JP4100248B2 - Power line communication wiring equipment - Google Patents

Power line communication wiring equipment Download PDF

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Publication number
JP4100248B2
JP4100248B2 JP2003137732A JP2003137732A JP4100248B2 JP 4100248 B2 JP4100248 B2 JP 4100248B2 JP 2003137732 A JP2003137732 A JP 2003137732A JP 2003137732 A JP2003137732 A JP 2003137732A JP 4100248 B2 JP4100248 B2 JP 4100248B2
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Japan
Prior art keywords
power line
line communication
power
communication
connected
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
JP2003137732A
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Japanese (ja)
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JP2004056766A (en
Inventor
賢治 國吉
心司 山本
幸夫 岡田
孝憲 島岡
美行 薦田
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松下電工株式会社
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Application filed by 松下電工株式会社 filed Critical 松下電工株式会社
Priority to JP2003137732A priority patent/JP4100248B2/en
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Application granted granted Critical
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Application status is Expired - Fee Related legal-status Critical
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Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a power line communication wiring device that enables power supply and transmission / reception of a data signal using an indoor power line used in a general office or a house.
[0002]
[Prior art]
In general, in an office, a flat cable that can eliminate the exposed wiring on the floor or a detachable cable using a VVF cable is used as an under carpet wiring as a wiring process of a power line for supplying power. In ordinary houses, power lines are routed around indoor walls as a wiring process for supplying power and supplied from a power outlet. When data communication is performed, a communication cable wired separately from these power supply power lines is used. A HUB and a router for distributing data signals are also installed.
[0003]
On the other hand, there is provided a power line communication outlet that simultaneously supplies power and conveys a data signal to facilitate the construction of a wiring system (for example, Patent Document 1).
[0004]
[Patent Document 1]
Japanese Patent Laid-Open No. 2003-60533
[Problems to be solved by the invention]
In the case of the former conventional example, since the communication cable for the information communication system needs to be wired separately from the power line for the power system, the wiring construction cost is high. Further, when adding a load connected to the communication line for information communication system or changing the layout, it is necessary to newly lay the wiring system.
[0006]
In the case of the latter conventional example, when a plurality of electric devices including a personal computer are connected to each power line communication outlet, the input impedance on the outlet side with respect to the communication frequency viewed from the electric circuit is lowered, and the power line communication In some cases, the modem could not receive information signals.
[0007]
The present invention has been made in view of the above-described points, and an object of the present invention is to perform power line communication using a power line only by connecting a communication terminal used for power line communication, and includes a communication terminal. We can supply power to electrical equipment without the impedance of these communication terminals and electrical equipment affecting power communications, and we also provide wiring equipment for power line communications that can reduce wiring construction costs because there is no need for wiring on the communication path. There is to do.
[0008]
[Means for Solving the Problems]
In order to achieve the above-described object, a power line communication wiring device according to claim 1 of the present invention has a predetermined input impedance characteristic used at least for power line communication at an input end connected to an electric path in a device body connected to the power line. A power line communication and a function of receiving and demodulating a power line communication signal taken in through the power line and the power line in the appliance body, and an impedance upper which is high with respect to the frequency band of the power supply and low with respect to the commercial power supply frequency A power line communication modem that modulates a data signal from a terminal into a power line communication signal and sends it onto an electric circuit in the instrument body, and an electric circuit in the instrument body and an electric circuit side connection end of the power line communication modem. An electric machine in a state where a power source connection end is connected to an electric path in the instrument body via the impedance upper and a coupler that cuts off a commercial power source frequency. A first outlet portion serving as a power source supply to the at least Bei example and an interface unit for performing mediating exchange of bidirectional data signals between the communication terminal and the power line communication modem, said first The power connection end of the outlet is switched and connected between the output end of the impedance upper and the electric path in the instrument body by a changeover switch.
