KR100980289B1 - Automatic meter reading system equipped dlms using binary cdma technology - Google Patents

Abstract

PURPOSE: An automatic meter reading system equipped DLMS using a binary CDMA technology is provided to efficiently perform remote inspection. CONSTITUTION: A remote metering terminal(120) does not include an additional CPU and use a CPU core inside a binary CDMA modem chip. A flash memory includes DLMS, a firewall program, and a storage area storing a boot code. A multi port is formed in the binary modem chip of a collecting device(400). The binary CDMA modems are connected one to plural through a CDMA communication network. The collecting device acquires power metering information from households.

Description

Automatic meter reading system equipped DLMS using binary CDMA technology

The present invention relates to a remote meter reading system using a binary CDMA technology equipped with a DLMS, and more particularly, by applying a binary CDMA technology having advantages in transmission speed, transmission distance, data processing capacity, etc. The present invention relates to a remote meter reading system using binary CDMA technology equipped with a DLMS that enables efficient and efficient meter reading.

More specifically, in the remote meter reading system, the DLMS standard is applied to the remote meter reading terminal to perform scheduling of the meter reading itself, to store and manage the metered data, and to transmit the data to a higher level. It is about.

In the intelligent remote meter reading field, the global market is expected to reach about 120 trillion won in the next 10 years, and the domestic market is estimated to be about 1.3 trillion won. Accordingly, the development of low cost, high performance remote metering technology is an area of interest to many countries and enterprises.

Currently, the remote meter reading for the electricity meter being proposed or developed in Korea is mainly used a wire communication method such as a telephone line or a power line communication method, or a wireless communication method such as a zigbee or RF communication method.

However, in the case of the wired communication method, it has the advantage that it can perform additional services, etc., because of its high speed and large data processing capacity, but it has a limitation of convenience of installation and operation of the wired communication method, and a wireless communication method such as an RF communication method. Is relatively weak in transmission speed, transmission distance and data processing capacity.

Therefore, while solving the problems of the conventional wired or wireless communication method as described above, there is a need for the development of a new remote metering technology that can perform the construction and operation of the system economically and efficiently.

Thus, Koinonia is currently under study. Koinonia is a high-speed wireless personal network (WPAN) technology developed to connect and communicate with short-range devices wirelessly. Koinonia's physical layer is based on binary CDMA, and the data link layer is composed of a media access control (MAC) layer and an adaptation layer. The physical layer using Koinonia's phase modulation method and multi-code spread spectrum technology provides strong noise resistance and freely adjustable bandwidth, and the data link layer guarantees the quality of service for each traffic characteristic. It supports multimedia services such as voice and video.

The scope of the Koinonia standard extends the Physical Layer (PHY) and Data Link Layer (Data) to create a high-speed data transmission network between fixed, portable, and mobile devices that enter internally or externally to personal operating spaces. link layer) Defines the protocol specification.

Koinonia is based on an ad hoc network that can be configured without a network infrastructure. The devices participating in the Koinonia network are divided into master and slave according to their role, but all stations can act as master and slave, and they select the master according to the situation and configure the network according to the situation without the help of a separate network infrastructure. Free network configuration is possible with only the devices.

In a personal wireless network, the number of devices joining the network varies considerably with time due to the channel conditions in the wireless environment and the operation of the personal mobile devices. This also affects the bandwidth and delivery delay time allocated to each device, making it difficult to support real-time multimedia traffic services that require a certain level of service quality. In Koinonia, a station of a network becomes a master and allocates and manages resources to manage network connection quality for each traffic.

In addition, Koinonia has advantages such as noise resistance and fine and flexible resource allocation by using binary CDMA technology. First of all, binary CDMA has a high noise resistance inherent in CDMA technology, which can be an excellent feature in a very noisy wireless network environment unlike wired. In addition, bandwidth can be adjusted in units of code according to the characteristics of binary CDMA, enabling flexible and detailed resource allocation.

