KR100885185B1 - Method for data relay using the power line communication controller - Google Patents

Abstract

 The present invention relates to a data relay method using a power line communication controller that allows the communication of data input / output through a plurality of communication power lines is performed by a single chip microprocessor, so that communication power lines having different phases or voltages of power can be mixed. will be.

The power line communication controller of the present invention for this purpose is a power line communication controller comprising a communication power line, an input signal from the communication power line and an output signal to the communication power line, and composed of a power line communication modem IC, and the communication power line and power line communication controller. A plurality of powerline communication modules configured with a powerline interface for connecting; Controls each power line communication module and sequentially checks the data input through each power line communication module and outputs the input data to the remaining power line communication modules except for the corresponding power line communication module to support communication standards of a plurality of communication power lines. Including a central processing unit, various sensor terminal devices and control devices are connected and includes a plurality of communication modules controlled by the central processing unit to perform data input and output between each communication module at the same time.

Multi Communication Channel, USB, Repeater, Power Line Communication

Description

Data relay method using power line communication controller {METHOD FOR DATA RELAY USING THE POWER LINE COMMUNICATION CONTROLLER}

1 is a block diagram of a power line communication controller according to an embodiment of the present invention.

2 is a circuit diagram of an embodiment of a power line communication controller according to the present invention;

3 is a flowchart illustrating a relay method using a power line communication controller according to an embodiment of the present invention.

4 is a waveform showing a data communication result between a power line communication controller and a PC according to the present invention;

<Description of the symbols for the main parts of the drawings>

1: power line communication module

    11: communication power line

    12: power line communication controller (PLC controller)

    13: powerline interface

2: central processing unit

3: communication module

    31: USB controller

    32: RS-232C interface

    33: RS-485 interface

4: power supply

5: power line communication status display device

6: communication status display device

The present invention relates to a data relay method using a central processing unit, and more particularly, a relay of data input / output through a plurality of communication power lines is performed by a single chip microprocessor, so that communication power lines having different phases or voltages of a power source are used. The present invention relates to a data relay method using a power line communication controller that can be used interchangeably.

In modern society, various digital devices, various communication methods, and many data protocols are being developed.

In power line communication, if there is a transformer in the power line or the phase of the power source is different or the voltage of the power line is different, there is a problem that communication connection is not made or impossible, and long distance communication is difficult.

In addition, recently, since various communication connection modules, such as a home automation system, are used in a single network, a necessity of a method of integrating and using communication modules between various heterogeneous or homogeneous devices is increasing.

In addition, PCs, various sensor module devices, USN (Ubiquitous Sensor Network) devices, such as devices having a different communication method has a disadvantage that can not be used mixed.

For this reason, when power line communication is different or power line communication is not possible with a transformer or the like, it is intended to extend the communication distance by using a condenser or a complex passive element, but there is a limit. In addition, in order to interface different types of communication, there is a problem in that the interface modules must be installed individually.

Accordingly, there is a need for further development of a repeater that allows a plurality of communication channels to be used mixed without a communication error.

An object of the present invention for solving the problems according to the prior art is to relay the data input and output through a plurality of communication power lines by a single-chip microprocessor, it is possible to use a power line for communication with different phases or voltages of power A data relay method using a power line communication controller is provided.

In addition, the present invention by using a single-chip microprocessor relays data input and output of a plurality of communication modules to which not only communication power lines but also various sensor terminal devices and control devices are connected to support a plurality of communication standards, different communication standards It is to provide a data relay method using a power line communication controller to enable data relay and transmission between the communication module having.

In the data relay method using the power line communication controller of the present invention for solving the technical problem, the output of the data by sequentially checking the data input through a communication module consisting of a plurality of power line communication modules and a plurality of communication modules to control the output of the data A relay method using a power line communication controller including a central processing unit, comprising: a first step of checking whether data input is made to one of communication modules; If data is input through the corresponding communication module, transmitting the input data to a communication module except for the corresponding communication module to output data; A third step of checking whether data input through the corresponding communication module is maintained; A fourth step of maintaining transmission to other communication modules except for the corresponding communication module when data input through the corresponding communication module is maintained; A fifth step of stopping data transmission and checking whether data input is made through a subsequent communication module if data input is not maintained through the corresponding communication module; And repeating the second to fifth steps sequentially.

