Sensor device and method for measuring and determining a pulse arrival time (pat) value

A sensor device for measuring and determining a pulse arrival time (PAT) value of a user comprising a photoplethysmographic (PPG) multichannel sensor formed from a plurality of PPG sensor channels and being adapted to measure a set of PPG signals, each PPG signal being measured by one of the PPG sensor channels when the multichannel PPG sensor is in contact with the user, wherein the PAT value is determined using a method comprising:

• measuring said set of PPG signals;
• extracting a plurality of features from each of the measured PPG signals;
• selecting a subset from the set of PPG signals based on the extracted features;
• and
• processing the selected subset of PPG signals to determine the PAT value.

Computer carrier comprising program code portions to be executed by a signal processing device in order to carry out a method for measuring and determining a pulse arrival time (PAT) value of a user using a sensor device comprising a photoplethysmographic (PPG) multichannel sensor formed from a plurality of PPG sensor channels and being adapted to measure a set of PPG signals, each PPG signal being measured by one of the PPG sensor channels when the multichannel PPG sensor is in contact with the user;

• the method comprising:
• measuring said set of PPG signals;
• extracting a plurality of features from each of the measured PPG signals;
• selecting a subset from the set of PPG signals based on the extracted features;
• and
• processing the selected subset of PPG signals to determine the PAT value;
• when said program is executed by said signal processing device.