit said identical copy (70) of the stored control signal (7) to the first control-signal receiver (61) by air.

6. Motor control device according to any one of Claims 1 to 4, characterized in that the control-signal transceiver (81) is connected to the first control-signal receiver (61) via a conductive connection so as to transmit said identical copy (70) of the stored control signal (7) to the first control-signal receiver (61) by conduction.

7. Motor control device according to any one of Claims 1 to 6, characterized in that the electrical energy source (100) is a battery pack (2) supplied with power from a photovoltaic solar panel (1).

8. Motor control device according to Claim 7, characterized in that: - the electric motor (3) is a low-voltage AC motor having an rms voltage in the range comprised between 50 and 1000 V, advantageously equal to about 230 V; - the photovoltaic solar panel (1) delivers a DC voltage of less than the rms voltage of the electric motor (3), - the battery pack (2) has a nominal voltage of less than said rms voltage of the electric motor (3) and of greater than the DC voltage delivered by the photovoltaic solar panel (1), - a DC-DC charger (4) converts the electrical energy output from the photovoltaic solar panel (1) into an electrical energy at the recharging voltage of the battery pack (2), - the power-supply electronic circuit (5) transforms the electrical energy output at the DC voltage of the battery pack (2) into an electrical energy at the output AC voltage able to supply power to said electric motor (3).

9. Motor control device according to any one of Claims 1 to 8, characterized in that the power-supply electronic circuit (5) comprises a first stage (5a) in the form of a DC-DC voltage boost converter which converts the DC voltage from the battery pack (2) into a DC output voltage of at least equal to the peak voltage of the wave of the final voltage envisaged for supplying power to the electric motor (3), and comprises a second stage (5b) in the form of a DC-AC converter which transforms the DC voltage output from the first stage (5a) into a sinusoidal AC voltage able to supply power to the electric motor (3).

10. Motor control device according to Claim 9, characterized in that the DC-DC first stage (5a) comprises an H bridge of electronic switches (52a, 52b, 52c, 52d) the input points (50, 51) of which are at the terminals of the battery pack (2) and the junction points (55a, 55b) of which supply power to the primary of a voltage boost transformer (54) the secondary of which supplies power to a rectifier element (59) providing said DC output voltage.

11. Motor control device according to Claim 10, characterized in that the voltage boost transformer (54) is a planar transformer able to operate at high frequency.

12. Motor control device according to Claim 11, characterized in that the H bridge of the DC-DC first stage (5a) operates at a frequency of about 50 kHz.

13. Motor control device according to any one of Claims 9 to 12, characterized in that the DC-AC second stage (5b) comprises an H bridge of electronic switches (15a, 15b, 15c, 15d) the input points (59f, 59g) of which are at the terminals of the rectifier element (59), the junction points (15e, 15f) of which supply power to the motor (3) via a low-pass filter (15), the electronic switches (15a, 15b, 15c, 15d) being driven by a microcontroller (15g) programmed to carry out bipolar pulse-width modulation producing, at the junction points (15e and 15f), a pulsed output voltage (11) having a variable duty cycle which, after being filtered by the low-pass filter (15), supplies power to the motor (3) via a substantially sinusoidal singlephase voltage (12).

14. Closing or shutting mechanism in a building, equipped with a motor control device according to any one of Claims 1 to 13.

15. Method for the motor control of a closing or shutting mechanism (10) in a building, in which: - at least one electric motor (3) is mechanically coupled to the closing or shutting mechanism (10), - an electrical energy source (100) delivers a DC voltage, - a power-supply electronic circuit (5) supplies power to the electric motor (3) from the electrical energy source (100) on the basis of control commands (60), - a main control circuit (6), which is supplied with power from the electrical energy source (100) and is linked to a first control-signal receiver (61), is designed to generate control commands (60) addressed to the power-supply electronic circuit (5), - during a waiting phase, while waiting to receive a possible control signal (7) coming from a remote control (8), the supply of power to the main circuits for controlling (61, 6) and supplying power (5) to said motor (3) is inhibited, and the supply of power to the low-consumption auxiliary electronic circuits (80, 81) which are able to permanently ensure the reception and storage of the control signals (7) is conserved, - during a receiving phase, the auxiliary electronic circuits (80, 81) receive and store a control signal (7) received from the remote control (8) by air, - during a wake-up phase, the auxiliary electronic circuits (80, 81) wake up the main circuits for controlling (61, 6) and supplying power (5), - during a transmission and control phase, the auxiliary electronic circuits (80, 81) command the reestablishment of the supply of power to the main circuits for controlling (61, 6) and supplying power (5), then, after a predetermined waiting time, transfer an identical copy (70) of the previously stored control signal (7) to the main control circuits (61, 6), which main control circuits (61, 6) decode the frame of the control signal (7) and produce corresponding control commands (60) which are sent to the main power-supply circuits (5) so as to supply power to the motor (3) according to the information contained in the frame of the control signal (7), - after the control commands (60) have been executed, the waiting phase is returned to for as long as no new signal is received on the control-signal transceiver (81) .