KR20170131911A - Current Metering Apparatus and Method using an Energy Harvesting based on Current Sensor - Google Patents

Current Metering Apparatus and Method using an Energy Harvesting based on Current Sensor Download PDF

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KR20170131911A
KR20170131911A KR1020160062714A KR20160062714A KR20170131911A KR 20170131911 A KR20170131911 A KR 20170131911A KR 1020160062714 A KR1020160062714 A KR 1020160062714A KR 20160062714 A KR20160062714 A KR 20160062714A KR 20170131911 A KR20170131911 A KR 20170131911A
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South Korea
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current
sensor
battery
current sensor
transmitter
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KR1020160062714A
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Korean (ko)
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강정훈
임호정
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전자부품연구원
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Publication of KR20170131911A publication Critical patent/KR20170131911A/en

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
    • G01R19/0092—Arrangements for measuring currents or voltages or for indicating presence or sign thereof measuring current only
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
    • G01R19/165—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
    • G01R19/16533—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values characterised by the application
    • G01R19/16538—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values characterised by the application in AC or DC supplies
    • G01R19/16542—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values characterised by the application in AC or DC supplies for batteries
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R15/00—Details of measuring arrangements of the types provided for in groups G01R17/00 - G01R29/00, G01R33/00 - G01R33/26 or G01R35/00
    • G01R15/14—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks
    • G01R15/18—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using inductive devices, e.g. transformers
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
    • G01R19/165—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
    • G01R19/16566—Circuits and arrangements for comparing voltage or current with one or several thresholds and for indicating the result not covered by subgroups G01R19/16504, G01R19/16528, G01R19/16533
    • G01R19/16576—Circuits and arrangements for comparing voltage or current with one or several thresholds and for indicating the result not covered by subgroups G01R19/16504, G01R19/16528, G01R19/16533 comparing DC or AC voltage with one threshold
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
    • G01R19/165—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
    • G01R19/16566—Circuits and arrangements for comparing voltage or current with one or several thresholds and for indicating the result not covered by subgroups G01R19/16504, G01R19/16528, G01R19/16533
    • G01R19/1659—Circuits and arrangements for comparing voltage or current with one or several thresholds and for indicating the result not covered by subgroups G01R19/16504, G01R19/16528, G01R19/16533 to indicate that the value is within or outside a predetermined range of values (window)
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
    • G01R19/25—Arrangements for measuring currents or voltages or for indicating presence or sign thereof using digital measurement techniques
    • G01R19/2506—Arrangements for conditioning or analysing measured signals, e.g. for indicating peak values ; Details concerning sampling, digitizing or waveform capturing
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
    • G01R19/25—Arrangements for measuring currents or voltages or for indicating presence or sign thereof using digital measurement techniques
    • G01R19/2513—Arrangements for monitoring electric power systems, e.g. power lines or loads; Logging
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/44—Methods for charging or discharging
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Secondary Cells (AREA)
  • Measurement Of Current Or Voltage (AREA)

Abstract

The present invention provides a device and a method for measuring current through an energy harvesting using a current sensor. According to an embodiment of the present invention, the device for measuring current comprises: the current sensor measuring the current; and a battery charged with the current flowing in the current sensor. To this end, the battery is charged with the current flowing in the current sensor measuring the current and is used for a current value transmission, thereby reducing energy through self-sufficiency of the power required for collecting the current value.

Description

전류 센서를 이용한 에너지 하베스팅을 통한 전류 측정 장치 및 방법{Current Metering Apparatus and Method using an Energy Harvesting based on Current Sensor}BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a current measuring apparatus and method using energy harvesting using a current sensor,

본 발명은 전류 측정 기술에 관한 것으로, 더욱 상세하게는 전류를 측정하여 측정된 전류 데이터를 수집할 수 있도록 전송하는 전류 측정 장치 및 방법에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a current measuring technique, and more particularly, to a current measuring apparatus and method for measuring a current and transmitting measured current data.

에너지 절감을 위해서는 전기 에너지를 소비하고 있는 다양한 구역에 미터기를 설치하고, 사용 전력량을 확인하여, 소비량을 확인하고, 이를 개선하기 위한 방안을 마련하여야 한다.To save energy, meters should be installed in various areas consuming electrical energy, checking the amount of electricity used, checking the consumption amount, and preparing measures to improve it.

