WO2022097761A1

WO2022097761A1 - Advanced metering infrastructure and control method of advanced metering infrastructure

Info

Publication number: WO2022097761A1
Application number: PCT/KR2020/015230
Authority: WO
Inventors: 김용배; 심한거
Original assignee: (주)누리텔레콤
Priority date: 2020-11-03
Filing date: 2020-11-03
Publication date: 2022-05-12

Abstract

Provided are an advanced metering infrastructure and a control method thereof. The advanced metering infrastructure according to an embodiment comprises: at least one smart meter which collects usage information; a data concentrator unit which receives state information about the smart meter and the usage information collected by the smart meter, and delivers the state information and the usage information to a server; and the server which sets a communication period for the data concentrator unit if the communication speed between the smart meter and the data concentrator unit is no greater than a first speed, and causes the smart meter to transmit push data according to the communication period.

Description

Remote meter reading system and control method of remote meter reading system

The research related to this patent was made with the support of an energy technology developer under the supervision of the Ministry of Trade, Industry and Energy (task name: development of smart factory energy-saving solution using big data, task identification number: 1415168156).

To a remote meter reading system and a control method therefor, and more particularly, to a remote meter reading system capable of transmitting data without data collision during low-speed network communication and a method for controlling the same.

With the rapid development of wired and wireless communication networks, development using communication technology is being made in almost all fields of society.

This communication technology is also applied to a watt-hour meter that measures electricity consumption.

In general, in the wireless remote metering through the remote metering system (Advanced Metering Infrastructure), the meter reading terminal reads the water use guideline value, and the computer operation center ( For example, in the present invention, it refers to a method of automatically transmitting meter-read data to a "Head End System (HES)".

At this time, the meter reading terminal, that is, the watt-hour meter transmits the data collected by itself with a smart meter (SM) to a data concentration unit (DCU) using a wired or wireless transmission medium. Types of wired media include PLC (power line communication), and wireless media include Wi-Fi, 6LoWPAN, and Zigbee. Until now, most electricity meters use the PLC method to transmit wattage information. However, in areas where wired communication is poor, there is a need to replace the service with a wireless method.

For example, the current method of collecting meter reading data in domestic AMI systems uses a high-speed PLC network. In the case of a high-speed PLC network, the network is composed around the main line. Therefore, since it is difficult to connect the barn and the barn into a single network, there is a problem in that it is difficult to achieve a high-speed network in an area with a low density of barren bars such as farming/fishing villages.

In addition, in an environment where high-speed PLC network communication is not good, meter reading data is collected using Wi-Sun, HPGP (Home Plug Green Phy), Zigbee, etc. HPGP is primarily developed by major utility companies for powerline network specifications that are low-power, cost-optimized for smart grid applications. Next, Zigbee is a wireless LAN concept that supports short-distance communication and can communicate a small amount of information instead of minimizing power consumption.

In addition, it is common to use a low-speed network of less than 250kbps for the network between the meter and the data concentrator for AMI meter reading rather than the high-speed PLC network.

When data is exchanged in such a low-speed network, a problem of reaching the communication capacity limit due to packet traffic overload frequently occurs.

According to an embodiment of the disclosed invention, when transmitting meter reading data from a meter to a data concentrator through a low-speed network, it is intended to solve a problem in which transmission failure occurs as data transmission of a plurality of meters is concentrated.

A remote meter reading system according to an aspect includes at least one smart meter collecting usage information; receiving status information of the smart meter and usage information collected by the smart meter, and receiving the status information and usage information Data Concentrator Unit that passes to the server; If the communication speed between the smart meter and the data concentrator is less than or equal to the first speed, a server that sets a communication period in the data concentrator and sends the push data to the smart meter according to the communication period ; may be included.

Also, the data concentrator may set a time stamp distributed to the at least one smart meter based on the communication period.

In addition, the smart meter, upon receiving the set time stamp information, may transmit a reception confirmation signal to the data concentrator.

