Abstract
Optimization Design and Development of Sensing Coil and Analog Signal Conditioning Electronics for Fluxgate Magnetometer Sensor
Highlights
Fluxgate Magnetometer Sensors (FMS) are commonly used magnetic field sensors for measuring DC or low frequency magnetic field vectors (Lu and Huang, 2015)
The advancements in magnetic materials which form the heart of FMS and characterize their sensitivity, noise level, and linearity range responsible for their popularity among other competitive magnetic field sensors (Can and Topal, 2015)
The conventional approach was based on Part-byPart Optimization (PPO) technique, which includes designing the sensor core first, select the dimension of pick-up coil, and develop a low noise detection circuit
Summary
FMS are commonly used magnetic field sensors for measuring DC or low frequency magnetic field vectors (Lu and Huang, 2015). PPO technique is too slow, time consuming, and expensive (Grosz and Paperno, 2012) Another optimization technique for the magnetometer parameters proposed by Chen et al, (2011) and Grosz et al, (2011) was based on an analytical model, which was numerically solved to obtain improved large set of parameters such as volume and weight of pick-up coil, power consumption, and the noise of the signal conditioning circuit. 2.3 Detection Electronics The pick-up coil of the fluxgate sensor detects the signal induced by the flux collapse (saturation) and flux recovery (de-saturation) of the core magnetizing current (Evans, 2006). This small induced voltage output signal of the pick-up coil was detected and it was compensated by amplifying and filtering the signal. This adds up to the regulated supply voltages of +5 V, ±10 V, and ground
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