KR101151673B1 - Remote automatic meter reading system - Google Patents

Abstract

The present invention is to receive the meter data from the mother and child reader to easily transmit to the remote meter reading center through a wireless communication network or power line communication network to improve the convenience and safety of the meter reading, and wireless communication and power line communication (PLC) technology Its characteristics are to provide a remote meter reading system using a mother and child meter reader that can be harmonized properly to build an economic system.

To this end, the present inventors have a remote meter reading system using a mother and child meter reader, a remote meter reading center for reading and processing the meter reading data, the mother meter and the high-voltage power to communicate with the remote meter reading center CDMA A main switchgear that opens and closes, monitors and protects the circuit to supply the converted low voltage power to the electric power supply by converting it into low voltage power through the peripheral voltage, and a plurality of electric facilities driven by the low voltage power supplied from the main switchgear. Comprising a plurality of magnetic meter to read the power to the, the mother weighing machine is provided with a mother master communication unit for receiving the metered data through the magnetic meter, each of the plurality of magnetic weighing machine It is provided with a slave communication unit capable of interconnecting and communicating with the master communication unit A.

Description

Remote meter reading system using mother-and-child meter reading machine {Remote Automatic Meter Reading System}

The present invention relates to a remote meter reading system using a mother and child meter reader, in particular to receive the meter data from the mother and child reader to easily transmit to a remote meter reading center through a wireless communication network or power line communication network to improve the convenience and safety of the meter reading In addition, the present invention relates to a remote meter reading system using a mother-measured meter to establish an economical system by properly matching the technology of wireless communication and power line communication (PLC).

In general homes or companies, a meter is installed to accumulate energy consumption, and the meter is a mechanical meter that detects the rotation of the dial to generate a predetermined pulse signal and counts the generated pulses to record and display the accumulated energy usage. There is an electronic meter that calculates energy consumption by applying voltage and current of three phases. Recently, the use of electronic meters for accurate counting of energy consumption is increasing.

In addition, a remote meter reading system has been developed for remote meter reading with a computer using wired / wireless communication media to eliminate the hassle of visiting the meter installation site and collecting meter reading data counted by the meter.

In the conventional remote meter reading system, a remote meter reading modem is used to receive meter reading data from an electronic meter and relay it to a remote meter reading center by a specific signal (for example, a meter reading request signal) from a remote meter reading center. However, since it only plays a role of relaying data exchange between the remote metering center and the electronic metering period, there is no big problem when the distance between the master meter and the meter is close to each other and located in the same space. If the distance between the and the weighing machine is more than a certain distance or the space itself is separated or blocked, there is a problem that the additional repeater should be installed, and the additional cost caused by the installation of the repeater.

In addition, a power line cable of a certain length should be installed from the mother meter side to the low voltage main switchboard, and there is a problem in that an additional cost is generated due to the cable installation, and there is a problem in electrical safety.

The present invention has been made to solve the problems of the prior art as described above has the following object.

The present invention is to receive the meter data from the mother and child reader to easily transmit to the remote meter reading center through a wireless communication network or power line communication network to improve the convenience and safety of the meter reading, and wireless communication and power line communication (PLC) technology The purpose of the present invention is to provide a remote meter reading system using a mother-and-child meter that allows an economical system to be constructed in proper harmony.

Another object of the present invention is to provide a remote meter reading system using a mother and child meter reader to improve the overall efficiency of the remote meter reading system to maximize the satisfaction and reliability of the communication method used by installing it.

The remote meter reading system using a mother-in-law meter of the present invention for achieving the above object is a remote metering center for reading and processing the meter reading data, and a mother meter for communicating with the remote metering center by CDMA to transmit the metered data And a main switchgear that opens, monitors, and protects a circuit so as to receive high voltage power and convert it into low voltage power through a peripheral voltage to supply the converted low voltage power to an electrical facility, and to drive the low voltage power supplied from the main switchgear. It includes a plurality of magnetic meter to read the power for a plurality of electrical equipment, the mother weighing machine is provided with a master communication unit for receiving the metered data through the magnetic meter, each of the plurality of weighing machine Slave communication unit that can communicate with the master communication unit of the It is made non.

Accordingly, the master communication unit is configured to enable radio communication (RF) communication and power line communication (PLC) communication, and the slave communication unit of any one of a plurality of self-weighers communicating with the master communication unit is a master communication unit. will be.

The master communication unit and the master communication unit are configured to communicate with each other by RF communication, which is wireless communication, and the master communication unit and the slave communication unit of the self-meter are configured to communicate with each other by PLC communication, which is power line communication.

In addition, the master communication unit and the master communication unit is made to communicate with each other by PLC communication, which is power line communication, and the master communication unit and the slave communication unit of the weighing device is made to communicate with each other by RF communication which is wireless communication.

In addition, the master communication unit and the master communication unit is a wireless communication RF communication and the power line communication method PLC communication is made possible, the master communication unit and the slave communication unit wireless communication RF communication and power line communication PLC communication is possible. To be done.

By providing the remote meter reading system as described above the following effects occur.

