KR20170008049A - Remote electric energy metering system - Google Patents

Remote electric energy metering system Download PDF

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Publication number
KR20170008049A
KR20170008049A KR1020150099287A KR20150099287A KR20170008049A KR 20170008049 A KR20170008049 A KR 20170008049A KR 1020150099287 A KR1020150099287 A KR 1020150099287A KR 20150099287 A KR20150099287 A KR 20150099287A KR 20170008049 A KR20170008049 A KR 20170008049A
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KR
South Korea
Prior art keywords
data
meter
display
watt
hour meter
Prior art date
Application number
KR1020150099287A
Other languages
Korean (ko)
Inventor
백승호
Original Assignee
엘에스산전 주식회사
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Publication date
Application filed by 엘에스산전 주식회사 filed Critical 엘에스산전 주식회사
Priority to KR1020150099287A priority Critical patent/KR20170008049A/en
Publication of KR20170008049A publication Critical patent/KR20170008049A/en

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R22/00—Arrangements for measuring time integral of electric power or current, e.g. electricity meters
    • G01R22/06—Arrangements for measuring time integral of electric power or current, e.g. electricity meters by electronic methods
    • G01R22/061—Details of electronic electricity meters
    • G01R22/063—Details of electronic electricity meters related to remote communication
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R21/00—Arrangements for measuring electric power or power factor
    • G01R21/001—Measuring real or reactive component; Measuring apparent energy
    • G—PHYSICS
    • G08—SIGNALLING
    • G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
    • G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
    • G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
    • G—PHYSICS
    • G08—SIGNALLING
    • G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
    • G08C19/00—Electric signal transmission systems
    • G08C19/02—Electric signal transmission systems in which the signal transmitted is magnitude of current or voltage

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)

Abstract

A power meter remote meter reading system capable of measuring an accumulated power amount of an accurate value from a watt hour meter is provided. The power meter remote meter reading system includes a watt hour meter for generating display data and overlap data according to the reference level from the measured power consumption amount and a meter reading server for receiving the display data and the overlap data from the watt hour meter and calculating the accumulated power amount of the watt hour meter .

Description

Remote electric energy metering system

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power meter remote meter reading system, and more particularly, to a power meter remote meter reading system capable of reading an accurate amount of accumulated power from an electronic watt meter.

A watt-hour meter is a device that measures electricity usage. It is installed whenever electricity is used, and it is a standard device that measures the amount of electricity used and charges the user.

These watt-hour meters are classified into mechanical watt-hour meters and electronic watt-hour meters according to the operation method. A mechanical watt-hour meter is a watt-hour meter capable of displaying the accumulated electric power by a plurality of numerical dials that are mechanically connected to a rotating disk that is magnetically inducted according to the used electric power and rotates mechanically. The electronic watt-hour meter is a watt-hour meter capable of calculating the used electric power amount of digital data from the use electric power detected by the detection means, cumulatively adding the accumulated electric power amount and displaying the accumulated electric power amount by the display unit.

Electronic watt-hour meter, like mechanical watt-hour meter, is used in domestic and industrial fields to measure the amount of power used, but it has the advantage of measuring various information related to electric power. And its use is expanding.

1 is a view schematically showing a configuration of a conventional remote meter-reading system.

Referring to FIG. 1, the remote meter reading system 1 includes a watt hour meter 10 and a meter reading server 20 connected to each other through a wired / wireless communication network.

The watt hour meter 10 is connected to a load (not shown) to measure the amount of power consumed in the load, that is, the amount of power used. The watt hour meter 10 is composed of a control unit 11 and a display unit 15.

The control unit 11 measures the amount of power used by the load and converts it into digital data. The control unit (11) outputs the converted data to the display unit (15).

The display unit 15 displays data provided by the control unit 11. The display unit 15 can display data up to one decimal place or more. For example, the display unit 15 displays data provided by the control unit 11 within the range of 0000.00 to 9999.99. At this time, when the data displayed on the display unit 15 exceeds the display maximum value, that is, 9999.99, the display of data starts again from the display minimum value, i.e., 0000.00.

