KR20040050716A - Plc charger with power line communication function - Google Patents

Abstract

PURPOSE: A PLC(Power Line Communication) charger having a PLC function is provided to charge a portable apparatus, and to perform PLC, thereby carrying out charging and data transmitting processes with one interface and charging/communicating in any place where a power line is equipped. CONSTITUTION: A power plug(21) is comprised. An SMPS(Switched Mode Power Supply)(22) converts AC power outputted from the power plug(21) into predetermined DC power. A serial interface(23) supplies the DC power(22) outside, and performs input/output processes of data. A coupler(24) detects and receives a signal from a power line through the power plug(21), and supplies a transmission signal to the power line. A PLC module(25) receives the DC power from the SMPS(22), supplies a receiving signal detected through the coupler(24) by carrying out a predetermined receiving process, and supplies the transmission signal to the coupler(24) by conducting a predetermined transmission process.

Description

PLC charger with power line communication function {PLC CHARGER WITH POWER LINE COMMUNICATION FUNCTION}

The present invention relates to a PLC charger having a power line communication function, and in particular, it is possible to charge a portable device such as a PDA (Personal Digital Assistant) or a mobile phone, and to perform power line communication. The present invention relates to a PLC charger having a power line communication function capable of performing charging and data transmission through a single interface and enabling charging and communication wherever there is a power line.

In general, portable devices such as PDAs (Personal Digital Assistants) or mobile phones (Mobile Phones) need to recharge the battery every predetermined time. For this charging, a separate charger must be carried.

On the other hand, various communication systems are emerging due to the development of digital communication technology, and these digital communication systems are largely classified into wired communication and wireless communication. In this case, it is considered that power line communication is a mixed form of wired and wireless. This may be because wire lines called power lines are used, but a separate new wiring is not necessary. That is the same effect as wireless communication.

In the past, there has been analog type low speed power line communication for control and voice communication, but recently, with the advent of high speed communication network using ADSL and cable modem in accordance with the spread of the Internet, many products around us such as home appliances have been digitized In a situation where the necessity of the network becomes more important, the communication system technology of the digital communication method capable of communication and high speed communication is rapidly developing. Due to this background, home networking for homes is naturally recognized, and a large market is expected to be formed. Digital high-speed power line communication is expected to play a key role in home communication networks. This is expected to come true.

The following is an example of use of a conventional PDA charger, the use of this PDA charger will be described with reference to FIG.

1 is a diagram illustrating a conventional PDA charger, referring to FIG. 1, a conventional PDA charger converts AC power into DC power suitable for a PDA and supplies the same to a PDA so that a battery of the PDA is charged. For data transmission / reception, the data transmission / reception line is connected to the PC.

As described above, in the case of using a charger of a mobile communication device such as a PDA charger, separate equipment such as a communication dedicated cable for data transmission and reception is required.

For this reason, the conventional charger provides only a charging function, so there was a problem that data transmission and reception could not be performed.

The present invention has been made to solve the above problems, the object of which is to power a portable device such as a PDA (Personal Digital Assistant) or a mobile phone (Mobile Phone), and also to perform power line communication power line To provide a PLC charger having a communication function.

In addition, another object of the present invention is to provide a PLC charger having a power line communication function that can perform charging and data transmission as a single interface, and wherever the power line is located, it is possible to charge and communicate.

1 is a diagram illustrating a conventional PDA charger.

2 is a diagram illustrating the use of a PLC charger according to the present invention.

3 is an internal block diagram of the PLC charger of FIG. 2.

4 is an internal block diagram of the SMPS of FIG.

5 is a block diagram of the PLC module of FIG. 3.

Explanation of symbols on the main parts of the drawings

20: PLC charger 21: power plug

22: Switched Mode Power Supply (SMPS) 23: Serial Interface

24: coupler 25: PLC module

221: transformer 222-225: first to fourth converter

251: AFE section 252: signal conversion section

253: home plug MAC / PHY unit 254: I / O interface unit

In order to achieve the above object of the present invention, the PLC charger of the present invention

A PLC charger for powering a portable communication device and performing data transmission and reception through a power line,

Power plug;

An SMPS for converting AC power from the power plug into a predetermined DC power;

A serial interface for supplying DC power from the SMPS to the outside and performing input / output of data;

A coupler for detecting and receiving a signal from a power line through the power plug and providing a transmission signal to the power line; And

DC power is supplied from the SMPS, a received signal detected through the coupler is performed through the serial interface by a predetermined reception process, and a transmission signal is transmitted through the serial interface. A PLC module provided to the coupler;

Characterized in having a.

Hereinafter, the configuration and operation of the PLC charger having a power line communication function according to the present invention will be described in detail with reference to the accompanying drawings.

2 is a diagram illustrating the use of a PLC charger according to the present invention, and FIG. 3 is an internal block diagram of the PLC charger of FIG. 2.