First, it receives the meter data from the mother and child meter reader to be easily transmitted to the remote meter center through the wireless communication network or power line communication network has the effect of improving the convenience and safety for the meter reading.

Second, there is an effect that an economical system can be constructed by appropriately combining the technologies of wireless communication and power line communication (PLC).

Third, the overall efficiency of the remote meter reading system is improved, so that the satisfaction and reliability of communication using the same can be maximized.

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

Figure 1 shows a block diagram for schematically illustrating a remote meter reading system using a mother meter reader according to the present invention.

Referring to the drawings, the remote meter reading system using a mother meter reader of the present invention is composed of a remote meter reading center 10, the mother weighing machine 20, the peripheral pressure 30, the main switchgear 40 and the magnetic weighing device (50) .

The remote meter reading center 10 reads and processes the meter reading data transmitted through the meter.

In this case, the remote meter reading center 10 and the mother meter 20 communicate with each other using a CDMA (Code Division Multiple Access) network. In the present invention, the present invention is limited to CDMA, but the GSM (Global System for Mobile Telecommunication) One of all wireless mobile communication networks currently under development or commercially available in the future, such as a network, a wideband code division multiple access (WCDMA) network, and a WiBro network, may be applied. Be aware that they belong to the technical category.

The main switchboard 40 receives a high voltage power (for example, 22,900 V) and converts the low voltage power converted into low voltage power (for example, 220 V to 380 V) through the peripheral pressure transformer 30 to convert a street lamp, a drain pump, or the like. The circuits will be opened, closed, monitored and protected to supply the same electrical equipment to the mains.

The electric power for a plurality of electrical equipments driven by the low voltage power supplied from the main switchboard 40 will be read through the magnetic meter 50.

At this time, the mother weigher 20 is provided with a mother master communication unit 21, which is to be able to communicate with each other so that the meter 50 and the meter reading data.

In addition, each of the plurality of self-weighers 50 is provided with a slave communication unit 52, which is connected to the master communication unit 21 of the mother meter 20 to communicate with each other.

At this time, any one of the plurality of magnetic weighing unit 50 to communicate with the master communication unit 21 to communicate with the slave communication unit 52 is made of a master communication unit 51, the master communication unit 51 And the slave communication unit 52 can communicate with each other.

Accordingly, each of the master communication unit 21, the master communication unit 51, and the slave communication unit 52 are configured to enable RF communication, which is wireless communication, and PLC communication, which is a power line communication method.

That is, when the master communication unit 21 and the master communication unit 51 communicate with each other by RF communication, which is wireless communication, the slave communication unit 52 of the master communication unit 51 and the self-measurement unit PLC communication in power line communication Will communicate with each other.

In addition, when the master communication unit 21 and the master communication unit 51 communicate with each other by PLC communication, which is power line communication, the master communication unit 51 and the slave communication unit 52 of the self-meter 50 communicate wirelessly. RF communication is to communicate with each other.

Accordingly, when the master communication unit 21 and the master communication unit 51 select and execute any one of wireless communication, RF communication or power line communication, PLC communication, the master communication unit 51 and the slave communication unit are implemented. (52) It is also possible to communicate by selecting any one of the radio communication RF communication or power line communication PLC communication, and to perform the wireless communication RF communication and power line communication PLC communication at the same time for accurate reading. That is, when an error or an error occurs in any one of the above communication methods, the meter reading data can be transmitted through the other communication method.

In addition, the remote meter reading system using the mother and child meter reader according to the present invention is implemented by combining a wireless communication technology and a PLC technology, as shown in Figure 2, which is mainly a large-scale residential complex, such as apartment complex or large mall The system is introduced in the at least one self-testing instrument (200, 300_1, for branching from the mother tester 100 and the main switchboard to the high pressure primary meter transformer (Metering Out Fit, MOF) of the complex to use as a common power source) 300_2, ..300_n) is to be applied to the power equipment consisting of the automatic reading of the mother and self-reading meter at the remote meter reading center.

Thus, the mother meter 100 is installed in the high-pressure primary side MOF, and communicates with the upper meter reading center through a communication module (CDMA, optical, ADSL, Ethernet, etc.) to collect the mother meter and the magnetic meter meter reading And the master master using a short range wireless communication method (Zigbee, RF, IEEE 802.11a / b / g, Bluetooth, etc.) with the lower master magnetic meter reader 200 through a communication module. The meter reading data including the meter reading data of the meter reading device 200 (300_1, 300_2, ... 300_n) will be collected.

At this time, the internal configuration of the mother tester 100 is composed of a metering unit, a storage unit, a control unit, a lower communication unit and an upper communication unit as shown in FIG.

The master magnetic probe 200 is located in the same space as the mother probe 100, mainly in the main electric room of the basement of the apartment, and one of the magnetic probes installed in the shortest distance (usually around 20M straight line) with the mother probe 100 By selecting the self-testing needle 200 is selected as the self-testing needle PLC master.

