Method for determining at least one electronic signature associated with at least one piece of electrical equipment.

Abstract

Method for determining at least one electronic signature associated with at least one electrical equipment. The invention relates to a method for determining at least one electronic signature (ES) associated with at least one electrical equipment (EE). More specifically, the at least one electronic signature is determined based on a response from the at least one electrical equipment to at least one electrical input signal (EIS) of predetermined characteristics emitted by a power supply source (PSS) on a power supply line (PSL) of the at least one electrical equipment. Abstract figure: Figure 1

Description

Title of the invention: Method for determining at least one electronic signature associated with at least one electrical equipment. technical field

[0001] The invention lies in the field of identification of electrical equipment, that is to say devices powered by an electrical source. Previous art

[0002] In many territories, initiatives exist or are planned, particularly within a regulatory framework, to enable consumers to access information concerning electrical equipment that they may own or are considering acquiring.

[0003] In this respect, one can cite, for example, the European Product Registry for Energy Labelling (EPREL) or the Digital Product Passport (DPP). The European Product Registry for Energy Labelling takes the form of an online database that lists all products in different target product categories subject to the requirement to bear an energy label in order to be authorized for distribution within the European Union. Placing a product belonging to these categories (which essentially include categories of electrical equipment, such as light bulbs and lamps, heating appliances, refrigerators and freezers, etc.) on the European Union market requires an energy label.) is thus conditional upon the prior registration, among other conditions, of a relatively large amount of detailed information relating to the product in question in a public database, as well as technical documentation, conformity assessment information, etc. The information sheet associated with a product includes, for example, information relating to the dimensions of the product, its electrical consumption possibly depending on its various operating modes, its noise level, etc.

[0004] The Digital Product Passport is also part of a European regulatory framework, and consists of the mandatory establishment in the future of a digital product sheet intended to make even more detailed information accessible for a large number of product categories, and in particular for electrical equipment, relating for example to the origin, composition, repair and dismantling options of a product as well as how its various components can be recycled.

[0005] Solutions therefore exist which offer the possibility for a user or any other interested party to freely access relatively detailed information on electrical equipment, provided that this user has certain key data enabling him to reach the desired product sheet in the database consulted, typically for example the type, brand and / or model of the equipment in question.

[0006] These solutions, however, suffer from certain limitations, or are at the very least improvable. More specifically, with regard to electrical equipment, there is currently no information available or planned in these or other broader databases that would allow for a unique or even specific characterization of a given piece of equipment that could be automatically used directly at the level of an electrical network. In other words, the data available for electrical equipment does not include key data that would allow for the unique characterization of a type of electrical equipment based, for example, on the device's behavior under predefined operating conditions.

[0007] The present invention aims to resolve all or part of the aforementioned drawbacks. Summary of the invention

[0008] The present technique provides a solution to overcome certain drawbacks of the prior art. In one aspect, the present technique relates to a method for determining at least one electronic signature associated with at least one piece of electrical equipment. More specifically, said at least one electronic signature is determined based on a response of said at least one piece of electrical equipment to at least one electrical input signal of predetermined characteristics emitted by a power source on a power supply line to said at least one piece of electrical equipment.

[0009] In this way, the method according to the present technique makes it possible to associate one or more specific electronic signatures with an electrical device or an assembly of multiple electrical devices under predefined, particular power supply conditions, thus uniquely characterizing the electrical device or assembly of electrical devices to which it is associated. Such a method is particularly advantageous because it offers, for example, a solution for characterizing electrical equipment that can be used directly and automatically at the level of an electrical network. The method thus makes it possible to characterize a product based on an electrical signal and consequently to record it, or even to verify its presence and / or proper functioning. operation on the electrical network over which the signal is transmitted. This signal can be transmitted locally or remotely.

[0010] In a particular embodiment, said response is a discharge response of resistive and / or inductive and / or capacitive components of said at least one electrical equipment, observed over a predetermined time.