보다 나은 분석을 위해서는 미터기의 개수가 늘어나야 하는데, 그래야만 전력 소비 정보를 정확하게 수집/분석할 수 있기 때문이다. 하지만, 미터기의 개수 증가는 미터기에서 데이터를 수집하고 전송하기 위해 필요한 전력 소모의 증가로 이어진다.For better analysis, the number of meters must be increased, so that power consumption information can be accurately collected and analyzed. However, increasing the number of meters leads to an increase in the power consumption required to collect and transmit data at the meter.

이는, 에너지 절감을 위한 과정에서 발생하는 부작용에 해당하는 바, 이를 방지하기 위한 방안의 모색이 요청된다.This is a side effect that occurs in the process of energy saving, and it is requested to find a way to prevent it.

본 발명은 상기와 같은 문제점을 해결하기 위하여 안출된 것으로서, 본 발명의 목적은, 전류를 측정하는 전류 센서에 흐르는 전류로 배터리를 충전하여 전류값 전송에 이용하는 전류 측정 장치 및 방법을 제공함에 있다.It is an object of the present invention to provide a current measuring apparatus and method for charging a battery with a current flowing through a current sensor for measuring a current and using the current to transmit a current value.

상기 목적을 달성하기 위한 본 발명의 일 실시예에 따른, 전류 측정 장치는, 전류를 측정하는 전류 센서; 및 상기 전류 센서에 흐르는 전류로 충전되는 배터리;를 포함한다.According to an aspect of the present invention, there is provided a current measuring apparatus including: a current sensor for measuring a current; And a battery charged with a current flowing in the current sensor.

그리고, 상기 배터리에서 공급되는 전원을 이용하여, 전류값을 전송하는 송신기;를 더 포함할 수 있다.And a transmitter for transmitting a current value using the power supplied from the battery.

또한, 상기 송신기는, 상기 배터리의 전압이 기설정된 전압 이상이 되면, 상기 배터리에서 공급되는 전원을 이용할 수 있다.In addition, the transmitter may use a power source supplied from the battery when the voltage of the battery reaches a preset voltage or more.

그리고, 상기 송신기에 의한 전송 주기는, 상기 전류 센서에 의해 측정되는 전류의 크기에 반비례할 수 있다.The transmission period by the transmitter may be inversely proportional to the magnitude of the current measured by the current sensor.

또한, 상기 전류 센서는, CT(Current Transform) 센서이고, 상기 송신기는, 상기 전류 센서에 의해 측정된 전류값을 디지털 값으로 변환하고, 상기 디지털 값에 상기 CT 센서의 권선비를 곱하여 상기 전류값으로 산출할 수 있다.The current sensor is a CT (Current Transform) sensor. The transmitter converts the current value measured by the current sensor into a digital value, multiplies the digital value by the winding ratio of the CT sensor, Can be calculated.

그리고, 상기 송신기는, 상기 전류값을 무선으로 전송할 수 있다.The transmitter may transmit the current value by radio.

또한, 상기 전류 센서는, 전력 공급 선로에 흐르는 전류를 측정할 수 있다.Further, the current sensor can measure a current flowing in the power supply line.

한편, 본 발명의 다른 실시예에 따른, 전류 측정 방법은, 전류 센서가, 전류를 측정하는 단계; 및 상기 전류 센서에 흐르는 전류로 배터리를 충전하는 단계;를 포함한다.According to another aspect of the present invention, there is provided a current measuring method, comprising: measuring current by a current sensor; And charging the battery with the current flowing in the current sensor.

이상 설명한 바와 같이, 본 발명의 실시예들에 따르면, 전류를 측정하는 전류 센서에 흐르는 전류로 배터리를 충전하여 전류값 전송에 이용하여, 전류값 수집을 위해 필요한 전력을 자급함으로 인한 에너지 절감을 이룰 수 있게 된다.As described above, according to the embodiments of the present invention, it is possible to charge the battery with the current flowing through the current sensor for measuring the current and use it for current value transmission, thereby achieving energy saving by self- .

