WO2014115286A1 - Système d'économie d'énergie dans une communication par ligne électrique, dispositif de communication par ligne électrique et procédé d'économie d'énergie - Google Patents

Système d'économie d'énergie dans une communication par ligne électrique, dispositif de communication par ligne électrique et procédé d'économie d'énergie Download PDF

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Publication number
WO2014115286A1
WO2014115286A1 PCT/JP2013/051476 JP2013051476W WO2014115286A1 WO 2014115286 A1 WO2014115286 A1 WO 2014115286A1 JP 2013051476 W JP2013051476 W JP 2013051476W WO 2014115286 A1 WO2014115286 A1 WO 2014115286A1
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Prior art keywords
power line
line communication
power
activation signal
unit
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PCT/JP2013/051476
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English (en)
Japanese (ja)
Inventor
小川　誠
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イーエムシー株式会社
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Priority to PCT/JP2013/051476 priority Critical patent/WO2014115286A1/fr
Publication of WO2014115286A1 publication Critical patent/WO2014115286A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/54—Systems for transmission via power distribution lines
    • H04B3/544—Setting up communications; Call and signalling arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/02—Details
    • H04L12/12—Arrangements for remote connection or disconnection of substations or of equipment thereof
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/50—Reducing energy consumption in communication networks in wire-line communication networks, e.g. low power modes or reduced link rate

Definitions

  • the present invention relates to a power saving system, a power line communication apparatus, and a power saving method capable of saving power during standby in power line communication.
  • Power line communication is a technology for performing communication between a plurality of power line communication devices connected via a power line.
  • it is generally necessary to activate the power line communication device even when power line communication is not being performed. For this reason, there is a problem that the power line communication device operates even when communication is not occurring and power is continuously consumed during the reception standby time.
  • Patent Document 1 discloses that a first communication mediating apparatus that communicates with an external network server pauses when all the stop states of all user terminals are detected by communication, and starts up instructions. The technology to be activated by is described.
  • a general power line communication device operates even when communication is not occurring, and there is a problem that power is continuously consumed.
  • the standby power consumption of the power line communication device is relatively non-negligible in the entire power saving system, and it is a big problem that the power saving device consumes power wastefully.
  • power line communication can be cut off in the hibernation state by using another communication means such as wireless or wake-on-run to return from the hibernation state.
  • another communication means such as wireless or wake-on-run to return from the hibernation state.
  • the merit of power line communication that the equipment investment can be minimized is lost.
  • these communication means consume standby power, they do not solve the fundamental problem of power saving.
  • the present invention provides a power saving system for power line communication, which can realize power saving by interrupting power line communication during standby without impairing the merit of power line communication that can minimize capital investment, and power line It is an object to provide a communication device and a power saving method.
  • the present invention has been made to solve the above-described problems, and is characterized by the following.
  • the power saving system in power line communication according to claim 1 is a power saving communication in power line communication that performs communication using a plurality of power line communication devices including a power line communication unit that performs transmission and reception of communication packets via the power line.
  • the power line communication device on the transmission side includes a start signal transmission unit that transmits a start signal using a frequency in a band not used by the power line communication unit to the power line
  • the power line communication device on the reception side includes: An activation signal receiving unit that receives an activation signal transmitted from the activation signal transmission unit from a power line, and the power line communication unit included in the power line communication device on the receiving side is in a power saving mode when a predetermined condition is satisfied.
  • the activation signal receiving unit receives the activation signal
  • the activation signal receiving unit returns from the power saving mode.
  • the invention described in claim 2 has the following features in addition to the features of the invention described in claim 1 described above. That is, the power line communication unit included in the power line communication device on the receiving side is in a power saving mode after performing processing based on a communication packet received by the power line communication unit.
  • the invention described in claim 3 is characterized by the following points in addition to the characteristics of the invention described in claim 1 or 2. That is, the power line communication unit included in the power line communication device on the receiving side is in a power saving mode when power line communication does not occur even after a predetermined time has elapsed after the reception of activation by the activation signal receiving unit is completed. It is characterized by.
  • (Claim 4) 5.
  • the power line communication device wherein a power line communication unit that performs transmission and reception of communication packets via a power line communication path, and an activation signal that uses a frequency in a band that is not used by the power line communication unit are received from the power line.
