KR20140111459A - Power measuring system - Google Patents

Power measuring system Download PDF

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Publication number
KR20140111459A
KR20140111459A KR1020130025614A KR20130025614A KR20140111459A KR 20140111459 A KR20140111459 A KR 20140111459A KR 1020130025614 A KR1020130025614 A KR 1020130025614A KR 20130025614 A KR20130025614 A KR 20130025614A KR 20140111459 A KR20140111459 A KR 20140111459A
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South Korea
Prior art keywords
wireless communication
power
communication means
power measurement
unit
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KR1020130025614A
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Korean (ko)
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KR102041631B1 (en
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강신재
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삼성전기주식회사
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    • 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
    • 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

Abstract

The present invention relates to a power measuring system, comprising a power measuring block to detect a voltage and a current supplied to a power supply device of a home electronic system, measure power and provide the outside with information associated with a standby power quantity or power consumption; and a system control block to receive the information from the power measuring block to be processed and transmit a corresponding control command signal, wherein wireless communication means are respectively installed in the power measuring block and the system control block, and the signal (data) between the power measuring block and the system control block is wirelessly transmitted and received using the wireless communication means. According to the present invention, electric damage and impact can be isolated using a magnetic field when data is transmitted due to a difference between primary and secondary reference voltage levels, and a hall-magnetic coil transceiver can be integrated on a silicon substrate together with the power measuring block, thereby simplifying a system.

Description

[0001] POWER MEASURING SYSTEM [0002]

The present invention relates to a power measurement system and, more particularly, to a power measurement system capable of overcoming a reference voltage difference between a power measurement block and a system control block by transmitting and receiving signals between a power measurement block and a system control block by a wireless communication method, Lt; / RTI >

In order to manage energy more efficiently, the implementation of smart grid system is becoming active. Here, DR (Demand Response), which is an important function of the Smart Grid system, is widely used to efficiently manage the preliminary power generation capacity of a power plant through power demand forecasting in terms of power supply such as a power plant, thereby reducing wasted power. In addition, we want to manage air and power consumption of TV, refrigerator, air conditioner, washing machine and computer which is the main equipment of electric power demand. As a result, the development of DR-Ready household appliances that support DR of smart grid is becoming more active.

The power measurement system employed in a TV, an air conditioner, a washing machine, and the like for DR-Ready support of a smart grid includes a power measurement block 110, a system control block 120 and an isolator (not shown) 130). Here, the power measurement block 110 provides the system control block 120 with information on standby power consumption and power consumption, and the information includes active power and apparent power, voltage RMS (Root Mean Square), current RMS, PF Factor). The system control block 120 transmits a control command signal corresponding to the power measurement block 110 based on the received information.

The isolator 130 is intended to overcome the difference between the reference voltage levels of the power measurement block 110 and the system control block 120. That is, the difference between the reference voltage level of the power measurement block 110 and the reference voltage level of the system control block 120 may occur at a maximum of 200 V or more. Therefore, if the isolator 130 is not used, a large potential difference between the two blocks can damage the IC or other parts. However, the isolator 130 outputs the signal input to the input terminal (primary side) of the isolator to the output terminal (secondary side) even if the reference potential difference is large.

However, the isolator 130 may include a chip selector (CS) and a serial data input (SDI), a serial data output (SDO), a system clock (SCLK) of the serial peripheral interface (SPI) 114 of the power measurement block 110, And the like, it causes a large quantity, an area requirement, and an additional power consumption, which may cause a rise in standby power of the system. In FIG. 1, reference numeral 101 denotes a voltage signal sensor, 102 denotes a current signal sensor, 103 denotes a power supply block (device), 111, 112 denotes a sigma-delta ADC, 113 denotes an energy measurement block, 115 denotes an AC- 121 denotes an SDI (Serial Data Interface), and 122 denotes an MCU.

Korean Patent Publication No. 10-2010-0070628 Korean Patent Publication No. 10-2008-0026684

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems and it is an object of the present invention to solve the problem of space reservation, additional power consumption and standby power increase in a signal transmission system using an existing isolator, A power measurement system capable of overcoming a reference voltage difference between a power measurement block and a system control block and transmitting and receiving data smoothly by transmitting and receiving a signal by a wireless communication method by providing hole-magnetic coil transceivers in control blocks, respectively It has its purpose.

