• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    There is provided a power supply device (1000) comprising: - a voltage source (100) regulatable in voltage via a regulation signal Vreg, and delivering a source power Ps under a source voltage Vs; a feedback device (110) delivering the regulation signal Vreg as a function of information relating to the source power Ps, the regulation signal Vreg tending to maintain the source power Ps around a reference source power Ps_ref by inducing a reduction, respectively an increase, of the source voltage Vs when the information indicates that the source power Ps increases, respectively decreases; and a buffer supply (120), powered by the voltage source, and contributing to the power output of the power supply device at least when the output power is greater than the reference power source Ps_ref.
    公开号:FR3058006A1
    申请号:FR1660247
    申请日:2016-10-21
    公开日:2018-04-27
    发明作者:Nicolas Guilbaud；Kimmo Vuorinen；Xavier Caitucoli
    申请人:DIRECT ENERGIE；Esoftthings；
    IPC主号:
    专利说明:

    Holder (s): ESOFTTHINGS Simplified joint-stock company, DIRECT ENERGIE Limited company.
    Extension request (s)
    Agent (s): CABINET PATRICE VIDON.
    FR 3 058 006 - A1
    Ç> 4) POWER SUPPLY DEVICE AND CORRESPONDING COMMUNICATION SYSTEM.
    ©) An electrical supply device (1000) is proposed comprising:
    - a voltage source (100) adjustable in voltage via a regulation signal V reg , and delivering a source power P s under a source voltage V s ;
    - a feedback device (110) delivering the regulation signal V reg as a function of information relating to the source power P s , the regulation signal V reg tending to maintain the source power P s around a source power of reference P s ref by inducing a reduction, respectively an increase, in the source voltage V s when the information indicates that the source power P s increases, respectively decreases; and
    - a buffer supply (120), supplied by the voltage source, and contributing to the output power of the electrical supply device at least when the output power is greater than the reference source power Ps_ref-
    7 '
    i
    Power supply device and corresponding communication system.
    TECHNICAL AREA
    The field of the invention is that of the electrical supply of electronic systems consuming a peak electrical power greater than an available electrical supply power, at least during certain phases of their operation.
    More specifically, the invention relates to a power supply device for such an electronic system, the power supply device according to the technique described being itself supplied by a power supply of power lower than the peak electrical power in question.
    The invention has numerous applications, in particular but not exclusively for supplying communication devices present in an environment of limited available electrical power (such a communication device conventionally having peaks in electrical consumption during transmission and / or reception of data frames). By way of example, mention may be made of the so-called ERL communication systems (for “Linky Radio Transmitter”) intended to equip the Linky ™ electric meters of the company Enedis.
    TECHNOLOGICAL BACKGROUND
    The Linky ™ electric meters from Enedis provide a specific interface called TIC (for "Tele-Information Client") allowing to connect an ERL communication system intended for the transmission of data from the meter to a user.
    Such an ICT interface notably includes a connector intended for supplying the ERL system. This power supply is sized to deliver an alternating voltage at 50kHz which can vary from 13V RMS (for “Root Mean Square” in English) when empty, up to 6V RMS when fully charged. Furthermore, this power supply is specified to be able to deliver 130mW when the meter is new. However, this power can drop to 90mW after two years of operation.
    Beyond the regulatory aspect of such a power supply which seems necessary in view of the announced variations, it appears at first sight that the power available at the terminals of this power supply can only supply ERL systems based on communication systems deemed to be low consumption. Indeed, the products advertised are based on standards such as Zigbee or Konnex (or KNX) at
    868MHz.
    However, the purpose of an ERL system is to allow data from the meter to be transmitted to a user. However, it turns out that the communication standards present in the various devices (smartphone, computer, etc.) conventionally used by such a user to communicate with their connected objects are de facto different from the standards mentioned above. Indeed, such equipment is nowadays equipped by default with technologies such as Bluetooth or WiFi.
    Thus, the user has an immediate interest in being able to communicate with a meter of the Linky ™ type using such technology already present in his equipment, thereby avoiding having to equip himself with a new means of communication.
    However, it seems at first glance that the electrical powers that can be delivered by such a meter via its TIC interface are incompatible with the electrical consumption necessary for a communication module of the Bluetooth or WiFi type. For example, the typical consumption of a WiFi transmitter is of the order of 1W when transmitting data, and that of a WiFi receiver is of the order of 100mW when receiving data.