On the other hand, the global power market is being divided into transmission and distribution fields, and the power supplier is also liberalizing and opening up in the past monopoly. This trend has resulted in a complex and competitive aspect in which different users consume different sources of energy from different power providers. In such an environment of diversity, stable data access is required selectively. Therefore, interoperability in the data access process is problematic. In other words, for remote meter reading and smart metering, data must be freely transferred between heterogeneous manufacturers and heterogeneous devices as well as easily accessible.

DLMS (Device Language Message Specification) is a remote model that defines various data handled by the meter as logical objects for the purpose of ensuring mutual compatibility, defines data messages with standardized data structures, and defines the transmission methods for various transmission media. Refers to international standard for meter communication protocol. The international standard of DLMS was started from the international standard IEC 61107 (FLAG) and IEC 61334-4-41 (Distribution Line Messaging Specification), and its use range is widely applied to the field of metering such as water and gas metering as well as the electric field. have.

In the conventional remote meter reading system, since the DLMS module is mounted in the collecting device, the collecting device has to collect the meter data from the electricity meter, control the data transmission / reception process with the upper end, and process the DLMS protocol. Due to the nature of the DLMS protocol, there is a problem in that the transmission rate decrease or the response time delay due to the bottleneck or the surrounding wireless environment causes the meter connection to be disconnected.

The present invention devised to solve the above problems is to apply a binary CDMA technology having advantages in transmission speed, transmission distance and data processing capacity to the remote meter, DLMS to enable more economical and efficient remote meter for the meter An object of the present invention is to provide a remote meter reading system using the binary CDMA technology.

Furthermore, by applying the DLMS standard on the remote meter reading terminal, the meter reading scheduling is performed by the remote meter reading terminal itself, the meter reading data is stored and managed, and the remote meter reading system can be transmitted to a higher level. It aims to provide.

The present invention for achieving the above object is, a remote meter reading terminal connected to the electricity meter formed in each customer to obtain the power meter reading information and transmits through a binary CDMA communication network; A repeater formed on the binary CDMA communication network to transfer data transmitted from the remote meter reading terminal; A collection device for receiving, collecting and storing power metering information from the repeater, and transmitting the stored power metering information at predetermined intervals; Wired and wireless communication network for transmitting the data collected by the collection device; And a metering server that receives, records, and stores power usage data for each electricity meter from the wire / wireless communication network, and charges a power usage fee for the corresponding electricity meter, wherein the meter is formed in the remote meter reading terminal. Flash memory is divided into DLMS, firewall program, and boot code storage area. The DLMS includes active power, load profile, HDLC setup, COSEM meter identifier, customer meter ID, manufacturer meter ID, active power meter constant, and load profile. Provided is a remote meter reading system using binary CDMA technology equipped with a DLMS characterized in that the metering interval is read.

Preferably, the flash memory is characterized in that the DLMS is mounted therein by a flash writing technique.

In addition, the electricity meter is characterized in that the E-type electricity meter is a compact version (Compacted) DLMS application.

In addition, the data communication between the collection device and the metering server is primarily through a broadband backbone network including an optical communication network or a CATV network, and secondly through a binary CDMA communication network in an uninstalled area of the broadband backbone network. It is done.

In addition, when the remote metering is not performed using the collection device, it is characterized in that to collect the data collected through the DLMS from each remote metering terminal using an emulator.

The present invention can improve the transmission speed, transmission distance, data processing capacity and the like compared to the wired / wireless communication schemes which are generally used in the past by applying binary CDMA technology to the remote meter reading field. Therefore, it is possible to implement a more economical and efficient remote meter reading system, thereby creating economic effects by preoccupying the domestic and overseas remote meter reading market and providing various additional services.

Furthermore, by applying the DLMS standard on the remote meter reading terminal, the meter reading scheduling is performed by the remote meter reading terminal itself, the meter reading data is stored and managed, and the remote meter reading system can be transmitted to a higher level. To improve data meter success rates.

In order to fully understand the present invention, the advantages of the operability of the present invention, and the objects achieved by the practice of the present invention, reference should be made to the accompanying drawings which illustrate preferred embodiments of the present invention and the contents described in the accompanying drawings.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. Like reference numerals in the drawings denote like elements.

