JP2019152481A5 - - Google Patents

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Publication number
JP2019152481A5
JP2019152481A5 JP2018036472A JP2018036472A JP2019152481A5 JP 2019152481 A5 JP2019152481 A5 JP 2019152481A5 JP 2018036472 A JP2018036472 A JP 2018036472A JP 2018036472 A JP2018036472 A JP 2018036472A JP 2019152481 A5 JP2019152481 A5 JP 2019152481A5
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JP
Japan
Prior art keywords
magnetic sensors
triaxial magnetic
measuring device
conductor
distance
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JP2018036472A
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Japanese (ja)
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JP2019152481A (en
JP7155541B2 (en
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Publication date
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Priority claimed from JP2018036472A external-priority patent/JP7155541B2/en
Priority to JP2018036472A priority Critical patent/JP7155541B2/en
Priority to PCT/JP2019/004009 priority patent/WO2019167565A1/en
Priority to EP22195147.8A priority patent/EP4130757B1/en
Priority to KR1020207024038A priority patent/KR102412180B1/en
Priority to EP19760523.1A priority patent/EP3761044A4/en
Priority to CN201980015287.6A priority patent/CN111771128B/en
Priority to US16/971,927 priority patent/US11360124B2/en
Publication of JP2019152481A publication Critical patent/JP2019152481A/en
Publication of JP2019152481A5 publication Critical patent/JP2019152481A5/ja
Publication of JP7155541B2 publication Critical patent/JP7155541B2/en
Application granted granted Critical
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Claims (5)

被測定導体に流れる電流を測定する電流測定装置であって、
各々の感磁方向が互いに平行になるように、予め規定された間隔をもって配置された２つの三軸磁気センサと、
前記２つの三軸磁気センサの検出結果と前記２つの三軸磁気センサの間隔とに基づいて、前記被測定導体に流れる電流を求める演算部と、
を備え、
前記演算部は、前記２つの三軸磁気センサの検出結果と前記２つの三軸磁気センサの間隔とに基づいて、前記被測定導体に対する前記２つの三軸磁気センサの何れか一方の距離を推定する距離推定部と、
前記距離推定部によって推定された距離と、前記２つの三軸磁気センサの何れか一方の検出結果とに基づいて、前記被測定導体に流れる電流を求める電流算出部と、
を備える電流測定装置。 A current measuring device that measures the current flowing through the conductor to be measured.
Two triaxial magnetic sensors arranged at predetermined intervals so that their magnetic sensing directions are parallel to each other.
A calculation unit that obtains the current flowing through the conductor to be measured based on the detection results of the two triaxial magnetic sensors and the distance between the two triaxial magnetic sensors.
Equipped with a,
The calculation unit estimates the distance of either one of the two triaxial magnetic sensors to the conductor to be measured based on the detection result of the two triaxial magnetic sensors and the distance between the two triaxial magnetic sensors. Distance estimation unit and
A current calculation unit that obtains the current flowing through the conductor to be measured based on the distance estimated by the distance estimation unit and the detection result of either one of the two triaxial magnetic sensors.
Ru comprising a current measuring device. 前記演算部は、前記２つの三軸磁気センサの検出結果に含まれる雑音成分を除去する雑音除去部を更に備えており、
前記雑音除去部によって雑音成分が除去された前記２つの三軸磁気センサの検出結果を用いて前記被測定導体に流れる電流を求める、
請求項１記載の電流測定装置。 The calculation unit further includes a noise removal unit that removes noise components included in the detection results of the two triaxial magnetic sensors.
The current flowing through the conductor to be measured is obtained by using the detection results of the two triaxial magnetic sensors whose noise components have been removed by the noise removing unit.
The current measuring device according to claim 1. 前記雑音除去部は、予め規定された一定の期間毎に得られる、前記２つの三軸磁気センサの検出結果の各々に対し、平均化処理又は二乗和平方根処理を個別に行うことで、前記２つの三軸磁気センサの検出結果に含まれる雑音成分をそれぞれ除去する、請求項２記載の電流測定装置。 The noise removing unit individually performs averaging processing or square sum square root processing on each of the detection results of the two triaxial magnetic sensors obtained at predetermined fixed period intervals, thereby performing the above 2 The current measuring device according to claim 2 , wherein each of the noise components included in the detection results of the three triaxial magnetic sensors is removed. 前記２つの三軸磁気センサを備えるセンサヘッドと、
前記演算部を備える回路部と、
を備える請求項１から請求項３の何れか一項に記載の電流測定装置。 A sensor head including the two three-axis magnetic sensors and
A circuit unit including the calculation unit and
The current measuring device according to any one of claims 1 to 3. 前記２つの三軸磁気センサの検出結果を示す信号は、ディジタル信号である、請求項１から請求項４の何れか一項に記載の電流測定装置。 The current measuring device according to any one of claims 1 to 4 , wherein the signal indicating the detection result of the two triaxial magnetic sensors is a digital signal.
JP2018036472A 2018-03-01 2018-03-01 Current measuring device Active JP7155541B2 (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
JP2018036472A JP7155541B2 (en) 2018-03-01 2018-03-01 Current measuring device
EP19760523.1A EP3761044A4 (en) 2018-03-01 2019-02-05 Electric current measuring device, electric current measuring method, and computer-readable non-transitory recording medium
EP22195147.8A EP4130757B1 (en) 2018-03-01 2019-02-05 Current measuring device, current measuring method, and non-transitory computer-readable storage medium
KR1020207024038A KR102412180B1 (en) 2018-03-01 2019-02-05 Current measuring device, current measuring method, and computer-readable non-transitory recording medium
PCT/JP2019/004009 WO2019167565A1 (en) 2018-03-01 2019-02-05 Electric current measuring device, electric current measuring method, and computer-readable non-transitory recording medium
CN201980015287.6A CN111771128B (en) 2018-03-01 2019-02-05 Current measuring device, current measuring method, and computer-readable non-transitory recording medium
US16/971,927 US11360124B2 (en) 2018-03-01 2019-02-05 Current measuring device, current measuring method, and non-transitory computer-readable storage medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2018036472A JP7155541B2 (en) 2018-03-01 2018-03-01 Current measuring device

