FR2612657A1 - Method for managing an electrical installation and device for implementing it - Google Patents

Abstract

A management unit 8 receives input signals which are representative of utilisation parameters of the installation and derives control signals which it transmits on the electrical power supply network S of the installation, in at least one specific frequency channel, towards receiver devices 11a, 11b, 112 associated with functional elements 3, 4, 5 the operational state of the latter. The management unit 8 receives the input signals across the electrical power supply network S of the installation, from transmitter devices 112, 12b to 12d which have been connected to the network S. Use in the management of domestic electrical installations by telephone.

Description

 The present invention relates to a method for managing an electrical installation and a device for implementing this method.

 According to FR-A-2 584 542 a system is connected to a meter-circuit breaker, and requiring installation to several electrical outputs so as to connect and disconnect selectively.

 It is also known, for example from FR-K-2 541 0, EP-23254 or FR-A-2 404 326, collective energy distribution installations in which. from the distribution station, the consumer devices of the users are selectively allowed to operate by signals of specific frequency transmitted by the power line itself.

 At the domestic level, the use of such an order transmission method avoids the need for multiple starts from the circuit breaker. However, the implementation of such a system would still require to insert a control box in the home network in the vicinity of the meter-circuit breaker installation. In addition, if the management of the installation must take into account the parameters of being different functional units of this facility, specific means must be provided to bring the corresponding information back to the box.

 The object of the present invention is to provide a method and a device for managing a home installation, which is very easy to implement, whether the installation is new or pre-existing.

thus in the method of the invention, a management unit receives input signals representative of plant utilization parameters and generates control signals which are transmitted on the power supply network of the installation, in at least one specific frequency channel, to receiving devices associated with functional organs of
the installation so as to modify the operating state of these.

According to the invention, this process is characterized in
what the management unit receives the input signals to
through the power supply network of
the installation from the sending devices that we have
connected to the network.

Thus, there is no specific wiring to the
transmission of information from issuers. from
when, the control box is not even necessarily
mounted in a predetermined location such as in the vicinity of
counter-breaker. It can be plugged into any point of the installation, permanently or removably, for example on a power outlet of the installation. The
method according to the invention thus makes it possible to manage a
installation without complicating it.

According to a first advantageous characteristic
of the invention, at least one of the emitting devices,
connected to a detector, address spontaneously, in a
frequency channel reserved for it, input signals
priorities to the management unit.

Priority input signals, corresponding
for example an alarm detection, are taken into account
immediately by the management unit. They are transmitted in
reliability in a specific frequency channel without
interference with another signal.

Most of the time, management can be done
automatically after programming the unit of
management. However, according to a second characteristic
advantageous of the invention, it is also provided
possibility of controlling the exchange of signals between
different functional bodies of the facility and the unit
management system from a videotelephone terminal connectable on the one hand to a telephone network autocommuted
and on the other hand to the electrical network of the installation by an appropriate interface unit.

 Thus, from a second videotele communication terminal. for example of identical type to the first and itself connected to the telephone network autocommuted, one can manage the remote installation. As a videotelephone terminal, it is advantageous to use a standardized type of apparatus such as that known under the name of MINITEL. The use of such a terminal also makes it easy to program, locally or remotely, the management of the electrical installation. It is also possible, from the screen of the video communication terminal, to visualize the states of the functional organs of the installation.

 According to the invention also, the device which allows the implementation of the aforementioned method, is characterized in that it comprises a management unit having a network output connectable at any point of the electrical network of the installation> this unit of management being adapted to deliver on its network output control signals which are selectively sensitive receiving devices connected in series with the functional organs of the installation and upstream thereof to change the operating state of these organs, and adapted to receive, memorize and interpret measurement and signal signals from emitting devices connected in series with other functional organs of the installation and upstream thereof.

 Thus, the device according to the invention has only one network output through which the input and control signals pass. There is no wiring specific to the transmission of these signals, so it is very easy to incorporate such a device in an existing domestic electrical installation. Furthermore, the transmitter and receiver devices are also simple to implement and we can consider using them only momentarily, for example depending on the weather conditions. The management device according to the invention is therefore an anise implementation flexible and fast.