2 and 3, a PLC charger having a power line communication function according to the present invention includes a power plug 21 and an SMPS 22 for converting AC power from the power plug 21 into a predetermined DC power. And a serial interface 23 for supplying DC power from the SMPS 22 to the outside, input and output of data, and a DC power supply from the SMPS 22, and supplying the power plug 21. A coupler 24 that detects and receives a signal from a power line through which the signal is transmitted, receives a DC power supply from the SMPS 22, and receives a detected signal detected through the coupler 24. A PLC module 25 which performs a reception process and provides the signal through the serial interface 23 and transmits the signal transmitted through the serial interface 23 to the coupler 24 by performing a predetermined transmission process. Include.

That is, FIG. 3 is a block diagram of a PLC charger for both data transmission, and an external power outlet 21 connected to an AC power line (AC power + data transmission) and a serial interface 23 connected to a PDA. DC power + data). Inside it is a Switched Mode Power Supply (SMPS) 22 for converting AC power to DC power, a PLC module 25 for enabling power line communication, and a coupler for extracting only data signals from AC power. Coupler 24 is included. In addition, the SMPS 22 makes power supplied to the PDA through the serial interface 23 and the power used in the PLC module 25, respectively.

In addition, the interface receives power required for charging from the SMPS and serial data from the PLC module. The interface is a serial communication interface, and a power pin and a data transmission pin are separated from each other. Since each has its own interface, it needs to be manufactured to the specifications of the PDA manufacturer.

4 is an internal block diagram of the SMPS of FIG. 3. Referring to FIG. 4, the SMPS 22 includes a transformer 221 for converting AC power from the power plug 21 according to a turns ratio, and the transformer ( A first converter 222 for converting AC power from 221 to a first DC, a second converter 223 for converting AC power from the transformer 221 to a second DC, and the second converter ( And a third converter 224 for converting the DC power from 223 to a third DC, and a fourth converter 225 for converting the DC power from the second converter 223 to a fourth DC.

FIG. 5 is a block diagram of the PLC module of FIG. 3. Referring to FIG. 5, the PLC module 25 passes and amplifies a reception (RX) signal detected through the coupler 24 and transmits a signal. AFE unit 251 for passing and amplifying a transmission band to the coupler 24, and a signal converter for converting a received signal through the AFE unit 251 into a digital signal and converting transmission data into an analog signal. 252 and a destination MAC (Media Access Control) address received from the signal converter 252 to receive and process the destination MAC address, and adds a source MAC address to the data to be transmitted and transmits the signal to the signal converter 252. Transmits the received signal from the home plug MAC / PHY unit 253 and the home plug MAC / PHY unit 253 as serial data, and transmits the serial data to be transmitted to the home plug MAC / PHY unit 253. I / O interface unit 254 is provided to.

That is, FIG. 5 is a detailed block diagram of the PLC module 25, wherein the I / O interface unit 254, the home plug MAC / PHY unit 253, and the signal converter unit 252 including the ADC and the DAC are included. Chip (INT51X1), and an analog front end (AFE) module is a block for transmitting and receiving a signal, and the AFE module includes a band pass filter for frequency selection and an amplifier for amplifying a signal. The signal transmitted and received from the AFE module is connected to the power line through a coupler.

The operation of the preferred embodiment of the present invention configured as described above will be described in detail below with reference to FIGS. 2 to 5.

First, referring to FIG. 2, the PLC charger 20 according to the present invention may convert an AC power source from a power line into a DC power source to charge a portable communication device such as a PDA or a mobile phone. Data transmission and reception with another communication device such as a PC can be performed.

Referring to FIG. 3, the PLC charger of the present invention will be described in more detail. The power plug 21 is connected to an outlet connected to a power line, and a portable device such as a PDA or a mobile phone is serially connected to the PLC charger 20 of the present invention. The connection is made via the interface 23.

At this time, the SMPS 22 of the PLL charger 20 of the present invention converts the AC power from the power plug 21 into a predetermined DC power supply, such as a voltage of 5 V, 3.3 V, 1.2 V, or the like. In this case, the serial interface 23 supplies the DC power from the SMPS 22 to the outside, and performs input / output of data.

First, the coupler 24 of the PLC charger of the present invention detects and receives a signal from the power line through the power plug 21, and provides a transmission signal to the power line. In addition, the PLC module 25 receives DC power from the SMPS 22, performs a predetermined reception process on the received signal detected through the coupler 24, and provides the received signal through the serial interface 23. The signal transmitted through the serial interface 23 is provided to the coupler 24 by performing a predetermined transmission process.

