KR20180045993A - Wireless modem and metering server for remote metering - Google Patents

Abstract

A wireless modem for remote meter reading includes a first communication unit for collecting meter reading data from a plurality of meters, a conversion unit for converting the collected meter reading data into a data format corresponding to the meter reading server through a CPU (Central Processing Unit) And a second communication unit for transmitting the converted meter reading data to the meter reading server through a CPU to be used, wherein the converting unit and the second communicating unit are configured to use power consumption equal to or lower than the target consumed power by sharing the CPU .

Description

[0001] WIRELESS MODEM AND METERING SERVER FOR REMOTE METERING [0002]

The present invention relates to a wireless modem for remote meter reading and a meter reading server.

Intelligent Metering Infrastructure (AMI) is a system that monitors real-time power usage in a central control room and allows remote control of power usage. Utilizing intelligent metering infrastructure, electric utilities can acquire real-time metering information of all customers and efficiently control power demand based on the data.

In connection with such an intelligent meter reading infrastructure, Korean Patent Laid-Open Publication No. 2014-0106067 discloses a power meter reading system.

The wireless modem used in the conventional intelligent meter probe infrastructure allocates the respective CPUs and memories to the communication section for wireless communication and the data processing section for processing the meter reading data so that the communication section CPU and memory process wireless communication packets, Data processing part The CPU and the memory are responsible for collecting the meter reading data.

However, the wireless modem configured to include the CPU and the memory in the communication part and the data processing part has the disadvantage that the manufacturing cost is increased due to the use of the redundant elements. In addition, since the maximum power consumption is increased due to the power consumption of each device, it often occurs that the device can not meet the requirements of the customer. In addition, when the maximum power consumption is lowered in accordance with the requirements of the customer, there is a disadvantage that normal communication may not be performed.

The communication module in the conventional remote meter reading wireless modem and the respective CPUs and memories used in the remote meter reading data processing module are integrated into one CPU and memory so that the remote control reading wireless Modem and meter reading server. Also, it is intended to provide a wireless modem for remote meter reading and a meter reading server which can simplify a complicated design structure by unifying main elements such as a CPU and a memory which are used redundantly. The present invention provides a wireless modem for remote meter reading and a meter reading server that simplify the design structure of a wireless modem to reduce the cost of major components and prevent malfunction caused by a complicated design structure. And to provide a wireless modem for remote meter reading and a meter reading server that can reduce the power consumption so as to be applicable to a watt-hour meter currently used without reducing the maximum output by sharing the CPU and memory used in each module. It is to be understood, however, that the technical scope of the present invention is not limited to the above-described technical problems, and other technical problems may exist.

As a means for achieving the above technical object, an embodiment of the present invention is a data processing system including a first communication unit for collecting meter reading data from a plurality of meters, a storage unit for storing the collected meter reading data through a CPU (Central Processing Unit) And a second communication unit for transmitting the converted meter reading data to the meter reading server through a CPU used in the converting unit, wherein the converting unit and the second communicating unit share the CPU So as to use power consumption equal to or lower than the target power consumption.

According to an example, the second communication unit may generate at least one socket of TCP or UDP required for wireless communication with the metering server, and may transmit the converted metering data to the metering server through the generated socket have. The second communication unit may call an API function defined for connection of the socket and transmission / reception of the meter reading data.

According to an example, the second communication unit receives a command message from the meter reading server, and the converting unit can extract command data associated with the meter reading data from the command message. Wherein the conversion unit converts the command message into a data format corresponding to the plurality of meters based on the extracted command data and the first communication unit can transmit the command message in which the data format is converted to the plurality of meters . The command message may include any one of a change in the collection period for the inspection data or a collection of the inspection data.

According to one example, the first communication unit collects the metering data from the plurality of meters based on a predetermined collection period, and when the command message includes a change in the collection period for the metering data, And collect the metering data from the plurality of meters based on the metering data.

According to one example, the second communication unit can be configured to adjust the communication output based on the target power consumption. The target power consumption can be received from the electronic wattage server for remote meter reading.

According to another embodiment of the present invention, there is provided an information processing apparatus including: a receiving unit that receives metering data collected from a plurality of meters via a wireless modem; a command receiving unit that receives command data on the received metering data and generates a command message based on the command data; And a transmitter for transmitting the generated command message to the wireless modem, wherein the meter reading data is converted into a data format corresponding to the meter reading server by a CPU of the wireless modem, and the converted meter reading data is And the wireless modem is configured to use power consumption less than or equal to the target power consumption by sharing the CPU by the CPU and transmitted to the meter reading server via wireless communication.