The watt hour meter 10 described above transmits data displayed on the display unit 15 to the meter reading server 20 in response to a data request of the meter reading server 20. The meter reading server 20 stores the data transmitted from the watt hour meter 10 as the accumulated power amount of the watt hour meter 10.

At this time, in the conventional remote meter-reading system 1, between the actual usage amount of the load connected to the watt hour meter 10 and the accumulated amount of electric power stored in the meter server 20 according to the time of data transmission from the watt hour meter 10 to the meter reading server 20 An error occurs.

In other words, when the data requesting time of the meter reading server 20 is the time when the data displayed on the display unit 15 of the watt hour meter 10 does not exceed the display maximum value at all, The accumulated power amount stored in the storage unit 20 has the same value.

However, if the data requesting time of the meter reading server 20 is the time when the data displayed on the display unit 15 of the watt hour meter 10 exceeds the display maximum value at least once, the amount of power used in the watt hour meter 10 20 do not have the same value.

For example, if the display unit 15 of the watt-hour meter 10 displays data 0000.01 exceeding the display maximum value once, the actual used power amount of the load connected to the watt-hour meter 10 is 10000.01. However, the cumulative power amount transferred from the watt hour meter 10 to the meter reading server 20 and stored therein becomes 0000.01, which causes a large difference between the actual used power amount and the accumulated power amount stored in the meter reading server 20.

That is, in the conventional remote meter-reading system 1, according to the time when the meter reading server 20 requests data from the watt hour meter 10, the actual usage power amount of the load and the accumulated electric power amount of the watt hour meter 10 stored in the meter reading server 20 And the reliability of the remote meter reading system 1 is deteriorated due to such a difference.

An object of the present invention is to provide a power meter remote meter reading system capable of reading an accumulated amount of electric power with an accurate value from a watt hour meter.

According to an aspect of the present invention, there is provided a system for measuring the amount of electricity used in a telemetry system, the system comprising a watt-hour meter for generating display data and overlap data according to a reference level from a measured amount of used power, And a meter reading server for calculating an accumulated electric energy amount of the watt hour meter.

And the overlap data is increased in size each time the used power amount exceeds the reference level.

And the display data is generated by subtracting the reference level from the used power amount.

Wherein the watt-hour meter includes: a measuring unit that measures the amount of power used; an arithmetic unit that generates the display data and the counter control signal from the used power amount in accordance with the reference level; A display unit for displaying the display data, and a communication unit for transmitting the display data and the overlap data to the meter reading server in response to a request from the meter reading server.

And the reference level is equal to a maximum display level of the display unit.

And the communication unit transmits the unique ID information of the watt hour meter together with the display data and the overlap data to the meter reading server.

And the communication unit transmits information on the meter reading time of the watt hour meter together with the display data and the overlap data to the meter reading server.

The meter reading system of the present invention can accurately determine the number of times of exceeding the maximum display level from the meter amount data transmitted from the watt hour meter so that the meter reading meter can accurately measure the accumulated amount of electric power from the watt hour meter, .

1 is a view schematically showing a configuration of a conventional remote meter-reading system.
FIG. 2 is a diagram illustrating a configuration of an automatic meter reading system according to an embodiment of the present invention.
3 is an operation flowchart showing a method of measuring the integrated amount of power using the remote meter-reading system of FIG.
FIG. 4 is a diagram illustrating a configuration of an automatic meter reading system according to another embodiment of the present invention.
5 is a diagram showing a configuration of data transmitted from a watt hour meter in the remote meter-reading system of FIG.

Hereinafter, a power meter remote meter-reading system according to the present invention will be described in detail with reference to the accompanying drawings.

FIG. 2 is a diagram illustrating a configuration of an automatic meter reading system according to an embodiment of the present invention.