[0011] In this way, an electronic signature according to the present technique is established on the basis of a measurable response signal on a power supply line of the electrical equipment for which said signature is determined.

[0012] In a particular embodiment, said at least one electronic signature is determined for a target electrical equipment constituting the only equipment powered via said power supply line, and said electronic signature determined for said target electrical equipment is stored and associated with at least one identifier of said target electrical equipment in a data structure.

[0013] In this way, one or more electronic signatures are generated in connection with a given electrical equipment (or type of electrical equipment), then stored and associated with that electrical equipment within, for example, a product database. The information associated with an electrical equipment in this database is thus supplemented with at least one reference electronic signature associated with the product, such a reference electronic signature being able to be retrieved later, simply by requesting it from this database, for various uses.

[0014] In a particular embodiment, said at least one electronic signature includes at least one so-called low-power electronic signature, determined in response to an electrical signal of predetermined characteristics emitted by a low-power power supply source on said power supply line.

[0015] In this way, electronic signatures associated with low-power power supply conditions are available, usable, for example, in contexts where electrical equipment is powered by a low-power power source, such as solar panels or a wind turbine. Thus, even after a switchover from a high-power electrical grid (typically a grid managed by an incumbent energy supplier) to a low-power backup electrical grid, following, for example, a power outage on the high-power grid, low-power electronic signatures remain available to characterize electrical equipment for various use cases.

[0016] According to a particular feature of this embodiment, said predetermined characteristics of the input electrical signal for determining the low-power electronic signature include characteristics in voltage, current and frequency of numerical values ​​close to those defined in low power electrical safety standards, complying with said standards.

[0017] In this way, the safety of persons remains assured.

[0018] In a particular embodiment, said at least one electronic signature comprises at least one so-called high-power electronic signature, determined in response to an electrical signal of predetermined characteristics emitted by a high-power power supply source on said power supply line.

[0019] In this way, we have electronic signatures associated with high power supply conditions, usable for example in contexts where electrical equipment is supplied in a generally conventional way by a high power electrical network, typically a network managed by a historical energy supplier, with whom the manager of a site has for example subscribed to an electricity supply contract.

[0020] According to a particular feature of this embodiment, said predetermined characteristics of the input electrical signal for determining the high-power electronic signature include a voltage of the order of 200V and an intensity of the order of 6A.

[0021] In this way, the characteristics selected for the input electrical signal are of values ​​close to those required for normal operation of the powered electrical equipment.

[0022] It also follows from the particular embodiments described above that the same electrical equipment can be associated with several distinct electronic signatures, in particular a low power electronic signature and a high power electronic signature, which makes it possible to exploit the present technique in different contexts of power supply of electrical equipment.

[0023] In a particular embodiment, said predetermined characteristics of the input electrical signal include:

[0024] - a voltage between 90V and 300V;

[0025] - an intensity between 1mA and 2A;

[0026] - a frequency between 0Hz and 100Hz.

[0027] In this way, we have in particular an electronic signature associated with an input electrical signal whose characteristics are close to the classic characteristics of electrical networks conventionally implemented.

[0028] In a particular embodiment, said predetermined characteristics of the input signal are configured so that the duration of transmission of the electrical input signal and obtaining a response from said at least one electrical equipment to said electrical input signal is less than the response time of an electrical safety device associated with said power supply line.

[0029] Complementarily or alternatively, in another particular embodiment, said predetermined characteristics of the input signal are configured so that the maximum current of the electrical input signal is less than the breaking current of an electrical safety device associated with said power supply line.

[0030] In this way, the security and protection of persons remains ensured when determining an electronic signature according to the present technique.

[0031] In a particular embodiment, said response of said at least one electrical equipment to said at least one input electrical signal is obtained by means of at least one measuring device associated with said power supply line.

[0032] In this way, according to a first alternative, an electronic signature can be determined on the basis of measurements carried out under real conditions.

