EP3532912A1

EP3532912A1 - Method for managing a mode of operation of an item of equipment

Info

Publication number: EP3532912A1
Application number: EP17794942.7A
Authority: EP
Inventors: Florent DUCHON; Jérôme BERGER
Original assignee: Sagemcom Broadband SAS
Current assignee: Sagemcom Broadband SAS
Priority date: 2016-10-28
Filing date: 2017-10-27
Publication date: 2019-09-04
Also published as: FR3058241A1; BR112019008390A2; FR3058241B1; US20200052915A1; CN109906419A; WO2018078077A1

Abstract

Certain items of equipment can operate according to a plurality of operating modes comprising a deep slumber mode in which an energy consumption of said item of equipment is a minimum, an active mode in which the energy consumption of the item of equipment is a maximum and a light slumber mode in which the energy consumption of the item of equipment is intermediate between the deep slumber mode and the active mode, switchover from the deep slumber mode to the active mode being slower than switchover from the light slumber mode to the active mode. The method allows an electrical meter supervising an electrical network to which an item of equipment is connected to control the switchover of said item of equipment to light slumber mode. For this purpose, the meter implements a human presence detection procedure based on an analysis of the electrical consumption in the electrical network and activates the light slumber mode of the item of equipment when a user is detected.

Description

METHOD FOR MANAGING AN OPERATING MODE OF A

EQUIPMENT

The invention relates to a method for managing an operating mode of a device that can operate in a plurality of operating modes comprising a deep sleep mode in which an electrical consumption of said equipment is minimum, an active mode in which the consumption electrical equipment is maximum and a light sleep mode in which the power consumption of the equipment is intermediate between the deep sleep mode and the active mode, and a device, equipment or system implementing the method.

Historically, electronic equipment was plugged in, used, and shut down between uses. With a growing need for equipment availability, there has been a problem of maintaining these equipment in almost permanent operation. Continuous operation at full speed obviously poses many problems: high power consumption, mechanical wear of moving parts, wear of electronic components, noise, etc. An intermediate solution is to move the equipment into a reduced activity regime or shut down some components of the equipment, while keeping essential components active. Thus, once the equipment in standby, it remains on standby and is reactivated if necessary, and this much faster than if it had been turned off completely and turned on again.

Some equipment has a plurality of standby modes. Each sleep mode is associated with a power consumption level and a desired reaction time. This is the case of certain computer equipment such as computers, tablets, smartphones and decoders ("Set Top Box" in English terminology).

A decoder is typically a device that must have a minimum consumption when no user is likely to use it and which, despite everything, must be able to start as quickly as possible when the user wishes. Some decoders can thus operate in a so-called deep sleep mode in which the power consumption of the decoder is minimum, an active mode in which the power consumption of the decoder is maximum and a light sleep mode in which the power consumption of the decoder is intermediate between deep sleep mode and active mode. For example, in deep sleep mode the decoder can stop feeding each unnecessary device when the decoder wakes up (video decoder chip, hard disk, main processor, etc.) and keep only essential devices for waking up (infrared receiver for a remote control, network interface for an alarm clock remotely, microcontroller to interpret signals received from the remote control and / or network and manage scheduled alarms). In light sleep mode, the decoder has all its devices powered and its main software initialized as in normal operation, but it maintains video and audio outputs stopped. When a decoder goes into light sleep mode, part of the internal devices of this decoder are disabled and / or the power of these internal devices is cut off. In the standby mode, the device can also keep some devices that have a fast start or require user intervention stopped. In active mode, all decoder devices are powered.

It is known to use planning so that equipment is in a light standby during certain time periods and in deep sleep the rest of the time. The planning can be fixed or obtained automatically by learning according to habits of one or more users as in documents US 2011182597 and FR2984541. However, these methods are not able to adapt to the exceptional behavior of the user. For example, if the user is exceptionally absent from home during a planned period in which the equipment must operate in a light sleep mode, the equipment consumes more than it should. Conversely, if the user returns home earlier than usual, the equipment is in deep sleep mode and is slow to start.

It is desirable to overcome these disadvantages of the state of the art. It is particularly desirable to provide a method for optimizing a compromise between energy saving of electronic equipment and reactivity to start up of this equipment. It is also desirable that this method is able to adapt to the real needs of a user and no longer according to his habits, as finely determined as they are.

It is further desirable to provide a method that is simple to implement and low cost.