The above-described task solution is merely exemplary and should not be construed as limiting the present invention. In addition to the exemplary embodiments described above, there may be additional embodiments described in the drawings and the detailed description of the invention.

According to any one of the above-mentioned objects of the present invention, by integrating each of the CPUs and memories used in the communication module and the remote meter reading data processing module in the conventional wireless metering wireless modem into one CPU and memory, It is possible to provide a wireless modem for remote meter reading and a meter reading server that can adjust the communication output in accordance with the power consumption. Further, it is possible to provide a wireless modem for remote meter reading and a meter reading server which can simplify a complicated design structure by unifying main elements such as a CPU and a memory which are used redundantly. It is possible to provide a wireless modem for remote meter reading and a meter reading server which simplify the design structure of the wireless modem to reduce the cost of major elements and prevent a failure caused by a complicated design structure. It is possible to provide a wireless modem for remote meter reading and a meter reading server that can reduce power consumption so as to be applicable to a watt-hour meter currently used without reducing the maximum output by sharing the CPU and memory used in each module.

1 is a configuration diagram of an automatic meter reading system according to an embodiment of the present invention.
2 is a configuration diagram of a wireless modem for remote meter-reading according to an embodiment of the present invention.
3 is a flowchart of a method of remote meter reading in a wireless modem according to an embodiment of the present invention.
4 is a configuration diagram of a meter reading server for remote meter reading according to an embodiment of the present invention.
5 is a flowchart of a method of remote meter-reading in a meter reading server according to an embodiment of the present invention.
6 is a flowchart illustrating an operation of remote meter reading in the remote meter reading system according to an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings, which will be readily apparent to those skilled in the art. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. In order to clearly illustrate the present invention, parts not related to the description are omitted, and similar parts are denoted by like reference characters throughout the specification.

Throughout the specification, when a part is referred to as being "connected" to another part, it includes not only "directly connected" but also "electrically connected" with another part in between . Also, when an element is referred to as "including" an element, it is to be understood that the element may include other elements as well as other elements, And does not preclude the presence or addition of one or more other features, integers, steps, operations, components, parts, or combinations thereof.

In this specification, the term " part " includes a unit realized by hardware, a unit realized by software, and a unit realized by using both. Further, one unit may be implemented using two or more hardware, or two or more units may be implemented by one hardware.

In this specification, some of the operations or functions described as being performed by the terminal or the device may be performed in the server connected to the terminal or the device instead. Similarly, some of the operations or functions described as being performed by the server may also be performed on a terminal or device connected to the server.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a configuration diagram of an automatic meter reading system according to an embodiment of the present invention. Referring to FIG. 1, the remote meter reading system 1 may include a plurality of meters 110, a wireless modem 120, a meter reading server 130, and an electronic wattage server 140 for remote meter reading. A plurality of meters 110, a wireless modem 120, a meter reading server 130 and an electronic wattage server for remote meter reading 140 illustratively show the components that can be controlled by the remote meter reading system 1 .

Each component of the remote meter reading system 1 of FIG. 1 is generally connected via a network. For example, as shown in FIG. 1, the wireless modem 120 may be concurrently or at intervals with a plurality of meters 110, a meter reading server 130, or an electronic wattage server 140 for remote meter reading .

The network refers to a connection structure in which information can be exchanged between each node such as terminals and servers. An example of such a network is 3G, 4G, 5G, Wi-Fi, Bluetooth, , A LAN (Local Area Network), a Wireless LAN (Local Area Network), a WAN (Wide Area Network), a PAN (Personal Area Network), and the like.

The plurality of meters 110 are installed on the customer side, and can perform meter reading on electricity, gas, water, temperature, heat quantity, etc. used in the customer. The plurality of meters 110 may transmit the meter reading data to the wireless modem 120.

The wireless modem 120 is connected to a plurality of meters 110 and can automatically scan and recognize a plurality of meters 110. The wireless modem 120 may collect the meter reading data from a plurality of the recognized meters 110 and store the collected data at a predetermined collection period.

The wireless modem 120 can convert the metering data collected through the CPU (Central Processing Unit) into the data format corresponding to the metering server 130. [

The wireless modem 120 can transmit the metering data converted through the same CPU as the CPU used for converting the data format to the metering server 130. For example, a TCP or UDP socket required for wireless communication with the metering server 130 may be generated, and the metering data converted through the generated TCP or UDP socket may be transmitted to the metering server 130. The wireless modem 120 may call API functions defined for connection of TCP or UDP sockets and sending and receiving of meter reading data.