[0033] In another particular embodiment, said response of said at least one electrical equipment to said at least one electrical input signal is obtained by simulation, said simulation comprising loading data representative of a numerical model of said at least one electrical equipment into simulation software configured to simulate the response of at least one electrical equipment to a given electrical input signal.

[0034] In this way, according to a second alternative, an electronic signature can be determined on the basis of at least one software simulation, from a digital model of the electrical equipment or set of electrical equipment considered.

[0035] In a particular embodiment, the process according to the present technique comprises:

[0036] - the determination of an electronic signature associated with at least one piece of equipment specific electrical equipment, also known as tested electrical equipment;

[0037] - obtaining a so-called reference electronic signature, associated with the type of tested electrical equipment;

[0038] - the comparison of the electronic signature determined for the equipment electrical equipment tested and the reference signature associated with the type of electrical equipment tested, providing distance information between said signatures; and

[0039] - when said distance information is representative of a greater distance at a predetermined threshold, the issuance of a notification of malfunction of said tested electrical equipment.

[0040] In this way, electronic signatures according to the present technique are used in particular to identify a potential malfunction of a tested electrical equipment.

[0041] In a particular embodiment, the process according to the present technique comprises obtaining a plurality of electronic signatures associated with a plurality of electrical equipment, and using the plurality of electronic signatures to train at least one model for identifying and / or classifying electrical equipment.

[0042] In this way, electronic signatures according to the present technique are used in particular to build and train a model to automatically identify and / or classify electrical equipment supplied via the same power line, based on their electronic signature.

[0043] In another aspect, the present technique relates to an electronic device for determining at least one electronic signature associated with at least one piece of electrical equipment. Such a device comprises:

[0044] - means for triggering the emission of at least one electrical signal input of predetermined characteristics by a power supply source on a power supply line to said at least electrical equipment;

[0045] - means of determining said electronic signature, based on a response of said at least one electrical equipment to said at least one electrical input signal.

[0046] Such an electronic device may, of course, exhibit the various characteristics relating to the determination method according to the invention, which may be combined or considered separately. Thus, the characteristics and advantages of this device are the same as those of the method for determining at least one electronic signature associated with at least one piece of electrical equipment, and are not described in further detail.

[0047] According to another aspect, the proposed technique also relates to a computer program product downloadable from a communication network and / or stored on a computer-readable medium and / or executable by a microprocessor, comprising program code instructions for the execution of a method for determining at least one electronic signature as described above in any of its embodiments, when executed on a computer.

[0048] The proposed technique also relates to a computer-readable recording medium on which is recorded a computer program comprising program code instructions for executing the steps of the process as described above, in any of its embodiments.

[0049] Such a recording medium can be any entity or device capable of storing the program. For example, the medium can include a storage means, such as a ROM, for example a CD-ROM or a microelectronic circuit ROM, or a magnetic recording means, for example a USB flash drive or a hard drive.

[0050] On the other hand, such a recording medium can be a transmissible medium such as an electrical or optical signal, which can be transmitted via an electrical or optical cable, by radio, or by other means, so that the computer program it contains is executable remotely. The program according to the invention can, in particular, be uploaded to a network, for example, the Internet.

[0051] The different embodiments mentioned above can be combined with each other for the implementation of the invention. Figures

[0052] Other features and advantages of the invention will become more apparent upon reading the following description of a preferred embodiment, given by way of simple illustrative and non-limiting example, and the accompanying drawings, among which:

[0053] [Fig. 1] illustrates the general principle of a method for determining a signature electronics associated with electrical equipment, in a particular embodiment of the proposed technique;

[0054] [Fig.2] illustrates an example of determining an electronic signature associated with a set of electrical equipment, in a particular embodiment of the proposed technique;

[0055] [Fig.3] presents an example of the use of an electronic signature for the detection of a malfunction of a tested electrical equipment, in a particular embodiment of the proposed technique;

[0056] [Fig.4] describes a simplified architecture of an electronic device for the implementation of work of the proposed technique, in a particular mode of realization. Detailed description of the invention

[0057] The present application makes it possible to remedy some of the aforementioned drawbacks.

