Journal of Information Processing Systems

Korea Information Processing Society (한국정보처리학회)
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High Shock-Resistant Design of Piezoresistive High-g Accelerometer

  • Yongle Lu (School of Optoelectronic Engineering, Chongqing University of Post and Telecommunications) ;
  • Zhen Qu (School of Optoelectronic Engineering, Chongqing University of Post and Telecommunications) ;
  • Jie Yang (School of Optoelectronic Engineering, Chongqing University of Post and Telecommunications) ;
  • Wenxin Wang (School of Optoelectronic Engineering, Chongqing University of Post and Telecommunications) ;
  • Wenbo Wang (School of Optoelectronic Engineering, Chongqing University of Post and Telecommunications) ;
  • Yu Liu (School of Optoelectronic Engineering, Chongqing University of Post and Telecommunications)
  • Received : 2021.11.16
  • Accepted : 2022.07.08
  • Published : 2023.04.30
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Abstract

To improve the shock-resistance of piezoresistive high-g accelerometer, we propose a design of piezoresistive high-g accelerometer. The accelerometer employs special-shaped proof masses system with a cross gap. Four tiny sensing beams are bonded above the cross gap. The expression of the deformation, natural frequency and damping is deduced, and the structural parameters are optimized. The accelerometer structure is simulated and verified by finite element method (FEM) simulation. The results show that the range of the accelerometer can reach 200,000 g, the natural frequency is 453.6 kHz, and the cross-axis sensitivity of X-axis and Y-axis is 0.25% and 0.11%, respectively, which can apply to the measurement of high shock. Contrastively, the cross-axis sensitivity of X-axis and Y-axis is respectively, reduced by 93.2% and 96.9%. The sensitivity of our accelerometer is 0.88 μV/g. It is of great value for the application of piezoresistive high-g accelerometer with high shock-resistance.

Keywords

Acknowledgement

This paper is supported by Chongqing Natural Science Foundation of China (No. CSTC2021JCYJMSXMX0566).

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