JP2009004928A - Electrical distribution panel, plc home network and data separation method used therefor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an electrical distribution panel preventing data leakage and securing a stable communication speed. <P>SOLUTION: In the PLC home network utilizing existing power supply wiring wired inside a building as the communication line of electric signals, the electrical distribution panel 1 for distributing and supplying power to the power supply wiring is provided with a control means (data path control circuit 11) for not passing the electric signals to the power supply wiring without the need for network connection. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a distribution board, a PLC home network, and a data separation method used therefor, and more particularly, to a distribution board used in a PLC (Power Line Communications) home network.

  The PLC home network is a network that uses an existing power line (electric light line) wired inside a building as a communication line (see, for example, Patent Document 1). A typical example of this PLC home network will be described with reference to FIG.

  In FIG. 7, in the PLC home network, an electric signal (data) input through a broadband line 101 such as an optical fiber network laid outdoors is accommodated in a PLC modem (base unit) 6 installed indoors. The PLC modem (base unit) 6 superimposes an electric signal (data) on the power line (AC 100 V) 102 and passes it to the indoor distribution board 7. The distribution board 7 distributes and supplies power to the indoor outlets 21 to 27 and the outdoor outlet 3.

  The power supply and electrical signal (data) distributed by the distribution board 7 are terminated by the PLC modem (slave unit) 41, and the electrical signal (data) is transmitted from the PLC modem (slave unit) 41 to the network terminal 51.

Japanese Patent Laying-Open No. 2006-115481 (paragraphs “0002” and “0003”)

  However, in the PLC home network related to the present invention, since the electrical signal (data) is superimposed on all the distributed power sources, the electrical signal (data) is also superimposed on the power source that does not require network connection. Therefore, there is a problem that there is a possibility of communication speed degradation due to noise generation due to reflection to a power supply that requires network connection.

  Further, in the PLC home network related to the present invention, since an electric signal (data) is also superimposed on a power supply that does not require a network connection, there is a problem that communication speed may be deteriorated due to interference between power supply wirings. .

  Furthermore, in the PLC home network related to the present invention, there is a problem that there is a risk of data leakage because an electric signal (data) is also superimposed on a power source that does not require network connection.

  That is, in the PLC home network related to the present invention, electric signals (data) flow in addition to the network-connected power source, which may cause a communication speed deterioration due to data leakage or noise generation due to reflection. is there.

  Accordingly, an object of the present invention is to provide a distribution board, a PLC home network, and a data separation method used for them, which can solve the above problems, prevent data leakage, and ensure a stable communication speed. There is to do.

The distribution board according to the present invention distributes and supplies power to the power wiring in a PLC (Power Line Communications) home network that uses existing power wiring wired inside the building as a communication line for electrical signals. An electrical panel,
Control means for preventing the electrical signal from passing through the power supply wiring that does not require network connection is provided.

  A PLC home network according to the present invention includes the above distribution board.

The data separation method according to the present invention distributes and supplies power to the power wiring in a PLC (Power Line Communications) home network that uses an existing power wiring wired inside a building as a communication line for electrical signals. A data separation method used for electrical boards,
In the distribution board, the control means prevents the electric signal from passing through power supply wiring that does not require network connection.

  By adopting the configuration and operation as described above, the present invention can prevent data leakage and obtain an effect of ensuring a stable communication speed.

  Next, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a block diagram showing the configuration of a distribution board according to the first embodiment of the present invention. In FIG. 1, the distribution board 1 includes a data path (Path) control circuit 11, a man-machine interface 12, a power distribution circuit unit 13, and a distribution board circuit unit 14.

  The distribution board 1 includes indoor outlets 21 and 24 to which network terminals 51 and 52 are connected via PLC (Power Line Communications) modems (slave units) 41 and 42, and other indoor outlets 22 and 23 and the outdoor outlet 3. The man-machine interface 12 is a button, a control panel, or the like that is used when the user makes settings or the like.

  The PLC home network according to the first embodiment of the present invention is the same as the PLC home network 100 related to the present invention shown in FIG. 7 except that the distribution board 1 having the above-described configuration is provided instead of the distribution board 7. It becomes the composition of.

  FIG. 2 is a block diagram showing a configuration example of the data path control circuit 11 of FIG. In FIG. 2, the data path control circuit 11 includes a control unit 111, a memory unit 112, switches 121 to 125, and LPFs (Low Path Filters) 131 to 135.

  The LPFs 131 to 135 are filters that do not pass 100 Hz or more (pass less than 100 Hz). The switches 121 to 125 are switches capable of signal control for selecting a power supply path. The control unit 111 reads the set information and performs OFF / ON control of the switches 121 to 125. The memory unit 112 stores setting information.

  FIG. 3 is a block diagram showing a connection example of the switch 121 and the LPF 131 of FIG. In FIG. 3, the terminal SW <b> 1 of the switch 121 is connected to the power distribution circuit unit 13 and serves as a base point portion (common point) of the switch 121. The terminal SW2 is connected to a connection path that does not pass through the LPF 131, and is connected to the terminal SW1 inside the switch 121 when “0” is input to the terminal SW4.