The conventional wireless modem uses different CPU and memory in the wireless communication module and the data processing module so that the software is installed in the wireless communication module and the data processing module. The conventional wireless modem used a serial communication interface and communicated with the meter reading server 130 by generating and analyzing an AT command which is a string based command system for inputting and outputting all commands.

(AT + UDPSEND) = 'AT + RCPOPEN = xx', 'AT + BIND = xx', 'AT + LISTEN = xx', '+ IND = ACCEPT', 'AT + TCPSEND = xxxx' = xxxx ') and' + IND = RECV: xxxx '. The conventional wireless modem monitors the serial port by transmitting to the serial port using a string based command such as 'AT + RCPOPEN = xx', 'AT + BIND = xx', 'AT + LISTEN = xx' Such as < / RTI > In addition, the conventional wireless modem waited until a character string indicating the client connection was received by the serial port using a command based on the string '+ IND = ACCEPT'. If there is data to be transmitted (for example, xxxx), the conventional wireless modem 120 transmits the data to the serial port using a string-based command such as 'AT + TCPSEND = xxxx' I waited until I received the completion string. In addition, the conventional wireless modem receives the data transmitted from the meter reading server 130 through a serial-based command such as '+ IND = RECV: xxxx' to obtain the 'xxxx' data.

However, the present invention allows the wireless communication module and the data processing module to communicate with the meter reading server 130 using an API function in an environment of a common operating system (OS) such as Linux by sharing one CPU and memory . In addition, since the wireless communication module and the data processing module share one CPU and memory, the present invention can maximize communication output while reducing power consumption compared with the conventional case.

The API functions include 'socket API' for creating a socket, 'bind API' for giving an IP address and port number, 'listen API' for making a client wait for connection, 'listen API' accept API 'for transmitting a packet,' send API 'for transmitting a packet, and' recv API 'for receiving a packet.

The wireless modem 120 may receive an instruction message from the meter reading server 130. [ The command message may include a change in the collection period of the metering data or a request to collect metering data. The wireless modem 120 extracts command data associated with the meter reading data from the command message, converts the command message into a data format corresponding to the plurality of meters 110 based on the extracted command data, Message to a plurality of meters (110).

The wireless modem 120 may execute instructions associated with the meter reading data based on the command message. If the command message includes a change in the collection period for the meter reading data, the wireless modem 120 may collect meter reading data from the plurality of meters 110 based on the changed collection period. For example, if the command message includes a command to perform a meter reading cycle every 15 minutes, the wireless modem 120 may collect the meter reading data by changing the meter reading cycle that was previously set to 30 minutes to every 15 minutes have.

The wireless modem 120 may adjust the communication power based on the target power consumption. The target power consumption may be received from the electronic wattage server for remote meter reading 140 or may be preset by the administrator. For example, if the target power consumption is set to 2.5W, the wireless modem 120 may adjust the communication power to set the maximum power consumption to be less than 2.5W.

As described above, the wireless modem 120 can be configured to share the CPU and use the power consumption equal to or lower than the target power consumption at the time of transfer of the meter reading data and data format conversion of the meter reading data.

The meter reading server 130 can receive the meter reading data collected from the plurality of meters 110 through the wireless modem 120. At this time, the meter reading server 130 can receive the meter reading data converted through the TCP or UDP socket generated by the wireless modem 120. For example, the meter reading server 130 may receive the meter reading data converted through the API function called by the wireless modem 120 for connection of the TCP or UDP socket and transmission / reception of the meter reading data.

The meter reading server 130 receives the command data for the received meter reading data and can generate a command message based on the command data. The command message may include a change in the collection period for the meter reading data, a meter reading data collection request, and the like. The meter reading server 130 may transmit the generated command message to the wireless modem 120.

The electronic wattage server for remote meter reading 140 can transmit the target power consumption to the wireless modem 120. [ The target power consumption may be set within a range of 2W to 5W, for example.

2 is a configuration diagram of a wireless modem for remote meter-reading according to an embodiment of the present invention. Referring to FIG. 2, the wireless modem 120 may include a first communication unit 210, a conversion unit 220, and a second communication unit 230.

