JP2007329736A - Communication path improving device for power line communication - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a communication path improving device, capable of effectively realizing improvement in the degree of balancing for a wiring system at a frequency range in which power line communication is performed, and reduction in the noise, generated by apparatuses other than a power line communication apparatus. <P>SOLUTION: The communication path improvement device for power line communications is connected to a power line communication path utilized as a communication medium for performing power line communication. The device comprises a common-mode choke coil 2 and a differential-mode choke coil 3. At the common-mode choke coil 2, a pair of electric wires pulled out from the power line communication path side is wound in parallel to the axial direction of a magnetic core and in the same direction. At the differential-mode choke coil 3, each wire of a pair of electric wires pulled out from the common-mode choke coil 2 is wound to the axial direction of a magnetic core. The common-mode choke coil 2 and the differential-mode choke coil 3 are inserted in series between the power line communication path and an apparatus, other than a power line communication apparatus for communicating, utilizing the power line communication path. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention is connected to a device other than a communication device (hereinafter referred to as “power line communication device”) that is connected to a power line that performs power line communication (hereinafter referred to as “power line communication line”) and performs communication using the power line communication line. The present invention relates to a communication line improvement device for power line communication that intervenes to improve communication quality of a power line communication line.

  Conventionally, a common mode choke coil is inserted for the purpose of suppressing common mode current flowing in the power line communication line and improving communication quality in the power line. For example, the following Patent Document 1 discloses a technique for reducing common mode noise by inserting a common mode choke coil into a joint box or wiring adapter of a wiring constituting a power line communication line and increasing the common mode impedance. Has been.

JP 2005-333224 A

  In Patent Document 1, the common mode choke coil inserted into the joint box or the wiring adapter is assumed to have a sufficiently large common mode impedance, but does not describe how to wind the winding. The reason is considered that Patent Document 1 focuses on the invention only for reducing common mode noise.

  On the other hand, the common mode choke coil has the function of increasing the balance of the power line communication line in addition to the function of increasing the impedance of the common mode. For this reason, use of the common mode choke coil can be expected to reduce noise and improve communication quality. However, in order to increase the degree of balance over a wide frequency range in which power line communication is performed, the winding method of the common mode choke coil is important. However, in the related art including the above-mentioned Patent Document 1, this point is taken into consideration. It is a problem.

  In addition, since the conventional technology has a configuration in which only the common mode choke coil is inserted, other differential mode noises generated by devices other than the power line communication device connected to the power line communication line cannot be suppressed. There are also challenges.

  The present invention has been made in view of the above, and is effective in improving the balance of the wiring system in the frequency range in which power line communication is performed and reducing differential mode noise generated by devices other than the power line communication device. An object of the present invention is to provide a communication line improving device for power line communication that is realized.

  In order to solve the above-described problems and achieve the object, a communication line improvement device for power line communication according to the present invention is a communication line improvement device for power line communication connected to a power line communication line used as a communication medium for performing power line communication. A pair of electric wires drawn from the power line communication line side is wound in the same direction and parallel to the axial direction of the magnetic core, and a pair of electric wires drawn from the common mode choke coil A differential mode choke coil in which each of the electric wires is wound in the axial direction of the magnetic core for each electric wire, and the common mode choke coil and the differential mode choke coil include the power line communication line. And a device other than the power line communication device that performs communication using the power line communication line. Characterized in that it is constituted by.

  According to the communication line improvement device for power line communication according to the present invention, a common mode choke coil configured by winding a pair of electric wires drawn from the power line communication line side in parallel and in the same direction as the axial direction of the magnetic core, A power line that communicates using a power line communication line and a power line communication line with a differential mode choke coil configured by winding a pair of wires drawn from a common mode choke coil in the axial direction of the magnetic core for each wire. Since it is inserted in series with a device other than the communication device, the balance in the frequency range in which power line communication is performed is improved, and noise including differential mode noise generated by devices other than the power line communication device is improved. There exists an effect that it can reduce effectively.

