A weak magnetic field measurement system using micro-fluxgate sensors and delta~sigma interface

S. Kawahito,A. Cerman, K. Aramaki,Y. Tadokoro

IEEE Transactions on Instrumentation and Measurement（2003）

引用 27|浏览1

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摘要

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 ...

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关键词

Magnetic field measurement,Magnetic sensors,Sensor systems,Noise shaping,Delta modulation,Noise measurement,Magnetic noise,Signal processing,Delta-sigma modulation,Negative feedback loops

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