Apparatus and method for detecting misalignment between implantable bio sensor and bio-signal receiving module

A method for detecting, in a bio signal receiving module, misalignment between a bio sensor and the bio signal receiving module, the method comprising:

• transmitting, by the bio signal receiving module, a light signal to the bio sensor;
• determining, by the bio signal receiving module, whether a bio signal from the bio sensor is received in a misalignment detection section;
• and
• determining, by the bio signal receiving module, that the bio signal receiving module and the bio sensor are misaligned if the bio signal is received in the misalignment detection section.

A bio sensor for detecting misalignment between the bio sensor and a bio signal receiving module, the bio sensor comprising:

• a photovoltaic power source configured to receive a light signal from the bio signal receiving module;
• a detector configured to determine whether the light signal is received in a misalignment detection section, and to determine that the bio sensor and the bio signal receiving module are misaligned if the light signal is received in the misalignment detection section;
• and
• a transmitter configured to generate a feedback signal that comprises information to indicate misalignment between the bio sensor and the bio signal receiving module, and to transmit the feedback signal to the bio signal receiving module.