Also, the smart meter may transmit push data of the smart meter to the data concentrator when the time stamp arrives.

Also, the smart meter may transmit push data including emergency information of the smart meter to the data concentrator.

In addition, the server may change the communication period between the smart meter and the data concentrator, the communication period and the time required for the smart meter to transmit push data based on the number of smart meters.

In addition, the smart meter and the data concentrator each include a low-speed network modem capable of mutual communication, and the server sets the communication period when the smart meter and the data concentrator communicate with the low-speed network-based communication, and the communication period Accordingly, the smart meter can transmit push data.

In addition, the data concentrator may automatically register low-speed network-based communication when the smart meter operates.

A method for controlling a remote meter reading system according to another aspect includes a data concentrator (Data Concentrator) of the state information of the smart meter and the usage information collected by the smart meter from at least one smart meter that collects usage information. Unit) receiving; transmitting, by the data concentrator, the status information and usage information to a server; setting a communication period between the data concentrator and the smart meter when the communication speed between the smart meter and the data concentrator is less than or equal to a first rate; and controlling the smart meter to transmit push data according to the communication period.

The setting of the communication period may further include setting a time stamp distributed to the at least one smart meter based on the communication period.

The setting of the communication period may further include, when the smart meter receives the time stamp information, transmitting an acknowledgment signal to the data concentrator.

The method may further include, by the smart meter, transmitting the push data of the smart meter to the data concentrator when the received time stamp arrives.

In addition, the step of setting the communication period; changing the communication period between the smart meter and the data concentrator, the communication period and the time required for the smart meter to transmit push data based on the number of the smart meters can

The method may further include: automatically registering low-speed network-based communication when the smart meter operates.

In addition, the step of setting the communication period; is, when the smart meter and the data concentrator are automatically registered for low-speed network-based communication during the operation of the smart meter, the server sets the communication period, and according to the communication period You can make the smart meter transmit Push data.

According to an embodiment of the disclosed invention, when the meter reading data is transmitted from the meter to the data concentrator through a low-speed network, data transmission of a plurality of meters may not be concentrated and data transmission may be possible.

1 is a diagram illustrating a relationship between a remote meter reading system including a plurality of smart meters, a data concentrator, and a head end system according to an embodiment.

2 is an internal block diagram of a remote meter reading system according to an exemplary embodiment.

3 is a control block diagram of a smart meter.

4 is a control block diagram of a data concentrator.

5 is a control block diagram of a server.

6 is a diagram for explaining a method of operating a data concentrator and a smart meter according to an embodiment.

7 is a diagram for explaining a method of operating a data concentrator and a smart meter according to an embodiment.

8 is a diagram for explaining a communication method between a data concentrator and a smart meter according to an embodiment.

[Explanation of code]

1: Remote meter reading system

100: data concentrator

SM: smart meter

S: server

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. The following examples are presented to sufficiently convey the spirit of the present invention to those of ordinary skill in the art to which the present invention pertains. The present invention is not limited to the embodiments presented herein, and may be embodied in other forms. The drawings may omit illustration of parts irrelevant to the description in order to clarify the present invention, and slightly exaggerate the size of the components to help understanding. Hereinafter, a wireless communication modem and a wireless communication modem control method will be described in detail with reference to the accompanying drawings.

1 illustrates at least one smart meter SM and a data concentrator 100 included in a remote meter reading system 1 according to an embodiment, and a server S connected to the data concentrator 100 through a data link. include

The smart meter SM may communicate with the data concentrator 100 through a wire-based network, or may perform communication through a wireless-based network. Accordingly, the smart meter SM is capable of both a high-speed network and a low-speed network.