도 1은 본 발명의 일 실시예에 따른 전류 측정 장치를 도시한 도면,
도 2는 CT 센서들을 예시한 이미지,
도 3은 본 발명의 다른 실시예에 따른 전류 측정 방법의 설명에 제공되는 흐름도,
도 4는 전류값 전송 주기를 나타낸 그래프이다.1 is a view showing a current measuring device according to an embodiment of the present invention,
Figure 2 is an image illustrating CT sensors,
3 is a flow chart provided in the explanation of the current measurement method according to another embodiment of the present invention,
4 is a graph showing a current value transmission period.

이하에서는 도면을 참조하여 본 발명을 보다 상세하게 설명한다.Hereinafter, the present invention will be described in detail with reference to the drawings.

도 1은 본 발명의 일 실시예에 따른 전류 측정 장치를 도시한 도면이다. 본 발명의 실시예에 따른 전류 측정 장치는, 전류 센서에 흐르는 전류를 이용한 에너지 하베스팅을 통한 필요한 전력을 자가 공급한다.1 is a view showing a current measuring apparatus according to an embodiment of the present invention. The current measuring device according to the embodiment of the present invention self-supplies necessary power through energy harvesting using current flowing in the current sensor.

이와 같은 기능을 수행하는 본 발명의 실시예에 따른 전류 측정 장치는, 도 1에 도시된 바와 같이, CT(Current Transform) 센서(110), 배터리(120) 및 송신기(130)를 포함한다.As shown in FIG. 1, the current measuring apparatus according to an exemplary embodiment of the present invention includes a CT (Current Transform) sensor 110, a battery 120, and a transmitter 130.

CT 센서(110)는 전력 공급 선로에 흐르는 전류를 측정하기 위한 전류 센서의 일종이다. CT 센서(110)는 전력 공급 선로에 흐르는 전류에 의해 유도 전류가 발생하여 흐른다.The CT sensor 110 is a kind of current sensor for measuring the current flowing in the power supply line. The CT sensor 110 generates an induced current by the current flowing in the power supply line and flows.

CT 센서(110)에 흐르는 전류는 권선비에 의해 결정된다. 권선비가 200:1인 경우, CT 센서(110)에는 전력 공급 선로에 흐르는 전류 크기의 1/200인 전류가 흐른다.The current flowing through the CT sensor 110 is determined by the turns ratio. When the winding ratio is 200: 1, a current of 1/200 of the current flowing in the power supply line flows to the CT sensor 110.

도 2에는 CT 센서(110)들을 예시한 이미지이다. CT 센서(110)는 주로 고압의 전류 흐름을 측정한다. CT 센서(110)는 스플릿 코어 형태로 사용하여 부하 장치의 전원 off 없이 분전반에 쉽고 편리하게 설치가 가능하다.2 is an image exemplifying the CT sensors 110. FIG. The CT sensor 110 measures primarily the flow of current at high pressure. The CT sensor 110 is used as a split core type so that it can be easily and conveniently installed in the distribution board without turning off the power of the load device.

배터리(120)는 CT 센서(110)에 흐르는 전류로 충전된다. 배터리(120)에 충전량이 늘어나 배터리(120)의 전압이 기준 전압 이상이 되면, 송신기(130)가 동작하게 된다.The battery 120 is charged with the current flowing in the CT sensor 110. [ When the charged amount of the battery 120 is increased and the voltage of the battery 120 becomes equal to or higher than the reference voltage, the transmitter 130 operates.

이에 의해, 본 발명의 실시예에 따른 전류 측정 장치는 외부 전원 공급이 ㅍ필요가 없다. 전류 측정에 이용되는 CT 센서(110)를 충전에 이용하기 때문에, 충전을 위한 전력 발생/인가 장치도 필요가 없다.Thus, the current measuring apparatus according to the embodiment of the present invention does not need external power supply. Since the CT sensor 110 used for current measurement is used for charging, there is no need for a power generation / application device for charging.

