Basic experiment of blood-pressure measurement which uses FBG sensors

Needs for vital sign measurement systems have been increasing. Non-invasive and non-restraining systems are required that it can monitor health status over a prolonged period. In this study, we use FGB (Fiber Bragg Grating) sensors. We have devoted significant efforts in developing a vital sign measurement system that can address the above-described problems. Using an FBG sensor, we acquired waveforms of strains from the body surfaces. These waveforms are pulse waves caused by the expansions and contractions of arteries. Systolic blood pressure value was calculated from a waveform of the time difference between the two places. We have confirmed the validity of the principle of systolic blood pressure measurement by FBG sensors.