First, the wired-based network of the smart meter (SM) includes the currently most widely used wired transmission media such as PLC, Ethernet, HFC, RS485, etc. can be transmitted Here, the wire-based network refers to Power Line Communication (PLC), high definition multimedia interface (HDMI), Peripheral Component Interconnect (PCI), PCI-express, Universal Serial Bus (USB), and Unshielded Twisted Pair (UTP LAN). A method of transmitting and receiving a wired signal through a wired cable such as a local area network) may be included, and in addition, various wired communication methods known to those skilled in the art may be included. Hereinafter, when there is no need to explain the wired communication method by type, such as power line communication and UTP LAN, it will be simply referred to as a wired communication method.

In addition, the smart meter SM may transmit the collected data to the data concentrator 100 through a wireless-based network.

Here, the radio-based network refers to a module supporting at least one wireless communication method. Here, the wireless communication method refers to long-term evolution (LTE), LTE Advance (LTE-A), code division multiple access (CDMA), wideband CDMA (WCDMA), universal mobile telecommunications system (UMTS), and Wireless Broadband (WiBro). ), GSM (Global System for Mobile Communications), and other wireless communication methods that transmit and receive wireless signals through a base station, as well as wireless LAN (Wireless LAN), WPAN (Wireless Personal Area Network), Wi-Fi (Wi-Fi), Bluetooth ( Bluetooth), Z-wave, Zigbee, WFD (Wi-Fi Direct), UWB (Ultrawideband), Infrared Data Association (IrDA), BLE (Bluetooth Low Energy), NFC (Near Field) Communication), and the like, may include a method of transmitting and receiving a wireless signal to and from an external device within a predetermined distance. Hereinafter, when there is no need to explain the wireless communication method by type, such as G-Wave and Bluetooth, it will be simply referred to as a wireless communication method. In the following, when there is no need to separately describe the wireless communication module and the wired communication module, they will be simply referred to as a communication module.

In particular, the method in which the smart meter SM transmits data to the data concentrator 100 includes a push packet that minimizes traffic (the amount of data transmitted through the network) and a pull of the server S. ) method, there is a circuit duplication data transmission method.

The pull method can be called one-way communication because only the server (S) can make a connection request by establishing a connection and exchanging data whenever the server (S) is needed for the smart meter (SM).

In contrast, the push method is a structure in which the smart meter (SM) can transmit an emergency message to the server (S) in real time.

Accordingly, in general, in the remote meter reading system 1, the pull-type meter reading data collection method is a structure in which the server S requests and responds to the desired data. Therefore, in a low-speed network, packet traffic is available in a low-speed network. It is common to use the push method when transmitting data in excess of .

In this case, the low-speed network according to an embodiment refers to a case in which communication is performed at a speed of 250 kbps or less.

However, when transmitting data measured by a smart meter (SM) in a push method through a low-speed network, a collision can be avoided only when a plurality of smart meters (SM) in the data concentrator 100 do not transmit data at the same time. can

Next, FIG. 2 is an internal block diagram of a remote meter reading system according to an embodiment, FIG. 3 is a control block diagram of a smart meter, FIG. 4 is a control block diagram of a data concentrator, and FIG. 5 is a server It is a control block diagram related to

As shown in FIG. 2 , the data concentrator 100 may be connected to the server S through power line communication. In an embodiment, the data concentrator 100 may be provided in a power transmitter, a pole transformer, or an underground transformer to perform power line communication with the server S. Also, the data concentrator 100 may receive usage information directly from the smart meter SM located within the coverage area through power line communication.

The data concentrator 100 may support a communication network within a preset coverage as shown in FIG. 1 . Here, the coverage refers to an area that is connected to a communication device through a communication network and can transmit and receive various information. In other words, the coverage refers to a distance, an area, etc. in which communication is possible through a communication network. The coverage may be different for each communication method supported by the communication module embedded in the communication device, and may vary depending on the environment and characteristics of the area where the communication device is located.

As described above, it may be difficult for the data concentrator 100 to support communication for all areas. Accordingly, there is not only one data concentrator 100 as shown in FIG. 1 , but a plurality of data concentrators 100 may exist.

