FR3120581A1 - ELECTRICITY DISTRIBUTION SYSTEM COMPRISING A USER IDENTIFICATION SYSTEM - Google Patents

Abstract

ELECTRICAL DISTRIBUTION SYSTEM COMPRISING A USER IDENTIFICATION SYSTEM The invention relates to an electrical distribution system (100) comprising an electrical distribution terminal (102) with an electrical outlet (104a-b), a connection cable ( 170) connected between the electrical outlet (104a-b) and the general power outlet (154) of a vehicle (150), a first electrical measurement module (108a-b) measuring a first quantity of electricity which passes through the electrical socket (104a-b), a second electrical measurement module (108c) which measures a second quantity of electricity which passes through an electrical socket of the connection cable (170) connected to the vehicle (50), an identification unit (120) to collect each first and second quantity of electricity, to compare each first quantity of electricity to each second quantity of electricity, and to associate the first and the second electrical measurement modules (108a-c) whose quanti electrical connections are equal. Fig. 1

Description

ELECTRICITY DISTRIBUTION SYSTEM COMPRISING A USER IDENTIFICATION SYSTEM

The present invention relates to an electrical distribution system comprising a system for identifying a user, in particular in the case of a vehicle electrically connected to an electrical distribution terminal. The invention also relates to a method for identifying such a distribution system.

PRIOR ART

To electrically supply a vehicle such as a boat or a camper, it is known to use an electrical distribution terminal supplied with electricity from an electrical network. The electrical distribution terminal has sockets and the user of the vehicle can connect to one of the sockets by connecting an extension cord between the socket of the electrical distribution terminal and a socket of his vehicle.

The devices in the vehicle are then supplied with electricity and can therefore operate even when the vehicle is stationary.

Generally, the use of these electrical distribution terminals requires the payment of an invoice linked to the quantity of electricity withdrawn and it is then necessary to identify the user in order to pass on his electricity consumption to him.

Additionally, it may happen that incidents occur between the socket of the electrical distribution terminal and the socket of the vehicle. For example, it may be another user who, by installing a power strip, takes part of the legal user's electricity, which will then be billed on the amount of consumption, or it may also be current leakage which then escapes to earth.

It is therefore necessary to find an electrical distribution system comprising an identification system that can identify a user in order to be able to pass on the cost of his consumption.

An object of the present invention is to provide an electrical distribution system comprising an identification system, in particular in the case of a vehicle electrically connected to an electrical distribution terminal.

To this end, an electrical distribution system is proposed intended to supply electricity to at least one vehicle, each comprising a general power outlet, said electrical distribution system comprising:

- an electrical distribution terminal with at least one electrical outlet powered electrically from an electrical network,

- for each vehicle, a connection cable, a first electrical outlet of which is electrically connected to an electrical outlet of the electrical distribution terminal and a second electrical outlet of which is intended to be electrically connected to the general power outlet of said vehicle,

- for each electrical outlet of the electrical distribution terminal, a first electrical measurement module which measures a first quantity of electricity which passes through said electrical outlet,

- for each second electrical outlet of the connection cable, a second electrical measurement module which measures a second quantity of electricity passing through said second electrical outlet, and

- an identification unit comprising collection means for collecting each first quantity of electricity and each second quantity of electricity, comparison means for comparing each first quantity of electricity with each second quantity of electricity thus collected, association means for associating the first electrical measurement module and the second electrical measurement module whose quantities of electricity are equal.

Such a distribution system thus makes it possible to recognize a user from his consumption profile in order to pass on to him the cost of his consumption.