  • the power line communication unit enters a power saving mode when a predetermined condition is satisfied, and returns from the power saving mode when the activation signal receiving unit receives the activation signal. It is characterized by doing.
  • the power saving method in power line communication according to claim 5 is in power line communication in which communication is performed using a plurality of power line communication devices including a power line communication unit that performs transmission and reception of communication packets via a power line communication path.
  • a power-saving method wherein a transmission-side power line communication device transmits an activation signal using a frequency in a band not used by the power-line communication unit to a power line; and a reception-side power line communication device includes the transmission side Receiving the activation signal transmitted from the power line communication device from the power line, and the receiving power line communication device receiving the activation signal returning from the power saving mode.
  • the invention according to claim 1 is as described above, and the power line communication device on the transmission side includes an activation signal transmission unit that transmits an activation signal using a frequency in a band not used by the power line communication unit to the power line, and the reception side
  • the power line communication device includes a start signal receiving unit that receives the start signal transmitted from the start signal transmitting unit from a power line, and the power line communication unit included in the power line communication device on the receiving side satisfies a predetermined condition.
  • the activation signal receiving unit receives the activation signal, the power saving mode is restored. That is, since the power line communication unit can be set in the power saving mode, power saving can be realized.
  • a power line communication part should just be returned from a power saving mode by transmitting / receiving an activation signal. Moreover, since transmission / reception of the activation signal is performed using the power line, it is not necessary to provide a communication means different from the power line communication for transmission / reception of the activation signal, and power line communication that can minimize capital investment. No loss of merits.
  • the activation signal receiving unit can be composed of a transistor capable of filtering the frequency. That is, since the activation signal can be processed without using a computing device with high power consumption, standby power consumption for receiving the activation signal can be significantly reduced.
  • invention of Claim 2 is as above,
  • the said power line communication part with which the said power line communication apparatus of the receiving side is equipped with is a power saving mode after performing the process based on the communication packet which the said power line communication part received Therefore, when necessary processing is completed, it is possible to quickly enter a standby state, and to effectively save power.
  • the invention according to claim 3 is as described above, and the power line communication unit provided in the power line communication device on the receiving side has elapsed a predetermined time after the reception of the activation signal by the activation signal receiving unit is completed. Even if power line communication does not occur, the power saving mode is set.For example, even if the activation signal receiver malfunctions due to noise on the power line, it will enter a standby state after a certain period of time. Can be achieved.
  • the power line communication device that has received the activation signal performs power line communication
  • the power line communication device that does not perform power line communication is quickly put into a standby state, so that it is possible to effectively save power.
  • the invention of claim 4 is as described above, and a power line communication unit that performs transmission and reception of communication packets via a power line communication path, and activation using a frequency in a band that is not used by the power line communication unit
  • An activation signal receiving unit that receives a signal from a power line, and the power line communication unit enters a power saving mode when a predetermined condition is satisfied, and the activation signal receiving unit receives the activation signal when the activation signal is received. Since returning from the power saving mode, the same effect as that of the first aspect of the invention can be obtained.
  • the invention according to claim 5 is as described above, wherein the transmission-side power line communication apparatus transmits an activation signal using a frequency in a band not used by the power line communication unit to the power line; A power line communication device receiving the activation signal transmitted from the transmission side power line communication device from the power line; and a step of receiving the activation signal from the reception side power line communication device returning from the power saving mode.
  • the power line communication system is configured such that a plurality of power line communication devices 10 are connected via a power line 35, and the power line communication devices 10 can transmit and receive communication packets to each other. .
  • the power line communication device X on the transmission side and the power line communication device Y on the reception side are connected in a one-to-many relationship.
  • This system is applied to centralized management and remote control of home energy management systems, for example. That is, the transmission-side power line communication device X is connected to the operation terminal 31 such as a smartphone, and the reception-side power line communication device Y is connected to the controlled device 32 such as an illumination or an air conditioner. 32 can be managed and controlled. Specifically, the power to the controlled device 32 can be turned on / off as necessary while confirming the power consumption and operating status of the controlled device 32 with the operation terminal 31. According to such an aspect, it is possible to realize power saving by controlling the controlled devices 32 by power line communication and suppressing forgetting to turn off the controlled devices 32 and standby power consumption.