 According to an advantageous embodiment of the invention, the management unit is connectable to the peri-computing socket of a videotelecommunication terminal, itself connectable to a telephone network autocommuted.

 Other features and advantages of the invention will become apparent from the following description.

In the accompanying drawings, given by way of non-limiting examples
FIG. 1 is an overall block diagram illustrating a device according to the invention for managing a domestic electrical installation,
FIG. 2 is a block diagram of the management unit of the device of FIG.
FIG. 3 is a block diagram of a simple type receiver device,
FIG. 4 is a block diagram of a receiver device with a thermostat-type setpoint,
FIG. 5 is a block diagram of a thermometer-type transceiver device,
FIG. 6 is a block diagram of a transmitter device of the current sensor type,
FIG. 7 is a block diagram of a detector type emitter device,
FIG. 6 represents time diagrams illustrating, on the one hand, the mode of transmission of the signals between the management unit and a transmitting-receiving device, and, on the other hand, the mode of sequencing of these signals;
FIGS. 9 and 10 illustrate the use of the screen of a videotelephone terminal connected to this management unit of FIG. 2 for the programming of this management unit,
FIGS. 11 to 21 are flowcharts illustrating the programming of the management unit microprocessor.

 The example that goes between described relates to a single-phase domestic installation.

 This installation comprises (FIG. 1) a meter 1 connected upstream to the public distribution network R and in downstream via a differential circuit breaker 2, at various consumption points such as power outlets for supplying electrical appliances. Z and heaters 4, 5. This installation also includes measuring sensors such as a current sensor 6 connected to the circuit breaker 2 downstream thereof.

 The current sensor 6 makes it possible to continuously measure the total current called by the installation and it will be seen later that the information that it delivers can be used to enable the implementation of the "1delestage" function of the management device. according to the invention.

 The installation also includes a relay 7 connected to the counter 1. This relay 7 is sensitive to various signals conveyed by the network R and whose frequency is different from the frequency of distribution and function of the current energy tariff. The output of the relay 7, called the EJP "peak days erase relay, is selectively activated in response to a first signal, referred to as the" notice "signal, and in response to a second signal or rate change signal which succeeds the first with a delay of about ten minutes.

 According to the invention. the aforementioned installation is equipped with a management device which comprises a management unit 8 having a network output 9 connectable at any point of the electrical network S of the installation, symbolized by the letters P (phase) and N (neutral) ), for example by means of a plug connector 10 compatible with domestic installation socket bases.

 The management unit 8 comprises means for delivering on its network output 9 control signals to which are selectively sensitive receiving devices 11a, 11b, 112 connected in series with certain 3, 4, 5 of the aforementioned functional organs of the installation and upstream of these to change the operating state of these bodies. The management unit also comprises means designed to receive memorize and interpret measurement or signaling signals emanating from emitting devices 112, 12b, 12C! 12d connected in series with other functional organs 5, 6, 7, B of the installation and upstream of these. The device 112 is therefore a transceiver. Moreover, the transmitters, receivers, and transceivers 11a, 12b, 12b, 12d, 112 have a plug-in socket 13 in a socket socket of the installation while some of between them 11a, lib and 112 comprise a socket base 14 adapted to receive a plug of the associated functional organ.

 According to the invention, the aforementioned means are implemented to manage the installation in a centralized manner, that is to say to send on-stop order commands to simple type receiving devices such as that associated with the devices. 3 or setpoint such as that 11b thermostatically regulating the functional members 4, set remotely set values determining the operation of the aforementioned members 4, refer to transceiver devices such as 112 associated with the organs 5 to obtain the values measured by its measuring sensor and process alarms or other information emanating from transmitters 12b, i2c, and i2d.

 According to an advantageous aspect of the invention, the management unit 8 is programmable from a videotelephone terminal 15. The unit 8 is then connected to the peri-computing outlet of the terminal 15. This type of terminal equipped with a screen and keyboards is known in itself. It is for example commonly used in France under the name MINITEL and includes in particular an integrated modem that allows its connection to a telephone network 16 autocommuted via a telephone set 17 and a connection socket 18 to the network 16. The terminal 15 which is a standardized type of device> thus allows easy programming of the management unit 8 both local and remote! for example from any site itself equipped with a videotelephone terminal 19 connected to the network 16 by a telephone device 2.