[0009]
The wiring device for power line communication having such a configuration can perform power line communication by the communication terminal by connecting the communication terminal used for power line communication to the interface unit, and also supplies power to the communication terminal and the electric device via the impedance upper. The power outlet can be connected to the electrical circuit, enabling stable power line communication without the influence of the impedance of these communication terminals and electrical equipment at the same time as supplying power to the communication terminals and electrical equipment. Since it also serves as a wire, there is no need for a dedicated communication cable and the cost of wiring can be reduced. In addition, it is possible to use one outlet section separately for the case where power line communication is performed using the AC adapter with built-in power line communication modem and for the case where power is supplied to the electrical equipment.
[0010]
A power line communication wiring device according to claim 2 of the present invention is the power line communication wiring device according to claim 1, wherein the second outlet portion has a power connection end directly connected to the electric circuit in the device body. It has.
[0011]
When the power line communication wiring device having such a configuration uses the AC adapter with built-in power line communication modem, the power line communication and the power supply to the communication terminal can be simultaneously performed without being affected by the impedance upper. .
[0014]
The power line communication wiring device according to claim 3 of the present invention is the power line communication wiring device according to claim 1, wherein the impedance upper is higher than the predetermined communication frequency band and The input impedance is low with respect to another communication frequency band set in a frequency band that does not affect
[0015]
When the power line communication wiring device having such a configuration performs power line communication using a high frequency band that does not affect home electric appliances, the power line communication corresponding to the power line communication is provided to the first outlet unit. It is possible to connect an AC adapter with built-in modem, and even when power line communication is performed in a predetermined frequency band, the first outlet unit is used for supplying power to the electrical equipment without affecting the power line communication. be able to.
[0016]
According to a fourth aspect of the present invention, there is provided a power line communication wiring device for directly connecting an electric path in the device main body to a floor cable of an under carpet wiring system laid for a power line.
[0017]
The power line communication wiring device having such a configuration can use the floor cable of the undercarpet wiring system for power line communication.
[0018]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below.
( Basic configuration )
FIG. 1 shows the configuration of a power line communication wiring device 1 having a basic configuration. The power line wiring device 1 of this example is a power plug provided at the tip of a power cord 2 led out from a device body (not shown). 3 is connected to a power outlet 100 provided in a power line 10 that is wired indoors to perform power line communication and power supply, so that an internal electric circuit can be connected to a power line that also serves as a communication cable for an information communication system. It has become.
[0019]
Then, in the instrument body, as shown in FIG. 2, an electric circuit in the instrument body is connected via an impedance upper 5 having a high input impedance Z characteristic with respect to a signal frequency band (for example, 10 kHz to 450 kHz) X or more used for power line communication. A power supply dedicated modem (hereinafter referred to as “PLC <Power Line Communication> modem”) connected to the first power outlet 4B dedicated to the power supply connected to the power source and the power circuit in the appliance main body connected to the power cord 2 The second outlet section 4A provided for the adapter, the PLC modem 6, and a high-pass filter function for cutting off the commercial power supply frequency (50/60 Hz), the circuit connection end side of the PLC modem 6 and the internal circuit A coupler 7 interposed between them, a hub 8 connected to the communication terminal side connection end of the PLC modem 6, and the impedance adapter. Power supply circuit 9 that receives power supply from the power path between power supply 5 and outlet unit 4B and supplies operating power to PLC modem 6 and hub 8 is incorporated, and each outlet 4a,. The power line communication wiring device 1 is configured by exposing the insertion port of... And the insertion port of the connector 8a such as a modular connector of the hub 8 to the surface of the device body.
[0020]
The PLC modem 6 receives a power line communication signal in a predetermined format, which is transmitted by being superimposed on the power line using the communication frequency band (10 kHz to 450 kHz), via the coupler 7 and receives a data signal from the received signal. A modulation / demodulation circuit 60 having a demodulation function for demodulating and a modulation function for modulating transmission data on the communication terminal 11 side and sending it to the electric circuit side via the coupler 7 as a power line communication signal of a predetermined format, and a predetermined data signal for the demodulated data signal A control circuit 61 that performs processing for sending out to the hub 8 by a protocol corresponding to a network interface (for example, Ethernet (registered trademark)) and processing for passing a data signal sent by the protocol through the hub 8 to the modem circuit 60; And a buffer 62 as a memory for temporarily storing data processed by the control circuit 61.
