Fotopletysmografie s využitím zeleného světla

Abstract

This thesis deals with the realization of pulse measurment device using a sensor, that is located on the head and on the finger of an upper limb with the use of plethysmographic photoelectric reflexive sensor. The sensor is realized by the usage of green LED diode with a wave length of 527 nm and a photodiode. The recorded pulse wave is then processed and evaluated. A real-time projection of the signal is monitored in a LabQuest2 portable device. Offline analysis of the signal runs in Matlab software, into which the text file with a data of the LabQuest2 is put in. The signal analysis mainly contains of peak detection of the pulse wave and the follow-up heartbeat curve display. Therefore, a GUI, showing both of the curves, pulse curve and heartbeat curve, is created. The device is tested on 11 probands for the purposes of the measurement.