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Design and system-level simulation of a capacitive dual axis accelerometer

  • Weiping Chen*
  • , Jinling Ding
  • , Xiaowei Liu
  • , Chao Wang
  • *Corresponding author for this work
  • Harbin Institute of Technology

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

A system-level model of a bulk micromachined dual axis accelerometer is presented. The accelerometer has only one inertial mass, symmetrically suspended by four pairs of folded elastic beams. The size of the fabricated accelerometer is 5.4×5.4 mm2. The displacement change of the inertial mass is converted to the change of differential capacitance between active combs and fixed combs. Generally, the input acceleration is mixed with the x-axis and the y-axis. In order to separate and pick off the mixed signal, the frequency-division method is adopted in the interface circuit. The paper details the Simulink model, which is used to evaluate the feasibility of the detective method. The simulation results validate the feasibility that the interface circuit can detect dual-axis acceleration separately and synchronously.

Original languageEnglish
Title of host publicationProceedings of the 2nd IEEE International Conference on Nano/Micro Engineered and Molecular Systems, IEEE NEMS 2007
Pages614-617
Number of pages4
DOIs
StatePublished - 2007
Event2007 2nd IEEE International Conference on Nano/Micro Engineered and Molecular Systems, IEEE NEMS 2007 - Bangkok, Thailand
Duration: 16 Jan 200719 Jan 2007

Publication series

NameProceedings of the 2nd IEEE International Conference on Nano/Micro Engineered and Molecular Systems, IEEE NEMS 2007

Conference

Conference2007 2nd IEEE International Conference on Nano/Micro Engineered and Molecular Systems, IEEE NEMS 2007
Country/TerritoryThailand
CityBangkok
Period16/01/0719/01/07

Keywords

  • Capacitance sensing
  • Micromachined accelerometer
  • System-level model

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