Advantageously, each electrical measurement module and the identification unit each comprise a clock which are all synchronized, the quantities of electricity transmitted are timestamped from these clocks, and the identification unit further comprises means of detection to detect whether for each electrical measurement module, a change from a state of non-consumption to a state of consumption has taken place, time comparison means for comparing the timestamp of the change of state of each first module of electrical measurement referenced by the detection means, to the timestamp of the change of state of each second electrical measurement module referenced by the detection means, and temporary association means for at least temporarily associating the first electrical measurement module and the second electrical measurement module whose timestamps of the change of state are equal, and the comparing means are provided for first comparing the the quantities of electricity of the first electrical measurement module and of the second electrical measurement module thus temporarily associated.

Advantageously, each second electrical measurement module includes a geolocation sensor, and the collection means are also provided to collect the geolocation data of said geolocation sensor.

Advantageously, each first electrical measurement module comprises a geolocation sensor, and the collection means are also provided to collect the geolocation data of said geolocation sensor.

Advantageously, each electrical measurement module and/or each electricity measurement sensor comprises a unique identifier, programmable or not.

The invention also proposes a method for identifying an electrical distribution system, where the method comprises, implemented by the identification unit, a collection step during which the identification unit collects each first quantity of electricity and each second quantity of electricity, a comparison step during which the identification unit compares each first quantity of electricity with each second quantity of electricity thus collected, and an association step during which the identification unit associates the first electric measuring module and the second electric measuring module whose quantities of electricity are equal.

Advantageously, the monitoring method comprises, between the collection step and the comparison step, a state change detection step during which the identification unit checks for each electrical measurement module whether a change of 'a state of non-consumption to a state of consumption has taken place, then a step of temporal comparison during which the identification unit compares the timestamp of the change of state of each first electrical measurement module referenced during from the state change detection step, to the timestamp of the state change of each second electrical measurement module referenced during the state change detection step, and a step of temporarily associating with the during which the identification unit at least temporarily associates the first electrical measurement module and the second electrical measurement module whose timestamps of the change of state are equal, and the step of comparing is carried out ab ord between the first electrical measurement module and the second electrical measurement module thus temporarily associated.

Advantageously, when the identification unit further comprises alarm means for emitting an alarm when the first quantity of electricity and the second quantity of electricity of the electrical measurement modules thus associated diverge from each other over time, the method comprises, after the association step, a step of issuing an alarm during which the monitoring unit issues an alarm when the first quantity of electricity and the second quantity of electricity of the electrical measurement modules thus associated diverge from each other over time.

The characteristics of the invention mentioned above, as well as others, will appear more clearly on reading the following description of an exemplary embodiment, said description being made in relation to the attached drawings, among which:

is a schematic representation of an electrical distribution system according to the invention, and

represents an example of architecture of an electrical measurement module implemented in a distribution system according to the invention.

DETAILED DESCRIPTION OF EMBODIMENTS

The shows an electrical distribution system 100 which is intended to supply electricity to a vehicle 150.

The electrical distribution system 100 comprises an electrical distribution terminal 102 with at least one electrical outlet 104a-b connected to electrical cables 107. Each electrical outlet 104a-b is thus supplied through these electrical cables 107 with an electrical current from a electrical network 106.

The also shows the vehicle 150 such as a boat or motor home which contains electrical equipment 152a-b, a general power socket 154 and a network of electrical cables 156 which are electrically connected between the general power socket 154 and each electrical equipment 152a-b. Of course, between the general power outlet 154 and the network of electrical cables 156, the vehicle 150 may include a fuse box.

The electrical distribution system 100 also comprises, for each vehicle 150, a connection cable 170 which is electrically connected between an electrical outlet 104a-b of the electrical distribution terminal 102 and the general power outlet 154 in order to electrically supply the vehicle 150 from the electrical network 106. To this end, the connection cable 170 has an electrical outlet at each of its ends, and the first electrical outlet of the connection cable 170 is electrically connected to the electrical outlet 104a-b and the second electrical outlet of connection cable 170 is electrically connected to general power outlet 154.

For each electrical outlet 104a-b of the electrical distribution terminal 102, the electrical distribution system 100 comprises a first electrical measurement module 108a-b which measures a first quantity of electricity which passes through said electrical outlet 104a-b, c' i.e. the amount of electricity that supplies said electrical outlet 104a.

