Presentation Information
[16a-PA6-4]Simultaneous Measurement of Dynamic and Static Strain Using Integrated Piezoelectric–Piezoresistive Sensor
〇(B)Makoto Hirose1, Junei Kobayashi1, Takashi Nakajima1 (1.Tokyo Univ. of Sci.)
Keywords:
piezoelectric effect,piezoresistive effect
Human body movements generate both static loads and micro-vibrations simultaneously, but simultaneous measurement is difficult with single-mechanism sensors. Therefore, we constructed a mechanism capable of simultaneously measuring the piezoelectric effect and the piezoresistive effect within a single device by using a piezoresistive element (CNT-PDMS composite material) as the electrode for the piezoelectric element (PVDF). Furthermore, to suppress crosstalk between the two effects, we designed a measurement circuit incorporating a dummy capacitor and a differential amplifier, demonstrating the ability to independently acquire both effects.