KR101166329B1 - Data concentrator unit using a power line communication remote meter reading - Google Patents

Abstract

PURPOSE: A data concentrator unit for PLC(Power Line Communication) remote meter reading is provided to reduce the number of component by integrating two chips and to minimize maintenance costs. CONSTITUTION: An HFC(Hybrid Fiber Cable Modem) indirect election modem(30) is connected with a master data concentrator unit in order to process inspection relevant information at an FEP(Front End Processor)(20). A switching chip(40) transfers a signal from the master data concentrator unit to a slave data concentrator unit(90). A dual core one-chip(50) is connected with the switching chip. The dual core one-chip communicates with the slave data concentrator unit through PLC upper end communication chip(52). A PLC dual CPU(80) stores information received through the HFC indirect election modem in a memory(81) and controls one chip connected with the dual core one chip.

Description

Data concentrator unit using a power line communication remote meter reading}

According to the present invention, by configuring the functions of the remote meter reading PLC modem and trunk network modem into one chip dual, one chip functions as a master modem and the other function as trunk network modem. By separating the frequency communication band (2 ~ 23MHz) into two to use differently from each other, one function can implement two functions conventionally used, and by integrating two chips into one chip, two on one chip By designing a DUAL CPU with a function to form a data concentrator unit (DCU), the number of parts used can be reduced, thereby reducing costs and improving reliability of electronic parts due to the reduction of parts. Minimize the efficiency and maintenance management cost of the remote metering and transformer management system. By adding functions, it is possible to integrate and manage existing independent management, and by adding complex functions to one chip, master the program according to the chip of PLC modem used in the existing remote metering and transformer management system. Increasing the memory capacity of the program that manages various programs due to various program types such as modem, trunk network modem, repeater PLC, power meter G-TYPE PLC modem, and E-TYPE modem It can increase the convenience of production and maintenance of the system, and it can be operated by using a separate channel to avoid the communication collision. Also, there is no interference of the channel even when the network is separated. It can be designed so that it can be designed so as not to be used. This is a technology for data concentration device for remote reading of PLC (PLC) that can integrate with other systems such as distribution automation system or cantilever management system that are used separately.

Recently, a system that periodically reads the usage of the low-voltage consumer's electricity meter using PLC (Power Line Communication) communication and transmits meter reading data collected from the data intensive unit (DCU) to the upper stage periodically or at the request of the server. In addition, the data concentrator (DCU) periodically transmits data using a HFC modem (Hybrid Fiber Cable Modem), a D-TRS modem, or a CDMA modem, which is a transmission device for communication to a higher level. Slave device amplifies the modulated signal from the chip without PLC on the communication line by using PLC modem and uses the information collected from the electricity meter and the information collected from the transformer by using wired communication using coaxial cable. It is applied to meter reading.

In other words, the DCU of the remote metering system used by KEPCO and using low voltage PLC (Power Line Communication) communication operates a PLC modem chip used for communication for remote metering. The PLC modem chip used in the data intensive unit (DCU) is a PLC chip for communication between the meter reading MASTER chip that communicates with the home electricity meter and the FEP (front end preprocessor) device. It is a configured state.

However, because the master PLC modem which reads the electricity meter and the main network PLC modem which reads the reading data of the Slave Data Concentrator (DCU) from FEP are used separately, two identical PLC chips are used in one data concentrator. In addition, since the functions must be implemented separately, the cost and the difficulties of maintenance and management due to the installation and operation caused by the increase in the number of parts and the increase in the number of parts are occurring.

Therefore, by integrating two chips into one chip, designing a dual CPU with two functions on one chip, constructing a data intensive unit (DCU) to reduce the number of parts used and to reduce the cost and the number of parts. It is possible to improve the reliability of electronic components according to the system, thereby minimizing the occurrence of failures, thereby minimizing the efficiency and maintenance management cost of the remote metering and transformer management system. In addition, it is possible to integrate and manage the existing independent management by designing, and in designing the PLC chip, by designing the communication port multiplely, other systems such as the existing distribution automation system or cantilever management system that are separately used. Is urgently needed to develop a data concentrator for PLC remote meter reading that can integrate the system It is true.

Accordingly, the present invention was conceived to solve the above problems, and by configuring the functions of the remote metering PLC modem and the trunk network modem into one chip dual, one chip functions as a master modem and the other Is a function of trunk line modem. At this time, the frequency communication band (2 ~ 23MHz) used is separated into two to use differently, and one chip can implement two functions conventionally used by one chip (PLC) remote. Its purpose is to provide a data concentrator for meter reading.