In the embodiment of the invention presented here, the first electrical measurement module 108a-b is upstream of the electrical outlet 104a-b of the electrical distribution terminal 102 with respect to the connection cable 170, but in an integration further, it could be integrated directly into said electrical outlet 104a.

In the same way, for each second electrical outlet of the connection cable 170, that is to say the one which connects to the general power outlet 154, the electrical distribution system 100 comprises a second electrical measurement module 108c which measures a second quantity of electricity which crosses said second electrical socket of the connection cable 170 and therefore the quantity of electricity supplied to the vehicle 150 at the level of its general power socket 154. The second electrical measurement module 108c can be integrated directly into the second electrical outlet of the connection cable 170 or be for example an additional assembly connecting, in the form of a pull-out socket, between the second electrical outlet of the connection cable 170 and the general power outlet 154.

The shows an example of an electrical measurement module 108a-c which includes an electricity measurement sensor 202 which measures the amount of electricity that passes through the electrical cables 203 supplying the electrical outlet to which the electricity measurement sensor 202 is associated. The electrical cables 203 can thus be the electrical cables 107 which supply the electrical socket 104a-b of the electrical distribution terminal 102 or the cables of the connection cable 170, and the electrical socket is then the electrical socket 104a-b of the terminal. electrical distribution 102 or the second electrical outlet of the connection cable 170.

The electrical distribution system 100 also includes an identification unit 120 equipped with appropriate software and which can take the form, for example, of a computer, a touch pad, or an intelligent telephone (“smartphone”). .

In general, the identification unit 120 comprises collection means for collecting each first quantity of electricity and each second quantity of electricity, comparison means for comparing each first quantity of electricity with each second quantity of electricity thus collected, and association means for associating the first electrical measurement module 108a-b and the second electrical measurement module 108c whose quantities of electricity are equal.

The identification unit 120 can thus receive the first and the second quantities of electricity from each electrical measurement module 108a-c, it compares each first quantity of electricity with each second quantity of electricity in order to determine each pair of electrical measurement modules 108a-c which thus corresponds to the same connection cable 170.

Thus, each first electrical measurement module 108a-b of the electrical distribution terminal 102 is associated with a second electrical measurement module 108c of a vehicle 150 and because of this association, the amount of consumption of said vehicle 150 can be calculated and transmitted to the user of said vehicle 150 for payment.

According to a particular embodiment, the identification unit 120 comprises transmission means for transmitting an alarm when the first quantity of electricity and the second quantity of electricity of the electrical measurement modules 108a-c thus associated diverge. each other over time.

Indeed, for the same connection cable 170, the first quantity of electricity is equal to the second quantity of electricity as long as there is no anomaly.

From there, the identification unit 120 associates the electrical measurement modules 108a-c of the pair and monitors a possible discrepancy between the first and the second quantities of electricity of the electrical measurement modules 108a-c thus paired in regularly comparing the first quantity of electricity and the second quantity of electricity of the electrical measurement modules 108a-c of the pair. A divergence signifies the appearance of an anomaly, ie either a current leak to earth, or a diversion of electricity by another user. This anomaly is represented by the arrow 50 of the .

Thus, as soon as an anomaly is detected, the responsible person can check the electrical distribution system 100 and thus avoid anomalies.

In the embodiment of the invention presented here, the identification unit 120 comprises, among other things, a control unit 122 and first communication means 124 connected to the control unit 122.

Each electrical measurement module 108a-c also includes a control unit 204 which is connected to the electricity measurement sensor 202 and which regularly records the quantity of electricity detected by said electricity measurement sensor 202.

The electrical measurement module 108a-c also comprises second communication means 206 connected to the control unit 204 and which communicates with the first communication means 124 to regularly transmit the quantity of electricity detected by said measurement sensor. electricity 202.