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The invention will become more apparent through the preferred embodiments described below with reference to the accompanying drawings. Hereinafter will be described in detail to enable those skilled in the art to easily understand and reproduce through embodiments of the present invention.

1 is a configuration of a power line communication controller according to an embodiment of the present invention, the present invention comprises a plurality of power line communication module 1 and the central processing unit (2, CPU).

Each power line communication module 1 amplifies an input signal from the communication power line 11, an input signal from the communication power line 11 and an output signal to the communication power line, and a power line communication controller 12 composed of a power line communication modem IC for communication. The power line interface 13 connects the power line 11 and the power line communication controller 12.

Here, the power line interface 13 is made of a combination of an impedance matching transformer, a capacitor, and a coil, although not specifically illustrated in the drawing, to connect the communication power line 11 and the power line communication controller 12. And a band pass filter (BPF) for filtering the frequency.

In addition, the CPU 2 controls each power line communication module 1 and sequentially checks data input through each power line communication module 1, and checks the input data for the remaining power line communication module except for the corresponding power line communication module. It supports the communication standard of a plurality of communication power lines by controlling the output.

Here, the present invention preferably further includes a plurality of communication modules 3 connected to various sensor terminal devices and control devices and controlled by the central processing unit 2 to simultaneously perform data input / output between each communication module.

At this time, the plurality of communication modules are composed of a USB controller 31 composed of a USB communication control dedicated IC supporting USB communication, and a plurality of communication interfaces 32 composed of a dedicated IC for interfacing each communication level. Since each communication module is used in conjunction with the USB controller 31 or the communication interface 32, it is possible to connect various USN (Ubiquitous Sensor Network) devices to apply to the ubiquitous environment.

In addition, a number of communication interfaces are already known, for example, RS-232C interface 321 consisting of a dedicated IC to interface the RS-232C communication level, RS consisting of a dedicated IC to interface the RS-485 communication level -485 interface 322 and the like.

In addition to this, it is obvious that the present invention includes a power supply 4 for supplying power throughout the device. The power supply 4 converts the primary power of AC 220V into DC 5V and DC 10V to supply DC 5V as the operating power of the entire circuit and DC 10V to the input / output signal amplification circuit of the PLC controller.

In addition, the present invention provides a PLC status display device 5 for displaying the data transmission and reception status of the power line communication controller 12 through the LED, and the data transmission and reception status of each device constituting the communication module 3 through the LED The communication status display apparatus 6 may further be provided.

2 is a circuit diagram of an embodiment of a power line communication controller according to the present invention.

Referring to the figure, since the repeaters support different communication schemes, they must have a chipset in charge of the corresponding communication protocol.

For example, the chip for the USB module uses CYGNAL's CP2101 chip. The CP2101 chip is a single-chip USB to UART DATA TRANSFER that converts the USB signal into a universal asynchronous receiver / transmitter (UART). The chip features no external resistors and an internal clock that eliminates the need for an external crystal. Vendor ID, Product ID, Serial Number, Power Descriptor, Release Number, and Product Description Strings are stored in EEPROM. In addition, it supports USB 2.0 and has a transmission speed up to Full Speed (12Mbps).

The chip for the RS232 communication module uses MAX232 made by Texas Instrument, and the chip for the RS485 communication module uses SN75178B chip made by Texas Instrument.

The power line communication (PLC) modem uses the TDA5051 chip from PHILIPS, which is mainly used in home applications (air conditioners, shutters, lights, alarms, etc.) and these devices do not use other communication lines, but only power lines. Can be controlled. In addition, a home power line network can be configured by using an amplitude shift keying (ASK) transmission method.

In the exemplary embodiment of the present invention, two TDA5051s have a function of allowing the modems to configure POWER LINEs A and B to transmit data received from different power lines to another power line.

And ATEL AT89C2051 was used as a microcontroller to control these communication chips. The controller is an 8-bit Microcontroller with a 2KByte programmable flash memory in the 8051 series. This flash memory can be written and erased more than 1000 times. It has 15 programmable I / O lines and two 16-bit timers and counters. It also has an analog comparator, LED driver and programmable Serial UART channel. The function of the controller in this data repeater is to play an important role in checking the data received by each communication chip and transferring the data to other communication methods.