 We will now describe the unit 8 and the different types of associated receiving devices and / or transmitters.

 The management unit 8 comprises (see FIG. 2) a microprocessor central unit 21 operating in connection with a memo user program 22, a system program memory 23 and a clock 24. The management unit 8 is powered by a supply circuit 25 connected to the network S by the socket 10. A backup circuit 25a connected downstream of the circuit 25 saves the memories 22 and 23 and the clock 24 in case of interruption of the normal power supply. The plug 10 is also connected to the network output 9 of the management unit 8 and to a second power supply circuit 26 on which the power cord 15a of the videotelephone terminal 15 is removably connected.

 The second power supply circuit 26 further comprises a control input 26a connected to the microprocessor 21 so that it controls the establishment or interruption of the power supply to the terminal 15, depending on whether the terminal 15 is used (for example to program unit 8) or not used.

The microprocessor 21 is furthermore connected to the peri-computing receptacle 15b of the terminal 15 via an adapter interface circuit 27 known in itself and to a function switch 28 which makes it possible to activate the connection between the microprocessor 21 and the terminal 15. More explicitly, this function switch 28 of the management unit 8 comprises the following four positions
- Videotelecommunication terminal 15 out of tension
terminal 15 under voltage but used independently of the management unit 8.

terminal 15 under voltage and used in conjunction with the management unit 8 for local programming thereof
terminal 15 under voltage and used in conjunction with the unit 8 for remote programming thereof.

 Finally, the microprocessor 21 is connected to the network output 9 of the management unit 8, on the one hand via a coding circuit 29 and a transmission interface circuit 30 and on the other hand. on the other hand via two decoding circuits 31 and 31a and two reception interface circuits 32! 32a.

 Between the outputs of the transmit and receive interface circuits 30, 32 and 32a and the network output 9 is respectively interconnected a capacitor 33a which isolates these circuits from the AC network S. The interface circuits 30, 32 and 32a also comprise on the one hand opto-electronic components for the galvanic isolation of the microprocessor 21 and on the other hand impedance matching circuits with the network S.

The coding circuit 29 and the exit interface circuit 0, known in themselves, are designed to deliver on the network output 9 of the management unit 8! according to a pre-established programming of the microprocessor 21, the receiver device control signals in the form of pulse trains which modulate a carrier wave of frequency between BS kHz and 150 kHz adapted to transit on the network S, or classic way in all-or-nothing mode, in so-called FSK mode (from the English "Frequency
Shift eying).

 The transmission of the control signals by the network itself is particularly advantageous since it makes it possible to overcome a specific targeted link which generally poses implementation problems when equipping an existing domestic installation and which does not is not insensitive to disturbances. The signal transmitted on the network whose duration does not exceed one second, does not disturb the operation of household appliances or radio devices given the frequency and the relatively short duration of the emission and especially the low power level of the carrier wave which does not exceed 5mW.

 It has also been verified according to the invention that the transmission of the signal was not affected by the noise produced by the appliances or by the operation of appliances comprising motors with capacitors.

 Correlatively, the aforementioned pulse trains are encoded according to the receiving receiver device.

More particularly, each pulse train is encoded using four 3-state (0, 1 or high impedance) address bits and five two-state data bits.

The use of four address bits at Z. states provides 81 coding possibilities. Thus, the receiving devices, the management unit 8 the sending devices and the transceiver devices are each associated with a four-bit address of their own, and that the user can himself fix.

 The data bits make it possible to determine the nature of the command sent by the management unit B or to transmit on the network an analog value corresponding, for example, to a thermostat setpoint value or to a measurement such as a temperature measurement. . Thus, for a simple type receiver device 11a intended to receive an ON-type command, only one bit is useful, the other bits being arbitrarily set to 0 or 1. For a thermostat-type receiver device Ilb, the set value is encoded on 5 bits, while a stop command for this receiving device is encoded by the zeroing of these five bits.

