JP2003298480A - Circuit board with communication module, circuit device inside apparatus, and electric apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a circuit board with communication module, a circuit device inside an apparatus, and an electric apparatus capable of reducing the effect of the electric apparatus connected to an electric lamp line 4 in the case of transmitting/receiving information by using a communication module 5 via the electric lamp line 4. <P>SOLUTION: The circuit board with communication module for solving the task above and related to this invention is provided with: a circuit section 2 of the electric apparatus; a power supply line 3 for supplying power to the circuit section 2; a communication module section 5 for making information communication by using the electric lamp line 4 (or power line) for a communication line; and a filter 6 placed before an input section of the electric lamp line 4 to the control circuit section 2. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a circuit board with a communication module, a circuit device inside a device, and an electric device.

[0002]

2. Description of the Related Art It has become common to connect a plurality of electric devices typified by computers to share information held by the electric devices. The electric device existing inside the house and the electric device existing outside the house are usually connected via a telephone line. In many cases, the method of connecting via a telephone line is a method of connecting a connector of an electric device existing in a house and a modular jack, which is the tip of a telephone line, by a predetermined cable line. .

In recent years, instead of a telephone line, an electric device existing in a house through an electric power line stretched around the house,
It is considered to connect with an electric device existing outside the house or with a plurality of electric devices existing inside the house. That is, in Japan, the frequency of the AC voltage flowing through the power line is 50 Hz or 60 Hz, but a high frequency of about 150 kHz to 400 kHz is superimposed on this AC voltage, and various information is used between a plurality of electric devices by using this high frequency. It is considered to send and receive.

Since the tip of the power line is located on the wall surface in the house as an "outlet", transmitting and receiving information between electric devices by using the power line requires special equipment in the existing house. There is an advantage that information can be transmitted and received between electric devices without being provided. Further, conventionally, it is necessary to connect an electric device to two lines, a power line that supplies electric power to the electric device and a telephone line that transmits and receives information to and from the electric device. However, information is transmitted and received through the electric line. In this case, the connection for power supply and information transmission / reception can be made simply by inserting the end of the electric plug of the electric device into the outlet, so that the connection is simplified. Further, since an outlet is usually provided in each room in the house, even if an electric device is moved from one room to another, simply inserting the tip of the electric plug of the electric device into the outlet will reduce the power consumption. It is also very convenient in that a connection is made for supplying and transmitting / receiving information.

FIG. 4 is a diagram schematically showing a power line communication module built-in device for transmitting and receiving information using a power line. As shown in FIG. 4, the device 1 with a built-in power line communication module performs information communication using a circuit section 2 of an electric device, a power supply line 3 for supplying power to the circuit section 2, and a power line 4 as a communication line. It has the communication module part 5 for performing. In the device 1 with a built-in power line communication module, power is supplied from the power line 4 through which the AC voltage is transmitted, and the AC voltage is sent to the circuit section 2 of the electric device. As a result, a predetermined operation / action is brought about. On the other hand, the communication module unit 5 converts the information to be transmitted / received into a high frequency of about 150 kHz to 400 kHz and superimposes it on the AC voltage flowing through the power line 4.

[0006]

As shown in FIG. 4, for example, in a case where a capacitor 9 is sandwiched between extension lines of two parallel power supply lines 3 in a circuit section 2 of an electric device. Therefore, the AC voltage signal may be attenuated. In particular, the input impedance of the circuit section 2 of the electric device has a frequency (150 kHz to 400 kHz in the above example) at which the information transmitted and received by the communication module section 5 is converted.
If the frequency is low in the band (about Hz), the signal of the AC voltage of the frequency is attenuated, which makes it difficult for the communication module unit 5 to transmit and receive information.

The present invention has been made to solve the above problems, and reduces the influence from the electric equipment connected to the electric power line 4 when transmitting and receiving information using the communication module 5 via the electric power line 4. It is an object of the present invention to provide a circuit board with a communication module, a circuit device inside a device, and an electric device capable of performing the above.

[0008]

A circuit board with a communication module according to the present invention which solves the above-mentioned problems, includes a circuit section of an electric device, a power supply line for supplying electric power to the circuit section, a power line or a power line. A communication module unit for performing information communication using the communication line as a communication line, and a filter provided in front of the input unit to the circuit unit of the power supply line.

A circuit device inside a device according to the present invention for solving the above-mentioned problems uses a circuit board of an electric device, an electric power supply line for supplying electric power to the circuit board, and an information line using a power line or a power line as a communication line. And a filter provided in front of the input part of the power supply line to the circuit board.

An electric device according to the present invention which solves the above-mentioned problems is for performing information communication by using a circuit portion of the electric device, a power supply line for supplying electric power to the circuit portion, and a power line or a power line as a communication line. And a circuit board with a communication module including a filter provided in front of the input section to the circuit section of the power supply line. Instead of this, an electric device according to the present invention is a communication module for performing information communication using a circuit board of the electric device, a power supply line for supplying electric power to the circuit board, and a power line or a power line as a communication line. And a filter in front of the input part of the power supply line to the circuit board.