Here, the collection means consist of the first communication means 124, and the comparison means and the association means consist of the control unit 122.

Each control unit 122, 204 comprises for example, connected by a communication bus: a processor or CPU (“Central Processing Unit” in English); a random access memory (RAM); a read-only memory (ROM); a storage unit such as a hard disk or a storage medium reader, such as an SD (Secure Digital) card reader; at least one communication interface, allowing communication with the electricity measurement sensor 202 and the communication means 124 and 206.

The processor is capable of executing instructions loaded into RAM from ROM, external memory (not shown), storage media (such as an SD card), or a network of communication. When the equipment is powered on, the processor is able to read instructions from RAM and execute them. These instructions form a computer program causing the processor to implement some or all of the algorithms and steps described herein.

All or part of the algorithms and steps can be implemented in software form by executing a set of instructions by a programmable machine, for example a DSP (Digital Signal Processor) or a microcontroller, or be implemented in hardware form. by a dedicated machine or component, for example an FPGA (Field-Programmable Gate Array) or an ASIC (Application-Specific Integrated Circuit).

Thus, each control unit 122, 204 comprises electronic circuitry adapted and configured to implement the methods and steps described here.

The invention also relates to an identification method implemented in the electrical distribution system 100, where the identification method comprises, implemented by the identification unit 120, a collection step during which the identification unit 120 collects each first quantity of electricity and each second quantity of electricity, a comparing step in which the identification unit 120 compares each first quantity of electricity with each second quantity of electricity thus collected, and an association step during which the identification unit 120 associates the first electric measurement module 108a-b and the second electric measurement module 108c whose quantities of electricity are equal.

In the case of anomaly monitoring, the identification method comprises, after the association step, a step of sending an alarm during which the identification unit 120 sends an alarm when the first quantity of electricity and the second quantity of electricity of the electrical measurement modules 108a-c thus associated diverge from each other over time.

The step of issuing an alarm consists in continuing to collect the quantities of electricity from the associated electrical measurement modules 108a-c, in comparing them to detect any divergence, that is to say when the difference between them becomes greater than a previously defined threshold and which may for example be of the order of 1%.

For a simplification of the explanation of the identification process implemented within the identification unit 120, it is considered that the electrical distribution terminal 102 comprises a single electrical outlet 104a and that there is a single vehicle 150 to supply.

Via the second communication means 206, the control unit 204 of each electrical measurement module 108a, 108c transmits the quantity of electricity detected by the associated electricity measurement sensor 202 to the first communication means 124 which then transmit them to the control unit 122 of the identification unit 120.

The control unit 122 of the identification unit 120 verifies whether the second quantity of electricity which arrives at the general power socket 154 indeed corresponds to the first quantity of electricity which leaves the electrical socket 104a of the electrical distribution terminal 102.

In other words, the control unit 122 of the identification unit 120 verifies that, for the second quantity of electricity consumed at the level of the general power socket 154, the electrical measurement module 108a connected to the electrical outlet 104a of the electrical distribution terminal 102, delivers the same first quantity of electricity and the two electrical measurement modules 108a and 108c are then paired and the association is stored in the memory of the control unit 122 of the identification unit 120. From this association, the consumption recorded at the electrical outlet 104a of the electrical distribution terminal 102 can be billed to the user of the vehicle 150 corresponding to the general power outlet 154.

In the case of anomaly monitoring, the further recovery and comparison of the electricity quantities makes it possible to verify that no discrepancy appears and if a discrepancy appears, it means that there is a problem and that part of the electricity supplied at the electrical outlet 104a of the electrical distribution terminal 102 does not arrive at the general power outlet 154.

It is then easy to follow the quantities of electricity of the pair thus associated and to monitor any discrepancies.

