Fotopletismografia apparatus, method for operating a fotopletismografia apparatus and computer program for operating a device for fotopletismografia

摘要

The invention relates to a device for fotopletismografia (100).Which comprises a light source (110) configured to provide light source (130) of at least a first and a second position directed to a fabric (140); and a light detector (120) configuredTo detect light source and to provide at least a first and a second sensor signals (127),29) indicative of the source light scattered from the first and second spectral positions; and a processing unit (150).The processing unit is configured to calculate a corrected signal sensor (160), indicative of a variation in the absorbance of blood within the tissue.For the removal of a component of the error signal of trajectory in the tissue, indicative of a variation in the length of the optical path through the tissue over time.And a component of the error signal coupling of light, indicative of a variation in the intensity of light from the source of light source emitted in the fabric, at least first and second signals from the sensor.