Abstract

This paper presents a wireless sensing system utilizing ultrasound for wireless power transfer and data transmission. A central node transmits high-power ultrasonic waves towards the transducer of the sensor node. The sensor node performs power rectification, measures the temperature with a thermocouple, and transmits the encoded temperature back to the central node using on-off keying (OOK) modulated ultrasonic waves. This paper demonstrates the feasibility of using ultrasound as a medium for wireless power and data transmission.

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