    Direct feeding of such a system via an ICT interface is therefore impossible. Furthermore, it appears that the system delivering the power supplied by the meter via its TIC interface becomes safe as soon as we draw a power greater than the power it is capable of delivering, thereby generating system restart issues.
    There is thus a need for a supply device allowing an electronic system to operate, although consuming, during at least certain phases of its operation, an electrical power greater than the power of the supply which is available to supply it. .
    There is also a need for such a supply device to guarantee that the power delivered by the available power supply remains less than the maximum power that the latter can deliver, thereby preventing the latter from going into a mode. of security.
    ABSTRACT
    In one embodiment of the technique described, there is provided an electrical supply device configured to deliver an output power. Such an electrical supply device comprises:
    a voltage source delivering a source power P s at a source voltage V s , the voltage source being voltage regulatable via a regulation signal V reg ; a feedback device delivering the regulation signal V reg as a function of information relating to the source power P s , the regulation signal V reg tending to maintain the source power P s around a reference source power P s re f by inducing a reduction, respectively an increase, in the source voltage V s when the information indicates that the source power P s increases, respectively decreases; and a buffer power supply, supplied by the voltage source, and configured to deliver a buffer power contributing to the output power at least when the output power is greater than the reference source power P s re f.
    Thus, the invention proposes a new and inventive solution to allow the supply of electronic systems requiring an electrical power greater than that available at the terminals of a given voltage source during certain phases of their use.
    To do this, the technique described proposes using a buffer power supply configured to contribute to the power delivered to the electronic system in question. The buffer supply is thus able to absorb the power peaks necessary for the operation of the electronic system while recharging near the voltage source at other times.
    Furthermore, the feedback device according to the technique described makes it possible to adjust the voltage delivered by the voltage source so as to tend to regulate the source power around a reference source power P s re f. This makes it possible to obtain that the power requested from the voltage source remains below a predetermined maximum source power P s _ max that the latter can deliver, thereby avoiding a fault in the voltage source and / or his own diet.
    Indeed, in the absence of such regulation, such a fault could for example happen during the supply phases of a system requiring an electrical power greater than the maximum source power P s _ max which can be delivered by the voltage source. Similarly, in certain embodiments, such a fault could also occur during the recharging phases of the buffer supply when the latter has a maximum power greater than the maximum source power P sm ax · Indeed, it would then be likely to draw on the voltage source a current corresponding to a power greater than P s _max l ° rs of its recharge in this case.
    According to one embodiment, the electrical supply device further comprises means for deactivating the feedback device when the information representative of the source power P s indicates a source power P s below a predetermined threshold.
    Thus, it is possible to regulate the voltage source power only when the source power P s approaches the maximum source power P s max that the latter can deliver. A "limiter" type behavior of the source power P s is obtained through cooperation between the controllable voltage source, the feedback means and the inactivation means according to the described technique.
    According to a particular characteristic, the inactivation means comprise a diode.
    Thus, the implementation obtained is particularly simple and robust.
    According to one embodiment, the feedback device comprises a sensor configured to measure a current delivered by the voltage source, the information representative of the source power P s corresponding to the measured delivered current.
    Thus, the voltage delivered by the voltage regulatable voltage source being determined elsewhere (eg the reference voltage V s re f corresponding to its operating point in the absence of a setpoint coming from the feedback device according to the technique described), a simple current measurement makes it possible to determine whether the source power delivered by the voltage source is greater or less than P s re f. The resulting implementation is therefore particularly simple and robust.
    According to one embodiment, the voltage source comprises a DC / DC converter of the voltage-adjustable chopper type via a servo input. The regulation signal corresponds to a return voltage V reg applied to the servo input of said DC / DC converter of the chopper type.
    Thus, such a DC / DC converter (also called DC / DC circuit), as it is conventionally available commercially, can be reused as it is via its servo input dedicated to determining its operating point.
    According to one embodiment, the electrical supply device further comprises a non-return device limiting a return of current from the buffer supply to the voltage source.
    Such a device thus forces the current delivered by the buffer power supply to the load of the described electrical power supply. In this way, a current is always drawn from the voltage source, even if an additional current is delivered by the buffer supply in order to deliver to the load an electrical power greater than the maximum source power P s _ max . Thus, the correct operation of the voltage source (eg a DC / DC circuit) is ensured, such a device ensuring that the voltage source does not block.
