Radio frequency signal control device for a household electrical appliance, household electrical appliance and household electrical system comprising such a control device

Abstract

Radio frequency control device for a household electrical appliance, household electrical appliance, and household electrical system comprising such a control device. The invention relates to a radio frequency control device for an electrical load of a household electrical appliance. A radio frequency module, capable of receiving and / or transmitting radio frequency signals in a predetermined frequency band, comprises a receive input and / or a transmit output and a reference terminal. A coupling circuit connects a first electrical conductor to the receive input and / or the transmit output and separates certain radio frequency signals in the predetermined frequency band from other radio frequency signals, and directs the separated radio frequency signals to the receive input and / or the transmit output of the radio frequency module.A blocking circuit connects a second electrical conductor to the reference terminal of the radio frequency module and blocks radio frequency signals traveling from the second electrical conductor to the reference terminal over a frequency range (PdF) exhibiting a negative frequency asymmetry, relative to the predetermined frequency band (BdF). Figure for the abbreviation: 4.

Description

Title of the invention: Radio frequency signal control device for a household electrical appliance, household electrical appliance and household electrical system comprising such a control device. Technical field

[0001] The present invention relates to a radio frequency signal control device for a household electrical appliance. It also relates to a household electrical appliance comprising such a control device, as well as a household electrical system comprising such an appliance. State of the Art

[0002] A radio frequency control device for a household electrical appliance is electrically powered by a first conductor and a second conductor from a power supply. Such a control device includes a radio frequency module whose receive input and / or transmit output is coupled to the first electrical conductor, so as to transmit and / or receive radio frequency signals in a predetermined frequency band. The radio frequency module is electrically connected to the ground of the radio frequency control device. The electrical conductors of the power supply act here as a radio antenna, thus saving the need for a dedicated radio antenna wire.

[0003] It is known to power such a device electrically with an alternating current power supply, such as the mains, by electrically connecting the second electrical conductor to ground. This is, for example, described in FR 2 930 093 AL

[0004] One disadvantage of such a device is that, when attempting to power it with a direct current power supply at equivalent load, the amount of current flowing from the first electrical conductor to the second electrical conductor to power this device electrically is significantly greater than for an alternating current power supply, for example on the order of several amperes.

[0005] Furthermore, the insulation between the first electrical conductor and the second electrical conductor is generally reduced between an AC power cable and a DC power cable, particularly to comply with electrical safety standards for appliances electrical. Thus, this increases the capacitive and / or inductive coupling value between the first electrical conductor and the second electrical conductor.

[0006] Individually or in combination, the increase in the quantity of current and the increase in coupling results in a radio frequency signal circulating on the first electrical conductor also being found between the second conductor and the electrical ground by capacitive coupling and / or inductive coupling between the first conductor and the second conductor, thus creating undesirable common mode which may decrease the ability of the radio frequency module to transmit and / or receive radio frequency signals.

[0007] It is therefore desirable to have a device capable of being powered by a direct current power supply in which at least one of the wires acts as a radio frequency antenna while preserving the radioelectric performance of the radio frequency antenna. Summary of the invention

[0008] To this end, the invention relates, according to a first aspect, to a radio frequency signal control device for an electrical load of a household electrical appliance, the radio frequency signal control device and the electrical load being supplied with electrical energy by a first electrical conductor and a second electrical conductor electrically connected to a direct current power supply, the radio frequency signal control device comprising: - a radio frequency module capable of receiving and / or transmitting radio frequency signals in a predetermined frequency band, the radio frequency module comprising a receive input and / or a transmit output and a reference terminal, - a coupling circuit, the coupling circuit electrically connecting the first electrical conductor to the receive input and / or transmit output of the radio frequency module and being configured to separate certain radio frequency signals carried by the first electrical conductor in the predetermined frequency band, from other radio frequency signals carried by the first electrical conductor, and to direct the radio frequency signals separated from the other radio frequency signals to the receive input and / or transmit output of the radio frequency module, and - a blocking circuit electrically connecting the second electrical conductor to the reference terminal of the radio frequency module and configured to block radio frequency signals flowing from the second electrical conductor to the reference terminal of the radio frequency module on a frequency range exhibiting a negative frequency asymmetry, relative to the predetermined frequency band.

[0009] Thanks to the invention, the radio frequency signal control device selectively blocks radio frequency signals traveling from the second electrical conductor to the reference terminal of the radio frequency module over a predetermined frequency range, while adjusting the gain of the control device according to the frequency. The control device allows the electrical energy necessary to power the load to pass through, while blocking interference in a frequency range where a differential mode between a receive and / or transmit input and a reference terminal of the radio frequency module is desirable.

[0010] According to advantageous and non-mandatory aspects of the invention, such a control device may incorporate one or more of the following features, taken in any technically permissible combination. - The radio frequency signal control device further includes a power supply module, while the coupling circuit electrically connects the first electrical conductor to a first terminal of the power supply module, such that the coupling circuit blocks, at least on the predetermined frequency band, the electrical signals flowing from the first electrical conductor to the first terminal of the power supply module, and while a second terminal of the power supply module is electrically connected to the reference terminal of the radio frequency module to electrically supply at least one module of the radio frequency signal control device. - The frequency range is delimited by a lower limit, the value of which is between 8 megahertz and 13.56 megahertz, preferably between 8 megahertz and 12 megahertz, preferably also equal to about 10 megahertz. - The blocking circuit includes a capacitor, a first low-frequency inductance and a second high-frequency inductance distinct from the first inductance, the first inductance and the second inductance being electrically connected together in series and electrically connected together in parallel with the capacitor, such that the combination of the capacitor with the first inductance and the second inductance forms a resonant circuit electrically connecting the second electrical conductor to the reference terminal of the radio frequency module, and blocking the electrical signals flowing from the second electrical conductor to the reference terminal over the frequency range. - The blocking circuit comprises a capacitor and a single inductor, preferably of the surface-mount type, combining low-frequency and high-frequency properties and electrically connected in parallel with the capacitor, such that the combination of the capacitor with the single inductor forms a resonant circuit electrically connecting the second electrical conductor to the reference terminal of the radio frequency module, and blocking electrical signals flowing from the second electrical conductor to the reference terminal over the frequency range. - The blocking circuit comprises a capacitor, a first inductance, called high-frequency, and a second inductance, called low-frequency, distinct from the first inductance, the first inductance being electrically connected in parallel with the capacitor, such that the combination of the capacitor with the first inductance forms a resonant circuit electrically connecting the second electrical conductor to the reference terminal of the radio frequency module and blocking the electrical signals flowing from the second electrical conductor to the reference terminal over the frequency range and in that the second high-frequency inductance is electrically connected between a second end of the resonant circuit and a terminal of the blocking circuit intended to be connected to the electrical load of the household electrical appliance. - One end of the resonant circuit is electrically connected to a first electrical ground, itself electrically connected to the reference terminal of the radio frequency module and in that the second high frequency inductor is connected, opposite the resonant circuit, to a second electrical ground, distinct from the first electrical ground.

