Title page for etd-0809110-125517


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URN etd-0809110-125517
Author Wen-chi Huang
Author's Email Address dexter7515@gmail.com
Statistics This thesis had been viewed 5559 times. Download 857 times.
Department Electrical Engineering
Year 2009
Semester 2
Degree Master
Type of Document
Language English
Title A Readout Circuit for Piezoelectric Sensors with Digital Range-Enhancement
Date of Defense 2010-07-15
Page Count 93
Keyword
  • realignment
  • pressure recording
  • piezoelectric sensors
  • read-out
  • dynamic range
  • Abstract This thesis presents a fully integratable read-out front-end for recording from piezoelectric sensors. It is proposed to periodically reset the input signal to avoid build-up of large voltages across the circuit input terminals. Digitizing the signal after buffering allows removal of the reset steps in the digital domain, thus yielding a faithful representation of the applied input force variation. Different realignment algorithms are presented in this thesis, and the measured results as well as the simulated results from a bench setup are reported which confirm a 52.5 dB dynamic range and recording of frequencies as low as 0.55 Hz. It is also shown the effect of input current leakage is reduced. The proposed system is simulated using the Cadence Spectre simulator, Synopsys HSPICE and National Instruments LabVIEW to confirm its operation. Different realignment algorithms are examined using MATLAB. The read-out circuit is further realized by 0.35 μm 2-poly 4-metal Taiwan Semiconductor Manufacturing Company (TSMC) process technology. The chip measured results are reported and compared to the simulation. The measured implementation yields a pressure recording range of 0.4 N to 169 N, while consuming 230 μW from 3 V supplies.
    Advisory Committee
  • Ya-Hsin Hsueh - chair
  • Chua-Chin Wang - co-chair
  • Jih-Ching Chiu - co-chair
  • Robert Rieger - advisor
  • Files
  • etd-0809110-125517.pdf
  • indicate in-campus access immediately and off_campus access in a year
    Date of Submission 2010-08-09

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