 On their side, the receiving interface circuits 32, 32a and the decoding circuits 31, 31a, also known themselves, are designed to transform the pulse trains emanating from the emitting devices 112, 12b to 12d into actionable signals. by the microprocessor 21.

 For this purpose, the receiving interface circuits 32 32a each in particular comprise a selective filter tuned to a distinct carrier wave frequency to eliminate the spurious signals of a different frequency from that of this carrier wave which may disturb the transmission, and a frequency detector circuit which outputs at the output of the corresponding interface circuit the signal in the form of a series of pulses, that is to say in the form that it has at the output of the coding circuit 29. signal delivered by the frequency detector circuits of the receiving interface circuits 32, 32a then transits respectively by the decoding circuits 31, 31a, which output logic information usable by the microprocessor 21 which represents an input signal under a shape identical to that of a control signal at the output of this microprocessor.

 The interface circuits 30, 32 and 32a are respectively connected to the microprocessor 21 by a control link 21a, 21b, 21c conveying the receive or transmit commands of the microprocessor 21 to the interface circuits.

 A simple type receiver device 11a comprises at the input (see FIG. 3) isolation capacitors 35 with respect to the network and a selective filter 34 tuned to the frequency of the carrier wave. In parallel on the input of the receiver 11a are also connected a supply circuit 34a and a protection circuit 35a against the overload of this receiver. The filter 34 is connected to a frequency detector circuit 36 which outputs the control signal from the unit 8 in the form of a series of pulses coded by means of the aforementioned address and data bits. The detector circuit 36 is itself connected to a decoding circuit 37 operating in connection with an address selector circuit 38 for outputting a signal to which a control circuit 39 is responsive to selectively short-circuit or isolate the moon of 1 other its output terminals 39a and 39b connected to the phase of the network S and the other to one of the supply terminals of the functional member 3 controlled by the receiver device 11a. The other terminal of the organ r. is connected to the neutral of the network S via internal conductors of the device 11a.Thus, according to the value of the useful data bit of the signal transmitted by the decoding circuit 37, the circuit 9 controls the start or stop of the functional organ 3.

 In FIG. 4, the block diagram of a receiver device 11b with a thermostat-type setpoint is shown.

The input circuits of this receiver device iib are identical to those of the receiver device 11a and carry the same ref erences. The output of the decoding circuit 37 is connected to a digital-to-digital converter 40 which converts the digital reference information contained in the control signal from the management unit 8 into an analog setpoint. This analog set point value is applied to an input of a comparator circuit 41 whose other input receives, via an amplifier circuit 42, a temperature value measured for example by a probe 43 in the room heated by the function member 4 associated with the receiving device 11b considered.The output of the comparator circuit 41 is applied to a control circuit 44 so that it selectively short-circuits or isolates its terminals from each other. outputs 44a and 44b connected to the phase of the network S and the other to one of the power supply terminals of the heating element 4, the other terminal is connected to the neutral of the network S by internal conductors of the device Lib.

 Depending on the result of the comparison between the set value and the measured temperature value, the control circuit 44 is activated or not to control or interrupt the operation of the member 4. Optionally a contact 45 detecting the opening of a enter the room to be heated acts on the control circuit 44 to interrupt the operation of the heater 4 regardless of the result of the comparison.

Figure 5 is a block diagram of a transceiver device 112 of the thermometer type. This transceiver device comprises a control signal receiving circuit 4! 36, 37 7 similar to that of the receiver i la
The transmitter-receiver device 112 also comprises a coding circuit 46 connected to a transmission interface circuit 47 whose output is applied to the network S via isolation capacitors 48. The coding circuits 46 and 47, of identical design to that of the coding circuits 29 and transmission interface 3s) of the unit 8, are intended to transmit on the network S a value measured by a detector 49 such as a detector of For this purpose, the detector 49 is connected to an amplifier circuit 50 itself connected to the input of the coding circuit 46 via a digital analog converter circuit 51. Another input of the coding circuit 46 is connected to a sequencing circuit 52 itself connected to the decoding circuit 37, this sequencing circuit 52 being designed to manage the signal exchanges between the management unit 8 and the transceiver device considered a ma which will be described later.