[0021]
The hub 8 corresponds to the Ethernet (registered trademark), and constitutes an interface unit that exchanges data signals between the communication terminal 11 and the PLC modem 6 and branches.
[0022]
Thus, when the power plug 3 is connected to the outlet unit 100 connected to the power line 10 used for power line communication, the power line 10 and the electric circuit in the main body of the power line communication wiring device 1 of this example are connected. The PLC modem 6 and the hub 8 in the main body start operating upon receiving operation power from the power supply circuit 9.
[0023]
Thus, if a plug 12a such as a modular plug at the tip of the communication cable 12 from the communication terminal 11 such as a personal computer is connected to the connector 8a of the hub 8, the communication terminal 11 is compatible with the power line communication connected to the power line 10. Data signals using power line communication can be exchanged between other communication terminals and servers. At this time, the power of the communication terminal 11 is supplied by connecting the power plug of the communication terminal 11 to the outlet 4b of the outlet section 4B.
[0024]
Here the outlet 4b ... outlet portion 4B, by connecting the power plug 14 of the electrical device 13, including the communication terminal 11 and home electric appliances, the commercial power supply of power from the power line 10 to the electrical device 13 It will be supplied via the power line communication wiring device 1 of the example . In this case, even if the electrical device 13 is connected to each of the outlets 4b of the outlet unit 4B and the combined impedance is low with respect to the communication frequency band used for power line communication, it is inserted into the electrical circuit in the previous stage of the outlet unit 4B. The impedance upper 5 that is used maintains the impedance of the electric circuit in the instrument main body at a high impedance, so that stable power communication can be performed without affecting the power line communication.
[0025]
On the other hand, since no impedance upper is provided in the front stage of the outlet portion 4A, when the power plug 14 of the general electric device 13 is connected to the outlet 4a constituting the outlet portion 4A as described above, a plurality of electric devices 13 are connected. The combined impedance becomes lower with respect to the communication frequency, and thus the power line communication signal may be attenuated.
[0026]
Therefore, the outlet unit 4A in this example is used as a dedicated outlet unit for connecting the power line communication system simultaneously with the power supply of the communication terminal 16 using the PLC adapter built-in AC adapter 15.
[0027]
The PLC modem built-in AC adapter 15 is a coupler comprising a power supply circuit (not shown) for converting a commercial power supply voltage to a DC power supply voltage corresponding to the communication terminal 16, and a high-pass filter for cutting off the commercial power supply frequency (50/60 Hz). And a PLC modem (not shown) connected to the electric circuit via the power supply, and the output of the power circuit is connected to the power terminal of the communication terminal 16 through the power cable 17 to supply power to the information communication terminal 1 To do. On the other hand, the PLC modem is provided with a communication interface (not shown) of a predetermined format. This communication interface is connected to a communication terminal of the communication terminal 16 via the communication cable 18 to transmit data signals transmitted and received by power line communication to the communication terminal 16. Can be exchanged with.
[0028]
As described above, in the power line communication wiring device 1 of the present example , the outlet unit 4B connected to the electric circuit in the device main body via the impedance upper 5 is used to supply power to the general electric device 13; This prevents the impedance of the electric device 13 from affecting the power line communication, and also includes the outlet unit 4B that is directly connected to the electric circuit, so that the operation of the communication terminal 16 can be performed using the AC adapter 15 with a built-in PLC modem. It is possible to perform power line communication simultaneously with power supply.
[0029]
( Embodiment 1 )
In the basic configuration , the outlet unit 4B for connecting a general electric device 13 and the outlet unit for connection 4A of the AC adapter 15 with a built-in PLC modem 15 are provided. However, in the present embodiment, as shown in FIG. By using one outlet section 4 and a two-pole changeover switch SW and switching the changeover switch SW to the contact a side, the state directly connected to the electric circuit in the appliance main body without passing through the impedance upper 5 is also obtained. By switching to the side, it is possible to set the state in which the outlet portion 4 is connected to the electric circuit in the instrument body via the impedance upper 5. That is, in the former state, the outlet portion 4 functions as an outlet portion for connecting the PLC modem built-in AC adapter 15 similarly to the basic portion of the outlet portion 4A, and in the latter state, the general electric device 13 is connected in the same manner as the outlet portion 4B. Therefore, the number of outlets can be reduced and the power line communication wiring device 1 can be downsized by switching according to the use state of the user.