At this time, the master self-reading needle 200 has two communication modules (wireless module, PLC module), the upper mother tester 100 and the lower self-testing needles (300_1, 300_2, ...., 300_n) and data It collects and transmits meter data through communication, and the wireless module applies various short-range wireless communication methods suitable for the field environment (for example, Zigbee, RF, IEEE 802.11a / b / g, Bluetooth, etc.)

The PLC module collects each meter data from the master meter reader 200 by performing PLC communication based on the lower power meter readers 300_1, 300_2, ...., 300_n and the existing power line. When the data request is stored in the upper mother reader 100, the meter reading data is transmitted to the mother reader 100 through the wireless module.

At this time, the internal configuration of the master self-tester 200 is composed of a metering unit, a PLC module, a storage unit, a control unit, a wireless module, as shown in FIG.

The above self-reading meter (300_1, 300_2, ...., 300_n) stores the meter reading value measured in the metering unit in its own storage, the latest stored when there is a request for reading data from the master self-reading meter 200 The meter information is transmitted to the PLC module unit of the master self-reader 200 through the PLC module.

Here, the internal configuration of the self-reading needle (300_1, 300_2, ...., 300_n) is composed of a metering unit, a PLC module, a storage unit, a control unit as shown in FIG.

As described above, with reference to the preferred embodiment of the present invention, those skilled in the art will be variously modified and modified within the scope of the present invention without departing from the spirit and scope of the present invention described in the claims below. It will be appreciated that it can be changed.

1 is a block diagram for schematically illustrating a remote meter reading system using a mother meter reader according to the present invention.

Figure 2 is a schematic block diagram of a remote meter reading system using a mother meter reader for explaining another embodiment according to the present invention.

FIG. 3 is a diagram illustrating an internal configuration of the mother tester shown in FIG. 2.

FIG. 4 is a diagram illustrating an internal configuration of the master magnetic needle tester shown in FIG. 2.

FIG. 5 is a diagram illustrating an internal configuration of the magnetic probe shown in FIG. 2.

<Description of the symbols for the main parts of the drawings>

10: remote meter reading center

20: mother meter

21: master communication unit

30: peripheral pressure

40: main switchboard

50: magnetic meter

51: Zamaster Communication Department

52: slave communication unit

Claims (9)

A remote metering center for reading and processing meter reading data, a mother meter for communicating the meter reading with CDMA and transmitting the metered data; A main switchgear that opens, closes, monitors, and protects the circuit to supply low voltage power to the main electric power supply; and a plurality of magnetic weighing devices that read power to a plurality of electric facilities driven by the low voltage power supplied from the main switchgear. By the way, The master weigher is provided with a master communication unit for receiving data read through the self-meter, each of the plurality of self-weighers are provided with a slave communication unit for communication by interconnecting with the master communication unit of the mother meter, The master communication unit is a wireless communication RF communication and power line communication PLC communication is made possible, and any one of a plurality of magnetic meter communication unit communicating with the master communication unit is characterized in that the master communication unit Remote metering system using a hat meter reader. delete The method of claim 1, The mother master communication unit and the master communication unit is made to communicate with each other by RF communication which is wireless communication, and the master communication unit and the slave communication unit of the self-measurement unit is characterized in that it is made to communicate with each other by PLC communication which is power line communication Remote meter reading system. The method of claim 1, The mother master communication unit and the master communication unit is made to communicate with each other by PLC communication, which is a power line communication, and the master communication unit and the slave communication unit of the self-measurement unit is characterized in that the wireless communication is made to communicate with each other by RF communication Remote meter reading system. The method of claim 1, The master communication unit and the master communication unit is made to enable the radio communication RF communication and power line communication PLC communication, the master communication unit and the slave communication unit is made to enable radio communication RF communication and power line communication PLC communication. Remote metering system using a hat meter reader, characterized in that. It is applied to the power equipment consisting of at least one self-reading needle for branching from the mother tester and the main switchboard to the high-pressure primary transformer (MOF) and used as a common power source. To be collected automatically, The mother reading instrument is installed in the high-voltage primary MOF and communicates with the upper reading center through a wired / wireless communication method through a communication module to collect the readings of the mother meter and the magnetic meter and send them to the reading center, and the lower master part through the communication module. The meter reads the meter reading data including the meter reading data of the master reading meter by using a short range wireless communication method, The master probe reader is located in a space where the mother probe reader is located, selects one of the probe readers installed at the shortest distance with the mother probe reader, and selects the corresponding probe reader as the PLC reader, and the master probe reader has two communication modules. (Wireless module, PLC module) is built-in to collect and transmit reading data through data communication with upper and lower mother needle readers, and wireless module adopts short range wireless communication method, PLC module has lower one PLC communication is performed on the basis of the existing power lines and the existing power lines, and each meter data is collected from the master self-reader and stored in the storage unit. Remote meter reading system using a cap reader, characterized in that for transmitting. delete delete The method of claim 6, The self-reading meter stores the meter reading value measured by the metering unit in its own storage, and transmits the latest meter information stored when the master self-reading meter requests a reading data to the PLC module unit of the master self-reading meter through the PLC module. Remote metering system using a hat meter reader, characterized in that.

Images