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WO2013118257A1 - Wattmètre électronique - Google Patents

Wattmètre électronique Download PDF

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Publication number
WO2013118257A1
WO2013118257A1 PCT/JP2012/052819 JP2012052819W WO2013118257A1 WO 2013118257 A1 WO2013118257 A1 WO 2013118257A1 JP 2012052819 W JP2012052819 W JP 2012052819W WO 2013118257 A1 WO2013118257 A1 WO 2013118257A1
Authority
WO
WIPO (PCT)
Prior art keywords
infrared
terminal cover
input
hour meter
terminal
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2012/052819
Other languages
English (en)
Japanese (ja)
Inventor
剛士 斎藤
桂州 近藤
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to CN201280069423.8A priority Critical patent/CN104115014A/zh
Priority to PCT/JP2012/052819 priority patent/WO2013118257A1/fr
Publication of WO2013118257A1 publication Critical patent/WO2013118257A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R11/00—Electromechanical arrangements for measuring time integral of electric power or current, e.g. of consumption
    • G01R11/02—Constructional details
    • G01R11/04—Housings; Supporting racks; Arrangements of terminals
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R11/00—Electromechanical arrangements for measuring time integral of electric power or current, e.g. of consumption
    • G01R11/02—Constructional details
    • G01R11/24—Arrangements for avoiding or indicating fraudulent use