Referring to FIG. 2, the remote meter reading system 100 according to the present embodiment includes a watt-hour meter 200 and a meter reading server 300, and they can be connected to each other through a wired or wireless communication network.

The watt hour meter 200 is connected to a load (not shown), and the amount of power used by the load can be measured and displayed. The watt hour meter 200 may include a measurement unit 210, an operation unit 220, a counter 240, a display unit 230, and a communication unit 250.

The measuring unit 210 may measure the amount of power consumed in the load connected to the watt hour meter 200 and output the used amount of power AMT1.

The measurement unit 210 may include a voltage and current measurement unit (not shown). The measuring unit 210 can measure the analog voltage and the analog current supplied to the load and output the used power amount AMT1 in the form of analog data.

The calculating unit 220 converts the used power amount AMT1 output from the measuring unit 210 into digital data through analog to digital conversion and generates display data AMT2 and counter control signal CS from the converted digital data And output it.

The operation unit 220 can generate the display data AMT2 and the counter control signal CS according to the set reference level Ref. In other words, the calculating unit 220 can compare the magnitude of the used power amount AMT1 with the reference level Ref, and generate the display data AMT2 and the counter control signal CS according to the comparison result. The display data AMT2 may be output to the display unit 230 and the counter control signal CS may be output to the counter 240. [ Here, the reference level Ref may be the same value as the maximum display level of the display unit 230, which will be described later.

The counter 240 can generate the overlap data OVD according to the counter control signal CS output from the calculator 220. [ The counter 240 may include an internal memory (not shown), and a counter value corresponding to the initial overlap data OVD may be stored in the internal memory. When the operation unit 220 outputs the counter control signal CS, the counter 240 can sequentially increase the counter value stored in the internal memory. Next, it is possible to generate the overlap data OVD according to the increased counter value, and to update and store the generated overlap data OVD in the internal memory.

That is, the counter 240 can update the overlap data (OVD) stored in the internal memory while incrementing the counter value of the overlap data stored in accordance with the counter control signal CS by one. Here, the overlap data OVD stored in the counter 240 may be a natural number including zero.

The display unit 230 may display the display data AMT2 output from the calculator 220 externally. The display unit 230 may be implemented as a liquid crystal display (LCD), an organic light emitting diode (OLED) display, or a segment.

The display unit 230 can repeatedly display the display data AMT2 within the range from the minimum display level to the maximum display level. In other words, the display unit 230 can have a display range from the minimum display level 0000.00 to the maximum display level 9999.99, and such a display range can be repeatedly displayed. For example, the display unit 230 can display the display data AMT2 after the maximum display level is displayed according to the display data AMT2, and then reset to the minimum display level.

The communication unit 250 can perform data communication by connecting the watt hour meter 200 and the meter reading server 300 through a wired / wireless communication network. The communication unit 250 may transmit the display data AMT2 and the overlap data OVD generated by the operation unit 220 to the meter reading server 300 in response to a data request from the meter reading server 300. [

The communication unit 250 may be any one of a power line communication MODEM, an RS-485 serial communication modem, a radio frequency modem (RF MODEM), and a Zigbee modem.

The meter reading server 300 can be connected to the communication unit 250 of the watt hour meter 200 via a wired / wireless communication network. The meter reading server 300 integrates the watt hour meter 200 according to the data of the watt hour meter 200 transmitted through the communication unit 250 of the watt hour meter 200, that is, the display data AMT2, the overlap data OVD, The amount of power can be calculated.

3 is an operation flowchart showing a method of measuring the integrated amount of power using the remote meter-reading system of FIG.

Referring to FIGS. 2 and 3, the measuring unit 210 of the watt hour meter 200 measures the amount of power consumed in the load and outputs the used amount of power AMT1 (S10).