The first communication unit 210 can collect the meter reading data from the plurality of meters 110. [ The first communication unit 210 may be connected to the plurality of meters 110 by various communication methods such as RS-232, RS-485, and IR communication. For example, the first communication unit 210 may collect the meter reading data from the plurality of meters 110 based on a predetermined collection period, and the predetermined collection period may be set to, for example, every 30 minutes .

When the first communication unit 210 receives the command message from the meter reading server 130 in the second communication unit 230, the first communication unit 210 can transmit the command message having the converted data format to the plurality of meters 110. For example, if the command message includes a change in the collection period for the metering data, the first communication unit 210 may collect metering data from the plurality of meters 110 based on the changed collection period.

The conversion unit 220 may convert the metering data collected through the CPU (Central Processing Unit) into a data format corresponding to the metering server 130. [

When the second communication unit 230 receives the command message from the meter reading server 130, the converting unit 220 may extract command data associated with the meter reading data from the command message. The command message may include a change in the collection period for the meter reading data, a meter reading data collection request, and the like. The conversion unit 220 may convert the command message into a data format corresponding to the plurality of meters 110 based on the extracted command data.

The second communication unit 230 can transmit the meter reading data converted through the CPU used in the converting unit 220 to the meter reading server 130. For example, the second communication unit 230 may transmit the metering data to the metering server 130 through a polling method or a push message method. To this end, the second communication unit 230 generates a TCP or UDP socket necessary for wireless communication with the meter reading server 130, and transmits the meter reading data converted through the generated TCP or UDP socket to the meter reading server 130 have. The second communication unit 230 may call API functions defined for the connection of the TCP or UDP socket and the transmission / reception of the meter reading data. The API functions include 'socket API' for creating a socket, 'bind API' for giving an IP address and port number, 'listen API' for making a client wait for connection, 'listen API' accept API 'for transmitting a packet,' send API 'for transmitting a packet, and' recv API 'for receiving a packet.

The second communication unit 230 can receive an instruction message from the meter reading server 130. [ For example, the command message may be configured based on the MAC address by the meter reading server 130, but is not limited thereto. Also, protocol conversion by a separate relay server (not shown), for example, may be a conversion based on a MAC address based on a telephone number.

The second communication unit 230 can adjust the communication output based on the target power consumption. The target power consumption may be received from the electronic wattage server for remote meter reading 140 or may be preset by the administrator. For example, when the target power consumption is 2.5 W from the electronic wattage server 140 for remote meter-reading, the second communication unit 230 determines that the maximum power consumption of the wireless modem 120 does not exceed 2.5 W, Can be adjusted.

As described above, the converting unit 220 and the second communication unit 230 can be configured to use the power consumption equal to or lower than the target power consumption by sharing the CPU.

3 is a flowchart of a method of remote meter reading in a wireless modem according to an embodiment of the present invention. The method of remote meter reading performed by the wireless modem 120 according to the embodiment shown in FIG. 3 includes steps that are processed in a time-series manner in the remote meter-reading system 1 according to the embodiment shown in FIGS. 1 and 2 do. Therefore, even if omitted in the following description, the present invention is also applied to a remote meter reading method performed by the wireless modem 120 according to the embodiment shown in FIGS.

In step S310, the wireless modem 120 may collect meter reading data from a plurality of meters 110. [

In step S320, the wireless modem 120 may convert the meter reading data collected through the CPU (Central Processing Unit) into a data format corresponding to the meter reading server 130. [

In step S330, the wireless modem 120 can transmit the meter reading data converted through the CPU to the meter reading server 130 when converting the data format. The wireless modem 120 can be configured to use a power consumption equal to or lower than the target power consumption by sharing the CPU at the time of conversion of the data format and transmission of the meter reading data.

Although not shown in FIG. 3, the wireless modem 120 generates a TCP or UDP socket necessary for wireless communication with the meter reading server 130, and transmits the meter reading data converted through the generated TCP or UDP socket to the meter server 130 ). ≪ / RTI >

Although not shown in FIG. 3, the wireless modem 120 may further include a step of calling a defined API function for connection of a TCP or UDP socket and sending and receiving of meter reading data.

Although not shown in FIG. 3, the method may further include receiving an instruction message from the meter reading server 130 and extracting instruction data associated with the reference data from the instruction message. The command message may include either a change in the collection period for the metering data or a metering data collection request.