    According to one embodiment, the electrical supply device further comprises an AC / DC conversion device supplying the voltage source.
    Thus, such an AC / DC conversion device (also called a "rectifier") makes it possible to supply the supply device described with alternating current and voltage even though the voltage source requires a DC power supply, as it is for example for conventionally available DC / DC circuits.
    In another embodiment, a communication system is proposed. Such a communication system includes:
    an electrical power supply device as described above, according to any one of its embodiments; and a communication device powered by the power supply device; the communication device requiring an instantaneous power greater than the reference power P s re f during at least one operating phase of finite duration.
    Thus, it is possible to use a communication device requiring an instantaneous power greater than the maximum power P s _ max which can be delivered by the voltage source, and this for a finite duration. To do this, the buffer supply is dimensioned to store the surplus energy necessary for the device during the finite period in question.
    In one embodiment, the communication system further comprises: a device for measuring a voltage V ana delivered by the buffer supply; and means for authorizing a transmission of data by the communication device, as a function of a comparison between a measurement supplied by the measurement device and a voltage threshold.
    Thus, data transmission can be conditioned to a sufficient load of the buffer supply. This ensures that this transmission will take place in good conditions of power supply to the communication device.
    According to a particular characteristic, the authorization means comprise a processor or a dedicated calculation machine configured to supply at least one data frame to said communication device when the measurement of a voltage V ana corresponds to a sufficient load of the buffer supply to allow transmission of the data frame by the communication device.
    Thus, a communication device as conventionally available commercially (e.g. a WiFi radio circuit) can be reused as is. Indeed, such a commercial circuit sends the data frames "as soon as possible" (i.e. as soon as the network authorizes such an operation) when the latter are supplied to it. Thus, the conditioning of this supply of frame (s) to a sufficient load of the buffer supply using a third-party system makes it possible to guarantee that the transmission of the corresponding frame will take place under good conditions of power supply to the communication device, without modification of the latter.
    In yet another embodiment, an electric meter is proposed. Such an electric meter comprises a communication system as described above, according to any one of its embodiments. Thus, the characteristics and advantages of this electric meter are the same as those of the communication system described above and are therefore not detailed further.
    LIST OF FIGURES
    Other characteristics and advantages of the invention will appear on reading the following description, given by way of an indicative and nonlimiting example, and the appended drawings, in which:
    Figure 1 illustrates the structure of a particular embodiment of an electric meter comprising a communication system comprising a power supply device and a communication device; FIG. 2 illustrates an example of the temporal evolution of the quantities involved in the operation of the regulation of the voltage source of the electrical supply device of the communication system of FIG. 1; and FIG. 3 illustrates an example of the temporal evolution of the output voltage of the power supply device of the communication system of FIG. 1, in a scenario of operation of the communication device of the communication system of FIG. 1.
    DETAILED DESCRIPTION OF THE INVENTION
    In all the figures in this document, identical elements and steps are designated by the same reference.
    The general principle of the technique described consists of an electrical power supply device comprising a voltage regulable voltage source, a feedback device acting on the source voltage delivered by the voltage source and tending to maintain the source power delivered by the source. of voltage around a reference source power, and a buffer power supply configured to deliver a buffer power contributing to the output power of the power supply device at least when the output power of the power supply device is greater than a power reference source.
    Thus, the buffer supply is able to absorb the power peaks necessary for the operation of an electronic system while recharging near the voltage source at other times.
    Furthermore, the feedback device according to the technique described makes it possible to obtain that the power requested from the voltage source remains less than a maximum source power, thereby avoiding a fault in its own power supply in the event that -this is limited in power.
    We will now describe, in relation to FIG. 1, the structure of a particular embodiment of an electric meter comprising a communication system comprising an electrical supply device and a communication device.
    According to this embodiment, the communication system is supplied with electricity by an electrical supply 190 of maximum supply power P m ax supplied by the electric meter 1010, for example the supply supplied via a TIC bus of a Linky meter ™.
    Furthermore, the communication system comprises a communication device 160 intended to communicate with user equipment. More particularly, the communication device 160 comprises a modem 160b (or “modulator-demodulator”) intended inter alia to generate and supply to the radiofrequency transceiver 160a the radio waveforms from the data frames to be transmitted to the user equipment, and vice versa, to estimate the data received from the user equipment on the basis of the radio signals supplied to it by the receiver part of the radiofrequency transceiver 160a.