Definitions

  • This invention relates to a device for monitoring the terminal cover mounting state in order to prevent unauthorized operation after the installation and wiring of an electronic watt-hour meter used for electricity bill transactions.
  • an electronic watt-hour meter has a mechanism for detecting a terminal cover attachment state in order to monitor whether an illegal wiring operation such as a theft of electric power is performed. For example, by placing a switch on the body and a protrusion on the terminal cover, when the terminal cover is attached to the body, the protrusion on the terminal cover presses the body switch and the terminal cover is attached. When the terminal cover is removed when the terminal cover is removed, the main body switch and the terminal cover protrusion are separated to detect whether the terminal cover has been removed and to determine whether an unauthorized wiring operation has been performed. There is something to do. Further, as a method for detecting the attachment of the terminal cover, there is a method in which the position of the sealing screw is detected by a sensor.
  • the present invention has been made to solve the above-described problems, and provides an electronic watt-hour meter with improved detection reliability with a small number of parts.
  • An electronic watt-hour meter includes a CPU for calculating necessary electric quantities including electric energy from currents and voltages input from an electric circuit to be measured, and electric power for storing data of the calculated electric quantities.
  • a watt-hour meter main unit having a watt-hour metering function central portion provided with a watt-metering portion and an output portion for transmitting the electric quantity data stored in the watt-hour meter to the outside, and input from the electric circuit
  • the electronic watt-hour meter integrally including a terminal block having an input terminal for taking in current and voltage and a terminal portion provided with a terminal cover covering the input terminal, a portion where the input terminal does not exist in the terminal block
  • An infrared ray transmitting element and an infrared ray receiving element which are disposed separately from each other in the installation area, and the infrared ray transmitting element and the infrared ray receiving element on the back surface of the terminal cover.
  • a reflective member is provided that reflects infrared rays transmitted from the infrared transmitting element and inputs the infrared rays to the infrared receiving element when the terminal cover is closed and the terminal cover is closed, and the terminal cover is closed when the terminal cover is closed.
  • the infrared transmitting element, the infrared receiving element, and the reflecting member are covered by the terminal cover, and when the terminal cover is closed, the input is performed and the terminal cover is opened or removed. Is to improve the detection reliability with a small number of parts by determining by the CPU whether or not the terminal cover is closed from the infrared input state that the input is not performed. .
  • An electronic watt-hour meter includes a CPU for calculating necessary electric quantities including electric energy from currents and voltages input from an electric circuit to be measured, and an electric energy for storing data of the calculated electric quantities.
  • a watt-hour meter main unit having a watt-hour metering function central portion including a measuring unit and an output unit for transmitting the data of the various electric quantities stored in the watt-hour measuring unit to the outside, and input from the electric circuit
  • an electronic watt-hour meter integrally including a terminal block having an input terminal for taking in current and voltage and a terminal portion provided with a terminal cover covering the input terminal, a portion of the terminal block where the input terminal does not exist The formed installation area, the infrared transmission element and the infrared reception element that are arranged separately from each other in the installation area, and the infrared transmission element and the infrared reception element on the back surface of the terminal cover
  • a reflective member is provided that reflects infrared rays transmitted from the infrared transmitting element and
  • the infrared transmitting element, the infrared receiving element, and the reflecting member are covered by the terminal cover, and when the terminal cover is closed, the input is performed and the terminal cover is opened or removed. Since the CPU determines whether the terminal cover is closed or not from the infrared input state that the input is not performed, a mechanical switch is not required and the detection reliability is improved. Can be improved.
  • FIG. 2 is a side sectional view of the cross section taken along the line AA in FIG.
  • FIG. 3 is a side sectional view of a section taken along line BB in FIG. 2 as viewed in the direction of the arrow.
  • FIG. 2 is a side sectional view of the cross section taken along the line AA in FIG.
  • FIG. 3 is a side sectional view of a section taken along line BB in FIG. 2 as viewed in the direction of the arrow.
  • FIG. 3 is a block diagram which shows an example of an internal structure of the electronic watt-hour meter in Embodiment 1 of this invention. It is explanatory drawing explaining an infrared data transmission / reception state when a state changes from FIG. 1 to FIG.
  • FIG. 1 is an external perspective view of an electronic watt-hour meter 100 according to Embodiment 1 of the present invention
  • FIG. 2 is an external perspective view of the electronic watt-hour meter 100 according to Embodiment 1 of the present invention with the terminal cover 2 removed.
  • 3 is a cross-sectional view taken along the line AA of FIG. 1
  • FIG. 4 is a cross-sectional view taken along the line BB of FIG. 2 showing the electronic watt-hour meter 100 with the terminal cover 2 removed
  • FIG. 6 is a block diagram showing the internal configuration of the meter 100
  • FIG. 6 is an explanatory diagram for explaining the infrared data transmission / reception state when the state changes from FIG. 1 to FIG. 2
  • FIG. 7 is a flowchart showing the operation of detecting terminal cover removal
  • 8 is an explanatory diagram for explaining an infrared data transmission / reception state when the state changes from FIG. 2 to FIG. 1
  • FIG. 9 is a flowchart showing an operation of terminal cover attachment detection.
  • 1A is a watt-hour meter main unit
  • 1B is a terminal unit
  • 1BT is an input terminal
  • 1BTA is an installation area
  • 1BTB is a terminal block
  • 2 is a terminal cover
  • 3 is an infrared data transmission unit
  • 4 is an infrared ray.
  • a data receiving unit 5 is a probe fixing guide for infrared communication.