Although not shown in FIG. 3, the wireless modem 120 may convert the command message into a data format corresponding to the plurality of meters 110 based on the extracted command data, and transmit the command message with the converted data format to a plurality of meters (110). ≪ / RTI >

Although not shown in FIG. 3, the wireless modem 120 may be configured to collect meter reading data from a plurality of meters 110 based on a predetermined collection period, and if the command message includes a change in the collection period for the meter reading data, And collecting meter reading data from the plurality of meters 110 based on the collection period.

Although not shown in FIG. 3, the wireless modem 120 may further include adjusting the communication power based on the target power consumption. The target power consumption can be received from the electronic wattage server for remote meter reading 140 or preset by an administrator.

In the above description, steps S310 to S330 may be further divided into additional steps or combined into fewer steps, according to an embodiment of the present invention. Also, some of the steps may be omitted as necessary, and the order between the steps may be changed.

4 is a configuration diagram of a meter reading server for remote meter reading according to an embodiment of the present invention. 4, the meter reading server 130 may include a receiving unit 410, an instruction message generating unit 420, and a transmitting unit 430.

The receiving unit 410 can receive the meter reading data collected from the plurality of meters 110 through the wireless modem 120. [ At this time, the receiving unit 410 can receive the meter reading data converted through the TCP or UDP socket generated by the wireless modem 120. [ For example, the receiving unit 410 may receive the metering data converted through the API function called by the wireless modem 120 for connection of the TCP or UDP socket and transmission / reception of the metering data.

The command message generator 420 receives the command data for the received meter reading data and can generate the command message based on the command data. For example, the command message generator 420 may generate a command message based on the MAC address. The command message may include, for example, changing the collection period for the metering data, requesting the metering data collection, and the like.

The transmitter 430 may transmit the generated command message to the wireless modem 120. For example, the transmitter 430 may transmit a command message based on the MAC address to the wireless modem 120.

5 is a flowchart of a method of remote meter-reading in a meter reading server according to an embodiment of the present invention. The remote meter reading method performed by the meter reading server 130 according to the embodiment shown in FIG. 5 includes the steps of the remote meter reading system 1 according to the embodiment shown in FIGS. 1 to 4, do. Therefore, even if omitted in the following description, the present invention is also applied to the remote meter reading method performed by the meter reading server 130 according to the embodiment shown in Figs.

In step S510, the meter reading server 130 may receive the meter reading data collected from the plurality of meters 110 through the wireless modem 120. [

In step S520, the meter reading server 130 receives the command data for the received meter reading data, and generates the command message based on the command data. The command message may include either a change in the collection period for the metering data or a metering data collection request.

In step S530, the meter reading server 130 may transmit the generated command message to the wireless modem 120. [

Although not shown in FIG. 5, the meter reading server 130 may further include a step of receiving the meter reading data converted through the TCP or UDP socket generated by the wireless modem 120.

Although not shown in FIG. 5, the meter reading server 130 further includes a step of receiving the meter reading data converted through the API function called by the wireless modem 120 for connection of the TCP or UDP socket and transmission / reception of the meter reading data can do.

In the above description, steps S510 to S530 may be further divided into further steps or combined into fewer steps, according to an embodiment of the present invention. Also, some of the steps may be omitted as necessary, and the order between the steps may be changed.

6 is a flowchart illustrating an operation of remote meter reading in the remote meter reading system according to an embodiment of the present invention. Referring to FIG. 6, the remote meter reading system 1 may include a plurality of meters 110, a wireless modem 120, a meter reading server 130, and an electronic wattage server 140 for remote meter reading.

The electronic wattage server for remote meter reading 140 can transmit the target consumption power to the wireless modem 120 (S601). Alternatively, the target power consumption may be preset by the administrator of the wireless modem 120 or preset at the factory.

When the wireless modem 120 searches for a plurality of meters 110 (S602), the plurality of meters 110 may transmit the meter reading data to the wireless modem 120 based on the predetermined collection period (S603).

The wireless modem 120 converts the meter reading data collected through the CPU into a data format corresponding to the meter reading server 130 (S604), creates a TCP or UDP socket (S605) The converted meter reading data can be transmitted to the meter reading server 130 after adjusting the communication output based on the target consumption power (S606).

The meter reading server 130 receives the command data for the meter reading data in step S607, generates a command message based on the command data in step S608, and transmits the command message to the wireless modem 120 in step S609.

The wireless modem 120 extracts command data associated with the meter reading data from the command message, converts the command message into a data format corresponding to the plurality of meters 110 based on the extracted command data (S611) The command message in which the data format has been converted may be transmitted to the plurality of meters 110 (S612).