In addition, when a plurality of data concentrators exist, the coverage of each data concentrator may be preset according to the environment, characteristics, and supported communication methods of the installed area, so that the coverage between the data concentrators may be the same or different. For example, a communication method may vary depending on whether the data concentrator is provided in an underground transformer or a pole phase transformer, and the coverage may be the same or different depending on an implementation method. Also, depending on whether a communication module built into the data concentrator supports a wired communication method or a wireless communication method, coverage between a plurality of data concentrators may be the same or different.

On the other hand, the area in which the communication network is supported, that is, the coverage may be expanded through interworking between the data concentrator 100 and other communication devices.

Next, as shown in FIG. 3 , the smart meter (SM) refers to a device that collects and transmits usage information. Here, the usage information is information on usage of various parameters used or consumed indoors as described above, and includes, for example, information on electricity usage, water usage, gas usage, and the like. On the other hand, electricity, water, gas consumption, etc. may be generated even if no member is present in the room. Accordingly, usage information may be generated even if at least one member is not present indoors, and the smart meter SM does not collect usage information only when a member exists indoors.

Referring to FIG. 3 , the smart meter SM may include a meter 300 , a collection communication module 310 , and a collection device controller 320 . Here, the collection communication module 310 and the collection device control unit 320 may be implemented as separate chips or integrated into one system on chip (SOC).

The meter 300 refers to a device for measuring the amount of usage related to various parameters consumed indoors. For example, the meter 300 may include at least one of a water meter measuring indoor water consumption, a gas meter measuring indoor gas consumption, and an electricity meter measuring indoor electricity consumption. .

In addition, the collection communication module 310 may transmit the usage information collected by the meter 300 to the communication device by using at least one of a wired communication method and a wireless communication method. For example, the collection communication module 310 may transmit usage information to the data concentrator 100 through a communication method. Also, the collection communication module 310 may receive information about a preset period from the data concentrator 100 .

Here, the collection communication module 310 may be implemented through at least one of a wired communication module and a wireless communication module. Specific descriptions of the wired communication module and the wireless communication module are the same as described above, and thus will be omitted.

In the wireless communication module implemented by the collection communication module 310, it may include a low-speed network modem as well as a high-speed network modem.

The low-speed network generally refers to a case of performing wireless communication at a speed of 250 kbps or less, and it is common for the smart meter (SM) to use a low-speed network when transmitting push data.

In addition, the smart meter (SM) may be provided with a collection device control unit 320 for controlling the overall operation of the smart meter (SM). Here, the collection device control unit 320 may be implemented through a processing device such as a processor, a micro control unit (MCU), and the like, and a memory.

In addition, the memory includes a flash memory type, a hard disk type, a multimedia card micro type, a card type memory (eg, SD or XD memory, etc.), random Access Memory: RAM), SRAM (Static Random Access Memory), ROM (Read-Only Memory), EEPROM (Electrically Erasable Programmable Read-Only Memory), PROM (Programmable Read-Only Memory), magnetic memory, magnetic disk, It may be implemented through at least one type of storage medium among optical disks. However, the present invention is not limited thereto, and may be implemented in any other form known in the art.

The collection device controller 320 may generate a control signal and control the overall operation of the components of the smart meter SM through the generated control signal. For example, a memory is provided in the smart meter SM, and a control program and control data for controlling the operation of the smart meter SM may be stored in the memory. Accordingly, the collection device controller 320 may generate a control signal using data stored in the memory, and may control the overall operation of the smart meter SM through the generated control signal.

In one embodiment, the collection device control unit 320 reads usage of various parameters from the meter 300 according to a preset period through a control signal, and transmits the collection communication module 310 to the data concentrator 100 . can Here, information about the preset period may be stored in the memory. The preset period can be set in seconds, minutes, time periods, etc., and there is no limitation. In this case, the collection device control unit 320 may transmit the usage information generated by mapping the collected usage information to the collection time information to the data concentrator 100 .

Hereinafter, the data concentrator 100 will be described.

