KR101103613B1 - Metering system using mobile communication network - Google Patents

Abstract

The present invention relates to a weighing system using a wireless communication network, and more particularly, measures the amount of electricity produced by a generator of a power plant and stores it in a memory, and receives a weighing data transfer command from a wireless modem to store the weighing data stored in the memory. A power meter for transmitting to; A wireless modem communicating with the electricity meter using a predetermined communication method, transmitting a metering data transmission command to the electricity meter, and transmitting the metering data received from the electricity meter by a packet data transmission method or a circuit data transmission method using a mobile communication network; ; A router which receives the packet data transmitted by the wireless modem through the mobile communication network, extracts the location of the packet, and transmits it to a metering server; A server-side wireless modem for transmitting and receiving circuit data with the wireless modem through the mobile communication network; A metering server connected to the router and the server-side radio modem, respectively, for managing and interpreting metering data received from the radio modem, and transmitting setting information and metering data non-received signal of the radio modem; Including information generated during the transmission and reception of the metering server and the wireless modem and information DB server for storing the setting information of the metering server and the wireless modem, it is possible to securely obtain the metering data while saving communication costs To provide a metering system using a wireless communication network that can easily check the communication status of the wireless modem and the power supply status, humidity, temperature and the like of the wireless modem.

Weighing System, Automatic Weighing, Required Weighing, Direct Weighing

Description

Metering system using mobile communication network

The present invention relates to a weighing system using a wireless communication network, and more particularly, measures the amount of electricity produced by a generator of a power plant and stores it in a memory, and receives a weighing data transfer command from a wireless modem to store the weighing data stored in the memory. A power meter for transmitting to; A wireless modem communicating with the electricity meter using a predetermined communication method, transmitting a metering data transmission command to the electricity meter, and transmitting the metering data received from the electricity meter by a packet data transmission method or a circuit data transmission method using a mobile communication network; ; A router which receives the packet data transmitted by the wireless modem through the mobile communication network, extracts the location of the packet, and transmits it to a metering server; A server-side wireless modem for transmitting and receiving circuit data with the wireless modem through the mobile communication network; A metering server connected to the router and the server-side radio modem, respectively, for managing and interpreting metering data received from the radio modem, and transmitting setting information and metering data non-received signal of the radio modem; Including information generated during the transmission and reception of the metering server and the wireless modem and information DB server for storing the setting information of the metering server and the wireless modem, it is possible to securely obtain the metering data while saving communication costs The present invention provides a metering system using a wireless communication network that can easily check information such as a wireless modem communication status, power supply status, humidity, temperature, and the like of the wireless modem.

Currently, electricity used in homes and businesses is produced by power companies throughout the country. Electricity is difficult to store, so supply and demand must always match, but power demand is constantly changing, so power generation companies are adjusting their production to meet changing demand. Each power company installs an electricity meter to measure the amount of electricity generated by each power plant, and transfers the measured electricity to the Korea Electric Power Exchange, and pays a corresponding fee according to the electricity produced by the generator of each power company from the Korea Power Exchange. It is paid. Therefore, it is important for KEPCO to obtain information on the metering data of the electricity produced by the generator, which checks the state of the meter and the meter measured by the person (the meter) to check the power generation of the power plants located in remote areas by the Nimbi phenomenon. The method has a problem in solving labor costs, inaccurate meter reading, and ever-changing demand and supply of electric power. Accordingly, a metering system for remotely measuring the amount of electricity generated by a generator has been devised.

In the conventional remote metering system, a modem connected to an electricity meter transmits a value measured by the electricity meter to a metering server using a mobile communication network. The remote weighing system cannot receive metering data from electricity meters whose communication standards and communication protocols differ from each other, and when the meter reading fails, the remote metering system instructs the metering server to send untransmitted metering data while the telephone line of the metering server and modem is maintained. There was a problem in that it costs a lot of communication costs.

The present invention is to solve the above-mentioned problems of the prior art, and the following automatic weighing when the weighing server does not receive the weighing data, including the metering instruction unit of the wireless modem, the unreceived signal generation instruction module of the server, the direct metering instruction module In this case, the weighing data that was not received by the weighing server is also packetized and transmitted, and when several packet data transmissions are failed, circuit data transmission can be used to save weighing data while saving communication costs. The purpose is to provide a metering system using a wireless communication network.

In addition, an object of the present invention is to provide a metering system using a wireless communication network capable of communicating with a power meter having a communication standard, such as RS-232C, RS-422C, RS-485C, including a communication driver.

In addition, the present invention can communicate with a power meter having a variety of communication protocols, including a protocol conversion unit, and can upgrade the communication protocol of a new standard including a function setting unit and an upgrade unit to communicate with a power meter of a new communication standard The purpose is to provide a metering system using a wireless communication network.