[0030]
In the figure, 4c is an outlet constituting the outlet section 4. Further, since the other components are the same as the basic configuration , the same components are denoted by the same reference numerals, and descriptions of functions and operations are omitted.
( Embodiment 2 )
This embodiment is provided with a single outlet portion 4 as in the first embodiment . However, as shown in FIG. 4, the outlet portion 4 is connected to an electric circuit in the instrument body via an impedance upper 5 ′. It is what. As shown in FIG. 5, the impedance upper 5 ′ used in the present embodiment exhibits at least a high input impedance characteristic with respect to the above-described signal frequency band (10 kHz to 450 kHz) X, and further affects household electric appliances. In a high frequency band (for example, 2 MHz to 30 MHz) Y used as a high-speed power line communication that is not given, it is composed of a band-pass filter exhibiting a low input impedance characteristic.
[0031]
That is, when power line communication using the low frequency band X is performed, the outlet unit 4 is used as an outlet unit for supplying electric power to a general electric device 13. In this case, the power line communication signal from the electric circuit side is blocked by the impedance upper 5 and cannot be received even when the low frequency band-use PLC modem built-in AC adapter 15 is connected.
[0032]
On the other hand, when the frequency in the high-speed frequency band Y is used for power line carrier, the power line communication signal superimposed on the electric circuit can pass through the impedance upper 5 ′, so that the PLC modem corresponding to the high-speed frequency band Y By connecting the built-in AC adapter 15 ′ to the outlet section 4, power line communication using the communication terminal 16 can be performed, and power can be supplied to the communication terminal 16 at the same time.
[0033]
Therefore, when performing power line communication using the low frequency band X, the outlet unit 4 functions as an outlet unit for supplying power to the electrical device 13 and performs power line communication using the high frequency band Y. In this case, it functions as an outlet unit that enables the power line communication by the communication terminal 16 by connecting a corresponding PLC modem built-in AC adapter 15 ′.
[0034]
( Embodiment 3 )
The power line communication wiring device 1 according to the first embodiment and the second embodiment has a table-tap configuration that can be freely carried. However, in this embodiment, a flat cable FC of a general office is used as shown in FIG. An outlet unit 4 corresponding to the used undercarpet wiring system and directly connected to a flat cable FC laid directly under the tile carpet 20 and having four outlets 4c as shown in FIG. The PLC modem 6, the coupler 7, the power supply circuit 9, the hub 8, and the impedance upper 5 are built in the appliance main body 1A, and a directly attached fixture 21 for connecting the flat cable FC and the electric circuit in the appliance main body 1A is provided. I have.
[0035]
As the impedance upper 5 used in the present embodiment, when the frequency used for power line communication is a low frequency band (10 kHz to 450 kHz), the one having the characteristics shown in FIG. When using 30 MHz ), the one having the characteristics shown in FIG. 5 is used. Therefore, in the former case, the outlet unit 4 is used as an outlet unit for supplying power to the communication terminal 11 and the electric device 13 in the same manner as the outlet unit 4B having the basic configuration , and in the latter case, the outlet unit 4 of the second embodiment. Used in the same way.
[0036]
In addition, the same code | symbol is attached | subjected to the same component as a basic structure by other components.
[0037]
Thus, when power line communication is performed using the communication terminal 11, a modular jack (not shown) provided at the tip of the communication cable 12 of the communication terminal 11 is connected to the hub 8 of the power line communication wiring device 1 of the present embodiment. If a power plug (not shown) provided at the tip of the power cable 19 of the communication terminal 11 is connected to the outlet 4c of the outlet section 4, data communication by the communication function of the communication terminal 11 is possible. The power line communication using the power line including the flat cable FC as a communication path can be performed via the hub 8 and the PLC modem 6.
[0038]
Therefore, it is possible to exchange data only with the power line without separately laying the power line and the dedicated line for communication, and the cost for laying the power line and the dedicated line can be greatly reduced.