[0058] In all the figures in this document, the elements and steps of the same nature are designated by the same reference.

[0059] According to a first aspect, the present technique relates to a method for determining at least one electronic signature associated with at least one electrical equipment. For the purposes of this disclosure, electronic signature means a signal (or a set of attributes representative of such a signal) that uniquely characterizes an electrical equipment (or a set of electrical equipment) to which it is associated. According to the general principle of the proposed technique, illustrated in relation to [Fig. 1], an electronic signature SIG of an electrical equipment EE is determined based on a response of that equipment to an electrical input signal SEE of predetermined characteristics emitted by a power supply source SRC on a power supply line LG of that electrical equipment. According to a particular characteristic, a Such a response corresponds, for example, to a signal observed on the power supply line for a predetermined duration, this signal corresponding to a discharge response of the electronic components (typically resistive and / or inductive and / or capacitive components) of the electrical equipment (or a set of electrical equipment) after being subjected to the SEE input electrical signal.

[0060] In a particular embodiment, the method is implemented for determining one or more electronic signatures associated with a particular piece of electrical equipment. In this case, which corresponds to the situation illustrated in [Fig. 1], the electrical equipment in question, or target electrical equipment, is the only equipment powered by the power supply via the power line. In other words, there are no other electrical devices besides the target electrical equipment connected to this line when the electronic signature is determined.The proposed technique then makes it possible to generate, in particular when it has been previously determined (for example by several functional tests) that the electrical equipment works as expected, a reference electronic signature which makes it possible for example to characterize a particular type of electrical equipment (for example a dishwasher, a washing machine, a television, etc.) of a given brand (for example brand A, brand B, etc.) and of a given model (for example model Al of brand A, model A2 of brand A, model B1 of brand B, etc.).The electronic signatures thus generated are then, in a particular embodiment, stored in a data structure, where they are associated with their respective electrical equipment (i.e., more specifically, with an identifier of such equipment, for example, a "category-brand-model" triplet, or any other data capable of unambiguously identifying the device). For example, within the framework of this technique, it is proposed to enrich product databases (e.g., EPREL, DPP, etc.) by associating each listed electrical equipment (i.e., each equipment record or instance in the database), in addition to standard detailed information (e.g., identifier, product category, brand, model, serial number, dimensions, energy consumption, etc.), with one or more associated electronic signatures.

[0061] As illustrated in relation to [Fig. 2], the method according to the present technique also allows, in a particular embodiment, the determination of an electronic signature associated with a plurality (i.e., at least two) of electrical equipment powered via the same power supply line. [Fig. 2] thus shows an electronic signature SIG-C associated with a set of three electrical equipment EE1, EE2, and EE3, all powered via the same power supply line LG by the same power source SRC. Such an electronic signature SIG- It can be described as "composite", in the sense that it results to some extent from a combination of the individual electronic signatures associated with each of the electrical equipment connected to the LG line.

[0062] As described above, an electronic signature is determined based on the response of electrical equipment to an input electrical signal with predetermined characteristics. According to one aspect, the present technique therefore makes it possible to associate several electronic signatures with the same electrical equipment (or the same set of electrical equipment), depending on the input electrical signal used to generate an electronic signature.

[0063] The characteristics of such an input electrical signal are, in particular, in a particular embodiment, selected from classic or notable characteristics of typical domestic alternating current electrical networks, with, for example, a voltage between 90V and 300V, a current between 1mA and 2A, a frequency below 100Hz, for example 50Hz or 60Hz, etc. Complementarily or alternatively, predetermined characteristics associated with direct current (i.e., zero-frequency) power supply sources can also be selected to define certain input electrical signals that can also be used within the scope of this technique, with, for example, a voltage selected from 3V, 5V, 12V, 24V, or 48V.