송신기(130)는 배터리(120)에서 공급되는 전원을 이용하여, 전류값을 모니터링 시스템에 무선으로 전송한다.The transmitter 130 wirelessly transmits the current value to the monitoring system using the power supplied from the battery 120.

이 과정에서, 송신기(130)는 CT 센서(110)에 흐르는 전류값을 디지털 값으로 변환하고, 디지털 값에 CT 센서(110)의 권선비를 곱하여 전력 공급 선로의 전류값을 산출한다.In this process, the transmitter 130 converts the current value flowing through the CT sensor 110 into a digital value, and multiplies the digital value by the turn ratio of the CT sensor 110 to calculate the current value of the power supply line.

전류값을 산출하고, 산출된 전류값을 무선으로 전송함에 있어, 송신기(130)는 배터리(120)에 충전된 전원을 이용한다.The transmitter 130 calculates the current value and wirelessly transmits the calculated current value. The transmitter 130 uses a power source charged in the battery 120.

도 1에 도시된 전류 측정 장치에 의한 전류 측정 과정이 도 3에 나타나 있다. 도 3은 본 발명의 다른 실시예에 따른 전류 측정 방법의 설명에 제공되는 흐름도이다.The current measurement process by the current measuring apparatus shown in FIG. 1 is shown in FIG. 3 is a flow chart provided in the explanation of the current measurement method according to another embodiment of the present invention.

도 3에 도시된 바와 같이, 먼저 CT 센서(110)에 흐르는 전류로 배터리(120)가 충전된다(S210).As shown in FIG. 3, first, the battery 120 is charged by the current flowing in the CT sensor 110 (S210).

배터리(120)의 전압이 기준 전압 이상이 되면(S210), 송신기(130)가 트리거링 되어 동작한다.When the voltage of the battery 120 becomes equal to or higher than the reference voltage (S210), the transmitter 130 is triggered and operates.

구체적으로, 송신기(130)는 배터리(120)를 통해 인가되는 전원을 이용하여, 전력 전송 전로에 흐르는 전류값을 산출하고(S230), 산출된 전류값을 모니터링 시스템에 무선으로 전송한다(S240).Specifically, the transmitter 130 calculates a current value flowing in the power transmission converter using the power supplied through the battery 120 (S230), and transmits the calculated current value to the monitoring system by radio (S240) .

이와 같이, 전력 전송 전로에 흐르는 전류값의 산출과 전송은 배터리(120)에 의한 전원 공급이 필요하므로, 배터리(120)의 전압이 기설정된 전압 이상이 되는 경우에 수행된다.As described above, the calculation and transmission of the current value flowing in the power transmission converter are performed when the voltage of the battery 120 becomes equal to or higher than a predetermined voltage because power supply by the battery 120 is required.

이에, 송신기(130)에 의한 전송 주기는, 도 4에 도시된 바와 같이, CT 센서(110)에 의해 측정되는 전류의 크기에 반비례한다.Therefore, the transmission period by the transmitter 130 is inversely proportional to the magnitude of the current measured by the CT sensor 110, as shown in FIG.

전류는 전력 소모에 비례하므로, 전력 소모가 많으면 전류값 송신 주기가 짧아지고, 전력 소모가 작으면 전류값 송신 주기가 길어진다고 볼 수도 있다.Since the current is proportional to the power consumption, if the power consumption is large, the current value transmission period is shortened. If the power consumption is small, the current value transmission period is considered to be long.

예를 들어, CT 센서(110)가 설치된 선로에 5A, 10A 등의 큰 전류가 흐르면 충전 시간이 빨라 비교적 자주 전류값이 전송되어 수집되고, 1A 등으로 작게 흐르면 충전 시간이 느려 비교적 간헐적으로 전류값이 전송되어 수집된다.For example, if a large current such as 5A or 10A flows through the line on which the CT sensor 110 is installed, the charging time is relatively fast and the current value is transmitted and collected relatively frequently. Are collected and transmitted.