Next, the operation unit 220 of the watt hour meter 200 converts the used power amount AMT1 into digital data and compares the converted data with the reference level Ref (S20). Then, the operation unit 220 can generate the display data AMT2 and the counter control signal CS according to the comparison result (S30).

Here, the reference level Ref may be the same as the maximum display level of the display unit 230. The operation unit 220 also generates the counter control signal CS and the display data AMT2 when the used power amount AMT1 is greater than or equal to the reference level Ref and when the used power amount AMT1 is lower than the reference level Ref Ref), it is possible to generate only the display data AMT2.

For example, when the reference level Ref is 9999.99 and the used power amount AMT1 is 10000.00 which is larger than the reference level Ref, the calculating unit 220 calculates 0000.01 obtained by subtracting the reference level Ref from the used power amount AMT1 And can be generated by the display data AMT2. At this time, since the used power amount AMT1 exceeds the reference level Ref, the calculating unit 220 can generate the counter control signal CS together with the display data AMT2.

However, when the used power amount AMT1 is 5555.55 which is smaller than the reference level Ref, the calculating unit 220 can generate the used power amount AMT1 5555.55 with the display data AMT2. At this time, since the used power amount AMT1 is less than the reference level Ref, the calculating unit 220 can generate only the display data AMT2.

The display data AMT2 output from the operation unit 220 is provided to the display unit 230 and the display unit 230 can display the display data AMT2 within the range between the minimum display level and the maximum display level.

The counter control signal CS output from the operation unit 220 may be provided to the counter 240. The counter 240 may increase the counter value of the overlapping data OVD by 1 according to the counter control signal CS and generate and store new overlap data OVD accordingly.

On the other hand, if the counter 220 does not output the counter control signal CS, the counter 240 can maintain the previously stored overlap data OVD.

As described above, the watt-hour meter 200 can generate the display data AMT2 and the overlap data OVD from the used power amount AMT1 according to the reference level Ref. The display data AMT2 may be displayed to the user through the display unit 230 and the overlap data OVD may be stored in the internal memory of the counter 240. [

Subsequently, the meter reading server 300 can request data from the watt hour meter 200 through the wired / wireless communication network. The communication unit 250 of the watt hour meter 200 can transmit the display data AMT2 and the overlap data OVD to the meter reading server 300 (S50).

The meter reading server 300 can calculate the accumulated power amount of the watt hour meter 200 according to the display data AMT2 and the overlap data OVD transmitted from the watt hour meter 200 in operation S60.

For example, when the display data AMT2 transmitted from the watt hour meter 200 is 0000.01 and the overlap data OVD is 1, the meter reading server 300 calculates the accumulated power amount 10000.01 (kwh) of the watt hour meter 200, You can save it.

FIG. 4 is a diagram illustrating a configuration of an automatic meter reading system according to another embodiment of the present invention.

The remote meter-reading system 101 shown in FIG. 4 is similar to the remote meter-reading system 100 (FIG. 4) described above with reference to FIG. 2 except that a plurality of watt-hour meters 201_1 to 201_N are connected to the meter reading server 300 via a wired / ).

Referring to FIG. 4, a plurality of watt-hour meters, for example, the first watt-hour meter 201_1 to the Nth watt-hour meter 201_N, may be commonly connected to the meter reading server 300 through a wired / wireless communication network.

Each of the plurality of watt-hour meters 201_1 to 201_N has the same configuration as that of the watt-hour meter 200 shown in FIG. In other words, each of the plurality of watt-hour meters 201_1 to 201_N may include a measuring unit 210, a calculating unit 220, a counter 240, a display unit 230, and a communication unit 250.

The measuring unit 210 can measure the amount of power consumed in the load and output the used amount of power AMT1.

The calculating unit 220 may compare the used power amount AMT1 output from the measuring unit 210 with the reference level Ref and generate the display data AMT2 and the counter control signal CS according to the comparison result.