[0064] For the purpose of protecting persons against electrical hazards (electrocution), the characteristics of the input signal are also, according to one aspect, configured so that the duration of transmission of the electrical input signal and of obtaining the response of the electrical equipment to this electrical input signal is less than the response time of an electrical safety device, for example typically a residual current circuit breaker, associated with the electrical supply line on which these signals are carried.

[0065] In the context of determining an electronic signature, the response of an electrical equipment to the input electrical signal of predetermined characteristics is obtained for example by means of at least one measuring device (e.g. oscilloscope, wattmeter, frequency meter, field meter, spectrum analyzer, etc.) associated with the power supply line of said equipment.

[0066] Alternatively, the response of at least one electrical device to an electrical signal with predetermined characteristics can also be obtained by simulation, for example using electrical circuit editing and simulation software. Implementing such a simulation includes, for example, loading representative data from a digital model (e.g., digital twin, equivalent electrical circuit diagram, etc.) into such software. of the electrical equipment in question (or equipment in question). This data is, for example, made available to the user as a file (e.g., a container file) associated with the electrical equipment in question, with a download link for this file accessible on the product page of the equipment in question within a product database (e.g., EPREL or DPP). This data is, for example, part of the numerous technical information items made available within the framework of CSR (Corporate Social Responsibility) initiatives or requirements, particularly to promote the repairability and recycling of electrical equipment.The simulation software allows, in particular, the free and easy setting of the characteristics of a simulated input electrical signal, and it is specifically configured to simulate the response of electrical equipment whose digital model has been previously loaded into the software to an input electrical signal having the required predetermined characteristics (i.e., those to which an electronic signature is to be associated). By modifying the reference values ​​associated with the digital model within this software, for example, those of an equivalent electrical circuit of the electrical equipment, the simulation also allows modeling, in addition to a response associated with nominal operation (i.e.(The correct, expected operation) of the electrical equipment, specific responses associated, for example, with malfunctioning equipment, or unexpected sporadic behaviors due, for example, to the age of the equipment, and thus the ability to manage the evolution of the equipment, particularly in terms of obsolescence or energy consumption. Therefore, it could be considered to program equipment replacement based on changes in the equipment's response to input data.

[0067] It follows from the above that it is possible to define several types of electronic signatures for the same electrical equipment. Depending on a particular characteristic, the same electrical equipment is thus associated with electronic signatures including, for example, at least one so-called low-power electronic signature and / or at least one so-called high-power electronic signature. More specifically, a low-power electronic signature is determined in response to an input electrical signal emitted by a low-power power supply on the electrical equipment's power supply line.A low-power input electrical signal corresponds, for example, to a signal with a power level below the activation threshold of an electrical safety device, typically a residual current circuit breaker (RCCB), which can be powered by residual output from solar panels (via an inverter in a residential setting) during adverse weather conditions such as winter. In such a context, the characteristics of the input electrical signal include, for example... A voltage of approximately 220V and a current of approximately 30mA (i.e., values ​​close to safety standards) are used. Similarly, a high-power electronic signature is determined in response to an input electrical signal emitted by a high-power power source on the electrical equipment's power supply line. A high-power input electrical signal might be one delivered by a public electricity utility's network, with characteristics including, for example, a voltage of approximately 200V and a current of approximately 6A (i.e., values ​​close to those required for the normal operation of the powered electrical equipment).

[0068] Having multiple electronic signatures for the same electrical equipment—each electronic signature associated with different but predetermined power supply characteristics of the electrical equipment—is useful, for example, for addressing various issues related to the use of such electronic signatures for the automatic identification of electrical equipment. In particular, this makes such identification possible under various power supply conditions (for example, with both high-power and low-power power supplies).