In addition, the present invention provides a wireless communication network that can check the communication status and the power supply status, humidity, temperature and the like of the wireless modem power meter and metering server through the display unit or the metering server of the wireless modem. The purpose is to provide a used weighing system.

The present invention is implemented by the embodiment having the following configuration in order to achieve the above object.

According to an embodiment of the present invention, a metering system using a wireless communication network according to the present invention measures the amount of electricity produced by the generator of the power plant and stores it in the memory, and receives the weighing data transmission command from the wireless modem to store the metering in the memory A power meter for transmitting data to the wireless modem; A wireless modem communicating with the electricity meter using a predetermined communication method, transmitting a metering data transmission command to the electricity meter, and transmitting the metering data received from the electricity meter by a packet data transmission method or a circuit data transmission method using a mobile communication network; ; A router which receives the packet data transmitted by the wireless modem through the mobile communication network, extracts the location of the packet, and transmits it to a metering server; A server-side wireless modem for transmitting and receiving circuit data with the wireless modem through the mobile communication network; A metering server connected to the router and the server-side radio modem, respectively, for managing and interpreting metering data received from the radio modem, and transmitting setting information and metering data non-received signal of the radio modem; And an information DB server for storing information generated in the process of transmitting and receiving the metering server and the wireless modem and setting information of the metering server and the wireless modem.

According to another embodiment of the present invention, in the metering system using a wireless communication network according to the present invention, the wireless modem may communicate data with the electricity meter using a communication method of RS-232C, RS-422C, and RS-485C. A communication driver for controlling input and output, a protocol processing unit for converting to a standard protocol so as to communicate with a power meter having a different communication protocol, and a buffer for adjusting an operation speed and timing during communication between the power meter and the wireless modem. A power meter communication unit; Automatic weighing module for instructing automatic collection of weighing data from electricity meter and transmission of packetized weighing data to metering server according to automatic weighing cycle, and next automatic weighing when wireless modem receives no weighing data from metering server. A non-transmitted data transmission instruction performing module for instructing packetized data to be transmitted together with the non-transmitted data at the time, and correlating with the automatic weighing period of the wireless modem when the wireless modem receives a weighing data request signal from the metering server. A metering instruction unit including a direct metering module which collects metering data not transmitted to the metering server from the meter and directs the metering server to the circuit data transmission method; A storage unit for storing basic information of the power meter, the wireless modem, the metering server, and the metering data transmitted and received by the wireless modem; A power supply unit supplying power to the wireless modem and checking a state of the supplied power; A display driver for driving a display unit to display a communication state and an operation state of the wireless modem; A temperature and humidity detection unit for sensing a temperature and humidity around the wireless modem and generating a warning signal when the wireless modem is out of a range of acceptable temperature and humidity; A wireless communication unit for transmitting and receiving packet data and circuit data to and from the metering server through the mobile communication network; A function setting and upgrading unit performing a function of checking and changing a setting state of the wireless modem and performing a function of upgrading a communication protocol of a new standard; It characterized in that it comprises a control unit for controlling each configuration of the wireless modem.

According to another embodiment of the present invention, in the metering system using a wireless communication network according to the present invention, the metering server is connected to the router to receive packet data, the packet module for controlling the traffic of the packet data, and A circuit module connected to the server-side wireless modem to control the circuit data transmission line under the control of the controller, and to transmit and receive the circuit data through the wireless modem and the mobile communication network, and to receive weighing data from the packet data received by the packet module. The data analysis module calculates the amount to be paid to the power generating company by checking the amount of electricity produced by each generator through the weighing data received or received by the circuit module. If there is weighing data that is not sent by checking the stored weighing data information, According to the confirmation period of the unreceived signal generation instruction module that generates the terminal received signal and the direct measurement instruction module having a period longer than that of the non-received signal generation instruction module, the weighing data stored in the weighing information DB is not transmitted. A direct weighing instruction module for generating a weighing data request signal when there is unbalanced data, a function setting module for checking and changing the registration and setting states of the weighing server and the wireless modem, and connecting with the information DB server And a transmission and reception module for transmitting and receiving weighing data and setting information, and a control unit for controlling and controlling the whole of the weighing server.

As described above, the weighing system using the wireless communication network according to the present invention includes a metering instruction part of a wireless modem, an unreceived signal generation instruction module, and a direct metering instruction module of the server, when the metering server does not receive the metering data. In this case, the weighing data not received by the weighing server is also packetized and transmitted, and when several packet data transmissions fail, the metering data can be transmitted by circuit data transmission method to save the communication cost and reliably obtain the weighing data. It works.