 In the example shown, the decoding circuit 37 drives a control circuit 39 driving a connected functional element 5 like the member 3 in FIG.

 The transmitting device 12b associates with the current sensor 6 comprises (see FIG. 6) an amplifier circuit 53 to the input terminals of which the sensor 6 is connected, this amplifying circuit being connected to an input of a comparator circuit 54 whose other input is connected to a setpoint selector device 55.

 The output of the comparator circuit 54 is connected to a coding circuit 56, itself connected to a transmission interface circuit 57, these two circuits 56, 57 being designed to deliver on the network S a toothed signal intended for the unit. 8 and containing the result of the comparison between the value measured by the current sensor 6 and the value displayed on the setpoint selector 55.

 For this purpose, the output of the transmission interface circuit 57 is connected to the network S via isolation capacitors 58. Moreover, a power supply circuit 59 connected to the network S is provided for the power supply. of the transmitting device in question.

 The emitting devices 12c> 1Zd (FIG. 7) associated respectively with the EJP relay 7 and with the alarm contact 8 each comprise a monostable circuit 6O connected to the terminals of the relay contact EJP or respectively of the alarm contact. The monostable circuit 60 is connected to a coding circuit 61, itself connected to a resigning interface circuit 62 connected to the network S via capacitors 63. As above> these coding circuits 61 and 62 are designed to address the management unit 8 via the network 8! EJP contact information or alarm contact activated. A power circuit 64 saved by a backup circuit 65 provides power to the transmitter considered.

 All signals emanating from the management unit 8 or from a transmitting device are repeated several times.

In order for a signal sent by the management unit 8 or by a transmitting device to be taken into account by the recipient of this signal, the first transmitted signal must be confirmed by a second signal identical to the first signal. In addition, the receiving circuits of the receiving devices are designed to store any received signal until a new signal is received.

 Two types of arrangements avoid interference between signals transmitted over the network.

 On the one hand, a specific frequency is assigned to each priority transmitter In the example, the transmitter 12d takes precedence The emission of an alarm signal, called a priority signal, by the transmitter device 12d associated with the contact alarm, is done immediately and spontaneously, that is to say without prior authorization of the unit 8 by using a modulated carrier wave frequency 90 kHz, while the other signal transmissions performed by the management unit 8 or other transmitter devices will be made using a 120 kHz carrier wave.

This allows the alarm signal to be transmitted correctly together with 120 kHz signals from the S unit or other transceivers.

 The signals 90 kHz and 120 kHz are processed at the unit 8 by separate receiving interfaces 32, 32a whose filters are correspondingly tuned. In variants, the alarm signal emitted by the transmitting device 12d will not be coded but more simply modulated into a pulse by a fixed frequency signal. The detection of such a signal by the management unit 8 will be facilitated.

 On the other hand, according to the second provision provided for avoiding interference, the management unit 8 manages the exchange of information with the other non-priority transmitters 112, 12b, 12c. So! the emitters 112 (thermometers)! 12b (current sensor) or 12c (EJP relay) only emit on request from the management unit 8 is punctual! either in a predetermined manner according to a pre-established programming thereof.

 The measurement values transmitted by the emitters 112 and 12b may be displayed on the screen of the terminal 15.

 FIG. Bs depicts time diagrams illustrating an exchange of signals between the management unit B and the transceiver device 112. The first diagram VIIIa is that of the message sent by the management unit 8. The latter comprises a demission request signal DE (repeated at least twice) containing the AER address of the transceiver and a datum D1 indicating that the corresponding signal is a transmission request, as well as a DAE signal of art request d transmission containing the AER address of the transceiver and a data item D2 indicating that the corresponding signal is a request to stop transmission.

 The diagram VIIIb represents the input message M sent by the transceiver device 112. This message (repeated at least twice) comprises the AUG address of the management unit 8 and a data item D3 indicative of the value measured by the device 112. The diagram VIIIc illustrates the transmission sequencing seen from the management unit 8, and the diagram VIIId illustrates the transmission sequencing seen from the transceiver 112. This sequencing is managed at the transceiver device 112 by the sequencing circuit 52.