Another object of the present invention is to integrate two chips into one chip to design a DUAL CPU having two functions on one chip to configure a data concentrator unit (DCU), thereby reducing the number of parts used. As it can reduce the cost and improve the reliability of electronic parts due to the reduction of the number of parts, it is possible to minimize the occurrence of failures, thereby minimizing the efficiency of the remote reading and transformer management system and the maintenance management cost. To provide a data concentrator.

Another object of the present invention is to add a meter reading function and trunk line communication function of two power meters in one CPU, data concentrator for PLC remote meter reading can be managed by integrating the existing independent management To provide.

Another object of the present invention is to add a complex function to one chip, the program according to the chip of the PLC modem used in the existing remote metering and transformer management system master modem, trunk line modem, repeater PLC, power meter G-TYPE It is possible to increase the memory capacity of the program and to manage various programs as one, which is difficult to manage due to various program types such as PLC modem and E-TYPE modem. To provide a data concentrator for remote PLC reading.

Another object of the present invention is to use a separate channel in order to avoid the collision of communication, as well as the network is separated because there is no interference of the channel, which can be designed so as not to think of channel confusion, PLC) to provide a data concentrator for remote meter reading.

Another object of the present invention is to design a PLC chip in the communication port (multi) by designing a multi (multi) communication system and other integrated systems, such as a distribution automation system or cantilever management system that is being used separately PEL that can integrate the system To provide a data concentrator for remote telemetry (PLC).

The data concentrator for PLC remote meter reading according to a preferred embodiment of the present invention for achieving the above object is HFC connected to the master DCU to process the meter-related information in the FEP (FRONT END PROCESSOR) in the server and then communicate (Hybrid Fiber Cable Modem) trunk line modem; A switching chip configured to transfer a communication connection signal from the master DCU to the slave DCU in the HFC trunk network modem; Connected to the switching chip, the information transmitted to the master DCU by the TCP / IP communication protocol is stored, and then the information communicated through the PLC metering chip is metered into the electricity meter through the analog upper end (AFE) circuit and the three-phase coupler A dual core One chip which transfers the measured value and the metering data required by the upper stage and communicates with the slave DCU through the PLC upper stage communication chip; The CPU is connected to the switching chip, and stores the information received through the HFC trunk network modem in the memory and controls the one chip connected to the dual-core One chip to take care of the meter-related information, and for the upper end communication with the slave A PLC dual CPU configured as a CPU for controlling another chip to be in charge of communication with a higher stage; .

In the present invention, the PLC dual CPU should have an MII communication function for communication and an Ethernet port for LAN communication, should have at least two UART communication ports for external debugging, and has two PLC communication channels. At least one channel must be capable of communicating with the PLC modem of the meter, and the other channel has the capability to communicate with the FEP via an HFC modem connected to the master DCU. do.

In the present invention, in order to design the PLC metering chip and the PLC upper-end communication chip to design a communication port multi (multi) other systems, such as the existing power distribution automation system (FRTU) or cantilever management system that is used separately It is characterized in that it includes the ability to integrate with the system.

In the present invention, the dual-core one chip is characterized in that it has two functions in one chip for the master PLC modem meter reading, and the trunk line modem PLC chip for FEP communication.

PLCC remote reading data concentrator according to the present invention has the following effects.

First, the present invention configures the functions of the remote meter reading PLC modem and trunk network modem as one chip dual, so that one chip functions as a master modem and the other function as trunk network modem. By using two different frequency communication bands (2 ~ 23MHz) to use differently, one chip can implement two functions conventionally used.

Second, the present invention integrates two chips into one chip to design a dual CPU having two functions on one chip to configure a data concentrator unit (DCU), thereby reducing the number of parts used and reducing the cost. In addition to savings, it is possible to improve the reliability of electronic parts by reducing the number of parts, thereby minimizing the occurrence of failures, thereby minimizing the efficiency and maintenance management cost of the remote metering and transformer management system.

Third, the present invention adds two meter reading functions and trunk line communication function to a single CPU, thereby integrating and managing existing independent management.

Fourth, the present invention adds a complex function to one chip, the program according to the chip of the PLC modem used in the existing remote metering and transformer management system master modem, trunk line modem, repeater PLC, power meter G-TYPE PLC modem In addition, it is possible to increase the memory capacity of the program and to manage the various programs as one, which is difficult to manage due to various types of programs according to the E-TYPE modem.

