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  • This paper presents a weak magnetic field measurement system using micro-fluxgate (FG) sensors and a sensor signal processing technique using the delta-sigma modulation in the negative feedback loop. The feedback of the lowpass filtered bitstream output of a delta-sigma modulator to the magnetic field improves system linearity, hysteresis, and stability. In spite of the fact that the second-order delta-sigma modulator is used, the third-order noise shaping can be obtained in the digital output bit-stream by the use of an integrator in the loop. This improves the SNR of the digital output. The measured noise of the implemented system meets the measured noise of the FG sensing element itself. The weak magnetic field in the range of the Earth's magnetic field is successfully measured. The nonlinearity error is less then 0.4 % in the range of +/- 100 uT.
  • This paper presents a weak magnetic field measurement system using micro-fluxgate (FG) sensors and a sensor signal processing technique using the delta-sigma modulation in the negative feedback loop. The feedback of the lowpass filtered bitstream output of a delta-sigma modulator to the magnetic field improves system linearity, hysteresis, and stability. In spite of the fact that the second-order delta-sigma modulator is used, the third-order noise shaping can be obtained in the digital output bit-stream by the use of an integrator in the loop. This improves the SNR of the digital output. The measured noise of the implemented system meets the measured noise of the FG sensing element itself. The weak magnetic field in the range of the Earth's magnetic field is successfully measured. The nonlinearity error is less then 0.4 % in the range of +/- 100 uT. (en)
Title
  • A Weak Magnetic Field Measurement System Using Micro-Fluxgate Sensors and Delta-Sigma Interface
  • A Weak Magnetic Field Measurement System Using Micro-Fluxgate Sensors and Delta-Sigma Interface (en)
skos:prefLabel
  • A Weak Magnetic Field Measurement System Using Micro-Fluxgate Sensors and Delta-Sigma Interface
  • A Weak Magnetic Field Measurement System Using Micro-Fluxgate Sensors and Delta-Sigma Interface (en)
skos:notation
  • RIV/68407700:21230/03:03087195!RIV/2004/MSM/212304/N
http://linked.open.../vavai/riv/strany
  • 103 ; 110
http://linked.open...avai/riv/aktivita
http://linked.open...avai/riv/aktivity
  • Z(MSM 212300016)
http://linked.open...iv/cisloPeriodika
  • 1
http://linked.open...vai/riv/dodaniDat
http://linked.open...aciTvurceVysledku
http://linked.open.../riv/druhVysledku
http://linked.open...iv/duvernostUdaju
http://linked.open...titaPredkladatele
http://linked.open...dnocenehoVysledku
  • 597227
http://linked.open...ai/riv/idVysledku
  • RIV/68407700:21230/03:03087195
http://linked.open...riv/jazykVysledku
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  • Delta-sigma modulation;fluxgate (FG) sensors;magnetometers;sensor interface (en)
http://linked.open.../riv/klicoveSlovo
http://linked.open...odStatuVydavatele
  • US - Spojené státy americké
http://linked.open...ontrolniKodProRIV
  • [1AF7073CA273]
http://linked.open...i/riv/nazevZdroje
  • IEEE Transactions on Instrumentation and Measurement
http://linked.open...in/vavai/riv/obor
http://linked.open...ichTvurcuVysledku
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http://linked.open...UplatneniVysledku
http://linked.open...v/svazekPeriodika
  • 52
http://linked.open...iv/tvurceVysledku
  • Kawahito, S.
  • Cerman, Aleš
  • Aramaki, K.
  • Tadokoro, Y.
http://linked.open...n/vavai/riv/zamer
issn
  • 0018-9456
number of pages
http://localhost/t...ganizacniJednotka
  • 21230
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