[0069] In a particular embodiment, according to an example of a use case illustrated in relation to [Fig.3], the electronic signature according to this disclosure can be used to assist in the diagnosis of a possible malfunction of at least one particular electrical equipment, referred to as the electrical equipment being tested.

[0070] To this end, in step 31, an electronic signature SIG_ET associated with the tested electrical equipment is determined by acquiring the response of the tested electrical equipment to an input electrical signal of predetermined characteristics emitted by a power supply on a power line supplying only the tested electrical equipment. Such acquisition of the response can be implemented, for example, by means of one or more measuring devices connected to the power line of the tested electrical equipment.

[0071] Furthermore, in step 32, a reference electronic signature, known as SIG_RF, is obtained, associated with the type of electrical equipment being tested. Such a reference electronic signature corresponds to an electronic signature previously determined in a general way for the type of appliance in question, in connection with normal or nominal operation (i.e., correct, expected, without apparent malfunction) of the appliance (for example, purely illustratively, this is a signature associated globally with all dishwashers of type A and model Al, if the electrical equipment being tested is specifically an example of a dishwasher of brand A and model Al). Such a reference electronic signature was also determined under the same power supply conditions as those implemented in step 31. In other words, the characteristics of the input electrical signal used to determine the SIG_ET electronic signature associated with the electrical equipment tested in step 31 are chosen to match those of the input electrical signal used to generate the SIG_RF reference electronic signature associated with the type of appliance in question. The reference electronic signature is obtained, for example, from a product database (e.g., an EPREL-type database, or equivalent) containing a product sheet corresponding to the type, brand, and model of the appliance being tested.

[0072] In step 33, the SIG_ET electronic signature of the tested electrical equipment determined in step 31 is compared to the reference SIG_RF electronic signature obtained in step 32, in order to assess the degree of similarity between these signatures. To this end, a similarity analysis of the SIG_ET and SIG_RF electronic signatures is implemented, for example using cross-correlation techniques, this analysis providing information on the distance between the SIG_ET and SIG_RF electronic signatures.

[0073] When the distance information provided is representative of a distance greater than a predetermined threshold Th, in other words when the two electronic signatures are not considered to be sufficiently close, a notification of malfunction (or at the very least of abnormal or unexpected behavior) of the tested electrical equipment is provided in a step 34. Similarly and optionally, a notification of no malfunction is possibly provided when the distance information obtained in step 33 is representative of a distance less than said predetermined threshold (according to a particular characteristic not illustrated in [Fig.3]).

[0074] Such diagnostic assistance can prove valuable, for example at the level of an after-sales service, the receipt of such a notification can in particular serve as a decision element on the basis of which a technician can for example choose whether or not to undertake a more thorough examination of the device.