In addition, the present invention has an effect capable of communicating with a power meter having a communication standard, such as RS-232C, RS-422C, RS-485C, including a communication driver.

In addition, the present invention can communicate with a power meter having a variety of communication protocols, including a protocol conversion unit, and can upgrade the communication protocol of a new standard including a function setting unit and an upgrade unit to communicate with a power meter of a new communication standard It works.

In addition, the present invention has the effect of checking the communication state and the power supply state, humidity, temperature and the like of the wireless modem power meter and metering server through the display unit or the metering server of the wireless modem. .

Hereinafter, a weighing system and a weighing method using a wireless communication network according to the present invention will be described in detail with reference to the accompanying drawings. It should be noted that the same elements in the figures are represented by the same numerals wherever possible. In addition, detailed descriptions of well-known functions and configurations that may unnecessarily obscure the subject matter of the present invention will be omitted. Unless otherwise defined, all terms in the specification are the same as the general meaning of the terms understood by those skilled in the art and if they conflict with the meaning of the terms used herein. In accordance with the definitions used herein.

1 is an overall configuration diagram of a metering system using a wireless communication network according to an embodiment of the present invention, Figure 2 is a block diagram of a wireless modem of a metering system using a wireless communication network according to an embodiment of the present invention, Figure 3 Is a block diagram of a meter indicating unit of a wireless modem according to an embodiment of the present invention, FIG. 4 is a block diagram of a storage unit of a wireless modem according to an embodiment of the present invention, and FIG. 5 is according to an embodiment of the present invention. 6 is a block diagram of a metering server of a metering system using a wireless communication network according to an embodiment of the present invention, and FIG. 7 is a metering using a wireless communication network according to an embodiment of the present invention. A block diagram of the system's information DB server.

1 to 7, a metering system using a wireless communication network is a system for remotely measuring and calculating the amount of electricity produced by a generator of a power plant, a power meter 11, a wireless modem 12, a mobile communication network 13, A router 14, a server side wireless modem 15, a metering server 16, an information disclosure web server 17, an information DB server 18, and a PC 19 are included.

The electricity meter 11 measures the amount of electricity produced from the generator of the power plant in a digital manner and stores it in a memory, and receives a metering data transmission command to measure the amount of electricity (meaning the amount of electricity generated by the generator) along with the electricity meter 11. Send a unique ID of. The electricity meter 11 should measure weighing data every 5 minutes and store the weighing data for 50 days or more. For example, Landis + Gyr, Actaris, LSIS, ABB class 0.5 meter 11, and Power measurement, Actaris, Landis + Gyr class 0.2 meter 11, and the like can be used.

The wireless modem 12 communicates with the electricity meter 11 using a communication method such as RS-485C, and transmits a metering data transmission command to the electricity meter 11 to meter data from the electricity meter 11. And the electricity meter ID information is packetized in a predetermined format and transmitted to the metering server 16 through the mobile communication network 13. In addition, the wireless modem 12 transmits and receives circuit data through a mobile communication network 13 line established by the metering server 16. The wireless modem 12 includes a power meter communication unit 121, a meter indicating unit 122, a storage unit 123, a power supply unit 124, a display driver 125, a temperature and humidity detector 126, and a wireless communication unit 127. , A function setting and upgrading unit 128, and a controller 129.

The electricity meter communication unit 121 transmits a meter data transmission command to the electricity meter 11 and receives meter data and a unique meter ID from the electricity meter 11. The electricity meter communication unit 121 is RS-232C or RS. A communication driver for adjusting data input or output so as to use a communication method such as -422C, RS-485C, a protocol processing unit for converting into a standard protocol so as to communicate with a power meter having a different communication protocol, and the power meter ( 11) and a buffer unit for controlling the operation speed and timing during communication of the wireless modem 12.

The metering instruction unit 122 is configured to collect the metering data measured by the electricity meter 11 and request transmission to the metering server 16 according to the automatic metering cycle or the instruction of the metering server 16, automatic metering module 1221 ), An untransmitted data transmission instruction performing module 1222, and a direct weighing performing module 1223.

The automatic weighing module 1221 is configured to request collection of weighing data from the electricity meter 11 and transmission of packetized weighing data to the weighing server 16 according to a preset weighing cycle (hereinafter, referred to as an automatic weighing cycle). For example, when the wireless modem 12 is set to have automatic metering at an interval of 1 hour, the automatic metering module 1221 is operated every 1 hour so that the wireless modem 12 receives the metering data and the electricity meter from the electricity meter 11. The ID is collected, packetized, and transmitted to the metering server 16.

When the wireless modem 12 receives the non-measurement data non-receipt signal from the metering server 16, the untransmitted data transmission instruction performing module 1222 packetizes the metered data not transmitted at the next automatic weighing. Is configured to instruct the automatic weighing module 1221 to be transmitted.

