DE10337984A1 - Active magnetic field compensation, e.g. for use in measurement of biomagnetic signals, whereby both measurement and reference sensors are used and the reference signals used to determine a compensation field - Google Patents

Active magnetic field compensation, e.g. for use in measurement of biomagnetic signals, whereby both measurement and reference sensors are used and the reference signals used to determine a compensation field Download PDF

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Publication number
DE10337984A1
DE10337984A1 DE2003137984 DE10337984A DE10337984A1 DE 10337984 A1 DE10337984 A1 DE 10337984A1 DE 2003137984 DE2003137984 DE 2003137984 DE 10337984 A DE10337984 A DE 10337984A DE 10337984 A1 DE10337984 A1 DE 10337984A1
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DE
Germany
Prior art keywords
measurement
compensation
signals
magnetic field
sensors
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
DE2003137984
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German (de)
Inventor
Rene Schueler
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.)
BIOMED JENA GmbH
Original Assignee
BIOMED JENA GmbH
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 BIOMED JENA GmbH filed Critical BIOMED JENA GmbH
Priority to DE2003137984 priority Critical patent/DE10337984A1/en
Publication of DE10337984A1 publication Critical patent/DE10337984A1/en
Ceased legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
    • G05F7/00—Regulating magnetic variables
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R33/00—Arrangements or instruments for measuring magnetic variables
    • G01R33/02—Measuring direction or magnitude of magnetic fields or magnetic flux
    • G01R33/025—Compensating stray fields

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Automation & Control Theory (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • Measurement And Recording Of Electrical Phenomena And Electrical Characteristics Of The Living Body (AREA)

Abstract

Sensor system for compensation of magnetic fields has at least two magnetic sensors, one or more measurement sensors for the wanted signal and one or more reference sensors for the magnetic field compensation. The magnetic field strength at a measurement location is estimated using a quantity of reference field strengths. Preferably neural networks are used which employ a back-propagation-of-error learning method.
DE2003137984 2003-08-14 2003-08-14 Active magnetic field compensation, e.g. for use in measurement of biomagnetic signals, whereby both measurement and reference sensors are used and the reference signals used to determine a compensation field Ceased DE10337984A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE2003137984 DE10337984A1 (en) 2003-08-14 2003-08-14 Active magnetic field compensation, e.g. for use in measurement of biomagnetic signals, whereby both measurement and reference sensors are used and the reference signals used to determine a compensation field

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2003137984 DE10337984A1 (en) 2003-08-14 2003-08-14 Active magnetic field compensation, e.g. for use in measurement of biomagnetic signals, whereby both measurement and reference sensors are used and the reference signals used to determine a compensation field

Publications (1)

Publication Number Publication Date
DE10337984A1 true DE10337984A1 (en) 2005-03-10

Family

ID=34177679

Family Applications (1)

Application Number Title Priority Date Filing Date
DE2003137984 Ceased DE10337984A1 (en) 2003-08-14 2003-08-14 Active magnetic field compensation, e.g. for use in measurement of biomagnetic signals, whereby both measurement and reference sensors are used and the reference signals used to determine a compensation field

Country Status (1)

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DE (1) DE10337984A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009050618A1 (en) * 2009-10-22 2011-04-28 Biomed Gmbh Method for measuring biomagnetic signals, involves simulating interference transmission behavior of area between locations of reference sensors and measurement location by neuronal network
DE102021210497A1 (en) 2021-09-21 2023-03-23 Siemens Healthcare Gmbh Suppression of magnetic resonance tomographs

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19504670A1 (en) * 1994-03-01 1995-07-13 Siemens Ag System for determining field values of electric or magnetic field distribution
DE19718649A1 (en) * 1997-05-02 1998-11-05 Peter Heiland Device and method for active compensation of magnetic and electromagnetic interference fields

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19504670A1 (en) * 1994-03-01 1995-07-13 Siemens Ag System for determining field values of electric or magnetic field distribution
DE19718649A1 (en) * 1997-05-02 1998-11-05 Peter Heiland Device and method for active compensation of magnetic and electromagnetic interference fields

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009050618A1 (en) * 2009-10-22 2011-04-28 Biomed Gmbh Method for measuring biomagnetic signals, involves simulating interference transmission behavior of area between locations of reference sensors and measurement location by neuronal network
DE102009050618B4 (en) * 2009-10-22 2016-10-06 Biomed Gmbh Measuring method, measuring device and computer program for determining a fault-free measuring signal
DE102021210497A1 (en) 2021-09-21 2023-03-23 Siemens Healthcare Gmbh Suppression of magnetic resonance tomographs

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8131 Rejection