Wristband biosensing system, wristband biosensing apparatus and biosensing method

A biosensing method, adapted to a biosensing apparatus worn on a wrist of a user, the biosensing apparatus comprising at least one physiological signal sensor, at least one deformation sensor, and a processing device, each of the at least one deformation sensor comprising a plurality of wires connected in parallel and a bottom electrode, the plurality of wires being respectively spaced apart from the bottom electrode by a gap in different directions, the biosensing method comprising:

• respectively detecting a physiological signal of at least one sensing portion of the wrist by using the at least one physiological signal sensor by the processing device;
• detecting deformation of each of the at least one sensing portion by detecting a plurality of capacitance value variations of a plurality of capacitance values between the plurality of wires and the bottom electrode along with deformation of each of the at least one sensing portion and generating a deformation signal according to the plurality of capacitance value variations, and inquiring a compensation signal corresponding to the deformation signal by the processing device;
• and
• correcting the physiological signal by using the compensation signal by the processing device, so as to output a corrected physiological signal of each of the at least one sensing portion.

A wristband biosensing apparatus, comprising:

• a connection device, connected to a host;
• a wristband body, worn on a wrist of a user;
• at least one physiological signal sensor, disposed on the wristband body at a position corresponding to at least one sensing portion of the wrist, and configured to detect a physiological signal of each of the at least one sensing portion;
• at least one deformation sensor, disposed around each of the at least one physiological signal sensor, and configured to detect deformation of each of the at least one sensing portion and output a deformation signal;
• and
• a processing device, coupled to the at least one physiological signal sensor and the at least one deformation sensor, and configured to receive the physiological signal and the deformation signal, inquire a compensation signal corresponding to the deformation signal, and correct the physiological signal by using the compensation signal, so as to output a corrected physiological signal of each of the at least one sensing portion to the host,
• wherein each of the at least one deformation sensor comprises a plurality of wires connected in parallel and a bottom electrode, the plurality of wires are respectively spaced apart from the bottom electrode by a gap in different directions, so as to generate a plurality of capacitance values between the plurality of wires and the bottom electrode, and the plurality of capacitance values generate a plurality of capacitance value variations along with deformation of each of the at least one sensing portion, wherein each of the at least one deformation sensor generates the deformation signal according to the plurality of capacitance value variations.