Ring-Shaped Detection Device Wireless Charging

The patent implements wireless charging capability that allows the battery to be charged with power while the device remains worn on the living body. The wireless power receiving element enables continuous power transfer through electromagnetic coupling with a power supply device, eliminating the need to remove the device for charging. This maintains continuous data collection functionality while simultaneously charging the battery, thus achieving continuity of useful action for both power supply and data collection operations

The wireless charging system enables continuous power transfer over an extended period while the device is worn. Unlike short-term contact charging, the electromagnetic coupling allows power to be continuously received throughout the wearing period, accumulating sufficient charge in the battery without requiring prolonged stationary contact with a power source. This resolves the contradiction by maintaining both wearing convenience and adequate battery charging through sustained wireless power transfer

The patent positions the coil of the wireless power receiving element in the radial direction of the ring-shaped housing, outside the optical sensor in the radial direction. This spatial arrangement in the radial dimension allows the optical sensor to maintain its optimal positioning facing the light source for accurate optical detection, while the coil is arranged in the same radial plane but at a different radial position. This dimensional separation resolves the spatial conflict between optical detection requirements and power receiving coil arrangement