    The communication device 160 is also based on a radio frequency standard requiring an instantaneous power greater than the maximum supply power P max during at least one operation phase of finite duration. It is for example a Bluetooth or WiFi standard.
    So that the communication device 160 can be supplied correctly during all of its operating phases without a power greater than the maximum supply power P max being supplied from the power supply 190, an electrical supply device 1000 is disposed between the electrical supply 190 and the communication device 160. Such an electrical supply device 1000 comprises:
    a voltage source 100 delivering a source power P s at a source voltage V s , the voltage source 100 being voltage regulatable via a regulation signal V reg ;
    a feedback device 110 delivering the regulation signal V reg as a function of information relating to the source power P s . Such a regulation signal V reg tends to maintain the source power P s around a reference source power P s re f by inducing a reduction, respectively an increase, in the source voltage V s when the information indicates that the power source P s increases, respectively decreases; and a buffer power supply 120, supplied by the voltage source 100, and configured to deliver a buffer power contributing to the output power of the power supply device 1000 at least when the output power is greater than the reference source power P s re f.
    Thus, the cooperation of the feedback device 110 with the control system of the source voltage V s delivered by the voltage source 100 on the basis of the regulation signal V reg makes it possible to obtain that the power requested from the voltage source 100 remains below a predetermined maximum source power P s max that the latter can deliver without inducing a fault in the power supply 190. In practice, the voltage source 100 necessarily has a finite efficiency. In other words, when the power supply 190 delivers a source power P s , it itself consumes an electrical power also taken from the power supply 190. Thus, the maximum source power P s max is chosen ίο less than the maximum supply power P max so that when the source power P s delivered by the voltage source 100 approaches this value P s _max, the power requested from the power supply 190 remains less than the power maximum supply P max , thereby avoiding a potential fault in the power supply 190.
    Likewise, the reference source power P s re f is chosen to be less than the maximum source power P s max so that the source power P s remains less than the maximum source power P s max despite the fluctuations resulting from the latencies and other uncertainties in the values of components used to implement the different functionality described above. Such fluctuations are also described also below in relation to FIG. 2.
    In the embodiment of FIG. 1, the voltage source 100 comprises a DC / DC converter of the chopper type (also called DC / DC circuit) 100a, voltage regulatable via a servo input 100c, for example a circuit LM53600 marketed by the company Texas Instrument. Such a circuit has the advantage of having a very good conversion efficiency while having the possibility of being regulated in voltage as is necessary in the technique described.
    According to this embodiment, a divider bridge based on the use of resistors 100b defines the default value applied to the servo input 100c so as to define a reference voltage V s re f to be delivered by the source of voltage 100. In practice, this reference voltage V s re f here corresponds to the supply voltage under which the RF and analog parts of the communication device 160 must be supplied.
    The regulation signal corresponds in this case to a return voltage V reg applied to the servo input 100c and superimposed on the default value defined by the resistive bridge.
    In another embodiment (not illustrated), the voltage source 100 comprises a linear regulator of the LDO type (for “low-dropout” in English), having a lower efficiency than a DC / DC, but not having any problem of generating harmonic frequencies of the chopping frequency (such frequencies can indeed pollute the RF parts of the communication device 160). In this other embodiment, the servo input to which the regulation signal V reg is applied corresponds to the input of the LDO to which the reference voltage is applied. The regulation signal corresponds to a return voltage V reg applied to this servo input 100c and superimposed on the reference voltage.
    In the embodiment of FIG. 1, the feedback device 110 comprises a sensor composed of a resistor 110a and a differential amplifier 110b configured to measure a current l s delivered by the voltage source 100. In fact, the source voltage V s delivered by the voltage source 100 being known elsewhere (eg the reference voltage V s re f corresponding to its operating point in the absence of a setpoint coming from the feedback device according to the technique described), a simple current measurement makes it possible to determine whether the source power delivered by the voltage source is greater than or less than P s re f. Thus, according to this embodiment, the information representative of the source power P s corresponds to the current l s delivered by the voltage source 100. The resulting implementation is thus particularly simple and robust.