According to a first aspect of the present invention, the present invention relates to a system comprising an equipment and an electricity meter, the equipment being operable in a plurality of modes of operation comprising a deep sleep mode in which an electrical consumption of said equipment is minimum, an active mode in which the power consumption of the equipment is maximum and a light sleep mode in which the power consumption of the equipment is intermediate between the standby mode deep and active mode, some of the internal devices of the equipment being disabled and / or the power of these internal devices being cut off when the equipment goes into a light sleep mode, a transition from deep sleep mode to active mode being slower than a transition from the light standby mode to the active mode, the equipment being powered by an electrical network of a building supervised by the electricity meter, the equipment and the electricity meter being able to communicate via a communication network. The electric meter comprises: detection means for detecting a human presence in the building by an analysis of the electrical consumption in the electrical network; transmission means for sending a message to the equipment via the communication network requesting a switch to light standby mode of the equipment when a human presence is detected; and the equipment comprises: receiving means for receiving said message via the communication network, and processing means for passing the equipment in a light sleep mode.

Thus, the system makes it possible to adapt the electrical consumption of the equipment to a real need of the user. It allows in particular to adapt the power consumption.

According to a second aspect of the invention, the invention relates to a method for managing an operating mode of a device that can operate in a plurality of operating modes comprising a deep sleep mode in which an electrical consumption of said equipment is minimum, an active mode in which the power consumption of the equipment is maximum and a light sleep mode in which the power consumption of the equipment is intermediate between the deep sleep mode and the active mode, a part of the internal devices of the equipment being disabled and / or the power to these internal devices being cut off when the equipment goes into a light sleep mode, a transition from the deep sleep mode to the active mode being slower than a switch from the light sleep mode in the active mode, the equipment being supplied by an electrical network of a building supervised by an electric meter able to communicate to a with the equipment via a communication network. The process, implemented by the electrical meter, includes: implementing a procedure for detecting a human presence in the building based on an analysis of the electrical consumption in the electrical network; and, when a human presence is detected, send (31) a message to the equipment, via the communication network, requesting a switch to light standby mode of the equipment.

According to one embodiment, the building comprises a plurality of zones and the electric meter is able to measure an electrical consumption in each zone independently, said message being sent when a human presence is detected in at least one of the zones.

According to one embodiment, the human presence detection procedure based on an analysis of the electrical consumption comprises detecting at least one variation of an electrical power consumed in the electrical network.

According to one embodiment, the building comprises a plurality of devices, each device being associated with a type of electrical consumption, and in that the electric meter is capable of measuring a current consumption by type of electrical consumption, said message being sent when an electrical power consumption greater than a predefined threshold is detected for at least one type of power consumption.

According to one embodiment, the electrical power consumed is that of at least one lighting device powered by the electrical network.

According to one embodiment, the human presence detection procedure based on an analysis of the electrical consumption includes searching for at least one electrical consumption profile characteristic of a human presence in the building.

According to a third aspect of the invention, the invention relates to a method for managing an operating mode of a device that can operate in a plurality of operating modes comprising a deep sleep mode in which an electrical consumption of said equipment is minimum, an active mode in which the power consumption of the equipment is maximum and a light sleep mode in which the power consumption of the equipment is intermediate between the deep sleep mode and the active mode, a part of the internal devices of the equipment being disabled and / or the power to these internal devices being cut off when the equipment goes into a light sleep mode, a transition from the deep sleep mode to the active mode being slower than a switch from the light sleep mode in the active mode, the equipment being powered by an electrical network of a building supervised by an electric meter able to communicate with the equipment via a communication network. The method implemented by the equipment comprises: receiving a message via the communication network requesting a switch to light standby mode of the equipment, the message having been sent by the electric meter following detection of a human presence in the building by a human presence detection procedure based on an analysis of the electrical consumption in the electrical network, and, put the equipment in a light standby mode.

According to one embodiment, the equipment can be in a plurality of states according to at least one predetermined criterion, the plurality of states comprising a first state in which the operating mode is constrained to the light sleep mode and / or a second state in which the operating mode is forced to deep sleep mode and a third state in which the operating mode is not forced, the equipment not taking into account a message requesting a switch to standby mode light equipment only when in the third state.

According to one embodiment, a predetermined criterion is a set of time slots comprising a time slot during which the equipment is in the first state, a time slot during which the equipment is in the second state and a time slot during which the equipment is in the third state.

According to one embodiment, each time slot corresponding to the first and second states is determined by a procedure for automatically determining periods during which the equipment must be in deep sleep mode or in light sleep mode, said procedure being based on an analysis of moments of use of the equipment by at least one user, a time slot of a predetermined duration and corresponding to the third state being added before and after each time slot corresponding to the first state determined by said procedure.

According to one embodiment, a predetermined criterion is a brightness level in at least one zone of the building, the equipment being in the first state when the brightness level is higher than a predefined threshold and in the third state when the level of brightness is above brightness is below said predefined threshold. According to a fourth aspect of the invention, the invention relates to an electric meter comprising means for implementing the method according to the second aspect.

