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Thermal Measurement of Arterial Pulse using Heat Flux Sensors
  • +4
  • Antti Immonen,
  • Ante Pettersson,
  • Saku Levikari,
  • Heikki Peltonen,
  • Heikki Kyröläinen,
  • Pertti Silventoinen,
  • Mikko Kuisma
Antti Immonen

Corresponding Author:[email protected]

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Ante Pettersson
Saku Levikari
Heikki Peltonen
Heikki Kyröläinen
Pertti Silventoinen
Mikko Kuisma


In this paper, the novel concept of using heat flux sensors (HFS) to measure arterial pulse on the skin surface is validated. The heat flux (HF) signal is compared with simultaneously measured electrocardiogram (ECG) and photoplethysmography (PPG) signals during both rest and initial recovery from exercise. It is found that the waveform measured with the HF sensor above the radial artery has similar shape to PPG and demonstrates a clear temporal alignment between the HF pulse waves and both the PPG and ECG signals. Further, it is shown that HF measurement can be used to consistently track the arterial pulse at varying skin-to-ambient temperature gradients.

06 Mar 2024Submitted to TechRxiv
11 Mar 2024Published in TechRxiv