Segmented Flux Concentrator for Current Sensor Stray Field Rejection

The patent divides the magnetic flux concentrator into multiple segments arranged in a specific pattern (e.g., U-shapes, C-shapes, or other geometric configurations) rather than using a complete circular ring. This segmentation reduces the total amount of magnetic material needed while maintaining the flux concentration effect, thereby improving sensitivity without requiring a full circular structure.

The patent places magnetic flux concentrator segments at specific locations around the conductor where they most effectively concentrate magnetic flux toward the sensing element. Rather than uniformly distributing material around the entire circle, the design optimizes local placements to achieve maximum flux concentration with minimum material, reducing device complexity while maintaining measurement precision.

By segmenting the flux concentrator into discrete geometric shapes that can be independently manufactured and positioned, the patent reduces manufacturing complexity and material costs. The segmented design allows for simpler fabrication processes compared to creating a complete circular ring structure.

The patent employs magnetic flux concentrator segments made from cost-effective magnetic materials in simplified geometric configurations. These segmented structures use less material than a complete circular concentrator, directly reducing manufacturing costs while maintaining the necessary signal-to-noise ratio through optimized flux concentration at critical locations.

The segmented flux concentrator design provides the necessary magnetic flux concentration to achieve adequate sensitivity, but in a simplified form that reduces device complexity compared to a complete circular structure. The segments are strategically positioned to concentrate flux where needed without requiring a full环形 configuration.

The patent employs magnetic flux concentrator segments with specific geometric configurations (such as U-shapes or C-shapes) that create effective flux concentration pathways. These geometric designs concentrate magnetic flux in three-dimensional space around the conductor, achieving the necessary sensitivity enhancement without requiring a complete circular ring structure.

The patent positions magnetic flux concentrator segments at specific locations where they can concentrate the magnetic flux generated by the sensed current while being less effective at concentrating stray external magnetic fields. This selective placement creates local flux concentration zones that enhance sensitivity to the target current while naturally providing some rejection of external interference.

The segmented flux concentrator design often employs asymmetric geometric configurations (such as U-shapes or C-shapes oriented in specific directions) that are optimized to concentrate flux from the sensed current. This asymmetric arrangement provides directional sensitivity enhancement for the target current while being less effective at concentrating magnetic flux from external stray fields approaching from other directions.