According to a fifth aspect of the invention, the invention relates to equipment comprising means for implementing the method according to the third aspect.

According to a sixth aspect of the invention, the invention relates to a computer program, comprising instructions for implementing, by a device, the method according to the second aspect or the third aspect, when said program is executed by a processor said device.

According to a seventh aspect of the invention, the invention relates to storage means storing a computer program comprising instructions for implementing, by a device, the method according to the second aspect or the method according to the third aspect, when said program is executed by a processor of said device.

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 given in relation to the attached drawings, among which:

FIG. 1 schematically illustrates a context in which the invention is implemented;

FIG. 2A illustrates schematically a processing module included in an electric meter;

FIG. 2B schematically illustrates a processing module included in a device;

FIG. 3 schematically illustrates a method according to the invention, implemented by the electric meter, sending messages to a device;

FIG. 4 schematically illustrates a method for detecting a human presence based on a variation analysis of a consumed electrical power;

FIG. 5 schematically illustrates a method for determining an operating mode of a device according to the invention; and,

FIG. 6 schematically illustrates a detail of the method for determining an operating mode of a device according to the invention.

The invention is described later in a context where the equipment is a decoder. This method is however suitable for any equipment that can operate in a plurality of standby modes and connected to an electric meter by a communication network. Furthermore, this method is suitable when the same building comprises a plurality of equipment that can operate in a plurality of standby modes.

Fig. 1 schematically illustrates a context in which the invention is implemented.

Fig. 1 represents a simplified top view of a building 1 comprising a plurality of zones 17, 18, 19 and 20. The building 1 comprises an electrical network 12 supervised by an intelligent electric meter 10 and on which a decoder 11 is connected. zone comprises a lighting system powered by the electrical network 12. Thus, the zone 17 (respectively the zone 18, 19, 20) comprises a lighting system 16 (respectively a lighting system 13, 14, 15). The electric meter 10 is able to communicate with the decoder 11 through a communication network, not shown. The communication network is for example a CPL network (in-line carrier currents), in this case the electrical network 12 becomes a communication network, a wired network of Ethernet type or a wireless network of Wi-Fi type (according to the standards of the IEEE 802.11 group) or ZigBee based on the IEEE 802.15.4 standard.

Fig. 2A schematically illustrates a processing module 100 included in the electric meter 10.

According to the example of hardware architecture shown in FIG. 2A, the processing module 100 then comprises, connected by a communication bus 1000: a processor or CPU ("Central Processing Unit" in English) 1001; Random Access Memory (RAM) 1002; a ROM (Read Only Memory) 1003; a storage unit such as a hard disk or a storage medium reader, such as a Secure Digital (SD) card reader 1004; at least one communication interface 1005 enabling the processing module 100 to communicate with other modules or devices. For example, the communication interface 1005 is an Ethernet module, a PLC module, a Wi-Fi module or a ZigBee module. The communication interface 1005 allows the processing module 100 to send messages to a communication interface 1105 included in the decoder 11.

The processor 1001 is capable of executing instructions loaded into the RAM 1002 from the ROM 1003, an external memory (not shown), an storage medium (such as an SD card), or communication network. When the power meter 10 is turned on, the processor 1001 is able to read instructions from RAM 1002 and execute them. These instructions form a computer program causing the processor 1001 to implement the steps of the methods described below in relation with FIGS. 3 and 4.

The steps of the methods described in relation with FIGS. 3 and 4 can be implemented in software form by executing a set of instructions by a programmable machine, for example a DSP ("Digital Signal Processor" in English) or a microcontroller, or be implemented in hardware form by a machine or a dedicated component, for example an FPGA ("Field Programmable Gate Array" in English) or an ASIC ("Application-Specific Integrated Circuit" in English).

Fig. 2B schematically illustrates an example of hardware architecture of the processing module 110 included in the decoder 11.

According to the example of hardware architecture shown in FIG. 2B, the processing module 110 then comprises, connected by a communication bus 1100: a processor or CPU 1101; a random access memory RAM 1102; ROM ROM 1103; a storage unit such as a hard disk or a storage medium reader, such as an SD card reader 1104; at least one communication interface, such as the communication interface 1105 mentioned above, allowing the processing module 110 to communicate with the communication interface 1005.

The processor 1101 is capable of executing instructions loaded into the RAM 1102 from the ROM 1103, an external memory (not shown), a storage medium (such as an SD card), or a communication network. When the decoder is turned on, the processor 1101 is able to read instructions from RAM 1102 and execute them. These instructions form a computer program causing the implementation by the processor 1101 of the steps of the methods described below in relation to FIGS. 5 and 6.