The identification unit 120 comprises alarm means which emit an alarm and which are connected to the control unit 122. The alarm means are arranged to send an alarm to a person responsible for the electrical distribution system 100 The alarm can be of different types, such as sending a message to a telephone or a computer, an audible signal, a light signal, etc. The alarm means here consist of the control unit 122.

According to a particular embodiment, the verification of equality between the second quantity of electricity which arrives at the general power supply socket 154 and the first quantity of electricity which leaves from the electrical socket 104a of the electrical distribution terminal 102 , consists for example, at a time 't', in verifying that the two quantities are equal to plus or minus a ready difference in value of quantity of electricity. In other words, verification is a one-time and regularly repeated verification.

According to a particular embodiment, the verification of equality between the second quantity of electricity which arrives at the general power supply socket 154 and the first quantity of electricity which leaves from the electrical socket 104a of the electrical distribution terminal 102 , consists for example, over a time interval, in generating a current profile for each quantity and in verifying that the two profiles are superimposed by more or less a ready difference in value of quantity of electricity. In other words, the verification is carried out over a time interval between two profiles and repeated regularly.

The difference is due, for example, to measurement precision, which is relatively low and does not exceed, for example, 1%.

In the case where there are several electrical outlets 104a-b on the same electrical distribution terminal 102, or even several electrical distribution terminals 102, and several vehicles 150, the identification unit 120 seeks to associate each first quantity of electricity transmitted by each electrical measurement module 108a-b associated with an electrical outlet 104a-b to a second quantity of electricity transmitted by each second electrical measurement module 108c associated with a general power outlet 154 and to record this association.

For the monitoring of anomalies, when a pair of sockets 104a-b, 154 has been associated, and therefore the corresponding electrical measurement modules 108a-c, the identification unit 120 stores the association in memory and continues to collect the quantities of electricity transmitted by said pair to compare them over time.

In the event of a discrepancy between an associated pair, or when an electrical outlet 104a-b of the same electrical distribution terminal 102 cannot be associated with a general power outlet 154 because no correspondence can be found , the control unit 122 can also control the alarm means.

To facilitate the verification of equality during identification, each electrical measurement module 108a-c and the identification unit 120 each comprise a clock which are all synchronized. The quantities of electricity transmitted are thus timestamped from these clocks.

Thus, when an electrical outlet 104a-b of an electrical distribution terminal 102 begins to consume, it is easy to limit the comparison of the quantities of electricity to the general power outlets 154 which begin to be supplied at the same time and the association is then faster.

When an electrical outlet 104a-b or a general power outlet 154 begins to consume, this corresponds to the simultaneous passage of the corresponding electrical measurement modules 108a-c from a state of non-consumption where the quantity of electricity is zero to a state of consumption where the quantity of electricity becomes non-zero.

The identification method then comprises, between the collection step and the comparison step, a state change detection step during which the identification unit 120 detects for each electrical measurement module 108a-c whether a change from a non-consumption state to a consumption state has occurred, that is, the identification unit 120 detects whether the amount of electricity of said electric measurement module 108a-c has changed from a zero value to a non-zero value, then a time comparison step during which the identification unit 120 compares the timestamp of the change of state of each first electrical measurement module 108a-b referenced during the state change detection step, to the timestamp of the state change of each second electrical measurement module 108c referenced during the state change detection step, and an association step temporary during which the identification unit 120 associates with the less temporarily the first electrical measurement module 108a-b and the second electrical measurement module 108c whose timestamps of the change of state are equal.

The comparison step is then carried out first between the quantities of electricity of the first electrical measurement module 108a-b and of the second electrical measurement module 108c thus temporarily associated, which saves time for the association final.

The identification unit 120 thus further comprises detection means for detecting whether for each electrical measurement module 108a-c, a change from a state of non-consumption to a state of consumption has taken place, means of temporal comparison to compare the timestamp of the change of state of each first electrical measurement module 108a-b referenced by the detection means, with the timestamp of the change of state of each second electrical measurement module 108c referenced by the means detection, and temporary association means for at least temporarily associating the first electrical measurement module 108a-b and the second electrical measurement module 108c whose timestamps of the change of state are equal, and the comparison means are then provided to first compare the quantities of electricity of the first electrical measurement module 108a-b and of the second electrical measurement module 108c thus temporarily associated.

