Ultrasonic Coupled Passive Wireless Oscillating Sensor System

Proceedings

Thomas Schaechtle¹  Leonhard Reindl¹  Joachim Hoppe¹  Di Shi¹  Dominik Schott¹  Taimur Aftab¹ 

[1] Laboratory of Electrical Instrumentation, Institute of Microsystems Engineering, University of Freiburg, Freiburg im Breisgau, 79085, Germany;

关键词: ultrasound;    wireless sensor system;    passive sensor node;    temperature sensing oscillator;    tuning fork resonator;   

DOI  :  10.3390/proceedings1040574

来源: DOAJ

【 摘 要 】

This paper presents, for the first time, an instrumentation technique for passively extracting a resonance frequency of a high-Q resonator across a wireless ultrasonic channel. As a first application, passive wireless measurement of temperature is presented along with a proof of concept of the wireless and passive operation of the device. Temperature resolution of 0.17 °C and a measurement range of 350 mm has been demonstrated.

【 授权许可】

Unknown