The steps of the methods described in relation with FIGS. 5 and 6 can be implemented in software form by executing a set of instructions by a programmable machine, for example a DSP ("Digital Signal Processor" in English) or a microcontroller, or be implemented in hardware form by a machine or a dedicated component, for example an FPGA ("Field-Programmable Gaste Array "in English) or ASIC (" Application-Specifïc Integrated Circuit ").

In one embodiment, the decoder 11 further comprises at least one clock device providing timing information to the processor 1101 and / or the RAM 1102 and / or the ROM 1103, etc. at least one network card, hardware accelerator type devices, and input / output devices (tuner, audio / video output, network interfaces, receiver for remote control signal, etc.). Upon entering the light sleep mode, each clock device is maximally slowed down to provide timing information of minimum frequency. Furthermore, in the light sleep mode, the hardware accelerators and the input / output devices are stopped except for the devices necessary to wake up. Some devices, such as a tuner or some network cards, require microcode loading. Firmware loading is a relatively lengthy operation. During a transition to light sleep mode, the loading microcode has generally been performed beforehand, and the devices concerned remain powered so as not to lose the loaded microcode. But, these devices are not necessarily initialized or configured which limits the power consumption.

Fig. 3 schematically illustrates a method according to the invention, implemented by the electric meter 10, sending messages to the decoder 11.

In a step 30, the processing module 100 implements a procedure for detecting a human presence in the building 1 based on an analysis of an electrical consumption in the electrical network 12.

When a human presence is detected in the building 1, in a step 31, the processing module 100 sends a message to the processing module 110 of the decoder 11, via the communication network, requesting a passage of the decoder 11 in light sleep mode.

In one embodiment, the procedure for detecting a human presence in the building 1 based on the analysis of the electrical consumption comprises detecting at least one variation of an electrical power consumed in the electrical network. To do this in one embodiment, the processing module 100 implements a method for detecting a human presence based on an electrical consumption analysis described in relation with FIG. 4. This method is particularly suitable for detecting an ignition of a lighting system. It is assumed here that lighting a lighting system is representative of a human presence in a building. A lighting system generally operates with a consumption between "10W" and "200W". When a consumption increase of this order of magnitude is observed in an electrical network, it can be deduced that a user is present in the building. In one embodiment, the electric meter 11 is able to distinguish the power consumption of a lighting system from other electrical consumption.

Fig. 4 schematically illustrates a method for detecting a human presence based on a variation analysis of a consumed electrical power.

In a step 301, the processing module obtains a measure of electrical consumption made by the electric meter 10. The consumption measurement obtained in step 301 is called current consumption measurement. In a step 302, the module calculates a difference between the current consumption measurement and a consumption measurement, referred to as the previous consumption measurement, made during a previous implementation of step 301. The previous and current consumption measurements are, for example, successive consumption measures. In a step 303, the processing module 100 determines whether the difference is between a threshold S and a threshold S ₂ . In one embodiment S = 10W and S ₂ = 200W.

When, during the step 303, the difference is between the threshold S and the threshold S ₂ , the processing module 100 proceeds to a step 304.

In step 304, the processing module 100 determines and stores a current time value T.

In a step 305, the processing module 100 goes on hold for a duration S and then in a step 306 the processing module 100 performs a consumption measurement. The duration S is chosen so as to have enough time difference between two consumption measurements. In one embodiment, the duration S is equal to "1 s".

In a step 307, the processing module 100 calculates a difference Δ ₂ between the last two consumption measurements.

In a step 308, the processing module 100 compares an absolute value of the difference Δ ₂ with a threshold S ₃ . The threshold S ₃ is representative of a consumption variation so small that it is considered negligible. In one embodiment S ₃ is equal to "0.1W". When the absolute value of the difference Δ ₂ is less than S ₃ , the processing module 100 considers that the consumption variation over the last duration S is negligible and goes to a step 309 during which the processing module determines a current time T ₂ .

In a step 310, the processing module 100 calculates a difference between the instants T ₂ and T and compares this difference with a threshold S. Threshold S is a duration that makes it possible to check whether a consumption variation measured during step 303 has a duration long enough to be considered significant. The threshold S is for example equal to "10 s".

If the difference between the instants T ₂ and T is less than the threshold S, the processing module 100 returns to the step 305 already explained.

If the difference between the instants T ₂ and T is greater than or equal to the threshold S, the processing module implements a step 311 during which it stores in a list of consumption differences L the value of the difference in consumption. AT .

Step 311 is followed by a step 312 during which the processing module 100 considers that a user is present in the building. Once a user has been detected in the building, the processing module implements step 31.