[0075] According to another use case example, the electronic signatures determined using this technique are used to train at least one model for identifying and / or classifying electrical equipment. More specifically, based on a large amount of data collected and stored in memory, associating identifiers of electrical equipment types with corresponding electronic signatures for a very large number of devices, deep learning techniques based, for example, on networks of Multilayer neurons are implemented. Machine learning algorithms are thus trained to build one or more models capable of identifying and / or classifying electrical equipment, based on an electronic signature provided as input to the model. The training data for a model, fed during the learning phase, may include associations between an electronic signature and a single piece of electrical equipment (the signature then corresponding, for example, to what can be considered a reference signature for the equipment in question), or between an electronic signature and a combination of electrical equipment (i.e., a plurality of equipment) when such a signature has previously been determined in relation to a set of several known electrical devices powered via the same power line.These associations injected during the learning phase can include the injection of electronic signatures associated with electrical equipment exhibiting normal or nominal operation (i.e., "reference" electronic signatures associated with correct, expected operation without apparent equipment malfunction), but also the injection of electronic signatures associated with electrical equipment exhibiting previously observed malfunctions or aging (for example, discovered during the lifecycle of the same series of equipment), or even simulated using digital models of the equipment in question (for example, using modified equivalent circuits to simulate malfunctions due to aging or differences in the quality of the constituent components, e.g.the effects of a drop in the Zener voltage associated with a Zener diode, a decrease in the capacitance of the circuit's capacitors, an increase in the leakage currents of these capacitors, wear on the printed circuit board traces, a progressive loss of shielding effectiveness on certain parts of the circuit, dust, humidity, etc.). It is thus possible to teach the model to more easily identify or classify equipment with certain known defects, or even to program obsolescence or inoperativeness of the equipment based on different signatures. For example, the SIG_ET signature of a tested defective piece of equipment obtained within the framework of the malfunction detection assistance procedure already described in relation to [Fig.3] can, according to a particular characteristic, once the malfunction has been identified, serve as training data for the model, in order to teach it to detect and identify the malfunction in question later, when the model is used for inference. According to a particular characteristic, the model according to this technique may in particular include or be associated with a large language model (or LLM) configured to act as a large knowledge model of electrical circuits of electrical equipment and. equivalents. A model according to the present technique can also be trained and / or configured to deliver identification and / or classification information for electrical equipment with different levels of precision, for example by appliance family (e.g. "identified: dishwasher", "identified: toaster + dishwasher + kettle group"), by brand (e.g. "identified: refrigerator of brand A", "identified: refrigerator group of brand A + dishwasher of brand B"), by specific model (e.g. "identified: washing machine of brand C, model Cl", etc.

[0076] In another aspect, the proposed technique also relates to an electronic device for determining at least one electronic signature associated with at least one piece of electrical equipment. Such an electronic device is capable of carrying out the process described above in any one of its embodiments. More particularly, such a device according to the present technique comprises, in a particular embodiment:

[0077] - means for triggering the emission of at least one electrical signal input of predetermined characteristics by a power supply source on a power supply line to said at least electrical equipment;

[0078] - means of determining said electronic signature, based on a response of said at least one electrical equipment to said at least one electrical input signal.

[0079] Figure 4 schematically and in a simplified manner represents the structure of such an electronic device in a particular embodiment. The device according to the proposed technique comprises, for example, a memory 41 consisting of a buffer memory M, a processing unit 42, equipped, for example, with a qP processor, and controlled by the computer program Pg 43, implementing steps of the process for determining at least one electronic signature associated with at least one electrical device according to at least one embodiment of the invention. At initialization, the code instructions of the computer program 43 are loaded into the buffer memory before being executed by the processor of the processing unit 42.The processing unit 42 receives as input E, for example, data representing an instruction to trigger the transmission, via a power supply, of at least one input electrical signal with predetermined characteristics on a power supply line to one or more electrical devices. The processor of the processing unit 42 then performs the steps described above of the determination process, according to the instructions of the computer program 43, to deliver as output S at least one electronic signature associated with said at least one electrical device. To this end, the electronic device also includes, in at least one particular embodiment, [the following]. A communication interface enabling it to exchange messages with other devices. The electronic device includes, for example, at least one Ethernet, Wi-Fi, 3G, 4G, or 5G network interface, and / or at least one human-machine interface, and / or at least one wired interface, allowing it, for example, to receive and transmit data to and from other equipment to which it is connected (possibly via an internet-type communication network) and / or human operators. Such communication interfaces allow, for example, obtaining instructions to trigger the input electrical signal from a power supply, obtaining a response from electrical equipment to this input electrical signal from at least one measuring device, communicating a request to a remote database to register an electronic signature issued based on said response, etc.According to a particular embodiment, the power supply used to transmit the input electrical signal on a power supply line and / or the devices for measuring a response of at least one electrical equipment to this signal are implemented as modules directly integrated within the electronic device for determining at least one electronic signature according to the present technique.