Fifth, the present invention can be designed to operate using a separate channel in order to avoid the collision of communication, and of course, even if the network is separated, there is no interference of the channel, it is possible to design so as not to consider the channel cross-talk.

Sixth, the present invention is designed in conjunction with other systems, such as a feeder remote terminal unit (FRTU: Feeder Remote Terminal Unit) or cantilever management system that uses a separate communication port in the design of the PLC chip (multi) Can be integrated.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a view illustrating a relationship with a system to which a data concentrator for PLC remote reading according to an embodiment of the present invention is applied.
2 is a diagram illustrating a configuration of a data concentrator for PLC remote reading according to an embodiment of the present invention.

Looking at the preferred embodiment of the present invention together with the accompanying drawings as follows, when it is determined that the detailed description of the known art or configuration related to the present invention may unnecessarily obscure the subject matter of the present invention The description will be omitted, and the following terms are terms defined in consideration of functions in the present invention, which may vary according to intentions or customs of users or operators, and the definitions thereof are data for remote telemetry of the present invention. It should be made based on the content throughout this specification describing the concentrator.

FIG. 1 is a view illustrating a relationship with a system to which a data concentration device for remote reading of a PLC (PLC) according to an embodiment of the present invention is applied, and FIG. (PLC) A diagram showing the configuration of a data concentrator for remote meter reading.

As shown in FIG. 1 and FIG. 2, the data concentrator 100 for the PLC remote reading of the present invention processes the metering related information in the FEP (FRONT END PROCESSOR) 20 at the server 10. A hybrid fiber cable modem (HFC) trunk line modem 30 connected to the master DCU for communication; A switching chip (40) for transmitting a communication signal from the master DCU to the slave DCU (90) in the HFC trunk network modem; Connected to the switching chip, the information transmitted to the master DCU by the TCP / IP communication protocol is stored, and the information communicated through the PLC metering chip 51 is the analog upper end (AFE) circuit 60 and the three-phase coupler A dual core One chip 50 which transmits the metered value and the reading data required at the upper end to the electricity meter 110 through 70 and communicates with the slave DCU via the PLC upper end communication chip 52; CPU which is connected to the switching chip and stores the information received through the HFC trunk network modem in the memory 81 and controls one chip connected to the dual core One chip to take care of metering related information, and an upper stage with the slave. A PLC dual CPU 80 configured as a CPU for controlling another chip to be in communication with a higher end for communication; It consists of.

The function of each technical means constituting the PLC remote reading data concentrator is as follows.

The hybrid fiber cable modem (HFC) trunk network modem 30 is connected to the master DCU to process the meter-related information in the server 10 10 FEP (FRONT END PROCESSOR) 20 and then communicate.

The switching chip 40 transfers a signal connected in communication with the HFC trunk network modem 30 from the master DCU to the slave DCU 90.

The dual core One chip 50 is connected to the switching chip 40, and the information transmitted to the master DCU by the TCP / IP communication protocol is stored, and then the information communicated through the PLC meter chip 51 is analog higher. It transfers the metered value and meter reading data required by the upper level through the AFE circuit 60 and the three-phase coupler 70 and the slave DCU through the PLC upper level communication chip 52. To communicate with 90.

Here, the dual core One chip 50 has two functions in one chip: a master PLC modem meter reading and a trunk line modem PLC chip for FEP communication. In addition, in order to design the PLC metering chip 51 and the PLC upper end communication chip 52, the communication port is designed to be multiple, and the existing distribution automation system (FRTU) 120 or an idle management system that is separately used. The system can be integrated with other systems such as

The PLC dual CPU 80 is connected to the switching chip 40, and stores the information received through the HFC trunk network modem 30 in the memory 81 and is connected to the dual core One chip 50. It consists of a CPU that controls the chip to take care of the meter-related information, and a CPU that controls the other chip to take charge of communication with the upper end for the upper end communication with the slave.

Here, the PLC dual CPU 80 should have an MII communication function for communication and an Ethernet port for LAN communication, should have at least two UART communication ports for external debugging, and have two PLC communication channels. One channel has the function of communicating with the PLC modem of the electricity meter, and the other channel has the function of communicating with the FEP through the HFC modem connected to the master DCU. In addition, the function for PLC communication may be used by dividing channels, or when a separate inverted network configuration is made, the channels may be operated without dividing the channels.