[0011] According to a second aspect, the invention relates to a domestic electrical appliance comprising at least one electrical load and a radio frequency signal control device as described above.

[0012] According to a third aspect, the invention relates to an electrical system comprising a household electrical appliance, a direct current power supply for the household electrical appliance and a remote control device, characterized in that the household electrical appliance comprises at least one electrical load and a radio frequency signal control device as described above and in that the radio frequency signal control device is configured to receive radio frequency signals representative of control instructions issued by the remote control device.

[0013] Such a device and such a system induce the same advantages as those mentioned above with regard to the control device of the invention.

[0014] According to advantageous and non-mandatory aspects of the invention, such a domestic electrical system may incorporate one or more of the following features, taken in any technically permissible combination.

[0015] - The direct current power supply is provided by a network domestic power supply via direct current, or by battery.

[0016] - The direct current power supply includes a panel photovoltaic system located externally to the domestic electrical appliance and in that the radio frequency signal control device further includes a rechargeable battery located inside the domestic electrical appliance and electrically connected to the power supply module, the rechargeable battery being configured to be recharged by the electrical energy supplied by the photovoltaic panel. Brief description of the figures

[0017] The present invention will be better understood with the aid of the following description with reference to the accompanying figures, given solely by way of example and in which identical reference signs correspond to structurally and / or functionally identical or similar elements.

[0018] [Fig-1] Fig. 1 is a schematic electrical diagram of an electrical system domestic, incorporating a domestic electrical appliance, with a radio frequency signal control device conforming to a first embodiment of the invention, a direct current power supply and a remote device;

[0019] [Fig.2] The [Fig.2] is a schematic electrical diagram of a coupling circuit belonging to the radio frequency signal control device shown in the [Fig.1];

[0020] [Fig.3] The [Fig.3] is an electrical schematic analogous to the [Fig.2], for a coupling circuit belonging to a radio frequency signal control device according to a second embodiment of the invention;

[0021] [Fig.4] Fig.4 schematically represents the variations of a current gain of the radio frequency signal control device shown in Fig.1, as a function of the frequency of the radio waves;

[0022] [Fig.5] The [Fig.5] is a schematic electrical diagram of a blocking circuit belonging to the radio frequency signal control device shown in the [Fig.1];

[0023] [Fig. 6] [Fig. 6] is a schematic electrical diagram analogous to [Fig. 1] of a domestic electrical system, incorporating a signal control device radio frequencies according to a third embodiment of the invention, a direct current power supply and a remote device;

[0024] [Fig.7] The [Fig.7] is a schematic electrical diagram of a blocking circuit belonging to the radio frequency signal control device shown in the [Fig.6];

[0025] [Fig.8] [Fig.8] is a schematic electrical diagram analogous to [Fig.1] of a domestic electrical system, incorporating a radio frequency signal control device according to a fourth embodiment of the invention, a direct current power supply and a remote device; and

[0026] [Fig.9] The [Fig.9] is an electrical schematic analogous to the [Fig.1] of a domestic electrical system, incorporating a radio frequency signal control device according to a fifth embodiment of the invention, a direct current power supply and a remote device. Detailed description

[0027] With reference to [Fig.1], a household electrical appliance 5 includes a radio frequency signal control device 1 configured to be electrically connected to a direct current power supply 2, and to control an electrical load 3 which belongs to the household electrical appliance 5. The radio frequency signal control device 1 is arranged to cooperate with a remote device 4.

[0028] The DC power supply 2, the remote device 4 and the household electrical appliance 5 belong to a household electrical system 10 according to the invention.

[0029] According to one embodiment, the electric charge 3 is internal to a housing of the household electrical appliance 5.

[0030] According to an alternative embodiment, the electric charge 3 is external to a housing of the household electrical appliance 5, while belonging to the household electrical appliance.

[0031] The remote device 4 is configured to transmit at least radio frequency signals to the control device 1 representing control instructions to be executed by the electrical load 3.

[0032] The remote device 4 may be, for example, a remote control, a smartphone, a tablet, a multi-service box dedicated to the management of at least one building, a computer connected to a communication network, or any other equivalent device capable of transmitting at least one command. It may be a radio frequency transmitter, either portable or fixed.

[0033] The remote device 4 is either unidirectional, i.e., purely a transmitter, or bidirectional, i.e., both a transmitter and a receiver. For this purpose, it includes at least one radio frequency module (not shown) configured to transmit and optionally receive radio frequency signals representing control instructions on at least one frequency and at least one communication protocol to the radio frequency signal control device 1, in order to control at least one electrical load 3.

[0034] In the example in the figures, the household electrical appliance 5 includes an electrical charge 3. The number of electrical charge(s) 3 of the household electrical appliance 5 is not limiting and may be greater than or equal to 2.

[0035] The electrical load 3 may be intended, for example, for thermal, visual, or lighting comfort, solar protection, or for the closure and / or security of a building or its surroundings. The electrical load 3 may be a lighting element, such as a halogen or LED bulb, an electric pump, a heater, an air conditioner, a ventilation device, or an alarm siren. The electrical load 3 may also be an electric motor of an electromechanical actuator comprising said radio frequency signal control device 1, and in particular an electric motor drawing a high current, especially one exceeding 2.5 amperes. The electromechanical actuator may be intended to move a movable screen, such as a roller shutter, awning, Venetian blind, door, gate, grille, window, or hatch.

[0036] For the purposes of the invention, the direct current power supply 2 is a power supply delivering an electric current whose intensity is constant, in other words, independent of time. The direct current power supply 2 is commonly called a DC power supply (for "courant direct" according to French terminology) or a DC power supply (for "direct current" according to Anglo-Saxon terminology). As is known, the direct current power supply 2 comprises a positive pole "+", in other words, a pole positively charged with electrons, and a negative pole "-", in other words, a pole negatively charged with electrons, the direct current power supply 2 being configured to direct the electrons from the positive pole "+" to the negative pole "-".

