JP2000241458A5 - - Google Patents
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- JP2000241458A5 JP2000241458A5 JP1999047347A JP4734799A JP2000241458A5 JP 2000241458 A5 JP2000241458 A5 JP 2000241458A5 JP 1999047347 A JP1999047347 A JP 1999047347A JP 4734799 A JP4734799 A JP 4734799A JP 2000241458 A5 JP2000241458 A5 JP 2000241458A5
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- time interval
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Description
【特許請求の範囲】
【請求項１】 定期的に得られた複数の瞬間電流値から第１の時間間隔毎に交流電流の実効値を算出する手段と、
それらの実効値の平均値を第２の時間間隔毎に求めて記録する第１の記録手段と、
それらの実効値の最大値を第３の時間間隔毎に求めて記録する第２の記録手段とを有する電流測定装置。
【請求項２】 請求項１において、前記第１の時間間隔は測定対象の交流電流の周期の正数倍であることを特徴とする電流測定装置。
【請求項３】 請求項２において、前記第１の時間間隔は１００ｍｓｅｃであることを特徴とする電流測定装置。
【請求項４】 請求項１において、前記第１の記録手段は前記第２の時間間隔毎に求められた平均値を順番に記録し、
前記第２の記録手段は、前記第３の時間間隔毎に求められた最大値が所定の検出レベル以上のときに、その最大値および時刻を記録することを特徴とする電流測定装置。
【請求項５】 定期的に得られた複数の瞬間電流値から第１の時間間隔毎に交流電流の実効値を算出する工程と、
それらの実効値の平均値を第２の時間間隔毎に求めて記録する第１の記録工程と、
それらの実効値の最大値を第３の時間間隔毎に求めて記録する第２の記録工程とを有する電流測定方法。
【請求項６】 請求項５において、前記第１の時間間隔は測定対象の交流電流の周期の正数倍であることを特徴とする電流測定方法。
【請求項７】 請求項６において、前記第１の時間間隔は１００ｍｓｅｃであることを特徴とする電流測定方法。
【請求項８】 請求項５において、前記第１の記録工程では前記第２の時間間隔毎に求められた平均値を順番に記録し、
前記第２の記録工程では、前記第３の時間間隔毎に求められた最大値が所定の検出レベル以上のときに、その最大値および時刻を記録することを特徴とする電流測定方法。
【請求項９】 定期的に得られた複数の瞬間電流値から第１の時間間隔毎に交流電流の実効値を算出する手段を有し、
前記第１の時間間隔は測定対象の交流電流の周期の正数倍であることを特徴とする電流測定装置。
【請求項１０】 請求項９において、前記第１の時間間隔は１００ｍｓｅｃであることを特徴とする電流測定装置。
【請求項１１】 請求項９または１０において、前記実効値の平均値を第２の時間間隔毎に求めて記録する第１の記録手段を有する電流測定装置。
【請求項１２】 定期的に得られた複数の瞬間電流値から第１の時間間隔毎に交流電流の実効値を算出する工程を有し、前記第１の時間間隔は測定対象の交流電流の周期の正数倍であることを特徴とする電流測定方法。
【請求項１３】 請求項１２において、前記第１の時間間隔は１００ｍｓｅｃであることを特徴とする電流測定方法。
【請求項１４】 請求項１２または１３において、前記実効値の平均値を第２の時間間隔毎に求めて記録する第１の記録工程を有する電流測定方法。
[Claims]
1. A means for calculating an effective value of an alternating current for each first time interval from a plurality of instantaneous current values obtained periodically.
A first recording means for obtaining and recording the average value of these effective values at each second time interval, and
A current measuring device including a second recording means for obtaining and recording the maximum value of those effective values at each third time interval.
2. The current measuring device according to claim 1, wherein the first time interval is a positive multiple of the cycle of the alternating current to be measured.
3. The current measuring device according to claim 2, wherein the first time interval is 100 msec.
4. In claim 1, the first recording means sequentially records the average value obtained for each of the second time intervals.
