Apparatus and method for measuring bio-information

An apparatus for measuring bio-information, the apparatus comprising:

• a pulse wave sensor comprising at least one pair of light emitters which are disposed apart from each other and a light receiver disposed between the at least one pair of light emitters, the pulse wave sensor being configured to measure a plurality of pulse wave signals from an object by using the light receiver and the at least one pair of light emitters;
• a force distribution sensor configured to measure a contact force distribution of a contact force that is applied to a contact surface of the pulse wave sensor by the object and is distributed along the contact surface of the pulse wave sensor;
• a memory configured to store size information of a mathematical area of the contact surface of the pulse wave sensor, wherein an entire surface of the contact surface is configured to be in contact with the object;
• and
• a processor configured to retrieve the size information of the mathematical area of the contact surface of the pulse wave sensor from the memory;
• generate an integrated pulse wave signal by integrating the plurality of pulse wave signals based on the contact force distribution;
• determine a contact pressure based on the contact force distribution and the mathematical area of the contact surface of the pulse wave sensor;
• and estimate the bio-information of the object based on the integrated pulse wave signal and the contact pressure.