The direct weighing module 1223 receives the metering data request signal from the metering server 16 when the radio modem 12 receives the metering data request signal from the electricity meter 11 regardless of the automatic metering period of the radio modem 12. It is a configuration for requesting the transmission of the weighing data through the circuit of the circuit data transmission method set between the collection and the wireless modem 12 and the metering server (16).

The storage unit 123 is configured to store basic information of the electricity meter 11, the wireless modem 12, the metering server 16, and the metering data transmitted and received by the wireless modem 12. Setting information memory 1231 storing information, metering data transmission cycle, metering server 16 information, and the like, metering data received from the meter 11 and transmitted to the metering server 16, metering ID and A metering data memory 1231 for storing the results, a protocol memory 1233 for storing the communication protocol of each power meter 11, and a control program memory 1234 in which a program for controlling the radio modem 12 is stored; It includes. For example, the protocol memory 1233 stores communication protocols such as DLMS (IEC 62056), LGRW, Ain +, and Ion.

The power supply unit 124 supplies power to the wireless modem 12 and checks the state of the power supplied to the power supply unit connected to a power connector (not shown) of the wireless modem 12 to supply power. 1241, a preliminary power supply unit 1242 capable of charging to supply the preliminary power when no power is supplied by the power supply unit 1241, the voltage, frequency, etc. of the power supplied by the power supply unit 1241; And a power state display unit 1243 for generating a warning signal when the quality of the power supply does not reach the required power quality. The warning signal generated by the power state display unit 1243 is displayed on the display unit 1251 under the control of the control unit 129 and transmitted to the metering server 16.

The display driver 125 serves to drive a display unit 1251 which displays a communication state between the electricity meter 11 and the metering server 16 of the wireless modem 12. The operation of the display driver 125 is managed and controlled by the controller 129. The display unit 1251 is composed of an OLED display device, and thus it is preferable to realize high discrimination power because the display unit 1251 has high brightness and can express distinct characters or colors regardless of visual position or reflection of sunlight.

The temperature and humidity detector 126 may cause an error in communication with the electricity meter 11 and the metering server 16 when the temperature and humidity outside the wireless modem 12 may be accommodated. Detects the temperature and humidity around the wireless modem 12 and generates a warning signal outside the range of acceptable temperature and humidity. The warning signal is displayed on the display 1251 under the control of the controller 129 and transmitted to the metering server 16.

The wireless communication unit 127 transmits and receives packet data and circuit data to and from the metering server 16 through the mobile communication network 13, and controls the operation speed and timing of data exchanged with the metering server 16. Do it.

The function setting and upgrading unit 128 performs a function of checking and changing the setting state of the wireless modem 12, and according to the setting information transmitted by the metering server 16, The setting state may be changed or the setting state may be checked and changed through the PC 19 connected to the external connection port (not shown) of the wireless modem 12. The communication protocol of the new standard can be upgraded through the function setting and upgrading unit 128, so that the wireless modem 12 can also communicate with the electricity meter 11 of the new communication standard.

The control unit 129 is the electricity meter communication unit 121, the meter indicating unit 122, the storage unit 123, the power supply unit 124, the display driver 125, the temperature and humidity detection unit 126, the wireless communication unit 127 , The function setting and upgrade control unit 128, the overall control, the packet conversion of the weighing data, the storage and management of information in the storage unit 123, the transmission and reception of information through the electricity meter communication unit 121 or the wireless communication unit 127 And so on.

The mobile communication network 13 exchanges data between the wireless modem 12 and the metering server 16 through a packet data transmission scheme and a circuit data transmission scheme. Since the mobile communication network 13 uses a CDMA network provided by a communication service provider, a detailed description thereof will be omitted. The circuit data transmission method is charged according to the usage time when the circuit data is transmitted through the mobile communication network 13, whereas the packet data transmission method is charged according to the amount of data. 16, the packet data transmission method can reduce the communication cost.

The router 14 receives the packet data transmitted from the wireless modem 12 through the mobile communication network 13, extracts the location of the packet, specifies the best path for the location, and meters the data packet along the path. Turn to the server. The server-side wireless modem 15 receives the circuit data transmitted from the mobile communication network 13 and transmits it to the metering server 16 or transmits the circuit data transmitted from the metering server 16 through the mobile communication network 13. Transmission to the wireless modem 12.

The metering server 16 is connected to the router 14 and the server-side wireless modem 15, respectively, and stores and stores various programs necessary for operating a weighing system using a wireless communication network. , Packet module 161, circuit module 162, data analysis module 163, unreceived signal generation instruction module 164, direct measurement instruction module 165, function setting module 166, transmission and reception module 167, The control unit 168 is included.