The basic operation of the PLC remote meter reading data concentrator 100 is as follows.

The server 10 processes the metering related information in the front end processor (FEP) 20 and then connects to the master DCU to communicate via the HFC trunk network modem 30.

Thereafter, the communication connection signal from the HFC trunk network modem 30 is transferred from the master DCU to the slave DCU 90 in the switching chip 40. The master modem collects information about the connection status of the electricity meter, that is, the PLC network configuration, transmits the information to the DCU network management program, transmits network information to the DCU, and collects meter-related information. For cost reduction, only one master DCU is connected to HFC modem which is trunk network modem, and slave DCU is separated to operate master and slave using PLC trunk network modem.

Thereafter, the information transmitted to the master DCU by the TCP / IP communication protocol is stored in the dual core One chip 50 connected to the switching chip 40, and then the information communicated through the PLC metering chip 51 is the analog upper stage. (AFE) transfers the metered value and the metering data required by the upper end through the circuit 60 and the three-phase coupler 70 and the metering data required by the upper end, and slave DCU ( 90). In addition, the PLC dual CPU 80 connected to the switching chip 40 stores the information received through the HFC trunk network modem 30 in the memory 81 and one chip connected to the dual core One chip 50. This control is responsible for the meter-related information, and the other chip to control the communication with the upper end for the upper end communication with the slave.

Therefore, by integrating two chips into one chip, designing a dual CPU with two functions on one chip to construct a data centralized unit (DCU), reducing the number of parts used and reducing costs The reliability of electronic parts can be improved, minimizing the occurrence of failures, thereby minimizing the efficiency and maintenance management cost of the remote metering and transformer management system, and providing two meter readings and trunk line communication function in one CPU. In addition, it is possible to integrate and manage existing independent management, and in designing PLC chip, by designing communication port in multi and other system such as existing distribution automation system or cantilever management system. The system can be integrated by interlocking.

As described above, various substitutions, modifications, and changes can be made by those skilled in the art without departing from the technical spirit of the present invention, and thus, the embodiments and the accompanying drawings are limited. It doesn't happen.

The application range of the data concentrator for PLC remote meter reading as described above will be applicable to the fields of power transmission and distribution as well as power generation.

10: server 20: FEP
30: HFC trunk modem 40: switching chip
50: dual core One chip 51: PLC meter chip
52: PLC high level communication chip 60: analog high level (AFE) circuit
70: 3-phase coupler 80: PLC dual CPU
90: slave DCU 100: data concentrator
110: power meter 120: distribution automation system

Claims (4)

In the data concentrator for PLC remote reading,
A hybrid fiber cable modem (HFC) trunk modem connected to a master DCU for processing meter-related information in a front end processor (FEP) at a server and then communicating with the master DCU; A switching chip configured to transfer a communication connection signal from the master DCU to the slave DCU in the HFC trunk network modem;
Connected to the switching chip, the information transmitted to the master DCU by the TCP / IP communication protocol is stored, and then the information communicated through the PLC metering chip is metered into the electricity meter through the analog upper end (AFE) circuit and the three-phase coupler A dual core One chip which transfers the measured value and the metering data required by the upper stage and communicates with the slave DCU through the PLC upper stage communication chip;
The CPU is connected to the switching chip, and stores the information received through the HFC trunk network modem in the memory and controls the one chip connected to the dual-core One chip to take care of the meter-related information, and for the upper end communication with the slave A PLC dual CPU configured as a CPU for controlling another chip to be in charge of communication with a higher stage; PLC data (PLC) remote metering data concentrator comprising a. The method of claim 1,
The PLC dual CPU must have MII communication function for external communication and Ethernet port for LAN communication, have at least two UART communication ports for external debugging, and have at least two PLC communication channels. One channel communicates with the PLC modem of the electricity meter, and the other channel communicates with the FEP via an HFC modem connected to the master DCU. Data concentrator for remote meter reading. The method of claim 1,
In order to design the PLC metering chip and PLC upper level communication chip, the communication port is designed to be multi and integrated with other systems such as the existing Distribution Automation System (FRTU) or Cantilever Management System. A data concentrator for remote reading of a PLC, characterized in that it can be. The method of claim 1,
The dual-core one chip has two functions, one for the master PLC modem meter reading, and a trunk line modem PLC chip for FEP communication in one chip, characterized in that a PLC remote meter reading data concentrator.

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