    In another embodiment, the current l s is measured by a Hall effect sensor placed in place of the resistor 110a.
    In yet another embodiment, an RMS type power detector is used. In this way, the source power P s is directly evaluated and used to regulate the system.
    In the embodiment of FIG. 1, the electrical power supply device 1000 also comprises means of inactivation 115 of the feedback device 110 when the information representative of the source power P s indicates a source power P s of less than one predetermined threshold. For example, a diode 115 makes it possible to apply the signal delivered by the feedback device 110 to the servo input 100c only if the signal delivered induces at the terminals of the diode 115 a voltage greater than the conduction threshold of the latter. .
    For example, an adequate dimensioning of the resistor 110a and of the gain of the differential amplifier 110b makes it possible to obtain this conduction of the diode 115 only if the current l s delivered by the voltage source 100 is greater than a reference current l s re f. In this way, the feedback device 110 only becomes effective in regulation when the information representative of the source power P s corresponds to a source power P s greater than the reference source power P s _ re f which is in this case given by V s re f * l s re f. In this way, a behavior tending to replicate that of a “limiter” of the source power P s is obtained.
    In the embodiment of FIG. 1, the electrical supply device 1000 also comprises an AC / DC conversion device 140 (also called “rectifier”) making it possible to convert the AC voltage supplied by the electrical supply 190 into a voltage DC suitable for supplying the voltage source 100 (eg based on DC / DC or LDO). Such an AC / DC conversion device 140 comprises a diode rectifier bridge 140a (which can be full wave as shown in FIG. 1, but also full wave), and a low pass filter 140b delivering an average value of the rectified signal.
    In other embodiments, the voltage source 100 operates directly on the basis of an alternating voltage delivered by the power supply 190. For example, the voltage source 100 comprises a dimmer making it possible to deliver a value alternating voltage effective variable according to a regulation signal V reg . The regulation signal V reg is delivered by a feedback device 110 based for example on an RMS type detector.
    In the embodiment of FIG. 1, the AC / DC conversion device 140 is arranged downstream of the feedback device 110, so as to supply the communication device 160 with DC voltage and current.
    In the embodiment of FIG. 1, the electrical supply device 1000 further comprises a non-return device 130 (eg a diode) limiting a return of current from the buffer supply 120 to the voltage source 100. Thus , when a current is delivered by the buffer supply, the latter can only flow towards the communication device 160. In this way, a current is always drawn from the voltage source 100, even if it is a complement of current is delivered by the buffer supply 120 in order to deliver to the communication device 160 an electrical power greater than the maximum source power P s _ max . Thus, such a device makes it possible to guarantee that the voltage source 100 does not block, for example when the latter is implemented using a DC / DC converter.
    In the embodiment of FIG. 1, the buffer supply 120 is implemented in the form of a capacity. In other embodiments, the buffer supply 120 is implemented in the form of a rechargeable battery. The capacity of the buffer supply 120 is dimensioned to allow the storage of the surplus energy necessary for the operation of the communication device 160 during the operating phases during which the latter requires an electrical power greater than the reference source power P s re f.
    In the embodiment of FIG. 1, the communication system further comprises a measurement device 150 (eg an analog-to-digital converter) of a voltage V ana delivered by the buffer supply 120 as well as authorization means for a data transmission by the communication device 160, as a function of a comparison between a measurement supplied by the measurement device 150 and a predetermined voltage threshold. Thus, the data transmission can be conditioned to a sufficient load of the buffer supply 120. This makes it possible to guarantee that this transmission will take place in good conditions of electrical supply to the communication device 160, in particular that the voltage V ana delivered by the buffer supply 120 will not drop below the minimum voltage level acceptable to the communication device 160.
    In a variant, the authorization means are integrated into the modem 160b of the communication device 160 (eg a software functionality implemented in the management layer of the physical layer of the communication device 160 and receiving the measurement information carried out by the device 150 via a dedicated interface bus), the latter conditioning a data transmission to the result of the comparison between the measurement provided by the measurement device 150 and the voltage threshold.
    In another variant, the authorization means take the form of a dedicated processor or computing machine 170 configured to supply at least one data frame, via a dedicated interface bus 165, to the device communication 160 when the measurement of the voltage V ana corresponds to a sufficient load of the buffer supply 120 to allow transmission of the data frame by the communication device 160. In this way, a radio frequency circuit of the WiFi or Bluetooth type as commercially available can be reused as it is (for example a BCM4343 circuit sold by the company Cypress).