According to an aspect of the present invention,

A power measurement block for sensing the voltage and current applied to the power supply device of the household appliance system to measure the power and providing information related to the standby power amount or the consumed power to the outside; And

And a system control block for receiving and processing information from the power measurement block and sending out a corresponding control command signal,

The power measurement block and the system control block are provided with wireless communication means, respectively, and signal transmission / reception is performed wirelessly between the power measurement block and the system control block using the wireless communication means.

The power measurement block may further include:

A sigma-delta ADC for converting detection signals (analog signals) of voltage and current sensed by the voltage signal sensor and the current signal sensor, respectively, into digital data;

An energy measurement unit for obtaining a power measurement related parameter by using digital data of voltage and current converted by the sigma-delta ADC;

An interface unit for transmitting a power metering-related parameter obtained by the energy measuring unit to the system control block through the wireless communication unit;

A clock generator for generating a clock necessary for obtaining the power metering-related parameter by the energy measuring unit and providing the generated clock to the energy measuring unit;

And a control unit that receives the power metering-related parameter obtained by the energy measuring unit via the interface unit and transmits the received power metering-related parameter to the wireless communication unit (second wireless communication unit) on the system control block side, Wireless communication means (first wireless communication means) for receiving via wireless communication means (second wireless communication means) and transferring the same to an upper layer; And

And an AC-DC converter for converting an AC voltage supplied from the outside into a DC voltage for driving components inside the system.

Here, as the radio communication means (first and second radio communication means), a hole-magnetic coil transceiver may be used.

In addition, the power metering-related parameter may include at least one of active power, reactive power, apparent power, voltage root mean square (RMS), current RMS, and power factor (PF).

Also, an SPI (Serial Peripheral Interface), a universal asynchronous receiver / transmitter (UART), an I2C (I-square-C) or the like may be used as the interface unit on the power measurement block side.

The system control block may further include:

A control unit for receiving and processing information from the power measurement block side and sending out a control command signal;

An interface for receiving information from the power measurement block side and transferring the information to the control unit and transmitting a control command signal from the control unit to the power measurement block side; And

A control command signal from the control unit is received via the interface unit and is transmitted to wireless communication means (first wireless communication means) on the power measurement block side, and a power measurement related parameter from the power measurement block side is transmitted to the wireless communication means (Second wireless communication means) for receiving the received signal through the first wireless communication means (first wireless communication means) and delivering it to the upper layer.

Here, an SDI (Serial Data Interface) may be used as the interface unit on the system control block side.

According to the present invention, it is possible to isolate the electric damage and impact at the time of data transmission due to the difference of the first and second side reference voltage levels by using a magnetic field, and the Hall-Magnetic Coil transceiver is mounted on the silicon substrate It can be integrated, and the system can be simplified.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 schematically shows the configuration of a conventional power measurement system; FIG.
2 is a schematic diagram illustrating a configuration of a power measurement system according to an embodiment of the present invention.
3 is a conceptual diagram illustrating the signal transmission / reception principle of the Hall-Magnetic Coil transceiver employed in the present invention.
4 is a diagram showing input / output waveforms of a Hall-Magnetic Coil transceiver employed in the present invention.

The terms and words used in the present specification and claims should not be construed as limited to ordinary or dictionary terms and the inventor can properly define the concept of the term to describe its invention in the best way Should be construed in accordance with the principles and meanings and concepts consistent with the technical idea of the present invention.

Throughout the specification, when an element is referred to as "comprising ", it means that it can include other elements as well, without excluding other elements unless specifically stated otherwise. Also, the terms " part, "" module, "and" device " Lt; / RTI >

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

FIG. 2 is a schematic view illustrating a configuration of a power measurement system according to an embodiment of the present invention. Referring to FIG.

The power measurement system according to the present invention includes a power measurement block 210 and a system control block 220.

The power measurement block 210 measures the power by sensing the voltage and current applied to the power supply 203 of the household electrical system (for example, a smart home system such as a TV and an electric air conditioner incorporating a power measurement function) , The standby power amount, or the consumed power.

The system control block 220 receives and processes information from the power measurement block 210 and sends out corresponding control command signals.

In particular, the power measurement block 210 and the system control block 220 are provided with wireless communication means 217 and 223, respectively. The wireless communication means 217 and 223 are used to control the power measurement block 210 and the system control (Data) transmission / reception between the blocks 220 is performed wirelessly.