Publications (3)

Publication Number Publication Date
JP2019152481A JP2019152481A (en) 2019-09-12
JP2019152481A5 true JP2019152481A5 (en) 2021-04-08
JP7155541B2 JP7155541B2 (en) 2022-10-19

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Family Applications (1)

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JP2018036472A Active JP7155541B2 (en) 2018-03-01 2018-03-01 Current measuring device

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JP (1) JP7155541B2 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7040503B2 (en) * 2019-08-27 2022-03-23 横河電機株式会社 Current measuring device
CN112986648B (en) * 2019-12-12 2023-03-31 嘉兴博感科技有限公司 Long straight conductor current measuring method and system
JP2022029714A (en) * 2020-08-05 2022-02-18 横河電機株式会社 Current measurement device

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5151649A (en) * 1990-01-23 1992-09-29 Paul Heroux Pair of electrically shielded triaxial magnetic sensors for determination of electric currents in conductors in air with distance and angle compensation
JPH07248366A (en) * 1994-03-11 1995-09-26 Shimadzu Corp Magnetic noise compensating method
JP5052006B2 (en) * 2005-12-28 2012-10-17 株式会社日本自動車部品総合研究所 Fuel cell current measurement system and current measurement method
JP2007183221A (en) * 2006-01-10 2007-07-19 Denso Corp Electric current sensor
JP5631560B2 (en) * 2009-06-10 2014-11-26 協立電機株式会社 Current detector
JP5464516B2 (en) * 2009-10-15 2014-04-09 国立大学法人 筑波大学 Detection device and fuel cell system

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