The filter preferably has a high impedance at least in the communication signal frequency band of the communication module or the communication module section.

It is preferable that the filter attenuates at least noise and high frequencies within the signal frequency band of the power line communication unit, out of noise and high frequencies flowing out from the circuit section and the circuit board to the power supply line.

The means has a high impedance at least in the communication signal frequency band of the communication module or the communication module section and at least the communication signal frequency of the communication module and the communication module section out of noise and high frequency flowing out from the circuit section and the circuit board to the power supply line. It is preferable to attenuate noise and high frequency in the band.

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described in detail below.

(First Embodiment) As shown in FIG. 1, in a circuit board 1 with a communication module according to the first embodiment, a circuit section 2 of an electric device represented by a power supply circuit of the electric device is provided. Before the power supply line 3 that supplies power to the circuit unit 2, the communication module unit 5 for performing information communication using the power line 4 as a communication line, and the input unit of the power supply line 3 to the circuit unit 2. The filter 6 is provided. In addition,
A power line may be used instead of the power line 4. This also applies to the second and subsequent embodiments described below.

The filter 6 provided on the power supply line 3 located between the circuit section 2 of the electric device and the electric power line 4 has an inductance 61 made of a coil. In FIG. 1, in order to prevent interference between the circuit section 2 of the electric device and the communication module section 5, two parallel power supply lines 3 are provided.
Inductors 61R and 61L are provided on both sides. In order to prevent signal attenuation in the high frequency band used by the communication module unit 5, the inductance 61 may be provided only on one of the two parallel power supply lines 3.

With respect to the inductance value of the inductance 61, so-called persons skilled in the art will understand that the signal in this high frequency band is not attenuated in accordance with the high frequency band (for example, about 150 kHz to 400 kHz) used by the communication module section 5. It can be set appropriately. To this end, the inductance 61 preferably has a high impedance in the high frequency band. In addition, the inductances 61R and 61L are provided on both of the two parallel power supply lines 3.
In the case where is provided, it is preferable that they have substantially the same inductance value.

The filter 6 may have a noise filter for reducing noise from the electric equipment connected to the circuit section 2 and the electric power line 4, if necessary. It is preferable that this noise filter attenuates or removes noise flowing out to the power supply line 3 and at least high frequency in the high frequency band used by the communication module unit 5 (about 150 kHz to 400 kHz in the above example).

In FIG. 1, a circuit section 2 of an electric device,
The circuit board with a communication module 1 in which the power supply line 3, the power line 4, the communication module section 5, and the filter 6 are mounted on one board has been described as an example, but as shown in FIG. Circuit device 12 provided inside electric device 11
However, it may have the circuit section 2 of the electric device, the power supply line 3, the electric power line 4, the communication module section 5, and the filter 6. In addition, the circuit board with a communication module 1 as described above
An electric device provided with is also included in the gist of the present invention.

That is, the present invention is not limited to a single board on which all of the circuit section 2, the power supply line 3, the electric power line 4, the communication module section 5, and the filter 6 of the electric device are mounted. It also includes electrical equipment equipped with such a substrate. Further, the circuit section 2, the power supply line 3, the electric power line 4, the communication module unit 5, and the filter 6 of the electric device are not necessarily all mounted on the substrate, and information transmission / reception is performed using the electric power line. If the electric device capable of performing the above includes the circuit unit 2, the power supply line 3, the electric power line 4, the communication module unit 5, and the filter 6 described above, it is included in the spirit of the present invention.

The circuit board 1 with the communication module does not necessarily have to be provided with the circuit section 2 of the electric device, but is provided with the power supply line 3, the power line 4, the communication module section 5, and the filter 6. You can just do it. In such a circuit board with a communication module 1, the power supply line 3 is connected via a predetermined connector provided at the tip of the power supply line 3.
May be connected to the circuit section 2 of the electric device. In this case, information may be transmitted and received between the electric device and the communication module unit 5 via this connector. In addition, information may be transmitted and received between the electric device and the communication module unit 5 via another connector or a wireless communication device.

In the first embodiment, the filter 6 having the inductance 61 made of a coil is provided on the power supply line 3 located between the circuit section 2 of the electric device and the electric power line 4. There is. With such a filter 6,
It is possible to suppress a problem that is particularly likely to occur when the input impedance of the circuit unit 2 of the electric device is low in a frequency band in which information transmitted and received by the communication module unit 5 is converted, such as a signal of an AC voltage having the frequency being attenuated. it can. Therefore, the communication module unit 5 can reliably transmit and receive information via the power line 4 without being affected by the circuit unit 2 of the electric device.

(Second Embodiment) As shown in FIG. 3, a plurality of communication modules 5 are used in the second embodiment. In FIG. 3, two communication modules 5 are shown as an example. Each communication module 5
The frequency bands used by a and 5b for transmitting and receiving information to and from other electric devices (strictly speaking, communication modules of the other electric devices) are different. As an example, the communication module 5a has a kHz of about 150 kHz to 400 kHz.
Band, communication module 5b is 10MHz to 50M
Use the MHz band around Hz. Hereinafter, for ease of explanation, the communication modules 5a and 5b are referred to as "kHz band communication module 5a" and "MHz band communication module 5b", respectively.