The second recording means is a current measuring device that records the maximum value and the time when the maximum value obtained for each of the third time intervals is equal to or higher than a predetermined detection level.
5. A step of calculating an effective value of an alternating current for each first time interval from a plurality of instantaneous current values obtained periodically.
The first recording step of obtaining and recording the average value of those effective values at each second time interval, and
A current measuring method including a second recording step of obtaining and recording the maximum value of these effective values at each third time interval.
6. The current measuring method according to claim 5, wherein the first time interval is a positive multiple of the cycle of the alternating current to be measured.
7. The current measuring method according to claim 6, wherein the first time interval is 100 msec.
8. In claim 5, in the first recording step, the average values obtained for each of the second time intervals are sequentially recorded.
In the second recording step, when the maximum value obtained for each of the third time intervals is equal to or higher than a predetermined detection level, the maximum value and the time are recorded.
9. A means for calculating an effective value of an alternating current for each first time interval from a plurality of instantaneous current values obtained periodically.
The current measuring device, wherein the first time interval is a positive multiple of the cycle of the alternating current to be measured.
10. The current measuring device according to claim 9, wherein the first time interval is 100 msec.
11. The current measuring device according to claim 9 or 10, further comprising a first recording means for obtaining and recording the average value of the effective values at each second time interval.
12. A step of calculating an effective value of an alternating current for each first time interval from a plurality of instantaneous current values obtained periodically, and the first time interval is the alternating current to be measured. A current measuring method characterized by being a positive multiple of the period.
13. The current measuring method according to claim 12, wherein the first time interval is 100 msec.
14. The current measuring method according to claim 12, wherein the current measuring method includes a first recording step of obtaining and recording the average value of the effective values at each second time interval.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP04734799A JP4384281B2 (en) | 1999-02-25 | 1999-02-25 | Current measuring apparatus and current measuring method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP04734799A JP4384281B2 (en) | 1999-02-25 | 1999-02-25 | Current measuring apparatus and current measuring method |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2009192676A Division JP2009276354A (en) | 2009-08-24 | 2009-08-24 | Current-measuring device and current measurement method |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JP2000241458A JP2000241458A (en) | 2000-09-08 |
| JP2000241458A5 true JP2000241458A5 (en) | 2006-04-13 |
| JP4384281B2 JP4384281B2 (en) | 2009-12-16 |
Family
ID=12772632
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP04734799A Expired - Lifetime JP4384281B2 (en) | 1999-02-25 | 1999-02-25 | Current measuring apparatus and current measuring method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4384281B2 (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100451480B1 (en) * | 2002-06-28 | 2004-10-08 | 주식회사 서미트 | Clamp type current mesuring apparatus capable of measuring ac and dc current |
| JP2007263663A (en) * | 2006-03-28 | 2007-10-11 | Chugoku Electric Power Co Inc:The | Electric leakage detector |
| JP2010017041A (en) * | 2008-07-06 | 2010-01-21 | Kyokko Denki Kk | Power supply apparatus |
| JP5507669B2 (en) * | 2010-03-30 | 2014-05-28 | 三洋電機株式会社 | Power supply system, power supply method, and control program for power supply system |
| JP5666935B2 (en) * | 2011-02-07 | 2015-02-12 | 河村電器産業株式会社 | Current measuring device |
| CN111812433B (en) * | 2020-06-24 | 2022-08-05 | 清科优能(深圳)技术有限公司 | Safety event wave recording method, equipment and system |
| JP7440434B2 (en) | 2021-01-15 | 2024-02-28 | 株式会社鷺宮製作所 | Track circuit monitoring device |
| JP7522053B2 (en) | 2021-01-15 | 2024-07-24 | 株式会社鷺宮製作所 | Traffic light monitoring device |
| JP7538726B2 (en) | 2021-01-15 | 2024-08-22 | 株式会社鷺宮製作所 | Track Circuit Monitoring Device |
-
1999
- 1999-02-25 JP JP04734799A patent/JP4384281B2/en not_active Expired - Lifetime
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