Step 312 is followed by a step 318 in which processing module 100 waits for a period Sf. The duration Sf is chosen according to the same criteria as the duration S. In one embodiment, Sf is equal to "1 s".

Step 318 is followed by step 301 already explained.

When, during step 308, the absolute value of the difference Δ ₂ is greater than the threshold S ₃ , the processing module 100 considers that the duration of the consumption variation is insignificant and continues with the step 318 already explained. .

When in step 303, the difference is not between the threshold S and the threshold S ₂ , the processing module 100 proceeds to a step 313 to check if there has not been a drop in consumption. during the last second of measurement representative of a departure of a user of the building. In step 313, the processing module 100 checks whether the difference A lies between a threshold - S ₂ and a threshold - S ₁ . If this is not the case, the processing module implements step 318.

In a step 314, the processing module 100 checks whether a difference equal to the difference value is present in the list of differences L. If this is not the case, the processing module implements step 318. If a difference equal to the difference value Δ-L is present in the difference list L, the processing module 100 removes this difference having a value equal to Δ-L of the list of differences L during a step 315.

In a step 316, the processing module checks whether the list of differences L is empty. If the difference list L is not empty, the processing module 100 continues with step 318. If the difference list L is empty, the processing module 100 deduces in a step 317 that no user is present in building 1. Step 317 is followed by step 318.

The process described in connection with FIG. 4 is an example of a method of detecting a human presence based on an analysis of electrical consumption. In one embodiment, the electric meter 10 is capable of measuring a current consumption per zone. In the example of building 1, the electric meter 10 is able to measure the power consumption independently in each of the zones 17 to 20. In this embodiment, the method of FIG. 4 is implemented in at least one of the zones 17, 18, 19 and 20. For example, the zone 18 being an entrance of the building 1, the method described in relation with FIG. 4 is implemented only in this area.

In one embodiment, the electric meter 10 is capable of measuring a current consumption by type of consumption. For example, the electric meter 10 is able to distinguish the power consumption due to the lighting systems of the building 1, the power consumption due to a heating system, and the power consumption due to other appliances. In the example of the building 1, the electric meter 10 is able to specifically measure an electrical consumption for the lighting systems 13, 14, 15 and 16 regardless of the overall power consumption of the building. In this embodiment, the electric meter 10 considers that a user is present in the building when the power consumption of the lighting systems is greater than a predefined threshold. For example, this threshold is "0, 1W".

In one embodiment, the human presence detection procedure based on an analysis of power consumption includes searching for at least one power consumption profile characteristic of a human presence in building 1. For example, it is not uncommon when a user enters a building, it opens an automatic garage door. A garage door opening causes an always identical increase in electricity consumption (the electricity consumption required to open the automatic garage door) for a period that is always the same (the time required for the garage door to move from a closed position to an open position). During this period, the evolution of electricity consumption is almost systematic. A garage door opening can therefore for example be characterized by a plurality of information recognizable by the electric meter 10, such as for example a level of increase in power consumption, a duration of this increase, a variance of this increase. These three pieces of information constitute a profile which is characteristic of a user's presence in the building 1. In this embodiment, the processing module 10 therefore continually seeks in its energy consumption measurements profiles corresponding to profiles. known.

In one embodiment, the processing module 100 applies a presence detection algorithm based on a search for at least one power consumption profile described in the document "Non-Intrusive Occupancy Monitoring using Smart Meters, D. Chen, S Barker, A. Subbaswamy, D. Irvin, P. Shenoy, University of Massachusetts Amherst.

In one embodiment, the processing module 100 applies a presence detection algorithm described in the article "PresenceSense: Zero-Training Algorithm for Individual Presence Detection Based on Power Monitoring, MingJin et al, University of California, Berkeley".

In one embodiment, each message containing a request to switch to a light sleep mode transmitted during step 31 adopts a format similar to a magic packet type message ("magic packet" in English terminology) of the Wake protocol. -on-Lan (Wake on a LAN (local area network)) described in the document "Magic Packet Technology: White Paper, http://support.amd.com/TechDocs/20213 .pdf ". Wake-on-Lan is an Ethernet network standard that allows a device such as a computer to be remotely powered on. A magic packet is an Ethernet frame containing (in hexadecimal) bytes FF FF FF FF FF FF followed by sixteen repetitions of a MAC address (medium access control: "Medium Access Control" in English terminology). a target device. In this embodiment, a new magic packet is created. This takes the form of an Ethernet frame containing (in hexadecimal) FO FO FO FO FO octets followed by sixteen repetitions of a MAC address (medium access control: "Medium Access Control "in English terminology) of a target device. This new magic package is able to request a passage of a target device in a light sleep mode. In the example of building 1, this new magic package is able to request a passage of the decoder 11 in the light sleep mode.