In the above description, steps S601 through S612 may be further divided into additional steps, or combined into fewer steps, according to an embodiment of the present invention. Also, some of the steps may be omitted as necessary, and the order between the steps may be changed.

The method for remote meter reading in the wireless modem and the meter reading server described with reference to Figs. 1 to 6 can also be implemented in the form of a recording medium including a computer program stored in a medium executed by the computer or an instruction executable by the computer . In addition, the method of remote meter reading in the wireless modem and the meter reading server described with reference to Figs. 1 to 6 can also be implemented in the form of a computer program stored in a medium executed by a computer. Computer readable media can be any available media that can be accessed by a computer and includes both volatile and nonvolatile media, removable and non-removable media. In addition, the computer-readable medium may include both computer storage media and communication media. Computer storage media includes both volatile and nonvolatile, removable and non-removable media implemented in any method or technology for storage of information such as computer readable instructions, data structures, program modules or other data. Communication media typically includes any information delivery media, including computer readable instructions, data structures, program modules, or other data in a modulated data signal such as a carrier wave, or other transport mechanism.

It will be understood by those skilled in the art that the foregoing description of the present invention is for illustrative purposes only and that those of ordinary skill in the art can readily understand that various changes and modifications may be made without departing from the spirit or essential characteristics of the present invention. will be. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive. For example, each component described as a single entity may be distributed and implemented, and components described as being distributed may also be implemented in a combined form.

The scope of the present invention is defined by the appended claims rather than the detailed description and all changes or modifications derived from the meaning and scope of the claims and their equivalents are to be construed as being included within the scope of the present invention do.

110: Multiple meters
120: Wireless modem
130: meter reading server
140: Electronic wattage server for remote meter reading
210: first communication section
220:
230: second communication section
410:
420: Command message generating unit
430:

Claims (13)

A wireless modem for remote meter reading,
A first communication unit for collecting meter reading data from a plurality of meters;
A conversion unit for converting the collected meter reading data into a data format corresponding to the meter reading server through a CPU (Central Processing Unit); And
And a second communication unit for transmitting the converted meter reading data to the meter reading server through a CPU used in the converting unit,
Wherein the conversion unit and the second communication unit are configured to use power consumption equal to or lower than the target power consumption by sharing the CPU.
The method according to claim 1,
Wherein the second communication unit generates at least one socket of TCP or UDP required for wireless communication with the metering server,
And transmits the converted metering data to the metering server via the generated socket.
3. The method of claim 2,
And the second communication unit calls an API function defined for connection of the socket and transmission / reception of the meter reading data.
The method according to claim 1,
The second communication unit receives an instruction message from the meter reading server,
Wherein the conversion unit extracts command data associated with the meter reading data from the command message.
5. The method of claim 4,
Wherein the conversion unit converts the command message into a data format corresponding to the plurality of meters based on the extracted command data,
Wherein the first communication unit transmits the command message in which the data format is converted to the plurality of meters.
5. The method of claim 4,
Wherein the command message includes either a change in the collection period for the meter reading data or a meter reading data collection request.
The method according to claim 6,
Wherein the first communication unit collects the metering data from the plurality of meters based on a predetermined collection period,
And collects the metering data from the plurality of meters based on the modified collection period if the command message includes a change in the collection period for the metering data.
The method according to claim 1,
And the second communication unit is configured to adjust the communication output based on the target power consumption.
The method according to claim 1,
And the target power consumption is received from the electronic wattage server for remote meter reading.
A meter reading server for remote meter reading,
A receiving unit for receiving meter reading data collected from a plurality of meters via a wireless modem;
A command message generator for receiving command data for the received meter reading data and generating a command message based on the command data; And
And a transmitter for transmitting the generated command message to the wireless modem,
Wherein the meter reading data is converted into a data format corresponding to the meter reading server by the CPU of the wireless modem and the converted meter reading data is transmitted to the meter reading server by the CPU via wireless communication,
Wherein the wireless modem is configured to use power consumption equal to or lower than the target power consumption by sharing the CPU.
11. The method of claim 10,
Wherein the receiving unit receives the converted metering data through at least one socket of TCP or UDP generated in the wireless modem.
12. The method of claim 11,
Wherein the receiving unit receives the converted meter reading data through an API function called by the wireless modem for connection of the socket and transmission / reception of the meter reading data.
11. The method of claim 10,
Wherein the command message includes any one of a change in the collection period for the metering data or a metering data collection request.

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