  DESCRIPTION OF EMBODIMENTS Preferred embodiments of a communication line improving device for power line communication according to the present invention will be described below in detail with reference to the drawings. In addition, this invention is not limited by this embodiment.

Embodiment 1 FIG.
1 is a diagram illustrating a configuration of a communication line improvement device for power line communication according to a first embodiment of the present invention. A communication line improvement device 1 for power line communication shown in FIG. 1 includes an outlet plug 4, a common mode choke coil 2, a differential mode choke coil 3, and an outlet jack 5. The common mode choke coil 2 includes a magnetic core made of a magnetic material such as ferrite, for example, and two electric wires drawn from the end opposite to the plug of the outlet plug 4 are parallel to and in the axial direction of the magnetic core. It has a structure wound in the direction. Further, the differential mode choke coil 3 includes a magnetic core made of the same magnetic material as that of the common mode choke coil 2 in one component, and one electric wire drawn from the common mode choke coil 2 is a magnetic core. It has a structure wound in the axial direction. The differential mode choke coil 3 is composed of a pair of windings of one and the other wires drawn from the common mode choke coil 2, and the pair of wires drawn from the differential mode choke coil 3 is accommodated in the outlet jack 5. Is done.

  As shown in FIG. 1, the power line communication communication line improving apparatus 1 configured as described above has a plug plug 4 connected to the power line side or a plug jack provided on the power line side, and a plug jack 5. Are connected to devices other than the power line communication device (for example, home appliances, hereinafter simply referred to as “other devices”).

  1, the common mode choke coil 2 and the differential mode choke coil 3 are arranged in this order between the outlet plug 4 and the outlet jack 5. However, the common mode choke coil 2 and the differential mode choke coil 3 are arranged in this order. The order of connection with the mode choke coil 3 may be reversed. That is, the differential mode choke coil 3 and the common mode choke coil 2 may be arranged in this order between the outlet plug 4 and the outlet jack 5.

  Next, connection with the power line of the communication line improving apparatus for power line communication will be described. FIG. 2: is a figure which shows the example of a connection of the communication line improvement apparatus for power line communication concerning Embodiment 1 of this invention, and a power line communication line. In the figure, a communication line improvement device 1 for power line communication is inserted between a power line and another device. Specifically, the outlet plug of the power line communication line improvement device 1 is inserted into the power line outlet jack, and the outlet plug of another device is inserted into the outlet jack of the power line communication line improvement device 1. In addition, when connecting the communication line improvement apparatus 1 for power line communication directly to the connection terminal part of a power line, the outlet plug 4 as shown in FIG. 1 becomes unnecessary. On the other hand, when the power line communication communication line improving apparatus 1 is used by being incorporated in, for example, another apparatus, the outlet jack 5 as shown in FIG. 1 is not necessary.

  Since the common mode choke coil 2 is inserted between the power line communication line and another device connected to the power line communication line by using the connection mode as shown in FIG. It is possible to improve the degree of unbalance of the power line communication line that may be deteriorated by being connected. Moreover, the common mode electric current which flows into a power line communication track | line can be suppressed by such a connection aspect.

  Further, according to this connection mode, the differential mode choke coil 3 is inserted between the power line communication line and another device connected to the power line communication line, so that the differential mode noise generated by the other device is reduced. The communication quality in the power line communication line can be improved.

  As shown in FIG. 1, in the communication line improvement device for power line communication according to this embodiment, the common mode choke coil 2 has a balanced winding structure in which a pair of electric wires are wound in parallel and in the same direction with the magnetic core. Therefore, for example, an unbalanced component can be suppressed as compared with a common mode choke coil wound by split winding, and the balance of the power line communication line can be improved to a high frequency.

  In addition to the above, in the communication line improvement device for power line communication according to this embodiment, a large common mode impedance can be maintained up to a high frequency, so that other devices of the common mode current flowing in the power line communication line can be maintained. It is possible to increase the deterrence effect against the outflow of water.