  • 6 is an infrared transmitting element for transmitting infrared data
  • 7 is an infrared receiving element for receiving infrared data
  • 8a and 8b are light guide lenses
  • 9 is a reflecting member
  • 10 is a cover.
  • the cover 10 is made of a transparent resin molded product, and the light guide lenses 8 a and 8 b are formed integrally with the cover 10.
  • the electronic watt-hour meter 100 includes a current input unit 22 that converts an input from CT and VT of the electric circuit PSL into a digital signal, and a current value input from the voltage input unit 23 and a voltage from the voltage value
  • a measurement calculation unit 24 that calculates various electric quantities such as current, power, reactive power, power factor, and frequency
  • a display unit 25 that displays measurement values and setting items calculated by the measurement calculation unit 24, and a measurement calculation unit.
  • a CPU 26 that performs measurement calculation by 24, various settings for display on the display unit 25, and display content switching control, and an operation unit 27 that performs setting operations on the CPU 26 are provided.
  • the electronic indicator 100 further includes a pulse output unit 28 for outputting a pulse according to the integrated value of the electric energy to the outside, and setting data for each setting item such as setting of pulse output and constant setting of CT and VT.
  • An infrared communication control unit 29 that can send and receive to / from an external setting device, a wireless communication unit 30 for reporting the meter reading value and unauthorized use, etc., to an electric power company center, and an alarm issuing unit 40 that issues an alarm I have.
  • the infrared communication control unit 29 is connected to the infrared transmission element 6 and the infrared reception element 7 that transmit and receive the infrared data described above.
  • FIG. 6 is an infrared data transmission / reception state diagram when the state changes from the terminal cover 2 attached state of FIG. 1 to the terminal cover 2 detached state of FIG. 2
  • FIG. 7 is the terminal cover of FIG. 1 from the terminal cover 2 detached state of FIG. It is an infrared data transmission / reception state figure when a state changes to 2 mounting state.
  • infrared data transmitted from the infrared transmission element 6 is guided upward through the light guide lens 8a, reflected by the surface of the reflecting member 9, and received by the infrared light through the light guide lens 8b.
  • the electronic watt-hour meter 100 performs this operation at regular intervals, and when the transmission / reception is normally performed, the terminal cover 2 detects that the terminal cover 2 is attached.
  • the infrared data transmitted from the infrared transmission element 6 is guided to the upper part through the light guide lens 8a. Infrared data is not guided to the receiving element 7 and no infrared data is received. As shown in FIG. 6, the electronic watt-hour meter 100 detects that the terminal cover 2 has been removed when the infrared data is not received.
  • a CPU 26 that calculates necessary electric quantities including electric energy from current and voltage input from the electric circuit PSL to be measured, and an electric energy measuring unit 24 that stores data of the calculated electric quantities.
  • An electric energy meter main body 1A having a central portion of an electric energy metering function including an output unit 28 for transmitting the electric quantity data stored in the electric energy meter 24 to the outside, and an input from the electric circuit PSL
  • An electronic watt-hour meter 100 integrally including a terminal block 1BTB having an input terminal 1BT for taking in current and voltage and a terminal portion 1B having a terminal cover 2 covering the input terminal 1BT, An installation area 1BTA formed in a portion of the 1BTB where the input terminal 1BT does not exist, and an infrared ray transmission arranged in parallel and spaced apart from the installation area 1BTA.
  • a reflecting member 9 that reflects the input infrared rays and inputs the reflected infrared rays to the infrared receiving element 7.
  • the infrared transmitting element 6, the infrared receiving element 7, and the reflecting member 9 are The infrared ray is covered by the terminal cover 2, and the infrared ray input is performed when the terminal cover 2 is closed, and the infrared ray input is not performed when the terminal cover 2 is opened or removed.
  • the CPU determines whether or not the terminal cover 2 is closed from the input state.
  • the CPU 26 detects that the infrared input to the infrared receiving element 7 does not exist for a predetermined time, it reports to the outside that the infrared input to the infrared receiving element 7 does not exist for a predetermined time. To do. Further, the notification to the outside is an abnormality report for reporting an abnormality.
  • the communication unit 30 for reporting to the outside is provided separately from the output unit 28 for transmitting the data of various electric quantities to the outside.
  • the predetermined time is set from the outside via the communication unit 30.
  • an alarm generator 40 that issues an alarm is incorporated in the watt-hour main body 1A. is there.
  • the predetermined time is variable.
  • the terminal cover 2 is closed from the infrared input state where the input is performed when the terminal cover 2 is closed and the input is not performed when the terminal cover 2 is opened or removed. It is possible to set and cancel the function of determining whether or not the user has Whether the terminal cover is closed from the infrared input state where the input is performed when the terminal cover is closed and the input is not performed when the terminal cover is opened or removed. This function can be set and canceled from the outside via the communication unit.
  • the above-described unauthorized wiring is performed by opening the terminal cover 2 and short-circuiting between the input terminals 1BT and 1BT connected to the CT output terminal with a conductive wire. Therefore, in order to detect unauthorized wiring performed by opening the terminal cover 2, the following detection operation for removing the terminal cover 2 is performed in the present embodiment.
  • detection data for attachment of the terminal cover 2 is transmitted from the infrared transmission element 7 at regular intervals.
  • the detection data transmitted from the infrared transmitting element 6 is reflected by the reflecting member 9 and received by the infrared receiving element 7.
  • the detection data is not reflected by the reflecting member 9, so that the infrared receiving element 7 cannot receive data, and the removal of the terminal cover 2 can be detected.