[0037] The direct current power supply 2 is external to the household electrical appliance 5, and therefore to the radio frequency signal control device 1. In other words, it is located outside the radio frequency signal control device 1.

[0038] The radio frequency signal control device 1 is electrically connected to the direct current power supply 2 via at least two electrical conductors 21, 22.

[0039] According to one embodiment, the DC power supply 2 is of the extra-low voltage type, in particular delivering a voltage of less than 50 volts, for example 48 volts at 2.5 amps, or 24 volts at 5 amps, or 12 volts at 10 amps, or even 8 volts at 15 amps. For example, the DC power supply is a domestic DC power supply network, or a DC power supply device such as an AC / DC converter electrically connected to the mains.

[0040] According to one embodiment, the DC power supply 2 is a photovoltaic power supply device comprising at least one photovoltaic panel (or solar panel) and a rechargeable battery (not shown), the rechargeable battery being electrically connected to the photovoltaic panel via at least two electrical conductors to be recharged by at least one photovoltaic panel. In this embodiment, the rechargeable battery is configured to power the radio frequency signal control device 1 and / or the electrical load 3 and / or the household electrical appliance 5. The rechargeable battery may be integrated into the household electrical appliance 5, or be external to the household electrical appliance 5, for example in a box inside which the household electrical appliance 5 is mounted.In the case where the rechargeable battery is integrated into the household electrical appliance 5, the electrical conductors electrically connecting the DC power supply 2 to the radio frequency signal control device 1 are those located between the photovoltaic panel and the radio frequency signal control device 1. In the case where the rechargeable battery is external to the household electrical appliance 5, the electrical conductors electrically connecting the DC power supply 2 to the radio frequency signal control device 1 are those located between the assembly formed by the photovoltaic panel with the rechargeable battery and the radio frequency signal control device 1.The photovoltaic panel is positioned outside the radio frequency signal control device 1, for example on a surface of the enclosure inside which the radio frequency signal control device 1 is mounted, the surface being oriented towards the outside of a building to capture solar energy.

[0041] According to one embodiment, the first electrical conductor 21 and the second electrical conductor 22 are integrated into a power supply cable electrically connecting the radio frequency signal control device 1 to the source DC power supply 2. The power supply cable may consist of a plurality of power supply cable portions connected in series between the DC power supply 2 and the radio frequency signal control device 1.

[0042] The electric load 3 is connected to the first conductor 31 by a first terminal 31 and to the second conductor 22 by a second terminal 32.

[0043] The radio frequency signal control device 1 includes a coupling circuit 11, a power supply module 12, a radio frequency module 13, a control module 14 and a blocking circuit 18.

[0044] The radio frequency signal control device 1 is configured to be powered by the direct current power supply 2; for this purpose it includes at least two power supply terminals 15, 16.

[0045] Each of the two power supply terminals 15, 16 is intended to be electrically connected to one end of an electrical conductor 21, 22 of the DC power supply 2.

[0046] The radio frequency signal control device 1 includes at least one control output terminal 17 for at least one electrical load 3. The control output terminal 17 is configured to electrically control at least one electrical load 3.

[0047] Advantageously, the electric load 3 includes control means such as switches or transistors configured to control at least one electric load 3. By way of non-limiting example, the electric load 3 includes a DC electric motor 3 and control means constituting an H-bridge for controlling an electric motor from the control output terminal 17.

[0048] Advantageously, all or part of the first electrical conductor 21 forms a radio antenna adapted for receiving and / or transmitting radio frequency signals. In reception, an electromagnetic field is converted by the first electrical conductor 21 into electrical quantities, in particular voltage and current, constituting an electrical signal circulating in the first electrical conductor 21. In transmission, the first electrical conductor 21 converts the electrical quantities, in particular voltage and current, of an electrical signal circulating in the first electrical conductor 21 into electromagnetic quantities in the space around the first electrical conductor, constituting an electromagnetic field.

[0049] According to the first embodiment illustrated in Figures 1, 2 and 4, radio frequency coupling between the DC power supply 2 and the radio frequency module 13 is achieved on the first electrical conductor 21 electrically connected to a positive terminal "+" of the power supply. direct current 2. The second conductor 22 is electrically connected to a negative pole "-" of the direct current power supply 2. The first electrical conductor 21 is connected to the first power supply terminal 15 of the radio frequency signal control device 1 and the second electrical conductor 22 is electrically connected to the second power supply terminal 16 of the radio frequency signal control device 1.

[0050] Advantageously, the radio frequency signal control device 1 includes a first portion of power supply cable of a predetermined length, the predetermined length being greater than or equal to one-quarter of the wavelength associated with the transmission and / or reception frequency of the radio frequency module 13.

[0051] By way of non-limiting examples, the first portion may have a length of approximately 173 millimeters when the frequency of transmission and / or reception of radio frequency signals is approximately 433 megahertz (MHz), approximately 86 millimeters when the BdF frequency band of transmission and / or reception of radio frequency signals is approximately 868 megahertz, and approximately 30.6 millimeters when the BdF frequency band of transmission and / or reception of radio frequency signals is approximately 2.4 gigahertz.

[0052] The radio frequency signals propagating on the first electrical conductor 21 constituting the radio antenna comprise at least two radio frequency components. These radio frequency signals comprise a first component, referred to as the "low frequency" component (typically with a frequency below 8 megahertz), corresponding to electrical power supply signals, and a second component, referred to as the "high frequency" component, comprising at least radio frequency signals representing control commands received by the first electrical conductor and propagating along it. The high frequency component also includes other radio frequency signals received by the first electrical conductor 21 and / or conducted through it via the direct current power supply 2.

[0053] The coupling circuit 11 is configured to filter electrical signals propagating on the first electrical conductor 21 supplying the DC power supply source 2.

[0054] The coupling circuit 11 includes several input / output terminals.

[0055] Advantageously, the coupling circuit 11 comprises three input / output terminals 111, 112, 113. A first terminal 111 is electrically connected to the first power supply terminal 15. A second terminal 112 is electrically connected to a first terminal 121 of the power supply module 12. A third terminal 113 is electrically connected to a receive input and / or transmit output terminal 131 of the radio frequency module 13.

[0056] The first portion of the power supply cable of a predetermined length mentioned above is located between terminals 15 and 111.

[0057] The supply current of the power supply module 12, which flows between terminals 112 and 121, includes low-frequency signals, with a frequency lower, for example, than 1 megahertz.