[0039]
In addition, power lines and communication lines are not mixed, a simple system can be constructed, and in places where the power line communication wiring device 1 is laid, it is possible to send and receive data in addition to supplying power. And layout can be changed easily.
[0040]
Furthermore, since the impedance upper 5 is provided in front of the outlet 4 part, even if a general electrical device 13 having a low impedance or a power plug (not shown) of the communication terminal 11 is connected to the outlet part 4, the power line is conveyed. Will not be affected. Since the power line communication wiring device 1 is directly connected to the floor cable, each electrical device 13 always passes through the impedance upper 5 of the power line communication wiring device 1 and can perform highly safe communication.
[0041]
( Embodiment 4 )
Since the basic configuration in the present embodiment is the same as that in the third embodiment , common portions are denoted by the same reference numerals, description thereof is omitted, and only the portions that are characteristic of the present embodiment will be described in detail.
[0042]
In other words, this embodiment is not an undercarpet wiring system in which the flat cable FC is directly laid under the tile carpet 20 as in the third embodiment, but a free access floor type undercarpet wiring system as shown in FIG. Thus, the power line communication wiring device 1 is attached to a detachable branch wiring system using a VVF cable.
[0043]
In this branch wiring system, a power line is composed of a main line 31 of a power line extending from a distribution board 30 and a branch line 33 extending from the main line 31 via a joint box 32 previously attached to the main line 31 at a predetermined interval. Yes. The branch line 33 can be easily attached to and detached from the joint box 32 by a connector.
[0044]
The power line communication wiring device 1 of this embodiment is directly attached to the main line 31 in a place where the layout is not changed, and is attached to and detached from the joint box 32 via a branch line 33 in a place where the layout may be changed. It is attached as possible.
[0045]
In such a power line communication wiring device 1, even if the layout of the communication terminal 11 such as a personal computer is changed, it is only necessary to remove the branch line 33 from the joint box 32 and attach it to another joint box 32. Is possible.
[0046]
It should be noted that the present invention is not limited to the above-described embodiments, and it is obvious that each embodiment can be appropriately changed within the scope of the technical idea of the present invention. For example, data between the communication terminal 11 and the PLC modem 6 The exchange is performed using a protocol corresponding to a network interface such as Ethernet (registered trademark), but may be performed based on a predetermined communication standard such as USB or IEEE1394.
[0047]
【The invention's effect】
As described above, the power line communication wiring device according to the present invention can perform power line communication using a power line simply by connecting a communication terminal used for power line communication, and also supply power to electrical equipment including the communication terminal. The impedance of the communication terminal and the electric device can be performed without affecting the power communication, and the wiring construction cost can be reduced because the wiring of the communication path is unnecessary. In addition, it is possible to use one outlet section separately for the case where power line communication is performed using the AC adapter with built-in power line communication modem and for the case where power is supplied to the electrical equipment.
[Brief description of the drawings]
FIG. 1 is a circuit configuration diagram showing a power line communication wiring device of a basic configuration .
FIG. 2 is an impedance characteristic diagram of an impedance upper of a basic configuration .
FIG. 3 is a circuit configuration diagram showing the power line communication wiring device of the first embodiment .
FIG. 4 is a circuit configuration diagram showing a power line communication wiring device according to a second embodiment .
FIG. 5 is an impedance characteristic diagram of the impedance upper of the second embodiment .
FIG. 6 is an explanatory diagram showing the third embodiment, and shows a state in which the power line communication wiring device is attached to the undercarpet wiring system.
FIG. 7 is a circuit configuration diagram showing a power line communication wiring device according to a third embodiment .