Referring to FIG. 4 , the data concentrator 100 may include a central communication module 110 and a central control unit 120 . Here, the central communication module 110 and the central control unit 120 may be implemented as separate chips or integrated in one system-on-chip.

The central communication module 110 may include at least one of a wired communication module and a wireless communication module. Accordingly, the central communication module 110 of the data concentrator 100 directly receives the usage information from the smart meter (SM) located within the coverage, as shown in FIG. 1, and transmits the received usage information to the server (S). can be forwarded to

That is, the central communication module 110 can serve not only to deliver the usage information collected by the smart meter SM located within the coverage, but also to deliver the usage information collected through the smart meter SM to the server S. Do.

Meanwhile, the data concentrator 100 may be provided with a central control unit 120 . The central control unit 120 may be implemented through a processing device capable of various arithmetic processing, such as a processor and an MCU, and a memory. Control data, a program, etc. for controlling the data concentrator 100 may be stored in the memory.

The central control unit 120 may generate a control signal and control the overall operation of the data concentrator 100 through the generated control signal. For example, the central control unit 120 may activate the central communication module 110 through a control signal to support communication with various external devices located within the coverage of the central communication module 110 .

In an embodiment, the central control unit 120 may activate the central communication module 110 through a control signal to receive usage information from the smart meter SM located within the coverage of the central communication module 110 .

In another embodiment, the central control unit 120 activates the central communication module 110 through a control signal, and transmits information about a preset period to a smart meter (SM) located within the coverage of the central communication module 110 . can do.

Meanwhile, the central control unit 120 controls the central communication module 110 to send and receive only usage information from an external device located within the coverage area. For example, the central control unit 120 may control the central communication module 110 to provide a general communication service to devices located within coverage. That is, the central control unit 120 collects usage information and provides only a remote meter reading service for determining whether an abnormality has occurred in an indoor environment, or a general communication service may be provided.

Hereinafter, the server S will be described in detail.

Referring to FIG. 5 , the server S may include a server communication module 10 , a server database 30 , and a server control unit 50 . At least one of the server communication module 10 , the server database 30 , and the server control unit 50 may be integrated in a system-on-chip embedded in the server S. However, since only one system-on-chip embedded in the server S is not limited thereto, it is not limited to being integrated into one system-on-chip.

The server communication module 10 may include at least one of a wired communication module and a wireless communication module, and may exchange various data with an external device through at least one of a wired communication method and a wireless communication method. For example, the server communication module 3 may receive various data collected by the data concentrator 100 .

The server database 30 may be implemented through various previously known memories. Various data may be stored in the server database 30 .

For example, the server database 30 stores data in the form of algorithms and programs that can control the overall operation of the server S, so that the server control unit 50 uses the data stored in the server database 30 to It is possible to control the overall operation of the server (S).

In addition, the server S integrates information on a plurality of smart meters SM managed by at least one data concentrator 100 to set information on a preset period to be given to each smart meter SM. can

Accordingly, algorithms, programs, and various information stored in the server database 30 may be updated through a communication network. In this case, the update period is not limited, such as preset or may be set by the user.

Next, an operation of the remote meter reading system 1 according to an embodiment will be described with reference to FIGS. 6 and 7 . Specifically, FIGS. 6 and 7 are diagrams for explaining an operation method of the server (S), the data concentrator 100, and the smart meter (SM) according to an embodiment.

As shown in FIG. 6 , the server S acquires information about a plurality of smart meters SM managed by the data concentrator 100 , and relates to a preset period to be given to each smart meter SM. The information is sent to the data concentrator 100 .

At this time, the preset period is the number of smart meters (SM) managed by one data concentrator (100), the data processing speed of the smart meter (SM), the period to be updated according to the meter reading information transmission time and low-speed network environment. can

In addition, the preset period includes a time stamp. At this time, the time stamp is an elapsed time set from every reference transmitted to each smart meter SM, and a time stamp value according to a preset period from the reference time is transmitted to each smart meter SM.