    Indeed, such a commercial circuit sends the data frames "as soon as possible" (i.e. as soon as the network authorizes such an operation) when the latter are supplied to it. Thus, the conditioning of this supply of frame (s) to a sufficient load of the buffer supply using the processor or of the dedicated calculation machine 170 makes it possible to guarantee that the transmission of the corresponding frame will take place in good power supply conditions for the communication device, without modification of the communication device 160.
    In these variants, the dedicated interface bus 165 may take the form of an I2C bus (for “Inter-integrated Circuit” in English), SDIO (for “Secure Digital Input Output” in English), SPI (for “Serial Peripheral Interface "in English) or UART (for" Universal Asynchronous Receiver Transmitter "in English).
    In the embodiment of FIG. 1, the electrical supply device 1000 further comprises a voltage converter 180 of the DC / DC type making it possible to convert the voltage V ana delivered by the electrical supply device 1000 to a higher voltage. low suitable for supplying the digital parts of the communication device 160.
    We will now describe, in relation to FIG. 2, the temporal evolution of the magnitudes involved in the operation of the regulation of the voltage source of the power supply device 1000 of the communication system of FIG.
    1.
    As detailed above, the voltage source 100 includes a DC / DC circuit 100a that can be regulated in voltage via a servo input 100c. The feedback device 110 comprises a sensor composed of a resistor 110a and a differential amplifier 110b configured to measure a current l s delivered by the voltage source 100.
    When the power supply device 1000 is energized, the source voltage V s increases by a zero value at time t = 0 until the reference voltage value V s re f at time t = t a , this reference value being imposed by the signal V reg o resulting from the divider bridge constituted by the resistors 100b. It should be noted that the voltages V s and V reg are proportional to each other as long as the feedback device 110 is inactivated via the inactivation means 115.
    Furthermore, from the instant t = 0 a non-zero source current l s is drawn so as to load in particular the buffer supply 120. However, in the present case, this source current l s never reaches the value of the current reference l s re f corresponding to the activation threshold of the feedback device 110, the buffer supply 120 being charged mainly before the source voltage V s reaches the reference voltage value V s re f .
    However, at time t = t a b a large current call results from a change in the operating state of the communication device 160 (for example linked to the triggering of a transmission of a data frame).
    At the instant t = tb the source current l s delivered by the voltage source 100 exceeds the value of the reference current l s re f. The feedback device 110 is activated, ie the voltage value delivered by the differential amplifier 110b induces a voltage greater than the threshold voltage of the diode 115 at the terminals of the latter. In this way, the feedback signal delivered by the feedback device 110 is taken into account at the level of the servo input 100c, thereby leading to an increase in the regulation voltage V reg . The source voltage V s is reduced by the DC / DC circuit 100a, thereby inducing a reduction in the source current l s drawn by the load of the voltage source 100 until the latter again becomes lower than the value of the reference current l s re f at time t = t c .
    At the instant t = t c , the current being less than the value of the reference current l s re f, the feedback device 110 is inactivated again by the inactivation means 115. The regulation voltage V reg is at new imposed only by the divider bridge constituted by the resistors 100b. The voltages V s and V reg are again proportional to one another until an instant t = tj when the source current l s drawn by the load again becomes greater than the value of the reference current l s re f. A phase identical to that described above in relation to the events between the instants t = tb and t = t c begins again.
    Furthermore, the voltage V ana present at the output of the electrical supply device 1000 remains relatively constant even for instants after the instant t = tb, the buffer supply compensating at first order the fluctuations of the source voltage V s .
    A description will now be given, in relation to FIG. 3, of the temporal evolution of the output voltage of the power supply device 1000 of the communication system of FIG. 1, in an operating scenario of the communication device 160.
    In this embodiment, the communication device 160 is based on a WiFi communication standard.
    Before time t = ti, the communication device 160 is on standby and the buffer supply is loaded. The power consumed by the communication device 160 is thus less than the reference source power P s re f. The power consumed is delivered by the voltage source 100, the buffer supply 120 remaining at its maximum load. The voltage V ana present at the output of the electrical supply device 1000 is at its maximum value V ana max . The measurement device 150 thus delivers a measurement of the voltage V ana to the processor or to the dedicated calculation machine 170 indicating that the load of the buffer supply 120 is sufficient to allow a transmission of a data frame by the communication 160 if necessary.