[0058] The coupling circuit 11 is configured to separate different components of the electrical signals propagating on the first electrical conductor 21 and to direct each separated component to a terminal 112 or 113 of the coupling circuit IL

[0059] More specifically, the coupling circuit 11 is arranged to separate certain radio frequency signals carried by the first electrical conductor 21 at a predetermined frequency, from other radio frequency signals carried by the first electrical conductor which have different frequencies, and to direct the signals at the predetermined frequency to the third terminal 113 of the coupling circuit IL Advantageously, the predetermined frequency corresponds to a median frequency fm of the predetermined BdF frequency band, used to transmit the radio frequency signals emitted by the remote device 4 and received by the radio frequency module 13. The coupling circuit 11 is tuned to the median frequency fm.

[0060] The coupling circuit 11 is further configured to block the propagation of certain radio frequency signals between the first terminal 111 and the second terminal 112 of the coupling circuit 11. The radio frequency signals whose propagation is blocked correspond to signals whose frequency is different from that of the supply signals, therefore greater than 1 megahertz in the example mentioned above.

[0061] As stated previously, the electrical signals entering the coupling circuit 11 via the first terminal 111 comprise the superposition of at least one low-frequency power supply signal and one high-frequency signal representing control commands or state values ​​of a household electrical appliance 5 comprising the radio frequency signal control device 1. The power supply signal and the high-frequency signal are received by the first electrical conductor 21 forming the radio antenna. The power supply signal is transmitted, through the coupling circuit 11, to the power supply module 12, and the high-frequency signal is transmitted, through the coupling circuit 11, to the radio frequency module 13. The propagation of other high-frequency signals is blocked, or at least limited, within the coupling circuit 11.

[0062] Figures 2 and 3 illustrate two examples of embodiments of such a coupling circuit 11. The coupling circuit 11 comprises at least one inductor, also called a "winding", and at least one capacitor, the inductor and capacitor being electrically connected in a parallel configuration to form a circuit resonant or blocking circuit, also known as a "blocking circuit". The inductor(s) and capacitor(s) of the coupling circuit 11 are sized so that the resonant circuit is tuned to a frequency substantially equal to the frequency of the signals to be separated. This may be the electrical power supply signal or the predetermined Bf frequency band used for the transmission of radio frequency signals.

[0063] According to one embodiment, the predetermined BdF frequency band frequency used for the transmission of radio frequency signals representing control orders is centered on a median frequency fm, greater than 100 megahertz.

[0064] According to particular embodiments, the median frequency value fm of the predetermined BdF frequency band, used for the transmission of radio frequency signals representing control orders, is equal to approximately 433 megahertz, approximately 868 megahertz or approximately 2.4 gigahertz.

[0065] According to the first embodiment of the radio frequency signal control device 1, the coupling module of which is illustrated in [Fig. 2], the coupling circuit 11 comprises an inductor L21 and a capacitor C21 electrically connected in parallel between the first and second terminals 111 and 112. The third terminal 113 of the coupling circuit 11 is connected to the inductor L21 at a point located between the two ends of this inductor L21. In this embodiment, the inductor L21 is fictitiously divided into two coils, coupled and placed in series, the third terminal 113 being connected to the common terminal of these two coils via a decoupling capacitor C2.

[0066] According to a second embodiment of the radio frequency signal control device 1, the coupling module of which is illustrated in [Fig.3], the coupling circuit 11 comprises an inductance L22 and two capacitors C22, C23, the inductance L22 being electrically connected in parallel with the two capacitors C22, C23 between the first and second terminals 111 and 112. The two capacitors C22, C23 are electrically connected in series and the third terminal 113 of the coupling circuit 11 is connected to the common point of these two capacitors C22, C23 via a decoupling capacitor C2.

[0067] With reference to [Fig. 2] and [Fig. 3], the decoupling capacitor C2 blocks electrical signals with frequencies below a predetermined frequency, or cutoff frequency, while allowing the propagation of electrical signals with frequencies above this predetermined frequency. Advantageously, the value of this decoupling capacitor C2 is chosen to block the propagation of low-frequency power supply signals.

[0068] In variants not shown, other structures of the coupling circuit are conceivable.

[0069] The coupling circuit 11 provides a voltage collector to the receive input and / or transmit output terminal 131 of the radio frequency module 13 to which it is connected. It must be referenced to an electrical ground (GND) of the radio frequency signal control device 1. As stated previously, the coupling circuit 11 is connected to the first power supply terminal 15 of the radio frequency signal control device 1, specifically via its first terminal 111.

[0070] According to the first embodiment of the radio frequency signal control device 1, illustrated in [Fig.1], the coupling circuit 11 is connected to the positive terminal "+" of the DC power supply 2 via the first conductor 21. In order to prevent a short circuit between the positive terminal "+" and the electrical ground GND at low frequencies, the second terminal 112 of the coupling circuit 11 is electrically connected to the electrical ground GND of the radio frequency signal control device 1 via a decoupling capacitor Cl.

[0071] Advantageously, the decoupling capacitor Cl prevents the propagation of supply signals to ground (GND). The second terminal 112 of the coupling circuit 11 is connected as close as possible to ground (GND). The distance between the connection point of ground (GND) and the coupling circuit 11 is strictly less than, preferably much less than, one-quarter of the wavelength associated with the median frequency fm to which the coupling circuit 11 is tuned. By "much less," we mean at least ten times, or even one hundred times, less.

[0072] With reference to [Fig.1], the coupling circuit 11 is electrically connected to the input receiving and / or output transmitting terminal 131 of the radio frequency module 13 via a radio frequency signal link line 213.

[0073] According to one embodiment, the radio frequency signal control device 1 includes an impedance matching circuit, not shown, electrically connected to the receive input and / or transmit output terminal 131 of the radio frequency module 13. The impedance matching circuit is configured to bring a predetermined impedance value to the receive input and / or transmit output terminal 131 of the radio frequency module 13. The predetermined impedance value corresponds to a value substantially equal to the input (or output) impedance value of the radio frequency module 13. The input (or output) impedance value is, for example, equal to 50 Ohms.

[0074] According to one embodiment, the impedance matching circuit is a separate circuit from modules 11 and 13, installed on the radio frequency signal link line 213.

[0075] According to an alternative embodiment, the impedance matching circuit is integrated into the coupling circuit 11. The coupling circuit 11 then performs both filtering and impedance matching functions.

