CN101900587A - Constant mean value excitation current source of electromagnetic flowmeter - Google Patents
Constant mean value excitation current source of electromagnetic flowmeter Download PDFInfo
- Publication number
- CN101900587A CN101900587A CN2009100721343A CN200910072134A CN101900587A CN 101900587 A CN101900587 A CN 101900587A CN 2009100721343 A CN2009100721343 A CN 2009100721343A CN 200910072134 A CN200910072134 A CN 200910072134A CN 101900587 A CN101900587 A CN 101900587A
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- circuit
- current source
- electromagnetic flowmeter
- mean value
- excitation current
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- 230000005284 excitation Effects 0.000 title claims abstract description 39
- 238000001914 filtration Methods 0.000 claims abstract description 17
- 239000003990 capacitor Substances 0.000 claims description 6
- 230000001131 transforming effect Effects 0.000 claims description 6
- 230000003750 conditioning effect Effects 0.000 abstract description 5
- 238000005070 sampling Methods 0.000 abstract description 5
- 230000009466 transformation Effects 0.000 abstract description 3
- 230000002964 excitative effect Effects 0.000 description 4
- 230000006641 stabilisation Effects 0.000 description 3
- 238000011105 stabilization Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000010354 integration Effects 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
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Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN2009100721343A CN101900587B (en) | 2009-05-26 | 2009-05-26 | Constant mean value excitation current source of electromagnetic flowmeter |
Applications Claiming Priority (1)
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CN2009100721343A CN101900587B (en) | 2009-05-26 | 2009-05-26 | Constant mean value excitation current source of electromagnetic flowmeter |
Publications (2)
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CN101900587A true CN101900587A (en) | 2010-12-01 |
CN101900587B CN101900587B (en) | 2012-08-08 |
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Family Applications (1)
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CN2009100721343A Expired - Fee Related CN101900587B (en) | 2009-05-26 | 2009-05-26 | Constant mean value excitation current source of electromagnetic flowmeter |
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CN (1) | CN101900587B (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104048711A (en) * | 2014-07-04 | 2014-09-17 | 威海市天罡仪表股份有限公司 | Electromagnetic field multi-level strength switching circuit and electromagnetic field multi-level strength switching calculation method |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3635878A1 (en) * | 1986-10-22 | 1988-05-05 | Philips Patentverwaltung | Voltage-controlled current source |
CN2114190U (en) * | 1992-01-09 | 1992-08-26 | 王刚 | Constant-current integrated power supply device |
CN1036160C (en) * | 1993-12-13 | 1997-10-15 | 朱林盛 | DC regulated power supply of self-generating auxiliary voltage type |
CN201118449Y (en) * | 2007-11-27 | 2008-09-17 | 中国航天科技集团公司第五研究院第五○二研究所 | Converter with current balance function |
CN201548272U (en) * | 2009-05-26 | 2010-08-11 | 哈尔滨理工大学 | Current source for electromagnetic flow meter |
-
2009
- 2009-05-26 CN CN2009100721343A patent/CN101900587B/en not_active Expired - Fee Related
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104048711A (en) * | 2014-07-04 | 2014-09-17 | 威海市天罡仪表股份有限公司 | Electromagnetic field multi-level strength switching circuit and electromagnetic field multi-level strength switching calculation method |
CN104048711B (en) * | 2014-07-04 | 2017-07-18 | 威海市天罡仪表股份有限公司 | Electromagnetic field multi-level intensity switching circuit and its switching computational methods |
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Publication number | Publication date |
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CN101900587B (en) | 2012-08-08 |
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Legal Events
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C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
ASS | Succession or assignment of patent right |
Owner name: STATE ELECTRIC NET CROP. Free format text: FORMER OWNER: HARBIN SCIENCE AND ENGINEERING UNIV. Effective date: 20131125 Owner name: MAINTENANCE COMPANY, STATE GRID HEILONGJIANG ELECT Effective date: 20131125 |
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C41 | Transfer of patent application or patent right or utility model | ||
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Free format text: CORRECT: ADDRESS; FROM: 150040 HARBIN, HEILONGJIANG PROVINCE TO: 100031 XICHENG, BEIJING |
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TR01 | Transfer of patent right |
Effective date of registration: 20131125 Address after: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing Patentee after: State Grid Corporation of China Patentee after: Maintenance Company of State Grid Heilongjiang Electric Power Company Address before: 150040 No. 52, Xuefu Road, Nangang District, Heilongjiang, Harbin Patentee before: Harbin University of Science and Technology Effective date of registration: 20131125 Address after: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing Patentee after: State Grid Corporation of China Patentee after: Maintenance Company of State Grid Heilongjiang Electric Power Company Address before: 150040 No. 52, Xuefu Road, Nangang District, Heilongjiang, Harbin Patentee before: Harbin University of Science and Technology |
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CF01 | Termination of patent right due to non-payment of annual fee | ||
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120808 Termination date: 20190526 |