Pulse wave measurement in human using piezoresistive cantilever on liquid

Author

Kaneko, T. ; Minh-Dung, N. ; Quang-Khang, P. ; Takei, Y. ; Takahata, T. ; Matsumoto, K. ; Shimoyama, I.

Author_Institution

Univ. of Tokyo, Tokyo, Japan

fYear

2015

fDate

18-22 Jan. 2015

Firstpage

670

Lastpage

673

Abstract

We propose a device that can measure pulse waves at various points on human body with high sensitivity. Pulse wave velocity was calculated from a synchronized pulse wave measurement on two points. The device had a piezoresistive cantilever placed on silicone oil. The cantilever with oil was embedded in polydimethylsiloxane (PDMS). Pressure waves from arteries can be well conveyed to the cantilever, for the human-skin-like acoustic impedance of the silicone oil and PDMS. The signal to noise ratio of the device was ~80 dB in 10-100 Hz, when excited ~1 μm in displacement.

Keywords

acoustic impedance; blood pressure measurement; blood vessels; cantilevers; piezoresistive devices; polymers; pressure sensors; silicones; skin; PDMS; arteries; frequency 10 Hz to 100 Hz; human body; human-skin-like acoustic impedance; liquid; noise figure 80 dB; piezoresistive cantilever; polydimethylsiloxane; pressure waves; pulse wave velocity; signal to noise ratio; silicone oil; synchronized pulse wave measurement; Acoustics; Arteries; Piezoresistance; Pulse measurements; Sensitivity; Sensors; Temperature measurement;

fLanguage

English

Publisher

ieee

Conference_Titel

Micro Electro Mechanical Systems (MEMS), 2015 28th IEEE International Conference on

Conference_Location

Estoril

Type

conf

DOI

10.1109/MEMSYS.2015.7051046

Filename

7051046