  • the power line communication system can communicate even when a plurality of power line systems are exceeded, and a relay device 20 is provided between different power line systems. Yes.
  • the relay device 20 amplifies communication packets exchanged over the power line system, and the relay device 20 is provided to ensure signal accuracy between different power line systems.
  • there are two power line systems, power line system A and power line system B but the embodiment of the present invention is not limited to two power line systems, and there are three or more power line systems. You may do it. Even in this case, signal accuracy can be ensured by connecting each power line system via the relay device 20.
  • each power line system a plurality of power line communication devices 10 are arranged, and these power line communication devices 10 (reception-side power line communication devices Y) are managed by being divided into a plurality of groups as shown in FIG. Yes.
  • each group is assigned an activation signal having a different frequency, and is configured to return from a standby state when an activation signal assigned to the own group is transmitted.
  • the power line communication device 10 is a device that is connected to the power line 35 by being inserted into a power supply outlet and connected to the external device 30 later by various interfaces.
  • the power line communication device 10 includes a connection unit 11, a control unit 12, a power line communication unit 13, an activation signal transmission unit 14, an activation signal reception unit 15, a power supply control unit 16, and a coupling unit 17. It has.
  • the power line communication device 10 is classified into two types, that is, the transmission side power line communication device X (master unit) and the reception side power line communication device Y (slave unit). As shown in FIG. 3, the power line communication device X on the transmission side and the power line communication device Y on the reception side have basically the same configuration.
  • connection unit 11 includes a connection interface for connecting to the external device 30, and communicates with the external device 30 to transmit a request from the external device 30 to the control unit 12. Or an instruction from the control unit 12 is transmitted to the external device 30.
  • the connection unit 11 is configured to perform signal conversion as necessary so that signals can be exchanged between the control unit 12 and the external device 30.
  • connection unit 11 includes a connection interface corresponding to the external device 30 so as to be compatible with the external device 30 to which each power line communication device 10 is connected.
  • the transmission-side power line communication device X is connected to the operation terminal 31 as an external device 30, and the connection unit 11 of the transmission-side power line communication device X receives an operation instruction from the operation terminal 31. It is configured with a connection interface.
  • the operation terminal 31 various devices such as a dedicated operation panel, a tablet terminal, a smartphone, and a personal computer can be used.
  • the connection unit 11 includes a connection interface that can be connected to the operation terminal 31 by wire or wirelessly.
  • the connection unit 11 includes a connection terminal for the cable. Yes.
  • an interface for connecting to the Internet (connection interface such as Ethernet or wireless LAN) is provided.
  • the power line communication device Y on the reception side is connected to the controlled device 32 as the external device 30, and the connection unit 11 of the power line communication device Y on the reception side transmits a control signal to the controlled device 32.
  • a connection interface is provided.
  • the connection unit 11 includes a connection interface that can be connected to the controlled device 32 by wire or wirelessly. For example, when the controlled device 32 and the power line communication device 10 are connected by a cable, a connection terminal of the cable is provided. I have.
  • Control unit 12 Although not particularly illustrated, the control unit 12 is configured around a CPU, and controls the entire power line communication device 10 by reading a program stored in the ROM.
  • the control unit 12 has a power saving mode, and is configured to suppress power consumption by setting itself to the power saving mode. In the power saving mode, only some minimum functions can be operated, and power consumption is suppressed by deactivating some functions.
  • the power line communication unit 13 is for executing transmission and reception of communication packets via the power line 35. By flowing a high frequency electric signal on the power line 35, the power line communication unit 13 uses this electric signal. Data can be exchanged between 13.
  • the power line communication unit 13 includes an address database 13a that holds an address list of the power line communication device 10, a packet transmission unit 13b that transmits packets by power line communication, and a packet that is transmitted by power line communication. Is provided.
  • the address database 13a is a database that stores an address that is a destination of a communication packet transmitted by the packet transmission unit 13b.
  • the address stored in the address database 13a is assigned to each power line communication device 10, and a communication packet can be exchanged between the intended power line communication devices 10 by referring to this address.
  • the addresses may be different for all the power line communication devices 10, or a plurality of power line communication devices 10 may be grouped and assigned to each group.
  • the packet transmission unit 13 b transmits a communication packet to the power line 35 in accordance with an instruction from the control unit 12.