1 is a diagram illustrating elements constituting koinonia according to an embodiment of the present invention.

Referring to FIG. 1, the basic element in Koinonia is a station. Stations are divided into master and slave according to their roles. The master manages the entire Koinonia network and there can only be one in a network. The master controls the slave by broadcasting the beacon. The slave can transmit / receive data under the control of the master. In addition, the slave may request its requirements from the master in the contention period.

More specifically, the master transmits beacons to provide timing of Koinonia's superframes. He also manages service quality and power, or plays a role in security certification. Koinonia is configured when there are two or more stations operating on the same radio frequency channel within the personal activity area.

On the other hand, a piconet consists of a master and one or more slaves, and a multi-piconet consists of a piconet (parent piconet) and a lower piconet formed based thereon. child piconet). The lower piconet is composed of a slave master in the upper piconet and a child master and slave in the master role in the lower piconet.

The resources available in Koinonia are Code Channel in Code Division Multiple Access (CDMA) and Time Slot in Time Division Multiple Access (TDMA). In the code division access scheme, when many channels are used at the same time, the transmission rate increases, but the error rate also increases. Therefore, it is possible to actively cope with the channel environment by changing the number of code channels for transmitting data according to the channel situation. The code channel transmits data using all code channels in a good channel condition and a few channels in a bad channel environment. The time slot is managed by the master as an important resource of Koinonia, and is distributed at the request of the slaves and the judgment of the master.

2 is a schematic diagram of a remote meter reading system using a binary CDMA technology equipped with a DLMS according to an embodiment of the present invention.

As shown in FIG. 2, a remote meter reading system using a binary CDMA technology equipped with a DLMS according to an embodiment of the present invention is connected to a power meter 110 formed in a customer 100 to remotely transmit power metering information. Meter 300, a repeater 300 for transmitting the data transmitted from the remote meter terminal 120 using the binary CDMA communication network 200, a collection device for receiving and collecting power meter information from the repeater 300 400, a wired / wireless communication network 500 for transmitting data collected by the collection device 400, a metering server 600 for receiving and storing data from the wired and wireless communication network 500, and the metering server 600. DB 610 for storing the collected data and the processed data, and FEP (620).

In the remote meter reading system, the collection device 400 may operate as a master of the Koinonia network, and the remote meter reading terminal 120 formed in the electricity meter 110 of each customer may operate as a slave. Of course, depending on the transmission and reception of data or the state of the binary CDMA communication network, any one of the remote metering terminal 120 may play a master role.

The remote meter reading terminal 120 is mounted on the electricity meter 110 receives power usage data from the electricity meter, and transmits it through a binary CDMA communication scheme. The remote meter reading terminal 120 may be formed to include a memory and a modem for binary CDMA communication, and may be preferably a power meter capable of remote meter reading. That is, it is preferable that the electricity meter provided with each of the remote meter reading terminals is an E-type electricity meter which is a compact version of the Compact DLMS, which is an electronic electricity meter rather than an analog method. However, the present invention is not limited thereto and may be applied to various wattmeters including standard wattmeters according to embodiments of those skilled in the art. Detailed configuration of the remote meter reading terminal 120 will be described in more detail with reference to FIG.

The repeater 300 may be formed in plural between the binary CDMA communication network 200 in order to relay transmission data according to the binary CDMA communication method performed between the remote meter reading terminal 120 and the collecting device 400.

The collection device 400 collects and stores power usage data transmitted from the remote meter reading terminal through a binary CDMA communication scheme.

The meter reading server 600 records and preserves power usage data for each of the electricity meters transmitted from the plurality of collection devices 400, and charges the electricity usage fee for the corresponding electricity meters as necessary.

Data transmission between the collection device 400 and the meter reading server 600 may be made by any one of various conventional wired and wireless communication methods including binary CDMA, TRS, Ethernet, or optical communication. The communication modem provided in the collection device 400 is preferably an integrated modem capable of being associated with all communication methods for data transmission between the electricity meter 110 and the metering server 600.