  • the CPU 26 transmits detection data from the infrared communication control unit 29 via the infrared transmission element 6 (step S11), and determines whether the detection data can be received from the infrared reception element 7 via the infrared communication control unit 29. Judgment is made (step S12). If it can be received, the counter N is reset (step S13), and a waiting process for a predetermined time until the next detection data transmission (step S11) is performed (step S13).
  • step S12 the process proceeds to step S15, where the counter N is incremented, and it is then determined whether the counter N exceeds the first predetermined number (Ste S16). If the counter N does not exceed the first predetermined number, the process proceeds to step S14 to perform a waiting process for a predetermined time until the next detection data transmission (step S11) (step S13). If the counter N exceeds the first predetermined number, the terminal cover 2 performs removal detection processing (step S17).
  • step S18 it is determined whether or not communication data from an external setting device, which is the original purpose of infrared communication, has been received. If communication data is received from the setting device, it is not an unauthorized removal of the terminal cover, so the processing ends. If communication data from the setting device has not been received, the process proceeds to step S19, where it is determined whether the counter M has exceeded the second predetermined number. If the counter M does not exceed the second predetermined number, the process proceeds to step S20, an integration process for counting up the counter M is performed, and the process returns to the process for determining the received data from the setter in step S18.
  • step S21 If the counter M exceeds the second predetermined number, the process proceeds to step S21, and after performing an unauthorized operation detection process, the wireless communication unit 30 reports an abnormality to the outside and issues an alarm from the alarm output.
  • This fixed time can be set in advance from the infrared data transmitter / receiver, and can also be set from the outside using a separately provided communication means.
  • a certain time (indicated as “certain time” in FIG. 8) is taken to detect that the terminal cover 2 is attached. Start sending data automatically. If the terminal cover 2 is attached, the detection data transmitted from the infrared transmitting element 6 is reflected by the reflecting member 9 and received by the infrared receiving element 7. Can do.
  • the predetermined time can be set in advance from the infrared data transmitter / receiver, and can also be set from the outside using a separately provided communication means. The setting from the outside may be performed by an external setting device (not shown) installed in a remote place far from the watt-hour meter.
  • the functions of the external setting device are roughly classified into the following three.
  • Data measured values such as electric energy, instantaneous electric power, and power factor
  • Control open / close
  • the relay built in the watt-hour meter The functions of the external setting device are roughly classified into the following three.
  • Set parameters date / time, metering method (postpaid or prepaid), etc.) for the electricity meter.
  • step S101 After completing the infrared communication with the setting device via the infrared communication control unit 29 (step S101), the CPU 26 performs a waiting process for a predetermined time (step S102). When the predetermined time has elapsed, after the counter L is reset (step S103), the detection data is transmitted from the infrared communication control unit 29 via the infrared transmission element 6 (step S104), and the detection data is transmitted to the infrared reception element 7. Is received through the infrared communication control unit 29 (step S105). If the terminal cover 2 has been received, a process for detecting the attachment of the terminal cover 2 is performed (step S106).
  • step S105 if the detection data cannot be received in step S105, the process proceeds to step S107, and it is determined whether or not the counter L has exceeded the third predetermined number. If the counter L does not exceed the third predetermined number, the counter L is incremented (step S108), and then the next detection data is transmitted (step S104). If the counter L exceeds the third predetermined number in step S107, after processing for abnormal attachment of the terminal cover 2 (step S109), the wireless communication unit 30 reports an abnormality to the outside (step S110). An alarm is issued from the alarm output.
  • the terminal cover mounting detection data transmission can be started by transmitting a start request data when the infrared communication ends.
  • the detection data transmitted from the infrared data transmission / reception unit 29 communicating with the external setting device via the infrared transmission element 6 is reflected by the reflection member 9 provided on the terminal cover 2, and the detection is performed. Since the presence / absence of the terminal cover is detected by receiving the business data from the infrared receiving element 7 by the infrared data transmission / reception unit 29, a mechanical switch is not required and the reliability of detection of the terminal cover 2 can be improved.
  • the infrared data transmitting / receiving unit 29 the infrared transmitting element 6, and the infrared receiving element 7 provided to communicate with an external setting device, a switch for detecting the terminal cover 2 is not necessary, and the cost can be reduced.
  • the terminal cover 2 is detected using infrared rays for communication, it is not necessary to provide a hole in the portion where the terminal cover 2 is detected, so that the waterproof performance can be improved.
  • 1 Energy meter 1A Energy meter body, 1B terminal, 1BT input terminal, 1BTA installation area, 1BTB terminal block, 2 Terminal cover, 3 Infrared data transmitter, 4 Infrared data receiver 5 Probe fixing guide for infrared communication, 6 Infrared transmitting element, 7 Infrared receiving element, 8a light guide lens, 8b light guide lens, 9 reflective member, 10 cover, 22 current input section, 23 voltage input section, 24 Electricity meter, 25 Display, 26 CPU, 28 pulse output unit, 29 infrared communication control unit, 30 wireless communication unit, 40 alarm reporting unit, 100 electronic watt-hour meter, PSL electric circuit.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)
PCT/JP2012/052819 2012-02-08 2012-02-08 Wattmètre électronique Ceased WO2013118257A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201280069423.8A CN104115014A (zh) 2012-02-08 2012-02-08 电子式电能计量装置
PCT/JP2012/052819 WO2013118257A1 (fr) 2012-02-08 2012-02-08 Wattmètre électronique