Claims

Demands

1. A method for determining at least one electronic signature (GIS) associated with at least one electrical equipment (EE), said method being characterized in that said at least one electronic signature is determined based on a response of said at least one electrical equipment to at least one electrical input signal (SEE) of predetermined characteristics emitted by a power supply source (SRC) on a power supply line (LG) of said at least one electrical equipment.

2. A method according to claim 1, characterized in that said response is a discharge response of resistive and / or inductive and / or capacitive components of said electrical equipment, observed over a predetermined time.

3. A method according to claim 1, characterized in that said at least one electronic signature is determined for a target electrical equipment constituting the only equipment powered via said power supply line, and in that said electronic signature determined for said target electrical equipment is stored and associated with at least one identifier of said target electrical equipment in a data structure.

4. Method according to claim 1, characterized in that said at least one electronic signature comprises at least one electronic signature said low power, determined in response to an electrical signal of predetermined characteristics emitted by at least one solar panel or wind turbine, said low power power source, on said power line.

5. Method according to claim 4, characterized in that said predetermined characteristics of the input electrical signal for determining the low power electronic signature include characteristics of numerical values ​​close to those defined in low power electrical safety standards, complying with said standards.

6. A method according to claim 1, characterized in that said at least one electronic signature comprises at least one so-called high-power electronic signature, determined in response to an electrical signal of predetermined characteristics emitted via a network of an electricity supply operator, referred to as a high power power supply source, on said power supply line.

7. Method according to claim 6, characterized in that said predetermined characteristics of the electrical input signal for determining the high power electronic signature include a voltage of 200V and a current of 6A.

8. A method according to claim 1, characterized in that said predetermined characteristics of the input electrical signal include: - a voltage between 90V and 300V; - a current between 1mA and 2A; - a frequency between 0Hz and 100Hz.

9. A method according to claim 1, characterized in that said predetermined characteristics of the input signal are configured so that the duration of transmission of the electrical input signal and obtaining a response from said at least one electrical equipment to said electrical input signal is less than the response time of an electrical safety device associated with said power supply line.

10. A method according to claim 1, characterized in that said predetermined characteristics of the input signal are configured so that the maximum current of the electrical input signal is less than the breaking current of an electrical safety device associated with said power supply line.

11. Method according to claim 1, characterized in that said response of said at least one electrical equipment to said at least one input electrical signal is obtained by means of at least one measuring device associated with said power supply line.

12. A method according to claim 1, characterized in that said response of said at least one electrical equipment to said at least one electrical input signal is obtained by simulation, said simulation comprising loading data representative of a numerical model of said at least one electrical equipment into simulation software configured to simulate the response of at least one electrical equipment to a given electrical input signal.

13. The method according to claim 1, characterized in that it comprises: - the determination (31) of an electronic signature (SIG_ET) associated with at least one particular electrical equipment called the tested electrical equipment; - the obtaining (32) of a reference electronic signature (SIG_RF), associated with the type of tested electrical equipment; - the comparison (33) of the electronic signature determined for the tested electrical equipment and the reference signature associated with the type of tested electrical equipment, providing distance information between said signatures; and - when said distance information is representative of a distance greater than a predetermined threshold (Th), the issuing (34) of a malfunction notification of said tested electrical equipment.

14. A method according to claim 1, characterized in that it comprises obtaining a plurality of electronic signatures associated with a plurality of electrical equipment, and using the plurality of electronic signatures to train at least one model for identifying and / or classifying electrical equipment.

15. Electronic device for determining at least one electronic signature associated with at least one electrical equipment, said device being characterized in that it comprises: - means for triggering the emission of at least one electrical input signal of predetermined characteristics by an electrical power source on an electrical power supply line to said at least one electrical equipment; - means for determining said electronic signature, based on a response from said at least one electrical equipment to said at least one electrical input signal.

16. Product computer program downloadable from a communication network and / or stored on a computer-readable medium and / or executable by a microprocessor, characterized in that it includes program code instructions for the execution of a process according to any one of claims 1 to 14, when executed by a computer.

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