Particularly, in one embodiment, data communication between the collection device 400 and the upper end such as the meter reading server 610 or the FEP 620 may be based on TCP / IP, and the broadband main network including the optical communication network or CATV network is not installed. In special cases such as regions, an optional binary CDMA communication scheme is available.

3 is a diagram showing the internal configuration of a remote meter reading terminal according to an embodiment of the present invention.

Referring to FIG. 3, the remote meter reading terminal 120 generates a power meter communication drive 121 connected to the electricity meter 110, and generates a control signal to control each part of the remote meter reading terminal 120 and according to the control signal. Binary CDMA modem 123 for transmitting the power information received from the electricity meter 110 using a binary CDMA communication network, RF module 124 formed between the antenna and the binary CDMA modem 123, the binary CDMA modem And a memory 125 connected to 123, a flash memory 126 connected to the binary CDMA modem 123, and a serial drive 127.

The electricity meter communication drive 121 interoperates with the electricity meter 110 to receive power metering information previously stored in a memory formed in the electricity meter 110. The power meter reading information may be current data measured through the current detector formed in the electricity meter 110, voltage data measured through the voltage detector, and power meter reading information generated by processing the current and voltage data.

The binary CDMA modem 123 stores and manages the amount of power measured by the electricity meter 110 and controls a data communication process. One feature of the above embodiment is that the CPU of the terminal reader is not formed, and the structure of the terminal can be simplified by controlling the terminal using a CPU core inside the binary CDMA modem 123 chip. The binary CDMA modem 123 receives and stores current data, voltage data, and an effective power amount, a reactive power amount, a maximum demand power, and a power factor. In some cases, this can be used to calculate the electricity use charges to be paid to the utility company by the consumer. The power usage fee calculation method may be calculated by multiplying the measured power usage by a standard fee charged for each power amount. The reference fee information may be stored and used in a memory unit such as the memory 125 or the flash memory 126. In addition, the binary CDMA modem 123 may generate statistics by dividing the measurement data by time zone, daily, weekly, monthly, nightly, and date.

In addition, the measurement device stores the received current and voltage, active power amount, reactive power amount, maximum demand power, power factor, power usage fee, and the like in a memory unit such as the memory 125 or the flash memory 126 and collects the data. Control the transmission of the stored data according to the transmission request from the 400. In addition, the binary CDMA modem 123 controls the operation of the RF module 124, controls the data input and output process of the memory 125 and flash memory 126, and controls the operation of the serial drive 127. The RF module 124, the memory 125, and the serial drive 127 may be omitted or changed according to a designer's choice, and the above description is for illustrative purposes.

In the memory 125 or the flash memory 126, power metering information such as voltage, current information, and used power amount transmitted from the electricity meter are classified into time zone, daily, weekly, monthly, night, and date. Can be stored in real time.

In more detail, the memory 125 or flash memory 126 may be divided into a program storage area and a data storage area. In the program storage area, an application program used by the binary CDMA modem 123 is stored, and in the data storage area, current and voltage data received from the electricity meter, active power, reactive power, maximum demand power, power factor, power usage fee, and the like. Measurement data and power meter reading information including a communication network connection state between the communication module, data transmission and reception completion state, and the like can be stored.

As an application program stored in the program storage area, for storing and managing measurement data such as current, voltage, active power, reactive power, maximum demand power, power factor, power usage fee, etc. received by the binary CDMA modem 123. It may include a storage management program, a communication program for controlling communication with the collection device 400 through the binary CDMA modem 123, and a program for calculating a power usage fee based on the detected power information.

In particular, the flash memory 126 may be divided into a DLMS 126a, a firewall program 126b and a bootcode 126c to prevent hacking or unauthorized intrusion from the outside. The firewall may be omitted at the choice of the skilled person.

For example, the DLMS 126a may include an active power amount, a load profile, an HDLC setup, a COSEM meter identifier, a customer meter ID, a manufacturer meter ID, and an active power meter constant. In addition, the load profile recording interval can be read. In addition, functions other than the DLMS processing function required for the terminal may include metering scheduling, meter data storage management, and meter data transmission.