The counter 240 can generate the overlap data OVD according to the counter control signal CS output from the calculator 220. [

The display unit 230 can display the display data AMT2 output from the operation unit 220. [

The communication unit 250 may transmit the display data AMT2 and the overlap data OVD to the meter reading server 300 through the wired / wireless communication network at the request of the meter reading server 300. [

4, since the plurality of watt-hour meters 201_1 to 201_N are connected to one meter reading server 300, data transmitted from each watt-hour meter 201_1 to 201_N, that is, display data AMT2 ) And the overlap data OVD are required.

The watt-hour meters 201_1 to 201_N of the present embodiment can transmit the unique ID information of the watt-hour meters 201_1 to 201_N together when the display data AMT2 and the overlap data OVD are transmitted through the communication unit 250. [

5 is a diagram showing a configuration of data transmitted from a watt hour meter in the remote meter-reading system of FIG.

4 and 5, the first watt-hour meter 201_1 of the plurality of watt-hour meters 201_1 to 201_N receives the first watt-hour meter data A in the order of unique ID information, date information, overlap data, and display data, (300). Here, the date information may be the time information on the remote meter reading of the first watt-hour meter 201_1.

The N watt hour meter 201_N among the plurality of watt meters 201_1 to 201_N may transmit the N watt hour meter data B configured in the order of unique ID information, date information, overlap data, and display data to the meter reading server 300 . Here, the date information may be information on the time when the remote meter reading for the Nth watt hour meter 201_N is performed.

In this manner, each of the plurality of watt-hour meters 201_1 to 201_N transmits data including different unique ID information to the meter reading server 300, so that the meter reading server 300 can acquire data transmitted from the plurality of watt-hour meters 201_1 to 201_N The integrated amount of power for each of the plurality of watt-hour meters 201_1 to 201_N can be calculated and stored.

While a number of embodiments have been described in detail above, it should be construed as being illustrative of preferred embodiments rather than limiting the scope of the invention. Therefore, the invention should not be construed as limited to the embodiments described, but should be determined by equivalents to the appended claims and the claims.

100: remote meter reading system 200: watt hour meter
210: measuring unit 220:
230: Display 240: Counter
250: communication unit 300: meter reading server

Claims (7)

A watt hour meter for generating display data and overlap data in accordance with the reference level from the measured amount of used power; And
And a meter reading server that receives the display data and the overlap data from the watt hour meter and calculates an integrated power amount of the watt hour meter. The method according to claim 1,
Wherein the overlap data is increased in size each time the used power amount exceeds the reference level. The method according to claim 1,
Wherein the display data is generated by subtracting the reference level from the used power amount. The method according to claim 1,
The watt-
A measuring unit for measuring the amount of power used;
An operation unit for generating the display data and the counter control signal from the used electric power amount according to the reference level;
A counter for incrementing the initial count value by one according to the counter control signal to generate the overlap data;
A display unit for displaying the display data; And
And a communication unit for transmitting the display data and the overlap data to the meter reading server at the request of the meter reading server. 5. The method of claim 4,
Wherein the reference level is equal to a maximum display level of the display unit. 5. The method of claim 4,
Wherein the communication unit transmits the unique ID information of the watt hour meter together with the display data and the overlap data to the meter reading server. 5. The method of claim 4,
Wherein the communication unit transmits information on the meter reading time of the watt hour meter together with the display data and the overlap data to the meter reading server.
KR1020150099287A 2015-07-13 2015-07-13 Remote electric energy metering system KR20170008049A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106851735A (en) * 2017-03-03 2017-06-13 国动物联网技术（上海）有限公司 A kind of method that LoRaWAN treatment multiple gateways Data duplication sends

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106851735A (en) * 2017-03-03 2017-06-13 国动物联网技术（上海）有限公司 A kind of method that LoRaWAN treatment multiple gateways Data duplication sends
CN106851735B (en) * 2017-03-03 2020-08-04 国动物联网技术（上海）有限公司 Method for processing repeated transmission of multi-gateway data through L oRaWAN

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