[0076] According to one embodiment, the radio frequency signal control device 1 is mounted on a printed circuit board (PCB). The printed circuit board may be single-sided, double-sided, single-layer, or multi-layer. At least one side of the board may be fully or partially metallized to form a ground plane.

[0077] According to one embodiment, all or part of the inductances of the coupling circuit 11 and / or the impedance matching circuit are printed inductances.

[0078] According to one embodiment, a printed inductance is, for example, made in the form of printed turns on a metallized face of the printed circuit board.

[0079] According to an alternative embodiment, all or part of the inductances of the coupling circuit 11 and / or the matching circuit are discrete components, for example Surface Mount Components commonly referred to by the acronym "SMC" according to French terminology or "SMD" according to Anglo-Saxon terminology.

[0080] The power supply module 12 is supplied with electrical energy by the DC power supply 2. The power supply module 12 is configured to electrically supply at least one module of the radio frequency signal control device 1 and / or at least one electrical load 3 of a household electrical appliance 5 comprising the radio frequency signal control device 1, from the electrical energy supplied by the DC power supply 2.

[0081] Thus, the radio frequency signal control device 1 makes it possible to electrically supply at least one module of the radio frequency signal control device 1 from the first electrical conductor 21 and second electrical conductor 22 of the direct current power supply source 2, while using the first electrical conductor 21 as an antenna for radio radiation.

[0082] According to one embodiment of the power supply module 12, illustrated in [Fig. 1], the power supply module 12 comprises two power supply terminals 121, 122. The first power supply terminal 121 is electrically connected to the second terminal 112 of the coupling circuit 11 and the second power supply terminal 122 is electrically connected to the electrical ground GND of the radio frequency signal control device 1.

[0083] Advantageously, the decoupling capacitor Cl is connected between terminals 121 and 122 of the power supply module 12.

[0084] The power supply module 12 is configured to generate the supply voltage(s) required for the operation of the various modules and electronic circuits of the radio frequency signal control device 1 and / or of a household electrical appliance 5 comprising the radio frequency signal control device 1, from the electrical energy supplied by the direct current power supply 2. For this purpose, the power supply module 12 includes at least one circuit for transforming the voltage of the direct current power supply 2 into at least one voltage suitable for supplying the various modules and electronic circuits of the radio frequency signal control device 1 and / or of a household electrical appliance 5 comprising the radio frequency signal control device 1. This may be, for example, a direct current voltage with an amplitude of approximately 3V, approximately 5V or approximately 12V.

[0085] According to one embodiment of the invention, the radio frequency module 13 is supplied with electrical energy by the power supply module 12. The radio frequency module 13 is electrically connected to the power supply module 12, for example via at least two power supply terminals not shown.

[0086] The power supply module 12 is electrically connected to the first power supply terminal 15, via the coupling circuit 11, and to the second power supply terminal 16, via the blocking circuit 18.

[0087] According to one embodiment, the radio frequency module 13 is a radio frequency receiving module for radio frequency signals, capable of receiving radio frequency signals from the remote device 4 in a predetermined BdF frequency band, the radio frequency signals being, for example, representative of instructions, i.e. orders, for the control of an electrical load 3 of a domestic electrical appliance 5 comprising the radio frequency signal control device 1.

[0088] According to one embodiment, the radio frequency module 13 is a radio frequency module for transmitting and receiving radio frequency signals, capable of transmitting and receiving radio frequency signals with the remote device 4 in a predetermined frequency band. The radio frequency signals are, for example, representative of instructions, i.e., commands, for controlling an electrical load 3 of a household electrical appliance 5 comprising the radio frequency signal control device 1 and / or of state values ​​of a domestic electrical appliance 5 including the radio frequency signal control device 1.

[0089] The receive input and / or transmit output 131 of the radio frequency module 13 is adapted to, in other words, capable of receiving and / or transmitting radio frequency signals in a predetermined frequency band. The radio frequency module 13 includes at least one reference terminal 132 electrically connected to the electrical ground GND of the radio frequency signal control device 1.

[0090] According to an embodiment illustrated in [Fig. 1], the radio frequency module 13 includes an output terminal 133 connected to a control module 14 of the electric load 3, the radio frequency module 13 being configured to deliver, to the control module 14, a control signal of the electric load 3.

[0091] The radio frequency module 13 comprises various elements, known to those skilled in the art and not shown, configured to receive and decode radio frequency signals representing control commands and optionally to transmit signals representing information on the input receiving terminal and / or output transmitting terminal 131. It may be a high-frequency amplifier-demodulator circuit, one or more microcontrollers or processors and / or any other equivalent means.

[0092] The control module 14 also includes various elements, known to those skilled in the art and not shown, configured to receive and decode signals representing instructions or control commands transmitted by the radio frequency module 13 and to emit control signals on the control output terminal 17 of at least one electrical load 3. This may be one or more microcontrollers or processors and / or any other equivalent means.

[0093] According to one embodiment, the radio frequency module 13 includes, in other words integrates, the control module 14 of the electric charge 3, for example in the same microcontroller or processor and / or in any other equivalent means.

[0094] The radio frequency module 13 is configured to cooperate with a remote device 4 as described above.

[0095] At least one output voltage of the power supply module 12 can be intended to power the control module 14 of the radio frequency signal control device 1.

[0096] The control module 14 is configured to execute the commands corresponding to the instructions transmitted by the remote device 4.

[0097] The control module 14 comprises several input, output, and / or input / output terminals, with a single input 141 and a single output 142 illustrated in [Fig. 1]. The control module 14 is specifically configured to control the electrical load 3 via the control output terminal 17 of at least one electrical load 3 of the radio frequency signal control device 1.

[0098] The radio frequency signal control device 1 is intended to be connected to the electrical load 3, as described previously.

[0099] According to the embodiment illustrated in [Fig. 1], the radio frequency signal control device 1 comprises at least one blocking circuit 18. The blocking circuit 18 comprises at least two input / output terminals 181, 182. The first terminal 181 is electrically connected to the second electrical conductor 22 via the second supply terminal 16. The second terminal 182 is electrically connected to the reference terminal 132 of the radio frequency module 13, and therefore to the electrical ground GND of the radio frequency signal control device 1.

[0100] The blocking circuit 18 electrically connects the second electrical conductor 22 to the reference terminal 132 of the radio frequency module 13, such that the blocking circuit 18 blocks radio frequency signals traveling from the second electrical conductor 22 to the reference terminal 132 of the radio frequency module 13 over a PdF frequency range that is asymmetric with respect to the predetermined BdF frequency band. In other words, the blocking circuit 18 is configured to block radio frequency signals traveling from the second electrical conductor 22 to the reference terminal 132 of the radio frequency module 13 over a PdF frequency range that is asymmetric with respect to the predetermined BdF frequency band.