The power measurement block 210 includes sigma-delta ADCs 211 and 212, an energy measurement unit 213, an interface unit 214, a clock generator 216, wireless communication means (first wireless communication means) 217, AC -DC converter 215. [0033] FIG.

The sigma-delta ADCs 211 and 212 convert detection signals (analog signals) of the voltage and current sensed by the voltage signal sensor 201 and the current signal sensor 202, respectively, into digital data.

The energy measuring unit 213 obtains a power metering-related parameter by using the digital data of the voltage and current converted by the sigma-delta ADCs 211 and 212. Also, the energy measuring unit 213 receives and processes the control command signal (data) transmitted from the system control block 220 side. Here, the power metering-related parameter may include at least one of active power, reactive power, apparent power, voltage root mean square (RMS), current RMS, and power factor (PF).

The interface unit 214 transmits a power metering-related parameter obtained by the energy measuring unit 213 to the system control block 220 side via the wireless communication means (first wireless communication means) 217. [ The interface unit 214 may be a serial peripheral interface (SPI), a universal asynchronous receiver / transmitter (UART), or an I2C (I2C). In this embodiment, an example in which SPI (Serial Peripheral Interface) is used as the interface unit 214 is shown.

The clock generator 216 generates a clock necessary for the power measurement related parameter calculation by the energy measurement unit 213 and provides the generated clock to the energy measurement unit 213.

The wireless communication unit 217 receives the power measurement related parameter obtained by the energy measurement unit 213 through the interface unit 214 and transmits the power measurement related parameter to the wireless communication unit 220 (Second wireless communication means) 223, receives a control command signal from the system control block 220 side through the wireless communication means (second wireless communication means) 223, (I.e., the interface unit 214). Here, a hole-magnetic coil transceiver may be used as the wireless communication means (first wireless communication means) 217.

The AC-DC converter 215 converts an AC voltage (e.g., 220V AC) supplied from the outside into a DC voltage (e.g., 5V or 12V DC) for driving components within the system ).

The system control block 220 may include a control unit 222, an interface unit 221, and a wireless communication unit (second wireless communication unit)

The control unit 222 receives and processes information from the power measurement block 210, and transmits a corresponding control command signal. An MCU (microcontroller unit) may be used as the control unit 222. FIG.

The interface unit 221 receives information from the power measurement block 210 and transmits the received information to the control unit 222 and transmits a control command signal from the control unit 222 to the power measurement block 210 . Here, an SDI (Serial Data Interface) may be used as the interface unit 221.

The wireless communication unit 223 receives the control command signal from the controller 222 through the interface unit 221 and receives the control command signal from the wireless communication unit 1 wireless communication means) 217 and receives a power metering-related parameter from the power measurement block 210 side through the wireless communication means (first wireless communication means) 217, To the interface unit 221). Here, a hole-magnetic coil transceiver may be used as the wireless communication means (second wireless communication means) 223, like the first wireless communication means 217.

Hereinafter, the hole-magnetic coil transceiver will be described in further detail.

The difference between the reference voltage level of the power measurement block 210 and the reference voltage level of the system control block 220 is greater than the difference between the power measurement block 210 and the system control block 220, There is a risk that electric shock such as short-circuit and short-circuit may be applied to communication terminals and internal blocks of both sides when communication is performed through a physical connection (that is, a physical connection). To prevent this, a connection method such as light or magnetic field should be used instead of electrical connection (ie, physical connection). Therefore, in the present invention, a connection method using a Hall-magnet coil transceiver, which is a magnetic field connection method, is employed.

FIG. 3 is a conceptual diagram illustrating the signal transmission / reception principle of the Hall-Magnetic Coil transceiver employed in the present invention.

3, the Hall-Magnetic Coil transceiver includes a primary-side reference voltage level unit 310 and a secondary-side reference voltage level unit 320. The primary-side reference voltage level unit 310 includes a primary- The data information is transmitted through the magnetic field to the secondary side reference voltage level portion 320 without electrical shock. That is, the data information inputted or generated at the primary side reference voltage level unit 310 is inputted to the magnetic coil driver 312 through the output control block 311. [ At this time, the output control block 311 can perform phase or amplitude modulation or the like so that data can be smoothly transmitted using a sufficient magnetic field. The magnetic coil driver 312 applies a current to the magnetic coil, and as a result, the magnetic coil generates a magnetic field.