 According to the diagram YIIIc, the management unit R after its messages DE and DAE, respects a silence S1 enabling it to receive the messages M from the transceiver 112. According to the diagram VIIId, the transceiver 112 observes a silence S2 during the DE and DAE messages of the unit 8, then a silence S before starting to send its messages M, the last delay imposed by the sequencing circuit 52 avoiding a simultaneous transmission of the unit 8 and the device 112.

 The management device according to the invention further comprises a filter 66 connected downstream of the circuit breaker 2 and upstream of the management unit 8 to mitigate the disturbances that can be generated by a similar device operating in the vicinity.

In the example, the microprocessor 21 of the management unit 8 is programmed for, independently of the videotelephone terminal 15
- send orders on-line via the network
S, to the receiving devices 11a, for example according to a pre-established time schedule of the management unit 8, or to the transceiver devices 112 as a function of the measurements made by these devices 112 and addressed to the unit 8
modifying the set values of the receiving devices 11b, for example according to a time schedule,
processing the current sensor signals 6 "and EJP relays 7" of the emitting devices 12b and 12c in order to relieve the power supply of certain functional elements of the installation, for example the functional unit 3 and / or 4 when an instruction current is exceeded or when the EJP signal is detected. These load shedding orders are sent to the receivers 11a and 11b.

The user fixes programmatically the functional organs which will be thus relieved in each case,
- Firstly treat the alarm signal emanating from the transmitter device 12d and for example trigger in response, via the network S and a receiver such as lia or ib, a visual or audible signaling in a predetermined location of the installation.

The microprocessor 21 is also programmed for, in conjunction with the terminal 15
- Allow time programming of the management unit 8, that is to say, to ensure that the commands generated by this unit 8 are issued according to a pre-established schedule. This programming can be done either locally at the level of the installation itself or remotely via the autocommuted network 16 and a second terminal 19. For this purpose, the microprocessor 21 is programmed to
to scan the peri-computing socket 15b of the terminal 15,
- scan the function switch 28 of the management unit 8,
- scan the ringing detector "telephone apparatus 17" of the terminal 15,
- allow to control certain receivers directly, that is to say outside programming,
send messages to the terminal corresponding for example to measurements or signals emanating from the sending devices.

In addition, advantageously, it will be possible to program the microprocessor 21 in addition to
If necessary using subsidiary peripheral devices, allow the use of the terminal 15 in
telephone polluter by polling a telephone pulse detector connected to the telephone device 17,
an answering-recorder, a presence simulator or a game console provided that the management unit 8 is connected to a peripheral device for reading the cassette player type
- electronic diary and self-maintenance device of the unit 8.

 The main microprocessor programming loop 1 distributed in FIGS. 13 to 15 in the form of partial logic diagrams is sufficiently short to never take a significant delay on a physical event. B and C in Figures 13 and 14, 14 and 15, respectively, indicate the points by which the partial logigrams are connected together to give the complete logic diagram.

 The role of this main loop is to test the functions chosen by the user by means of the switch 28 and the terminal 15 and to call the corresponding processing programs (program elements represented in FIGS. 16 to 21 in the form of logigrams).

These elementary processing programs are divided into interrupted operations according to a programming technique known per se, to maintain a rather short main loop.

Moreover some fast inputs (alarms)
are managed by interruption. The interrupt memorizes
the entry into a pile. Information Management
corresponding is performed by the main loop and the
elementary programs so the interruption is
as short as possible.

Each elementary operation is indicated by a pointer such as DO to D4 (see FIGS. 16 to 21) which contains information relating to the address of the beginning of this operation. In addition, some operations use a screen page of the terminal 15. The pages used are
the page N1 for the main use menu of the management unit 8,
- page N2 for the main menu of
programming,
- page N3 for a message from the responder to the caller.

The programming procedure of the unit of
management 8 from the terminal 15 will now be
described in particular with reference to FIGS. 9 and 10.

This procedure uses the eight active function keys of the terminal 15, i.e. the keys
Peg-Correction-Correction-50mm-Guide-Send-Return (see Figures 9 and 10). The user moves the cursor to the zones to be programmed using 4 of the function keys. Non-programmable zones are inaccessible to the cursor, To modify the programming, it is necessary to
- delete the previous programming with the keys Cancel or Correction.