  The terminal SW3 is connected to a connection path passing through the LPF 131, and is connected to the terminal SW1 and the switch 121 when “1” is input to the terminal SW4. The terminal SW4 is connected to the control unit 111, and is a terminal that controls connection inside the switch 121.

  1 to 3, the distribution board circuit unit 14 and the power distribution circuit unit 13 are well known to those skilled in the art and are not directly related to the present invention, so that the detailed description of the configuration is omitted. To do. In this embodiment, the man-machine interface 12 may be replaced with an interface that can be connected to a PC (Personal Computer) or the like.

  FIG. 4 is a flowchart showing the operation of the data path control circuit 11 of FIG. The data path control in the distribution board 1 according to the first embodiment of the present invention will be described with reference to FIGS. 4 is realized by the control unit 111 of the data path control circuit 11 executing a program stored in the memory unit 112.

  First, the control unit 111 reads setting information stored in advance in the memory unit 112 (step S1 in FIG. 4). The setting information stored in the memory unit 112 indicates data path control information set by the user using the man-machine interface 12. The control unit 111 determines whether to pass data or block based on the setting information read from the memory unit 112 (step S2 in FIG. 4).

  When the control unit 111 determines that data is to be passed, the control signal = "0" is input to the switches 121 to 125 to the terminals SW4 of the switches 121 to 125 (step S3 in FIG. 4), and the control signals are output from the switches 121 to 125. = In response to “0”, the terminals SW1 and SW2 are connected to pass the data as they are through the power supply wiring (step S4 in FIG. 4).

  On the other hand, when the control unit 111 determines that data is not passed, the control signal = "1" is input to the switches 121 to 125 to the terminals SW4 of the switches 121 to 125 (step S5 in FIG. 4), and the switches 121 to 125 are input. In response to the control signal = “1”, the terminals SW1 and SW3 are connected to block the data by the LPFs 131 to 135 (step S6 in FIG. 4). At this time, the switches 121 to 125 cut off the data, but let the AC power supply pass.

  The control unit 111 executes the same operation as described above for the switches 121 to 125 for each power source distributed by the power source distribution circuit unit 13 and distributes the power source for passing data and the power source for shutting off the data.

  Thus, in the present embodiment, data leakage can be prevented by controlling data inside the distribution board 1 and not passing data to the power supply to which the network terminals 51 and 52 are not connected.

  Further, in this embodiment, interference (noise, reflection, etc.) with respect to the network connection power supply wiring can be reduced by preventing data from passing through the power supply wiring that does not require network connection.

  FIG. 5 is a block diagram showing a configuration example of a distribution board according to the second embodiment of the present invention. 5, the distribution board 1a according to the second embodiment of the present invention is the same as that shown in FIG. 1 except that a data processing circuit unit 15 is provided in place of the data path control circuit 11 and the power distribution circuit unit 13. The PLC home network according to the second embodiment of the present invention has the same configuration as that of the distribution board 1 according to the first embodiment of the present invention. 7 is the same as the PLC home network 100 related to the present invention shown in FIG. 7 except that the distribution board 1a having the above-described configuration is provided.

  The basic configuration of the second embodiment of the present invention is the same as that of the first embodiment of the present invention described above, but the method of the first embodiment of the present invention is described as the method for controlling the data path to the power supply. Is further devised.

  FIG. 6 is a block diagram showing a configuration example of the data processing circuit unit 15 of FIG. In FIG. 6, the data processing circuit unit 15 includes filter units 151, 171 to 175, an A / D (analog / digital) conversion processing circuit unit 152, a data processing / control circuit unit 153, a memory unit 154, and a D / A (digital / analog) conversion processing circuit sections 161 to 165.

  The data processing circuit unit 15 serves to supply the electric signal (data) input from the distribution board circuit unit 14 to a power source belonging to the PLC home network based on preset information.

  The A / D conversion processing circuit unit 152 converts the electrical signal (data) from an analog signal to a digital signal, and transmits the converted electrical signal (data) to the data processing / control circuit unit 152.

  The data processing / control circuit unit 153 plays a role of reading the received electrical signal (data) from the memory unit 154 as information set in advance by the man-machine interface 12 and transmitting the information to a power source belonging to the PLC home network.

  The electrical signal (data) transmitted from the data processing / control circuit unit 153 is converted from a digital signal to an analog signal by the D / A conversion processing circuit units 161 to 165, superimposed on the power supply, and transmitted to the PLC home network. .

  The filter unit 151 passes 100 Hz or more to the data processing / control circuit unit 153 side, and passes less than 100 Hz to the AC 100V side. The filter units 171 to 175 input 100 Hz or more from the data processing / control circuit unit 153 side. At the same time, less than 100 Hz from the AC 100V side is input, and these are superimposed and passed to the PLC modem (slave unit) 41, 42 side.

  The above processing is a case where an electrical signal (data) is sent from the distribution board circuit unit 14 to the PLC modems (slave units) 41, 42. The distribution board circuit unit is transmitted from the PLC modems (slave units) 41, 42. It is assumed that the flow of electrical signals (data) to 14 is processed through the reverse route.