The remote meter reading terminal 120 having such a configuration is installed adjacent to the electricity meter 110 formed in each customer to obtain power metering information from the electricity meter 110 and collected using the binary CDMA communication network 200. Send it to device 400. Data may be transmitted using a plurality of repeaters formed on a binary CDMA communication network according to the distance between the remote meter reading terminal 120 and the collection device 400. On the other hand, the collection device 400 and the remote meter reading terminal 120 formed in each customer can operate as a master and a slave, respectively, and can authenticate and secure each device to facilitate the data communication process. In addition, in order to improve the data transmission speed, they may be connected to each other in multiple connections. In addition, the plurality of remote meter reading terminal 120 can be upgraded in the collection device 400 at one time by using the multi-connection.

4 is a view showing the internal configuration of the collecting device according to an embodiment of the present invention.

Referring to FIG. 4, the collection device 400 includes a remote meter reading terminal 120 according to a control signal of a control unit 401, an RS232C driver 402, and the control unit 401 for controlling each unit of the collection device 400. A binary CDMA modem 403 for receiving power information from a CDMA communication network, an RF module 404 interposed between an antenna and the binary CDMA modem 403, the control unit 401, and a binary CDMA. A pair of SDRAMs 405 connected between the modem 403, a flash memory 406 connected between the control unit 401 and a binary CDMA modem 403, an RJ45 LAN connector 407 connected to the control unit 401, And a PHY chip 408 connected to the controller 401.

The control unit 401 receives, collects, stores and manages the data read through the electricity meter 110 from the remote meter reading terminal 120 formed at each customer, and controls a data communication process using the binary CDMA modem 403. do. According to an embodiment of the present disclosure, the controller 401 may receive and store an effective power amount, reactive power amount, maximum demand power, power factor, and the like through the DLMS 126a of the remote meter reading terminal 120. In some cases, the arithmetic power usage fee may be received and stored through the DLMS 126a of the remote meter reading terminal 120 and then transmitted to a higher level. As described above, the power usage fee calculation method may be calculated by multiplying the measured power usage by the standard fee charged for each power amount. The reference rate information may be stored in a memory unit such as the memory 125 or the flash memory 126 on the remote meter reading terminal 120 and then read out. In addition, the controller 401 may receive and store statistics provided by the remote meter reading terminal 120 separately for each time zone, daily, weekly, monthly, night, and date.

In addition, the measurement data such as the current, voltage, active power amount, reactive power amount, maximum demand power, power factor, power usage fee, etc. are cumulatively calculated and stored in the SDRAM 405 or the flash memory 406, and are read from the meter reading server 600. Controls the process of transmitting the stored data to the meter reading server 600 according to the transmission request. In addition, the control unit 401 controls the operation of the RF module 404, and controls the data input and output process of the SDRAM 405 and flash memory 406, RS232C driver 402, RJ45 LAN connector 407, And control the operation of the PHY chip 408.

The binary CDMA modem 403 receives the power reading information received from the remote reading terminal 120 according to the control signal of the control unit 401 and loads it into the SDRAM 405 or the flash memory 406. In addition, at the request of the meter reading server 600, the power meter reading information stored in the SDRAM 405 or flash memory 406 is transmitted to the meter reading server 600 through the wired / wireless communication network 500.

In other words, when a plurality of remote meter reading terminal 120 formed in a certain block, such as a unit area, respectively transmits the power usage data detected by the corresponding electricity meter 110, the collection device 400 receives and organizes them, and then predetermined Each period of the to perform the function of transmitting to the meter reading server 600.

At this time, when the distance between each of the remote meter reading terminal 120 and the collection device 400 is an interval that is difficult to transmit data, as shown in Figure 2, the relay of the data transmitted between them A plurality of repeaters 300 may be further formed.

In the SDRAM 405 or the flash memory 406, voltage, current information, and power reading information transmitted from the remote meter reading terminal 120 are classified into time zone, daily, weekly, monthly, night, and date. Can be stored in real time.

