A method for manufacturing a Hall sensor assembly and a Hall sensor assembly

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This invention provides a method for manufacturing a compact Hall sensor assembly capable of accurately detecting all three spatial components (x, y, z) of a magnetic field at a single point. The assembly arranges multiple Hall sensors on non-conducting, non-magnetic supports (such as sapphire or ceramics) so that their sensitive areas are concentrated at the center of a small cube. This unique 3D configuration allows for precise, simultaneous vector magnetic field readings and effectively cancels out undesired planar Hall effects.

Use CasesContent extracted from patent full text and abstract with AI.

• Three-dimensional magnetic field mapping in scientific research facilities, such as particle accelerators or synchrotrons
• Precision position sensors in robotics or industrial automation
• Magnetic resonance imaging (MRI) machine calibration and monitoring
• Beam line magnetic field measurement in medical proton therapy
• Calibrating and mapping complex magnets with non-uniform field distributions
• Quality control or monitoring in manufacturing processes involving magnets or magnetic fields

BenefitsContent extracted from patent full text and abstract with AI.

• Simultaneous, highly accurate measurement of all three magnetic field components at the same spatial point
• Significant reduction of measurement errors, especially those caused by non-uniform magnetic fields
• Substantially cancels out undesired planar Hall effects, increasing measurement reliability
• Miniaturized sensor assembly with high spatial resolution (micrometer-scale active areas)
• Robustness against external interference, thanks to non-magnetic, non-conductive support materials
• Easy calibration and precise positioning due to reference surfaces integrated into the supporting structure

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Patent Abstract

An assembly (2) of Hall sensors (6) provides the advantages : –  the averaged values of all three field components are assigned to the same point in space, at the centre (4) of the Hall sensor (6), thus allowing for instantaneous measurements of the full field vector; –  with the appropriate electrical connections of the Hall elements from opposing surfaces of each pair, the undesired planar Hall effect can be practically cancelled out.