  • the packet transmission unit 13b refers to the address database 13a, extracts an address assigned to the power line communication device 10 that is the destination of the communication packet, and creates packet data including the extracted address. Then, the created packet data is sent to the power line 35 as a communication packet.
  • the packet receiving unit 13c monitors the communication packet flowing on the power line 35 and filters the address included in the communication packet flowing on the power line 35, thereby filtering and receiving the communication packet addressed to itself. .
  • the control unit 22 receives the communication packet, the control unit 22 refers to the data included in the communication packet, calls a processing routine associated with the data from a plurality of processing routines registered in advance, and performs predetermined processing.
  • the communication packet flowing on the power line 35 is not a communication packet addressed to itself, the communication packet is discarded and not passed to the control unit 22.
  • the power line communication unit 13 configured as described above also includes a power saving mode.
  • the control unit 12 puts the power line communication device 10 into the power saving mode by cutting off the power supply to the power line communication unit 13 before putting itself into the power saving mode. Thereby, in the power saving mode, power line communication is cut off, and standby power consumption accompanying power line communication can be suppressed.
  • the activation signal transmitter 14 is for transmitting an activation signal for returning the counterpart power line communication device 10 that performs power line communication from the power saving mode.
  • the activation signal transmission unit 14 transmits an activation signal using a frequency in a band not used by the power line communication unit 23 to the power line 35 in accordance with a command from the control unit 12.
  • a predetermined frequency is assigned in advance for each group. That is, taking FIG. 1 as an example, a unique frequency is assigned in advance to each of group A1, group A2, group A3, group B1, group B2, and group B3.
  • the power line communication device 10 of each group performs a process of returning from the power saving mode when receiving an activation signal having a frequency assigned to the group. Thereby, since the return from the power saving mode can be executed in a limited form of groups, unnecessary power-on can be suppressed and power saving can be achieved.
  • a table for associating groups and frequencies is stored in a storage device in the power line communication device 10.
  • This table is referred to by the control unit 12 and is used for transmitting an activation signal. That is, the control unit 12 refers to this table, extracts the frequency of the group to which the other party of the power line communication belongs, and instructs the activation signal transmission unit 14 to transmit the activation signal of the frequency.
  • the activation signal transmitter 14 continuously transmits the activation signal at a specified frequency for a predetermined time (for example, about 0.5 sec). By such processing, the other party of the power line communication can return from the power saving mode and prepare for the start of power line communication.
  • the activation signal transmitter 14 may be provided at least in the power line communication device X on the transmission side, and may be omitted in the power line communication device Y on the reception side.
  • the activation signal receiving unit 15 is for receiving the activation signal transmitted from the activation signal transmitting unit 14 from the power line 35.
  • the activation signal receiving unit 15 is composed of, for example, a transistor that filters a specific range of frequencies. That is, it is configured to receive only the activation signal transmitted toward the group to which the user belongs by filtering and receiving only the unique frequency assigned to the group to which the user belongs.
  • the power supply control unit 16 described later is notified of the activation signal reception.
  • the activation signal receiving unit 15 only needs to be provided at least in the power line communication device Y on the reception side, and may be omitted in the power line communication device X on the transmission side.
  • the power supply control unit 16 is for controlling the control unit 12 and the power line communication unit 13 to return from the power saving mode.
  • the power supply control unit 16 returns the control unit 12 and the power line communication unit 13 from the power saving mode and makes a transition to a state where power line communication is possible.
  • control part 12 and the power line communication part 13 which returned from the power saving mode by the power supply control part 16 are formed so as to automatically enter the power saving mode again when a predetermined condition is satisfied.
  • the power line communication unit 13 is configured to automatically enter the power saving mode after executing processing based on the received communication packet.
  • the power saving mode is automatically set even when the power line communication does not occur even after a predetermined time has elapsed since the reception of the activation signal by the activation signal receiving unit 15 is completed.
  • the coupling unit 17 is an interface unit for connecting to the power line 35.
  • the coupling unit 17 includes a plug that can be plugged into a power supply outlet. By inserting the plug into the outlet, the power line communication device 10 is connected to the power line 35 to enable power line communication.
  • the relay device 20 includes a coupling unit 21, a control unit 22, a power line communication unit 23, an activation signal transmission unit 24, an activation signal reception unit 25, and a power supply control unit 26.
