[7p-A502-1~6] Organic Devices for Sensing to Next Generation of IoT

[7p-A502-3] A New Wearable Sensor in The Shape of A Braided Cord (Kumihimo) Developed by Weaving Piezoelectric Polymer Fiber

〇Yoshiro Tajitsu¹ (1.Kansai Univ.)

Keywords:piezoelectricity, sensor, braided cord

A new piezoelectric sensor was developed in the shape of a Japanese traditional braided cord known as a "Kumihimo", by weaving piezoelectric poly-l-lactic acid (PLLA) fibers (piezoelectric PLLA braided cord). We then developed a system for measuring pulse waves with a Wi-Fi communication system using a piezoelectric PLLA braided cord with decorative knots. In fact, we realized that the piezoelectric braiding cord tied in various decorative knots, which can be worn as an accessory such as a choker or necklace, could detect pulse waves, swallowing, and coughing in a systematic order in one's daily life.