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2012/052819 WO2013118257A1 (fr) 2012-02-08 2012-02-08 Wattmètre électronique

Publications (1)

Publication Number Publication Date
WO2013118257A1 true WO2013118257A1 (fr) 2013-08-15

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WO (1) WO2013118257A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015149069A (ja) * 2014-02-07 2015-08-20 ゼネラル・エレクトリック・カンパニイ ユーティリティメータにおける改竄検出のためのシステムおよび方法
CN105606857A (zh) * 2015-12-24 2016-05-25 华立科技股份有限公司 一种近红外通讯和脉冲灯一体式电能表
WO2017006380A1 (fr) * 2015-07-03 2017-01-12 三菱電機株式会社 Wattheuremètre électronique
JP2018081016A (ja) * 2016-11-17 2018-05-24 東光東芝メーターシステムズ株式会社 電力量計用通信装置
WO2018229939A1 (fr) * 2017-06-15 2018-12-20 三菱電機株式会社 Watt-heuremètre
EP4475102A1 (fr) * 2023-06-07 2024-12-11 Sagemcom Energy & Telecom Sas Detection optique de l'ouverture d'un boitier

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CN116047136A (zh) * 2023-02-28 2023-05-02 浙江正泰仪器仪表有限责任公司 一种智能电表、电力设备及防止窃电的方法

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JPS63249865A (ja) * 1987-04-06 1988-10-17 Sharp Corp 複写機
JP2002257862A (ja) * 2001-02-28 2002-09-11 Mitsubishi Electric Corp 電力量計
JP2008134193A (ja) * 2006-11-29 2008-06-12 Toshiba Corp 電力量計
JP2009257786A (ja) * 2008-04-11 2009-11-05 Tokyo Electric Power Co Inc:The 電力量計

Cited By (13)

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Publication number Priority date Publication date Assignee Title
JP2020144902A (ja) * 2014-02-07 2020-09-10 アクララ ミーターズ リミテッド ライアビリティ カンパニー ユーティリティメータにおける改竄検出のためのシステムおよび方法
JP6992118B2 (ja) 2014-02-07 2022-01-13 アクララ ミーターズ リミテッド ライアビリティ カンパニー ユーティリティメータにおける改竄検出のためのシステムおよび方法
EP2905585B1 (fr) * 2014-02-07 2021-07-28 Aclara Meters LLC Système et procédé de détection de tentatives frauduleuses dans un compteur de services
JP2015149069A (ja) * 2014-02-07 2015-08-20 ゼネラル・エレクトリック・カンパニイ ユーティリティメータにおける改竄検出のためのシステムおよび方法
JPWO2017006380A1 (ja) * 2015-07-03 2017-10-19 三菱電機株式会社 電子式電力量計
WO2017006380A1 (fr) * 2015-07-03 2017-01-12 三菱電機株式会社 Wattheuremètre électronique
CN105606857B (zh) * 2015-12-24 2018-06-12 华立科技股份有限公司 一种近红外通讯和脉冲灯一体式电能表
CN105606857A (zh) * 2015-12-24 2016-05-25 华立科技股份有限公司 一种近红外通讯和脉冲灯一体式电能表
JP2018081016A (ja) * 2016-11-17 2018-05-24 東光東芝メーターシステムズ株式会社 電力量計用通信装置
WO2018229939A1 (fr) * 2017-06-15 2018-12-20 三菱電機株式会社 Watt-heuremètre
JPWO2018229939A1 (ja) * 2017-06-15 2019-11-07 三菱電機株式会社 電力量計
EP4475102A1 (fr) * 2023-06-07 2024-12-11 Sagemcom Energy & Telecom Sas Detection optique de l'ouverture d'un boitier
FR3149695A1 (fr) * 2023-06-07 2024-12-13 Sagemcom Energy & Telecom Sas Détection optique de l’ouverture d’un boîtier

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