Referring to FIG. 4, the SMPS 22 is described. The transformer 221 of the SMPS 22 converts the AC power from the power plug 21 according to the turns ratio, and then the first converter 222. ) Converts the AC power from the transformer 221 to a first DC, and then the second converter 223 converts the AC power from the transformer 221 to a second DC, and then a third Converter 224 converts the DC power from the second converter 223 to a third DC, and then the fourth converter 225 converts the DC power from the second converter 223 to a fourth DC. Convert.

That is, in FIG. 4, the SMPS 22 is a part for generating DC power by receiving AC power from a power line, and the transformer 221 is a part for stepping down the supplied AC power. The coarse voltage is rectified to produce 5V, then rectified again through the second and third converters 223 and 224 connected in parallel, and then 3.3V and 1.2V through the fourth converter 225 connected in parallel. do. The generated power is supplied to each part of FIG. In addition, the power in the SMPS 22 is connected to the serial interface portion as a power for PDA charging, wherein the power supply for the PDA rectifies the power passed through the transformer through the first converter 22, This supply voltage does not specify a voltage level because different PDA manufacturers use different voltage levels.

First, referring to FIG. 5, a data reception process of the PLC module 25 will be described. The AFE unit 251 of the PLC module 25 receives a reception (RX) signal detected through the coupler 24. When the band pass and amplify and provide the signal to the signal converter 252, the signal converter 252 converts the received signal through the AFE unit 251 into a digital signal and provides it to the home plug MAC / PHY unit 253. do. Next, the home plug MAC / PHY unit 253 checks and receives a destination MAC (Media Access Control) address among the received signals from the signal converter 252, and then processes the I / O interface unit 254. The data transmission process is performed by transmitting the data to the mobile communication device.

Next, referring to FIG. 5, a data transmission process of the PLC module 25 will be described. The home plug MAC / PHY unit 253 of the PLC module 25 may be connected to an I / O interface unit 254. The serial data to be transmitted is received from the portable communication device, the source MAC address is added to the data to be transmitted, and transmitted to the signal converter 252. The signal conversion unit 252 converts the transmission data provided from the home plug MAC / PHY unit 253 into an analog signal and provides it to the AFE unit 251.

In this case, the AFE unit 251 may pass and amplify the transmission signal from the signal conversion unit 252 to the coupler 24 and transmit the transmitted signal through the power line from the coupler 24.

In the present invention as described above, since the data is transmitted using the power line in the data transmission with another application as a method using the power line, no additional transmission cable is required.

According to the present invention as described above, it is possible to charge a portable device such as a PDA (Personal Digital Assistant) or mobile phone (Mobile Phone), and also to perform power line communication, thereby charging and data transmission It can be performed with the interface of, and there is an effect that enables charging and communication wherever there is a power line.

The above description is only a description of specific embodiments of the present invention, and the present invention is not limited to these specific embodiments, and various changes and modifications of the configuration are possible from the above-described specific embodiments of the present invention. It will be apparent to those skilled in the art to which the present invention pertains.

Claims (3)

In the PLC charger 20 for charging the portable communication device and performing data transmission and reception through the power line, A power plug 21; An SMPS 22 for converting AC power from the power plug 21 into a predetermined DC power; A serial interface 23 for supplying DC power from the SMPS 22 to the outside and performing input / output of data; A coupler 24 for detecting and receiving a signal from a power line through the power plug 21 and providing a transmission signal to the power line; And DC power is supplied from the SMPS 22, the received signal detected through the coupler 24 is provided through the serial interface 23 by performing a predetermined reception process, and the serial interface 23 is provided. A PLC module 25 for providing a transmission signal through the predetermined transmission process to the coupler 24; PLC charger having a power line communication function characterized in that it comprises a. The method of claim 1, wherein the SMPS (22) A transformer 221 for converting AC power from the power plug 21 according to a turns ratio; A first converter 222 for converting AC power from the transformer 221 into a first DC; A second converter 223 for converting AC power from the transformer 221 into a second DC; A third converter 224 for converting the DC power from the second converter 223 into a third DC; And A fourth converter 225 converting the DC power from the second converter 223 into a fourth DC; PLC charger having a power line communication function comprising a. The method of claim 1, wherein the PLC module 25 An AFE unit 251 for passing and amplifying a reception (RX) signal detected through the coupler 24 and for passing and amplifying a transmission signal to the coupler 24; A signal converter 252 for converting a received signal through the AFE unit 251 into a digital signal and converting transmission data into an analog signal; A home MAC for receiving and processing a destination MAC (Media Access Control) address among the received signals from the signal converter 252, adding the source MAC address to the data to be transmitted, and providing the signal to the signal converter 252. A plug MAC / PHY unit 253; And An I / O interface unit 254 for transmitting the received signal from the home plug MAC / PHY unit 253 as serial data and providing the home plug MAC / PHY unit 253 with serial data to be transmitted; PLC charger having a power line communication function comprising a.