  • the coupling unit 21, the power line communication unit 23, the activation signal transmitting unit 24, and the activation signal receiving unit 25 are provided for each power line system.
  • the coupling unit 21 includes a connection interface for connecting to the power line 35, and monitors communication packets and start signals that flow on the power line 35. When the coupling unit 21 detects a communication packet or activation signal transmitted in the connected power line system, the coupling unit 21 or the activation signal is used to amplify and transmit the communication packet or activation signal to the other power line system. Notify the sending unit 24.
  • Control unit 22 Although not particularly illustrated, the control unit 22 is configured around a CPU, and is configured to control the entire relay device 20 by reading a program stored in the ROM.
  • the control unit 22 has a power saving mode, and is configured to suppress power consumption by setting itself to the power saving mode. In the power saving mode, only some minimum functions can be operated, and power consumption is suppressed by deactivating some functions.
  • the power line communication unit 23 transmits a communication packet transmitted in the connected power line system to the other power line system, and transmits a communication packet transmitted in the other power line system to the connected power line system. Is.
  • the communication packet is captured by the coupling unit 21A connected to the power line system A and passed to the power line communication unit 23A connected to the power line system A. It is.
  • the power line communication unit 23A that has received the communication packet amplifies the communication packet, clears it, and passes it to the power line communication unit 23B connected to the power line system B. Then, the power line communication unit 23B that has received the communication packet transmits the communication packet to the power line 35 of the power line system B.
  • the power line communication unit 23 has a power saving mode, and when the power supply is cut off by the control unit 22, the power line communication unit 23 transitions to the power saving mode. In the power saving mode, power line communication is disabled, but standby power consumption associated with power line communication can be suppressed.
  • the start signal transmission unit 24 sends a start signal sent in the connected power line system to the other power line system, and sends a start signal sent in the other power line system to the connected power line system. It is.
  • the activation signal when the activation signal is flowing on the power line 35 of the power line system A, the activation signal is captured by the coupling unit 21A connected to the power line system A and is sent to the activation signal transmission unit 24A connected to the power line system A. Passed.
  • the activation signal transmission unit 24A Upon receiving the activation signal, the activation signal transmission unit 24A amplifies the activation signal, clears it, and passes it to the activation signal transmission unit 24B connected to the power line system B. Then, the activation signal transmission unit 24B that has received the activation signal transmits the activation signal to the power line 35 of the power line system B.
  • the activation signal receiving unit 25 is for receiving an activation signal from the power line 35.
  • the activation signal receiving unit 25 is composed of, for example, a transistor that filters a specific range of frequencies.
  • the activation signal receiving unit 25 filters and receives only the activation signal transmitted from the connected power line system to the group belonging to the other power line system.
  • the activation signal receiving unit 25A connected to the power line system A filters and receives the frequencies assigned to the groups (group B1, group B2, group B3) belonging to the power line system B.
  • the activation signal receiving unit 25B connected to the power line system B filters and receives the frequencies assigned to the groups (group A1, group A2, group A3) belonging to the power line system A.
  • the power supply control unit 26 described later is notified of the activation signal reception.
  • the power supply control unit 26 controls the control unit 22 and the power line communication unit 23 to return from the power saving mode. Specifically, when the activation signal reception is notified from the activation signal receiving unit 25, the control unit 22 and the power line communication unit 23 are returned from the power saving mode, and are changed to a state in which power line communication is possible. Thereby, it will be in the state which can relay a communication packet beyond an electric power grid
  • control unit 22 and the power line communication unit 23 that have been returned from the power saving mode by the power supply control unit 26 are configured to automatically enter the power saving mode again when a predetermined condition is satisfied. Specifically, it is configured to automatically enter the power saving mode when a predetermined time has elapsed after the reception of the activation signal by the activation signal receiving unit 25 is completed.
  • the processing flow of power line communication according to the present embodiment is roughly divided into two processes: (1) processing of the power line communication device X on the transmission side and (2) processing of the power line communication device Y on the reception side. Since these two processes are executed in parallel, each will be described below.
  • a communication request is generated.
  • the communication request can be generated when there is an input from the operation terminal 31, for example. Specifically, when the user operates the operation terminal 31 and instructs the operation of the controlled device 32 or the execution of the status check, a communication request to the power line communication apparatus 10 to which the controlled device 32 is connected is generated. To do.