In addition to the quantities of electricity, each second electrical measurement module 108c can transmit to the identification unit 120 geolocation data corresponding to its position, that is to say the position of the vehicle 150. For To do this, each second electrical measurement module 108c comprises a geolocation sensor which communicates with the control unit 204 of said second electrical measurement module 108c. The geolocation data are then transmitted with the second quantities of electricity by the second means of communication 206.

Thus, it is easy to locate the vehicle 150 to be invoiced and in the event of the alarm being triggered, the informed person can easily go to the place corresponding to the geolocation data transmitted.

In the same way, each first electrical measurement module 108a-b can include a geolocation sensor, and the means for collecting said first electrical measurement module 108a-b are also provided for collecting the geolocation data of said geolocation sensor and the transmit with the first quantities of electricity by the second means of communication 206. It is thus easy to locate the electrical distribution terminal 102, in particular in the case of a mobile terminal.

The collection means of the identification unit 120 are thus also provided to collect the geolocation data of said geolocation sensor.

To facilitate the association of an electrical measurement module 108a-c with a single user, each electrical measurement module 108a-c and/or each electricity measurement sensor 202 comprises a unique identifier, programmable or not, which allows its identification. and this unique identifier makes it possible to associate the electrical measurement module 108a-c with a particular user, for example, to send him the associated invoice.

The power supply of the electrical measurement modules 108a-b to make them work can be done directly on the associated cable 107, 170, but it can be done through another electrical source, either another electrical network, a battery, a battery , etc.

The means of communication 124, 206 can be based on different technologies, wireless, of the 2G, 3G, 4G, 5G, LPWA (“Low-Power Wide-Area”) type, or wired, of the carrier current type. But any other communication technology is possible.

After identification, such a distribution system makes it possible to deliver the order to which the user has subscribed, whether it is the simple provision of access to the electrical network, the provision of access to the electrical network limited in power and/or in energy and/or time. The first electrical measurement module 108a-b and/or the electrical distribution terminal 102 can then be designed to meet these demands.

Claims (9)