The data relay method using the multi-communication channel repeater includes a power line including a plurality of power line communication modules and a central processing unit which sequentially checks data input through a communication module composed of a plurality of communication modules and controls the output of the data. A relay method using a communication controller, comprising: a first step of checking which data is input into one of a communication module; If data is input through the corresponding communication module, transmitting the input data to a communication module except for the corresponding communication module to output data; A third step of checking whether data input through the corresponding communication module is maintained; A fourth step of maintaining transmission to another communication module when data input through the corresponding communication module is maintained; If the data input is not maintained through the corresponding communication module, the step of stopping the data transmission and checking whether data input is made through the subsequent communication module and repeating the second to fifth steps sequentially Is done.

In more detail, first, as shown in FIG. 3, when a USB module is checked and data is input through USB, the data is transmitted to power line communication modules such as RS232C, RS485, PLC1, and PLC2, which are other communication modules except the USB module. Let data output through communication module except USB module.

If the data is still maintained by checking the USB again, the data output of the other communication channel is maintained.

Next, if the USB is not checked and data is not input, the outputs of other communication channels RS232, RS485, PLC1, and PLC2 are turned off at the same time, and then the input of the subsequent communication module RS232C is checked.

After checking USB at the beginning, RS232C, RS485, PLC1, and PLC2 data inputs are checked in sequence, and once the data input check of 1 wheel is completed, the input check is repeated from USB again to input data to a specific communication module. If this is done, the data is transmitted to the remaining communication modules except for the communication module in which data is input, and then the check starts again from the corresponding communication module in which the data is input.

By repeating this series of processes, data input for all communication modules is checked to ensure that data is output to the remaining communication modules except for the corresponding communication module.

In addition, the conventional central processing unit controls the terminal load device by receiving an input using a keypad, but the central processing unit of the present invention uses a PC to determine whether the terminal load device is operated and the value measured by the sensor provided in the device. By transmitting to the PC in real time, the control and status of the terminal load device can be checked through the graphic window of the GUI on the PC.

4 is a waveform illustrating a result of data communication between a power line communication controller and a PC according to the present invention, the left side of which is data output from the RS232 side, and the right side of which is a data waveform output through the PC.

In other words, after connecting the repeater and the PC by USB and transmitting the data by USB, the data result from the RS232 side and the result waveform when the corresponding data is output to the PC line are shown.

As a result, it can be seen that the same data is output after being modulated for each communication method.

As described above, the present invention outputs data input through a plurality of communication modules through the remaining communication modules except for the corresponding communication module, so that data monitoring and control at the PC can be performed simultaneously with data relay between a plurality of communication standards.

Accordingly, by connecting various sensor module devices and other control devices through a plurality of communication modules, the USN (Ubiquitous Sensor Network) devices can be connected to each other to be used in a ubiquitous environment.

As described above, the present invention allows a single chip microprocessor to relay data input / output through a plurality of communication power lines so that a single device can be used in various ubiquitous environments by using a communication power line having a different phase or voltage from a power source. It is possible to improve the efficiency by enabling data relay.

In addition, the present invention by using a single-chip microprocessor relays data input and output of a plurality of communication modules to which not only communication power lines but also various sensor terminal devices and control devices are connected to support a plurality of communication standards, different communication standards There is an advantage to enable data relay and transmission between communication modules having.

Although the present invention has been described with reference to the accompanying drawings, it will be apparent to those skilled in the art that many different and obvious modifications are possible without departing from the scope of the invention from this description. Therefore, the scope of the invention should be construed by the claims described to include many such variations.

Claims (4)

delete delete delete A relay method using a power line communication controller comprising a plurality of power line communication modules and a central processing unit to sequentially check the data input through a communication module consisting of a plurality of communication modules to control the output of the data, Checking a data input to one of the communication modules; If data is input through the corresponding communication module, transmitting the input data to a communication module except for the corresponding communication module to output data; A third step of checking whether data input through the corresponding communication module is maintained; A fourth step of maintaining transmission to other communication modules except for the corresponding communication module when data input through the corresponding communication module is maintained; A fifth step of stopping data transmission and checking whether data input is made through a subsequent communication module if data input is not maintained through the corresponding communication module; And repeating the second to fifth steps sequentially.

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