In more detail, the SDRAM 405 or the flash memory 406 may be divided into a program storage area and a data storage area. The program storage area stores an application program used by the control unit 401, and the data storage area includes measurement data such as received current and voltage data, effective power amount, reactive power amount, maximum demand power, power factor, and power usage fee. Power meter reading information including a communication network connection state between the communication modules and a data transmission / reception completion state may be stored.

The application program stored in the program storage area includes a storage management program for storing and managing the received current, voltage and measurement data in a memory, and the remote meter reading terminal 120 or the meter reading server 600 through the binary CDMA modem 403. ) And a communication program for performing communication.

On the other hand, the communication method between the remote meter reading terminal 120 and the collection device 400 is not out of the serial method based on a one-to-one correspondence. For this reason, the collection device does not acquire the values of other instruments until the communication with one instrument is terminated. In particular, if a problem occurs during the communication process, it is not possible to obtain the values of all the instruments connected to the collection apparatus due to retransmission of data. There is a problem of lengthening. This is a factor that reduces the quality of power information management by extending the acquisition period of the meter data, in particular, there is a problem that increases the probability of failing to acquire the value of a particular instrument, especially long periods.

In order to solve this problem, the present invention adopts a multiple access method between the remote meter reading terminal 120 and the collecting device 400, thereby acquiring power metering information from a plurality of consumers at the same time by the collecting device 400, By reducing acquisition cycles, you can improve power management quality and reduce the probability of data loss.

5 is a diagram illustrating a structure of a collecting device for connecting multiple modems according to an embodiment of the present invention.

Referring to FIG. 5, the collection device 400 is multi-connected with a binary CDMA modem 123 forming a plurality of remote meter reading terminals 120 installed in the customer 100. In more detail, a plurality of binary CDMA modems 403 are formed in the collecting device 400, and the collecting device 400 and the plurality of binary CDMA modems 403 are multi-connected. In addition, the plurality of binary CDMA modems 403 are connected to the binary CDMA modem 123 constituting the remote meter reading terminal 120 through a binary CDMA communication network 200. Through such a structure, the collection device 400 may simultaneously receive power metering information of a power meter formed in a corresponding customer from a plurality of modems.

6 is a diagram illustrating a structure of a collecting device having a modem supporting multi-ports according to an embodiment of the present invention.

Referring to FIG. 6, the collection device 400 is multi-connected with a binary CDMA modem 123 constituting a plurality of remote meter reading terminals 120 formed in the customer 100. In more detail, the binary CDMA modem 403 constituting the collecting device 400 is multi-ported through the binary CDMA modem 123 and the binary CDMA communication network 200 constituting the remote metering terminal 120 by supporting multiple ports. Connected. In addition, the binary CDMA modem 123 and the collection device 400 may transmit and receive data using a parallel serial communication method or an Ethernet method. Through such a structure, the collection device 400 may receive power metering information of a power meter formed in a corresponding customer from a plurality of modems at the same time.

By using the structure illustrated in FIG. 5 or 6, the speed of receiving power metering information from the plurality of remote metering terminals 120 can be significantly improved, and the power metering information of more consumers can be received within a limited time. Can improve the accuracy.

In more detail, the time required for data communication is reduced by the time required to divide the conventional time by the number of multi-connections.

7 is a schematic diagram of a remote meter reading system using a binary CDMA technology equipped with a DLMS according to an embodiment of the present invention.

Referring to Figure 7, the basic configuration of the remote meter reading terminal 120 and the collection device 400 is as shown in Figures 3 and 4, except that Figure 7 is a remote meter reading system according to an embodiment of the present invention In the figure, it is visually illustrated that the DLMS processing performed by the conventional collection device 400 is performed by the remote meter reading terminal 120. In the collector-based remote metering system equipped with a conventional DLMS, the electricity meter data collection and lower control were performed by the collector 400. On the other hand, in the meter reading system of the present invention, the DLMS 126a is mounted in the flash memory 126 of the remote meter reading terminal 120, and is directly mounted and connected to the electricity meter 110. As a result, the load of the DLMS 126a portion is transferred to the remote meter reading terminal 120 among the roles that the conventional collecting device 400 plays, and the remote meter reading is performed.