이와 같이, CT 센서(110)를 이용한 배터리(120)의 충전은 전류값 전송 주기를 늦추게 되는 경우를 유발할 수 있다. 하지만, 이 경우는 전력 소모가 적은 경우이므로, 전류값 정보가 간헐적으로 제공되어도, 전력 사용량을 분석함에 있어서는 크게 문제되지 않는다.As described above, charging of the battery 120 using the CT sensor 110 may cause a delay of the current value transmission period. However, in this case, since the power consumption is small, even if the current value information is provided intermittently, there is no great problem in analyzing the power consumption.

한편, 에너지 모니터링 시스템은 주기적으로 수신되는 전력값으로부터 전력 소모 패턴을 파악하기 위한 프로세싱이 필요하다. 구체적으로는, 전류값이 제공되지 않는 구간에 대한 전류값을 보간 등을 통해 생성하는 것이다.On the other hand, the energy monitoring system needs processing to grasp the power consumption pattern from the power value periodically received. Specifically, the current value for the section in which the current value is not provided is generated through interpolation or the like.

지금까지, 전류센서를 이용한 에너지 하베스팅을 통한 전류 측정 장치 및 방법에 대해 바람직한 실시예를 들어 상세히 설명하였다.Up to now, an apparatus and a method for measuring current through energy harvesting using a current sensor have been described in detail with a preferred embodiment.

위 실시예에서 언급한 CT 센서(110)는 전류 센서의 일종으로 언급한 것이다. 다른 종류의 전류 센서로 대체될 수 있음은 물론이다.The CT sensor 110 mentioned in the above embodiment is referred to as a kind of current sensor. It can be replaced with another type of current sensor.

한편, 본 실시예에 따른 장치와 방법의 기능을 수행하게 하는 컴퓨터 프로그램을 수록한 컴퓨터로 읽을 수 있는 기록매체에도 본 발명의 기술적 사상이 적용될 수 있음은 물론이다. 또한, 본 발명의 다양한 실시예에 따른 기술적 사상은 컴퓨터로 읽을 수 있는 기록매체에 기록된 컴퓨터로 읽을 수 있는 코드 형태로 구현될 수도 있다. 컴퓨터로 읽을 수 있는 기록매체는 컴퓨터에 의해 읽을 수 있고 데이터를 저장할 수 있는 어떤 데이터 저장 장치이더라도 가능하다. 예를 들어, 컴퓨터로 읽을 수 있는 기록매체는 ROM, RAM, CD-ROM, 자기 테이프, 플로피 디스크, 광디스크, 하드 디스크 드라이브, 등이 될 수 있음은 물론이다. 또한, 컴퓨터로 읽을 수 있는 기록매체에 저장된 컴퓨터로 읽을 수 있는 코드 또는 프로그램은 컴퓨터간에 연결된 네트워크를 통해 전송될 수도 있다.It goes without saying that the technical idea of the present invention can also be applied to a computer-readable recording medium having a computer program for performing the functions of the apparatus and method according to the present embodiment. In addition, the technical idea according to various embodiments of the present invention may be embodied in computer-readable code form recorded on a computer-readable recording medium. The computer-readable recording medium is any data storage device that can be read by a computer and can store data. For example, the computer-readable recording medium may be a ROM, a RAM, a CD-ROM, a magnetic tape, a floppy disk, an optical disk, a hard disk drive, or the like. In addition, the computer readable code or program stored in the computer readable recording medium may be transmitted through a network connected between the computers.

또한, 이상에서는 본 발명의 바람직한 실시예에 대하여 도시하고 설명하였지만, 본 발명은 상술한 특정의 실시예에 한정되지 아니하며, 청구범위에서 청구하는 본 발명의 요지를 벗어남이 없이 당해 발명이 속하는 기술분야에서 통상의 지식을 가진자에 의해 다양한 변형실시가 가능한 것은 물론이고, 이러한 변형실시들은 본 발명의 기술적 사상이나 전망으로부터 개별적으로 이해되어져서는 안될 것이다.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, on the contrary, It will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the present invention.