The hall sensor 321 of the secondary side reference voltage level portion 320 senses the intensity of the magnetic field radiated from the magnetic coil and converts it into an electrical signal. The converted electrical signal is amplified by the sensor amplifier 322 to a size for signal processing. The output driver 323 outputs the amplified signal to the sensor amplifier 322 in the form of digital data of 0 or 1. Accordingly, the digital data of the primary side reference voltage level portion 310 is finally transmitted to the secondary side reference voltage level portion 320 without electric shock or damage.

The Hall-Magnetic Coil transceiver as described in the above description can perform the timing road communication as shown in FIG. 4 for the transmission and reception of data. At this time, a magnetic field signal as a medium for transmitting and receiving data for transmission and reception of data can be transmitted in the form of modulated phase or amplitude so that data can be smoothly transmitted and received without being affected by noise. In addition, the above hole-magnetic coil transceiver can be integrated on the silicon substrate together with the power measurement block 210, thereby simplifying the entire system.

In the above description, the primary-side reference voltage level portion 310 of the Hall-magnet coil transceiver corresponds to a transmitting terminal of a magnetic field signal, and the secondary-side reference voltage level portion 320 corresponds to a receiving terminal of a magnetic- . Therefore, when the above-described hall-magnetic coil transceiver is applied to the first wireless communication means 217 and the second wireless communication means 223 of the power measurement system of the present invention, the first wireless communication means 217 and the A first side reference voltage level part 310 corresponding to a transmitting end of the Hall-magnet coil transceiver and a secondary side reference voltage level part 310 corresponding to a receiving end are connected to the first wireless communication part 217 side for bidirectional communication between the first wireless communication part 223 and the second wireless communication part 223, And a primary side voltage level portion 310 and a secondary side voltage level portion 320 are provided on the side of the second wireless communication means 223, respectively.

As described above, the power measurement system according to the present invention can be applied to a wireless communication system using a hall-magnetic coil transceiver instead of a signal transmission / reception system (physical connection system) between a power measurement block using a conventional isolator and a system control block The data can be transmitted without electrical damage or impact due to the difference in the primary and secondary voltage levels.

In addition, the Hall-Magnetic Coil transceiver can be integrated on the silicon substrate together with the power measurement block, which has the advantage of simplifying the system.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but many variations and modifications may be made without departing from the spirit and scope of the invention. Be clear to the technician. Accordingly, the true scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of the same should be construed as being included in the scope of the present invention.

101, 201 ... voltage signal sensors 102, 202 ... current signal sensors
103,203 ... power supply 210 ... power measurement block
111, 112, 211, 212 ... sigma-delta ADC 113, 213 ... energy measuring unit
114 ... 214 ... Interface (SPI) 115,215 ... AC-DC converter
116, 216 ... clock generating unit 217 ... wireless communication means (first wireless communication means)
120, 220 ... system control block 121, 221 ... interface (SDI)
122, 222 ... control unit (MCU) 223 ... wireless communication means (second wireless communication means)

Claims (9)

