JPS5726761A - Electronic watt-hour meter - Google Patents

Electronic watt-hour meter

Info

Publication number
JPS5726761A
JPS5726761A JP10227580A JP10227580A JPS5726761A JP S5726761 A JPS5726761 A JP S5726761A JP 10227580 A JP10227580 A JP 10227580A JP 10227580 A JP10227580 A JP 10227580A JP S5726761 A JPS5726761 A JP S5726761A
Authority
JP
Japan
Prior art keywords
temperature
multiplier
electric power
power information
magnetic
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.)
Pending
Application number
JP10227580A
Other languages
Japanese (ja)
Inventor
Ryoji Gamo
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co Ltd
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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP10227580A priority Critical patent/JPS5726761A/en
Publication of JPS5726761A publication Critical patent/JPS5726761A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R21/00—Arrangements for measuring electric power or power factor

Abstract

PURPOSE:To improve the precision of measurement of electric energy by making electric power information linear by detecting ambient temperature and by removing a temperature fluctuation component and a nonlinear component that the electric power information has on the basis of the temperature information. CONSTITUTION:Light beams from light emitting diodes 20a and 21a of the 1st and 2nd photocouplers 20 and 21 of a voltage detector 7 are received by photodiodes 20b and 21b, whose voltage signals are sent to a multiplier 9. According to the variation of the consumption of a current (i), the intensity H of a magnetic field established by the magnetic cor 26 of a current detector 8 varies, and resistance values 28a and 28b of a magnetic resistance element 28 vary correspondingly and are converted into electric signals, which are sent from an amplifier 29 to the multiplier 9. The result of the multiplier 9 is temperature calibrated by the output voltage signal VT of a temperature converter 10 proportional to the temperature T of a temperature sensor 11 to eliminate nonlinear characteristics and temperature fluctuation characteristics, thereby making a digital signal, having electric power information, linear. It is counted by a counter to measure electric energy precisely by a small-sized and lightweight device.
JP10227580A 1980-07-25 1980-07-25 Electronic watt-hour meter Pending JPS5726761A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10227580A JPS5726761A (en) 1980-07-25 1980-07-25 Electronic watt-hour meter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10227580A JPS5726761A (en) 1980-07-25 1980-07-25 Electronic watt-hour meter

Publications (1)

Publication Number Publication Date
JPS5726761A true JPS5726761A (en) 1982-02-12

Family

ID=14323045

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10227580A Pending JPS5726761A (en) 1980-07-25 1980-07-25 Electronic watt-hour meter

Country Status (1)

Country Link
JP (1) JPS5726761A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007039780A1 (en) * 2005-10-05 2007-04-12 Antal Gasparics Electric meter supplied with control device
WO2012105049A1 (en) 2011-02-04 2012-08-09 富士通株式会社 Power strip and power measurement method
EP2672577A4 (en) * 2011-02-04 2016-12-28 Fujitsu Ltd Power strip and power measurement method
CN110927657A (en) * 2019-12-20 2020-03-27 深圳供电局有限公司 Electric energy meter error correction method, device and equipment

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007039780A1 (en) * 2005-10-05 2007-04-12 Antal Gasparics Electric meter supplied with control device
WO2012105049A1 (en) 2011-02-04 2012-08-09 富士通株式会社 Power strip and power measurement method
US20130317770A1 (en) * 2011-02-04 2013-11-28 Fujitsu Component Limited Power strip and power measurement method
US9316672B2 (en) 2011-02-04 2016-04-19 Fujitsu Limited Power strip and power measurement method
EP2672577A4 (en) * 2011-02-04 2016-12-28 Fujitsu Ltd Power strip and power measurement method
EP2672279A4 (en) * 2011-02-04 2016-12-28 Fujitsu Ltd Power strip and power measurement method
CN110927657A (en) * 2019-12-20 2020-03-27 深圳供电局有限公司 Electric energy meter error correction method, device and equipment

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