The packet module 161 is connected to the router 14 to receive the packet data transmitted by the wireless modem 12 through the mobile communication network 13, and the traffic of the packet data transmitted by the wireless modem 12. To prevent. In the metering system using the wireless communication network of the present invention, since one metering server 16 collects electricity production information of a plurality of generators, the metering server 16 stores packetized metering data transmitted from the radio modem 12 on each generator side. The packet module 161 is used because traffic may occur in the process of receiving a) and may hinder smooth collection of metering data.

The circuit module 162 is connected to the server-side wireless modem 15, and establishes a circuit data transmission line under the control of the control unit 168 through the wireless modem 12 and the mobile communication network (13). Send and receive data. The circuit module 162 checks that the non-received signal generation instruction module 164 has transmitted the weighing data non-received signal to the control unit 168 by confirming that there is weighing data that has not been transmitted until a preset time. In response to the circuit setting command of the controller 168, a circuit of a circuit data transmission method is set, and a non-measured data reception signal is transmitted to the wireless modem 12. In addition, the circuit module 162 confirms that the direct measurement instruction module 165 transmits the weighing data request signal to the control unit 168 by checking that the weighing data DB has not been transmitted until a preset time exists. A circuit data transmission method is set by a circuit setting command of the controller 168 to transmit a weighing data request signal, and the metering data is transmitted from the wireless modem 12 in a circuit data method. In addition, when the circuit module 162 changes the setting of the metering system using the wireless communication network through the function setting module 166, the circuit module 162 instructs the controller 168 to transmit the circuit of the circuit data transmission method. Set to transmit the information about the setting change to the wireless modem (12).

The data analysis module 163 extracts the metering data from the packet data received by the packet module 161 or checks the amount of electricity produced by each generator through the metering data received by the circuit module 162 to the power generation company. A module for calculating the amount to be paid, the information on the amount calculated by the data analysis module 163 is stored in the billing DB under the control of the controller 168, and is transmitted to the information disclosure web server 17.

The unreceived signal generation instruction module 164 checks the weighing data information stored in the weighing information DB according to a preset cycle (hereinafter, referred to as 'confirmation period of the unreceived signal generation instruction module') and checks for the existence of untransmitted weighing data. In case of confirmation, the control unit 168 transmits a non-measurement data reception signal. The confirmation period of the unreceived signal generation indicating module is preferably the same as that of the automatic weighing period.

The direct weighing instruction module 165 checks the weighing data information stored in the weighing information DB according to a preset cycle (hereinafter referred to as 'check cycle of the direct weighing instruction module') and confirms the existence of the unsent weighing data. The control unit 168 transmits a weighing data request signal. Preferably, the confirmation period of the direct measurement instruction module is longer than that of the non-received signal generation instruction module. The confirmation period of the direct measurement instruction module 165 is longer than the confirmation period of the non-received signal generation instruction module, when the direct measurement instruction module 165 checks the measurement data not transmitted to the measurement server 16. Since the data method requires a lot of communication costs by requesting the weighing data, the unreceived signal generation instruction module 164 checks the weighing data not transmitted to the weighing server 16, and transmits the weighing data again several times by the packet data transmission method. This is to transmit the weighing data by the circuit data method when the packet data transmission method is impossible after the attempt.

The function setting module 166 checks and changes the registration and setting states of the metering server 16 and the wireless modem 12, and the metering server 16 changed by the function setting module 166. And the setting information of the wireless modem 12 is stored in the setting information DB 181 under the control of the control unit 168 and transmitted to the wireless modem 12 in a circuit data transmission method.

The transmission / reception module 167 is connected to the information disclosure web server 17 and the information DB server 18 to transmit and receive metering data and setting information.

The control unit 168 is the packet module 161, circuit module 162, data analysis module 163, non-received signal generation instruction module, direct measurement instruction module 165, function setting module 166, transmission and reception module ( 167) control and control the overall, circuit setting of the circuit data transmission method through the circuit module 162, receiving weighing data through the packet module 161 and the circuit module 162, information through the transmission and reception module 167 It performs functions such as sending and receiving of.

The information disclosure web server (17) is connected to the metering server (16) to receive information on the metering data managed by the metering server (16), information such as payments to be paid to the power generation company to provide a server on the Web The power generation company may check the information provided by the information disclosure web server 17 by accessing the information disclosure web server 17 by inputting a unique ID and password through a PC 19 connected to the Internet.

The information DB server 18 is a variety of information such as information generated in the process of transmitting and receiving the metering server 16 and the wireless modem 12 and setting information of the metering server 16 and the wireless modem 12 A server for storing the information includes a setting information DB 181, a metering information DB 182, an event information DB 183, and a settlement amount DB 184.