FIG. 8 is an explanatory diagram showing the fourth embodiment, and shows a state in which the power line communication wiring device is attached to the undercarpet wiring system.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Power line communication wiring apparatus 2 Power cord 3 Power plug 4A, AB Outlet part 4a, 4b Outlet 5 Impedance upper 6 PLC modem 7 Coupler 8 Hub 9 Power supply circuit 10 Power line 11, 16 Communication terminal 15 PLC adapter built-in AC adapter 100 Outlet part

Claims (4)

  1. An impedance upper at the input end connected to the power line in the instrument body connected to the power line is high for at least a predetermined frequency band used for power line communication and low for commercial power frequency, and
    A function of receiving and demodulating a power line communication signal taken in via the power line and the electric path in the appliance body and a data signal from a communication terminal that performs power line communication are modulated into a power line communication signal and transmitted onto the electric path in the appliance body A power line communication modem;
    A coupler that is interposed between the electric circuit in the appliance body and the electric circuit side connection end of the power line communication modem, and cuts off a commercial power frequency;
    A first outlet portion for supplying power to an electrical device in a state in which a power connection end is connected to the electrical path in the instrument body through the impedance upper;
    At least Bei example and an interface unit for performing mediating exchange of bidirectional data signals between the communication terminal and the power line communication modem,
    The power line communication wiring device , wherein the power connection end of the first outlet is switched and connected between the output end of the impedance upper and the electric path in the device body by a changeover switch .
  2. The power line communication wiring device according to claim 1, further comprising a second outlet portion in which a power connection end is directly connected to an electric path in the device main body.
  3. The impedance upper has a characteristic that the input impedance is low with respect to another communication frequency band set in a frequency band that is higher than the predetermined communication frequency band and does not affect home electric appliances. The wiring apparatus for power line communication according to claim 1.
  4. Wherein the circuit of the instrument main body, according to claim 1 to the power line communication wiring fixtures according to any one of claims 3, characterized in that directly connected to the floor cables under carpets wiring system is laid for the power line.
JP2003137732A 2002-05-28 2003-05-15 Power line communication wiring equipment Expired - Fee Related JP4100248B2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2002153209 2002-05-28
JP2003137732A JP4100248B2 (en) 2002-05-28 2003-05-15 Power line communication wiring equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2003137732A JP4100248B2 (en) 2002-05-28 2003-05-15 Power line communication wiring equipment

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JP4100248B2 true JP4100248B2 (en) 2008-06-11

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KR100589288B1 (en) 2005-01-18 2006-06-07 한국전기연구원 Apparatus for reducing standby-power in power line communication modem
JP2006319664A (en) * 2005-05-12 2006-11-24 Matsushita Electric Works Ltd Wiring accessory for power line communication
JP4954512B2 (en) * 2005-08-26 2012-06-20 パナソニック株式会社 Power distribution board
JP2007088638A (en) * 2005-09-20 2007-04-05 Toshiba Lighting & Technology Corp Wiring device
JP4767638B2 (en) * 2005-09-21 2011-09-07 パナソニック株式会社 Filter device
JP4708145B2 (en) 2005-10-05 2011-06-22 パナソニック株式会社 Power line communication device
WO2007046438A1 (en) * 2005-10-19 2007-04-26 Matsushita Electric Industrial Co., Ltd. Power outlet device
JP4712521B2 (en) * 2005-10-26 2011-06-29 パナソニック株式会社 Termination device
JP2007142852A (en) * 2005-11-18 2007-06-07 Matsushita Electric Ind Co Ltd Adapter
JP2007221358A (en) * 2006-02-15 2007-08-30 Matsushita Electric Ind Co Ltd Cable connector for power line communication
ES2302607B1 (en) * 2006-03-23 2009-05-20 Diseño De Sistemas En Silicio S.A. Communications device through the electrical network with auxiliary output of filtered power.
JP4682909B2 (en) * 2006-04-25 2011-05-11 パナソニック電工株式会社 Power line carrier communication equipment
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JP2008084586A (en) * 2006-09-26 2008-04-10 Matsushita Electric Works Ltd Ceiling-hung type information outlet
JP4642740B2 (en) * 2006-12-11 2011-03-02 シャープ株式会社 Filter control circuit, power strip, power outlet, power extension cable, and filter control method
JP4752775B2 (en) * 2007-01-26 2011-08-17 パナソニック電工株式会社 Power line carrier communication system
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JP5113480B2 (en) * 2007-10-16 2013-01-09 パナソニック株式会社 Duct-mounted PLC plug and its parent-child setting method
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