No touch pulse measurement by laser triangulation

Jih Huah Wu, Rong Seng Chang

Research output: Contribution to journalConference articlepeer-review

1 Scopus citations


This paper presents a non-invasive, non-contact measurement of pulse waveforms by applying optical triangulation technology on skin surface vibration. The arterial pulsation information can be obtained with this measurement system. An algorithm to evaluate the pulsing activities from center of laser spot intensity on a certain wrist point has been conducted by fast Fourier Transform (FFT). The amplitude and frequency of skin vibration can be known by this measurement system. The advantages of this optical triangulation method are non-contact, low cost, remote sensing, and it can be combined with image processing system.

Original languageEnglish
Article number87
Pages (from-to)383-390
Number of pages8
JournalProgress in Biomedical Optics and Imaging - Proceedings of SPIE
StatePublished - 2005
EventPhotonic Therapeutics and Diagnostics - San Jose, CA, United States
Duration: 22 Jan 200525 Jan 2005


  • Arterial pulsation
  • Optical triangulation
  • Pulse frequency


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