    At time t = ti, the communication device 160 receives a network control frame (eg a frame called "beacon" in the WiFi standard). The communication device 160 consumes a power Prx which is found to be greater than the reference source power P s re f. The buffer power supply 120 delivers a buffer power contributing to the power supplied by the electrical supply device 1000 to the communication device 160. The voltage V ana drops as a function of the discharge of the buffer power supply 120.
    At the instant t = t2, the communication device 160 enters a mode of communication with the network in order to report data to the network, the processor or to the dedicated calculation machine 170 having supplied the latter with at least one data frame following the measurement carried out by the measuring device 150. This communication mode extending over the duration X = t3-t2 is characterized by a succession of reception ("RX") and transmission (" TX ”) of data frames requiring an electrical power appreciably sized by the power Ργχ necessary for the transmission. The buffer power supply 120 delivers a buffer power contributing mainly to the power supplied by the power supply device 1000 to the communication device 160 (ie the power of the buffer power supply 120 is greater than that of the voltage source 100). The voltage V ana drops appreciably, as a function of the discharge of the buffer supply 120. However, an adequate dimensioning of the buffer supply 120 as a function of the power Ργχ and the duration τ makes it possible to guarantee that the voltage V ana does not not fall below a minimum value V an a_min necessary for the proper functioning of the communication device 160.
    At time t = t3, the communication device 160 returns to standby mode and again consumes a power lower than the reference source power P s re f. The power consumed is delivered by the voltage source 100 and the additional power delivered by the voltage source 100 enables the buffer supply 120 to be charged.
    During this phase of recharging the buffer supply 120, the feedback device 110 makes it possible to guarantee that the source power P s delivered by the voltage source 100 remains less than the maximum source power P s max . Indeed, the power of the buffer supply 120 being greater than that of the voltage source 100, it would be likely to draw from the voltage source a current corresponding to a power greater than P s max when it is recharged. Furthermore, the voltage V ana present at the output of the electrical supply device 1000 increases again as a function of the load of the buffer supply 120 up to its maximum value Vana_max ·
    The measuring device 150 delivers a measurement of the voltage V ana to the processor or to the dedicated calculation machine 170 indicating that the load of the buffer supply
    120 is again sufficient to allow transmission of a data frame by the communication device 160 if necessary.
    At time t = t4, the communication device 160 again receives a network control frame and a sequence identical to that described above in relation to the events subsequent to time t = ti begins again.
    权利要求:
    Claims (11)
    [1" id="c-fr-0001]
    1. Power supply device (1000) configured to deliver an output power, characterized in that it comprises:
    a voltage source (100) delivering a source power P s at a source voltage V s , said voltage source being voltage regulatable via a regulation signal V reg ;
    a feedback device (110) delivering said regulation signal V reg as a function of information relating to the source power P s , said regulation signal V reg tending to maintain the source power P s around a reference source power P s re f by inducing a reduction, respectively an increase, of said source voltage V s when said information indicates that the source power P s increases, respectively decreases; and a buffer power supply (120), supplied by said voltage source, and configured to deliver a buffer power contributing to said output power at least when said output power is greater than the reference source power P s re f.
    [2" id="c-fr-0002]
    2. An electrical supply device according to claim 1, further comprising means for inactivation (115) of the feedback device when said information representative of the source power P s indicates a source power P s below a predetermined threshold.
    [3" id="c-fr-0003]
    3. Power supply device according to claim 2, wherein said inactivation means comprise a diode.
    [4" id="c-fr-0004]
    4. Power supply device according to any one of claims 1 to 3 wherein said feedback device comprises a sensor (110a, 110b) configured to measure a current delivered by said voltage source, said information representative of the source power P s corresponding to said measured delivered current.
    [5" id="c-fr-0005]
    5. An electrical supply device according to any one of claims 1 to 4, in which the voltage source (100) comprises a DC / DC converter of the chopper type which can be regulated in voltage via a servo input (100c), and wherein said regulation signal corresponds to a return voltage V reg applied to the servo input of said DC / DC converter of the chopper type.
    [6" id="c-fr-0006]
    6. Power supply device according to any one of claims 1 to 5, further comprising a non-return device (130) limiting a return of current from said buffer supply to said voltage source.