  As described above, the communication line improvement device for power line communication according to this embodiment is configured by winding a pair of electric wires drawn from the power line communication line side in parallel and in the same direction as the axial direction of the magnetic core. Using a power line communication line and a power line communication line, a common mode choke coil and a differential mode choke coil configured by winding a pair of wires drawn from the common mode choke coil in the axial direction of the magnetic core for each wire. Therefore, the balance in the frequency range in which power line communication is performed is improved, and a differential generated by a device other than the power line communication device is provided. Noise including mode noise can be effectively reduced.

Embodiment 2. FIG.
FIG. 3: is a figure which shows the structure of the communication line improvement apparatus for power line communications concerning Embodiment 2 of this invention. The communication line improvement device 1 for power line communication shown in FIG. 1 has a structure in which the components of the common mode choke coil 2, the differential mode choke coil 3, the outlet plug 4 and the outlet jack 5 shown in FIG.

  According to the configuration as shown in FIG. 3, it is possible to eliminate the extra wiring that connects the components, and to obtain an effect that the communication line improvement device for power line communication can be downsized.

  As described above, the communication line improvement device for power line communication according to this embodiment is configured to integrally mount the common mode choke coil, the differential mode choke coil, the outlet plug, and the outlet jack. It is possible to delete the extra wiring connecting the parts, and it is possible to reduce the size of the communication line improvement device for power line communication.

Embodiment 3 FIG.
FIG. 4: is a figure which shows the structure of the communication line improvement apparatus for power line communications concerning Embodiment 3 of this invention. The communication line improvement device 1 for power line communication shown in FIG. 1 is different from the outlet jack 5 between the common mode choke coil 2 and the outlet plug 4 in the communication line improvement device 1 for power line communication shown in FIG. Is configured to be inserted. In addition, about another structure, it is the same as that of Embodiment 2 shown in FIG. 3, or equivalent, The same code | symbol is attached | subjected to a common structure part, and the description is abbreviate | omitted.

  According to the configuration as shown in FIG. 4, another power line communication device can be connected to the outlet jack 5 provided between the common mode choke coil 2 and the outlet plug 4. That is, an outlet can be shared with other power line communication devices, and the effect of increasing the degree of freedom of the connection location of the power line communication device can be obtained.

  As described above, the communication line improvement device for power line communication according to this embodiment is an outlet that enables connection of another power line communication device different from the power line communication device to the power line communication line side of the common mode choke coil. Since the jack is provided, the outlet can be shared with other power line communication devices, and the degree of freedom of the connection location of the power line communication device can be increased.

Embodiment 4 FIG.
FIG. 5: is a figure which shows the structure of the communication line improvement apparatus for power line communications concerning Embodiment 4 of this invention. The communication line improvement device 1 for power line communication shown in the figure is different from the common mode choke coil 2 between the outlet jack 5 and the outlet plug 4 in the communication line improvement device 1 for power line communication shown in FIG. The coil 7 is inserted. Other configurations are the same as or equivalent to those of the third embodiment shown in FIG. 4, and the same reference numerals are given to the common components, and the description thereof is omitted.

  According to the configuration shown in FIG. 5, when another power line communication device is connected to the outlet jack 5, the common mode choke coil 7 is inserted between the other connected power line communication device and the power line communication line. Since it becomes a structure, the effect that the unbalance degree of the power line communication line which may be deteriorated by the connection of the other newly connected power line communication apparatus can be improved is acquired.

  As described above, the communication line improvement device for power line communication according to this embodiment is different from the common mode choke coil on the power line communication line side of the outlet jack that enables connection of other power line communication devices. Since the choke coil is provided, it is possible to improve the degree of unbalance of the power line communication line that may be deteriorated by the connection of another newly connected power line communication device.