  As described above, in this embodiment, since an electric signal (data) can be transmitted only to a necessary power source, the same effects as those of the first embodiment of the present invention described above can be obtained.

  In the PLC home network related to the present invention, electrical signals (data) are on all power supplies distributed to the PLC modems (slave devices) 41 and 42 side. On the other hand, in the present invention, means (data path control circuit 11 or data processing circuit unit 15) that does not pass electrical signals (data) to a power supply that does not require network connection is provided in the distribution boards 1 and 1a. By disposing, it is possible to prevent data leakage to the power supply wiring other than the power supply to which the network terminals 51 and 52 are connected, and noise due to reflection in the power supply wiring other than the power supply to which the network terminals 51 and 52 are connected. Can be reduced.

  In the present invention, the information on the power source that requires network connection or the information on the power source that does not require network connection is previously stored in the data path control circuit 11 and the memory units 112 and 154 of the data processing circuit unit 15 through the man-machine interface 12. By registering, it is possible to determine whether the data path control circuit 11 or the data processing circuit unit 15 is a power source that requires network connection or a power source that does not require network connection.

It is a block diagram which shows the structure of the electricity distribution panel by the 1st Example of this invention. FIG. 2 is a block diagram illustrating a configuration example of a data path control circuit in FIG. 1. FIG. 3 is a block diagram illustrating a connection example of a switch and an LPF in FIG. 2. 2 is a flowchart showing an operation of the data path control circuit of FIG. It is a block diagram which shows the structural example of the electricity distribution panel by the 2nd Example of this invention. FIG. 6 is a block diagram illustrating a configuration example of a data processing circuit unit in FIG. 5. It is a block diagram which shows the structural example of the PLC home network relevant to this invention.

Explanation of symbols

1,1a Distribution board
3 Outdoor outlet
6 PLC modem (base unit)
11 Data path control circuit
12 Man-machine interface
13 Power distribution circuit
14 Distribution board circuit
15 Data processing circuit
21-24 Indoor outlet
41, 42 PLC modem (slave unit)
51,52 Network terminal
111 Control unit
112,154 Memory part
121-125 switches
131-135 LPF
151,171-175 Filter section
152 A / D conversion processing circuit section
153 Data processing / control circuit
161-165 D / A conversion processing circuit
SW1 to SW4 terminals

Claims (11)

A distribution board that distributes and supplies power to the power wiring in a PLC (Power Line Communications) home network that uses existing power wiring wired inside the building as a communication line for electrical signals,
A distribution board comprising control means for preventing the electrical signal from passing through power supply wiring that does not require network connection. The PLC home network includes a master unit that superimposes the electrical signal on the power source, and a slave unit that terminates the power source and the electrical signal and transmits to the network terminal.
2. The distribution board according to claim 1, wherein the control means passes the electric signal only through a power supply wiring to which the slave unit is connected. A memory that holds at least one of information on the power supply wiring that requires the network connection and information on the power supply that does not require the network connection;
The distribution board according to claim 1, wherein the control unit determines a power supply wiring that does not require the network connection based on information held in the memory. Filter means for passing the power supply and blocking the electric signal, and switch means for selecting any one of a power supply path passing through the filter means and a power supply path not passing through the filter means are provided corresponding to the power supply wiring. ,
4. The control unit according to claim 1, wherein the control unit controls the switch unit so as not to pass the electric signal to a power supply wiring that does not require network connection. Distribution board. Filter means for superimposing and outputting the power supply and the electrical signal is provided corresponding to the power supply wiring,
4. The control unit according to claim 1, wherein the control unit controls the filter unit so as not to pass the electric signal to a power supply wiring that does not require network connection. Distribution board.   A PLC home network comprising the distribution board according to any one of claims 1 to 5. A data separation method used for a distribution board that distributes and supplies power to the power wiring in a PLC (Power Line Communications) home network that uses existing power wiring wired inside the building as a communication line for electrical signals. There,
The data separation method according to claim 1, wherein the electrical signal is prevented from passing through a power supply wiring that does not require network connection by a control means in the distribution board. The PLC home network includes a master unit that superimposes the electrical signal on the power source, and a slave unit that terminates the power source and the electrical signal and transmits to the network terminal.
8. The data separation method according to claim 7, wherein the control means passes the electric signal only through a power supply wiring to which the slave unit is connected. The distribution board is provided with a memory that holds at least one of information on the power supply wiring that requires the network connection and information on the power supply that does not require the network connection,
9. The data separation method according to claim 7, wherein the control unit determines a power supply wiring that does not require the network connection based on information stored in the memory. In the distribution board, filter means for passing the power supply and blocking the electric signal, and switch means for selecting any one of a power supply path passing through the filter means and a power supply path not passing through the filter means, Provided for wiring,
10. The control device according to claim 7, wherein the control unit controls the switch unit so as not to pass the electric signal to a power supply wiring that does not require network connection. 11. Data separation method. In the distribution board, filter means for superimposing and outputting the power supply and the electrical signal is provided corresponding to the power supply wiring,
10. The control device according to claim 7, wherein the control unit controls the filter unit so as not to pass the electrical signal to a power supply wiring that does not require network connection. 11. Data separation method.

Images