In more detail, the collection device 400 controls TCP / IP data communication with the FEP 620 and the meter reading server 600 through the trunk network, and the FEP 620 and the meter reading server 600 from the remote meter reading terminal 120. Control the transmission and delivery of data to the network. In addition, data communication control using a binary CDMA modem 403 or a PLC is performed, and the entire network management information is processed below the collecting device 400. For example, it performs modem MAC / status information management and electricity meter information management.

Through such a system, due to the DLMS protocol being excluded from the MCU program of the collecting device 400, which had to take care of many tasks such as electricity meter data collection and other commands processing, much of the work to be processed by the MCU is reduced. For this reason, even in the communication with the upper end (FEP) and the communication between the transmission apparatus, the error rate due to the improvement of the data transmission rate and the bottleneck, etc. can be drastically reduced, thereby increasing the meter reading processing efficiency.

In addition, the board can be designed for multi-purpose using binary CDMA and optional PLC modem.

In addition, preferably, in the remote meter reading terminal 120, the DLMS 126a is mounted in the current flash memory 126, and a system may be implemented without adding a separate cost by a flash writing technique. . In addition, it can be applied not only to the standard-type electricity meter, but also to the E_type electricity meter, which is an application version of the Compacted DLMS.

FIG. 8 is a schematic view showing a remote meter reading system using a binary CDMA technology equipped with a DLMS according to another embodiment of the present invention, and FIG. 9 is a diagram showing an exemplary system structure of the remote meter reading system shown in FIG. to be.

8 and 9, the basic configuration of the remote meter reading terminal 120 is as shown in Figure 3, except that Figure 8 is a conventional collection device in the remote meter reading system according to an embodiment of the present invention ( It is shown visually that the DLMS processing performed by 400 is performed by the remote meter reading terminal 120.

On the other hand, the remote meter reading terminal 120 is connected to the binary CDMA transmitter 700 and the binary CDMA communication network. The binary CDMA transmitter 700 receives data from the remote meter reading terminal 120 through the RF module 701, and the RF module 701 operates under the control of the binary CDMA modem master 702. The binary CDMA modem master 702 may be provided with a CDMA terminal 704 for transmitting data to a higher level in an area where no broadband backbone network is installed including an optical communication network or a CATV network. 703).

The controller 704 controls the binary CDMA modem master 702 or the TCP / IP controller 705 to control the data received from the remote meter reading terminal 120 through a binary CDMA communication network or a TCP / IP communication network. 620 or the meter reading server 600 may be transmitted. In addition, the flash memory 707 may be controlled to temporarily store the DLMS reading data transferred from the remote reading terminal 120 or read the stored data.

The TCP / IP controller 705 is connected to the Ethernet 706, the Ethernet 706 is connected to an external TCP / IP communication network to read the data read through the remote meter reading terminal 120 FEP (620) or meter reading server 600 can be transmitted. The TCP / IP controller 705 controls the data transmission process through the TCP / IP communication network according to the instruction of the controller 704.

As such, by linking the remote meter reading terminal 120 equipped with the DLMS 126a and the binary CDMA transmitter 700, a system capable of remote meter reading without a collection device can be implemented. In the present embodiment, data communication with the FEP 620 and the metering server 600 is based on TCP / IP, and an optional CDMA communication method may be adopted in a special case such as an area without a broadband backbone network.

In addition, even in a situation where some remote reading is not possible, using the remote reading emulator 800, each collected data is read from a database (flash memory) of a binary CDMA modem having a DLMS collector function mounted on each electricity meter 110. can do. In addition, the firmware upgrade may use a wireless remote upgrade method using the emulator (800).