110 : CT(Current Transform) 센서
120 : 배터리
130 : 송신기110: CT (Current Transform) sensor
120: Battery
130: Transmitter

Claims (8)

전류를 측정하는 전류 센서; 및
상기 전류 센서에 흐르는 전류로 충전되는 배터리;를 포함하는 것을 특징으로 하는 전류 측정 장치.
A current sensor for measuring current; And
And a battery that is charged with a current flowing through the current sensor.
청구항 1에 있어서,
상기 배터리에서 공급되는 전원을 이용하여, 전류값을 전송하는 송신기;를 더 포함하는 것을 특징으로 하는 전류 측정 장치.
The method according to claim 1,
And a transmitter for transmitting a current value using the power supplied from the battery.
청구항 2에 있어서,
상기 송신기는,
상기 배터리의 전압이 기설정된 전압 이상이 되면, 상기 배터리에서 공급되는 전원을 이용하는 것을 특징으로 하는 전류 측정 장치.
The method of claim 2,
The transmitter includes:
Wherein when the voltage of the battery becomes equal to or higher than a predetermined voltage, the power supplied from the battery is used.
청구항 2에 있어서,
상기 송신기에 의한 전송 주기는,
상기 전류 센서에 의해 측정되는 전류의 크기에 반비례하는 것을 특징으로 하는 전류 측정 장치.
The method of claim 2,
The transmission period by the transmitter may be,
Wherein the current sensor is inversely proportional to the magnitude of the current measured by the current sensor.
청구항 2에 있어서,
상기 전류 센서는,
CT(Current Transform) 센서이고,
상기 송신기는,
상기 전류 센서에 의해 측정된 전류값을 디지털 값으로 변환하고, 상기 디지털 값에 상기 CT 센서의 권선비를 곱하여 상기 전류값으로 산출하는 것을 특징으로 하는 전류 측정 장치.
The method of claim 2,
Wherein the current sensor comprises:
CT (Current Transform) sensor,
The transmitter includes:
Converts the current value measured by the current sensor into a digital value, and multiplies the digital value by the winding ratio of the CT sensor to calculate the current value.
청구항 2에 있어서,
상기 송신기는,
상기 전류값을 무선으로 전송하는 것을 특징으로 하는 전류 측정 장치.
The method of claim 2,
The transmitter includes:
And the current value is transmitted wirelessly.
청구항 1에 있어서,
상기 전류 센서는,
전력 공급 선로에 흐르는 전류를 측정하는 것을 특징으로 하는 전류 측정 장치.
The method according to claim 1,
Wherein the current sensor comprises:
And a current flowing through the power supply line is measured.
전류 센서가, 전류를 측정하는 단계; 및
상기 전류 센서에 흐르는 전류로 배터리를 충전하는 단계;를 포함하는 것을 특징으로 하는 전류 측정 방법.
The current sensor measuring a current; And
And charging the battery with the current flowing through the current sensor.
KR1020160062714A 2016-05-23 2016-05-23 Current Metering Apparatus and Method using an Energy Harvesting based on Current Sensor KR20170131911A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110208597A (en) * 2019-05-23 2019-09-06 宁波大学 A kind of self-power wireless current monitoring system based on simplex winding current transformer
KR20190003187U (en) * 2018-06-18 2019-12-27 아틀라스 캅코 에어파워, 남로체 벤누트삽 A current sensor
KR20200104508A (en) * 2019-02-27 2020-09-04 홍준기 Clamp mounted electric power measuring apparatus
KR102205321B1 (en) * 2020-03-10 2021-01-20 주식회사 케이디파워 AC single-phase and three-phase energy harvesting wireless current sensor system

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20190003187U (en) * 2018-06-18 2019-12-27 아틀라스 캅코 에어파워, 남로체 벤누트삽 A current sensor
US10935579B2 (en) 2018-06-18 2021-03-02 Atlas Copco Airpower, Naamloze Vennootschap Current sensor
KR20200104508A (en) * 2019-02-27 2020-09-04 홍준기 Clamp mounted electric power measuring apparatus
CN110208597A (en) * 2019-05-23 2019-09-06 宁波大学 A kind of self-power wireless current monitoring system based on simplex winding current transformer
CN110208597B (en) * 2019-05-23 2021-04-23 宁波大学 Self-powered wireless current monitoring system based on single-winding current transformer
KR102205321B1 (en) * 2020-03-10 2021-01-20 주식회사 케이디파워 AC single-phase and three-phase energy harvesting wireless current sensor system

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