Flux Guide Reset Mechanism for Magnetoresistive Sensor Power Optimization

The flux guide reset mechanism is divided into multiple independent coils (first coil and second coil) positioned at opposite sides of the flux guide. Each coil can be independently controlled and optimized, allowing the system to achieve the required reset effect while distributing and reducing the current burden on individual coils, thereby lowering overall power consumption.

The coil segments are strategically positioned to overlap with specific portions of the flux guide where magnetization reset is most needed. The first coil segments overlap with a first portion of the flux guide and the second coil segments overlap with a second portion, creating localized magnetic fields that efficiently reset magnetization where required rather than applying uniform fields across the entire flux guide, thus reducing power consumption.

The reset mechanism uses segmented coils (first coil with first coil segments and second coil with second coil segments) rather than a single large coil. This segmentation allows each coil to generate smaller, more efficient magnetic fields that collectively achieve the required reset effect, reducing the voltage overhead compared to traditional single-coil designs.

The patent optimizes the geometric parameters of the coil segments (size, spacing, orientation) to maximize magnetic field efficiency. By carefully designing the coil segment dimensions and their overlap with the flux guide portions, the system achieves effective magnetization reset at lower voltage levels, making it suitable for mobile applications with limited power budgets.