According to the present embodiment, it is possible to increase the efficiency of the meter reading service by eliminating unnecessary parts from the meter reading system flow and items by a system configuration faithful to the meter reading. In addition, it is possible to secure higher transmission speed and reliability of data quality using the existing backbone network. In addition, a binary CDMA transmission device that replaces the collection device is installed, and thus the configuration cost and installation and maintenance costs can be drastically reduced.

Although the present invention has been described with reference to one embodiment shown in the drawings, this is merely exemplary, and those skilled in the art will understand that various modifications and equivalent other embodiments are possible therefrom. . Therefore, the true technical protection scope of the present invention will be defined by the technical spirit of the appended claims.

1 illustrates elements constituting koinonia according to an embodiment of the present invention.

2 is a schematic diagram of a remote meter reading system using a binary CDMA technology equipped with a DLMS according to an embodiment of the present invention.

3 is a diagram showing the internal configuration of a remote meter reading terminal according to an embodiment of the present invention.

4 is a view showing the internal configuration of the collecting device according to an embodiment of the present invention.

5 is a diagram illustrating a structure of a collecting device for connecting multiple modems according to an embodiment of the present invention.

6 is a diagram illustrating a structure of a collecting device having a modem supporting multi-ports according to an embodiment of the present invention.

7 is a schematic diagram showing a remote meter reading system using a binary CDMA technology equipped with a DLMS according to an embodiment of the present invention.

8 is a schematic diagram of a remote meter reading system using a binary CDMA technology equipped with a DLMS according to another embodiment of the present invention.

9 illustrates an exemplary system structure of the telemetering system shown in FIG. 8.

Claims (5)

A remote metering terminal connected to an electricity meter formed at each customer to acquire power metering information and transmit the same through a binary CDMA communication network; A repeater formed on the binary CDMA communication network to transfer data transmitted from the remote meter reading terminal; A collection device for receiving, collecting and storing power metering information from the repeater, and transmitting the stored power metering information at predetermined intervals; Wired and wireless communication network for transmitting the data collected by the collection device; And In the remote meter reading system including a metering server for receiving, recording, and storing power usage data for each electricity meter from the wire / wireless communication network, and charging a power usage fee for the electricity meter. The remote meter reading terminal interoperates with the electricity meter, the electricity meter communication drive for receiving the power meter information previously stored in the memory formed in the electricity meter, A binary CDMA modem generating a control signal to control each part of the remote meter reading terminal, storing and managing power information received from the electricity meter according to the control signal, and controlling a data communication process; An RF module interposed between an antenna and the binary CDMA modem, A memory and a flash memory connected to the binary CDMA modem to store power information received from the electricity meter and an application program used in the binary CDMA modem; Includes a serial drive, A separate CPU is not formed in the remote meter reading terminal, and the structure of the terminal is simplified by controlling the terminal using a CPU core inside the binary CDMA modem chip. The flash memory is divided into a DLMS, a firewall program, and an area in which a boot code is stored. The DLMS includes an active power amount, a load profile, an HDLC setup, a COSEM meter identifier, a customer meter ID, a manufacturer meter ID, an active power meter constant, and a load. Characterized in that for reading the profile recording interval, A multiport is formed in the binary CDMA modem formed in the collecting device, and the binary CDMA modem and the binary CDMA modem formed in the remote metering terminal are connected in a one-to-many correspondence through a binary CDMA communication network, and a plurality of simultaneous at the collecting device are provided. A remote meter reading system, characterized in that to obtain power meter reading information from the customer. The method of claim 1, The flash memory is a remote meter reading system, characterized in that for mounting the DLMS in the flash writing (writing). The method of claim 1, The meter is a remote meter reading system, characterized in that the E-type meter is a compact version (Compacted) DLMS application. The method of claim 1, Data communication between the collection device and the meter reading server is primarily performed through a broadband backbone network including an optical communication network or a CATV network. In the case of the non-installation area of the broadband backbone network, the secondary meter reading system is made through a binary CDMA communication network. The method of claim 1, When the remote metering is not performed using the collection device, the remote metering system, characterized in that to collect the data collected through the DLMS from each remote metering terminal using an emulator.

Images