[0101] Fig. 4 represents the current gain, or decibel gain GdB, of the radio frequency signal control device 1 as a function of the frequency f of the radio frequency signals which pass over the electrical conductor 21. On this Fig. 4, the frequency f is increasing from left to right and represented linearly and the frequency range PdF extends on either side of the frequency band BdF along the x-axis, asymmetrically with respect to this frequency band.

[0102] More specifically, the PdF frequency range exhibits a negative asymmetry in terms of frequencies, that is to say in frequencies, with respect to the PdF frequency band. By "negative", we mean that the asymmetry of the PdF frequency range with respect to the BdF frequency band induces that the PdF frequency range is much more extensive to the left of the BdF frequency band, i.e. towards the lower frequencies, than to the right of the BdF frequency band, i.e. towards the higher frequencies.

[0103] With reference to [Fig. 4], the asymmetric PdF frequency range comprises a first cutoff frequency fcl located below, i.e., to the left, the predetermined BdF frequency band and a second cutoff frequency fc2 located above, i.e., to the right, the predetermined BdF frequency band. The blocking circuit 18 is configured to block radio frequency signals between the first cutoff frequency fcl and the second cutoff frequency fc2, i.e., to reduce the decibel gain GdB to zero over the PdF frequency range.

[0104] Here, and as illustrated in [Fig.4], the negative frequency asymmetry of the PdF frequency range is characterized in that a distance L1 defining, along the frequency axis, the part of the PdF frequency range located to the left of the predetermined BdF frequency band, i.e. between the first cutoff frequency fcl and the median frequency fm of the predetermined BdF frequency band, is much greater, in particular much greater than a distance L2 defining the part of the PdF frequency range located to the right of the predetermined BdF frequency band, i.e. between the median frequency fm of the predetermined BdF frequency band and the second cutoff frequency fc2.

[0105] Advantageously, the L2 / L1 ratio is between 2% and 60%, preferably between 50% and 60%, preferably still in the order of about 55% when the median fm frequency is 433 megahertz.

[0106] Advantageously, the L2 / L1 ratio is between 2% and 30%, preferably between 20% and 30%, preferably still in the order of about 25% when the median fm frequency is 868 megahertz.

[0107] Advantageously, the L2 / L1 ratio is between 2% and 15%, preferably between 8% and 12%, preferably still in the order of about 10% when the median frequency fm is 2.4 gigahertz.

[0108] Let fc be a center frequency, intermediate between the first and second cutoff frequencies fcl and fc2. The center frequency fc is the average of the first and second cutoff frequencies fcl and fc2. We have the relation

[0109] fc = (fcl + fc2) / 2 (equation 1)

[0110] The center frequency fc is located at the same distance L3 from the two cutoff frequencies fcl and fc2, measured along the frequency axis in [Fig. 4]. This center frequency fc is located, along the x-axis of [Fig. 4], at a distance L4 from the median frequency fm of the BdF frequency band. The distance L4 is strictly less than the distance L3. We have the following relationship:

[0111] L3 = L2 + L4 (equation 2)

[0112] The frequency fc is the center frequency fc of a band-stop filter whose operation is, in a way known per se, symmetrical with respect to this center frequency.

[0113] The negative frequency asymmetry of the PdF frequency range with respect to the BdF frequency band, in particular with respect to the median frequency fm, is such that the first cutoff frequency fcl is much lower than the frequencies of the predetermined BdF frequency band, while the second cutoff frequency fc2 is slightly higher than the frequencies of the predetermined BdF frequency band.

[0114] Thus, the radio frequency signal control device 1 blocks radio frequency signals traveling from the second electrical conductor 22 to the reference terminal 132 of the radio frequency module 13 over the PdF frequency range, simultaneously allowing:

[0115] - to allow electrical energy to pass through the coupling circuit 11 low frequencies, below the cutoff frequency fcl, supplied by the DC power supply 2 to electrically power at least the electrical load 3,

[0116] - to block representative radio frequency signals with the coupling circuit 11 of electrical load control commands 3 to promote a differential mode between the receive input and / or the transmit input 131 and the reference terminal 132 of the radio frequency module 13, and

[0117] - to block parasitic radio frequency signals with the blocking circuit 18 in common mode on the PdF frequency range, between the cutoff frequencies fcl and fc2, to improve the transmit and / or receive performance of the radio frequency module 13.

[0118] Advantageously, the first cutoff frequency fcl has a value greater than 8 megahertz and strictly less than 13.56 megahertz, in particular between 8 megahertz and 12 megahertz, for example equal to about 10 megahertz.Thus, the radio frequency signal control device allows the electrical energy supplied by the DC power supply 2 to pass through, since the supply current includes signals at a frequency below 1 megahertz in the example, while blocking parasitic common-mode radio frequency signals generated, for example, by a device emitting short-range high-frequency communication signals, such as communication signals conforming to the NFC standard (acronym for the Anglo-Saxon terminology "Near Field Communication"), or by an energy transformation module of the DC power supply 2, whose switching frequency emits common-mode interference on the second electrical conductor 22.

[0119] Advantageously, the second cutoff frequency fc2 is positioned, along the x-axis of [Fig. 4], close to the BdF frequency band. In other words, the second cutoff frequency fc2 is slightly higher than the maximum frequency of the BdF frequency band, so as to block in the high frequencies only the radio frequency signals strictly necessary to create a differential mode between the receive input and / or the transmit output 131 and the reference terminal 132 of the radio frequency module 13. For example, when the frequency value of the predetermined BdF frequency band used for the transmission of radio frequency signals representing control orders is set around 868 megahertz, the second cutoff frequency can be set at 1 gigahertz.

[0120] According to a preferred embodiment of the invention, the blocking circuit 18 is a band-stop filter, also called a "band-stop filter" or "bell filter". The band-stop filter behaves symmetrically between the first cutoff frequency fc1 and the second cutoff frequency fc2, in other words, symmetrically with respect to the center frequency fc, the center frequency fc being strictly lower than the frequencies of the predetermined BdF frequency band, in particular much lower than the median frequency fm of the predetermined BdF frequency band.

[0121] According to a first embodiment of the blocking circuit 18, illustrated in [Fig.5], the blocking circuit 18 comprises a capacitor C31, a first inductance L31 and a second inductance L32. The capacitor C31 is electrically connected in parallel with the two inductances L31, L32 which are electrically connected together in series.