In one embodiment, each message containing a request to switch to a light sleep mode transmitted during step 31 is transmitted in multicast mode ("broadcast" in English terminology) without specifying a recipient. In this way, by transmitting a single message, the electric meter 10 can request a light sleep mode to several devices simultaneously.

In one embodiment, the method described in connection with FIG. 3 is implemented regularly by the processing module 10. For example, the method described in connection with FIG. 3 is implemented every twenty minutes.

In one embodiment when no human presence has been detected in step 30 (for example following the implementation of step 317), the processing module 10 sends a message requesting a changeover to Deep sleep at the decoder 11.

Fig. 5 schematically illustrates a method for determining a mode of operation of the decoder 11.

The processing module 110 of the decoder 11 is constantly listening to messages from the processing module 100 of the electric meter 10, whether it is in deep sleep mode, in light sleep mode or in active mode.

In a step 51, the processing module 110 receives a message via the communication network requesting a light sleep mode of the decoder 11, the message having been sent by the electric meter 10 following detection of a human presence in building 1 by a human presence detection procedure based on an analysis of the electrical consumption in the electricity network 12.

In a step 52, the processing module 110 switches the decoder 11 into the light sleep mode.

In one embodiment, the decoder 11 may be in a plurality of states according to at least one predetermined criterion. In a first state, said light standby state blocked, the operating mode of the decoder 11 is forced to the light sleep mode. In a second state, says deep standby state blocked, the mode of operation of the decoder 11 is forced to deep sleep mode. In a third state, said intermediate state, the operating mode of the decoder 11 is not constrained. The decoder 11 does not take into account a message requesting a switch to a light sleep mode (or a message requesting a transition to deep sleep mode) of the decoder 11 when it is in the third state.

In one embodiment, a predetermined criterion is a set of time slots including a time slot during which the equipment is in the first state, a time slot during which the equipment is in the second state, and a time slot during which time the equipment is in the first state. equipment is in the third state. For example, in a day of "24 H", the decoder is in the first state between "17 H" and "22 H", in the second state between "0 H" and "6H" and between "22 H" and "0 H" and in the third state the rest of the time. Thus, it suffices for the processing module 110 to know a value of a current instant to know in which state the decoder 11 is located.

There are known methods for automatically determining periods during which a device must be in deep sleep mode or in a light sleep mode. These methods, such as the method described in the patent FR2984541, are based on an analysis of the use of the equipment by one or more users. From this analysis, an equipment processing module determines moments when a probability of use of the equipment is high and where, consequently, the deep sleep mode must be prohibited to allow a fast passage in active mode. . The electronic equipment processing module also determines times when the probability of using the equipment is low and where, as a result, the electronic equipment must be placed in a deep sleep mode to save energy. These methods therefore make it possible to determine time slots in which the equipment is in the first state (ie light sleep state blocked). In addition, on a 24-hour day, periods that do not correspond to time slots during which the equipment is in the first state, are by default considered as time slots during which the equipment may be in the second state (ie deep standby state blocked). In one embodiment, the invention makes it possible to systematically add time slots corresponding to the intermediate state (third state) at the beginning and / or at the end of each time slot during which the equipment (here the decoder 11) is in the first state (light sleep state blocked). For example, if on a day of "24H", a time slot from the start time "H1" to the end time "H2" is determined to be a time slot during which the decoder 11 is in the first state, then a time slot corresponding to the intermediate state is set between "Hi-30 min" and H1 and between H2 and "H2 + 15 min". On a day of "24", the periods that do not correspond to time slots during which the decoder 11 is in the first or third state are considered by default as time slots during which the decoder 11 is in the second state. In some cases, a method suitable for automatically determining periods during which electronic equipment must be in deep sleep mode or in light sleep mode, does not allow to determine with sufficient reliability whether a time slot must correspond to the first state or in the second state. In this case, these time slots are automatically defined as time slots during which the decoder 11 must be in the third state (ie intermediate state).

In one embodiment, the decoder 11 includes an ambient light sensor. In this embodiment, the predetermined criterion depends on an ambient brightness measured by the ambient light sensor. In this embodiment, the decoder 11 is in the first state (light sleep state off) when the ambient light sensor measures a strong brightness higher than a predetermined brightness threshold and in the third state when the ambient light sensor measures a low brightness, below the predetermined brightness threshold. Indeed, when the natural brightness is high, there is little chance that the user turns on the light. In the case of a human presence detection procedure based on an observation of the lighting of a lighting system (such as the method described in connection with Fig. 4), the user would not be detected. . To overcome this, the light sleep mode is forced when the ambient brightness is high. When the ambient brightness is low, a user should turn on the light by entering the building 1. In this case, the processing module can take into account the messages requesting a transition to light sleep mode of the decoder 11 from the electricity meter 10 .