The setting information DB 181 stores setting information of the metering server 16 and the wireless modem 12, for example, the specification of the wireless modem 12, the metering cycle of the radio modem 12, the metering server ( The weighing data confirmation cycle of 16) is stored. The metering information DB 182 stores metering data and a meter ID uniquely received by the metering server 16 from the wireless modem 12. The event information DB 183 stores information for which the metering server 16 has not received metering data according to the automatic metering cycle of the wireless modem 12. The settlement information DB stores the information for calculating the amount to be paid to the power generation company by checking the metering data received by the metering server 16.

8 is a flowchart showing an automatic weighing step in a weighing method using a wireless communication network according to the present invention, FIG. 9 is a flowchart showing a required weighing step in a weighing method using a wireless communication network according to the present invention, and FIG. Flow chart showing a direct weighing step in the weighing method using a wireless communication network according to the invention.

1 to 10, the weighing method of the weighing system using the wireless communication network, the weighing method of the weighing system using the wireless communication network is the automatic weighing step (S11), the required weighing step (S12), the direct weighing step (S13) It includes.

The automatic metering step (S11) receives the metering data and the information of the electricity meter ID from the electricity meter 11 according to the automatic metering cycle of the wireless modem 12 to packetize the information in a predetermined format and transmit it to the server. In the step, the automatic measurement instruction step (S111), the automatic measurement data collection step (S112), and the automatic measurement data transmission step (S113).

In the automatic weighing instruction step S111, when the automatic weighing module 1221 reaches the weighing time according to the automatic weighing cycle stored in the setting information memory 1231, the weighing data is collected and packetized weighing data to the weighing server 16. In this step, an automatic measurement request signal for requesting transmission is generated.

In the automatic measurement data collection step (S112), when the automatic measurement request signal is generated in the automatic measurement instruction step (S111), the electricity meter communication unit 121 transmits a measurement data request signal to the electricity meter by the control of the control unit from the electricity meter. Receiving the metering data and electricity meter ID corresponding to the current metering cycle.

In the automatic measurement data transmission step (S113), the measurement data and the electricity meter ID received in the automatic measurement data collection step (S112) are packetized under the control of a controller to use the mobile communication network 13 through the wireless communication unit 127. It is the step of transmitting to the metering server (16).

In the request weighing step (S12), when the weighing server 16 confirms the existence of the weighing data not transmitted to the weighing server 16, the meter data transmission method transmits a non-received weighing data signal to the wireless modem 12 by a circuit data transmission method. The wireless modem 12 receives the measurement data non-receipt signal, collects the measurement data not transmitted to the weighing server 16 at the next automatic weighing, packetizes the packet in a predetermined format, and transmits it to the weighing server 16. In the non-received signal generation instruction module 164, the measurement data checking step (S121), the unreceived signal transmission step (S122), the required weighing instruction step (S123), the required weighing data collection step (S124), the required weighing data transmission step ( S125).

In the step S121 of checking the non-received signal generation instruction module 164, the non-received signal generation instruction module 164 searches for the weighing information DB 182 according to the confirmation period of the non-received signal generation instruction module and is not transmitted. In the case where the existence of the weighing data is confirmed, the weighing data non-received signal is generated. The confirmation period of the unreceived signal generation instruction module 164 may be the same as the automatic measurement period of the wireless modem 12.

In the non-received signal transmission step (S122), when the measurement data non-received signal is generated in the measurement data check step (S121) of the non-received signal generation instruction module 164, the circuit module 162 transmits circuit data under control of a controller. The method sets a line and transmits an unreceived weighing data signal to the wireless modem 12.

In the request weighing instruction step (S123), when the wireless modem 12 receives the non-measurement data signal, the untransmitted data transmission instruction performing module 1222 is not transmitted in the entire weighing cycle during the current weighing cycle. It is a step of generating the required weighing request signal to receive the data and packetize and transmit it together with the current weighing data.

In the request weighing data collecting step (S124), when the request weighing request signal is generated in the request weighing instruction step, the electricity meter communication unit 121 controls the control of the controller and the meter data and the current cycle are not transmitted to the metering server 16. It is a step of receiving the weighing data request signal corresponding to the electricity meter to the metering data not transmitted to the metering server 16 and the metering data corresponding to the current period from the meter.

The required weighing data transmitting step (S125) packetizes the weighing data not transmitted to the weighing server 16 received in the requesting weighing data collecting step, the weighing data corresponding to the current period, and the electricity meter ID under the control of the controller. A step of transmitting to the metering server 16 using the mobile communication network 13 through the wireless communication unit 127.