 - enter the new programming from the keyboard.

 - confirm this programming with the Send key.

 An error message indicates anomalies in the programming. In this case> programming is not taken into account.

The access of the inverter Run-rrEt terminal 15 is protected to avoid innoportune interventions. At power-up the system asks for the date and proposes the following choice
t. Change of the access code to the programming.

 2. Main menu.

 The change of the access code to the programming uses a conventional procedure known in itself. A new access code cancels the previous one.

You access the main menu by
- The inverter Start-Stop terminal 15. In this case, the system is initialized and any previous programming is lost.

 - The function switch 28 when the system is already running; in this case the programming is kept.

 Whichever function you choose, Unit B provides date and time management and scheduler function. On the other hand, the functions of programming, control, answering machine, game console. the calendar, taxing and remote maintenance implement the terminal 15.

 In Figures 9 and 10, the example of a time schedule is given.

The introduction of a valid user code gives access to several programming options, that is to say
1. Definition or change of location of receptors.

 2. Weekly programming.

 r, Exceptional schedule.

The first function allows to display and change (see Figure 10)
- the list of locations,
- the type of receiver implanted in a location and identified by a number that indicates the function of the receiver (on-stop-thermostat) and a letter that gives the code to which it reacts,
- the type of programming that has been done on this receiver: weekly or exceptional programming, or both,
In weekly programming, the user can program 5 ignition zones for each day of the week. The first screen page of this option lists the short codes of the locations and asks you to enter the one to be programmed. This entry gives access to the screen of Figure 9. The upper part of this screen page gives a simplified diagram of the ignition ranges according to the days of the week. The lower third of the aforementioned page gives, in addition to the method of programming, the 5 hours of ignition and extinction that have been or can be programmed for the selected day.

 In exceptional programming by date; the user can program ten ignition ranges over a period of one year. The choice of an exceptional program partially cancels out the weekly programming.

 The direct command menu requests the abbreviated code of the receiving device concerned and the state in which its output should be. The direct command has priority over all other schedules. It will be used for maintenance or exceptionally by the user.

 In remote control, via the autocommuted telephone network 16, the management unit 8 turns on the terminal 19 and sends a connection request to the attention of the terminal 20 of the correspondent. He is then invited to enter the terminal 19, his access code.

If the management unit 8 validates said code, all the local programming possibilities are authorized remotely.

 The other functions of the management unit 8 will not be described in detail. They are only intended to make the terminal "intelligent" and have no direct relationship with the management of an electrical installation.

In other words, the coupling management unit 8 - terminal 15 which manages the electrical installation is used to open the user additional possibilities such as those mentioned above (gaming console simulator, etc.).

 Due to the use of a videotelephone terminal such as MINITEL, the device according to the invention has the advantages of not requiring external memory support, to allow remote management without the addition of a modem and elaborate programming. Its relatively low cost compared to that of a conventional computer with a control interface and its conventional protocol make it very well suited for home use.

 Moreover, the device according to the invention does not consume a telephone tax except in remote programming where the rate of the call is identical to that of a normal telephone call. In local use, the phone is not monopolized. Likewise, without programming, the terminal 15 can be used for other functions.

 The implementation of a remote control by "power lines" associated with a powerful programmer provides a device for managing a reliable and easy installation.

 The invention is in no way limited to the example described. For example, the function "load shedding" enabled by the current sensor 6 can omitted zebra.

Claims (16)