Embodiment 5 FIG.
FIG. 6: is a figure which shows the structure of the communication line improvement apparatus for power line communications concerning Embodiment 5 of this invention. The communication line improvement device 1 for power line communication shown in the figure is configured such that a differential mode capacitor 8 is inserted between the differential mode choke coil 3 and the outlet jack 5 in the communication line improvement device 1 for power line communication shown in FIG. Yes. In addition, about another structure, it is the same as that of Embodiment 2 shown in FIG. 3, or equivalent, The same code | symbol is attached | subjected to a common structure part, and the description is abbreviate | omitted.

  According to the configuration shown in FIG. 5, since the differential mode capacitor 8 is inserted between the power line communication line and another device connected to the power line communication line, in addition to the effects of the second embodiment. In addition, it is possible to increase the deterrent effect against the outflow of noise generated from other devices connected to the power line communication line to the power line communication line.

  As described above, the communication line improvement device for power line communication according to this embodiment reduces the differential mode current to the power line communication line side on the side where devices other than the power line communication device of the differential mode choke coil are connected. Since the differential mode capacitor is further provided, it is possible to suppress the outflow of noise generated from another device connected to the power line communication line to the power line communication line.

  In this embodiment, the configuration in which the differential mode capacitor 8 is inserted between the differential mode choke coil 3 and the outlet jack 5 of the power line communication communication line improving apparatus 1 shown in FIG. The power line communication communication line improvement device 1 shown in FIG. 5 can be similarly applied, and in addition to the effects of the respective embodiments, the effects of the present embodiment can also be obtained.

  As described above, the present invention is useful as a device that is connected to a power line communication line and improves the communication quality of the power line communication line that has deteriorated due to the connection of devices other than the communication device.

It is a figure which shows the structure of the communication line improvement apparatus for power line communications concerning Embodiment 1 of this invention. It is a figure which shows the example of a connection of the communication line improvement apparatus for power line communications concerning Embodiment 1 of this invention, and a power line communication line. It is a figure which shows the structure of the communication line improvement apparatus for power line communication concerning Embodiment 2 of this invention. It is a figure which shows the structure of the communication line improvement apparatus for power line communications concerning Embodiment 3 of this invention. It is a figure which shows the structure of the communication line improvement apparatus for power line communications concerning Embodiment 4 of this invention. It is a figure which shows the structure of the communication line improvement apparatus for power line communications concerning Embodiment 5 of this invention.

Explanation of symbols

1 Communication line improvement device for power line communication 2, 7 Common mode choke coil 3 Differential mode choke coil 4 Outlet plug 5, 6 Outlet jack 8 Differential mode capacitor

Claims (6)

A communication line improvement device for power line communication connected to a power line communication line used as a communication medium for performing power line communication,
A common mode choke coil in which a pair of electric wires drawn from the power line communication line side is wound in the same direction and parallel to the axial direction of the magnetic core;
A differential mode choke coil in which each electric wire is wound in the axial direction of the magnetic core for each electric wire of a pair of electric wires drawn out from the common mode choke coil;
With
The common mode choke coil and the differential mode choke coil are configured to be inserted in series between the power line communication line and a device other than a power line communication device that performs communication using the power line communication line. A communication line improvement device for power line communication, which is characterized. An outlet plug connected to each one end of the pair of electric wires and provided at an end on the power line communication line side,
An outlet jack connected to each one end of the pair of electric wires and provided at an end on a different side from the power line communication line
The communication line improvement device for power line communication according to claim 1, comprising:   3. The communication line improvement device for power line communication according to claim 2, wherein the common mode choke coil, the differential mode choke coil, the outlet plug, and the outlet jack are integrally mounted.   4. The power line communication according to claim 3, wherein an outlet jack that enables connection of another power line communication device different from the power line communication device is provided on the power line communication line side of the common mode choke coil. Communication line improvement device.   5. The power line communication according to claim 4, wherein a common mode choke coil different from the common mode choke coil is provided on the power line communication line side of an outlet jack that enables connection of the other power line communication device. Communication line improvement device for use.   6. The differential mode choke coil is further provided with a differential mode capacitor for reducing a differential mode current to the power line communication line side on a side to which a device other than the power line communication device is connected. The communication line improvement apparatus for power line communication as described in any one of these.

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