A power measurement block for sensing the voltage and current applied to the power supply device of the household appliance system to measure the power and providing information related to the standby power amount or the consumed power to the outside; And
And a system control block for receiving and processing information from the power measurement block and sending out a corresponding control command signal,
Wherein the power measurement block and the system control block are provided with wireless communication means, respectively, and the signal transmission and reception between the power measurement block and the system control block are performed wirelessly using the wireless communication means. .
2. The apparatus of claim 1, wherein the power measurement block comprises:
A sigma-delta ADC for converting detection signals (analog signals) of voltage and current sensed by the voltage signal sensor and the current signal sensor, respectively, into digital data;
An energy measurement unit for obtaining a power measurement related parameter by using digital data of voltage and current converted by the sigma-delta ADC;
An interface unit for transmitting a power metering-related parameter obtained by the energy measuring unit to the system control block through the wireless communication unit;
A clock generator for generating a clock necessary for obtaining the power metering-related parameter by the energy measuring unit and providing the generated clock to the energy measuring unit;
And a control unit that receives the power metering-related parameter obtained by the energy measuring unit via the interface unit and transmits the received power metering-related parameter to the wireless communication unit (second wireless communication unit) on the system control block side, Wireless communication means (first wireless communication means) for receiving via wireless communication means (second wireless communication means) and transferring the same to an upper layer; And
And an AC-DC converter for converting an AC voltage supplied from the outside into a DC voltage for driving components inside the system.
3. The method of claim 2,
Wherein the wireless communication means (first wireless communication means) is an Hall-Magnetic Coil transceiver.
The method of claim 3,
Wherein the Hall-Magnetic Coil transceiver is configured with a structure integrated on a substrate together with the power measurement block.
3. The method of claim 2,
Wherein the power metering-related parameter comprises at least one of active power, reactive power, apparent power, voltage root mean square (RMS), current RMS, and power factor (PF).
3. The method of claim 2,
Wherein the interface unit on the power measurement block side is any one of an SPI (Serial Peripheral Interface), a UART (universal asynchronous receiver / transmitter), and an I2C (I-square-C)
The system control block according to claim 1,
A control unit for receiving and processing information from the power measurement block side and sending out a control command signal;
An interface for receiving information from the power measurement block side and transferring the information to the control unit and transmitting a control command signal from the control unit to the power measurement block side; And
A control command signal from the control unit is received via the interface unit and is transmitted to wireless communication means (first wireless communication means) on the power measurement block side, and a power measurement related parameter from the power measurement block side is transmitted to the wireless communication means (Second wireless communication means) for receiving the received signal through the first wireless communication means (first wireless communication means) and delivering it to an upper layer.
8. The method of claim 7,
And the interface unit on the system control block side is an SDI (Serial Data Interface).
8. The method of claim 7,
Wherein the wireless communication means (second wireless communication means) is a Hall-Magnetic Coil transceiver.
KR1020130025614A 2013-03-11 2013-03-11 Power measuring system KR102041631B1 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104597345A (en) * 2015-01-09 2015-05-06 深圳声物互动科技有限公司 Online edition kinetic energy electricity generation measuring system and measuring method thereof
WO2019101219A1 (en) * 2017-11-21 2019-05-31 珠海格力电器股份有限公司 Distributed system inside electric cabinet, and design method therefor

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Publication number Priority date Publication date Assignee Title
KR20080026684A (en) 2006-09-21 2008-03-26 박세현 Power line monitoring module and method for location awareness based home-network service using it
KR20100070628A (en) 2008-12-18 2010-06-28 한국전자통신연구원 Apparatus and method for controlling energe usage having remote control of electronic appliance
US20100182153A1 (en) * 2008-11-25 2010-07-22 Kurt Holdgaard Jensen Apparatus with an infrared sensor and magnetic near field communication properties for monitoring activity in a selected area
JP2011242225A (en) * 2010-05-17 2011-12-01 Mitsubishi Electric Corp Electric power measuring device and electric power measuring system
KR101092662B1 (en) * 2010-12-29 2011-12-13 전자부품연구원 Reader for magnetic field communication
KR101218463B1 (en) * 2011-05-26 2013-01-04 엘에스산전 주식회사 Apparatus for detecting information using power

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20080026684A (en) 2006-09-21 2008-03-26 박세현 Power line monitoring module and method for location awareness based home-network service using it
US20100182153A1 (en) * 2008-11-25 2010-07-22 Kurt Holdgaard Jensen Apparatus with an infrared sensor and magnetic near field communication properties for monitoring activity in a selected area
KR20100070628A (en) 2008-12-18 2010-06-28 한국전자통신연구원 Apparatus and method for controlling energe usage having remote control of electronic appliance
JP2011242225A (en) * 2010-05-17 2011-12-01 Mitsubishi Electric Corp Electric power measuring device and electric power measuring system
KR101092662B1 (en) * 2010-12-29 2011-12-13 전자부품연구원 Reader for magnetic field communication
KR101218463B1 (en) * 2011-05-26 2013-01-04 엘에스산전 주식회사 Apparatus for detecting information using power

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104597345A (en) * 2015-01-09 2015-05-06 深圳声物互动科技有限公司 Online edition kinetic energy electricity generation measuring system and measuring method thereof
WO2019101219A1 (en) * 2017-11-21 2019-05-31 珠海格力电器股份有限公司 Distributed system inside electric cabinet, and design method therefor

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