In one embodiment, a plurality of predetermined criteria is used to define the state of the decoder 11 comprising for example a set of time slots and information obtained from a brightness sensor. One of the criteria may prevail over the other. For example, the criterion based on information from brightness can outweigh the time slots. Thus, if in a time zone corresponding to the third state (ie intermediate state), the brightness sensor indicates that the ambient brightness is high, the processing module 110 can put the decoder 11 in the first state (ie light sleep mode state blocked).

Fig. 6 schematically illustrates a detail of the method for determining an operating mode of the decoder 10.

In one embodiment, the method described in connection with FIG. 6 is implemented in step 52.

In a step 521, the processing module 110 receives a message requesting a passage of the decoder 11 in light sleep mode.

In a step 522, the processing module 110 checks whether the decoder 11 is in the light sleep state blocked. If this is the case, in a step 524, the processing module 110 does not perform any action since it is already in the light sleep mode.

Otherwise, the processing module 110 proceeds to a step 523. In the step 523, the processing module 110 verifies whether the decoder 11 is in the deep sleep locked state. If this is the case, in step 524, the processing module 110 does not take into account the message requesting a transition to a light sleep mode and the decoder 11 remains in the deep sleep mode.

When the decoder 11 is neither in the light sleep state blocked, nor in the deep sleep locked state, the processing module 110 implements the step 525. In the step 525, the processing module 110 takes into account the message requesting the passage of the decoder 11 in the light sleep mode and actually puts the decoder 11 in the light sleep mode.

In a variant of the method described with reference to FIG. 6 adapted to the case where the processing module 100 of the electric meter 10 can send messages requesting the passage of the decoder 11 in the light sleep mode and messages requesting the passage of the decoder 1 1 in the deep sleep mode, when the In step 521, the processing module 110 checks the contents of the received message. If the received message contains a request to go into a light sleep mode, step 521 is followed by steps 522 to 525 already explained. Otherwise, the processing module 110 deduces that the message contains a request to go into deep sleep mode and step 521 is followed by a step 527. In step 527 the processing module 110 checks whether the decoder 11 is in the light sleep state blocked. If it is, in a step 529, the processing module 110 does not take into account the message and the decoder 11 remains in the light sleep mode.

Otherwise, the processing module 110 proceeds to a step 528 during which the processing module 110 checks whether the decoder 11 is in the deep sleep locked state. If this is the case, in step 529, the processing module 110 does not take any action since the decoder 11 is already in the deep sleep mode.

When the decoder 11 is neither in the light sleep state blocked, nor in the deep sleep locked state, the processing module 110 implements the step 530. In the step 530, the processing module 110 takes into account the message requesting the passage of the decoder 11 in the deep sleep mode and effectively puts the decoder 11 in the deep sleep mode.

In one embodiment, when the decoder 11 is in the active mode, the processing module 1 10 does not take into account the messages requesting a transition to light sleep mode (respectively a transition to deep sleep mode). It is considered that the decoder 11 can be in the active mode only following a voluntary action of the user.

In one embodiment, the decoder 11 goes into deep sleep mode when it is in a light sleep mode and it does not receive a request message to go into a light sleep mode for a predetermined duration equal for example to "40 min".

Claims

1) System comprising an equipment (11) and an electric meter (10), the equipment (11) being operable in a plurality of operating modes including a deep sleep mode in which a power consumption of said equipment is minimum, an active mode in which the power consumption of the equipment is maximum and a light sleep mode in which the energy consumption of the equipment is intermediate between the deep sleep mode and the active mode, a part of the devices internal equipment being disabled and / or the power to these internal devices being cut off when the equipment goes into a light sleep mode, a transition from the deep sleep mode to the active mode is slower than a change from the sleep mode. light standby in the active mode, the equipment (11) being powered by an electrical network (12) of a building (1) supervised by the electricity meter (10), the equipment (11) and the electricity meter (10) being able to communicate via a communication network, the system being characterized in that the electric meter (10) comprises:

detection means (30) for detecting a human presence in the building by an analysis of the electrical consumption in the electrical network; transmission means (31) for sending a message to the equipment via the communication network requesting a light sleep mode of the equipment when a human presence is detected; and,

in that the equipment (11) comprises:

receiving means (51) for receiving said message via the communication network, and

processing means (52) for moving the equipment into a light sleep mode.