  • a communication request is also generated when a periodic processing request is described in the interrupt processing using the CPU timer of the control unit 12. For example, when it is desired to periodically check the state of the controlled device 32, the communication processing to the controlled device 32 is described in the interrupt handler, and the power line communication device 10 to which the controlled device 32 is connected is described. Requests for communication occur periodically. Then, the process proceeds to step S101.
  • step S101 when the control unit 12 and the power line communication unit 13 are in the power saving mode, the process returns from the power saving mode.
  • the control unit 12 that has returned from the power saving mode generates a communication packet based on the communication request. Then, the process proceeds to step S102.
  • step S102 an activation signal is transmitted using the activation signal transmitter 14.
  • the control unit 12 instructs the activation signal transmission unit 14 to extract the frequency of the activation signal of the group to which the power line communication device Y that is the transmission destination of the communication packet belongs, and to output the activation signal of the extracted frequency. To do.
  • the activation signal transmission unit 14 continuously transmits an activation signal of the frequency to the power line for 0.5 sec. Then, the process proceeds to step S103.
  • step S103 power line communication is executed immediately after the transmission of the activation signal is completed. Specifically, the control unit 12 instructs the power line communication unit 13 to transmit the communication packet generated in step S101. Receiving the command, the power line communication unit 13 sends the communication packet to the power line. Then, the process proceeds to step S104.
  • step S104 the control unit 12 and the power line communication unit 13 transition to the power saving mode and enter a standby state. And it will be in a standby state until the next communication request occurs.
  • step S200 shown in FIG. 6 the activation signal receiving unit 25 filters and receives the activation signal addressed to itself. Then, the process proceeds to step S201.
  • step S201 when the control unit 12 and the power line communication unit 13 are in the power saving mode, the process returns from the power saving mode. Then, the process proceeds to step S202.
  • step S202 the apparatus waits for a predetermined time until power line communication starts. Specifically, it waits until a predetermined time (for example, 0.1 sec) elapses after the activation signal receiving unit 25 finishes receiving the activation signal (after the activation signal is interrupted). If a communication packet addressed to itself is not transmitted within this time, the process proceeds to step S204, and the control unit 12 and the power line communication unit 13 are switched to the power saving mode. On the other hand, if a communication packet addressed to itself is transmitted within this time, the process proceeds to step S203.
  • a predetermined time for example, 0.1 sec
  • step S203 the content of the communication packet addressed to itself is referred to, and the process associated with this process code is executed based on the process code included in the communication packet. For example, the power of the controlled device 32 is turned on / off, or the state of the controlled device 32 is inspected.
  • step S204 the control unit 12 and the power line communication unit 13 are shifted to the power saving mode, and enter a standby state.
  • the transmission-side power line communication device X includes the activation signal transmission unit 14 that transmits the activation signal using the frequency of the band not used by the power line communication unit 13 to the power line 35.
  • the power line communication device Y on the reception side includes the activation signal reception unit 15 that receives the activation signal transmitted from the activation signal transmission unit 14 from the power line 35, and the power line communication unit 13 included in the power line communication device Y on the reception side. Enters a power saving mode when a predetermined condition is satisfied, and returns from the power saving mode when the activation signal receiving unit 15 receives the activation signal. That is, since the power line communication unit 13 can be set in the power saving mode, power saving can be realized.
  • the power line communication part 13 should just return from a power saving mode by transmitting / receiving an activation signal. Moreover, since transmission / reception of the activation signal is performed using the power line 35, it is not necessary to provide a communication means different from the power line communication for transmission / reception of the activation signal, and the power line can minimize capital investment. No loss of communication merit.
  • the activation signal receiving unit 15 can be composed of a transistor capable of filtering the frequency. That is, since the activation signal can be processed without using a computing device with high power consumption, standby power consumption for receiving the activation signal can be significantly reduced.
  • the power line communication unit 13 included in the power line communication device Y on the receiving side is in the power saving mode after executing the processing based on the communication packet received by the power line communication unit 13, as soon as necessary processing is completed. It is possible to enter a standby state and to effectively save power.
  • the power line communication unit 13 included in the power line communication device Y on the receiving side saves power when no power line communication occurs even after a predetermined time has elapsed after the start signal reception by the start signal receiving unit 15 is completed. Since the mode is set, for example, even when the activation signal receiving unit 15 malfunctions due to noise on the power line or the like, the standby state is entered after a certain period of time, so that power saving can be effectively achieved.
