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Sun Hailang, Tian Yukui, Jin Lei, Zhang Xuan, Xie Hua. Weak signal detection of MEMS hot-film wall shear stress sensors[J]. Journal of Experiments in Fluid Mechanics, 2017, 31(2): 39-43. DOI: 10.11729/syltlx20170016
Citation: Sun Hailang, Tian Yukui, Jin Lei, Zhang Xuan, Xie Hua. Weak signal detection of MEMS hot-film wall shear stress sensors[J]. Journal of Experiments in Fluid Mechanics, 2017, 31(2): 39-43. DOI: 10.11729/syltlx20170016
shu

Weak signal detection of MEMS hot-film wall shear stress sensors

  • 1.

    National Key Laboratory of Science and Technology on Hydrodynamics, China Ship Scientific Research Center (CSSRC), Wuxi Jiangsu 214082, China

  • 2.

    Hangzhou Onforever Power Technology Co. Ltd, Hangzhou 311112, China

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  • Received Date: December 14, 2016
  • Revised Date: February 23, 2017
    Graphical Abstract
    • Abstract
  • The weak signal of MEMS hot-film wall shear stress (WSS) sensors is hard to detect by direct amplification due to the inherent basic voltage. An effective method to solve this problem is proposed, which is to add an output-balancing system (OBS) before the signal is amplified. The basic voltage is decreased while the signal is retained. The development of the output-balancing system is presented, including the technical scheme, key technologies, examination and application.
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    • References (16)
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