If the weighing server 16 fails to receive the weighing data despite the request weighing step, the request weighing step is performed again. The operation principle is the same as the previous weighing step but is not transmitted to the weighing server 16. There is a difference in accumulating non-measured data, received from the electricity meter 11, packetized, and transmitted to the metering server 16.

In the direct weighing step S13, when the weighing server 16 confirms the existence of the weighing data not transmitted to the weighing server 16, the weighing data request signal is transmitted to the wireless modem 12 by a circuit data transmitting method. The wireless modem 12 receives the weighing data request signal, collects the weighing data not transmitted to the weighing server 16 regardless of the automatic weighing cycle, and transmits the weighing data to the weighing server 16 by the circuit data method. The weighing data checking step (S131), the weighing data request signal transmission step (S132), the direct weighing command step (S133), the direct weighing data collection step (S134), the direct weighing data transmission step (S135) of the direct weighing instruction module 165. ).

The step of checking the weighing data of the direct weighing instruction module 165 (S131) is that the direct weighing instruction module 165 searches for the weighing information DB 182 according to the confirmation period of the direct weighing instruction module, so that In the case of confirming the existence, it is the step of generating the request signal for weighing data. Preferably, the confirmation period of the direct measurement instruction module is longer than that of the non-received signal generation instruction module.

The weighing data request signal transmitting step (S132) is performed when the weighing data request signal occurs in the weighing data checking step (S131) of the direct weighing instruction module 165. The transmission method sets a line and transmits a metering data request signal to the radio modem 12.

In the direct weighing instruction step S133, when the wireless modem 12 receives the weighing data request signal, the direct weighing module 1223 performs a weighing server irrespective of the automatic weighing cycle of the wireless modem 12. It is a step of generating a direct weighing request signal to receive the weighing data not transmitted in 16) and to transmit it by the circuit data transmission method.

In the direct weighing data collection step (S134), when the direct weighing request signal is generated in the direct weighing instruction step, the electricity meter communication unit 121 controls the weighing data request signal that is not transmitted to the weighing server 16 under the control of the controller. It is a step of receiving the metering data not transmitted to the metering server 16 from the meter by transmitting to the electricity meter.

In the direct weighing data transmitting step S135, the metering data and the electricity meter ID not transmitted to the weighing server 16 received in the direct weighing data collecting step S134 are moved through the wireless communication unit 127 under the control of a controller. It is a step of transmitting to the metering server 16 by the circuit data transmission method using the communication network (13).

Both the required weighing step (S12) and the direct weighing step (S13) both instruct the wireless modem 12 when the weighing server 16 does not receive the weighing data and not weigh the weighing server 16. In the method for receiving data, the request weighing step (S12) is packetized together with the weighing data that the wireless modem 12 has not received at the weighing server 16 at the next period of automatic weighing. In the direct weighing step (S13), the wireless modem 12 collects the weighing data not received by the weighing server 16 immediately, regardless of the automatic weighing cycle. There is a difference in the method of transmission to the weighing server 16 as a transmission method. Since the period for checking whether the weighing data has been transmitted to the weighing server 16 in the direct weighing step is longer than the period for checking that the weighing data has been transmitted to the weighing server 16 in the demand weighing step, one direct weighing step is performed. There are several required weighing steps during the process.

This is because the reception of the weighing data of the weighing server 16 is not urgently necessary to receive the weighing data at a predetermined time compared to the importance of the weighing data receiving result, and the circuit data communication, which requires a large communication cost even though the packet data communication was temporarily impossible. This is because it is inefficient to receive the weighing data directly in the method. Therefore, the weighing system and the weighing method using the wireless communication network packetizes and transmits the weighing data not received by the weighing server 16 at the next automatic weighing when the weighing server 16 does not receive the weighing data. When several packet data transmissions fail, it is possible to securely obtain the metering data while saving the communication cost by transmitting the metering data by the circuit data transmission method.

In the above, the applicant has described preferred embodiments of the present invention, but these embodiments are only one embodiment for implementing the technical idea of the present invention and should be construed as belonging to the present invention.

1 is an overall configuration diagram of a metering system using a wireless communication network according to an embodiment of the present invention.

Figure 2 is a block diagram of a wireless modem of the metering system using a wireless communication network according to an embodiment of the present invention.

3 is a block diagram of a meter indicating unit of a wireless modem according to an embodiment of the present invention.

4 is a block diagram of a storage unit of a wireless modem according to an embodiment of the present invention.

5 is a block diagram of a wireless modem power unit according to an embodiment of the present invention.

6 is a block diagram of a metering server of a metering system using a wireless communication network according to an embodiment of the present invention.

7 is a block diagram of an information DB server of a metering system using a wireless communication network according to an embodiment of the present invention.