In particular, in a low-speed network, it is common to use the push method for data transmission because the packet traffic exceeds the traffic possible in the low-speed network. can

As an example, as shown in FIG. 6 , when there are eight smart meters SM from the first smart meter SM1 to the eighth smart meter SM8 of the smart meter managed by the data concentrator 100 . For example, time stamp information determined at regular time intervals from a preset reference time may be transmitted to each smart meter SM.

When the preset period is 10 [sec], a time stamp value of 0.0.10 is transmitted to the first smart meter (SM1), a time stamp value of 0.0.20 is transmitted to the second smart meter (SM2), Just as a time stamp value of 0.0.30 is transmitted to the third smart meter SM2, a time stamp value may be collectively transmitted to the smart meter SM managed by one data concentrator 100. In this case, each unit may consist of (hour, minute, second), but is not necessarily limited to the corresponding method, and the time stamp value may be transmitted in various ways.

Accordingly, when the time stamp time arrives according to the obtained time stamp value, the first smart meter SM1 to the eighth smart meter SM8 transmits the secured collection information to the data concentrator 100 as shown in FIG. ) can be sent to

Specifically, as shown in FIG. 7 , the first smart meter SM1 receiving the time stamp value specified for each preset period (10 [sec]) set by the server S receives the input (0.0.10) It is possible to transmit the collected information secured to the data concentrator 100 . Similarly, the second smart meter SM2 may transmit the collected information secured at the input (0.0.20) to the data concentrator 100 . That is, as all the smart meters managed by one data concentrator 100 transmit collection information to the data concentrator 100 at each time stamp, at least one smart meter SM simultaneously transmits the data concentrator 100 ) to prevent possible conflicts in advance by transmitting the collected information.

Next, FIG. 8 is a diagram for explaining a communication method between a data concentrator and a smart meter according to an embodiment.

Referring to FIG. 8 , the smart meter SM may collect usage information ( 800 ). For example, the smart meter SM may collect usage information regarding various parameters used or consumed indoors, including at least one of an electricity meter, a gas meter, and a water meter.

In addition, a communication module is provided in the smart meter SM to communicate with the data concentrator 100 , and in this way, the data concentrator 100 may communicate with the server S.

First, when the smart meter (SM) is connected to a network through a low-speed network modem, automatic registration is performed by transmitting device information regarding the smart meter (SM) to the data concentrator 100 .

Accordingly, the data concentrator 100 transmits device information received from a plurality of smart meters SM managed by the data concentrator 100 to the server S.

Therefore, the server (S) sets a period in which each smart meter (SM) transmits Push data based on individual device information of the smart meter (SM) managed by the data concentrator 100 .

In addition, the data concentrator 100 transmits a time stamp according to the period set to each smart meter SM, and the received smart meter SM sends an acknowledgment message (ACK) to the data concentrator 100 send to

Accordingly, in the collection communication module 310 of each smart meter (SM), the low-speed network modem collects the collected information that is read according to the time stamp set by the data concentrator 100 to the data concentrator 100 . and, similarly, the data concentrator 100 also transmits the collected information obtained from each smart meter SM to the server S.

In the remote meter reading system (1), when the push data of each smart meter (SM) is transmitted to the data concentrator 100 through a low-speed network, information collected from a plurality of smart meters (SM) to the data concentrator 100 at the same time In the case of a collision, at least one smart meter (SM) has a problem in that the same data has to be transmitted again.

However, the remote meter reading system according to the embodiment has an advantage in that data can be successfully obtained at once without colliding with the data concentrator 100 by designating a time stamp to each smart meter.

The configuration shown in the embodiments and drawings described in this specification is only a preferred example of the disclosed invention, and there may be various modifications that can replace the embodiments and drawings of the present specification at the time of filing of the present application.