[0122] The two inductors L31, L32 and the capacitor are electrically connected in parallel between terminals 181 and 182 to form a parallel resonant circuit, also known as a "blocking circuit". The two inductors L31, L32 and the capacitor C31 of the blocking circuit 18 are sized so that the parallel resonant circuit blocks radio frequency signals between the first terminal 181 and the second terminal 182 in the PdF frequency range, which has a negative frequency asymmetry with respect to the predetermined BdF frequency band.

[0123] Thus, the distinction between the first inductance L31 and the second inductance L32 allows the use of standard and / or inexpensive electronic components.

[0124] The inductances L31 and L32 and the capacitor C31 of the blocking circuit 18 are sized so that the parallel resonant circuit blocks, between the first terminal 181 and the second terminal 182, radio frequency signals on the frequency range PdF exhibiting a negative asymmetry with respect to the predetermined frequency band BdF.

[0125] According to an unrepresented variant of the first embodiment of the blocking circuit 18, the two functional inductors L31 and L32 are grouped under The inductor takes the form of a single physical component, preferably surface-mount (SMD) type, combining low-frequency and high-frequency properties. This single SMD physical component is connected in parallel with a capacitor, forming a resonant circuit connecting terminals 181 and 182, following an approach comparable to that described above for the first embodiment. This variant has the disadvantage of using a non-standard inductor, which is therefore relatively expensive and difficult to source, but it results in good adaptability of the blocking circuit.

[0126] In a specific and / or particular case where the electrical load 3 consumes a particularly large amount of current, for example with an intensity greater than 10 amperes, generating low-frequency and high-frequency interference, it may be advantageous to preserve the ability of the radio frequency signal control device 1 to transmit and / or receive radio frequency signals representative of control commands in the predetermined BdF frequency band.

[0127] The third, fourth, and fifth embodiments of the invention are shown in Figures 6 to 9. In the following, elements analogous to those of the first embodiment of the radio frequency signal control device 1 bear the same reference numerals and function as explained above. If a reference numeral is mentioned in the description but not shown in one of Figures 6 to 9, or if shown in these figures but not mentioned in the description, it designates the element of the first embodiment bearing the same reference numeral.

[0128] In what follows, we mainly describe what distinguishes this third to fifth embodiment from the first embodiment.

[0129] In the third embodiment of the radio frequency signal control device 1, of the household electrical appliance 5 and of the electrical system 10 shown in Figures 6 and 7, the second supply terminal 32 of the electrical load 3 is not electrically connected directly to the second electrical conductor 22, but to a third terminal 183 of the blocking circuit 18, through a connecting line 238.

[0130] According to this third embodiment, the blocking circuit 18, illustrated in [Fig. 7], comprises a capacitor C32, a first inductance L33 referred to as a high-frequency inductor, and a second inductance L34 referred to as a low-frequency inductor, the second inductance L34 being separate from the first inductance L33. The first inductance L33 is electrically connected in parallel with the capacitor C32, such that the combination of the capacitor C32 with the first inductance L33 forms a resonant circuit. One end of the resonant circuit is electrically connected to the second electrical conductor 22 via the first terminal 181 of the blocking circuit 18, and a second end of the circuit The resonant circuit is electrically connected to the reference terminal 132 of the radio frequency module 13, that is, to the first ground (GND) of the radio frequency signal control device 1, via the second terminal 182 of the blocking circuit 18. The second inductor L34 electrically connects the first end of the resonant circuit to the third terminal 183 of the blocking circuit 18. The second supply terminal 32 of the electrical load is thus electrically connected to a second ground (GND2) of the radio frequency signal control device, this second ground (GND2) being separate from the first ground (GND). The second ground (GND2) is referred to as the "analog ground," while the first ground (GND) is referred to as the "digital ground."

[0131] Advantageously, the second electrical mass GND2 is connected to the connecting line 238.

[0132] Thus, the quantity of current flowing from the first electrical conductor 21 to the second electrical conductor 22 is divided between the first inductance L33 and the second inductance L34, so that most of this quantity of current passes through the second inductance L34, thereby improving the radioelectric performance of the radio frequency signal control device.

[0133] In the fourth embodiment shown in [Fig. 8], the poles of the DC power supply 2 are reversed compared to the first embodiment, with the first electrical conductor 21 connected to the negative terminal "-" of the DC power supply 2 and the second electrical conductor 22 connected to the positive terminal "+" of the DC power supply. According to this fourth embodiment, the radio frequency coupling between the DC power supply 2 and the radio frequency module 13 is therefore achieved on the first electrical conductor 21, which is electrically connected to a negative terminal "-" of the DC power supply 2. The coupling circuit 11 is thus connected to the negative terminal "-" of the DC power supply 2 via the first conductor 21.The second terminal 112 of the coupling circuit 11 is electrically connected directly to the electrical ground GND of the radio frequency signal control device 1, without going through the decoupling capacitor Cl, while the second terminal 182 of the blocking circuit 18 is electrically connected directly to the second supply terminal 122 of the power supply module 12, also without going through the decoupling capacitor CL.

[0134] According to this fourth embodiment, the blocking circuit 18 electrically connects the second electrical conductor 22 to the reference terminal 132 of the module radio frequencies 13 via the decoupling capacitor Cl. The electric load 3 and the power supply module 12 are, according to this fourth embodiment, polarized in reverse with respect to the first embodiment and third embodiment of the radio frequency signal control device 1. Thus, the terminal 31 of the electric load 3 and the terminal 121 of the power supply module 12 constitute negative power supply poles, while the terminal 32 of the electric load 3 and the terminal 122 of the power supply module 12 constitute positive power supply poles.

[0135] In the fifth embodiment shown in [Fig. 9], the blocking circuit 18 is as shown in [Fig. 7] and connected to the electrical load 3 as in the third embodiment, while the poles of the DC power supply 2 are reversed compared to the first embodiment, as in the fourth embodiment. In other words, the fifth embodiment differs from the first embodiment by the cumulative differences of the third and fourth embodiments compared to the first embodiment.

[0136] Another object of the invention is a domestic electrical appliance 5 intended, for example, for thermal, visual, or lighting comfort, solar protection, and for closing and / or securing a building or its surroundings. The domestic electrical appliance 5 is intended to be electrically connected to the direct current power supply 2 via the first electrical conductor 21 and the second electrical conductor 22 and comprises a radio frequency signal control device 1 as described above, as well as an electrical load 3. According to the embodiments shown in the figures, the electrical load 3 is integrated into the domestic electrical appliance 5. According to an alternative embodiment, and as envisaged above, the electrical load 3 is located outside a housing of the domestic electrical appliance 5, while still forming part of that appliance.