8 is a flowchart illustrating an automatic weighing step in a weighing method using a wireless communication network according to the present invention.

9 is a flowchart illustrating a required weighing step in a weighing method using a wireless communication network according to the present invention;

10 is a flowchart showing a direct weighing step in the weighing method using a wireless communication network according to the present invention.

* Explanation of the main symbols used in the drawings

11: power meter 12: wireless modem 13: mobile network

14: router 15: server-side wireless modem 16: metering server

17: Information Disclosure Web Server 18: Information DB Server 19: PC

121: power meter communication unit 122: meter indicating unit 123: storage unit

124: power supply unit 125: display driving unit 126: humidity and temperature sensing unit

127: wireless communication unit 128: function setting and upgrade unit

129: control unit 161: packet module 162: circuit module

163: data analysis module 164: unreceived signal generation instruction module 165: direct weighing instruction module

166: function setting module 167: transceiver module 168: control unit

Claims (3)

A power meter for measuring an amount of electricity produced by a generator of a power plant and storing the amount of electricity in a memory, receiving a weighing data transmission command from a wireless modem, and transmitting the weighing data stored in the memory to the wireless modem; A wireless modem communicating with the electricity meter using a predetermined communication method, transmitting a metering data transmission command to the electricity meter, and transmitting the metering data received from the electricity meter by a packet data transmission method or a circuit data transmission method using a mobile communication network; ; A router which receives the packet data transmitted by the wireless modem through the mobile communication network, extracts the location of the packet, and transmits it to a metering server; A server-side wireless modem for transmitting and receiving circuit data with the wireless modem through the mobile communication network; A metering server connected to the router and the server-side radio modem, respectively, for managing and interpreting metering data received from the radio modem, and transmitting setting information and metering data non-received signal of the radio modem; And an information DB server for storing information generated in the process of transmitting and receiving the metering server and the wireless modem and setting information of the metering server and the wireless modem. The wireless modem As a standard protocol to communicate with the electricity meter and the communication driver to control the data input and output to communicate using the communication method of RS-232C, RS-422C, RS-485C, and the electricity meter having a different communication protocol A power meter communication unit including a protocol processing unit for converting and a buffer for adjusting an operation speed and a timing when the power meter communicates with the wireless modem; Automatic weighing module for instructing automatic collection of weighing data from electricity meter and transmission of packetized weighing data to metering server according to automatic weighing cycle, and next automatic weighing when wireless modem receives no weighing data from metering server. A non-transmitted data transmission instruction performing module for instructing packetized data to be transmitted together with the non-transmitted data at the time, and correlating with the automatic weighing period of the wireless modem when the wireless modem receives a weighing data request signal from the metering server. A metering instruction unit including a direct metering module which collects metering data not transmitted to the metering server from the meter and directs the metering server to the circuit data transmission method; A storage unit for storing basic information of the power meter, the wireless modem, the metering server, and the metering data transmitted and received by the wireless modem; A power supply unit supplying power to the wireless modem and checking a state of the supplied power; A display driver for driving a display unit to display a communication state and an operation state of the wireless modem; A temperature and humidity detection unit for sensing a temperature and humidity around the wireless modem and generating a warning signal when the wireless modem is out of a range of acceptable temperature and humidity; A wireless communication unit for transmitting and receiving packet data and circuit data to and from the metering server through the mobile communication network; A function setting and upgrading unit performing a function of checking and changing a setting state of the wireless modem and performing a function of upgrading a communication protocol of a new standard; Metering system using a wireless communication network comprising a control unit for controlling the wireless modem. delete According to claim 1, wherein the metering server A packet module connected to the router to receive packet data and controlling traffic of the packet data; A circuit module connected to the server-side wireless modem to establish a circuit data transmission line under the control of a controller and to transmit and receive circuit data through the wireless modem and a mobile communication network; A data analysis module which extracts metering data from the packet data received by the packet module or checks the amount of electricity generated by each generator based on the metering data received by the circuit module to calculate the amount to be paid to the power generation company; An unreceived signal generation instruction module that checks the weighing data information stored in the information DB according to a certain period and generates a weighing data non-received signal when there is weighing data that has not been transmitted; According to the confirmation period of the direct weighing indication module having a period longer than the confirmation period of the non-received signal generation indication module, it checks the information of the weighing data stored in the weighing information DB and generates a request signal for weighing data when there is undelivered quantity data. Direct measurement instruction module, A function setting module for checking and changing the registration and setting states of the metering server and the wireless modem; A transmission / reception module connected to the information DB server for transmitting and receiving weighing data and setting information; Weighing system using a wireless communication network comprising a control unit for controlling the overall control of the metering server.

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