Electrical distribution system (100) intended to supply electricity to at least one vehicle (150), each comprising a general power socket (154), said electrical distribution system (100) comprising:
- an electrical distribution terminal (102) with at least one electrical outlet (104a-b) powered electrically from an electrical network (106),
- for each vehicle (150), a connecting cable (170) of which a first electrical outlet is electrically connected to an electrical outlet (104a-b) of the electrical distribution terminal (102) and of which a second electrical outlet is intended to be electrically connected to the general power outlet (154) of said vehicle (150),
- for each electrical outlet (104a-b) of the electrical distribution terminal (102), a first electrical measurement module (108a-b) which measures a first quantity of electricity which passes through said electrical outlet (104a-b),
- for each second electrical outlet of the connection cable (170), a second electrical measurement module (108c) which measures a second quantity of electricity which passes through said second electrical outlet, and
- an identification unit (120) comprising collection means for collecting each first quantity of electricity and each second quantity of electricity, comparison means for comparing each first quantity of electricity with each second quantity of electricity as well collected, and associating means for associating the first electrical measurement module (108a-b) and the second electrical measurement module (108c) whose quantities of electricity are equal. Electrical distribution system (100) according to Claim 1, characterized in that each electrical measurement module (108a-c) and the identification unit (120) each comprise a clock which are all synchronized, in that the quantities of electricity transmitted are timestamped from these clocks, and in that the identification unit (120) further comprises detection means for detecting whether, for each electrical measurement module (108a-c), a change in 'a state of non-consumption to a state of consumption has taken place, time comparison means for comparing the timestamp of the change of state of each first electrical measurement module (108a-b) referenced by the detection means, to the timestamp of the change of state of each second electrical measurement module (108c) referenced by the detection means, and temporary association means for at least temporarily associating the first electrical measurement module (108a-b) and the second electrical measurement module (108c) whose time stamps of the change of state are equal, and in that the comparing means are provided for first comparing the quantities of electricity of the first electrical measurement module (108a-b) and of the second electrical measurement module (108c) thus temporarily associated. Electrical distribution system (100) according to one of Claims 1 or 2, characterized in that each second electrical measurement module (108c) includes a geolocation sensor, and in that the collecting means are also provided for collecting the geolocation data of said geolocation sensor. Electrical distribution system (100) according to one of Claims 1 to 3, characterized in that each first electrical measurement module (108a-b) comprises a geolocation sensor, and in that the collection means are also provided for collecting geolocation data from said geolocation sensor. Electrical distribution system (100) according to one of Claims 1 to 4, characterized in that the identification unit (120) further comprises alarm means for emitting an alarm when the first quantity of electricity and the second quantity of electricity of the electrical measurement modules (108a-c) thus associated diverge from each other over time. Electrical distribution system (100) according to one of Claims 1 to 5, characterized in that each electrical measurement module (108a-c) comprises a unique identifier, programmable or not. A method of identifying an electrical distribution system (100) according to claim 1, wherein the method comprises, implemented by the identification unit (120), a collection step during which the unit of identification unit (120) collects each first quantity of electricity and each second quantity of electricity, a comparing step in which the identification unit (120) compares each first quantity of electricity with each second quantity of electricity thus collected, and an association step during which the identification unit (120) associates the first electrical measurement module (108a-b) and the second electrical measurement module (108c) whose quantities of electricity are equal. Identification method according to the preceding claim, characterized in that, when each electrical measurement module (108a-c) and the identification unit (120) each comprise a clock which are all synchronized, when the quantities of electricity transmitted are timestamped from these clocks, and when the identification unit (120) further comprises detection means for detecting whether, for each electrical measurement module (108a-c), a change in a state of non-consumption to a state of consumption has taken place, time comparison means for comparing the time stamp of the change of state of each first electrical measurement module (108a-b) referenced by the detection means, with the time stamp the change of state of each second electrical measurement module (108c) referenced by the detection means, and temporary association means for at least temporarily associating the first electrical measurement module (108a-b) and the second me electric measuring module (108c) whose timestamps of the change of state are equal, and when the comparing means are provided for first comparing the quantities of electricity of the first electric measuring module (108a-b) and of the second electrical measurement module (108c) thus temporarily associated, the method comprises, between the collection step and the comparison step, a step of detecting a change of state during which the identification unit (120) detects for each electrical measurement module (108a-c) whether a change from a non-consumption state to a consumption state has taken place, then a time comparison step during which the identification unit (120 ) compares the timestamp of the change of state of each first electrical measurement module (108a-b) referenced during the step of detecting a change of state, with the timestamp of the change of state of each second module of electrical measurement (108c) referenced in step d state change detection, and a temporary association step during which the identification unit (120) at least temporarily associates the first electrical measurement module (108a-b) and the second electrical measurement module ( 108c) whose timestamps of the change of state are equal, and in that the comparison step is carried out first between the first electrical measurement module (108a-b) and the second electrical measurement module (108c) thus temporarily associated. Identification method according to one of Claims 7 or 8, characterized in that, when the identification unit (120) further comprises alarm means for emitting an alarm when the first quantity of electricity and the second quantity of electricity of the electrical measurement modules (108a-c) thus associated diverge from each other over time, the method comprises, after the association step, a step of emitting an alarm in which the identification unit (120) issues an alarm when the first quantity of electricity and the second quantity of electricity of the electric measurement modules (108a-c) thus associated diverge from each other over time.