 A method for managing an electrical installation in which a management unit (8) receives input signals representative of utilization parameters of the installation and generates control signals that it transmits on the power supply network (S) of the installation, in at least one specific frequency channel, to receiving devices associated with functional members of the installation (3 4 5), characterized in that the management unit (8) receives the input signals through the power supply network (S) of the installation from transmitting devices (112, 12b to 12d) that have been connected to the network.  2. Process according to claim 1, characterized in that for developing the input signals and the control signals, a carrier wave is modulated in all or nothing mode or in FSK mode and in which trains are coded. pulses in the form of address bits indicative of the transmitting or receiving device of the corresponding signal and data bits indicative of a state of this device.  3. Method according to one of claims 1 or 2, characterized in that is transmitted at least one of the transmitting devices in a silence observed by the management unit (8) in a frequency channel after the management unit (8) has interrogated this transmitting device with a control signal in said frequency channel.  4. Method according to one of claims 1 to 3, characterized in that one (12d) at least of the transmitter devices connected to a detector addresses spontaneously in a frequency channel which is reserved for it, signals of priority entry to the management unit (8).  5. Method according to one of the preceding claims> characterized in that it controls the exchange of signals between the various functional units of the installation and the management unit (8) from a videotelephone terminal (15) connectable on the one hand to a PBX (16) and on the other hand to the electrical network (S) of 1 installation by an appropriate interface unit (27).  6. Method according to one of claims 1 to 4. characterized in that programming locally or remotely managing the electrical installation from a videotelephone terminal (15).  Method according to one of Claims 4 to 4, characterized in that the management unit (8) retransmits to a videotelephone terminal (15) upon request thereof> signals corresponding to information provided by the transmitter devices (1va, 12b).  8. Device for implementing the method according to one of the preceding claims. characterized in that it comprises a management unit (8) having a network output (9) connectable at any point of the electrical network (S) of the installation, this management unit being adapted to deliver on its network output of control signals to which receptor devices (11a, 11b, 112) connected in series with functional units (3, 4, 5) of the plant and upstream thereof are selectively sensitive to change the operating state of these members, and adapted to receive, memorize and interpret measurement and / or signaling signals emanating from emitting devices (112, 12b to 12d) connected in series with other functional units (S, 6, 7 8) of installation and upstream of these.  9. Device according to claim 8, characterized in that the management unit (8) is programmable.  10. Device according to one of claims 8 or 99 characterized in that the management unit (8) comprises a microprocessor (21) connected to the electrical network (S) of the installation on the one hand via a coding circuit (29) and a transmission interface circuit (30) adapted to deliver on the network output (9) of the management unit (8) pulse trains modulating a wave high frequency carrier and coded according to the receiver device receiving the corresponding signal, and secondly via at least one decoding circuit <31, 3La) and at least one receiving interface circuit ( 32, 3? A) adapted to transform the coded pulse trains from the transmitter devices into signals usable by the microprocessor (21).  11. Device according to one of claims 8 to 10 characterized in that a receiving device (11a) la) comprises at input a selective filter (34) tuned to the frequency of the carrier wave, this filter being connected to a frequency detector circuit (36) outputting at its output the control signal in the form of a series of pulses, this detector circuit being itself connected to a decoding circuit (7) connected to an address selector circuit ( 38) for outputting a signal to which a control circuit (Z9) of the receiver device (1a) is responsive for controlling the functional unit (S) to which said receiver device is connected.  12. Device according to one of claims 8 to 11, characterized in that certain receiving devices (112) are designed to also function as transmitters, these devices further comprising a resistor circuit (46, 47) which is connected to a part of a measuring detection circuit (49, 50, 51) and secondly of a sequencing circuit (52) itself connected to the decoding circuit (37) of the reception circuit, this sequencing circuit managing the signal exchanges between the management unit (8) and said transceiver device (112).  13. Device according to one of claims 8 to 12, characterized in that it comprises a filter (66) connected downstream of the circuit breaker (2) of the installation and upstream of the management unit (8). to mitigate disturbances that may be generated by a similar facility operating in the vicinity of this management unit.  14. Device according to one of claims 8 to 13, characterized in that 1 management unit is connected to a videotelephone terminal (15) connectable on a self-addressed telephone network (16), via a circuit adapter interface (27).  15. Device according to one of claims 8 to 13, characterized in that the management unit (8) is connectable to the peri-computing outlet of a videotelephone terminal (15) itself connectable to a telephone network autocommuted (16).  16. Device according to one of claims 8 to 15, characterized in that the network output (9) of the management unit (8) is provided with a plug socket (10) compatible with domestic installation socket bases, and at least some of the transmitters and receivers comprise a plug (13) plug-in into a socket socket of the installation and a socket base (14) adapted to receive a plug of the associated functional member.