  • the power line communication device Y that has received the activation signal performs power line communication
  • the power line communication device Y that does not perform power line communication quickly enters a standby state, thereby effectively saving power. Can do.
  • the transmission-side power line communication device X and the reception-side power line communication device Y are connected in a one-to-many relationship. Good.
  • the transmission-side power line communication device X and the reception-side power line communication device Y have been described separately. However, when bidirectional communication is performed, it is necessary to conceptually separate them. Instead, one power line communication device 10 may be formed so that it can be the power line communication device X on the transmission side and the power line communication device Y on the reception side.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Power Engineering (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)

Abstract

La présente invention concerne, sans diminuer les avantages d'une communication par ligne électrique, c'est-à-dire la possibilité de conserver un faible niveau d'investissement en installations, afin de parvenir à des économies d'énergie en coupant la communication par ligne électrique en période d'attente, un dispositif de communication par ligne électrique côté transmission (X) muni d'une section d'envoi de signal de démarrage (14) servant à transmettre à une ligne électrique (35) un signal de démarrage utilisant la fréquence d'une bande qui n'est pas utilisée par une section de communication par ligne électrique (13), et un dispositif de communication par ligne électrique côté réception (Y) muni d'une section de réception de signal de démarrage (15) servant à recevoir d'une ligne électrique (35) un signal de démarrage transmis par la section d'envoi de signal de démarrage (14). La section de communication par ligne électrique (13) qui équipe le dispositif de communication par ligne électrique côté réception (Y) passe dans un état d'économie d'énergie lorsque des conditions particulières sont remplies, et sort de l'état d'économie d'énergie une fois que la section de réception de signal de démarrage (15) a reçu le signal de démarrage.
PCT/JP2013/051476 2013-01-24 2013-01-24 Système d'économie d'énergie dans une communication par ligne électrique, dispositif de communication par ligne électrique et procédé d'économie d'énergie WO2014115286A1 (fr)

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Publication number Priority date Publication date Assignee Title
JP2017046052A (ja) * 2015-08-24 2017-03-02 株式会社日本自動車部品総合研究所 中継装置
WO2018220290A1 (fr) * 2017-05-31 2018-12-06 Orange Dispositif et programme de routage des signaux cpl

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JP2007259176A (ja) * 2006-03-24 2007-10-04 Sumitomo Electric Ind Ltd 電力線通信装置、電力線通信ネットワークシステム、及び電力線通信方法
JP2007259175A (ja) * 2006-03-24 2007-10-04 Sumitomo Electric Ind Ltd 電力線通信ネットワークシステム、電力線通信装置、及び電力線通信方法
JP2008167217A (ja) * 2006-12-28 2008-07-17 Softbank Bb Corp 電力線通信装置及びその通信制御方法
WO2010100951A1 (fr) * 2009-03-06 2010-09-10 パナソニック株式会社 Alimentation électrique
JP2012028864A (ja) * 2010-07-20 2012-02-09 Denso Corp 通信システムおよびノード

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JP2007259176A (ja) * 2006-03-24 2007-10-04 Sumitomo Electric Ind Ltd 電力線通信装置、電力線通信ネットワークシステム、及び電力線通信方法
JP2007259175A (ja) * 2006-03-24 2007-10-04 Sumitomo Electric Ind Ltd 電力線通信ネットワークシステム、電力線通信装置、及び電力線通信方法
JP2008167217A (ja) * 2006-12-28 2008-07-17 Softbank Bb Corp 電力線通信装置及びその通信制御方法
WO2010100951A1 (fr) * 2009-03-06 2010-09-10 パナソニック株式会社 Alimentation électrique
JP2012028864A (ja) * 2010-07-20 2012-02-09 Denso Corp 通信システムおよびノード

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017046052A (ja) * 2015-08-24 2017-03-02 株式会社日本自動車部品総合研究所 中継装置
WO2018220290A1 (fr) * 2017-05-31 2018-12-06 Orange Dispositif et programme de routage des signaux cpl
FR3067188A1 (fr) * 2017-05-31 2018-12-07 Orange Dispositif et programme de routage des signaux cpl

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