    [7" id="c-fr-0007]
    7. Power supply device according to any one of claims 1 to 6, further comprising an AC / DC conversion device (140) supplying said voltage source.
    [8" id="c-fr-0008]
    8. Communication system characterized in that it comprises:
    an electrical supply device (1000) according to any one of claims 1 to 7; and a communication device (160) powered by said power supply device;
    said communication device requiring an instantaneous power greater than said reference power P s re f during at least one operating phase of finite duration (τ).
    [9" id="c-fr-0009]
    9. Communication system according to claim 8, further comprising:
    a device for measuring (150) a voltage V ana delivered by said buffer supply; and means for authorizing (160b, 170) a transmission of data by the communication device, as a function of a comparison between a measurement supplied by the measuring device and a voltage threshold.
    The communication system according to claim 9, in which the authorization means comprise a processor or a dedicated calculation machine (170) configured to supply at least one frame of data to said communication device when said measurement of a voltage V ana corresponds to a sufficient charge of said buffer supply to allow transmission of said
    [10" id="c-fr-0010]
    10 data frame by said communication device.
    [11" id="c-fr-0011]
    11. Electric meter (1010) characterized in that it comprises a communication system according to any one of claims 8 to 10.
    1/2
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    同族专利:
    公开号 | 公开日
    EP3529876A1|2019-08-28|
    FR3058006B1|2018-12-07|
    WO2018073301A1|2018-04-26|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US20100327655A1|2008-02-26|2010-12-30|Shinichiro Okamoto|Power supply apparatus|
    WO2012042898A1|2010-09-30|2012-04-05|パナソニック株式会社|Overpower protection circuit and power supply apparatus|
    FR3033898A1|2015-03-18|2016-09-23|Electricite De France|DEVICE AND METHOD FOR TRANSMITTING DATA FROM AN ELECTRIC COUNTER|
    FR3096813B1|2019-05-29|2021-06-25|Total Direct Energie|Method and electronic device for controlling a communication system for an electric meter, computer program and associated electronic transmission installation|
    FR3097390B1|2019-06-17|2021-10-29|Total Direct Energie|Control method for the implementation of a communication system for an electricity meter, computer program and associated electronic device|
    FR3100409B1|2019-08-30|2021-07-30|Total Direct Energie|Electronic system and method for generating at least one data frame according to an ICT protocol in historical mode, electronic transmission installation and associated computer program|
    FR3102282A1|2019-10-21|2021-04-23|Total Direct Energie|Data exchange process between entities and a measurement system|
    FR3104293A1|2019-12-10|2021-06-11|Total Direct Energie|Method and electronic device for managing the display of information relating to an electricity meter, associated computer program and electronic transmission installation|
    FR3113331A1|2020-08-07|2022-02-11|Total Direct Energie|Method and electronic device for validating a pairing of a communication system with an electric meter and associated computer program|
    法律状态:
    2017-10-30| PLFP| Fee payment|Year of fee payment: 2 |
    2018-04-27| PLSC| Publication of the preliminary search report|Effective date: 20180427 |
    2018-10-23| PLFP| Fee payment|Year of fee payment: 3 |
    2019-10-23| PLFP| Fee payment|Year of fee payment: 4 |
    2020-10-22| PLFP| Fee payment|Year of fee payment: 5 |
    2021-09-28| PLFP| Fee payment|Year of fee payment: 6 |
    2021-12-24| TQ| Partial transmission of property|Owner name: LACROIX ELECTRONICS CESSON, FR Effective date: 20211115 Owner name: DIRECT ENERGIE, FR Effective date: 20211115 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1660247|2016-10-21|
    FR1660247A|FR3058006B1|2016-10-21|2016-10-21|POWER SUPPLY DEVICE AND CORRESPONDING COMMUNICATION SYSTEM.|FR1660247A| FR3058006B1|2016-10-21|2016-10-21|POWER SUPPLY DEVICE AND CORRESPONDING COMMUNICATION SYSTEM.|
    PCT/EP2017/076601| WO2018073301A1|2016-10-21|2017-10-18|Electrical power supply device and corresponding communication system|
    EP17784651.6A| EP3529876A1|2016-10-21|2017-10-18|Electrical power supply device and corresponding communication system|
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