2) A method of managing an operating mode of a device (11) operable in a plurality of operating modes comprising a deep sleep mode in which a power consumption of said equipment (11) is minimum, a mode an asset in which the power consumption of the equipment (11) is maximum and a light sleep mode in which the energy consumption of the equipment (11) is intermediate between the deep sleep mode and the active mode, some of the internal devices of the equipment being disabled and / or the power to these internal devices is cut off when the equipment goes into a light sleep mode, a transition from deep sleep mode to active mode is slower than a transition from light sleep mode to active mode , the equipment (11) being supplied by an electrical network (12) of a building (1) supervised by an electric meter (10) able to communicate with the equipment (11) via a network of communication, the method implemented by the electric meter (10) comprising:

implementing (30) a procedure for detecting a human presence in the building (1) based on an analysis of the electrical consumption in the electrical network (12); and,

when a human presence is detected, send (31) a message to the equipment (11), via the communication network, requesting a switch to light standby mode of the equipment (11). 3) Method according to claim 2, characterized in that the building (1) comprises a plurality of zones (17, 18, 19, 20) and the electric meter (10) is able to measure an electrical consumption in each zone independently said message being sent when a human presence is detected in at least one of the areas.

4) Method according to claim 2 or 3, characterized in that the human presence detection procedure based on an analysis of the power consumption comprises detecting at least one variation of an electrical power consumed in the electrical network (12).

5) Method according to claim 2 characterized in that the building (1) comprises a plurality of devices, each device being associated with a type of power consumption, and in that the electric meter is capable of measuring a current consumption by type power consumption, said message being sent when an electric power consumed greater than a predefined threshold is detected for at least one type of power consumption. 6) Process according to any one of claims 2 to 5 characterized in that the electrical power consumed is that of at least one lighting device (13, 14, 15, 16) supplied by the electrical network (12). 7) Method according to claim 2 or 3, characterized in that the human presence detection procedure based on an analysis of the electrical consumption includes seeking at least a profile of electrical consumption characteristic of a human presence in the building (1) . 8) A method of managing an operating mode of a device (11) operable in a plurality of operating modes comprising a deep sleep mode in which a power consumption of said equipment (11) is minimum, a mode an asset in which the power consumption of the equipment (11) is maximum and a light sleep mode in which the energy consumption of the equipment (11) is intermediate between the deep sleep mode and the active mode, a part of the internal devices of the equipment being deactivated and / or the power of these internal devices being cut off when the equipment switches to light standby mode, a transition from the deep sleep mode to the active mode being slower than transition from the light sleep mode to the active mode, the equipment (11) being powered by an electrical network (12) of a building (1) supervised by an electric meter (10) able to communicate with the equipment (11) by via a communication network, the method implemented by the equipment (11) comprising:

receiving (51) a message via the communication network requesting a switch to light standby mode of the equipment (11), the message having been sent by the electric meter (10) following detection of a presence human in the building (1) by a human presence detection procedure based on an analysis of the electrical consumption in the electrical network (12), and, pass (52) the equipment (11) in light sleep mode.

9) Method according to claim 8, characterized in that the equipment (11) can be in a plurality of states according to at least one predetermined criterion, the plurality of states comprising a first state in which the mode of operation is forced to the light sleep mode and / or a second state in which the mode of operation is forced to deep sleep mode and a third state in which the operating mode is not forced, the equipment (11) not taking into account a message requesting a switch to light standby mode of the equipment (11). ) only when in the third state.

10) Method according to claim 9, characterized in that a predetermined criterion is a set of time slots comprising a time slot during which the equipment (11) is in the first state, a time slot during which the equipment (11) ) is in the second state and a time slot during which the equipment (11) is in the third state.

11) The method of claim 10, characterized in that each time slot corresponding to the first and second states is determined by a procedure for automatically determining periods during which the equipment must be in deep sleep mode or in light watch, said method being based on an analysis of the use of the equipment (11) by at least one user, a time slot of a predetermined duration and corresponding to the third state being added before and after each time slot corresponding to the first state determined by that procedure.

12) Method according to claim 9, characterized in that a predetermined criterion is a brightness level in at least one area of the building (1), the equipment (11) being in the first state when the brightness level is higher at a predefined threshold and in the third state when the brightness level is below said predefined threshold.

13) Electric meter (10) comprising means for implementing the method according to any one of claims 2 to 7. 14) Equipment (11) comprising means for implementing the method according to any one of claims 8 at 12.

15) Computer program, characterized in that it comprises instructions for implementing, by a device (100, 110), the method according to any one of claims 2 to 7 or the method according to any one of claims 8 to 12, when said program is executed by a processor of said device (100, 110).

16) Storage means, characterized in that they store a computer program comprising instructions for implementing, by a device (100, 110), the method according to any one of claims 2 to 7 or the method according to claims 8 to 12, when said program is executed by a processor of said device (100, 110).