In addition, the terminology used herein is used to describe the embodiments, and is not intended to limit and/or limit the disclosed invention. The singular expression includes the plural expression unless the context clearly dictates otherwise. In the present specification, terms such as “comprise” or “have” are intended to designate that a feature, number, step, operation, component, part, or combination thereof described in the specification exists, but one or more other features It does not preclude the possibility of the presence or addition of numbers, steps, operations, components, parts, or combinations thereof.

In addition, terms including an ordinal number, such as "first", "second", etc. used herein may be used to describe various elements, but the elements are not limited by the terms, and the terms are It is used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, a first component may be referred to as a second component, and similarly, a second component may also be referred to as a first component. The term “and/or” includes a combination of a plurality of related listed items or any of a plurality of related listed items.

In addition, terms such as "~ unit", "~ group", "~ block", "~ member", "~ module", etc. used throughout this specification are at least one It can mean a unit that processes the function or operation of For example, it may mean software, hardware such as FPGA or ASIC. However, "~ part", "~ group", "~ block", "~ member", "~ module", etc. are not limited to software or hardware, and "~ part", "~ group", "~ Block", "~ member", "~ module", etc. may be a configuration stored in an accessible storage medium and executed by one or more processors.

Claims

At least one smart meter (Smart Meter) for collecting usage information;

a data concentrator unit that receives the status information of the smart meter and the usage information collected by the smart meter, and delivers the status information and usage information to a server;

If the communication speed between the smart meter and the data concentrator is less than or equal to the first speed, a server that sets a communication period in the data concentrator and sends the push data to the smart meter according to the communication period A remote meter reading system including ;.
The method of claim 1,

The data concentrator,

A remote meter reading system for setting a time stamp distributed to the at least one smart meter based on the communication period.
3. The method of claim 2,

The smart meter is

When receiving the set time stamp information, a remote meter reading system for transmitting an acknowledgment signal to the data concentrator.
4. The method of claim 3,

The smart meter is

When the time stamp arrives, the remote meter reading system transmits the push data of the smart meter to the data concentrator.
5. The method of claim 4,

The smart meter is

A remote meter reading system for transmitting push data including emergency information of the smart meter to the data concentrator.
6. The method of claim 5,

The server is

A remote meter reading system for changing the communication period and the time required for the smart meter to transmit push data based on the communication speed between the smart meter and the data concentrator and the number of the smart meters.
3. The method of claim 1 or 2,

The smart meter and the data concentrator each include a low-speed network modem capable of mutual communication,

The server is

When the smart meter and the data concentrator perform the low-speed network-based communication, the communication period is set, and the smart meter transmits push data according to the communication period.
8. The method of claim 7,

The data concentrator,

A remote meter reading system in which low-speed network-based communication is automatically registered when the smart meter is operated.
receiving, by a Data Concentrator Unit, status information of the smart meter and usage information collected by the smart meter from at least one smart meter that collects usage information;

transmitting, by the data concentrator, the status information and usage information to a server;

setting a communication period between the data concentrator and the smart meter when the communication speed between the smart meter and the data concentrator is less than or equal to a first rate; and

and controlling the smart meter to transmit push data according to the communication period.
10. The method of claim 9,

Setting the communication period comprises:

and setting a time stamp distributed to the at least one smart meter based on the communication period.
11. The method of claim 10,

Setting the communication period;

and, when the smart meter receives the time stamp information, transmitting an acknowledgment signal to the data concentrator.
12. The method of claim 11,

and transmitting, by the smart meter, the push data of the smart meter to the data concentrator when the received time stamp is reached.
13. The method of claim 12,

Setting the communication period;

A control method of a remote meter reading system for changing a communication period between the smart meter and the data concentrator and a time required for the smart meter to transmit push data based on the communication speed and the number of the smart meters.
14. The method of claim 13,

and automatically registering low-speed network-based communication when the smart meter operates.
15. The method of claim 14,

Setting the communication period;

When the smart meter and the data concentrator automatically register low-speed network-based communication during operation of the smart meter, the server sets the communication period, and the smart meter transmits push data according to the communication period. A method for controlling a remote meter reading system.