In the second embodiment, each communication module 5 has a filter 6. of course,
Since the filters 6 may be used as needed, not all the communication modules 5 need to have the filters 6, but at least some of the communication modules 5 have the filters 6. Further, as in the first embodiment, the filter 6c is sandwiched between the circuit section 2 of the electric device and the electric power line 4. In the following description, it is assumed that both the kHz band communication module 5a and the MHz band communication module 5b have the filter 6a and the filter 6b, respectively.

The filter 6a included in the kHz band communication module 5a passes only the frequency band used by the kHz band communication module 5a from the AC voltage. In the present embodiment, an AC voltage having a frequency of about 50 kHz to 60 Hz and an AC voltage having a frequency of about 150 kHz to 400 kHz and an AC voltage having a frequency of about 10 MHz to 50 MHz are superimposed on each other. The filter 6a has a frequency of 1 from among the three types of AC voltages having different frequencies.
Only AC voltage of about 50 kHz to 400 kHz is passed. Similarly, the filter 6b has a frequency of 10M.
Only AC voltage of about Hz to 50 MHz is passed.

In this way, as in the first embodiment, the filter 6 causes the signal of the AC voltage of the relevant frequency not only due to the influence of the circuit section 2 of the electric device but also due to the influence of the other communication module section 5. The problem of attenuation can be suppressed. That is, by the filter 6a, KHz
The band communication module 5a is less likely to be affected by the MHz band communication module 5b. Therefore, the circuit section 2 of the electric device
Not only the influence of the above, but also the influence from the other communication module unit 5 is reduced, so that the communication module unit 5 can reliably transmit and receive information via the power line 4. Further, by changing the frequency to be used for each communication module 5, a plurality of types of information can be transmitted and received via the power line 4.

The filter 6 used in the second embodiment is the same as that described in the first embodiment, and if necessary, the electric device connected to the circuit section 2 or the power line 4 may be connected to the filter 6. A noise filter that reduces noise may be included.

[0028]

According to the present invention, when transmitting / receiving information using a communication module via a power line, it is possible to reduce the influence from an electric device or the like connected to the power line, Provided are a circuit device inside a device and an electric device.

[Brief description of drawings]

FIG. 1 is a conceptual diagram showing a circuit board with a communication module 1 according to a first embodiment.

FIG. 2 is a conceptual diagram showing a modified example of the first embodiment.

FIG. 3 is a conceptual diagram showing a circuit board with a communication module 1 according to a second embodiment.

FIG. 4 is a diagram schematically showing a device with a built-in power line communication module that transmits and receives information using a power line.

[Explanation of symbols]

1: Equipment with built-in power line communication module 2: Circuit part of electrical equipment 3: Power supply line 4: Electric power line (or power line) 5: Communication module 6: Filter 9: Capacitor 11: Electrical equipment 12: Circuit device

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Hideki Yoshitake             1006 Kadoma, Kadoma-shi, Osaka Matsushita Electric             Sangyo Co., Ltd. F term (reference) 5K046 AA03 CC17 PP01 PS05 PS21                       PS24 PS51                 5K048 AA09 BA12 DC06

Claims (7)

[Claims] 1. A circuit section of an electric device, a power supply line for supplying electric power to the circuit section, a communication module section for performing information communication using a power line or a power line as a communication line, and the power supply line. A circuit board with a communication module, comprising: a filter provided in front of an input section to the circuit section. 2. A circuit board of an electric device, a power supply line for supplying power to the circuit board, a communication module for performing information communication using a power line or a power line as a communication line, and the power supply line. A circuit device inside a device, which includes a filter provided in front of an input section to a circuit board. 3. A circuit section of an electric device, a power supply line for supplying electric power to the circuit section, a communication module section for performing information communication using a power line or a power line as a communication line, and the power supply line. An electric device comprising: a circuit board with a communication module, comprising a filter provided in front of an input section to the circuit section. 4. A circuit board of an electric device, a power supply line for supplying power to the circuit board, a communication module section for performing information communication using a power line or a power line as a communication line, and the power supply line. An electric device having a filter in front of an input section to the circuit board. 5. The circuit board with a communication module according to claim 1, wherein the filter has a high impedance at least in a communication signal frequency band of the communication module or the communication module section. Electrical equipment. 6. The filter attenuates at least noise and high frequencies within a signal frequency band of the power line communication unit, out of noise and high frequencies flowing out from the circuit unit and the circuit board to the power supply line. The circuit board with a communication module or an electric device according to any one of claims 1 to 4. 7. The means has a high impedance at least in a communication signal frequency band of the communication module or the communication module section, and at least the communication among noise and high frequency flowing out from the circuit section and the circuit board to the power supply line. 5. A circuit board with a communication module or an electric device according to claim 1, wherein noise and high frequencies in a communication signal frequency band of the module and the communication module unit are attenuated.