Patent ID: 11903715
Assignee: SONERA MAGNETICS, INC.
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 0:
1. A system for a wearable field sensing device for biological electromagnetic (EM) field measurement comprising:
a wearable structure, comprising a portable cap fitted to a user head;
a biological sensor array,
situated on the portable cap such that a plurality of sensors in the biological sensor array is adjacent to the user head once the portable cap is worn,
spans at least one distinct region of the user head, for field measurements in the at least one distinct region,
the biological sensor array comprising an array of acoustically driven ferromagnetic resonance (ADFMR) sensor units situated on the interior of the wearable structure, an ADFMR sensor unit being an application specific integrated circuit (ASIC) package that comprises at least one ADFMR sensor, excitation circuitry connected as a frequency source to the at least one ADFMR sensor, and ADMR signal processing circuitry,
the biological sensor array comprises at least 100 ADFMR sensors in the at least one distinct region, and

an ambient sensor array, comprising:
a second array of ADFMR sensor units situated on the portable cap configured to measure ambient EM fields in proximity of the portable cap;

sensor shielding, comprising a set of field coils situated on the portable cap and enabled to generate magnetic fields on and around the portable cap;
a power system, comprising a battery electrically coupled to the portable cap; and
control circuitry, electrically coupled to the system,
enabling the system to function in a low power operating mode, comprising operation of a subset of the biological sensor array, and
enabling the system to function in a noise reduction operating mode, wherein the noise reduction operating mode comprises activating the set of field coils to cancel ambient EM fields measured by the ambient sensor array.