[0137] Another object of the invention is a domestic electrical system 10 which includes the DC power supply 2, the remote device 4 and the domestic electrical appliance 5 as described above.

[0138] Within the domestic electrical system 10, the domestic electrical appliance 5 is arranged to cooperate with the remote device 4 via the radio frequency signal control device 1. The remote device 4 is configured to transmit at least radio frequency signals representing control instructions to be executed by the electrical load 3.

[0139] The different embodiments and variants defined above can be combined to generate new embodiments of the invention.

Claims

1. Demands Radio frequency signal control device (1) of an electrical load (3) of a household electrical appliance (5), the radio frequency signal control device (1) and the electrical load (3) being supplied with electrical energy by a first electrical conductor (21) and a second electrical conductor (22) electrically connected to a direct current power supply (2), the radio frequency signal control device (1) comprising: - a radio frequency module (13) capable of receiving and / or transmitting radio frequency signals in a predetermined frequency band (FB), the radio frequency module (13) comprising a receive input and / or a transmit output (131) and a reference terminal (132), - a coupling circuit (11), the coupling circuit (11) electrically connecting the first electrical conductor (21) to the receive input and / or transmit output (131) of the radio frequency module (13) and being configured to separate certain radio frequency signals carried by the first electrical conductor (21) in the predetermined frequency band (FB), from other radio frequency signals carried by the first electrical conductor, and to direct the radio frequency signals separated from the other radio frequency signals to the receive input and / or transmit output (131) of the radio frequency module (13), and - a blocking circuit (18) electrically connecting the second electrical conductor (22) to the reference terminal (132) of the radio frequency module (13) and configured to block radio frequency signals flowing from the second electrical conductor (22) to the reference terminal (132) of the radio frequency module (13) over a frequency range (PdF) exhibiting a negative frequency asymmetry, with respect to the predetermined frequency band (BdF).

2. Radio frequency signal control device (1) according to claim 1, characterized in that the radio frequency signal control device (1) further comprises a power supply module (12), in that the coupling circuit (11) electrically connects the first electrical conductor (21) to a first terminal (121) of the power supply module (12), such that the coupling circuit (11) blocks, at least on the predetermined frequency band (FB), the electrical signals flowing from the first electrical conductor (21) to the first terminal of the power supply module (12), and in that a second terminal (122) of the power supply module (122) is electrically connected to the reference terminal (132) of the radio frequency module (13) to electrically supply at least one module (13, 14) of the radio frequency signal control device (1).

3. Radio frequency signal control device (1) according to claim 1 or according to claim 2, characterized in that the frequency range (PdF) is delimited by a lower limit (fcl), the value of which is between 8 megahertz and 13.56 megahertz, preferably between 8 megahertz and 12 megahertz, preferably also equal to about 10 megahertz.

4. A radio frequency signal control device according to any one of claims 1 to 3, characterized in that the blocking circuit (18) comprises a capacitor (C31), a first low-frequency inductor (L31) and a second high-frequency inductor (L32) distinct from the first inductor (L31), the first inductor (L31) and the second inductor (L32) being electrically connected together in series and electrically connected together in parallel with the capacitor (C31), such that the combination of the capacitor (C31) with the first inductor (L31) and the second inductor (L32) forms a resonant circuit electrically connecting the second electrical conductor (22) to the reference terminal (132) of the radio frequency module (13), and blocking the electrical signals flowing from the second electrical conductor (22) to the reference terminal (132) over the frequency range (PDF).

5. A radio frequency signal control device according to any one of claims 1 to 3, characterized in that the circuit blocking (18) comprises a capacitor and a single inductor, preferably of the surface-mounted component type, combining low-frequency and high-frequency properties and electrically connected in parallel with the capacitor, such that the combination of the capacitor with the single inductor forms a resonant circuit electrically connecting the second electrical conductor (22) to the reference terminal (132) of the radio frequency module (13), and blocking the electrical signals flowing from the second electrical conductor (22) to the reference terminal (132) over the frequency range (PdF).

6. Radio frequency signal control device according to any one of claims 1 to 3, characterized in that the blocking circuit (18) comprises a capacitor (C32), a first inductance (L33), referred to as high-frequency, and a second inductance (L34), referred to as low-frequency, distinct from the first inductance (L33), the first inductance (L33) being electrically connected in parallel with the capacitor (C32),such that the combination of the capacitor with the first inductor (L33) forms a resonant circuit electrically connecting the second electrical conductor (22) to the reference terminal (132) of the radio frequency module (13) and blocking the electrical signals flowing from the second electrical conductor (22) to the reference terminal (132) over the frequency range (PdF), and in that the second high-frequency inductor (L34) is electrically connected between a second end of the resonant circuit and a terminal (183) of the blocking circuit intended to be connected to the electrical load (3) of the household electrical appliance (5).

7. Radio frequency signal control device according to claim 6, characterized in that a first end of the resonant circuit is electrically connected to a first electrical ground (GND), itself electrically connected to the reference terminal (132) of the radio frequency module (13) and in that the second high frequency inductance (L34) is connected, opposite the resonant circuit, to a second electrical ground (GND2), distinct from the first electrical ground.

8. Domestic electrical appliance (5) comprising at least one electrical load (3) and a radio frequency signal control device (1) according to any one of claims 1 to 7.

9. Domestic electrical system (10) comprising a domestic electrical appliance (5), a DC power supply (2) for the domestic electrical appliance and a remote control device (4), characterized in that the domestic electrical appliance (5) is according to the preceding claim and in that the radio frequency signal control device (1) is configured to receive radio frequency signals representative of control instructions issued by the remote control device (4).

10. Domestic electrical system according to claim 9, characterized in that the DC power supply source (2) is supplied by a domestic DC power supply network, or by a battery.

11. Domestic electrical system according to claim 9 or according to claim 10, characterized in that the direct current power supply (2) comprises a photovoltaic panel disposed externally to the domestic electrical appliance and in that the radio frequency signal control device (1) further comprises a rechargeable battery disposed inside the domestic electrical appliance (5) and electrically connected to the power supply module (12), the rechargeable battery being configured to be recharged by the electrical energy supplied by the photovoltaic panel.

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